Multi-parameter composite sensor based on tire pressure monitoring system and use method of multi-parameter composite sensor

Abstract

The invention relates to the technical field of tire pressure monitoring, in particular to a multi-parameter composite sensor based on a tire pressure monitoring system and a using method thereof.The multi-parameter composite sensor comprises a sensor shell, a connecting block and a power source, the connecting block is welded and fixed to one end of the sensor shell, a through hole is formed in the connecting block, and an inflating valve is installed in the through hole; a locking bolt is mounted on one side of the inflating valve; the inflating valve comprises an inflating valve main body, one end of the inflating valve main body is fixedly connected with an internal connecting rod communicated with the inflating valve main body in a welded mode, the inner side of the end, away from the inflating valve main body, of the internal connecting rod is provided with an internal thread, and the locking bolt comprises a round block. And meanwhile, the air inlet direction and the air hole size of an original inflating valve arranged in the tire cannot be changed, when the tire needs to be rescued through the leak repairing agent in the later period, the leak stopping agent filling pipeline can be directly inserted into the tire for filling, and convenience is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire pressure monitoring, and in particular to a multi-parameter composite sensor based on a tire pressure monitoring system and a use method thereof. Background Art

[0002] The multi-parameter composite sensor of the tire pressure monitoring system is an advanced automotive safety device used to monitor and report multiple key parameters of the vehicle tire in real time. This sensor integrates multiple sensing functions to ensure the performance of the tire and the driving safety of the vehicle;

[0003] The multi-parameter composite sensor of the tire pressure monitoring system is an important tool for improving vehicle safety and fuel efficiency, while also helping to reduce tire wear and environmental impact;

[0004] The multi-parameter composite sensor of the existing tire pressure monitoring system is generally connected to the valve stem by a locking bolt or an integral molding method, which causes the air intake direction of the valve stem inside the wheel hub to change. The changed air intake port is generally arranged perpendicular to the valve stem, which is affected by the locking bolt and is smaller than the original air hole. When a tire leaks in the later stage and a tire sealant is needed for rescue and tire repair, it increases the difficulty of adding the sealant into the tire. Therefore, in view of the above problems, a multi-parameter composite sensor based on a tire pressure monitoring system and a method for using the same are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-parameter composite sensor based on a tire pressure monitoring system and a method of using the same, so as to solve the problem that the multi-parameter composite sensor of the existing tire pressure monitoring system is generally connected to the valve stem by a locking bolt or an integral molding method, resulting in a change in the air intake direction of the valve stem arranged inside the wheel hub. The changed air intake port is generally arranged vertically to the valve stem, is affected by the locking bolt, and is smaller than the original air hole. When a tire leaks at a later time and a tire sealant is needed for rescue and tire repair, the difficulty of adding the sealant to the inside of the tire is increased.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-parameter composite sensor based on a tire pressure monitoring system and a method for using the same include a sensor housing, a connecting block and a power supply, wherein a connecting block is welded and fixed at one end of the sensor housing, a through hole is provided inside the connecting block, a valve is installed inside the through hole, and a locking bolt is installed on one side of the valve; the valve includes a valve body, an internal connecting rod connected to the valve body is welded and fixedly connected at one end of the valve body, an internal thread is provided on the inner side of one end of the internal connecting rod away from the valve body, the locking bolt includes a round block, an integral column is fixedly connected to one side of the round block, an external thread is provided on the outer side of the integral column, a hollow cavity is provided inside the integral column, and a hexagonal groove connected to the hollow cavity is provided inside the round block; a power supply and an integrated module are installed on the inner side of the other end of the sensor housing, and the integrated module includes a pressure sensor for measuring the internal pressure of the tire, a temperature sensor for detecting the internal temperature of the tire, an acceleration sensor for monitoring the vibration of the tire, a multi-sensor fusion module and a wireless transmission module, and the multi-sensor fusion module provides a redundant design by fusing the output data of the pressure sensor, the temperature sensor and the speed sensor.

[0008] As a further optimization of the present invention, the multi-sensor fusion module uses the following algorithm formula to process and fuse sensor data:

[0009] V fused =w p ·V P +w t ·V t +w a ·V a

[0010] Among them, V fused Represents the output value after fusion, V P 、V t and V a Respectively represent the output values ​​of the pressure sensor, temperature sensor and acceleration sensor, w p 、w t and w a is the weighting coefficient of each sensor data, satisfying w p +w t +w a =1 to ensure the weighted average of the data.

[0011] As a further optimized content of the present invention, wherein: the wireless transmission module transmits via a differential signal transmission mode, and the wireless transmission module includes a built-in digital signal processor.

[0012] As a further optimization of the present invention, the digital signal processor applies an adaptive filtering algorithm and an environmental compensation algorithm to adjust and correct data in real time.

[0013] As a further optimization of the present invention, the internal connecting rod and the integrated column have the same axis, the connecting rod and the integrated column are spirally connected by internal and external threads, and the integrated column is arranged at an end of the internal connecting rod with an arc-shaped inner edge.

[0014] As a further optimization of the present invention, the round block is tightly fitted to the connecting block, the angle between the round block and the integral column is 90°, the round block is tightly fitted to the connecting block, and the inner wall of the hollow cavity is a smooth surface.

[0015] As a further optimized content of the present invention, wherein: a rubber pad is fixedly connected to the edge of one end of the sensor housing, and a micro blind hole is opened inside the rubber pad.

[0016] As a further optimized content of the present invention, wherein: the rubber pad is arranged in an annular shape, the thickness of the rubber pad is twice the depth of the micro blind hole, a plurality of micro blind holes are provided, and the vertical section of the micro blind hole is a trapezoid.

[0017] As a further optimized content of the present invention, wherein: a pressure test hole is opened on the inner side of one end of the sensor housing, and the sensor housing is made of electromagnetic shielding material.

[0018] As a further optimized content of the present invention, the following steps are included: Step I): installing the sensor inside the tire;

[0019] During the installation process, first connect the valve stem and the sensor housing through the locking bolts. After the connection is completed, in the actual assembly process, connect the valve stem and the wheel hub to complete the assembly. During assembly, please note that: the sensor housing is tightly attached to the inner wall of the wheel hub through the rubber pad;

[0020] Step II): Real-time monitoring of tire pressure, temperature and vibration data;

[0021] Step III): Transmitting the sensor data to the central processing unit of the vehicle via wireless communication;

[0022] Step IV): The central processing unit analyzes and processes the data in real time and provides tire status information to the driver.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, the valve and the sensor can be stably connected and fixed together by the provided locking bolt, and the air intake direction and the air hole size of the original valve inside the tire will not be changed. When the tire needs to be rescued by a leak-proof agent in the later stage, the leak-proof agent filling pipe can be directly inserted into the tire for filling, which is more convenient;

[0025] 2. In the present invention, the reliability of data and the robustness of the system are improved through the integrated module, multi-sensor fusion and redundant design, and the anti-interference design and differential signal transmission method effectively reduce the impact of environmental interference on the data;

[0026] 3. In the present invention, the valve and the locking bolt are arranged in an integrated sliding segmented manner, so that the valve can be replaced separately after aging, which effectively reduces the cost of later maintenance and improves the convenience of later maintenance in actual application; BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the position of the through hole of the present invention;

[0029] Figure 3 It is a schematic diagram of the valve structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the locking bolt structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the installation position structure of the integrated module of the present invention.

[0032] In the figure: 1. Sensor housing;

[0033] 2. Valve; 21. Valve body; 22. Internal connecting rod; 23. Internal thread;

[0034] 3. Locking bolt; 31. Round block; 32. Integrated column; 33. External thread; 34. Hollow cavity; 35. Hexagonal groove;

[0035] 4. Pressure test hole; 5. Connection block; 6. Through hole; 7. Rubber pad; 8. Micro blind hole; 9. Power supply; 10. Integrated module. DETAILED DESCRIPTION

[0036] See also Figure 1-5 , the present invention provides a technical solution:

[0037] A multi-parameter composite sensor based on a tire pressure monitoring system and a method of using the same include a sensor housing 1, a connecting block 5 and a power supply 9. A connecting block 5 is welded and fixed at one end of the sensor housing 1. A through hole 6 is provided inside the connecting block 5. A valve 2 is installed inside the through hole 6. A locking bolt 3 is installed on one side of the valve 2. The valve 2 includes a valve body 21. An internal connecting rod 22 connected to the valve body 21 is welded and fixedly connected at one end of the valve body 21. An internal thread 23 is provided on the inner side of an end of the internal connecting rod 22 away from the valve body 21. The locking bolt 3 includes a round block 31. One side of the round block 31 is fixedly connected with An integrated column 32 is provided with an external thread 33 on the outer side of the integrated column 32, a hollow cavity 34 is provided inside the integrated column 32, and a hexagonal groove 35 connected to the hollow cavity 34 is provided inside the round block 31; a power supply 9 and an integrated module 10 are installed on the inner side of the other end of the sensor housing 1, and the integrated module 10 includes a pressure sensor for measuring the internal pressure of the tire, a temperature sensor for detecting the internal temperature of the tire, an acceleration sensor for monitoring the vibration of the tire, a multi-sensor fusion module and a wireless transmission module. The multi-sensor fusion module provides a redundant design by fusing the output data of the pressure sensor, the temperature sensor and the speed sensor.

[0038] As a technical solution for further implementation of this solution, the multi-sensor fusion module uses the following algorithm formula to process and fuse sensor data:

[0039] V fused =w p ·V P +w t ·V t +w a ·V a

[0040] Among them, V fused Represents the output value after fusion, V P 、V t and V a Respectively represent the output values ​​of the pressure sensor, temperature sensor and acceleration sensor, w p 、w t and w a is the weighting coefficient of each sensor data, satisfying w p +w t +w a =1, to ensure the weighted average of data. The wireless transmission module transmits data through differential signal transmission. The wireless transmission module contains a built-in digital signal processor. The digital signal processor uses adaptive filtering algorithm and environmental compensation algorithm to adjust and correct data in real time. Through multi-sensor fusion and redundant design, the reliability of data and the robustness of the system are improved. The anti-interference design and differential signal transmission method effectively reduce the impact of environmental interference on data.

[0041] As a further technical solution of the present invention, the internal connecting rod 22 and the integrated column 32 have the same axis, and the connecting rod 22 and the integrated column 32 are spirally connected by an internal thread 23 and an external thread 33. The integrated column 32 is arranged at one end of the internal connecting rod 22 and has an arc-shaped inner edge. Through the above arrangement, the stability of the connection between the valve 2 and the locking bolt 3 can be further improved during the assembly process.

[0042] As a further technical solution of the present invention, the round block 31 is in close contact with the connecting block 5, the angle between the round block 31 and the integral column 32 is 90°, the round block 31 is in close contact with the connecting block 5, and the inner wall of the hollow cavity 34 is a smooth surface. Through the above arrangement, it can be ensured that the valve 2 can be stably installed inside the connecting block 5;

[0043] As a technical solution further implemented in this scheme, a rubber pad 7 is fixedly connected to the edge of one end of the sensor housing 1, and a micro blind hole 8 is opened inside the rubber pad 7. The rubber pad 7 is arranged in an annular shape, and the thickness of the rubber pad 7 is twice the depth of the micro blind hole 8. There are a plurality of micro blind holes 8, and the vertical section of the micro blind hole 8 is a trapezoid. Through the above arrangement, the stability of the connection between the sensor as a whole and the automobile wheel hub can be effectively improved;

[0044] As a technical solution for further implementation of this scheme, a pressure test hole 4 is opened inside one end of the sensor housing 1, and the sensor housing 1 is made of electromagnetic shielding material to reduce the influence of external electromagnetic interference on sensor data;

[0045] The method comprises the following steps: Step I: installing the sensor inside the tire;

[0046] During the installation process, first connect the valve stem 2 and the sensor housing 1 through the locking bolt 3. After the connection is completed, in the actual assembly process, connect the valve stem 2 to the wheel hub to complete the assembly. During the assembly, it should be noted that the sensor housing 1 is tightly attached to the inner wall of the wheel hub through the rubber pad 7;

[0047] Step II: Real-time monitoring of tire pressure, temperature and vibration data;

[0048] Step III: Transmitting sensor data to the vehicle's central processing unit via wireless communication;

[0049] Step IV: The central processing unit analyzes and processes the data in real time and provides tire status information to the driver.

[0050] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the methods and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A multi-parameter composite sensor based on a tire pressure monitoring system, comprising a sensor housing (1), a connection block (5) and a power supply (9), characterized in that: A connection block (5) is welded and fixed to one end of the sensor housing (1), a through hole (6) is provided inside the connection block (5), a valve (2) is installed inside the through hole (6), and a locking bolt (3) is installed on one side of the valve (2); The valve (2) comprises a valve body (21), one end of which is welded and fixedly connected to an internal connecting rod (22) in communication with the valve body (21), and an inner side of an end of the internal connecting rod (22) away from the valve body (21) is provided with an internal thread (23), the locking bolt (3) comprises a round block (31), one side of the round block (31) is fixedly connected to an integral column (32), an outer side of the integral column (32) is provided with an external thread (33), a hollow cavity (34) is provided inside the integral column (32), and a hexagonal groove (35) in communication with the hollow cavity (34) is provided inside the round block (31); A power source (9) and an integrated module (10) are installed on the inner side of the other end of the sensor housing (1); the integrated module (10) includes a pressure sensor for measuring the internal pressure of the tire, a temperature sensor for detecting the internal temperature of the tire, an acceleration sensor for monitoring the vibration of the tire, a multi-sensor fusion module and a wireless transmission module; the multi-sensor fusion module provides a redundant design by fusing the output data of the pressure sensor, the temperature sensor and the speed sensor.

2. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 1, characterized in that: The multi-sensor fusion module uses the following algorithm formula to process and fuse sensor data: V fused =w p ·V P +w t ·V t +w a ·V a Among them, V fused Represents the output value after fusion, V P 、V t and V a Respectively represent the output values ​​of the pressure sensor, temperature sensor and acceleration sensor, w p 、w t and w a is the weighting coefficient of each sensor data, satisfying w p +w t +w a =1 to ensure the weighted average of the data.

3. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 1, characterized in that: The wireless transmission module transmits via a differential signal transmission mode, and the wireless transmission module includes a built-in digital signal processor.

4. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 3, characterized in that: The digital signal processor applies an adaptive filtering algorithm and an environmental compensation algorithm to adjust and correct data in real time.

5. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 1, characterized in that: The internal connecting rod (22) and the integrated column (32) share the same axis. The connecting rod (22) and the integrated column (32) are spirally connected via an internal thread (23) and an external thread (33). The integrated column (32) is arranged on an inner side edge of one end of the internal connecting rod (22) and is arc-shaped.

6. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 1, characterized in that: The round block (31) and the connecting block (5) are in close contact with each other, the angle between the round block (31) and the integral column (32) is 90°, the round block (31) and the connecting block (5) are in close contact with each other, and the inner wall of the hollow cavity (34) is a smooth surface.

7. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 1, characterized in that: A rubber pad (7) is fixedly connected to the edge of one end of the sensor housing (1), and a micro blind hole (8) is provided inside the rubber pad (7).

8. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 7, characterized in that: The rubber pad (7) is arranged in an annular shape, the thickness of the rubber pad (7) is twice the depth of the micro blind hole (8), a plurality of micro blind holes (8) are provided, and the vertical section of the micro blind hole (8) is trapezoidal.

9. The multi-parameter composite sensor based on the tire pressure monitoring system according to claim 1, characterized in that: A pressure test hole (4) is provided on the inner side of one end of the sensor housing (1), and the sensor housing (1) is made of electromagnetic shielding material.

10. The method for using the multi-parameter composite sensor based on the tire pressure monitoring system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step Ⅰ): Install the sensor inside the tire; During the installation process, the valve stem (2) and the sensor housing (1) are first connected by means of the locking bolt (3). After the connection is completed, during the actual assembly process, the valve stem (2) is connected to the wheel hub to complete the assembly. During the assembly, it should be noted that: the sensor housing (1) is tightly attached to the inner wall of the wheel hub through the rubber pad (7); Step II): Real-time monitoring of tire pressure, temperature and vibration data; Step III): Transmitting the sensor data to the central processing unit of the vehicle via wireless communication; Step IV): The central processing unit analyzes and processes the data in real time and provides tire status information to the driver.

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