Test tool for outdoor monitoring system of in-station track circuit

Abstract

The invention relates to the technical field of track traffic monitoring, in particular to an in-station track circuit outdoor monitoring system testing tool which is in communication connection with an outdoor monitoring system and comprises a first testing tool signal generating device and a second testing tool signal generating device. The first test tool signal generating device comprises a direct-current power supply, a transmitter, a rheostat and a first winding coil, the direct-current power supply is connected with a power port of the transmitter, a power outlet of the transmitter is sequentially connected with the rheostat and the first winding coil in series, and the second test tool signal generating device comprises a function generator, a signal amplifier, a load resistor and a second winding coil. The signal output end of the function generator is connected with the signal amplifier. The output end of the signal amplifier is sequentially connected with the load resistor and the second coil in series. Compared with the prior art, the method has the advantages of simultaneously testing signals of six center frequencies of an outdoor monitoring system, effectively improving factory test efficiency and reliability of equipment and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit monitoring, and in particular to a test tool for an outdoor monitoring system of in-station track circuits. Background Art

[0002] As a new system, the outdoor monitoring system of in-station track circuits consists of 2 hardware devices and 1 software, namely: an indoor host, an outdoor extension, and in-station monitoring software. System testing requires powering on the 2 devices simultaneously and conducting tests through the in-station monitoring software. Moreover, current signal sources of six center frequencies, namely 25Hz, 50Hz, 1700Hz, 2000Hz, 2300Hz, and 2600Hz of the in-station track circuits need to be considered. Currently, there is no test tool for the entire system in the market. During testing, there are many wiring connections, large requirements for the site, and low efficiency in factory testing of the devices. Therefore, how to improve the debugging accuracy of the outdoor monitoring system of in-station track circuits, improve the factory testing efficiency, and at the same time improve the integration and reliability of the test tool has become a problem to be solved in this field. Summary of the Invention

[0003] The purpose of the present invention is to provide a test tool for an outdoor monitoring system of in-station track circuits to overcome the defects of the existing technology that there is no test tool for the entire system, resulting in low efficiency in factory testing of the devices and low reliability.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] The present invention provides a test tool for an outdoor monitoring system of in-station track circuits, which is communicatively connected to the outdoor monitoring system and includes a first test tool signal generating device and a second test tool signal generating device. The first test tool signal generating device includes a DC power supply, a transmitter, a rheostat, and a first winding coil. The DC power supply is connected to the power supply port of the transmitter, and the power output port of the transmitter is sequentially connected in series with the rheostat and the first winding coil. The second test tool signal generating device includes a function generator, a signal amplifier, a load resistor, and a second winding coil. The signal output end of the function generator is connected to the signal amplifier, and the output end of the signal amplifier is sequentially connected in series with the load resistor and the second winding coil.

[0006] As a preferred technical solution, by adjusting the signal amplitude of the function generator and the amplification ratio of the signal amplifier, the current value of the second winding coil is controlled to match the preset frequency.

[0007] As a preferred technical solution, the preset frequency includes 25Hz and 50Hz.

[0008] As a preferred technical solution, the transmitter further includes a power supply terminal, a plurality of carrier frequency ports and a rotary switch. The power supply terminal is connected to the common terminal of the rotary switch, and the plurality of carrier frequency ports are respectively connected to a plurality of gears of the rotary switch in one-to-one correspondence.

[0009] As a preferred technical solution, the power supply terminal outputs a +24V DC power supply, and the plurality of carrier frequency ports include a 1700Hz carrier frequency port, a 2000Hz carrier frequency port, a 2300Hz carrier frequency port and a 2600Hz carrier frequency port.

[0010] As a preferred technical solution, an indicator light is connected in series between each carrier frequency port and the rotary switch.

[0011] As a preferred technical solution, the test tooling further includes a test tooling debugging auxiliary device, which includes a first industrial control computer, a second industrial control computer, a KVM switch and an external device. The input end of the KVM switch is connected to the first industrial control computer and the second industrial control computer, and the output end is connected to the external device. Both the first industrial control computer and the second industrial control computer are communicatively connected to the outdoor monitoring system.

[0012] As a preferred technical solution, the external device includes a monitor, a keyboard and a mouse, and the monitor, the keyboard and the mouse are respectively connected to the output end of the KVM switch.

[0013] As a preferred technical solution, the rheostat is a sliding rheostat.

[0014] As a preferred technical solution, the test tooling is installed in a cabinet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses the first test tooling signal generating device and the second test tooling signal generating device to respectively generate test signal sources with four center frequencies of 1700Hz, 2000Hz, 2300Hz, 2600Hz and two center frequencies of 25Hz, 50Hz, can output two signals with different frequencies, and simultaneously perform signal tests to complete the signal tests of six center frequencies of the entire system. And a rheostat and a rotary switch are used to quickly obtain frequency shift signals, with simple operation, effectively improving the equipment factory test efficiency and reliability, and further improving the equipment production efficiency;

[0017] 2. The whole of the present invention can be installed in a cabinet, improving the integration degree of the test tooling, reducing the volume of the test tooling, saving the test cost, and improving the maintenance convenience. Description of the Drawings

[0018] Figure 1Schematic diagram of the signal generating device of the first test tooling in the embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the signal generating device of the second test tooling in the embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the debugging auxiliary device of the test tooling in the embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the main product test connection in the embodiment of the present invention;

[0022] Figure 5 Schematic diagram of the current sensor test in the embodiment of the present invention;

[0023] Wherein: 11, 24V DC power supply; 12, transmitter; 13, sliding rheostat; 14, knob switch; 15, indicator light; 16, first winding coil; 21, function generator; 22, signal amplifier; 23, load resistor; 24, second winding coil; 31, first industrial computer; 32, second industrial computer; 33, KVM switch; 341, display; 342, keyboard; 343, mouse. Detailed implementation manners

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and gives detailed implementation manners and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0025] Embodiment

[0026] This embodiment provides a test tooling for the outdoor monitoring system of the in-station track circuit, which can output two signals with different frequencies and perform signal tests simultaneously, effectively improving the efficiency and reliability of the equipment factory test, and further improving the equipment production efficiency. Using this test tooling, uninterrupted data monitoring can be carried out on the products of the outdoor monitoring system of the in-station track circuit, which is convenient for analyzing difficult problems and reliability analysis of the products.

[0027] This test tooling is communicatively connected to the outdoor monitoring system and includes a first test tooling signal generating device and a second test tooling signal generating device.

[0028] The first test tooling signal generating device serves as a test signal source for four center frequencies of 1700Hz, 2000Hz, 2300Hz, and 2600Hz in the entire test tooling. As Figure 1As shown in the figure, the first test tooling signal generating device includes a 24V DC power supply 11, a transmitter 12, a sliding rheostat 13, a knob switch 14, an indicator light 15, and a first winding coil 16. The 24V DC power supply 11 is connected to the power supply port of the transmitter 12, and the power output port of the transmitter 12 is connected in series with the sliding rheostat 13 and the first winding coil 16 in sequence. The transmitter 12 also includes a +24V DC power supply terminal, multiple carrier frequency ports, and a knob switch 14. The multiple carrier frequency ports include a 1700Hz carrier frequency port, a 2000Hz carrier frequency port, a 2300Hz carrier frequency port, and a 2600Hz carrier frequency port, which are connected to the 1st, 2nd, 3rd, and 4th gears of the knob switch 14 in one-to-one correspondence. An indicator light 15 is connected in series between each carrier frequency port and the knob switch 14.

[0029] The second test tooling signal generating device is a test signal source for two center frequencies of 25Hz and 50Hz in the entire test tooling. As Figure 2 shown in the figure, the second test tooling signal generating device includes a function generator 21, a signal amplifier 22, a load resistor 23, and a second winding coil 24. The signal output terminal of the function generator 21 is connected to the signal amplifier 22, and the output terminal of the signal amplifier 22 is connected in series with the load resistor 23 and the second winding coil 24 in sequence.

[0030] As Figure 3 shown in the figure, the test tooling further includes a tooling debugging auxiliary device. The test tooling debugging auxiliary device includes a first industrial control computer 31, a second industrial control computer 32, a KVM switch 33, and an external device. Monitoring software can run in the industrial control computer. The input terminal of the KVM switch 33 is connected to the first industrial control computer 31 and the second industrial control computer 32, and the output terminal is connected to the external device. Both the first industrial control computer 31 and the second industrial control computer 32 are communicatively connected to the outdoor monitoring system. The external device includes a monitor 341, a keyboard 342, and a mouse 343. The monitor 341, the keyboard 342, and the mouse 343 are respectively connected to the output terminal of the KVM switch 33. The display and the keyboard 342 and mouse 343 operations of the first industrial control computer 31 and the second industrial control computer 32 are switched through the KVM switch 33. The first industrial control computer 31 is used to set parameters for the outdoor monitoring system, and the second industrial control computer 32 is used to simulate the communication status of the on-site outdoor monitoring system.

[0031] The outdoor monitoring system includes an indoor host and an outdoor extension. The station monitoring software can run on the indoor host. The outdoor extension is connected to the indoor host through a carrier communication line, and the indoor host is connected to the first industrial control computer 31 and the second industrial control computer 32 through a CAN communication line.

[0032] The foregoing overall device of the test tooling is installed in a cabinet with dimensions of 2350*500*800. During the test, the current sensor in the outdoor extension needs to pass through the inlet / outlet of the winding coil, and its current sensor needs to pass through the winding coil.

[0033] The working principle of the aforementioned test tooling is as follows:

[0034] The test tooling can emit 6 kinds of signals required for testing. As Figure 1 shown, the 24V DC power supply 11 is connected to the power supply port of the transmitter 12 to provide the power required for the operation of the transmitter 12; the sliding rheostat 13 and the first winding coil 16 are connected in series to the power output port of the transmitter 12 to provide the current information of 1700Hz, 2000Hz, 2300Hz, and 2600Hz frequencies required for testing for the outdoor monitoring system of the in-station track circuit. The single-turn (inlet / outlet) current value is controlled by the sliding rheostat 13 to 600mA required for testing, and the 50-turn current value is controlled to 30A required for testing; the knob switch 14 is connected to the +24V port and the 1700Hz, 2000Hz, 2300Hz, and 2600Hz carrier frequency ports of the transmitter 12, and the output signal carrier frequency of the transmitter 12 is controlled through the knob switch 14. If it is necessary for the transmitter 12 to emit a 2600Hz carrier frequency, turn the knob switch 14 to gear 1, and the 2600Hz indicator light will light up simultaneously; if it is necessary for the transmitter 12 to emit a 2300Hz carrier frequency, turn the knob switch 14 to gear 2, and the 2300Hz indicator light will light up simultaneously; if it is necessary for the transmitter 12 to emit a 2000Hz carrier frequency, turn the knob switch 14 to gear 3, and the 2000Hz indicator light will light up simultaneously; if it is necessary for the transmitter 12 to emit a 1700Hz carrier frequency, turn the knob switch 14 to gear 4, and the 1700Hz indicator light will light up simultaneously.

[0035] As Figure 2 shown, the output port of the function generator 21 is connected to the input port of the signal amplifier 22, and the load resistor 23 and the second winding coil 24 signals are connected in series to the output port of the signal amplifier 22 to provide the current information of 25Hz and 50Hz frequencies required for testing for the outdoor monitoring system of the in-station track circuit. By adjusting the signal amplitude of the function generator 21 and the amplification ratio of the signal amplifier 22, the current value of the second winding coil 24 is controlled to 8A for the 25Hz signal and 200A for the 50Hz signal;

[0036] The test tooling needs to display and operate on two upper computers, namely the first industrial control computer 31 and the second industrial control computer 32. As Figure 3 shown, the display 341, keyboard 342, and mouse 343 are connected to the input end of the KVM switch 33, and the display port, keyboard port, and mouse port output ends of the KVM switch 33 are respectively connected to the display port, keyboard port, and mouse port of the first industrial control computer 31 and the second industrial control computer 32, so that a set of display 341, keyboard 342, and mouse 343 can control two industrial control computers simultaneously, and the operations do not interfere with each other.

[0037] When the test tooling needs to perform data configuration for the outdoor extension, as Figure 4As shown in the figure, the indoor host is respectively connected to the outdoor extension and the first industrial control computer 31. The indoor host sends the working power supply to the outdoor extension through the PLC cable. At this time, the outdoor extension operates, and then sends the collected data to the indoor host through the PLC cable, and finally sends it to the first industrial control computer 31 through the CAN line to realize the interconnection and intercommunication of the collected data. The first industrial control computer 31 is equipped with configuration software, and through this software, information such as the network and nodes of the section can be issued and configured.

[0038] When the test tooling needs to check the system communication status and simulate the on-site application environment, such as Figure 4 As shown in the figure, the indoor host is connected to the outdoor extension through the PLC cable and is respectively connected to the first industrial control computer 31 and the second industrial control computer 32 through the CAN communication line. The indoor host sends the working power supply to the outdoor extension through the PLC cable. At this time, the outdoor extension operates, and then sends the collected data to the indoor host through the PLC cable, and is sent to the second industrial control computer 32 through the CAN communication line. If the on-site monitoring software on the second industrial control computer 32 can normally display the corresponding node data, it means that the outdoor monitoring system is working properly and can be reported and put into storage.

[0039] When using the test tooling for testing, such as Figure 5 As shown in the figure, it is necessary to pass the sensor in the outdoor extension through the single wire at the inlet / outlet of the winding coil to test the 25Hz current full-scale signal of 8A and the 50Hz current full-scale signal of 200A of the sensor; and the current full-scale signals of 30A in the four center frequency bands of 1700Hz, 2000Hz, 2300Hz, and 2600Hz.

[0040] In summary, this test tooling can not only configure data for the equipment, but also test the working status of the equipment, and has a series of functions such as factory debugging, factory testing, and repair testing.

[0041] In some other embodiments, the indoor host is respectively connected to the outdoor extension and the first industrial control computer 31. The indoor host sends the working power supply to the outdoor extension through the PLC cable. Through the CANTest tool, the network and nodes of the outdoor extension are modified. For example, when configuring node 2, then connect the indoor host to the second industrial control computer 32 and open the on-site monitoring software. At this time, the data is displayed on the second line.

[0042] In some other embodiments, the indoor host is respectively connected to the outdoor extension and the second industrial control computer 32. The indoor host sends the working power supply to the outdoor extension through the PLC cable. When the first test tooling signal generating device respectively sends signals of 1700Hz, 2000Hz, 2300Hz, and 2600Hz to the winding coil 1 to reach a 30A signal, the on-site monitoring software interface displays the collected signals at the frequency positions corresponding to 1700Hz, 2000Hz, 2300Hz, and 2600Hz. The test results are compared with the device test current signals through the frequency shift on-line tester, and the error does not exceed ±0.6A.

[0043] In some other embodiments, the indoor host is respectively connected to the outdoor extension and the second industrial control computer 32. The indoor host sends the working power supply to the outdoor extension through a PLC cable. When the second test tool signal generating device respectively sends 25 Hz and 50 Hz signals to the winding coil 1 to reach 8 A and 200 A signals, the station monitoring software interface displays the collected signals at the 25 Hz and 50 Hz frequency positions. The test results are compared with the device test current signals through a frequency shift on-line tester. The error of the 25 Hz signal does not exceed 0.16 A, and the error of the 50 Hz signal does not exceed 4 A.

[0044] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A test tool for an outdoor monitoring system of an in-station track circuit, which is communicatively connected to the outdoor monitoring system, and is characterized in that, It includes a first test tooling signal generating device and a second test tooling signal generating device. The first test tooling signal generating device includes a DC power supply, a transmitter, a rheostat, and a first winding coil. The DC power supply is connected to the power port of the transmitter. The power output port of the transmitter is serially connected to the rheostat and the first winding coil in sequence. The second test tooling signal generating device includes a function generator, a signal amplifier, a load resistor, and a second winding coil. The signal output end of the function generator is connected to the signal amplifier. The output end of the signal amplifier is serially connected to the load resistor and the second winding coil in sequence.

2. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 1, and is characterized in that, By adjusting the signal amplitude of the function generator and the amplification ratio of the signal amplifier, the current value of the second winding coil is controlled to match the preset frequency.

3. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 2, and is characterized in that, The preset frequencies include 25 Hz and 50 Hz.

4. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 1, and is characterized in that, The transmitter further includes a power supply terminal, a plurality of carrier frequency ports, and a knob switch. The power supply terminal is connected to the common terminal of the knob switch. The plurality of carrier frequency ports are respectively connected to the plurality of gears of the knob switch in one-to-one correspondence.

5. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 4, and is characterized in that, The power supply terminal outputs a +24 V DC power supply. The plurality of carrier frequency ports include a 1700 Hz carrier frequency port, a 2000 Hz carrier frequency port, a 2300 Hz carrier frequency port, and a 2600 Hz carrier frequency port.

6. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 4, and is characterized in that, An indicator lamp is serially connected between each carrier frequency port and the knob switch.

7. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 1, and is characterized in that, The test tooling further includes a test tooling debugging auxiliary device. The test tooling debugging auxiliary device includes a first industrial control computer, a second industrial control computer, a KVM switch, and an external device. The input end of the KVM switch is connected to the first industrial control computer and the second industrial control computer. The output end is connected to the external device. Both the first industrial control computer and the second industrial control computer are communicatively connected to the outdoor monitoring system.

8. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 7, and is characterized in that, The external device includes a display, a keyboard, and a mouse. The display, the keyboard, and the mouse are respectively connected to the output end of the KVM switch.

9. The test tool for the outdoor monitoring system of the in-station track circuit according to claim 1, and is characterized in that, The rheostat is a slide rheostat.

10. The test tool for the outdoor monitoring system of the in-station track circuit according to any one of claims 1-9, and is characterized in that, The test tooling is installed in a cabinet.

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