阅读说明：本技术 电动牙刷刷头更换提醒方法、装置以及电动牙刷 (Electric toothbrush head replacement reminding method and device and electric toothbrush ) 是由 黄浩哲 曾祥基 张子月 林芝泛 于 2021-07-27 设计创作，主要内容包括：本申请涉及一种电动牙刷刷头更换提醒方法、装置、存储介质以及电动牙刷,获取电动牙刷刷牙数据以及电动牙刷刷头周围环境数据,分析刷头累计使用次数、每次刷牙压力值以及每次刷牙时长,基于这些数据进一步得到电动牙刷刷头动态寿命衰减以及电动牙刷刷头静态寿命衰减,当其累计寿命衰减达到预设电动牙刷刷头寿命提醒阈值时,推送电动牙刷刷头更换提示消息,以提示用户进行电动牙刷刷头更换。整个过程中,分别从电动牙刷刷头正常使用寿命衰减以及静态(放置)环境正常寿命衰减两个维度来记录电动牙刷刷头已衰减寿命,可以实现准确的已使用寿命的统计,进而实现准确的电动牙刷刷头更换提醒。(The application relates to a method and a device for reminding replacement of a brush head of an electric toothbrush, a storage medium and the electric toothbrush are used for acquiring tooth brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush, analyzing accumulated use times of the brush head, a tooth brushing pressure value at each time and tooth brushing time at each time, further obtaining dynamic life attenuation of the brush head of the electric toothbrush and static life attenuation of the brush head of the electric toothbrush based on the data, and pushing a replacement prompt message of the brush head of the electric toothbrush when the accumulated life attenuation reaches a preset life reminding threshold value of the brush head of the electric toothbrush so as to prompt a user to replace the brush head of the electric toothbrush. In the whole process, the decayed service life of the electric toothbrush head is recorded from two dimensions of the decay of the normal service life of the electric toothbrush head and the decay of the normal service life of a static (placing) environment respectively, so that the accurate statistics of the decayed service life can be realized, and the accurate replacement reminding of the electric toothbrush head is realized.)

1. A method for reminding replacement of a brush head of an electric toothbrush, which is characterized by comprising the following steps:

acquiring brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush;

acquiring the accumulated use times of the brush head, the pressure value of each time of brushing and the time length of each time of brushing according to the brushing data of the electric toothbrush;

acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the brush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing;

acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head;

and when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, pushing a replacement prompt message of the electric toothbrush head.

2. The method of claim 1, wherein obtaining a dynamic life decay of a brushhead of an electric toothbrush based on a cumulative number of uses of the brushhead, a pressure per brushing pressure value, and a length of time per brushing comprises:

acquiring dynamic life attenuation of the electric toothbrush brush head in unit tooth brushing time according to the tooth brushing pressure value and the corresponding relation between the preset pressure interval and the life attenuation;

and obtaining the dynamic life attenuation of the electric toothbrush head according to the dynamic life attenuation of the electric toothbrush head in unit tooth brushing time and the tooth brushing time length of each time.

3. The method of claim 1, wherein obtaining a static head life decay of the power toothbrush from the environmental data about the power toothbrush head comprises:

acquiring the temperature and humidity value of the daily environment of the electric toothbrush head according to the ambient environment data of the electric toothbrush head;

acquiring daily static life attenuation of the electric toothbrush head according to the temperature and humidity value of the daily environment and a preset temperature and humidity-life attenuation corresponding relation;

and accumulating the daily static life attenuation of the electric toothbrush head to obtain the static life attenuation of the electric toothbrush head.

4. The method according to claim 3, wherein before obtaining the daily static lifetime decay of the electric toothbrush head according to the temperature and humidity value of the daily environment and the preset temperature and humidity-lifetime decay corresponding relationship, the method further comprises:

collecting the service life attenuation of the electric toothbrush head under different temperature and humidity conditions in an experimental state to obtain sampling data;

according to the sampling data, possible combination modes of the daily humiture are exhausted;

enumerating and calculating the confidence of each combination mode;

pruning each combination mode according to the confidence coefficient to remove redundant data and obtain pruned data;

and constructing a preset temperature and humidity-life attenuation corresponding relation according to the pruned data.

5. The method of claim 1, further comprising:

positioning a current position;

acquiring time consumed for purchasing the logistics of the electric toothbrush brush head according to the current position;

acquiring the dynamic life attenuation of the electric toothbrush head and the static life attenuation accumulated value of the electric toothbrush head, and calculating the average daily life attenuation of the electric toothbrush head;

determining the residual life redundancy corresponding to the purchase prompt according to the time consumption required for purchasing the logistics of the electric toothbrush brush head and the average daily life decay of the electric toothbrush brush head;

and pushing a purchase prompt when the detected residual service life of the electric toothbrush head reaches the residual service life redundancy.

6. The method of claim 1, wherein after pushing the purchase prompt, further comprising:

pushing an address information confirmation message, wherein the address information confirmation message is used for requesting a user to determine whether a purchase address is an address corresponding to the current position;

when the address confirmed message is received, a new electric toothbrush brushhead is automatically ordered for purchase.

7. The method of claim 1, further comprising:

acquiring a tooth image of a user;

according to the tooth image of the user, locating the dental plaque position on the tooth surface of the user;

when the electric toothbrush brush head moves to the dental plaque position, the vibration frequency of the electric toothbrush is increased.

8. An electric toothbrush brushhead replacement reminder device, the device comprising:

the data acquisition module is used for acquiring brushing data of the electric toothbrush and environmental data around the electric toothbrush head;

the data analysis module is used for acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

the dynamic prediction module is used for acquiring the dynamic life attenuation of the electric toothbrush brush head according to the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth;

the static state prediction module is used for acquiring static life attenuation of the electric toothbrush head according to the ambient environment data of the electric toothbrush head;

and the reminding module is used for pushing a change reminding message of the electric toothbrush head when the dynamic life attenuation of the electric toothbrush head and the static life attenuation accumulated value of the electric toothbrush head reach a preset life reminding threshold value of the electric toothbrush head.

9. An electric toothbrush comprising an electric toothbrush body and a processor embedded therein, the processor storing a computer program, characterized in that the steps of the method of any one of claims 1 to 7 are implemented by the processor when executing the computer program.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.

Technical Field

The application relates to the technical field of intelligent household appliances, in particular to a method and a device for reminding replacement of a brush head of an electric toothbrush, a storage medium and the electric toothbrush.

Background

The traditional electric toothbrush head mainly adopts DuPont bristles, and is characterized in that part of the bristles are dyed into blue by special pigment, and when a user wears the bristles in the using process, the blue part is gradually worn and becomes white. When the blue bristle part is completely whitened, the user is prompted to change the brush head.

The reminding scheme has the major disadvantage that the using condition, the tooth brushing method and the environment storage condition of each user are different, so that for a certain user A, the force for the user A to prop against the teeth by the electric toothbrush is small, the environment for storing the electric toothbrush is dry, and as a result, the bristles are changed from blue to white from blue basically in about half a year. For some users B who have large force, more teeth brushing times every day and large storage environment humidity, the user B may fade about one month, but in fact, the brushing state is good, and the user B will cause great waste if replaced.

Therefore, it can be seen that the traditional electric toothbrush brush head replacement reminding scheme cannot realize accurate reminding.

Disclosure of Invention

Therefore, it is necessary to provide a method and a device for reminding replacement of a brush head of an electric toothbrush, a storage medium and an electric toothbrush, which can realize accurate reminding, for solving the technical problem that the conventional scheme for reminding replacement of a brush head of an electric toothbrush cannot realize accurate reminding.

A method for reminding replacement of a brush head of an electric toothbrush comprises the following steps:

acquiring brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush;

acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing;

acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head;

when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed.

In one embodiment, obtaining the dynamic life decay of the electric toothbrush head according to the accumulated use times of the electric toothbrush head, the pressure value of each time of brushing and the time length of each time of brushing comprises:

acquiring dynamic life attenuation of the electric toothbrush brush head in unit tooth brushing time according to the tooth brushing pressure value and the corresponding relation between the preset pressure interval and the life attenuation;

and obtaining the dynamic life attenuation of the electric toothbrush head according to the dynamic life attenuation of the electric toothbrush head in unit tooth brushing time and the tooth brushing time length of each time.

In one embodiment, obtaining the static life decay of the brushhead of the power toothbrush from the environmental data surrounding the brushhead of the power toothbrush comprises:

acquiring the temperature and humidity value of the daily environment of the electric toothbrush head according to the ambient environment data of the electric toothbrush head;

acquiring daily static life attenuation of the electric toothbrush head according to the temperature and humidity value of the daily environment and a preset temperature and humidity-life attenuation corresponding relation;

and accumulating the daily static life attenuation of the electric toothbrush head to obtain the static life attenuation of the electric toothbrush head.

In one embodiment, before obtaining the daily static life decay of the electric toothbrush head according to the temperature and humidity value of the daily environment and the preset temperature and humidity-life decay corresponding relationship, the method further includes:

collecting the service life attenuation of the electric toothbrush head under different temperature and humidity conditions in an experimental state to obtain sampling data;

according to the sampling data, possible combination modes of the daily humiture are exhausted;

enumerating and calculating the confidence of each combination mode;

pruning each combination mode according to the confidence coefficient to remove redundant data and obtain pruned data;

and constructing a preset temperature and humidity-life attenuation corresponding relation according to the data after pruning.

In one embodiment, the method for reminding replacement of a brush head of an electric toothbrush further comprises:

positioning a current position;

acquiring time consumption required for purchasing logistics of the electric toothbrush brush head according to the current position;

acquiring an integrated value of dynamic life attenuation of the electric toothbrush head and static life attenuation of the electric toothbrush head, and calculating average daily life attenuation of the electric toothbrush head;

determining the residual life redundancy corresponding to the purchase prompt according to the time consumption required for purchasing the logistics of the electric toothbrush brush head and the average daily life decay of the electric toothbrush brush head;

when the detected residual service life of the electric toothbrush head reaches the residual service life redundancy amount, pushing a purchase prompt.

In one embodiment, after pushing the purchase prompt, the method further includes:

pushing an address information confirmation message, wherein the address information confirmation message is used for requesting a user to determine whether a purchase address is an address corresponding to the current position;

when the address confirmed message is received, a new electric toothbrush brushhead is automatically ordered for purchase.

In one embodiment, the method for reminding replacement of a brush head of an electric toothbrush further comprises:

acquiring a tooth image of a user;

according to the tooth image of the user, positioning the dental plaque position on the tooth surface of the user;

when the brush head of the electric toothbrush moves to the dental plaque position, the vibration frequency of the electric toothbrush is increased.

An electric toothbrush brushhead replacement reminder device, the device comprising:

the data acquisition module is used for acquiring brushing data of the electric toothbrush and environmental data around the electric toothbrush head;

the data analysis module is used for acquiring the accumulated use times of the brush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing according to the tooth brushing data of the electric toothbrush;

the dynamic prediction module is used for acquiring the dynamic life attenuation of the electric toothbrush brush head according to the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth;

the static state prediction module is used for acquiring static life attenuation of the electric toothbrush head according to the ambient environment data of the electric toothbrush head;

and the reminding module is used for pushing the electric toothbrush brush head replacement reminding message when the integrated value of the dynamic life attenuation of the electric toothbrush brush head and the static life attenuation of the electric toothbrush brush head reaches a preset electric toothbrush brush head life reminding threshold value.

An electric toothbrush comprises an electric toothbrush body and a processor arranged in the electric toothbrush body, wherein the processor stores a computer program, and the processor executes the computer program to realize the following steps:

acquiring brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush;

acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing;

acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head;

when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed.

A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:

acquiring brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush;

acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing;

acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head;

when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed.

According to the method and the device for reminding the replacement of the brush head of the electric toothbrush, the brushing data of the electric toothbrush and the ambient data around the brush head of the electric toothbrush are obtained, the accumulated using times of the brush head, the value of the pressure of brushing teeth at each time and the time length of brushing teeth at each time are analyzed, the dynamic life attenuation of the brush head of the electric toothbrush and the static life attenuation of the brush head of the electric toothbrush are further obtained based on the data, and when the accumulated life attenuation reaches the preset life reminding threshold value of the brush head of the electric toothbrush, a message for reminding the replacement of the brush head of the electric toothbrush is pushed so as to remind a user of the replacement of the brush head of the electric toothbrush. In the whole process, the decayed service life of the electric toothbrush head is recorded from two dimensions of the decay of the normal service life of the electric toothbrush head and the decay of the normal service life of a static (placing) environment respectively, so that the accurate statistics of the decayed service life can be realized, and the accurate replacement reminding of the electric toothbrush head is realized.

Drawings

FIG. 1 is an environmental diagram illustrating an exemplary method of reminding replacement of a brush head of an electric toothbrush;

FIG. 2 is a schematic flow chart illustrating a method for prompting replacement of a brush head of an electric toothbrush according to an exemplary embodiment;

FIG. 3 is a schematic flow chart of a method for reminding replacement of a brush head of an electric toothbrush according to another embodiment;

FIG. 4 is a flow diagram illustrating a purchase prompt in an example application;

FIG. 5 is a schematic view of a power toothbrush;

FIG. 6 is a block diagram of a device for reminding replacement of a brush head of an electric toothbrush according to an embodiment;

FIG. 7 is a diagram illustrating an internal structure of a computer device according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The method for reminding the replacement of the brush head of the electric toothbrush can be applied to the application environment shown in figure 1. Wherein, electric toothbrush 102 is connected with terminal 104, and it specifically can adopt the bluetooth mode to connect, and terminal 104 obtains electric toothbrush 102 relevant data in the use to carry out electric toothbrush brush head and change the warning. Specifically, the terminal 104 acquires brushing data of the electric toothbrush and environmental data around the electric toothbrush head; acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush; acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing; acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head; when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed to a user. The terminal 102 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.

It can be understood that the method for reminding the replacement of the brush head of the electric toothbrush can also be directly applied to the electric toothbrush, and a processor is arranged in the electric toothbrush and executes the method for reminding the replacement of the brush head of the electric toothbrush.

In one embodiment, as shown in fig. 2, a method for reminding replacement of a brush head of an electric toothbrush is provided, which is described by taking the electric toothbrush in fig. 1 as an example, and comprises the following steps:

s100: acquiring brushing data of the electric toothbrush and environmental data around the electric toothbrush head.

The electric toothbrush consists of a brush head and a brush handle, wherein a motor, a processor, a peripheral circuit and other devices are arranged in the brush handle, and the motor drives the brush head to move (vibrate). The electric toothbrush can generate a large amount of data in the using process, the data can be understood as running log data of the electric toothbrush, the running log data can be cached in a cache space of an internal device of the electric toothbrush, and the running log data can be directly obtained from the cache space when needed, so that the tooth brushing data of the electric toothbrush and the ambient data around the brush head of the electric toothbrush can be obtained; in addition, the brushing data of the electric toothbrush and the data of the environment around the brush head of the electric toothbrush can be acquired in real time, and the brushing data of the electric toothbrush in the working state and the data of the environment around the brush head in the non-working state can be acquired in a sensor mode.

The electric toothbrush tooth brushing data mainly comprises the accumulated use times of the brush head, the tooth brushing pressure and the tooth brushing time. The environmental data specifically refers to the temperature and humidity (referred to as temperature and humidity for short) of the environment where the electric toothbrush head is located. The life attenuation of the electric toothbrush head is different under different temperature and humidity environments, so that the data needs to be acquired, and the data can be detected by a temperature and humidity sensor arranged in the electric toothbrush.

S200: and acquiring the accumulated use times of the brush head, the pressure value of each time of brushing and the time length of each time of brushing according to the brushing data of the electric toothbrush.

The accumulated use times of the brush head refers to the accumulated use times of the brush head when the electric toothbrush is replaced with a new brush head; the pressure value of brushing teeth at each time refers to the pressure value of the brush head in the process of brushing teeth at each time, the life attenuation coefficient of the brush head is different due to different pressure intervals, and it can be understood that the larger the pressure value is, the larger the friction force between the brush head and the teeth is, and therefore, the larger the life attenuation coefficient of the corresponding brush head is.

S300: and acquiring the dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing.

The service life attenuation of the brush head in the using process (in the tooth brushing process) can be evaluated by accumulating the using times of the brush head, the pressure value of tooth brushing each time and the tooth brushing time each time, namely the dynamic service life attenuation of the brush head of the electric toothbrush is obtained. Specifically, the life attenuation coefficients (unit time) of the brush head corresponding to different brushing pressure intervals can be tested in an experimental mode, when the dynamic life attenuation of the brush head of the electric toothbrush needs to be evaluated, the pressure interval corresponding to the brushing pressure value is inquired, and then the life attenuation coefficient a of the brush head of the current brushing is obtained based on the life attenuation coefficients of the brush head corresponding to the different brushing pressure intervals; and multiplying the a by the time t of brushing teeth each time to obtain the dynamic life attenuation of the electric toothbrush head corresponding to the current time of brushing teeth, and accumulating the dynamic life attenuation of the electric toothbrush head corresponding to the times of brushing teeth each time to obtain the dynamic life attenuation of the brush head from the beginning to the present.

S400: and acquiring the static life attenuation of the electric toothbrush head according to the ambient data of the electric toothbrush head.

As mentioned above, powered toothbrush heads also lose life when placed in an environment and lose life at different rates under different environments. Specifically, the static life attenuation of the electric toothbrush head under different environmental conditions can be tested in an experimental state, and a corresponding relation between an environmental parameter and the static life attenuation is established; when the static life attenuation needs to be evaluated, the static life attenuation of the electric toothbrush head can be obtained based on the real acquired environmental data around the electric toothbrush head and the pre-established corresponding relation between the environmental parameters and the static life attenuation. Still further, the environmental parameters primarily take into account both the temperature and humidity dimensions.

S500: when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed.

The preset electric toothbrush head life reminding threshold is a preset reminding threshold which can be set according to the actual application scene, generally speaking, the preset electric toothbrush head life reminding threshold can be set to be 95% attenuated (namely only 5% of the life is remained), namely, if the accumulated static life attenuation and the dynamic life attenuation of the electric toothbrush head reach 95%, the electric toothbrush head replacement prompt message is pushed. Specifically, the pushing mode can be a voice prompt for the user, such as "the brush head is short of life, please replace in time"; or by means of an indicator light, such as a yellow/orange indicator light; or by a vibration mode with a certain frequency; or the electric toothbrush brush head replacement prompt message is directly pushed to an APP (Application program), and then the APP displays the message to the user.

According to the method for reminding the replacement of the brush head of the electric toothbrush, the brushing data of the electric toothbrush and the data of the environment around the brush head of the electric toothbrush are obtained, the accumulated use times of the brush head, the value of the pressure of brushing teeth at each time and the brushing time at each time are analyzed, the dynamic life attenuation of the brush head of the electric toothbrush and the static life attenuation of the brush head of the electric toothbrush are further obtained based on the data, and when the accumulated life attenuation reaches the preset life reminding threshold of the brush head of the electric toothbrush, a message for reminding the user of the replacement of the brush head of the electric toothbrush is pushed. In the whole process, the decayed service life of the electric toothbrush head is recorded from two dimensions of the decay of the normal service life of the electric toothbrush head and the decay of the normal service life of a static (placing) environment respectively, so that the accurate statistics of the decayed service life can be realized, and the accurate replacement reminding of the electric toothbrush head is realized.

As shown in fig. 3, in one embodiment, S300 includes:

s320: and acquiring the dynamic life attenuation of the electric toothbrush brush head in unit tooth brushing time according to the tooth brushing pressure value and the corresponding relation between the preset pressure interval and the life attenuation.

S340: and obtaining the dynamic life attenuation of the electric toothbrush head according to the dynamic life attenuation of the electric toothbrush head in unit tooth brushing time and the tooth brushing time length of each time.

The preset pressure interval-life decay corresponding relation is a pre-constructed corresponding relation, and the dynamic life decay of the corresponding unit tooth brushing time under the action of different pressures can be collected in an experimental state, for example, the pressure value can be set within the range of P1-P2; the tooth brushing is continued for 2 minutes, and the dynamic life attenuation of the electric toothbrush brush head within the unit tooth brushing time within the range of pressure P1-P2 is M/2 if the dynamic life attenuation of the brush head is detected to be M; repeating the test process to obtain the dynamic life attenuation of the electric toothbrush brush head in unit tooth brushing time with the pressure from P1-PN and corresponding different pressure intervals, and constructing the corresponding relation between the preset pressure interval and the life attenuation. The data can be imported (downloaded/cached) into a cache space of the electric toothbrush after being constructed in advance, and the corresponding relation data can be directly called when needed. Furthermore, the pressure value of each time of tooth brushing can be an average value, namely the average value of the pressure in the tooth brushing process of this time, the pressure interval in which the average value is positioned is determined, and the dynamic life decay of the electric toothbrush brush head in unit tooth brushing time corresponding to the tooth brushing of this time is determined according to the preset pressure interval-life decay corresponding relation. And obtaining the dynamic life attenuation of the electric toothbrush head in unit tooth brushing time, multiplying the dynamic life attenuation by the tooth brushing time to obtain the dynamic life attenuation of the electric toothbrush head corresponding to the tooth brushing, and performing the treatment process aiming at each tooth brushing in the record to obtain the dynamic life attenuation of the electric toothbrush head after accumulation.

As shown in fig. 3, in one embodiment, S400 includes:

s420: and acquiring the temperature and humidity value of the daily environment of the electric toothbrush head according to the ambient environment data of the electric toothbrush head.

S440: and acquiring daily static life attenuation of the electric toothbrush head according to the temperature and humidity value of the daily environment and a preset temperature and humidity-life attenuation corresponding relation.

S460: and accumulating the daily static life attenuation of the electric toothbrush head to obtain the static life attenuation of the electric toothbrush head.

When the electric toothbrush is in a non-working state, the temperature and humidity sensor arranged in the electric toothbrush works once every a period of time, the ambient data of the electric toothbrush head is collected to obtain the ambient data of the electric toothbrush head, and the data is analyzed to obtain the temperature and humidity value of the daily environment of the electric toothbrush head. The preset temperature and humidity-life attenuation corresponding relation is a pre-constructed corresponding relation, and specifically can be used for testing the influence of different temperature and humidity environments on the service life of the brush head in a simulation experiment environment, namely collecting brush head life attenuation data corresponding to different temperature and humidity values in an experiment state, constructing the preset temperature and humidity-life attenuation corresponding relation based on the data, and storing the constructed corresponding relation into a storage space of the electric toothbrush and calling the corresponding relation when needed. In real-time application, after temperature and humidity of the day are measured, averaging the data to obtain temperature and humidity data of the day, assuming that the service life of the bristles is attenuated by N for 1 day at the temperature of a certain degree centigrade and the humidity of the day, and accumulating the numerical values to obtain the static service life attenuation of the brush head of the electric toothbrush.

In one embodiment, before obtaining the daily static life decay of the electric toothbrush head according to the temperature and humidity value of the daily environment and the preset temperature and humidity-life decay corresponding relationship, the method further includes:

collecting the service life attenuation of the electric toothbrush head under different temperature and humidity conditions in an experimental state to obtain sampling data; according to the sampling data, possible combination modes of the daily humiture are exhausted; enumerating and calculating the confidence of each combination mode; pruning each combination mode according to the confidence coefficient to remove redundant data and obtain pruned data; and constructing a preset temperature and humidity-life attenuation corresponding relation according to the data after pruning.

In this embodiment, for the collected life attenuation of the electric toothbrush head under different temperature and humidity conditions, redundant data is removed by exhaustion, enumeration and confidence-based pruning, and a preset temperature and humidity-life attenuation corresponding relationship is accurately constructed.

To illustrate the above process in detail, a specific experimental example will be used below to illustrate the above, in which temperature data is used instead of temperature and humidity values for simplicity of illustration. For example, how to find the relationship between the life time of 25 ℃ and the life time of 35 ℃ sometimes decreases by 1%, 2%, 3%, 4%, 5? Most used is association rule learning, so that the frequently-decayed life span at 25 degrees and the frequently-decayed decay rate at 35 degrees are found, which is called a frequent item set. For example, the following data were obtained after several experiments: for the first time: 25 degrees 1 per mill, 28 degrees 1.2 per mill, 30 degrees 1.5 per mill; and (3) for the second time: 28 degrees 1.5 per mill, 30 degrees 1.8 per mill, 35 degrees 3 percent; and thirdly: 30 degrees 1.5 per mill, 32 degrees 1.8 per mill, 35 degrees 2 per mill; fourth time: 32 degrees 2.2 per mill, 35 degrees 4 per mill; fifth step: 25 degrees 1.2 per mill, 30 degrees 1.8 per mill; … …, respectively; listing all possibilities, generating all possible combination modes through different permutation and combination by the most original method, enumerating and calculating the confidence degrees of all the combination modes, redundant data of all the permutation and combination, pruning by an Apriori principle, removing redundant data, simplifying the machine calculation process, and constructing to obtain the preset temperature and humidity-life attenuation corresponding relation.

In one embodiment, the method for reminding replacement of a brush head of an electric toothbrush further comprises:

positioning a current position; acquiring time consumption required for purchasing logistics of the electric toothbrush brush head according to the current position; acquiring an integrated value of dynamic life attenuation of the electric toothbrush head and static life attenuation of the electric toothbrush head, and calculating average daily life attenuation of the electric toothbrush head; determining the residual life redundancy corresponding to the purchase prompt according to the time consumption required for purchasing the logistics of the electric toothbrush brush head and the average daily life decay of the electric toothbrush brush head; when the detected residual service life of the electric toothbrush head reaches the residual service life redundancy amount, pushing a purchase prompt.

In this embodiment, a purchase prompting mechanism is further introduced, and when the remaining life of the electric toothbrush head is detected to be insufficient, a purchase prompt is sent to prompt the user to purchase a new brush head. Specifically, the electric toothbrush is self-positioned, the current geographical position is determined, namely the position information of a D street E cell in a C cell in B city, A province is determined, and the time consumption for purchasing the electric toothbrush brushhead logistics is obtained by big data analysis according to the determined position, wherein the big data analysis process can be the time consumption for a user to purchase the brushhead logistics historically, for example, 3 days; or the time consumed for analyzing the logistics purchased by the neighbors of the same cell is 3 days; the method comprises the steps of recording average daily life attenuation in a history record based on historical recorded dynamic life attenuation of an electric toothbrush brush head and an accumulated value of the average daily life attenuation of the electric toothbrush brush head, calculating the product of time consumption required for purchasing material flow of the electric toothbrush brush head and the average daily life attenuation of the electric toothbrush brush head, namely obtaining the dynamic life attenuation when the electric toothbrush brush head is purchased and delivered to a hand of a user, determining and constructing residual life redundancy corresponding to a prompt on the basis of the dynamic life attenuation, specifically, increasing a constant such as increasing 3% on the basis of the dynamic life attenuation or directly using the dynamic life attenuation as the residual life redundancy, and prompting the user to purchase a new brush head when detecting that the residual life of the electric toothbrush brush head reaches the residual life redundancy.

In one embodiment, after pushing the purchase prompt, the method further includes:

pushing an address information confirmation message, wherein the address information confirmation message is used for requesting a user to determine whether a purchase address is an address corresponding to the current position; when the address confirmed message is received, a new electric toothbrush brushhead is automatically ordered for purchase.

In this embodiment, after the purchase prompt is pushed, an address information confirmation message is further pushed to request the user to further determine whether the purchase address is an address corresponding to the current location, and optionally, after receiving a message that the user feeds back permission to purchase, the address information confirmation message is further pushed; when the address fed back by the user is received and the message is confirmed, the operation of ordering and purchasing a new electric toothbrush brush head is automatically started, so that automatic purchase is realized, and convenience is brought to the user.

In practice, because the time consumed for logistics is typically several days, which is a relatively short time, the static head life decay is a very small amount during this process and can generally be ignored, and therefore, only the decay in life that results from using the electric toothbrush during the several days of logistics need be considered. As shown in fig. 4, in practical applications, the automatic purchase function may be executed by a mobile phone paired/connected/associated with the electric toothbrush, and the specific process is as follows: the user can select whether to start the automatic purchasing function according to the requirement of the user. When the function is started, the mobile phone APP needs to be allowed to obtain and position. And after the user is positioned, matching the nearest delivery warehouse, calculating the delivery timeliness from the delivery warehouse to the user, if the delivery timeliness is Y days, the user respectively brushes teeth for Z minutes in the morning and evening each day, when the brush head residual life is detected to be less than 2Y Z minutes, vibrating the user for reminding, and sending information to the mobile phone end through the Bluetooth or the radio frequency module. After receiving the relevant model information, the mobile phone APP sends a relevant instruction to indirectly connect with the server, matches the type of the brush head of the mall, and sends a purchase prompt to a user. And after the permission of the user is obtained, obtaining the current positioning information of the user, and judging whether the current positioning information of the user is consistent with the previous delivery information. If the order is matched with the commodity, the ordering operation is automatically carried out, and the commodity is paid after the commodity is delivered or the payment is carried out on the internet. If the positioning information is not matched with the previous delivery information, the user is inquired whether the current positioning information is used as the delivery address, and the related one-key purchasing operation can be completed after selection.

In one embodiment, the method for reminding replacement of a brush head of an electric toothbrush further comprises:

acquiring a tooth image of a user; according to the tooth image of the user, positioning the dental plaque position on the tooth surface of the user; when the brush head of the electric toothbrush moves to the dental plaque position, the vibration frequency of the electric toothbrush is increased.

The dental plaque position on the surface of the teeth of the user can be positioned by adopting an image identification and positioning technology according to the dental image of the user and by acquiring the dental image of the user through an image acquisition device arranged on the electric toothbrush, particularly, the function of observing dental plaque can be realized by observing metabolite porphyrin of dental plaque, because the fluorescent material can emit orange and red fluorescent light under the irradiation of purple light in a specific wave band, only the teeth are irradiated by utilizing the purple light lamp, dental plaque on the surfaces of the teeth of a user is identified by utilizing the polymer optical filter and the camera, further, RGB histogram data is read aiming at the obtained image, the dental plaque area is judged, then marking is carried out to locate a specific dental plaque position, when the electric toothbrush head moves to the dental plaque position, the vibration frequency of the electric toothbrush is improved, so as to effectively clear dental plaque on teeth, clean the teeth of a user and bring good user experience. In addition, a relevant dental plaque model can be established in a built-in processor of the electric toothbrush, a gyroscope is added in the electric toothbrush for positioning the toothbrush, and when the toothbrush is positioned at a position with more dental plaque, the vibration frequency can be enhanced, so that a good tooth brushing effect is met.

It should be understood that, although the steps in the flowcharts are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in each of the flowcharts described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.

In practical application, the method for reminding replacement of the brush head of the electric toothbrush can be applied to the electric toothbrush shown in fig. 5, and the electric toothbrush comprises an electric toothbrush handle, a brush head, a pressure sensor, a temperature and humidity sensor, a counter and the like. The miniature pressure sensor mainly comprises a strain gauge, the strain gauge is an element for measuring strain, which is composed of a sensitive grid and the like, after a component is stressed, because a measuring point is strained, the sensitive grid is deformed along with the strain gauge, so that the resistance of the sensitive grid is changed, and the strain gauge can be converted into a strain value of the measuring point only by measuring the resistance change. The function of observing dental plaque can be realized through the metabolite porphyrin who observes dental plaque, because it can send orange and red fluorescence under specific wave band purple light shines, so only need utilize the purple light to shine the tooth, utilizes polymer filter and camera, just can pass to the cell-phone with the real-time image of dental plaque on, the user can see the dental plaque on tooth surface on cell-phone APP.

The specific working process of the electric toothbrush comprises the following steps:

when a new brushhead is loaded, check its NFC (Near Field Communication) tag information for correspondence with the last time? If the identity information is the same, no change is made. If the identity information is different, the brush head is judged to be renewed, the counter in the brush handle is reset, the relevant information such as the model of the brush head, the theoretical life of the brush hair and the like in the NFC label of the new brush head is read, and the relevant information is written into the brush handle memory. When the toothbrush is started to brush teeth each time, the counter counts and adds 1, the pressure sensor works, the recently measured value is averaged, then the average value is compared with the threshold value set in the memory, the tooth brushing pressure interval of the user is judged to be in which interval, and the life data of the corresponding pressure interval is called. Assuming that the brushhead is operating for Z minutes each time it is turned on, then each time the counter is incremented by 1, the lifetime consumes Z minutes, leaving lifetimes A-Z minutes. If the tooth brushing time of the user is inconsistent, the tooth brushing time of each time can be recorded, correlation coefficient calculation is carried out on the tooth brushing time and the habit of the user after a period of time, the correlation is analyzed, the tooth brushing time in the future is predicted, and the residual life is calculated. When the toothbrush is in a non-working state, the temperature and humidity sensor works once every a period of time to measure the temperature and humidity of the current environment. And after the temperature and humidity of the day are measured, averaging the data to obtain the temperature and humidity data of the day. For different bristle types, data are preset in the NFC tag when leaving a factory, and assuming that the life decay rate X% of the bristles for 1 day at the temperature of some degrees celsius and some humidity, life prediction is accomplished by analogy with the above life data affected by the tooth brushing pressure. The toothbrush can remind the user to carry out dental plaque detection through vibration or a mobile phone APP message pushing mode at intervals. In a high-end machine type, a calculating chip can be added, the count value before the counter is cleared at each time is read, then the correlation degree calculation is carried out on the count value, the pressure value and the temperature and the humidity respectively, the correlation degree of the pressure, the service life and the correlation degree of the temperature, the humidity and the service life are calculated, and the positive and negative feedback regulation is carried out on the data arranged in the brush head to form a closed loop. The dynamically adjusted life data based on each user's brushing data will be more accurate, allowing subsequent automatic brush head purchases to be made more timely.

As shown in fig. 6, the present application further provides a reminder device for replacement of a brush head of an electric toothbrush, the device comprising:

the data acquisition module 100 is used for acquiring brushing data of the electric toothbrush and environmental data around the electric toothbrush head;

the data analysis module 200 is used for acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

the dynamic prediction module 300 is used for acquiring the dynamic life attenuation of the electric toothbrush brush head according to the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth;

a static prediction module 400 for obtaining static life decay of the electric toothbrush brushhead based on environmental data surrounding the electric toothbrush brushhead;

and the reminding module 500 is used for pushing a change reminding message of the electric toothbrush head when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head.

Above-mentioned reminding device is changed to electric toothbrush brush head, acquire electric toothbrush data of brushing teeth and electric toothbrush brush head surrounding environment data, the accumulative use number of times of analysis brush head, the pressure value of brushing teeth at every turn and length of time of brushing teeth at every turn, further obtain electric toothbrush brush head dynamic life decay and electric toothbrush brush head static life decay based on these data, when its accumulative life decay reaches the first life-span of preset electric toothbrush and reminds the threshold value, the first change of propelling movement electric toothbrush brush head prompt message to the suggestion user carries out electric toothbrush brush head and changes. In the whole process, the decayed service life of the electric toothbrush head is recorded from two dimensions of the decay of the normal service life of the electric toothbrush head and the decay of the normal service life of a static (placing) environment respectively, so that the accurate statistics of the decayed service life can be realized, and the accurate replacement reminding of the electric toothbrush head is realized.

For specific examples of the device for reminding replacement of the toothbrush head of the electric toothbrush, reference may be made to the above examples of the method for reminding replacement of the toothbrush head of the electric toothbrush, and further description thereof is omitted here. All modules in the electric toothbrush head replacement reminding device can be wholly or partially realized through software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing data of preset corresponding relations. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of reminding replacement of a brush head of an electric toothbrush.

Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, the present application further provides an electric toothbrush comprising an electric toothbrush body and a processor embedded in the electric toothbrush body, the processor storing a computer program, the processor implementing the following steps when executing the computer program:

acquiring brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush;

acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing;

acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head;

when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed.

In one embodiment, the processor, when executing the computer program, further performs the steps of:

acquiring dynamic life attenuation of the electric toothbrush brush head in unit tooth brushing time according to the tooth brushing pressure value and the corresponding relation between the preset pressure interval and the life attenuation; and obtaining the dynamic life attenuation of the electric toothbrush head according to the dynamic life attenuation of the electric toothbrush head in unit tooth brushing time and the tooth brushing time length of each time.

In one embodiment, the processor, when executing the computer program, further performs the steps of:

acquiring the temperature and humidity value of the daily environment of the electric toothbrush head according to the ambient environment data of the electric toothbrush head; acquiring daily static life attenuation of the electric toothbrush head according to the temperature and humidity value of the daily environment and a preset temperature and humidity-life attenuation corresponding relation; and accumulating the daily static life attenuation of the electric toothbrush head to obtain the static life attenuation of the electric toothbrush head.

In one embodiment, the processor, when executing the computer program, further performs the steps of:

collecting the service life attenuation of the electric toothbrush head under different temperature and humidity conditions in an experimental state to obtain sampling data; according to the sampling data, possible combination modes of the daily humiture are exhausted; enumerating and calculating the confidence of each combination mode; pruning each combination mode according to the confidence coefficient to remove redundant data and obtain pruned data; and constructing a preset temperature and humidity-life attenuation corresponding relation according to the data after pruning.

In one embodiment, the processor, when executing the computer program, further performs the steps of:

positioning a current position; acquiring time consumption required for purchasing logistics of the electric toothbrush brush head according to the current position; acquiring an integrated value of dynamic life attenuation of the electric toothbrush head and static life attenuation of the electric toothbrush head, and calculating average daily life attenuation of the electric toothbrush head; determining the residual life redundancy corresponding to the purchase prompt according to the time consumption required for purchasing the logistics of the electric toothbrush brush head and the average daily life decay of the electric toothbrush brush head; when the detected residual service life of the electric toothbrush head reaches the residual service life redundancy amount, pushing a purchase prompt.

In one embodiment, the processor, when executing the computer program, further performs the steps of:

pushing an address information confirmation message, wherein the address information confirmation message is used for requesting a user to determine whether a purchase address is an address corresponding to the current position; when the address confirmed message is received, a new electric toothbrush brushhead is automatically ordered for purchase.

In one embodiment, the method for reminding replacement of a brush head of an electric toothbrush further comprises:

acquiring a tooth image of a user; according to the tooth image of the user, positioning the dental plaque position on the tooth surface of the user; when the brush head of the electric toothbrush moves to the dental plaque position, the vibration frequency of the electric toothbrush is increased.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:

acquiring brushing data of the electric toothbrush and environmental data around the brush head of the electric toothbrush;

acquiring the accumulated use times of the brush head, the pressure value of each time of brushing teeth and the time length of each time of brushing teeth according to the brushing data of the electric toothbrush;

acquiring dynamic life attenuation of the electric toothbrush head according to the accumulated use times of the toothbrush head, the pressure value of each time of tooth brushing and the time length of each time of tooth brushing;

acquiring static life attenuation of the electric toothbrush head according to the ambient environmental data of the electric toothbrush head;

when the integrated value of the dynamic life attenuation of the electric toothbrush head and the static life attenuation of the electric toothbrush head reaches a preset life reminding threshold value of the electric toothbrush head, a replacement prompt message of the electric toothbrush head is pushed.

In one embodiment, the computer program when executed by the processor further performs the steps of:

acquiring dynamic life attenuation of the electric toothbrush brush head in unit tooth brushing time according to the tooth brushing pressure value and the corresponding relation between the preset pressure interval and the life attenuation; and obtaining the dynamic life attenuation of the electric toothbrush head according to the dynamic life attenuation of the electric toothbrush head in unit tooth brushing time and the tooth brushing time length of each time.

In one embodiment, the computer program when executed by the processor further performs the steps of:

acquiring the temperature and humidity value of the daily environment of the electric toothbrush head according to the ambient environment data of the electric toothbrush head; acquiring daily static life attenuation of the electric toothbrush head according to the temperature and humidity value of the daily environment and a preset temperature and humidity-life attenuation corresponding relation; and accumulating the daily static life attenuation of the electric toothbrush head to obtain the static life attenuation of the electric toothbrush head.

In one embodiment, the computer program when executed by the processor further performs the steps of:

collecting the service life attenuation of the electric toothbrush head under different temperature and humidity conditions in an experimental state to obtain sampling data; according to the sampling data, possible combination modes of the daily humiture are exhausted; enumerating and calculating the confidence of each combination mode; pruning each combination mode according to the confidence coefficient to remove redundant data and obtain pruned data; and constructing a preset temperature and humidity-life attenuation corresponding relation according to the data after pruning.

In one embodiment, the computer program when executed by the processor further performs the steps of:

positioning a current position; acquiring time consumption required for purchasing logistics of the electric toothbrush brush head according to the current position; acquiring an integrated value of dynamic life attenuation of the electric toothbrush head and static life attenuation of the electric toothbrush head, and calculating average daily life attenuation of the electric toothbrush head; determining the residual life redundancy corresponding to the purchase prompt according to the time consumption required for purchasing the logistics of the electric toothbrush brush head and the average daily life decay of the electric toothbrush brush head; when the detected residual service life of the electric toothbrush head reaches the residual service life redundancy amount, pushing a purchase prompt.

In one embodiment, the computer program when executed by the processor further performs the steps of:

pushing an address information confirmation message, wherein the address information confirmation message is used for requesting a user to determine whether a purchase address is an address corresponding to the current position; when the address confirmed message is received, a new electric toothbrush brushhead is automatically ordered for purchase.

In one embodiment, the computer program when executed by the processor further performs the steps of:

acquiring a tooth image of a user; according to the tooth image of the user, positioning the dental plaque position on the tooth surface of the user; when the brush head of the electric toothbrush moves to the dental plaque position, the vibration frequency of the electric toothbrush is increased.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.