Testing device for simulating low-temperature fault of axle temperature sensor of motor train unit

Abstract

The utility model discloses a testing device for simulating a low temperature fault of an axle temperature sensor of a motor train unit, which comprises a power box and a case, a mainboard is arranged in the case, a core a and a core b are arranged in the outer wall of the front end of the mainboard, and an interface a, an interface b, an interface c and an interface d are fixedly connected to the outer wall of the left end of the mainboard from top to bottom at equal intervals. An analyzer is arranged on the left side of the case, a computer is arranged on the lower side of the analyzer, a plurality of adjustable resistors are arranged in the case, and a plurality of connecting rods are arranged at the rear end of the case, so that lines are kept clean and tidy when not used, the corresponding lines are convenient to find for use, and meanwhile, when the testing device is used, the lines can be conveniently and rapidly used. The situation that time is wasted during line arrangement is avoided, meanwhile, multiple lines can be efficiently managed in a small space, the space utilization rate is increased, and the overall layout of equipment is optimized.

Description

Technical Field

[0001] This utility model belongs to the technical field of safety monitoring of rail transit vehicles, specifically relating to a test device for simulating a low temperature fault of axle temperature sensor in a high-speed train. Background Technology

[0002] The test device for simulating low temperature faults of axle temperature sensors in high-speed trains is mainly used to detect and analyze the potential low temperature problem of axle temperature sensors in actual operation of high-speed trains. Different temperature ranges can be set through the heating system to simulate normal and low temperature conditions. By dynamically adjusting the resistance value, the device simulates low temperature faults, enabling rapid verification of the on-board system's temperature rise rate alarm logic and temperature difference threshold, reducing reliance on on-site debugging.

[0003] However, the testing device requires a lot of wiring, and when carrying it, the multiple wires are prone to getting tangled together, which means that extra time needs to be spent tidying up the wiring when conducting fault tests. Utility Model Content

[0004] The purpose of this invention is to provide a test device for simulating a low temperature fault of axle temperature sensor in a high-speed train, in order to solve the problem that the test device mentioned in the background art requires a lot of wiring and that multiple wirings are prone to tangling when carried.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for simulating a low temperature fault of axle temperature sensor in a high-speed train, including a power supply box and a chassis;

[0006] The motherboard is installed inside the chassis;

[0007] The motherboard has core a and core b located inside the front outer wall.

[0008] The left outer wall of the motherboard is fixedly connected with interfaces a, b, c and d at equal intervals from top to bottom. An analyzer is installed on the left side of the chassis, and a computer is installed below the analyzer. Multiple adjustable resistors are installed inside the chassis.

[0009] The rear side of the chassis is provided with multiple connecting rods for the separation and winding of the wiring.

[0010] Preferably, the rear outer wall of the chassis is fixedly connected with multiple mounting plates at equal intervals to limit the position of the connecting rod, and each of the multiple mounting plates is provided with a fixing plate inside.

[0011] Preferably, each of the plurality of fixed plates is provided with a fixed shaft inside, and each of the plurality of connecting rods is fixedly connected with a handle on the outer wall of its front end, so that under the action of external force and under the restriction of the fixed shaft, the connecting rod can be driven to wind up the line.

[0012] Preferably, clamps are fixedly connected to the front outer walls of the plurality of fixing plates to hold one end of the line, and clamps are fixedly connected to the rear outer walls of the plurality of handles to hold the other end of the line after it is wound up.

[0013] Preferably, the front outer wall of the power supply box is provided with multiple power interfaces for connecting to the wiring to supply power to the electrical equipment, and the front outer wall of the power supply box is provided with two display screens a to display voltage and resistance.

[0014] Preferably, the chassis has an internal mounting bracket to separate and limit the positions of multiple adjustable resistors, and the left outer wall of the motherboard has a network port for connecting external network cables.

[0015] Preferably, a display screen b is embedded inside the outer wall of the front end of the analyzer to limit the analyzed values.

[0016] Preferably, the analyzer is connected to the network port, interface a, interface b, interface c and interface d by a communication line, and the chassis, analyzer and computer are connected by a communication line.

[0017] Compared with the prior art, this utility model provides a testing device for simulating a low temperature fault of the axle temperature sensor in a high-speed train, which has the following beneficial effects:

[0018] By installing multiple connecting rods at the rear of the chassis, multiple different wires can be wound around the connecting rods during the use of the testing device. This effectively reduces wire tangling and crossing, keeps the wires tidy when not in use, facilitates finding the corresponding wires for use, and avoids wasting time tidying up the wires when using the testing device. It also allows for efficient management of multiple wires in a small space, which not only improves space utilization but also optimizes the overall layout of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the test device for simulating a low temperature fault of the axle temperature sensor in a high-speed train.

[0020] Figure 2 This is a partial structural diagram of the rear side of the chassis area of ​​this utility model.

[0021] Figure 3 This is a partial structural schematic diagram of the handle area of ​​this utility model from a side view.

[0022] Figure 4 This is a schematic diagram of the working process of the test device for simulating a low temperature fault of the axle temperature sensor of a high-speed train.

[0023] In the diagram: 1. Power supply box; 2. Power interface; 3. Display screen a; 4. Chassis; 5. Adjustable resistor; 6. Mounting bracket; 7. Motherboard; 8. Core a; 9. Core b; 10. Network port; 11. Interface a; 12. Interface b; 13. Interface c; 14. Interface d; 15. Display screen b; 16. Analyzer; 17. Computer; 18. Connecting rod; 19. Fixed shaft; 20. Fixing plate; 21. Mounting plate; 22. Clamping plate; 23. Clamping teeth; 24. Handle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figure 1-4 The test device shown simulates a low temperature fault of the axle temperature sensor of a high-speed train, including power supply box 1 and chassis 4;

[0026] The motherboard 7 is located inside the chassis 4;

[0027] The cores a8 and b9 are located inside the front outer wall of motherboard 7;

[0028] The left outer wall of the motherboard 7 is fixedly connected with interfaces a11, b12, c13, and d14 at equal intervals from top to bottom. The analyzer 16 is located on the left side of the chassis 4, and the computer 17 is located below the analyzer 16. Multiple adjustable resistors 5 are installed inside the chassis 4. The power supply box 1 supplies power to the entire system, ensuring normal operation of the equipment. When the adjustable resistor 5 is set to a low resistance state, the signal output by the corresponding temperature sensor will show a low temperature state. This analog signal is connected to the motherboard 7 through an interface and processed by core a8 or core b9. Core a8 is used for maintenance, and core b9 is used for control. The maintenance chip is used to facilitate the download of data logs by staff via network cable. The motherboard 7 collects and analyzes data through the core, comparing the received temperature signal with the preset range. In a simulated low temperature fault scenario, the system will recognize that the temperature is lower than the preset alarm value. Once the core detects the temperature deviation... If the temperature rise rate is low, the system will trigger the corresponding alarm mechanism and display the fault information through the analyzer 16 and computer 17, reminding the operator to carry out maintenance or other necessary measures. When the temperature rise rate is less than -10 degrees Celsius per minute, and the temperature at this location is 20 degrees Celsius lower than the average of other locations on the same side, if the above conditions are met and last for five seconds, the channel will not participate in the early warning / alarm judgment and will report a temporary fault in the sensor channel. Fault clearance mechanism: If the above temperature rise rate condition is not met, or the temperature difference condition is not met, the temperature difference threshold setting is set to a 3-degree Celsius hysteresis, that is, when the temperature is 17 degrees Celsius lower than the average of other locations on the same side, it is considered that the temperature difference condition is not met, and the fault is cleared. After the fault is cleared, the temperature difference and threshold alarm logic will be executed normally, and the temperature rise rate alarm logic will continue to be executed using the data before the fault was reported. However, the diagnostic results will not be trusted within 65 seconds after the fault is cleared, that is, if a pre-alarm occurs within 65 seconds, it will not be reported, and after 65 seconds, it will be reported normally.

[0029] Multiple connecting rods 18 are provided on the rear side of the chassis 4 for winding and separating the circuits. When carrying the required equipment, different circuits can be wound around different connecting rods 18 for winding. When retrieving them later, they can be quickly removed, and the need to organize the circuits can be avoided.

[0030] like Figure 2 and Figure 3 As shown, multiple mounting plates 21 are fixedly connected at equal intervals to the rear outer wall of the chassis 4 to restrict the position of the connecting rod 18. Each mounting plate 21 has a fixing plate 20 inside, and each fixing plate 20 has a fixing shaft 19 inside. Each connecting rod 18 has a handle 24 fixedly connected to the front outer wall to drive the connecting rod 18 to wind up the line under the action of external force and under the restriction of the fixing shaft 19.

[0031] When winding the wire, grasp the handle 24 and rotate it counterclockwise so that the wire is wound around the connecting rod 18. As the handle 24 rotates, the connecting rod 18 will rotate under the restriction and guidance of the fixed shaft 19, thereby driving the wire to wind and rewind.

[0032] like Figure 2 and Figure 3 As shown, clamping plates 22 are fixedly connected to the front outer walls of multiple fixing plates 20 to hold one end of the line, and clamping teeth 23 are fixedly connected to the rear outer walls of multiple handles 24 to hold the other end of the line after it is wound up.

[0033] When winding the cable, first move one end of the cable between the clamp 22 and the connecting rod 18 to pre-fix the cable. Then rotate the handle 24 to wind the cable. After winding, move the end of the cable into the clamp 23 to fix the cable.

[0034] like Figure 1 As shown, the front outer wall of the power supply box 1 is provided with multiple power interfaces 2, which are connected to the line to supply power to the electrical equipment. The front outer wall of the power supply box 1 is provided with two display screens a3 to display the voltage and resistance.

[0035] Multiple power interfaces 2 allow for direct connection of lines to connected electrical equipment, such as chassis 4, analyzer 16, and computer 17. Display screen a3 displays the voltage and resistance information of power supply box 1, facilitating real-time monitoring of power status by operators to ensure normal equipment operation.

[0036] like Figure 1 As shown, the chassis 4 has a mounting bracket 6 inside to separate and limit the positions of multiple adjustable resistors 5. The left outer wall of the motherboard 7 has a network port 10 for connecting to an external network cable. The front outer wall of the analyzer 16 has a display screen b15 embedded inside to limit the analyzed values.

[0037] The mounting bracket 6 is used to fix and separate multiple adjustable resistors 5, ensuring their stable position during testing and thus guaranteeing the reliability of the test results. The network port 10 allows connection to an external network, facilitating data transmission and device communication. The display screen b15 is used to display the analyzed values, enabling operators to intuitively understand the test results.

[0038] like Figure 1 As shown, the analyzer 16 is connected to network port 10, interface a11, interface b12, interface c13 and interface d14 via communication lines, and the chassis 4, the analyzer 16 and the computer 17 are connected via communication lines.

[0039] The analyzer 16 is connected to network port 10, interface a11, interface b12, interface c13 and interface d14, enabling the analyzer 16 to send and receive data and communicate effectively with the motherboard 7, sensors and other devices.

[0040] The implementation principle of this embodiment is as follows: Power supply box 1 supplies power to the entire system, ensuring the normal operation of the equipment. When the adjustable resistor 5 is set to a low resistance state, the signal output by the corresponding temperature sensor will show a low temperature state. This analog signal is connected to the motherboard 7 through an interface and processed by core a8 or core b9. Core a8 is used for maintenance, and core b9 is used for control. The maintenance chip is used to facilitate the download of data logs by staff via network cable. The motherboard 7 collects and analyzes data through the core, comparing the received temperature signal with the preset range. In the simulated low temperature fault scenario, the system will identify that the temperature is lower than the preset alarm value. Once the core detects a low temperature, the system will trigger the corresponding alarm mechanism, displaying fault information through analyzer 16 and computer 17 to remind the operator. When maintenance or other necessary measures are performed, if the temperature rise rate is less than -10 degrees Celsius per minute, and the temperature at that location is 20 degrees Celsius lower than the average temperature at other locations on the same side, and these conditions are met simultaneously and continue for five seconds, the channel will not participate in the early warning / alarm judgment and will report a temporary sensor channel fault. The fault clearance mechanism is as follows: if the above temperature rise rate condition or temperature difference condition is not met, and the temperature difference threshold setting has a hysteresis of 3 degrees Celsius (i.e., the temperature is 17 degrees Celsius lower than the average temperature at other locations on the same side), the temperature difference condition is considered not met, and the fault is cleared. After the fault is cleared, the temperature difference and threshold alarm logic will execute normally, and the temperature rise rate alarm logic will continue to execute using the data before the fault was reported. However, the diagnostic results will not be reliable within 65 seconds after the fault is cleared, that is, if a pre-alarm occurs within 65 seconds, it will not be reported, and after 65 seconds, it will be reported normally.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test device for simulating the low temperature fault of the axle temperature sensor of a motor train unit, comprising a power supply box (1) and a case (4); The inside of the case (4) is provided with a mainboard (7); The front end of the mainboard (7) is provided with core a (8) and core b (9); The left end of the mainboard (7) is fixedly connected with interface a (11), interface b (12), interface c (13) and interface d (14) from top to bottom, the left side of the case (4) is provided with an analyzer (16), the lower side of the analyzer (16) is provided with a computer (17), and the inside of the case (4) is provided with a plurality of adjustable resistors (5); characterized in that The rear side of the case (4) is provided with a plurality of connecting rods (18) for separating and winding the circuit.

2. The test device for analog train consist axle temperature sensor temperature low fault according to claim 1, characterized in that: The rear end of the case (4) is fixedly connected with a plurality of mounting plates (21) to limit the position of the connecting rod (18), and the inside of the mounting plate (21) is provided with a fixing plate (20).

3. The test device for analog locomotive axle temperature sensor temperature low fault according to claim 2, characterized in that: The inside of the fixing plate (20) is provided with a fixed shaft (19), and the front end of the connecting rod (18) is fixedly connected with a handle (24) to drive the connecting rod (18) to wind the circuit under the action of external force and under the limitation of the fixed shaft (19).

4. The test device for analog locomotive axle temperature sensor temperature low fault according to claim 3, characterized in that: The front end of the fixing plate (20) is fixedly connected with a clamping plate (22) to hold one end of the circuit, and the rear end of the handle (24) is fixedly connected with a clamping tooth (23) to hold the other end of the circuit after winding.

5. The test device for analog locomotive axle temperature sensor low temperature fault according to claim 1, characterized in that: The front end of the power supply box (1) is provided with a plurality of power supply interfaces (2) to supply power to the electrical equipment after plugging the circuit, and the front end of the power supply box (1) is provided with two display boards a (3) to display the voltage resistance.

6. The test device for analog locomotive axle temperature sensor low temperature fault according to claim 1, characterized in that: The inside of the case (4) is provided with a fixing frame (6) to separate and limit the position of the plurality of adjustable resistors (5), and the left end of the mainboard (7) is provided with a network port (10) for plugging the external network cable.

7. The test device for analog locomotive axle temperature sensor low temperature fault according to claim 1, characterized in that: The front end of the analyzer (16) is embedded with a display screen b (15) to limit the analyzed value.

8. The test device for analog locomotive axle temperature sensor low temperature fault according to claim 1, characterized in that: The analyzer (16) is connected with the network port (10), interface a (11), interface b (12), interface c (13) and interface d (14) through a communication line, and the case (4), the analyzer (16) and the computer (17) are connected through a communication line.

Images