Intelligent insulation detection device for railway carriage wiring

Abstract

The utility model discloses a railway carriage wiring intelligent insulation detection device, the device comprises a programmable industrial control computer, a master control module, an insulation detector, a switching circuit and a power supply module, the programmable industrial control computer is electrically connected with the master control module, the switching circuit is electrically connected with the master control module, the switching circuit is electrically connected with the insulation detector, and the power supply module is electrically connected with the insulation detector. The insulation detector is electrically connected with the programmable industrial personal computer, and the power supply module is electrically connected with the programmable industrial personal computer, the main control module and the insulation detector. According to the utility model, the industrial personal computer sends an instruction to control the main control module, the main control module controls the switching circuit, the switching circuit is utilized to connect each test circuit, and then the insulation detector is utilized to carry out insulation detection on the connected circuit, so that the insulation test of the whole vehicle wiring to the ground and between the wires is automatically carried out, and the insulation of each wiring is accurately tested; the insulation detection efficiency is improved, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of railway passenger car wiring insulation detection, in particular to an intelligent insulation detection device for railway passenger car wiring. Background Art

[0002] Currently, passenger car operators and maintenance organizations use traditional megohmmeters for manual insulation testing of passenger car wiring. The insulation data is manually entered, and the test results are manually analyzed. This leads to errors and mistakes in insulation testing, analysis, and judgment of railway passenger cars due to human error, creating the risk of lax control of critical data for preventing electrical fires on passenger cars. Manual measurement can lead to missed measurements, low test efficiency, and low accuracy. To address these issues, the present application provides an intelligent insulation testing device for railway passenger car wiring that addresses these issues. Utility Model Content

[0003] The purpose of the utility model is to provide an intelligent insulation detection device for railway passenger car wiring in response to the above-mentioned problems, which solves the problems of missed detection and missed judgment in manual testing of passenger car wiring insulation, and at the same time improves the test efficiency and accuracy by testing insulation data through microcomputer operation, making it more convenient to create data files and analyze them as well as to perform real-time quality control of key data.

[0004] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0005] According to one aspect of the present invention, there is provided an intelligent insulation detection device for railway passenger car wiring, comprising a programmable industrial computer, a main control module, an insulation detector, a switching circuit and a power supply module;

[0006] The programmable industrial computer is electrically connected to the main control module;

[0007] The switching circuit is electrically connected to the main control module;

[0008] The switching circuit is electrically connected to the insulation tester;

[0009] The insulation tester is electrically connected to the programmable industrial control machine;

[0010] The power supply module is electrically connected to the programmable industrial computer, the main control module and the insulation tester respectively.

[0011] Preferably, the main control module includes a main control unit, a power supply unit, a serial communication unit and a drive unit, and the main control unit is electrically connected to the power supply unit, the serial communication unit and the drive unit respectively.

[0012] Preferably, the main control unit includes a host chip, and the model of the host chip is ATMEGA64.

[0013] Preferably, the power supply unit includes a power supply chip, and the power supply chip is electrically connected to the host chip.

[0014] Preferably, the serial communication unit includes a serial communication chip, and the serial communication chip is electrically connected to the host chip.

[0015] Preferably, the driving unit includes a plurality of first driving chips, each of the first driving chips is electrically connected to the host chip, each of the first driving chips is electrically connected to a plurality of second driving chips, and each of the second driving chips is electrically connected to the switching circuit.

[0016] Preferably, the switching circuit includes a plurality of relays, and the plurality of relays are electrically connected to the second driving chip respectively.

[0017] Preferably, the power supply module includes a DC power supply, a DCDC step-down circuit and a DCAC boost circuit, the DC power supply is electrically connected to the DCDC step-down circuit and the DCAC boost circuit respectively, the DCDC step-down circuit is electrically connected to the programmable industrial computer and the host chip respectively, and the DCAC boost circuit is electrically connected to the insulation tester.

[0018] Preferably, it further comprises a printer, and the printer is electrically connected to the programmable industrial control computer.

[0019] Preferably, it further comprises an audible and visual alarm module, which comprises an alarm and an LED light, wherein the alarm is connected in parallel with the DC power supply, and the LED light is connected in series with the DC power supply.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The utility model controls the main control module by sending instructions through the industrial computer. The main control module controls the switching circuit, connects the test circuits by using the switching circuit, and then uses the insulation tester to perform insulation testing on the connected circuits. It automatically performs insulation testing on the ground and between lines of the entire vehicle wiring, so that the insulation of each wiring is accurately tested, thereby improving the insulation testing efficiency and the detection accuracy.

[0022] 2. The utility model controls the switching circuit through the main control module. The switching circuit can be connected to multiple bus wiring to be tested. It can complete the test of multiple groups of insulation data between lines and to the ground of the bus wiring at one time, greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a circuit principle diagram of the utility model;

[0024] Figure 2 This is a circuit diagram of the main control unit of the utility model;

[0025] Figure 3 This is a circuit diagram of the serial communication unit of the utility model;

[0026] Figure 4 This is a circuit diagram of the drive unit of the utility model;

[0027] Figure 5 This is a circuit diagram of the switching circuit of the utility model;

[0028] Figure 6 It is a circuit principle diagram of the power supply unit of the utility model. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in this specification are merely provided to help the reader gain a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0030] See also Figures 1 to 6 The utility model provides an intelligent insulation detection device for railway passenger car wiring, and the technical solution is as follows:

[0031] like Figure 1 As shown, an intelligent insulation testing device for railway passenger car wiring includes a programmable industrial computer, a main control module, an insulation tester, a switching circuit, and a power supply module. The programmable industrial computer is electrically connected to the main control module, which is electrically connected to the switching circuit, which is electrically connected to the insulation tester. The switching circuit is connected to the passenger car wiring to be tested. The programmable industrial computer sends a control command, which the main control module receives and controls the switching circuit to connect the wiring circuit to be tested. The insulation tester detects the insulation parameters of the wiring circuit and transmits the parameters back to the industrial computer, completing the insulation test of the passenger car wiring.

[0032] Specifically, such as Figure 2As shown, the master control module includes a master control unit, a power supply unit, a serial communication unit, and a drive unit. The master control unit includes a master chip and a slave chip. The master chip model is ATMEGA64, and the slave chip model is 10PH-AVR. The master chip has 64 pins. The RXD pin of the master chip is electrically connected to the MOSI pin of the slave chip, the TXD pin of the master chip is electrically connected to the MISO pin of the slave chip, and the clock pin of the master chip is electrically connected to the pin of the slave chip.

[0033] like Figure 3 As shown, the host chip is electrically connected to the programmable industrial computer via a serial communication unit. The serial communication unit includes a MAX232 serial communication chip. The R1OUT pin of the serial communication chip is electrically connected to the RXD pin of the host chip, and the T1IN pin of the serial communication chip is electrically connected to the TXD pin of the host chip. The T1OUT and R1IN pins of the serial communication chip are electrically connected to the programmable industrial computer via a connection terminal COM. Specifically, the T1OUT pin of the serial communication chip is electrically connected to the first pin of the connection terminal COM, which is electrically connected to the first transmitting terminal of the programmable industrial computer. The R1IN pin of the serial communication chip is electrically connected to the second pin of the connection terminal COM, which is electrically connected to the first receiving terminal of the programmable industrial computer.

[0034] like Figure 4 As shown, the host chip is electrically connected to the switching circuit through the drive unit. The drive unit includes four first driver chips, namely the first driver chip A, the first driver chip B, the first driver chip C, and the first driver chip D. The 2-9 pins of the first driver chip A are electrically connected to the PA0-7 pins of the host chip in a one-to-one correspondence. The 2-9 pins of the first driver chip B are electrically connected to the PB0-7 pins of the host chip in a one-to-one correspondence. The 2-9 pins of the first driver chip C are electrically connected to the PC0-7 pins of the host chip in a one-to-one correspondence. The 2-9 pins of the first driver chip D are electrically connected to the PD0-7 pins of the host chip in a one-to-one correspondence. Each of the first driver chips A, B, C, and D is connected to four second driver chips. The model of the second driver chip is MC34063, and each second driver chip has two outputs. Each of the first driver chip A, the first driver chip B, the first driver chip C and the first driver chip D corresponds to four second driver chips, for a total of 16 second driver chips. The 16 second driver chips correspond to 32 outputs, and the 32 outputs are respectively connected to the switching circuits.

[0035] like Figure 5As shown, the switching circuit includes 32 relays, each connected to the output points of the 32 second driver chips. These 32 relays are connected in a specific sequence via multiple lines and then connected to the insulation tester in a specific order. Using these 32 relays, up to 88 lines can be switched at once, allowing for 100 sets of insulation value tests. The 32 relays are controlled by the host chip according to a specific logic based on the microcontroller program, enabling a single tester to sequentially test the insulation of multiple lines.

[0036] like Figure 6 As shown, the host chip is connected to the power supply module via a power supply unit. Specifically, the power supply unit includes a power supply chip, model MC34063. The VCC pin of the power supply chip is connected to the connection terminal POWER through a diode D1, and the connection terminal POWER is connected to the power supply module. Pin 2 of the power supply chip is an output pin, which is electrically connected to the host chip, slave chip, serial communication chip, first driver chip, and second driver chip, respectively, to provide power to each chip.

[0037] like Figure 1 As shown, the power supply module includes a DC power supply, a DC-DC step-down circuit, and a DCAC step-up circuit. The DC power supply is a 60V DC power supply. Two DC-DC step-down circuits are provided: a first DC-DC step-down circuit and a second DC-DC step-down circuit. The first DC-DC step-down circuit is connected in parallel with the DC power supply and is connected to a programmable industrial computer. The first DC-DC step-down circuit reduces the 60V DC voltage to 24V DC for use by the programmable industrial computer. The second DC-DC step-down circuit is connected in parallel with the DC power supply and is connected to the connectable terminal POWER. The second DC-DC step-down circuit reduces the 60V DC voltage to 24V DC for use by each unit chip in the main control module. The DCAC boost circuit is connected in parallel with the DC power supply, and the DCAC boost circuit is connected to the insulation tester. The DCAC boost circuit converts DC60V into AC220V inverter power to power the insulation tester. The model of the insulation tester is TH2683A. The receiving end of the insulation tester is electrically connected to the second transmitting end of the programmable industrial computer, and the transmitting end of the insulation tester is electrically connected to the second receiving end of the programmable industrial computer.

[0038] Further, such as Figure 1 As shown, the system also includes a printer, which is electrically connected to a DCAC boost circuit that converts 60V DC into 220V AC inverter power to power the printer. The printer is also electrically connected to a programmable industrial computer. After receiving test data from the insulation tester, the programmable industrial computer can print the data to the printer for staff to review and record.

[0039] Furthermore, if Figure 1As shown, the device also includes an audible and visual alarm module, which includes a siren and an LED light. The siren is connected in parallel with the DC power supply, and the LED light is connected in series with the DC power supply. When the voltage of the DC power supply falls below 55V, an audible and visual alarm is triggered, prompting the staff to charge the battery in time.

[0040] When in use, the programmable industrial computer sends instructions to the main control module, the main control module controls the relay to attract the corresponding test circuit, the insulation tester detects the connected circuit and obtains the insulation test data, and the insulation tester sends the insulation test data back to the programmable industrial computer. The programmable industrial computer analyzes the obtained data to confirm whether the corresponding circuit is qualified, and finally prints the test data through a printer for the staff to review.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An intelligent insulation detection device for railway passenger car wiring, characterized in that: Including programmable industrial computer, main control module, insulation tester, switching circuit and power supply module; The programmable industrial computer is electrically connected to the main control module; The switching circuit is electrically connected to the main control module; The switching circuit is electrically connected to the insulation tester; The insulation tester is electrically connected to the programmable industrial control machine; The power supply module is electrically connected to the programmable industrial computer, the main control module and the insulation tester respectively.

2. The intelligent insulation detection device for railway passenger car wiring according to claim 1, characterized in that: The main control module includes a main control unit, a power supply unit, a serial communication unit and a drive unit. The main control unit is electrically connected to the power supply unit, the serial communication unit and the drive unit respectively.

3. The intelligent insulation detection device for railway passenger car wiring according to claim 2, characterized in that: The main control unit includes a host chip, and the model of the host chip is ATMEGA64.

4. The intelligent insulation detection device for railway passenger car wiring according to claim 3, characterized in that: The power supply unit includes a power supply chip, and the power supply chip is electrically connected to the host chip.

5. The intelligent insulation detection device for railway passenger car wiring according to claim 3, characterized in that: The serial communication unit includes a serial communication chip, and the serial communication chip is electrically connected to the host chip.

6. The intelligent insulation detection device for railway passenger car wiring according to claim 3, characterized in that: The driving unit includes a plurality of first driving chips, each of which is electrically connected to the host chip, each of which is electrically connected to a plurality of second driving chips, and each of which is electrically connected to the switching circuit.

7. The intelligent insulation detection device for railway passenger car wiring according to claim 6, characterized in that: The switching circuit includes a plurality of relays, and the plurality of relays are electrically connected to the second driving chip respectively.

8. The intelligent insulation detection device for railway passenger car wiring according to claim 3, characterized in that: The power supply module includes a DC power supply, a DCDC step-down circuit and a DCAC boost circuit. The DC power supply is electrically connected to the DCDC step-down circuit and the DCAC boost circuit respectively. The DCDC step-down circuit is electrically connected to the programmable industrial computer and the host chip respectively. The DCAC boost circuit is electrically connected to the insulation tester.

9. The intelligent insulation detection device for railway passenger car wiring according to claim 1, characterized in that: It also includes a printer, which is electrically connected to the programmable industrial control machine.

10. The intelligent insulation detection device for railway passenger car wiring according to claim 8, characterized in that: It also includes an audible and visual alarm module, which includes an alarm and an LED light. The alarm is connected in parallel with the DC power supply, and the LED light is connected in series with the DC power supply.

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