Signal resistance-capacitance box testing device

Abstract

The utility model provides a signal resistance-capacitance box testing device, which belongs to the field of resistance-capacitance box devices, and comprises an industrial personal computer, a serial port relay module, an LCR digital bridge, a leakage current tester and a testing device, the industrial personal computer is connected with the LCR digital bridge, the LCR digital bridge is connected with the serial port relay module, the industrial personal computer is connected with the leakage current tester, and the testing device is connected with the serial port relay module. The leakage current tester is connected with the serial port relay module, the industrial personal computer is connected with the serial port relay module, and the serial port relay module is connected with the testing device. The testing device provided by the utility model can realize full-automatic testing of the resistance-capacitance box, greatly reduces the labor intensity of detection personnel, improves the detection efficiency, and ensures the detection quality.

Description

Technical Field

[0001] The utility model relates to the field of resistor-capacitor box devices, in particular to a signal resistor-capacitor box testing device. Background Art

[0002] The high-voltage pulse track circuit is a new type of track circuit developed to solve the problem of poor shunt caused by rust on the rail surface of railway rails. Its basic principle is to use high-voltage pulses to improve the instantaneous breakdown ability of the rail surface, thereby improving the shunt sensitivity of the track circuit. Compared with other track circuits, the main characteristics of the high-voltage pulse track circuit are higher instantaneous rail surface voltage, asymmetric pulse frequency and less interference, so it can adapt to the coexistence of various types of track circuits in my country. This track circuit has many advantages such as high shunt sensitivity and rail insulation damage protection, strong anti-interference ability, simple equipment, and convenient maintenance. The basic circuit of the high-voltage pulse track circuit is that the sending end track power supply is transformed by the encoder to generate an asymmetric pulse signal, which is then stepped down by the transformer and transmitted to the receiving end by the rail, and then sent to the decoder after being stepped up by the transformer. The decoder converts the asymmetric signal from the rail surface into two (head and tail) DC signals for the differential relay to work. The high-voltage pulse track circuit is a track circuit designed for the purpose of improving shunt sensitivity and fast action. It is mainly composed of a high-voltage pulse generator, a pulse receiver, and a single closed magnetic track relay. In high-voltage pulse track circuits, electromagnetic relays are usually used together with RC boxes to slow down the absorption and stabilize the excitation, effectively preventing instantaneous interference and light vehicle jumping.

[0003] The electromagnetic system of the electromagnetic relay is an inductor with an iron core. When the power is turned on or off, due to the electromagnetic induction, eddy currents are generated in the iron core and induced currents are generated in the circuit. The magnetic flux generated by these currents hinders the change of the original magnetic flux in the iron core, so the electromagnetic relay has some slow-action time characteristics to a greater or lesser extent, but its slow-action time is very short. In order to extend the slow-action time of the relay, the method of connecting the RC box in parallel at both ends of the relay is adopted. The RC box plays the role of slow-action and stable excitation in the slow-action delay circuit of the track relay against instantaneous interference, effectively preventing instantaneous interference and light vehicle jumping. When the performance of the RC box decreases, especially the capacitance decreases, the slow-action delay time of the electromagnetic relay is shortened, resulting in the failure of the signal equipment to work properly, affecting the normal use of the signal equipment. At this time, the RC box needs to be tested. The test of the RC box is to measure the performance parameters of the resistor, capacitor, and diode inside it.

[0004] The existing testing method is to manually use a multimeter to test the resistors, capacitors, and diodes in the RC box. The disadvantages of using a multimeter to manually test the RC box are: difficult operation. Since there are many types of RC boxes, even the same type has different internal structures. Manual testing requires checking the circuit diagram to find the pins, which is very cumbersome and cannot guarantee the test quality; there are hidden dangers. The multimeter cannot perform qualitative or quantitative tests on the change of the capacitor state. When the capacitor capacity remains unchanged but the absorption and discharge capacity is greatly reduced, the multimeter measures a normal result. At this time, continuing to use the RC box in the track circuit will cause safety hazards. Therefore, a signal RC box test device is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a signal resistor-capacitor box test device to solve the technical problem of low quality of the existing manual test resistor-capacitor box. The utility model can automatically complete the electrical performance test of the railway signal resistor-capacitor box, reduce the labor intensity of the test personnel, and can reduce the error rate of the test, ensure the quality of the test, and achieve the purpose of improving the quality and efficiency of the railway signal resistor-capacitor box test, thereby improving the quality and efficiency of the work of the electrical personnel.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A signal resistance-capacitance box test device comprises an industrial computer, a serial port relay module, an LCR digital bridge, a leakage current tester and a test device, wherein the industrial computer is connected to the LCR digital bridge, the LCR digital bridge is connected to the serial port relay module, the industrial computer is connected to the leakage current tester, the leakage current tester is connected to the serial port relay module, the industrial computer is connected to the serial port relay module, and the serial port relay module is connected to the test device.

[0008] Furthermore, the industrial computer is connected to a QR code scanner.

[0009] Furthermore, the industrial computer is connected to a laser printer.

[0010] Furthermore, the industrial computer is connected to a QR code printer.

[0011] Furthermore, the test device includes a test interface 1, a test interface 2, a test interface 3, a test interface 4, a resistor R1, a resistor R2, a resistor R3, a capacitor C2 and a diode D1, the input end of the diode D1 is respectively connected to the test interface 2 and the negative electrode of the capacitor C2, the output end of the diode D1 is respectively connected to the test interface 4, one end of the resistor R1 and one end of the resistor R3, one end of the resistor R2 is respectively connected to the test interface 3 and the other end of the resistor R1, and the other end of the resistor R2 is respectively connected to the test interface 1, the positive electrode of the capacitor C2 and the other end of the resistor R3.

[0012] Furthermore, the test interface 1 is respectively connected to the switch SW1 of the serial port relay module and the switch SW2 of the serial port relay module; the test interface 3 is respectively connected to the switch SW3 of the serial port relay module and the switch SW4 of the serial port relay module; the test interface 4 is respectively connected to the switch SW5 of the serial port relay module and the switch SW6 of the serial port relay module; the test interface 2 is respectively connected to the switch SW7 of the serial port relay module and the switch SW8 of the serial port relay module.

[0013] Further, the switch SW1 of the serial port relay module is connected to the negative test bus, the switch SW2 of the serial port relay module is connected to the positive test bus, the switch SW3 of the serial port relay module is connected to the negative test bus, the switch SW4 of the serial port relay module is connected to the positive test bus, the switch SW5 of the serial port relay module is connected to the negative test bus, the switch SW6 of the serial port relay module is connected to the positive test bus, the switch SW7 of the serial port relay module is connected to the negative test bus, and the switch SW8 of the serial port relay module is connected to the positive test bus.

[0014] Further, the positive test bus is respectively connected to the switch SW10 of the serial port relay module and the switch SW12 of the serial port relay module; the negative test bus is respectively connected to the switch SW9 of the serial port relay module and the switch SW11 of the serial port relay module.

[0015] Further, the LCR digital bridge is respectively connected to the switch SW10 of the serial port relay module and the switch SW9 of the serial port relay module; the leakage current tester is respectively connected to the switch SW12 of the serial port relay module and the switch SW11 of the serial port relay module.

[0016] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0017] The testing device of the utility model can realize full-automatic testing of the resistance-capacitance box, greatly reduces the labor intensity of the testing personnel, improves the testing efficiency, and ensures the testing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the signal resistance-capacitance box test device of the utility model (the blue is the communication line, and the red is the test line);

[0019] Figure 2 It is a schematic diagram of the measurement circuit of a single component of the utility model (the thicker "red line" represents the positive test bus of the instrument, and the thicker "black line" represents the negative test bus of the instrument). DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0021] like Figure 1 As shown, a signal RC box test device includes an industrial computer, a serial port relay module, an LCR digital bridge, a leakage current tester and a test device. The industrial computer is connected to the LCR digital bridge, the LCR digital bridge is connected to the serial port relay module, the industrial computer is connected to the leakage current tester, the leakage current tester is connected to the serial port relay module, the industrial computer is connected to the serial port relay module, and the serial port relay module is connected to the test device to realize test control and data transmission. The industrial computer is connected to a QR code scanner; the industrial computer is connected to a laser printer; the industrial computer is connected to a QR code printer to realize the input and output printing of RC box information. The test device of the utility model can realize the full-automatic test of RC boxes, greatly reduce the labor intensity of the test personnel, improve the detection efficiency, and ensure the detection quality. The test device can realize the comprehensive quality detection of various types of RC boxes, reduce the workload of the test personnel, and improve the labor productivity; it can accurately measure the RC boxes and automatically determine whether the performance meets the standards, reduce the failure caused by the performance degradation and the interference to the transportation. The test device is used to automatically save test data and ledgers, output test reports and labels, and provide electronic document output for retention, upgrading from manual entry and saving to automatic generation and saving, thereby improving management level and efficiency.

[0022] like Figure 2As shown, the test device includes a test interface 1, a test interface 2, a test interface 3, a test interface 4, a resistor R1, a resistor R2, a resistor R3, a capacitor C2 and a diode D1. The input end of the diode D1 is respectively connected to the test interface 2 and the negative electrode of the capacitor C2, the output end of the diode D1 is respectively connected to the test interface 4, one end of the resistor R1, and one end of the resistor R3, one end of the resistor R2 is respectively connected to the test interface 3 and the other end of the resistor R1, and the other end of the resistor R2 is respectively connected to the test interface 1, the positive electrode of the capacitor C2, and the other end of the resistor R3. The test interface 1 is respectively connected to the switch SW1 of the serial port relay module and the switch SW2 of the serial port relay module, and the switch SW1 of the serial port relay module and the switch SW2 of the serial port relay module are set to be closed at different times; the test interface 3 is respectively connected to the switch SW3 of the serial port relay module and the switch SW4 of the serial port relay module, and the switch SW3 of the serial port relay module and the switch SW4 of the serial port relay module are set to be closed at different times; the test interface 4 is respectively connected to the switch SW5 of the serial port relay module and the switch SW6 of the serial port relay module, and the switch SW5 of the serial port relay module and the switch SW6 of the serial port relay module are set to be closed at different times; the test interface 2 is respectively connected to the switch SW7 of the serial port relay module and the switch SW8 of the serial port relay module, and the switch SW7 of the serial port relay module and the switch SW8 of the serial port relay module are set to be closed at different times. The switch SW1 of the serial port relay module is connected to the negative pole test bus, the switch SW2 of the serial port relay module is connected to the positive pole test bus, the switch SW3 of the serial port relay module is connected to the negative pole test bus, the switch SW4 of the serial port relay module is connected to the positive pole test bus, the switch SW5 of the serial port relay module is connected to the negative pole test bus, the switch SW6 of the serial port relay module is connected to the positive pole test bus, the switch SW7 of the serial port relay module is connected to the negative pole test bus, and the switch SW8 of the serial port relay module is connected to the positive pole test bus. The positive pole test bus is respectively connected to the switch SW10 of the serial port relay module and the switch SW12 of the serial port relay module; the negative pole test bus is respectively connected to the switch SW9 of the serial port relay module and the switch SW11 of the serial port relay module. The LCR digital bridge is respectively connected to the switch SW10 of the serial port relay module and the switch SW9 of the serial port relay module, and the switch SW10 of the serial port relay module and the switch SW9 of the serial port relay module are used to control the LCR digital bridge; the leakage current tester is respectively connected to the switch SW12 of the serial port relay module and the switch SW11 of the serial port relay module, and the switch SW12 of the serial port relay module and the switch SW11 of the serial port relay module are used to control the leakage current tester, and the switch SW10 of the serial port relay module and the switch SW9 of the serial port relay module and the switch SW12 of the serial port relay module and the switch SW11 of the serial port relay module are set to be closed at different times.In order to avoid the switches of two serial port relay modules connected to the same test interface being closed at the same time to form a short circuit, the switches of the two serial port relay modules connected to the same test interface are set to be closed at different times; in order to avoid the switches of serial port relay modules connected to the same test bus from being closed at the same time to form a short circuit, the switches of two odd-numbered serial port relay modules or two even-numbered serial port relay modules are set not to be closed at the same time. The test device measures the RC box, adds the measurement of the capacitance loss tangent and the leakage current, and improves the reliability of the RC box.

[0023] Example

[0024] When measuring the capacitance and loss factor of capacitor C2, an LCR digital bridge is used, and switches SW9 and SW10 of the serial port relay module are closed; the test interface 1 at one end of capacitor C2 is positive, and the test interface 2 at the other end of capacitor C2 is negative, and switches SW2 and SW7 of the serial port relay module are closed to form a test path, and after the measurement, all switches of the above serial port relay modules are reset to an open circuit state; subsequently, leakage current of capacitor C2 is measured, and a leakage current tester is used, switches SW11 and SW12 of the serial port relay module are closed, the test interface 1 at one end of capacitor C2 is positive, and the test interface 2 at the other end of capacitor C2 is negative, and switches SW2 and SW7 of the serial port relay module are closed to form a test path, and after the measurement, all switches of the above serial port relay modules are reset to an open circuit state.

[0025] 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 principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A signal resistance-capacitance box test device, characterized in that: It includes an industrial computer, a serial port relay module, an LCR digital bridge, a leakage current tester and a test device. The industrial computer is connected to the LCR digital bridge, the LCR digital bridge is connected to the serial port relay module, the industrial computer is connected to the leakage current tester, the leakage current tester is connected to the serial port relay module, the industrial computer is connected to the serial port relay module, and the serial port relay module is connected to the test device.

2. A signal resistance-capacitance box testing device according to claim 1, characterized in that: The industrial computer is connected to a QR code scanner.

3. A signal resistance-capacitance box testing device according to claim 1, characterized in that: The industrial computer is connected to a laser printer.

4. A signal resistance-capacitance box testing device according to claim 1, characterized in that: The industrial computer is connected to a QR code printer.

5. The signal RC box testing device according to claim 1, characterized in that: The test device includes a test interface 1, a test interface 2, a test interface 3, a test interface 4, a resistor R1, a resistor R2, a resistor R3, a capacitor C2 and a diode D1. The input end of the diode D1 is respectively connected to the test interface 2 and the negative electrode of the capacitor C2, the output end of the diode D1 is respectively connected to the test interface 4, one end of the resistor R1 and one end of the resistor R3, one end of the resistor R2 is respectively connected to the test interface 3 and the other end of the resistor R1, and the other end of the resistor R2 is respectively connected to the test interface 1, the positive electrode of the capacitor C2 and the other end of the resistor R3.

6. A signal resistance-capacitance box testing device according to claim 5, characterized in that: Test interface 1 is respectively connected to switch SW1 of the serial port relay module and switch SW2 of the serial port relay module; test interface 3 is respectively connected to switch SW3 of the serial port relay module and switch SW4 of the serial port relay module; test interface 4 is respectively connected to switch SW5 of the serial port relay module and switch SW6 of the serial port relay module; test interface 2 is respectively connected to switch SW7 of the serial port relay module and switch SW8 of the serial port relay module.

7. A signal resistance-capacitance box testing device according to claim 6, characterized in that: The switch SW1 of the serial port relay module is connected to the negative test bus, the switch SW2 of the serial port relay module is connected to the positive test bus, the switch SW3 of the serial port relay module is connected to the negative test bus, the switch SW4 of the serial port relay module is connected to the positive test bus, the switch SW5 of the serial port relay module is connected to the negative test bus, the switch SW6 of the serial port relay module is connected to the positive test bus, the switch SW7 of the serial port relay module is connected to the negative test bus, and the switch SW8 of the serial port relay module is connected to the positive test bus.

8. A signal resistance-capacitance box testing device according to claim 7, characterized in that: The positive test bus is respectively connected to the switch SW10 of the serial port relay module and the switch SW12 of the serial port relay module; the negative test bus is respectively connected to the switch SW9 of the serial port relay module and the switch SW11 of the serial port relay module.

9. The signal RC box testing device according to claim 1, characterized in that: The LCR digital bridge is respectively connected to the switch SW10 of the serial port relay module and the switch SW9 of the serial port relay module; the leakage current tester is respectively connected to the switch SW12 of the serial port relay module and the switch SW11 of the serial port relay module.

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