阅读说明：本技术 通过原车中控系统实时显示胎压的装置及方法 (Device and method for displaying tire pressure in real time through original vehicle central control system ) 是由 苏达武 于 2020-06-10 设计创作，主要内容包括：本发明公开了通过原车中控系统实时显示胎压的装置及方法,包括有原车中控系统、轮胎监测装置、胎压监测主机以及将胎压监测主机的数据传输至中控系统的转接装置,轮胎监测装置分别设置在四个车轮的外胎内侧并与胎压监测主机通讯连接,胎压监测主机与转接装置通讯连接,转接装置与中控系统电连接。梭型壳体内设置有主控芯片、电池模块、电源转换模块、通讯模块,压力感应器、温度传感器以及发电单元；发电单元通过电源转换模块分别与主控芯片和电池模块电连接,主控单元与通讯模块、温度传感器以及压力感应器电连接。该装置可以通过汽车中控系统实时显示轮胎状况,并能够自动为安装在轮胎内的轮胎监测装置充电,显著提高其使用寿命。(The invention discloses a device and a method for displaying tire pressure in real time through an original vehicle central control system, which comprises the original vehicle central control system, a tire monitoring device, a tire pressure monitoring host and a switching device for transmitting data of the tire pressure monitoring host to the central control system, wherein the tire monitoring device is respectively arranged on the inner sides of outer tires of four wheels and is in communication connection with the tire pressure monitoring host, the tire pressure monitoring host is in communication connection with the switching device, and the switching device is electrically connected with the central control system. A main control chip, a battery module, a power conversion module, a communication module, a pressure sensor, a temperature sensor and a power generation unit are arranged in the shuttle-shaped shell; the power generation unit is respectively and electrically connected with the main control chip and the battery module through the power conversion module, and the main control unit is electrically connected with the communication module, the temperature sensor and the pressure sensor. The device can display the tire condition in real time through an automobile central control system, and can automatically charge the tire monitoring device installed in the tire, thereby obviously prolonging the service life of the device.)

1. The device for displaying the tire pressure in real time through the original vehicle central control system is characterized by comprising the original vehicle central control system, a tire monitoring device, a tire pressure monitoring host and a switching device for transmitting the data of the tire pressure monitoring host to the central control system, wherein the tire monitoring device is respectively arranged on the inner sides of outer tires of four wheels and is in communication connection with the tire pressure monitoring host, the tire pressure monitoring host is in communication connection with the switching device, and the switching device is electrically connected with the central control system.

2. The device for displaying the tire pressure in real time through the original vehicle central control system according to claim 1, wherein: the tire monitoring device comprises a shuttle-shaped shell, wherein a main control chip, a battery module, a power supply conversion module, a communication module, a pressure sensor, a temperature sensor and a power generation unit are arranged in the shuttle-shaped shell; the power generation unit is respectively and electrically connected with the main control chip and the battery module through the power conversion module, and the main control unit is electrically connected with the temperature sensor and the pressure sensor.

3. The device for displaying the tire pressure in real time through the original vehicle central control system according to claim 2, wherein: the power generation module is a flexible thermoelectric sheet, one surface of the flexible thermoelectric sheet is tightly attached to the inner wall surface of the outer cover, and the other end surface of the flexible thermoelectric sheet faces to the inner cavity of the shuttle-shaped shell.

4. The device for displaying the tire pressure in real time through the original vehicle central control system according to claim 2, wherein: the pressure sensor comprises a pressure sensing plate and a plurality of sensing bulges, the sensing bulges are elastically connected with the pressure sensing plate, a plurality of slotted holes are formed in the binding surface of the shuttle-shaped shell and the outer wall of the inner tube, and the bulge protrudes out of the slotted holes and is bound with the outer wall surface of the inner tube.

5. The device for displaying the tire pressure in real time through the original vehicle central control system according to claim 1, wherein:

the tire pressure monitoring host comprises an RF module and a Bluetooth module, the tire pressure monitoring host is in communication connection with the tire monitoring device through the RF module, and the tire pressure monitoring host is in communication connection with the switching device through the first Bluetooth module.

6. The device for displaying the tire pressure in real time through the original vehicle central control system according to claim 1 or 6, wherein: the switching device comprises a second Bluetooth module and a USB interface, the switching device is in communication connection with the tire pressure monitoring host through the second Bluetooth module, and the switching device is connected with an original vehicle central control system through a USB data line.

7. The method for displaying the tire pressure in real time through the original vehicle central control system is characterized in that: the method comprises the following steps:

s1, the four tire monitoring devices are respectively in communication connection with a tire pressure monitoring host through RF modules, and the tire pressure monitoring host is connected with an original vehicle central control system through a switching device;

s2, when the automobile is not started and the tire monitoring device is in a dormant state, the tire pressure alarm threshold value and the tire data acquisition frequency can be set through the original central control system;

s3, after the automobile is started, the original central control system displays the tire pressure information and the temperature information of the tire in real time, and is also provided with an alarm unit, wherein the alarm unit comprises an under-pressure alarm unit and a tire pressure alarm unit;

s4, when the tire pressure is smaller than the set lowest threshold value, prompting the vehicle owner to supplement the air pressure immediately; when the tire pressure is higher than the set highest threshold value, the numerical value of the temperature sensor is combined to remind a vehicle owner that the tire pressure of the inner tube is too high due to the overhigh tire temperature, and the tire is blown out carefully;

s5, when the under-voltage alarm unit rings, the battery module of the tire monitoring device is prompted to store the electric quantity to resist the set voltage value, and the battery module needs to be charged.

8. The method for displaying the tire pressure in real time through the original vehicle central control system according to claim 1, wherein the method comprises the following steps:

the charging of the battery module follows the following steps:

a1, when the undervoltage alarm unit is not triggered, the connection between the flexible thermoelectric sheet and the power supply conversion module is open, and the battery module provides working voltage for electrical appliances in the tire monitoring device;

a2, when the under-voltage alarm unit is triggered, the battery module needs to be charged; the temperature sensor detects the temperature of the outer tire and the temperature in the shuttle-shaped shell, and the temperature difference between the temperature of the outer tire and the temperature in the shuttle-shaped shell is larger than a set threshold value, so that the main control chip controls a connecting passage between the flexible thermoelectric sheet and the power supply conversion module to charge the battery module;

a3, when the battery module is fully connected, the main control chip controls the open circuit of the connection between the flexible thermoelectric sheet and the power conversion module, and the battery module is charged.

Technical Field

The invention relates to the technical field of automobile electronics, in particular to a device and a method for displaying tire pressure in real time through an original automobile central control system.

Background

The tire pressure monitoring is used for automatically monitoring the tire pressure in real time when the automobile runs and giving an alarm on the leakage and high pressure of the tire so as to ensure the driving safety, and is a life safety guarantee early warning system for drivers and passengers. According to relevant regulations, a mandatory installation regulation of the tire pressure monitoring system is started to be executed from 1 month and 1 day of 2020, and all vehicles produced in China have to be provided with the tire pressure monitoring system.

However, in China, a large number of sold stock automobiles are not provided with the tire pressure monitoring system. Currently, there are several methods for installing tire pressure monitoring systems for these vehicles, one of which is: the tire pressure monitoring host with a screen (LCD/LED display) is installed on an automobile driving platform. The host computer receives the signal transmitted by the tire pressure monitoring terminal module, displays the pressure and temperature data of each tire on a screen, and sends out an alarm signal according to the abnormal condition if the pressure or temperature of the tire is abnormal; the disadvantage is that it affects the driver's line of sight and violates the relevant driving regulations. The second method comprises the following steps: the original central control host of the vehicle is replaced by a rear-mounted navigation system supporting the tire pressure monitoring system, the rear-mounted navigation system is connected with the tire pressure monitoring host for communication in a serial port mode, and the rear-mounted navigation host is used for displaying tire pressure data and giving an alarm; the method is troublesome in installation, needs to replace the original central control system and is high in price.

Chinese patent, grant publication no: CN104527339B, announcement date: in 2017, 1 month and 18 days, a power management method of a tire pressure monitoring system is provided, the tire pressure monitoring system comprises a plurality of sensing nodes and a display which is connected with the sensing nodes and displays tire pressure values fed back by the sensing nodes, and the power management method comprises the following steps: a step of acquiring vital sign signals at least within the range of the main driver seat; waking up the tire pressure monitoring system when the vital sign signal is detected, wherein the waking up includes sending a signal to each sensing node, and enabling the sensing node to send sampling data according to a preset time interval T0; and when the vital sign signals are not detected, the tire pressure monitoring system is in a dormant state, wherein the step of sending signals to each sensing node is included, the sensing node is enabled to stop sending the sampling data and enter a standby state, only the function of monitoring the awakening signals is reserved, and the display screen is turned off. The purpose of this scheme is in order to save the power supply energy of tire pressure sensor and then prolong its life, but does not solve the difficult problem of power supply of tire pressure sensor.

Disclosure of Invention

The invention aims to solve the problem that the conventional automobile is inconvenient to install a tire pressure display device and the problem that the conventional tire pressure sensor is not easy to supply energy once installed in a tire, and provides a device and a method for displaying the tire pressure in real time through an original automobile central control system.

In order to achieve the technical purpose, the invention provides a device for displaying the tire pressure in real time through an original vehicle central control system, which comprises the original vehicle central control system, a tire monitoring device, a tire pressure monitoring host and a switching device for transmitting the data of the tire pressure monitoring host to the central control system, wherein the tire monitoring device is respectively arranged on the inner sides of outer tires of four wheels and is in communication connection with the tire pressure monitoring host, the tire pressure monitoring host is in communication connection with the switching device, and the switching device is electrically connected with the central control system.

In this scheme, tire monitoring device installs between the cover tire and the inner tube of a tyre of car, is connected with tire pressure monitoring host computer communication, and the tire pressure monitoring host computer passes through switching device and is connected with car center control system for the temperature of tire, tire pressure and tire monitoring device's power data transmission to center control system, and show through center control system's display screen, the problem that the tire pressure monitoring host computer of solving the post-purchase occupies instrument desk space and hinders driving sight or the high cost problem of accuse navigation in the device change.

Preferably, the tire monitoring device comprises a shuttle-shaped shell, wherein a main control chip, a battery module, a power conversion module, a communication module, a pressure sensor, a temperature sensor and a power generation unit are arranged in the shuttle-shaped shell; the power generation unit is respectively and electrically connected with the main control chip and the battery module through the power conversion module, and the main control unit is electrically connected with the communication module, the temperature sensor and the pressure sensor.

In this scheme, the tire monitoring device appearance is shuttle type casing, because the tire monitoring device installs between the cover tire and the inner tube of a tyre of car, adopts shuttle type shell structure can improve tire monitoring device's compressive capacity, and makes the contact surface more level and smooth, does not influence automobile tire's performance, electrical components in the protection casing that also can be better, and shuttle type shell adopts high temperature resistant plastic products to make, can have fine data wireless transmission performance.

Preferably, the power generation module is a flexible thermoelectric sheet, one surface of the flexible thermoelectric sheet is closely attached to the inner wall surface of the outer tire, and the other end surface of the flexible thermoelectric sheet faces the inner cavity of the shuttle-shaped shell.

In the scheme, the temperature of the outer tire can reach 100-150 ℃ when the automobile runs at high speed, and the residual heat after the automobile stops can be utilized to supplement electric energy for the conductive battery module through the thermoelectric piece, so that the endurance time is prolonged.

Preferably, the pressure sensor comprises a pressure sensing plate and a plurality of sensing protrusions, the sensing protrusions are elastically connected with the pressure sensing plate, a plurality of slotted holes are formed in the binding surface of the shuttle-shaped shell and the outer wall of the inner tube, and the protrusions protrude out of the slotted holes and are bound with the outer wall surface of the inner tube.

In this scheme, the inner tube of a tyre is protruding through extrusion response, and the response is protruding to give pressure sensing plate with pressure transmission, and pressure sensing plate is through sending pressure signal to main control chip, and main control chip has advanced digital transformation and has calculated each pressure value, and the tire pressure value measured for this scheme is promptly, and main control chip adopts general 51 singlechips just.

Preferably, the tire pressure monitoring host comprises an RF module and a Bluetooth module, the tire pressure monitoring host is in communication connection with the tire monitoring device through the RF module, and the tire pressure monitoring host is in communication connection with the switching device through the first Bluetooth module.

Preferably, the switching device comprises a second bluetooth module and a USB interface, the switching device is in communication connection with the tire pressure monitoring host through the second bluetooth module, and the switching device is connected with the original vehicle central control system through a USB data line.

The method for displaying the tire pressure in real time through the original vehicle central control system comprises the following steps:

s1, the four tire monitoring devices are respectively in communication connection with a tire pressure monitoring host through RF modules, and the tire pressure monitoring host is connected with an original vehicle central control system through a switching device;

s2, when the automobile is not started and the tire monitoring device is in a dormant state, the tire pressure alarm threshold value and the tire data acquisition frequency can be set through the original central control system;

s3, after the automobile is started, the original central control system displays the tire pressure information and the temperature information of the tire in real time, and is also provided with an alarm unit, wherein the alarm unit comprises an under-pressure alarm unit and a tire pressure alarm unit;

s4, when the tire pressure is smaller than the set lowest threshold value, prompting the vehicle owner to supplement the air pressure immediately; when the tire pressure is higher than the set highest threshold value, the numerical value of the temperature sensor is combined to remind a vehicle owner that the tire pressure of the inner tube is too high due to the overhigh tire temperature, and the tire is blown out carefully;

s5, when the under-voltage alarm unit rings, the battery module of the tire monitoring device is prompted to store the electric quantity to resist the set voltage value, and the battery module needs to be charged.

The charging of the battery module follows the following steps:

a1, when the undervoltage alarm unit is not triggered, the connection between the flexible thermoelectric sheet and the power supply conversion module is open, and the battery module provides working voltage for electrical appliances in the tire monitoring device;

a2, when the under-voltage alarm unit is triggered, the battery module needs to be charged; the temperature sensor detects the temperature of the outer tire and the temperature in the shuttle-shaped shell, and the temperature difference between the temperature of the outer tire and the temperature in the shuttle-shaped shell is larger than a set threshold (the threshold is set according to the power generation characteristic of the thermoelectric piece), so that the main control chip controls a connecting passage between the flexible thermoelectric piece and the power conversion module to charge the battery module;

a3, when the battery module is fully connected, the main control chip controls the open circuit of the connection between the flexible thermoelectric sheet and the power conversion module, and the battery module is charged.

The invention has the beneficial effects that: according to the device and the method for displaying the tire pressure in real time by the original vehicle central control system, the tire condition can be displayed in real time by the vehicle central control system, and the tire monitoring device arranged in the tire can be automatically charged, so that the service life of the device is obviously prolonged; the problem that the space of an instrument desk occupied by a post-purchased tire pressure monitoring host machine blocks driving sight or the problem of high cost of replacement central control navigation is solved.

Drawings

Fig. 1 is a schematic structural view of a device for displaying tire pressure in real time through an original vehicle central control system according to the present invention.

Fig. 2 is a schematic structural view of the tire monitoring device of the present invention.

The notation in the figure is: the system comprises a tire monitoring device 1, a tire pressure monitoring host machine 2, a switching device 3, a central control system 4 of an original vehicle, a shuttle-shaped shell 11, a main control chip 12, a power generation unit 13, a power conversion module 14, a battery module 15, a pressure sensing plate 16, a sensing bulge 17, a communication module 18 and a temperature sensor 19.

Detailed Description

For the purpose of better understanding the objects, technical solutions and advantages of the present invention, the following detailed description of the present invention with reference to the accompanying drawings and examples should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and not for limiting the scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the scope of the present invention.