A vehicle air brake monitoring system, monitoring method and vehicle

Abstract

The application discloses a vehicle air pressure brake monitoring system, a monitoring method and a vehicle, and relates to the technical field of vehicle monitoring systems.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of vehicle air pressure brake monitoring systems, belong to dump truck technical field. BACKGROUND

[0002] The reliability of brake system accounts for a large proportion in vehicle safety.At present, in the field of dump truck, due to overloading, frequent braking and poor vehicle working condition, brake components are prone to function degradation and damage, resulting in brake force not meeting the demand, which seriously affects the safety of the vehicle. And the function degradation of brake components is not easy to detect, so the fault problem is not easy to troubleshoot, causing the fault cannot be eliminated in time, which poses a potential risk to the safety of the driver's life and property. SUMMARY

[0003] The present application provides a kind of vehicle air pressure brake monitoring system to solve the above problems, which can monitor whether each brake component is damaged or functionally degraded in real time by installing various sensors on each brake component, to remind the driver to eliminate the fault in time and improve the driving safety.

[0004] The present application is implemented according to the following technical scheme:

[0005] The present application discloses a kind of vehicle air pressure brake monitoring systems, including gas storage monitoring unit, control monitoring unit and execution monitoring unit;The gas storage monitoring unit, control monitoring unit and execution monitoring unit are connected, whether the monitoring value of various sensors is in the set range and whether the acquisition value of each sensor is synchronized under different braking states can be judged in time whether each brake component is faulty, and the fault phenomenon is transmitted to the driver in time to eliminate the fault in time.

[0006] In some embodiments, the gas storage monitoring unit includes an electric air compressor, a condenser, a temperature sensor, a dryer, a humidity sensor, a four-way valve, a front axle driving gas cylinder, a middle and rear axle driving gas cylinder, a parking gas cylinder, an auxiliary gas cylinder, and an air pressure sensor. The condenser outlet is equipped with a temperature sensor for monitoring the temperature of compressed air. The dryer outlet is equipped with a humidity sensor for monitoring the humidity of compressed air. The front axle driving gas cylinder, the middle and rear axle driving gas cylinder, the parking gas cylinder, and the auxiliary gas cylinder are all equipped with air pressure sensors for monitoring the air pressure of each gas cylinder. The electric air compressor is connected to the condenser, the dryer, and the four-way valve in sequence through an air pipe. The four outlets of the four-way valve are connected to the inlets of the front axle driving gas cylinder, the middle and rear axle driving gas cylinder, the parking gas cylinder, and the auxiliary gas cylinder, respectively.

[0007] In some embodiments, the control monitoring unit comprises a hand brake valve, a hand brake displacement sensor, a foot brake valve, a foot brake displacement sensor, a front axle running fast release valve, a front axle parking fast release valve, a middle axle running follow-up valve, a middle axle parking follow-up valve, a rear axle running follow-up valve, a rear axle parking fast release valve, a one-way valve, a front middle rear axle brake chamber parking cavity, a front middle rear axle brake chamber running cavity, a chamber air pressure sensor, and an ABS valve; the hand brake valve is provided with a hand brake displacement sensor for monitoring the parking brake state; the foot brake valve is provided with a foot brake displacement sensor for monitoring the running brake state; the front middle rear axle brake chamber parking cavity and the front middle rear axle brake chamber running cavity are provided with chamber air pressure sensors for monitoring the air pressure of the brake chamber.

[0008] In some embodiments, the parking gas storage cylinder in the gas storage monitoring unit is connected to the middle axle parking follow-up valve air inlet, the middle axle brake chamber parking cavity through a gas pipe in one way, and connected to the one-way valve, the hand brake valve and the middle axle parking follow-up valve signal port in one way, and the middle axle parking follow-up valve outlet is connected to the front and rear axle parking fast release valves and then connected to the front and rear axle brake chamber parking cavities.

[0009] In some embodiments, the front axle running gas storage cylinder in the gas storage monitoring unit is connected to the foot brake valve, the front axle running fast release valve, the ABS valve and the front axle brake chamber running cavity through a gas pipe in one way.

[0010] In some embodiments, the middle and rear axle running gas storage cylinder in the gas storage monitoring unit is connected to the middle and rear axle running follow-up valve air inlet, the ABS valve and the middle and rear axle brake chamber running cavity through a gas pipe in one way, and connected to the foot brake valve and the middle and rear axle running follow-up valve signal port in one way.

[0011] In some embodiments, the execution monitoring unit comprises front middle and rear axle brakes, wheel speed sensors, brake temperature sensors, a brake processing unit and a cab instrument; the front middle and rear axle are each provided with a wheel speed sensor for monitoring the real-time speed of each wheel edge; the front middle and rear axle brakes are each provided with a brake temperature sensor for monitoring the temperature of each brake.

[0012] In some embodiments, the electric air compressor, temperature sensor, humidity sensor, air pressure sensor in the gas storage monitoring unit, the hand brake displacement sensor, foot brake displacement sensor, chamber air pressure sensor, ABS valve in the control monitoring unit, and the wheel speed sensor and brake temperature sensor in the execution monitoring unit are electrically connected to the brake processing unit, and the brake processing unit is electrically connected to the cab instrument.

[0013] The application discloses a monitoring method based on the vehicle air pressure brake monitoring system.

[0014] When the air pressure of the air pressure sensor is lower than the preset value, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the electric air compressor failure.

[0015] When the temperature of the temperature sensor exceeds the preset range, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the condenser failure.

[0016] When the humidity of the humidity sensor exceeds the preset value, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the dryer failure.

[0017] When the air pressure of the air pressure sensor is higher than the preset value, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the four-way valve failure.

[0018] When the continuous working time of the electric air compressor exceeds the preset value, but the pressure of each air reservoir still does not reach the preset value, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the corresponding air reservoir failure.

[0019] When the hand brake valve changes to the parking brake application state, the air chamber pressure sensor of the front, middle and rear axle brake air chamber parking cavity should decrease at a speed greater than the preset value and the final air pressure should be lower than the preset value. When the hand brake valve changes to the parking brake release state, the air chamber pressure sensor of the front, middle and rear axle brake air chamber parking cavity should increase at a speed greater than the preset value and the final air pressure should be higher than the preset value. Otherwise, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the corresponding parking brake element failure.

[0020] When the foot brake valve is in different driving brake application states, the air chamber pressure sensor of the front, middle and rear axle brake air chamber driving cavity should be in different preset ranges, and the air pressure change speed should be consistent with the foot brake displacement sensor change speed. Otherwise, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the corresponding driving brake element failure.

[0021] When the air chamber pressure sensor of the front, middle and rear axle brake air chamber driving cavity increases, the wheel speed sensor monitored wheel rim speed should decrease at a speed corresponding to the air pressure value. Otherwise, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the corresponding front, middle and rear axle brake failure.

[0022] When the brake temperature sensor temperature exceeds the preset range, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the corresponding front, middle and rear axle brake failure.

[0023] The wheel speed sensor monitored wheel rim speed should decrease to zero at the same time. Otherwise, the brake processing unit generates a corresponding fault code and sends it to the cab instrument to remind the driver of the corresponding ABS valve failure.

[0024] The application discloses a vehicle provided with the vehicle air brake monitoring system.

[0025] The application has the following beneficial effects:

[0026] By installing various sensors in the air brake circuit, whether the functions of the brake elements are degraded or damaged can be found in time, the driver is reminded to remove the fault in time, and thus the driving safety of the whole vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are part of the present application, serve to further understand the present application, and the schematic embodiments of the present application and the descriptions thereof are used to explain the present application but do not constitute undue limitations on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0028] In the drawings:

[0029] Figure 1 The vehicle air brake monitoring system of the present application is shown in the schematic diagram;

[0030] The accompanying drawings are described as follows: the electric air compressor 1, the condenser 2, the temperature sensor 3, the dryer 4, the humidity sensor 5, the four-way valve 6, the front axle running air reservoir 7, the middle and rear axle running air reservoir 8, the parking air reservoir 9, the auxiliary air reservoir 10, the air pressure sensor 11, the hand brake valve 12, the hand brake displacement sensor 13, the foot brake valve 14, the foot brake displacement sensor 15, the front axle running quick release valve 16, the front axle parking quick release valve 17, the middle axle running relay valve 18, the middle axle parking relay valve 19, the rear axle running relay valve 20, the rear axle parking quick release valve 21, the one-way valve 22, the front, middle and rear axle brake chamber parking cavities 23, 24, 25, 26, 27, 28, the front, middle and rear axle brake chamber running cavities 29, 30, 31, 32, 33, 34, the chamber air pressure sensor 35, the ABS valve 36, the front, middle and rear axle brakes 37, 38, 39, 40, 41, 42, the wheel speed sensor 43, the brake temperature sensor 44, the brake processing unit 45, and the cab instrument 46.

[0031] It should be noted that the drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. EMBODIMENT

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be clearly and completely described below by referring to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but not to limit the scope of the present application.

[0033] In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mounting", "connection", "linking" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] As shown in Figure 1 A vehicle air brake monitoring system, comprising an air storage monitoring unit, a control monitoring unit, an execution monitoring unit; after the air storage monitoring unit, the control monitoring unit and the execution monitoring unit are connected, whether the monitoring values of various sensors are in the set range and whether the values collected by various sensors under different braking states are synchronized can be used to determine whether each braking element is faulty in time, and the fault phenomenon is transmitted to the driver in time to eliminate the fault in time.

[0035] Continuing to refer to Figure 1 The air storage monitoring unit includes an electric air compressor 1, a condenser 2, a temperature sensor 3, a dryer 4, a humidity sensor 5, a four-way valve 6, a front axle running air cylinder 7, a middle and rear axle running air cylinder 8, a parking air cylinder 9, an auxiliary air cylinder 10, an air pressure sensor 11, the control monitoring unit includes a hand brake valve 12, a hand brake displacement sensor 13, a foot brake valve 14, a foot brake displacement sensor 15, a front axle running quick release valve 16, a front axle parking quick release valve 17, a middle axle running relay valve 18, a middle axle parking relay valve 19, a rear axle running relay valve 20, a rear axle parking quick release valve 21, a one-way valve 22, front, middle and rear axle brake air chamber parking cavities 23, 24, 25, 26, 27, 28, front, middle and rear axle brake air chamber running cavities 29, 30, 31, 32, 33, 34, air chamber air pressure sensors 35, ABS valves 36, and the execution monitoring unit includes front, middle and rear axle brakes 37, 38, 39, 40, 41, 42, wheel speed sensors 43, brake temperature sensors 44, brake processing units 45, and cab instruments 46.

[0036] Further scheme: continuing to refer to Figure 1 As shown in The condenser 2 is provided with a temperature sensor 3 at the air outlet for monitoring the temperature of compressed air; the dryer 4 is provided with a humidity sensor 5 at the air outlet for monitoring the humidity of compressed air; the front axle running air cylinder 7, the middle and rear axle running air cylinder 8, the parking air cylinder 9 and the auxiliary air cylinder 10 are provided with air pressure sensors 11 at the air outlets for monitoring the air pressure of each air cylinder; the electric air compressor 1 is connected to the condenser 2, the dryer 4 and the four-way valve 6 in sequence through an air pipe; the four air outlets of the four-way valve 6 are connected to the air inlets of the front axle running air cylinder 7, the middle and rear axle running air cylinder 8, the parking air cylinder 9 and the auxiliary air cylinder 10 respectively.

[0037] Further scheme: continue to refer to Figure 1 As shown, the hand brake valve 12 is provided with a hand brake displacement sensor 13 for monitoring the parking brake state; the foot brake valve 14 is provided with a foot brake displacement sensor 15 for monitoring the service brake state; the air inlet of the front, middle and rear axle brake chamber parking cavities 23, 24, 25, 26, 27, 28 and the front, middle and rear axle brake chamber service cavities 29, 30, 31, 32, 33, 34 are provided with chamber air pressure sensors 35 for monitoring the air pressure of each brake chamber.

[0038] Further scheme: continue to refer to Figure 1 As shown, the parking reservoir 9 is connected to the middle axle parking relay valve 19 air inlet, the middle axle brake chamber parking cavities 25, 26 through the air pipe in one way, and is connected to the one-way valve 22, the hand brake valve 12 and the middle axle parking relay valve 19 signal port in one way, and the air outlet of the middle axle parking relay valve 22 is connected to the front and rear axle parking quick release valves 17, 21 and then connected to the front and rear axle brake chamber parking cavities 23, 24, 27, 28.

[0039] Further scheme: continue to refer to Figure 1 As shown, the front axle service reservoir 7 is connected to the foot brake valve 14, the front axle service quick release valve 16, the ABS valve 36 and the front axle brake chamber service cavities 29, 30 through the air pipe in one way.

[0040] Further scheme: continue to refer to Figure 1 As shown, the middle and rear axle service reservoir 8 is connected to the middle and rear axle service relay valves 18, 20 air inlet, the ABS valve 36, the middle and rear axle brake chamber service cavities 31, 32, 33, 34 through the air pipe in one way, and is connected to the foot brake valve 14, the middle and rear axle service relay valves 18, 20 signal port in one way.

[0041] Further scheme: continue to refer to Figure 1 As shown, the wheel speed sensor 43 is installed on each wheel edge of the front, middle and rear axles for monitoring the real-time speed of each wheel edge, and the brake temperature sensor 44 is installed on each brake 37, 38, 39, 40, 41, 42 for monitoring the temperature of each brake.

[0042] Further scheme: continue to refer to Figure 1 As shown, the electric air compressor 1, the temperature sensor 3, the humidity sensor 5, the air pressure sensor 11, the hand brake displacement sensor 13, the foot brake displacement sensor 15, the chamber air pressure sensor 35, the ABS valve 36, the wheel speed sensor 43, the brake temperature sensor 44 and the brake processing unit 45 are electrically connected, and the brake processing unit 45 and the cab instrument 46 are electrically connected.

[0043] The monitoring method of the vehicle air brake monitoring system is as follows:

[0044] With reference to the foregoing Figure 1 As shown, when the air pressure sensor 11 detects that the air pressure is lower than the preset value, the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the electric air compressor 1 is malfunctioning; when the temperature sensor 3 detects that the temperature is out of the preset range, the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the condenser 2 is malfunctioning; when the humidity sensor 5 detects that the humidity is out of the preset value, the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the dryer 4 is malfunctioning; when the air pressure sensor 11 detects that the air pressure is higher than the preset value, the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the four-way valve 6 is malfunctioning; when the electric air compressor 1 has been working for a time exceeding the preset value but the pressure of each air reservoir still does not reach the preset value, the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the corresponding air reservoir 7, 8, 9, 10 is malfunctioning.

[0045] With reference to the foregoing Figure 1 As shown, when the hand brake displacement sensor 13 detects that the hand brake valve 12 has changed to the parking brake application state, the air chamber air pressure sensor 35 of the front, middle and rear axle brake air chambers parking cavity 23, 24, 25, 26, 27, 28 should decrease at a speed greater than the preset value and the final air pressure should be lower than the preset value; when the hand brake displacement sensor 13 detects that the hand brake valve 12 has changed to the parking brake release state, the air chamber air pressure sensor 35 of the front, middle and rear axle brake air chambers parking cavity 23, 24, 25, 26, 27, 28 should increase at a speed greater than the preset value and the final air pressure should be higher than the preset value, otherwise the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the corresponding parking brake element 12, 17, 19, 21 is malfunctioning.

[0046] With reference to the foregoing Figure 1 As shown, when the foot brake displacement sensor 15 detects that the foot brake valve 14 is in different driving brake application states, the air chamber air pressure sensor 35 of the front, middle and rear axle brake air chambers driving cavity 29, 30, 31, 32, 33, 34 should be in different preset ranges, and the air pressure change speed should be consistent with the change speed of the foot brake displacement sensor 15, otherwise the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the corresponding driving brake element 14, 16, 18, 20 is malfunctioning.

[0047] With reference to the foregoing Figure 1 As shown, when the air chamber air pressure sensor 35 of the front, middle and rear axle brake air chambers driving cavity 29, 30, 31, 32, 33, 34 increases, the wheel speed sensor 43 should monitor the corresponding deceleration of the wheel speed, otherwise the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver that the corresponding front, middle and rear axle brake 37, 38, 39, 40, 41, 42 is malfunctioning.

[0048] With reference to the drawings Figure 1 As shown, when the temperature of the brake temperature sensor 44 is out of the preset range, the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver of the corresponding front, middle and rear axle brakes 37, 38, 39, 40, 41, 42 failure.

[0049] With reference to the drawings Figure 1 As shown, the wheel speed sensor 43 monitors the wheel edge speed, which should be reduced to zero at the same time, otherwise the brake processing unit 45 generates a corresponding fault code and sends it to the cab instrument 46 to remind the driver of the corresponding ABS valve 36 failure.

[0050] In summary, the application discloses a vehicle air pressure brake monitoring system, which comprises a gas storage monitoring unit, a control monitoring unit and an execution monitoring unit. Whether the monitoring values of various sensors are in the set range and whether the sensor values collected under different braking states are synchronized can be determined in time to determine whether each braking element is faulty, and the fault phenomenon is transmitted to the driver in time to eliminate the fault in time, thereby improving the reliability of the braking function.

[0051] In the description provided herein, a large number of specific details are explained. However, it can be understood that the embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of the present description.

[0052] In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features of different embodiments are also meant to be within the scope of the present application and form different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.

[0053] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content as equivalent embodiments without departing from the scope of the technical solutions of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A vehicle air pressure brake monitoring system, characterized in that: It includes a gas storage monitoring unit, a control monitoring unit, and an execution monitoring unit; After the gas storage monitoring unit, control monitoring unit and execution monitoring unit are connected, the monitoring values ​​of various sensors are within the set range and the values ​​collected by each sensor under different braking states are synchronized. This allows for timely judgment of whether each braking element is faulty and timely transmission of the fault phenomenon to the driver so that the fault can be eliminated in time. The air storage monitoring unit includes an electric air compressor (1), a condenser (2), a temperature sensor (3), a dryer (4), a humidity sensor (5), a four-way valve (6), a front axle traveling air tank (7), a middle and rear axle traveling air tank (8), a parking air tank (9), an auxiliary air tank (10), and a pressure sensor (11). The outlet of the condenser (2) is equipped with a temperature sensor (3) for monitoring the temperature of compressed air. The outlet of the dryer (4) is equipped with a humidity sensor (5) for monitoring the humidity of compressed air. The air outlets of the front axle traveling air tank (7), the middle and rear axle traveling air tank (8), the parking air tank (9), and the auxiliary air tank (10) are all equipped with air pressure sensors (11) for monitoring the air pressure of each air tank. The electric air compressor (1) is connected in sequence to the condenser (2), the dryer (4) and the four-way valve (6) via air pipes. The four outlets of the four-way valve (6) are respectively connected to the air inlets of the front axle traveling air tank (7), the middle and rear axle traveling air tank (8), the parking air tank (9), and the auxiliary air tank (10). The control and monitoring unit includes a handbrake valve (12), a handbrake displacement sensor (13), a foot brake valve (14), a foot brake displacement sensor (15), a front axle travel quick release valve (16), a front axle parking quick release valve (17), a middle axle travel relay valve (18), a middle axle parking relay valve (19), a rear axle travel relay valve (20), a rear axle parking quick release valve (21), a check valve (22), front, middle and rear axle brake chamber parking chambers (23, 24, 25, 26, 27, 28), front, middle and rear axle brake chamber travel chambers (29, 30, 31, 32, 33, 34), a chamber air pressure sensor (35), and an ABS valve (36). The handbrake valve (12) is equipped with a handbrake displacement sensor (13) for monitoring the parking brake status. The foot brake valve (14) is equipped with a foot brake displacement sensor (15) for monitoring the vehicle braking status. The air inlets of the parking chambers (23, 24, 25, 26, 27, 28) and the driving chambers (29, 30, 31, 32, 33, 34) of the front, middle and rear axle brake chambers are all equipped with chamber pressure sensors (35) for monitoring the air pressure of each brake chamber. The execution monitoring unit includes front, middle and rear axle brakes (37, 38, 39, 40, 41, 42), wheel speed sensor (43), brake temperature sensor (44), brake processing unit (45), and cab instrument (46). Each wheel of the front, middle and rear axles is equipped with a wheel speed sensor (43) for monitoring the real-time rotation speed of each wheel. The front, middle and rear axle brakes (37, 38, 39, 40, 41, 42) are all equipped with brake temperature sensors (44) for monitoring the temperature of each brake.

2. The vehicle air pressure brake monitoring system according to claim 1, characterized in that: The parking air tank (9) in the air storage monitoring unit is connected in sequence via an air pipe to the air inlet of the parking relay valve (19) of the middle axle and the parking chamber (25, 26) of the middle axle brake air chamber; and in sequence to the one-way valve (22), the handbrake valve (12) and the signal port of the parking relay valve (19) of the middle axle. The air outlet of the parking relay valve (19) of the middle axle is connected to the parking quick release valves (17, 21) of the front and rear axles respectively, and then connected to the parking chambers (23, 24, 27, 28) of the front and rear axles brake air chambers.

3. The vehicle air pressure brake monitoring system according to claim 1, characterized in that: The front axle traveling air tank (7) in the air storage monitoring unit is connected in sequence to the foot brake valve (14), the front axle traveling quick release valve (16), the ABS valve (36), and the front axle brake air chamber traveling cavity (29, 30) via air pipes.

4. The vehicle air pressure brake monitoring system according to claim 1, characterized in that: The air storage monitoring unit has a middle and rear axle travel air storage tank (8) connected in sequence via an air pipe to the air inlet of the middle and rear axle travel relay valve (18, 20), the ABS valve (36), and the travel chamber (31, 32, 33, 34) of the middle and rear axle brake air chamber, and in sequence to the foot brake valve (14) and the signal port of the middle and rear axle travel relay valve (18, 20).

5. A vehicle air pressure brake monitoring system according to claim 1, characterized in that: The electric air compressor (1), temperature sensor (3), humidity sensor (5), and air pressure sensor (11) in the air storage monitoring unit, as well as the handbrake displacement sensor (13), foot brake displacement sensor (15), air chamber air pressure sensor (35), ABS valve (36) in the control monitoring unit, and the wheel speed sensor (43) and brake temperature sensor (44) in the execution monitoring unit are electrically connected to the brake processing unit (45), and the brake processing unit (45) is electrically connected to the cab instrument (46).

6. A monitoring method based on the vehicle air pressure brake monitoring system according to claim 1, characterized in that: When the air pressure sensor (11) is lower than the preset value, the braking processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver that the electric air compressor (1) is faulty. When the temperature sensor (3) exceeds the preset range, the braking processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver that the condenser (2) is faulty; When the humidity sensor (5) exceeds the preset value, the braking processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver that the dryer (4) has malfunctioned. When the air pressure sensor (11) is higher than the preset value, the brake processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver that the four-way valve (6) is faulty. When the electric air compressor (1) continues to work for a longer period of time than the preset value, but the pressure of each air tank still does not reach the preset value, the braking processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver of the corresponding air tank (7, 8, 9, 10) fault. When the handbrake displacement sensor (13) detects that the handbrake valve (12) has changed to the parking brake application state, the air pressure sensor (35) of the air chamber parking chamber (23, 24, 25, 26, 27, 28) of the front, middle and rear axle brake chambers should decrease at a rate greater than the preset value and the final air pressure should be lower than the preset value; when the handbrake displacement sensor (13) detects that the handbrake valve (12) has changed to the parking brake release state, the air pressure sensor (35) of the air chamber parking chamber (23, 24, 25, 26, 27, 28) of the front, middle and rear axle brake chambers should increase at a rate greater than the preset value and the final air pressure should be higher than the preset value. Otherwise, the brake processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver of the corresponding parking brake component (12, 17, 19, 21) malfunction. When the foot brake displacement sensor (15) monitors the foot brake valve (14) in different service brake application states, the air pressure value of the air chamber air pressure sensor (35) of the front, middle and rear axle brake air chambers (29, 30, 31, 32, 33, 34) should be in different preset ranges, and the air pressure change rate should be consistent with the change rate of the foot brake displacement sensor (15). Otherwise, the brake processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver of the corresponding service brake component (14, 16, 18, 20) functional failure. When the air pressure of the air chambers (29, 30, 31, 32, 33, 34) of the front, middle and rear axle brake chambers increases, the deceleration of the wheel side rotation speed monitored by the wheel speed sensor (43) should correspond to the air pressure value. Otherwise, the brake processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver of the corresponding front, middle and rear axle brake (37, 38, 39, 40, 41, 42) fault. When the temperature of the brake temperature sensor (44) exceeds the preset range, the brake processing unit (45) generates a corresponding fault code and sends it to the cab instrument (46) to remind the driver of the corresponding front, middle and rear axle brake (37, 38, 39, 40, 41, 42) fault. The wheel speed monitored by the wheel speed sensor (43) should drop to zero at the same time; otherwise, the brake processing unit (45) will generate a corresponding fault code and send it to the cab instrument (46) to remind the driver of the corresponding ABS valve (36) malfunction.

7. A vehicle, characterized in that: The vehicle is equipped with the air pressure brake monitoring system as described in any one of claims 1 to 5.

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