Rail transit system relay testboard detection device

Abstract

The utility model discloses a track traffic system relay testboard detection device. The rail transit system relay testboard detection device comprises a device shell. A high-precision universal meter, a stopwatch, a phase difference detection module, a resistance plate, a switch used for being in butt joint with a rail transit system relay test board, an indicator lamp and a test interface are arranged in the device shell. And the switch, the indicating lamp and the test interface are electrically connected with the high-precision universal meter, the stopwatch, the phase difference detection module and the resistance plate respectively. Wherein the resistance plate is provided with a conduction resistance selection module and an insulation resistance selection module. The relay test bench has the beneficial effects that the relay test bench integrates the detection and calibration functions of a plurality of electrical parameters of the relay test bench used in the current rail transit system.

Description

Technical Field

[0001] The utility model relates to the detection field of a rail transit system, in particular to a detection device for a relay test bench of a rail transit system. Background Art

[0002] The test contents of the rail transit system relay test bench include detection response time, AC and DC output performance indicators (such as voltage, current, synchronization, phase), insulation resistance test, conduction resistance test, etc. The existing relay tester verification device is designed based on the "JJG1112-2015 Relay Protection Tester" standard. That is, the detection contents of the existing relay tester verification device only include: response time, AC and DC output performance indicators, and cannot cover conduction resistance test and insulation resistance test. Summary of the invention

[0003] The utility model aims to solve the problem that the existing relay tester verification device does not have the insulation resistance test and / or conduction resistance test function, and to provide a novel rail transit system relay test bench detection device.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a technical solution: a rail transit system relay test bench detection device, comprising: a device housing; the inside of the device housing is provided with a high-precision multimeter, a stopwatch, a phase difference detection module, a resistor board, and a switch, an indicator light and a test interface for connecting to the rail transit system relay test bench; wherein the switch, the indicator light and the test interface are electrically connected to the high-precision multimeter, the stopwatch, the phase difference detection module and the resistor board, respectively; wherein the resistor board has an on-resistance selection module and an insulation resistance selection module.

[0005] As a preferred solution of the detection device of the rail transit system relay test bench, the on-resistance selection module has more than two branches and a band switch for controlling whether each of the branches is connected.

[0006] As a preferred solution for the detection device of the relay test bench of the rail transit system, the on-resistance selection module has eight branches, the first branch has a relay and a 5mΩ on-resistance, the second branch has a relay and a 50mΩ on-resistance, the third branch has a relay and a 100mΩ on-resistance, the fourth branch has a relay and a 1Ω on-resistance, the fifth branch has a relay and a 10Ω on-resistance, the sixth branch has a relay and a 100Ω on-resistance, the seventh branch has a relay and a 1KΩ on-resistance, and the eighth branch has a relay and a 5KΩ on-resistance.

[0007] As a preferred solution of the detection device of the rail transit system relay test bench, the insulation resistance selection module has more than two branches and a band switch for controlling whether each of the branches is connected.

[0008] As a preferred solution for the rail transit system relay test bench detection device, the insulation resistance selection module has four branches, the first branch has a 10MΩ insulation resistance, the second branch has a 30MΩ insulation resistance, the third branch has a 50MΩ insulation resistance, and the fourth branch has a 100MΩ insulation resistance.

[0009] Compared with the prior art, the utility model has at least the following beneficial effects: integrating the detection and calibration functions of many electrical parameters of the relay test bench currently used in the rail transit system. Using one detection device, the detection and calibration functions of the electrical parameters output by the relay test bench, such as DC voltage, DC current, AC voltage, AC current, coil resistance, contact resistance, action time, insulation resistance, temperature, phase difference, etc., can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a rail transit system relay test bench detection device according to an embodiment of the utility model.

[0011] Figure 2 It is a structural schematic diagram of a multimeter according to an embodiment of the utility model.

[0012] Figure 3 It is a structural schematic diagram of an on-resistance selection module according to an embodiment of the utility model.

[0013] Figure 4 It is a structural schematic diagram of the insulation resistance selection module of the embodiment of the utility model. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below through specific implementations in combination with the accompanying drawings. It should be noted that the description of these implementations is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0015] See also Figure 1 , shown in the figure is a detection device for a rail transit system relay test bench. The detection device is used for relay protection detection of a rail transit system relay test bench, and the detection contents include: response time, performance indicators of AC and DC outputs, insulation resistance test, on-resistance test, etc. The shell of the detection device includes: a high-precision multimeter 1, a DC 24V power supply 2, a DC 5V power supply 3, a programmable controller 4, a wireless router 5, a current limiting resistor 6, a 485-to-network module 7, a temperature module 8, a relay group 9, a stopwatch 10, a phase difference detection module 11, a resistor board 12, a signal relay simulation plug 13, a switch, an indicator light and a test interface 14, and a power input interface.

[0016] The DC 24V power supply 2 is electrically connected to the programmable controller 4, the wireless router 5, the temperature module 8, the relay group 9, the stopwatch 10, the phase difference detection module 11 and the switch, indicator light and test interface 14 respectively to provide power to them.

[0017] The DC 5V power supply 3 is electrically connected to the 485-to-network module 7 to provide power to it. The programmable controller 4 is electrically connected to the relay group 9.

[0018] The programmable controller 4 controls the operation of the relay group 9 according to preset instructions or instructions from a terminal computer.

[0019] The 485-to-network module 7 is respectively connected to the temperature module 8, the time meter 10, the phase difference detection module 11 and the wireless router 5. The 485-to-network module 7 transmits the temperature, time, phase difference and other electrical signals from the temperature module 8, the time meter 10 and the phase difference detection module 11 to the wireless router 5 in a 485 communication transmission mode.

[0020] The resistor board 12 is electrically connected to the switch, the indicator light and the test interface 14. The resistor board 12 has an on-resistance selection module and an insulation resistance selection module. According to the resistance level selected by the switch, a fixed resistance value is output at the resistance output interface.

[0021] One end of the signal relay simulation plug 13 is electrically connected to the rail transit system relay test bench, and the other end is electrically connected to the switch, indicator light and test interface 14. The signal relay simulation plug 13 is used to simulate the states of the signal relay coil, contacts and the like in the field test, so that the working conditions during the detection and calibration of the relay test bench are completely consistent with those during actual use, reducing the workload of the user, improving work efficiency and making it easier to use.

[0022] The power input interface is electrically connected to the DC 24V power supply 2 and the DC 5V power supply 3 respectively, and converts the mains power into DC 24V and DC 5V.

[0023] See also Figure 2, the DC current and AC current signals of the rail transit system relay test bench enter the high-precision multimeter 1 through the signal relay simulation plug 13, relays JA01, JA02, JA03, and JA04. The programmable controller 4 can control JA01, JA02, JA03, and JA04 to be closed or opened respectively. Among them, JA01 and JA02 are used to perform tests on DC voltage and AC voltage. When JA01 and JA02 are closed at the same time, the DC voltage and AC voltage of the rail transit system relay test bench directly enter the high-precision multimeter 1 (switched to the voltage gear). Among them, JA03 is used to perform tests on DC current and AC current with a range less than 3A. When JA03 is closed, the DC current and AC current signals of the rail transit system relay test bench enter the high-precision multimeter 1 (switched to the current gear, 3A range) through the current limiting resistor 6. Among them, JA04 is used to perform tests on DC current and AC current with a range greater than 3A and less than 10A. When JA04 is closed, the DC current and AC current signals of the rail transit system relay test bench enter the high-precision multimeter 1 (switched to the current gear, 10A range) through the current limiting resistor 6. The high-precision multimeter 1 is connected to the wireless router 5 through a network cable. The high-precision multimeter 1 is used to detect the DC current and AC current signals of the rail transit system relay test bench, and transmit the detection results to the terminal computer through the wireless router 5. The terminal computer can display the DC voltage, DC current, AC voltage, and AC current values, and compare them with the DC voltage, DC current, AC voltage, and AC current meters of the rail transit system relay test bench to complete the detection and calibration of DC voltage, DC current, AC voltage, and AC current.

[0024] The action time signal of the rail transit system relay test bench enters the stopwatch 10 through the signal relay simulation plug 13. The stopwatch 10 is used to detect the action time signal of the rail transit system relay test bench, and transmit the detection result to the terminal computer through the 485 to network module 7 and the wireless router 5 in sequence. The terminal computer can display the detection result of the stopwatch 10, and compare it with the action time instrument of the rail transit system relay test bench to complete the detection and calibration of time.

[0025] The phase difference signal of the rail transit system relay test bench enters the phase difference detection module through the test line. One end of the switch, indicator light and test interface 14 is electrically connected to the phase difference detection module 11, and the other end is electrically connected to the phase difference output interface of the rail transit system relay test bench using a test line. The phase difference detection module is used to detect the phase difference signal of the rail transit system relay test bench, and transmit the detection results to the terminal computer in sequence through the 485 to network module 7 and the wireless router 5. The terminal computer can display the phase difference value, which is compared with the phase difference instrument of the rail transit system relay test bench to complete the phase difference detection and calibration.

[0026] See also Figure 3 , the figure shows an on-resistance selection module. The on-resistance selection module has eight branches and a band switch for controlling the access of the eight branches. The first branch has a relay JA05 and a 5mΩ on-resistance. The second branch has a relay JA06 and a 50mΩ on-resistance. The third branch has a relay JA07 and a 100mΩ on-resistance. The fourth branch has a relay JA08 and a 1Ω on-resistance. The fifth branch has a relay JA09 and a 10Ω on-resistance. The sixth branch has a relay JA10 and a 100Ω on-resistance. The seventh branch has a relay JA11 and a 1KΩ on-resistance. The eighth branch has a relay JA12 and a 5KΩ on-resistance. The programmable controller 4 can control JA05, JA06, JA07, JA08, JA09, JA10, JA11, and JA12 to be closed or opened respectively. If only JA05 is closed, it means that the on-resistance selection module selects a 5mΩ on-resistance. If only JA06 is closed, it means that the on-resistance selection module selects 50mΩ on-resistance. If only JA07 is closed, it means that the on-resistance selection module selects 100mΩ. If only JA08 is closed, it means that the on-resistance selection module selects 1Ω on-resistance. If only JA09 is closed, it means that the on-resistance selection module selects 10Ω on-resistance. If only JA10 is closed, it means that the on-resistance selection module selects 100Ω on-resistance. If only JA11 is closed, it means that the on-resistance selection module selects 1KΩ on-resistance. If only JA12 is closed, it means that the on-resistance selection module selects 5KΩ on-resistance.

[0027] See also Figure 4, the figure shows an insulation resistance selection module. The insulation resistance selection module has four branches and a band switch for controlling the access of the four branches. The first branch has an insulation resistance of 10MΩ. The second branch has an insulation resistance of 30MΩ. The third branch has an insulation resistance of 50MΩ. The fourth branch has an insulation resistance of 100MΩ. Through the band switch, any one of the four branches can be selected to be in the access state. The insulation resistance value selected by the insulation resistance selection module enters the rail transit system relay test bench through the signal relay simulation plug 13. The insulation resistance meter of the rail transit system relay test bench displays the insulation resistance value, completing the detection and calibration of the insulation resistance.

[0028] The above only expresses the implementation mode of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A rail transit system relay test bench detection device, characterized in that: include: Device housing; inside the device housing are a high-precision multimeter, a stopwatch, a phase difference detection module, a resistor board, and a switch, an indicator light, and a test interface for connecting to a rail transit system relay test bench; wherein the switch, the indicator light, and the test interface are electrically connected to the high-precision multimeter, the stopwatch, the phase difference detection module, and the resistor board, respectively; wherein the resistor board has an on-resistance selection module and an insulation resistance selection module.

2. The rail transit system relay test bench detection device according to claim 1, characterized in that: The on-resistance selection module has more than two branches and a band switch for controlling whether each branch is connected.

3. The rail transit system relay test bench detection device according to claim 2, characterized in that: The on-resistance selection module has eight branches, the first branch has a relay and a 5mΩ on-resistance, the second branch has a relay and a 50mΩ on-resistance, the third branch has a relay and a 100mΩ on-resistance, the fourth branch has a relay and a 1Ω on-resistance, the fifth branch has a relay and a 10Ω on-resistance, the sixth branch has a relay and a 100Ω on-resistance, the seventh branch has a relay and a 1KΩ on-resistance, and the eighth branch has a relay and a 5KΩ on-resistance.

4. The rail transit system relay test bench detection device according to claim 1, characterized in that: The insulation resistance selection module has more than two branches and a band switch for controlling whether each branch is connected.

5. The rail transit system relay test bench detection device according to claim 4, characterized in that: The insulation resistance selection module has four branches, the first branch has an insulation resistance of 10 MΩ, the second branch has an insulation resistance of 30 MΩ, the third branch has an insulation resistance of 50 MΩ, and the fourth branch has an insulation resistance of 100 MΩ.

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