Tire pressure monitoring integrated device

Abstract

The present invention discloses an integrated tire pressure monitoring device suitable for a monorail bogie, comprising: a three-way module having a first air pressure output port, a second air pressure output port, and an air pressure input port, the air pressure input port being used to connect to a tire pressure device to be tested; a pressure gauge, the input end of the pressure gauge being connected to the first air pressure output port, the detection signal of the pressure gauge being transmitted via a line to a signal transmission device, the signal transmission device being used to send the pressure signal to a display device; and a pressure sensor, the input end of the pressure sensor being connected to the second air pressure output port, the detection signal of the pressure sensor being wirelessly transmitted to the signal transmission device. The integrated tire pressure monitoring device provided by the present invention integrates two signal detection and transmission methods: wired monitoring and wireless monitoring. This can avoid the problem of abnormal tire pressure information not being able to be transmitted in a timely manner due to cable damage in a wired tire pressure detection device, and can also compensate for the problem of inaccurate detection by a wireless tire pressure sensor, thereby improving the reliability of the tire pressure detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of tire pressure, and in particular to an integrated tire pressure monitoring device. Background Art

[0002] At present, the straddle-type monorail vehicles of the urban rail transit system are very different from the common subway and light rail steel-wheeled vehicles in structure and appearance. Its vehicles run astride the track beams, and the running wheels of the bogies are replaced by pneumatic rubber tires instead of the steel wheels of traditional rail vehicles. The running wheel device of the monorail vehicle is a double-tire design.

[0003] To ensure safety, each running wheel unit is equipped with a tire pressure monitoring device at the end. The air pressure of the running tire is transmitted to a pressure gauge (with a built-in pressure switch with electrical contacts) through an air pressure tube. The circuits of the pressure switches are connected in parallel and connected to a signal transmission device through a slip ring. The signal transmission device transmits the tire pressure signal to a display device installed on the vehicle body. When the tire pressure of the running tire is normal, the pressure switch in the pressure gauge is open, the connection line is disconnected, and the tire deflation is not displayed. When the tire pressure of the running tire is lower than the specified pressure (750kPa), the pressure switch is closed, the connection line is closed, and a tire puncture signal is immediately sent to the train's onboard controller host, prompting the driver to take appropriate emergency measures to prevent the fault from expanding and the occurrence of danger.

[0004] However, for tire pressure monitoring devices connected by wires, poor wire contact or wire damage is inevitable when the wheels rotate during vehicle driving. If these problems are not discovered in time, the abnormal tire pressure information cannot be transmitted to the display, posing a driving safety hazard.

[0005] Therefore, how to improve the reliability of tire pressure detection devices is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide a tire pressure monitoring integrated device to improve the reliability of the tire pressure detection device.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A tire pressure monitoring integrated device, comprising:

[0009] A three-way module having a first air pressure output port, a second air pressure output port, and an air pressure input port, wherein the air pressure input port is used to communicate with the tire pressure device to be measured;

[0010] The input end of the pressure gauge is connected to the first air pressure output port, and the detection signal of the pressure gauge is transmitted to the signal transmission device through the line, and the signal transmission device is used to send the pressure signal to the display device;

[0011] A pressure sensor, wherein the input end of the pressure sensor is connected to the second air pressure output port, and the detection signal of the pressure sensor is wirelessly transmitted to the signal transmission device.

[0012] Optionally, in the above-mentioned tire pressure monitoring integrated device, the three-way module is a three-way valve. When the three-way valve is in a first working state, the first air pressure output port, the second air pressure output port and the air pressure input port are connected to each other; when the three-way valve is in a second working state, the first air pressure output port is connected to the air pressure input port, and the second air pressure output port is cut off from the air pressure input port; when the three-way valve is in a third working state, the first air pressure output port is cut off from the air pressure input port, and the second air pressure output port is connected to the air pressure input port.

[0013] Optionally, in the above-mentioned tire pressure monitoring integrated device, the three-way valve is a manually controlled valve, and the control end of the three-way valve is arranged in the cab.

[0014] Optionally, in the above tire pressure monitoring integrated device, the pressure gauge, the pressure sensor and the three-way module are all fixed on a mounting bracket.

[0015] Optionally, in the above-mentioned tire pressure monitoring integrated device, the mounting bracket is fixed on the bracket base plate, and the mounting bracket has a mounting portion for mounting the pressure gauge, the pressure sensor and the three-way module, and a connecting portion fixed on the bracket base plate.

[0016] Optionally, in the above-mentioned tire pressure monitoring integrated device, the connecting portion and the mounting portion have an angle, so that an escape space for avoiding surrounding parts is formed between the mounting portion and the bracket bottom plate.

[0017] Optionally, in the above tire pressure monitoring integrated device, a first insulating pad is provided between the pressure sensor, the three-way module and the mounting bracket.

[0018] Optionally, in the above tire pressure monitoring integrated device, the pressure sensor, the three-way module and the mounting bracket are all fixed by a first fastener.

[0019] Optionally, in the above-mentioned tire pressure monitoring integrated device, the fitting surface between the first fastener and the mounting bracket, the fitting surface between the first fastener and the pressure sensor, and the fitting surface between the first fastener and the three-way module are all insulated and separated by a first insulating sleeve mounted on the first fastener.

[0020] Optionally, in the above-mentioned tire pressure monitoring integrated device, a second insulating pad is provided between the pressure gauge and the mounting bracket, and the output wire of the pressure gauge is arranged on a side of the second insulating pad facing away from the mounting bracket.

[0021] Optionally, in the above-mentioned tire pressure monitoring integrated device, the pressure gauge and the mounting bracket are fixed by a second fastener.

[0022] Optionally, in the above-mentioned tire pressure monitoring integrated device, the second fastener and the fitting surface of the mounting bracket are insulated and separated by a second insulating sleeve sleeve mounted on the second fastener.

[0023] Optionally, in the above-mentioned tire pressure monitoring integrated device, the pressure gauge transmits the detection signal to the signal transmission device through a slip ring, and the slip ring is installed on the bracket base plate.

[0024] Optionally, in the above-mentioned tire pressure monitoring integrated device, the pressure gauge, the pressure sensor and the three-way module form a group of detection modules, two groups of the detection modules are arranged on the mounting bracket, the pressure gauges of the two groups of the detection modules share one slip ring, and the slip ring is arranged between the two groups of the detection modules.

[0025] The tire pressure monitoring integrated device provided by the present invention connects the input end of the pressure gauge to the tire pressure device to be tested through a three-way module to detect the tire pressure of the tire pressure device to be tested, and is connected to the signal transmission device by a line. At the same time, the input end of the pressure sensor is connected to the tire pressure device to be tested through the three-way module, and the detection signal of the pressure sensor is sent to the train on-board controller host by wireless transmission. Therefore, the tire pressure monitoring integrated device provided by the present invention integrates a wired transmission pressure gauge and a wireless transmission pressure sensor to simultaneously perform tire pressure detection on the tire pressure device to be tested. It can avoid the problem of abnormal tire pressure information not being able to be transmitted in time due to damage to the cable of the wired transmission signal pressure gauge, and can also compensate for the problem of inaccurate detection of the wireless transmission signal pressure sensor, thereby improving the reliability of the tire pressure detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of a tire pressure monitoring integrated device disclosed in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of a pressure sensor fixing structure disclosed in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the fixing structure of the three-way module disclosed in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the installation and line connection of the first set of pressure gauges disclosed in an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of the installation and line connection of the second set of pressure gauges disclosed in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the connection between two sets of pressure gauges and slip ring circuits disclosed in an embodiment of the present invention.

[0033] Among them, 100 is the mounting bracket, 110 is the connecting part, and 120 is the bracket bottom plate;

[0034] 200 is the pressure gauge;

[0035] 300 is a pressure sensor;

[0036] 400 is a three-way module, 410 is a first air pressure output port, 420 is a second air pressure output port, and 430 is an air pressure input port;

[0037] 500 is a first insulating pad;

[0038] 600 is a first fastener, 610 is a first insulating sleeve;

[0039] 700 is a second insulating pad;

[0040] 800 is a second fastener, 810 is a second insulating sleeve;

[0041] 900 is a slip ring. DETAILED DESCRIPTION

[0042] The object of the present invention is to provide a tire pressure monitoring integrated device to improve the reliability of the tire pressure detection device.

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] like Figure 1As shown, an embodiment of the present invention discloses a tire pressure monitoring integrated device, including a mounting bracket 100 , a pressure gauge 200 , a pressure sensor 300 and a three-way module 400 .

[0045] Among them, the three-way module 400 has a first air pressure output port 410, a second air pressure output port 420 and an air pressure input port 430, and the air pressure input port 430 is connected to the tire pressure equipment to be tested. In this embodiment, the connection between the air pressure input port 430 and the valve hose of the running tire of a monorail vehicle is taken as an example. In order to ensure the stability of the connection between the valve hose and the three-way module 400, the connection can be fixed with an R-type pipe clamp.

[0046] The input end of the pressure gauge 200 is connected to the first air pressure output port 410 of the three-way module 400. During installation, the pressure gauge 200 must be properly sealed and leak-free to ensure accurate measurements. An internal energized contact switch is installed within the pressure gauge 200. When the tire pressure of the monorail vehicle's running tires remains at the specified value, the energized contact switch within the pressure gauge 200 is in the open state. However, when the tire pressure falls below the specified value, the energized contact switch becomes closed, and the signal at this time is transmitted via a line to the train network monitoring host. When the system detects that the tire pressure value is below the set threshold, it sends an alarm to the train's onboard controller host to remind the driver to promptly check the tire pressure risk.

[0047] Because monorail vehicles are long, they are typically equipped with signal transmission equipment. The main function of the signal transmission equipment is to extend the signal transmission distance, enable longer-distance communication, and improve signal transmission efficiency. The signal transmission equipment transmits the low-pressure alarm information received from the pressure gauge 200 to a display device in the cab.

[0048] The pressure sensor 300 is a device or apparatus that senses pressure signals and converts them into a usable electrical output signal according to a specific pattern. It typically consists of a pressure-sensitive element and a signal processing unit. The input end of the pressure sensor 300 is connected to the second air pressure output port 420 of the three-way module 400, and the detection signal is wirelessly transmitted to a signal transmission device.

[0049] Therefore, the tire pressure monitoring integrated device provided by the present invention connects the input end of the pressure gauge 200 to the tire pressure device to be tested through the three-way module 400 to detect the tire pressure of the tire pressure device to be tested, and is connected to the signal transmission device by a line. At the same time, the input end of the pressure sensor 300 is connected to the tire pressure device to be tested through the three-way module 400, and the detection signal of the pressure sensor 300 is transmitted to the signal transmission device by wireless transmission. Therefore, the tire pressure monitoring integrated device provided by the present invention integrates the wired transmission pressure gauge 200 and the wireless transmission pressure sensor 300 to simultaneously perform tire pressure detection on the tire pressure device to be tested. It can avoid the problem of abnormal tire pressure information not being able to be transmitted in time due to damage to the cable of the wired transmission signal pressure gauge 200, and can also make up for the problem of inaccurate detection of the wireless transmission signal pressure sensor 300, thereby improving the reliability of the tire pressure detection device.

[0050] To facilitate maintenance of the integrated tire pressure monitoring device provided by the present invention, the three-way module 400 is configured as a three-way valve and has three operating states. In the first operating state, the first air pressure output port 410, the second air pressure output port 420, and the air pressure input port 430 of the three-way valve are interconnected. In this state, the pressure gauge 200 and the pressure sensor 300 simultaneously detect the tire pressure of the running tire. In the second operating state, the first air pressure output port 410 of the three-way valve is connected to the air pressure input port 430, and the second air pressure output port 420 is disconnected from the air pressure input port 430. In this state, the pressure gauge 200 normally detects tire pressure, and the pressure sensor 300 stops detecting tire pressure. The pressure sensor 300 can be disassembled for replacement or repair. In the third working state, the first air pressure output port 410 of the three-way valve is cut off from the air pressure input port 430, and the second air pressure output port 420 is connected to the air pressure input port 430. At this time, the pressure gauge 200 stops detecting tire pressure, and the pressure sensor 300 is in normal detection working state. The pressure gauge 200 can be disassembled for replacement or repair.

[0051] In addition, in order to facilitate the controllable selection of the three working conditions of the three-way valve, the three-way valve is a manually controlled valve, and the control end of the three-way valve is installed in the cab, so that the staff can switch the working state of the three-way valve according to actual needs. The control end of the three-way valve can be a commonly used control lever. For example, when the control lever is toggled to the left, the three-way valve is in the second working state, the first air pressure output port 410 of the three-way valve is connected to the air pressure input port 430, and the second air pressure output port 420 is cut off from the air pressure input port 430; when the control lever is toggled to the right, the three-way valve is in the third working state, the first air pressure output port 410 of the three-way valve is cut off from the air pressure input port 430, and the second air pressure output port 420 is connected to the air pressure input port 430; when the control lever is toggled to the middle, the three-way valve is in the first working state, the first air pressure output port 410, the second air pressure output port 420 and the air pressure input port 430 of the three-way valve are all connected to each other.

[0052] like Figure 1 As shown, the pressure gauge 200, the pressure sensor 300 and the three-way module 400 are all fixed on the mounting bracket 100, so that it is convenient for the staff to uniformly inspect and maintain the various working units of the tire pressure monitoring integrated device provided by the present invention, thereby reducing the maintenance workload and improving the efficiency of the maintenance work. That is, by disassembling and assembling the mounting bracket 100, the entire tire pressure monitoring integrated device can be disassembled and assembled.

[0053] In a specific embodiment, the mounting bracket 100 is provided with a mounting portion for mounting the pressure gauge 200, the pressure sensor 300 and the three-way module 400, and the mounting bracket 100 is fixed to the bracket base plate 120 by welding through the connecting portion 110, or other fixing methods commonly used by technicians in this field are not further limited here.

[0054] To prevent interference with components on the bracket base plate 120, the connecting portion 110 and the mounting portion of the mounting bracket 100 are angled. After the connecting portion 110 is welded to the bracket base plate 120, the supporting effect of the connecting portion 110 creates a clearance space between the mounting portion and the bracket base plate 120 to avoid surrounding components. This design also creates a stacked structure, preventing the mounting bracket 100 from occupying additional space on the monorail vehicle underframe when deployed horizontally, resulting in a compact mechanical structure and high space utilization.

[0055] Because the pressure sensor 300 contains a complex internal circuit system, a first insulating pad 500 is installed between the pressure sensor 300, the three-way module 400, and the mounting bracket 100 to prevent damage to the monorail vehicle transmission line from transmitting electricity to the pressure sensor 300 through the mounting bracket 100 or the three-way module 400 connected to the mounting bracket 100, thereby damaging the internal circuit system of the pressure sensor 300. Furthermore, the first insulating pad 500 also acts as a vibration dampener, reducing the impact of vehicle body vibration on the internal components of the pressure sensor 300 and the three-way module 400 during driving.

[0056] like Figure 2 and Figure 3 As shown, the pressure sensor 300 and the three-way module 400 are secured to the mounting bracket 100 via a first fastener 600, facilitating their removal. The first fastener 600 can be a bolt, combined with a flat washer and a spring washer, to prevent loosening of the bolts due to vehicle vibration, preventing a secure tightening. Alternatively, other fasteners commonly used by those skilled in the art may be used, and are not specifically limited herein.

[0057] Similarly, in order to prevent leakage of electricity from being conducted to the pressure sensor 300 through the first fastener 600 after the transmission line is damaged, the fitting surfaces between the first fastener 600 and the mounting bracket 100, the fitting surfaces between the first fastener 600 and the pressure sensor 300, and the fitting surfaces between the first fastener 600 and the three-way module 400 are all insulated and separated by a first insulating sleeve 610 mounted on the first fastener 600.

[0058] like Figure 4 and Figure 5 As shown, the pressure gauge 200 needs to be installed with a wire. In order to prevent the electricity at the wiring point from being conducted to the mounting bracket 100, a second insulating pad 700 is provided between the pressure gauge 200 and the mounting bracket 100, and the output wire of the pressure gauge 200 is arranged on the side of the second insulating pad 700 facing away from the mounting bracket 100.

[0059] The pressure gauge 200 is mounted to the mounting bracket 100 using a second fastener 800. The second fastener 800 can be a bolt in conjunction with a flat washer and spring washer. This prevents the bolt from loosening and becoming unstable due to vehicle vibration. Furthermore, to prevent current from the pressure gauge 200 from being conducted to the mounting bracket 100 through the second fastener 800, a second insulating sleeve 810 is provided on the second fastener 800 to isolate the contact surface between the second fastener 800 and the mounting bracket 100.

[0060] like Figure 6 As shown, in another specific embodiment, a slip ring 900 is provided on the bracket base plate 120. The slip ring 900 mainly consists of two major parts: a rotor and a stator. It is an electrical connector capable of transmitting signals while rotating, preventing the signal transmission lines from twisting and entanglement. Therefore, the circuits of the tire pressure monitoring integrated device provided by the present invention are prevented from twisting and entanglement. Therefore, the line of the pressure gauge 200 is connected to the slip ring 900, and the line of the slip ring 900 is then connected to the transmission equipment to complete the signal transmission.

[0061] The monorail vehicle has two parallel groups of running wheels. Therefore, the mounting bracket 100 is provided with two groups of detection modules consisting of pressure gauges 200, pressure sensors 300 and three-way modules. The two groups of detection modules share a slip ring 900. The circuit connection between the two groups of detection modules and the slip ring 900 is as follows: Figure 6As shown, the positive poles of the two sets of pressure gauges 200 are respectively connected to the two input positive poles of the slip ring 900 through lines, and the two input positive poles of the slip ring 900 are conducted to the output positive pole of the slip ring 900 through internal lines, while the negative poles of the two sets of pressure gauges 200 are connected in series through lines, and the input negative pole of the slip ring 900 is connected to the negative pole of one set of pressure gauges 200, and then the input negative pole of the slip ring 900 is connected to the output negative pole of the slip ring 900 through internal lines. Finally, the output positive pole and the output negative pole of the slip ring 900 are connected to the signal transmission device through lines, so that the parallel connection of the two sets of detection module lines realizes the separate detection of the tire pressures of the two sets of running tires.

[0062] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0063] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0064] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0065] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0066] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A tire pressure monitoring integrated device, characterized in that: include: A three-way module (400) having a first air pressure output port (410), a second air pressure output port (420), and an air pressure input port (430), wherein the air pressure input port (430) is used to communicate with a tire pressure device to be measured; a pressure gauge (200), wherein an input end of the pressure gauge (200) is in communication with the first air pressure output port (410), a detection signal of the pressure gauge (200) is transmitted to a signal transmission device via a line, and the signal transmission device is used to send the pressure signal to a display device; a pressure sensor (300), wherein the input end of the pressure sensor (300) is in communication with the second air pressure output port (420), and the detection signal of the pressure sensor (300) is wirelessly transmitted to the signal transmission device; The three-way module (400) is a three-way valve. When the three-way valve is in a first working state, the first air pressure output port (410), the second air pressure output port (420) and the air pressure input port (430) are interconnected; when the three-way valve is in a second working state, the first air pressure output port (410) is connected to the air pressure input port (430), and the second air pressure output port (420) is cut off from the air pressure input port (430); when the three-way valve is in a third working state, the first air pressure output port (410) is cut off from the air pressure input port (430), and the second air pressure output port (420) is connected to the air pressure input port (430).

2. The tire pressure monitoring integrated device according to claim 1, characterized in that: The three-way valve is a manual control valve, and the control end of the three-way valve is arranged in the cab.

3. The tire pressure monitoring integrated device according to claim 1, characterized in that: The pressure gauge (200), the pressure sensor (300), and the three-way module (400) are all fixed on the mounting bracket (100).

4. The tire pressure monitoring integrated device according to claim 3, characterized in that: The mounting bracket (100) is fixed on a bracket base plate (120), and the mounting bracket (100) comprises a mounting portion for mounting the pressure gauge (200), the pressure sensor (300), and the three-way module (400), and a connecting portion (110) fixed on the bracket base plate (120).

5. The tire pressure monitoring integrated device according to claim 4, characterized in that: The connecting portion (110) and the mounting portion have an included angle, so that an escape space for evading surrounding parts is formed between the mounting portion and the bracket bottom plate (120).

6. The tire pressure monitoring integrated device according to claim 3, characterized in that: A first insulating pad (500) is provided between the pressure sensor (300), the three-way module (400), and the mounting bracket (100).

7. The tire pressure monitoring integrated device according to claim 6, characterized in that: The pressure sensor (300), the three-way module (400), and the mounting bracket (100) are all fixed via a first fastener (600).

8. The tire pressure monitoring integrated device according to claim 7, characterized in that: The fitting surfaces of the first fastener (600) and the mounting bracket (100), the fitting surfaces of the first fastener (600) and the pressure sensor (300), and the fitting surfaces of the first fastener (600) and the three-way module (400) are all insulated and separated by a first insulating sleeve (610) sleeved on the first fastener (600).

9. The tire pressure monitoring integrated device according to claim 4, characterized in that: A second insulating pad (700) is provided between the pressure gauge (200) and the mounting bracket (100), and an output wire of the pressure gauge (200) is provided on a side of the second insulating pad (700) facing away from the mounting bracket (100).

10. The tire pressure monitoring integrated device according to claim 9, characterized in that: The pressure gauge (200) and the mounting bracket (100) are fixed via a second fastener (800).

11. The tire pressure monitoring integrated device according to claim 10, characterized in that: The fitting surfaces of the second fastener (800) and the mounting bracket (100) are insulated and separated by a second insulating sleeve (810) sleeved on the second fastener (800).

12. The tire pressure monitoring integrated device according to claim 9, characterized in that: The pressure gauge (200) transmits the detection signal to the signal transmission device via a slip ring (900), and the slip ring (900) is mounted on the bracket base plate (120).

13. The tire pressure monitoring integrated device according to claim 12, characterized in that: The pressure gauge (200), the pressure sensor (300) and the three-way module (400) form a group of detection modules. Two groups of the detection modules are arranged on the mounting bracket (100). The pressure gauges (200) of the two groups of detection modules share one slip ring (900), and the slip ring (900) is arranged between the two groups of detection modules.

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