阅读说明：本技术 一种车内婴幼儿监测系统及方法 (In-vehicle infant monitoring system and method ) 是由 宋培城 朱淑娟 潘正祥 陈建铭 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种车内婴幼儿监测系统及方法,具体涉及车联网感知监测技术领域。该系统包括可安装在婴幼儿鞋底内或衣服背后的可拆卸标签式传感器和安装在车内的多个监测节点传感器,监测节点传感器可与车内智能终端以及用户手机连接进行数据交互,可对机动车状态及车内环境数据进行监测与报警,同时可以使用蓝牙对携带标签式传感器的婴幼儿位置进行确定,标签式传感器可以向监测节点传感器发送自身位置和运动状态。对于实际应用中的复杂情况,该系统在探测场景信息的基础上使用婴幼儿监测与报警方法,能够对车内环境出现危险因素,婴幼儿遗留在车内以及遗留时间过长,婴幼儿车内跌落以及打开车门走失等多种情况进行监测与报警。(The invention discloses a system and a method for monitoring infants in a vehicle, and particularly relates to the technical field of vehicle networking perception monitoring. The system comprises a detachable label type sensor which can be installed in the sole of an infant or behind clothes and a plurality of monitoring node sensors which are installed in a vehicle, wherein the monitoring node sensors can be connected with an intelligent terminal and a user mobile phone in the vehicle for data interaction, the state of a motor vehicle and the environmental data in the vehicle can be monitored and alarmed, the position of the infant carrying the label type sensor can be determined by using Bluetooth, and the label type sensor can send the position and the motion state of the infant to the monitoring node sensors. For complex conditions in practical application, the system uses the infant monitoring and alarming method on the basis of detecting scene information, and can monitor and alarm various conditions such as dangerous factors in the environment in the car, the infant left in the car, too long time left in the car, falling of the infant in the car, car door opening loss and the like.)

1. An in-vehicle infant monitoring system is characterized by comprising a tag type sensor and a monitoring node sensor, wherein the tag type sensor and the monitoring node sensor perform data interaction through Bluetooth;

the tag type sensor comprises a gyroscope, an accelerometer, a first microprocessor, a first power supply and a first Bluetooth chip and is used for detecting the motion state of the infant and sending data to the monitoring node sensor through the first Bluetooth chip;

the monitoring node sensor comprises a WiFi module, a second Bluetooth chip, a temperature detection module, a second microprocessor, a carbon monoxide concentration detection module, a carbon dioxide concentration detection module, a power module, a flash lamp and a buzzer module, is used for acquiring motion state data and positions of infants, calculating the distance between the monitoring node sensor and the tag type sensor, performing data interaction with vehicle-mounted terminal equipment, detecting the concentrations of carbon monoxide and carbon dioxide in a vehicle, detecting the temperature in the vehicle, and performing data interaction with a user mobile phone through the second Bluetooth chip.

2. The in-vehicle infant monitoring system according to claim 1, wherein the tag sensor is mounted on the infant body, detects the movement state of the infant, and transmits data to the monitoring node sensor via bluetooth.

3. The in-vehicle infant monitoring system according to claim 1, wherein the monitoring node sensor acquires and stores the MAC addresses and the current time and the current position of other unfamiliar sensor Bluetooth chips passing around the vehicle through a second Bluetooth module, and judges the lost route of the infant whether the infant passes through the vehicle or not through information shared in the Internet of vehicles;

first bluetooth chip and second bluetooth chip are for having the bluetooth chip of bluetooth 5.0 standard, use signal strength information to calculate the distance between two bluetooth chips, and then judge the relative position of infant in the car according to the distance between a plurality of monitoring node sensors in label formula sensor and the car.

4. A method of monitoring an infant in a vehicle using the system of any one of claims 1 to 3, comprising the steps of:

s1, when the monitoring node sensor detects that the mobile phone of the user leaves the car, if the infant is still in the car, the user is reminded;

s2, when the infant is in the car, no matter whether the mobile phone of the user is in the car, the monitoring node sensor monitors the environment in the car and the state of the infant, and if the temperature in the car is too high or too low and the concentration of carbon monoxide or carbon dioxide is too high, the monitoring node sensor protects and gives an alarm;

s3, when the infant is in the car, no matter whether the mobile phone of the user is in the car, the monitoring node sensor monitors the environment in the car and the state of the infant, and if the infant falls down, alarm information is sent to the user;

s4, when the fact that the infant leaves the car is monitored, alarm information is sent to a mobile phone of a user through the car-mounted terminal and the monitoring node sensor;

s5, detecting a strange tag type sensor passing around a vehicle by a monitoring node sensor, storing the MAC address, the current time and the position of the vehicle of the strange tag type sensor, and sending the MAC address, the current time and the position of the vehicle to a vehicle networking platform through a vehicle-mounted terminal, wherein when an infant is lost, the moving route of the infant after the infant is lost can be obtained through tag type sensor information stored by strange equipment, so that the lost infant can be conveniently and quickly found;

and S6, when the monitoring node sensor detects that the time that the infant is left in the vehicle after the vehicle is stationary exceeds a set time value, the vehicle-mounted terminal and the monitoring node sensor are utilized to send alarm information to a mobile phone of a user.

5. The method according to claim 4, wherein in step S1, the distance between the monitoring node sensor and the mobile phone of the user is calculated by Bluetooth signal intensity to judge that the user leaves the car; the reminding mode is that when the vehicle mounted terminal still supplies power, the vehicle mounted terminal is used for sending information to the driver to inform that the infant is left over in the car, and when the vehicle mounted terminal stops working, the monitoring node sensor uses the second Bluetooth chip and the WiFi module to send alarm information to the driver's mobile phone, so that the driver is ensured to receive the alarm information.

6. The method for monitoring the infant in the vehicle as claimed in claim 4, wherein in S2, the protection and alarm manner is adopted such that when the vehicle-mounted terminal is in an activated state, the monitoring node sensor sends information to the vehicle-mounted terminal, the vehicle-mounted terminal turns on an air conditioner to protect the infant in the vehicle, and simultaneously turns on a lamp to continuously flash for alarm; meanwhile, the vehicle-mounted terminal sends alarm information to the driver mobile phone by using the connection with the base station and the WiFi, and the monitoring node sensor sends the alarm information to the driver mobile phone by using the second Bluetooth chip to ensure that the driver receives the alarm information;

if the vehicle-mounted terminal is closed, other electronic equipment of the vehicle stops working, the monitoring node sensors cannot control the vehicle at the moment, information is sent to the mobile phone of the driver, and meanwhile, flash lamps and buzzers of all the monitoring node sensors are turned on to send alarm information to the periphery.

7. The in-vehicle infant monitoring method according to claim 4, wherein in the step S3, the manner of sending the alarm information when the infant falls down in the vehicle is that when the in-vehicle terminal is in an activated state, the in-vehicle terminal sends the alarm information to the driver 'S mobile phone by using the connection with the base station and WiFi, and the monitoring node sensor sends the alarm information to the driver' S mobile phone by using the second Bluetooth chip to ensure that the driver receives the alarm information;

if the vehicle-mounted terminal is closed, other electronic equipment of the vehicle stops working, the monitoring node sensors cannot control the vehicle at the moment, information is sent to the mobile phone of the driver, and meanwhile, flash lamps and buzzers of all the monitoring node sensors are turned on to send alarm information to the periphery.

Technical Field

The invention relates to the technical field of car networking perception monitoring, in particular to a system and a method for monitoring an infant in a car.

Background

With the increase of the quantity of vehicles, automobiles become an important part in family life, the safety problem of infants in the automobiles is always very important, and with the continuous improvement of the intelligent degree of the automobiles, the monitoring and protection of the infants in the automobiles also need to be developed more perfectly and reliably.

For the problem of monitoring and protecting the infant in the car, the safety seat is an effective and safe method, and some countries abroad have legal requirements for the safety seat, but the domestic safety seat has higher price, so the utilization rate of the domestic safety seat is not high, and meanwhile, the safety seat also faces other problems when used domestically:

when the infants are younger and are placed in the safety seat, the infants may cry for some reasons and need to be taken out of the safety seat, and after the infants are put back to the safety seat to be fixed after the infants are easy to cry, parents feel troublesome and need to use the safety seat less or not, but place the infants in the automobile seat or hold the infants in arms for convenient care;

with the increase of the age of the infant, the infant may conflict with the safety seat and is not willing to stay in the safety seat which is firmly fixed, and with the increase of the age of the infant, the infant also has the capability of independently leaving from the safety seat, and at the moment, the related sensor on the safety seat cannot effectively monitor and protect the infant;

safety seats, as an effective and safe approach, require a combination of institutional and family safety awareness. However, an effective monitoring and protecting method is also needed for the situation that a safety seat is not installed or an infant leaves the safety seat to move in a vehicle, and the existing many solutions have certain limitations as shown below:

chinese patent publication No. CN208569840U discloses an in-vehicle life sensing alarm device, which uses crying sound to judge the infant in the vehicle, when the vehicle stops and does not flameout, the environmental sound and the engine noise will affect the acquisition of the crying sound, and further affect the accuracy of data processing, and when the infant falls asleep and is left in the vehicle, if the temperature in the vehicle is too high, the temperature in the vehicle will be too low, and even if the oxygen concentration in the vehicle is too low, and other dangerous situations occur, effective detection cannot be performed;

chinese patent publication No. CN201820082706.0 discloses a reminding seat cushion for infants trapped in a car, wherein when environmental devices such as a pressure sensor or an infrared sensor are installed under a seat, the sensor is single, and when an article with the weight approximately the same as that of the infant is placed on the seat and has a higher temperature under the influence of environmental temperature, misdetection may occur, and as the age of the infant increases, the weight also increases, and the clothes worn by the infant also affects the weight, which is an index, to cause misdetection;

for the infrared detection mode, the pyroelectric sensor detects thermal radiation by utilizing the principle that electric polarization is generated when the temperature of a crystal changes, but the common pyroelectric sensor can only detect when the temperature difference is generated by the motion of a human body, and cannot detect when the human body is static, so that the pyroelectric sensor cannot detect when the temperature in a vehicle is higher and an infant is in a static state;

for the mode of using millimeter waves or other types of radars, the interference is large due to the complex environment in the automobile and the influence of automobile seats and other equipment, the requirement on the accuracy of data processing is high, and the high reliability is difficult to achieve;

for the mode of using wearable equipment such as a bracelet, the equipment is small and can cause curiosity of infants to bring new risk factors;

for the mode of detecting the infant in the car by using the biomedical signal processing mode, most biomedical signals of a human body are very weak and can not be detected basically in a non-contact mode, so the use is less.

In an actual scene, the safety monitoring and protection of the infant in the car are required to be multifaceted, and a proper method and a proper system are required to monitor and protect the conditions that the infant falls down from a seat or falls down in the car, the temperature in the car is too high or too low, other concentrations of carbon monoxide and carbon dioxide in the car are too high, the infant is left in the car after sleeping, the door of the infant is opened to leave the car, and the like.

Disclosure of Invention

The invention aims to overcome the defects and provides an in-vehicle infant monitoring system and method for monitoring the in-vehicle environment and the infant state through a monitoring node sensor and processing the acquired information so as to protect and alarm the infant.

The invention specifically adopts the following technical scheme:

an in-vehicle infant monitoring system comprises a tag type sensor and a monitoring node sensor, wherein the tag type sensor and the monitoring node sensor perform data interaction through Bluetooth;

the tag type sensor comprises a gyroscope, an accelerometer, a first microprocessor, a first power supply and a first Bluetooth chip and is used for detecting the motion state of the infant and sending data to the monitoring node sensor through the first Bluetooth chip;

the monitoring node sensor comprises a WiFi module, a second Bluetooth chip, a temperature detection module, a second microprocessor, a carbon monoxide concentration detection module, a carbon dioxide concentration detection module, a power module, a flash lamp and a buzzer module, is used for acquiring motion state data and positions of infants, calculating the distance between the monitoring node sensor and the tag type sensor, performing data interaction with vehicle-mounted terminal equipment, detecting the concentrations of carbon monoxide and carbon dioxide in a vehicle, detecting the temperature in the vehicle, and performing data interaction with a user mobile phone through the second Bluetooth chip.

Preferably, the tag type sensor is installed on the infant body, detects the motion state of the infant, and transmits data to the monitoring node sensor through bluetooth.

Preferably, the monitoring node sensor acquires and stores MAC addresses and current time and positions of other strange tag type sensor Bluetooth chips passing by the periphery of the automobile through the second Bluetooth module, and acquires whether the infant passes through the automobile after being lost or not through information shared in the Internet of vehicles to judge the lost route of the infant;

first bluetooth chip and second bluetooth chip are for having the bluetooth chip of bluetooth 5.0 standard, use signal strength to calculate the distance between two bluetooth chips, and then judge the position of infant in the car according to the distance between a plurality of monitoring node sensors in tag formula sensor and the car.

Preferably, the method comprises the following steps:

s1, when the monitoring node sensor detects that the mobile phone of the user leaves the car, if the infant is still in the car, the user is reminded;

s2, when the infant is in the car, no matter whether the mobile phone of the user is in the car, the monitoring node sensor monitors the environment in the car and the state of the infant, and if the temperature in the car is too high or too low and the concentration of carbon monoxide or carbon dioxide is too high, the monitoring node sensor protects and gives an alarm;

s3, when the infant is in the car, no matter whether the mobile phone of the user is in the car, the monitoring node sensor monitors the environment in the car and the state of the infant, and if the infant falls down, alarm information is sent to the user;

s4, when the fact that the infant leaves the car is monitored, alarm information is sent to a mobile phone of a user through the car-mounted terminal and the monitoring node sensor;

s5, detecting a strange tag type sensor passing around a vehicle by a monitoring node sensor, storing the MAC address, the current time and the position of the vehicle of the strange tag type sensor, and sending the MAC address, the current time and the position of the vehicle to a vehicle networking platform through a vehicle-mounted terminal, wherein when an infant is lost, the moving route of the infant after the infant is lost can be obtained through tag type sensor information stored by strange equipment, so that the lost infant can be conveniently and quickly found;

and S6, when the monitoring node sensor detects that the time that the infant is left in the vehicle after the vehicle is stationary exceeds a set time value, the vehicle-mounted terminal and the monitoring node sensor are utilized to send alarm information to a mobile phone of a user.

Preferably, in S1, the distance between the monitoring node sensor and the mobile phone of the user is calculated by the bluetooth signal strength when the user leaves the vehicle; the reminding mode is that when the vehicle mounted terminal still supplies power, the vehicle mounted terminal is used for sending information to the driver to inform that the infant is left over in the car, and when the vehicle mounted terminal stops working, the monitoring node sensor uses the second Bluetooth chip and the WiFi module to send alarm information to the driver's mobile phone, so that the driver is ensured to receive the alarm information.

Preferably, in S2, the protection and alarm method is that when the vehicle-mounted terminal is in a start state, the monitoring node sensor sends information to the vehicle-mounted terminal, and the vehicle-mounted terminal turns on an air conditioner to protect an infant in the vehicle and turns on a lamp to continuously flash for alarm; meanwhile, the vehicle-mounted terminal sends alarm information to the driver mobile phone by using the connection with the base station and the WiFi, and the monitoring node sensor sends the alarm information to the driver mobile phone by using the second Bluetooth chip to ensure that the driver receives the alarm information;

if the vehicle-mounted terminal is closed, other electronic equipment of the vehicle stops working, the monitoring node sensors cannot control the vehicle at the moment, information is sent to the mobile phone of the driver, and meanwhile, flash lamps and buzzers of all the monitoring node sensors are turned on to send alarm information to the periphery.

Preferably, in S3, the alarm information is sent when the infant falls down in the vehicle in a manner that when the vehicle-mounted terminal is in a start state, the vehicle-mounted terminal sends the alarm information to the driver 'S mobile phone by using the connection with the base station and WiFi, and the monitoring node sensor sends the alarm information to the driver' S mobile phone by using the second bluetooth chip to ensure that the driver receives the alarm information;

if the vehicle-mounted terminal is closed, other electronic equipment of the vehicle stops working, the monitoring node sensors cannot control the vehicle at the moment, information is sent to the mobile phone of the driver, and meanwhile, flash lamps and buzzers of all the monitoring node sensors are turned on to send alarm information to the periphery.

The invention has the following beneficial effects:

infant monitoring system uses the label formula sensor of wearing behind infant's sole or the clothes to monitor infant's position and motion state, compares in other non-contact detection modes more accurate reliable, does not calculate in label formula sensor simultaneously, only sends out the data of acquireing, and the consumption is lower, can continue a journey longer time to the label formula sensor that uses battery powered.

The in-car infant monitoring system can judge and process various complex conditions by configuring monitoring and protection rules, and can monitor and alarm various conditions such as the in-car environment, the infant left in the car and the left time is too long, the infant falls in the car and opens the car door to lose, and the like.

Monitoring node sensor among the infant monitoring system in the car can be to the MAC address and current time and the position of bluetooth chip among the strange tag formula sensor around the vehicle record, shares through using the car networking application and can calculate the route of moving of infant that wanders away, and the infant that is convenient for swiftly finds.

Drawings

FIG. 1 is a block diagram of a tag sensor assembly module;

FIG. 2 is a block diagram of a monitoring node sensor composition module;

FIG. 3 is a schematic diagram of the detection of the moving route of a lost infant;

fig. 4 is a schematic diagram of detecting the position of an infant by a monitoring node sensor.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, the in-vehicle infant monitoring system comprises a tag type sensor and a monitoring node sensor, wherein the tag type sensor and the monitoring node sensor perform data interaction through Bluetooth;

the tag type sensor comprises a gyroscope, an accelerometer, a first microprocessor, a first power supply and a first Bluetooth chip and is used for detecting the motion state of the infant and sending data to the monitoring node sensor through the first Bluetooth chip, the tag type sensor can be installed at the position where the infant cannot be observed by the upper infant on the back of the infant sole and the back of clothes, and the motion state of the infant can be detected.

The monitoring node sensor comprises a WiFi module, a second Bluetooth chip, a temperature detection module, a second microprocessor, a carbon monoxide concentration detection module, a carbon dioxide concentration detection module, a power module, a flash lamp and a buzzer module, and is used for acquiring motion state data and positions of infants, calculating the distance between the monitoring node sensor and the tag type sensor, performing data interaction with vehicle-mounted terminal equipment, detecting the concentrations of carbon monoxide and carbon dioxide in a vehicle, detecting the temperature in the vehicle, and performing data interaction by connecting the monitoring node sensor with a mobile phone of a user through the second Bluetooth chip.

The first microprocessor and the second microprocessor can adopt but are not limited to STM32 series chips or 8051 series chips and the like;

the gyroscope and the accelerometer used by the label sensor can use a single chip or an mpu6050 chip comprising the two chips, and can adopt but are not limited to mpu6050 series chips;

as shown in fig. 3 and 4, the monitoring node sensor acquires and stores MAC addresses and current time and positions of other strange tag type sensor bluetooth chips passing around the automobile through the second bluetooth module, and acquires whether an infant passes through the automobile after being lost or not through information shared in the internet of vehicles to judge a lost route of the infant; first bluetooth chip and second bluetooth chip are for having the bluetooth chip of bluetooth 5.0 standard, use signal strength to calculate the distance between two bluetooth chips, and then judge the position of infant in the car according to the distance between a plurality of monitoring node sensors in tag formula sensor and the car.

The system comprises a monitoring node sensor, a road, a moving route of an infant after the infant leaves a car, a moving route of the infant leaving the car, a road, a monitoring node sensor, other strange vehicles parked on the roadside, a base station around the road, a vehicle leaving the infant, a Bluetooth signal detection range indication of the monitoring node sensor, a distance connecting line indication diagram of the monitoring node sensor, 8, a distance connecting line indication diagram of the label type sensor worn by the infant and the monitoring node sensor, 9, a position where the infant is located, 10 and 11.

According to the in-vehicle infant monitoring method based on the in-vehicle infant monitoring system, when the monitoring node sensor is installed, the label type sensor and the monitoring node sensor need to be paired to realize data interaction, the user mobile phone and the vehicle-mounted terminal device need to be paired and connected with the detection node sensor, so that alarm information can be sent and received, after the data interaction is completed, the monitoring node sensor is installed at a fixed position in a vehicle, and an infant monitoring and protecting rule of the monitoring node sensor is configured by the mobile phone; the method comprises the following steps:

s1, when the monitoring node sensor detects that the mobile phone of the user leaves the car, if the infant is still in the car, the user is reminded;

s2, when the infant is in the car, no matter whether the mobile phone of the user is in the car, the monitoring node sensor monitors the environment in the car and the state of the infant, and if the temperature in the car is too high or too low and the concentration of carbon monoxide or carbon dioxide is too high, the monitoring node sensor protects and gives an alarm;

s3, when the infant is in the car, no matter whether the mobile phone of the user is in the car, the monitoring node sensor monitors the environment in the car and the state of the infant, and if the infant falls down, alarm information is sent to the user;

s4, when the fact that the infant leaves the car is monitored, alarm information is sent to a mobile phone of a user through the car-mounted terminal and the monitoring node sensor;

s5, detecting a strange tag type sensor passing around a vehicle by a monitoring node sensor, storing the MAC address, the current time and the position of the vehicle of the strange tag type sensor, and sending the MAC address, the current time and the position of the vehicle to a vehicle networking platform through a vehicle-mounted terminal, wherein when an infant is lost, the moving route of the infant after the infant is lost can be obtained through tag type sensor information stored by strange equipment, so that the lost infant can be conveniently and quickly found;

s6, when the monitoring node sensor detects that the time of the infant left in the vehicle after the vehicle is static exceeds a set time value, the vehicle-mounted terminal and the monitoring node sensor are used for sending alarm information to a mobile phone of a user, when the monitoring node sensor detects that the time of the infant left in the vehicle after the vehicle is static exceeds the set time value, when the vehicle stops and is not flameout, the time value is usually set for not 5 minutes, when the vehicle stops and is flameout, the time value is usually set for not 10 minutes, and when the time exceeds the set value, the vehicle-mounted terminal and the monitoring node sensor are used for sending the alarm information to the mobile phone of a family.

In step S1, the distance between the monitoring node sensor and the mobile phone of the user is calculated by the bluetooth signal strength when the user leaves the car; the reminding mode is that when the vehicle mounted terminal still supplies power, the vehicle mounted terminal is used for sending information to the driver to inform that the infant is left over in the car, and when the vehicle mounted terminal stops working, the monitoring node sensor uses the second Bluetooth chip and the WiFi module to send alarm information to the driver's mobile phone, so that the driver is ensured to receive the alarm information.

Aiming at the step S2, the protection and alarm method is that when the vehicle-mounted terminal is in a starting state, the monitoring node sensor sends information to the vehicle-mounted terminal, the vehicle-mounted terminal turns on an air conditioner to protect the infant in the vehicle, and simultaneously turns on a lamp to continuously flash for alarming; meanwhile, the vehicle-mounted terminal sends alarm information to the driver mobile phone by using the connection with the base station and the WiFi, and the monitoring node sensor sends the alarm information to the driver mobile phone by using the second Bluetooth chip to ensure that the driver receives the alarm information;

if the vehicle-mounted terminal is closed, other electronic equipment of the vehicle stops working, the monitoring node sensors cannot control the vehicle at the moment, information is sent to the mobile phone of the driver, and meanwhile, flash lamps and buzzers of all the monitoring node sensors are turned on to send alarm information to the periphery.

In step S3, when the infant falls down in the vehicle, the alarm information is sent in a manner that when the vehicle-mounted terminal is in a start state, the vehicle-mounted terminal sends the alarm information to the driver 'S mobile phone by using the connection with the base station and the WiFi, and the monitoring node sensor sends the alarm information to the driver' S mobile phone by using the second bluetooth chip to ensure that the driver receives the alarm information;

if the vehicle-mounted terminal is closed, other electronic equipment of the vehicle stops working, the monitoring node sensors cannot control the vehicle at the moment, information is sent to the mobile phone of the driver, and meanwhile, flash lamps and buzzers of all the monitoring node sensors are turned on to send alarm information to the periphery.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.