Inlet current simulator device and pre-debug method

Abstract

This is an entrance current simulator device. The inlet current simulator device includes a test port, a first switch device (K1), a second switch device (K2), a first variable resistor (RX1), a second variable resistor (RX2), a matching box (HBP-T), a barrier box (WGL-T), a rail transformer, and an ammeter. After the first switch device (K1), the first variable resistor (RX1), and the ammeter are electrically connected, a first analog circuit is formed. After the second switch device (K2), the second variable resistor (RX2), the matching box (HBP-T), the first variable resistor (RX1), and the ammeter are electrically connected, a second analog circuit is formed. After electrically connecting the second switch device (K2), the first variable resistor (RX1), the barrier box (WGL-T) and the ammeter, a third analog circuit is formed, and when the first switch device (K1) and the second switch device (K2) are in a first connection state, the first analog circuit and the test port form a path, when the first switch device (K1) and the second switch device (K2) are in a second connection state, the second analog circuit and the test port form a path, and when the first switch device (K1) and the second switch device (K2) are in a third connection state, the third analog circuit and the test port form a path. An inlet current pre-debug method is further provided.

Description

[Technical field]

[0001] The present application relates to the field of railway signalling technology, and in particular to an entrance current simulator device. [Background technology]

[0002] As the operating speed of China's railway trains continues to improve, people have placed higher requirements on the safety and comfort of train operations. For trains to operate smoothly at high speeds, not only do they need reliable trains and high-quality tracks, but they also need reliable and safe signaling equipment, and train operations will be guided based on this.

[0003] With the popularization of ZPW-2000 type equipment, the updating / modification of coding equipment is particularly important in existing line construction, which not only ensures the quality standard of the installation of coding equipment, but also ensures the safety of train operation in the installation process of the equipment, and also ensures the smooth opening / use of the coding equipment. However, the entrance current test is the most important step among them. During the construction test, the existing coding equipment needs to be removed and the newly installed coding equipment needs to be installed and connected, which takes a long time for the installation process, and the entrance current test is not a single section, but all sections on the train's approach road need to be replaced at the same time and then tested. The skylight time of the existing line construction is short, and it is generally difficult to complete the test, and further testing needs to be done after the existing equipment is restored, especially the effective working time within the skylight time of the busy main line is very short. The workload of the line switching test of the existing line signal interlock construction is very large, the entrance current adjustment cannot be performed synchronously with other interlock tests, and the test cannot be performed until the debugging of other signal devices is completed, which often occupies the line switching time, and in general stations, it takes about an hour to complete, and if a failure occurs in the entrance current debugging, it will further affect the entire construction line switching. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to solve or mitigate the problems existing in the above prior art, the present application provides an inlet current simulator device, which is used to simulate the pre-debugging of the inlet current indoors and outdoors. The technical solution is as follows: [Means for solving the problem]

[0005] An entrance current simulator device including a test port, a first switch device, a second switch device, a first variable resistor, a second variable resistor, a matching box, a barrier box, a rail transformator, and an ammeter, The test ports are two and are used to connect a device under test; forming a first analog circuit that is used to simulate testing of the inlet current circuit outdoors after electrically connecting the first switch device, the first variable resistor, and the ammeter; electrically connecting the second switch device, the second variable resistor, the matching box, the first variable resistor and the ammeter, to form a second analog circuit used to simulate testing of a four-wire coding inlet current circuit in a room; forming a third analog circuit, which is used to simulate testing of a two-wire coding inlet current circuit in a room, after electrically connecting the second switch device, the first variable resistor, the barrier box, and the ammeter; When the first switch device and the second switch device are in a first connection state, a first analog circuit inputs two of the test ports; a second analog circuit that switches on two of the test ports when the first switch device and the second switch device are in a second connection state; When the first switch device and the second switch device are in a third connection state, a third analog circuit is input to two of the test ports; the first switch device includes a first selection switch and a second selection switch, each of the first selection switch and the second selection switch including a common contact, a first contact, and a second contact; the second switch device includes a third selection switch and a fourth selection switch, each of the third selection switch and the fourth selection switch including a common contact, a first contact, and a second contact; the first contact of the first selection switch is electrically connected to the common contact of the third selection switch, and the first contact of the second selection switch is electrically connected to the common contact of the fourth selection switch; The first variable resistor simulates a rail resistance and the second variable resistor simulates a cable resistance. Inlet current simulator device. Beneficial effects

[0006] In the embodiment of the present invention, an inlet current simulator device is provided. It can simulate the test circuit of indoor and outdoor work sections, perform pre-debugging of the inlet current, reduce the use of existing line construction skylights, shorten the adjustment time of the inlet current in the construction line switching process, reduce the workload of workers, improve the efficiency of the line switching blockade test, and ensure the safety and timeliness of the signal interlock modification construction line switching. At the same time, the ammeter is connected in series to read the data more intuitively. According to the needs of the test, it can simulate 4-wire and 2-wire, meet different test needs, have wide application, and are not limited by the test location, and can be used both indoors and outdoors. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a system configuration diagram of an entrance current simulator device. [Diagram 2] 3 is a schematic diagram illustrating the configuration of a first switch device and a second switch device. FIG. [Diagram 3] FIG. 1 is a schematic diagram of an entrance current test circuit during outdoor measurements. [Figure 4] FIG. 1 is a schematic diagram of a four-wire coding inlet current circuit test indoors. [Diagram 5] FIG. 1 is a schematic diagram of a two-wire coding inlet current circuit test indoors. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] As shown in Figure 1, An entrance current simulator device including a test port, a first switch device, a second switch device, a first variable resistor, a second variable resistor, a matching box, a barrier box, a rail transformer, and an ammeter; The test ports are two and are used to connect a device under test; forming a first analog circuit that is used to simulate testing the inlet current circuit outdoors after electrically connecting the first switch device, the first variable resistor, and the ammeter; electrically connecting the second switch device, the second variable resistor, the matching box, the first variable resistor and the ammeter to form a second analog circuit used to simulate testing the four-wire coding inlet current circuit in a room; electrically connecting the second switch device, the first variable resistor, the barrier box and the ammeter to form a third analog circuit used to simulate testing the two-wire coding inlet current circuit in a room; When the first switch device and the second switch device are in a first connection state, the first analog circuit inputs signals to the two test ports; when the first switch device and the second switch device are in a second connection state, the second analog circuit powers two test ports; when the first switch device and the second switch device are in a third connection state, the third analog circuit powers two test ports; 2. An entrance current simulator device comprising:

[0009] 1 is a schematic diagram of the simulator configuration. The second contact 12 of the first selection switch 1, the first variable resistor RX1, and the ammeter are connected in series with each other and then electrically connected to the second contact 22 of the second selection switch 2 to form a first analog circuit, the first contact 31 of the third selection switch 3, the second variable resistor RX2, the matching box HBP-T, the first variable resistor RX1, and the ammeter are connected in series with each other and then electrically connected to the first contact 41 of the fourth selection switch 4 to form a second analog circuit, and the second contact 32 of the third selection switch 3, the first variable resistor RX1, the barrier box WGL-T, and the ammeter are connected in series with each other and then electrically connected to the second contact 42 of the fourth selection switch 4 to form a third analog circuit.

[0010] The first analog circuit is used to simulate the test of the inlet current circuit outdoors, the second analog circuit is used to simulate the test of the four-wire coding inlet current circuit indoors, and the third analog circuit is used to simulate the test of the two-wire coding inlet current circuit indoors, and the three analog circuits are independent of each other and do not affect each other. According to the needs of actual work, the corresponding analog circuit can be selected and connected to the path to perform the inlet current test.

[0011] Each analog circuit is connected in series with an ammeter, which can intuitively display the current data when performing inlet current measurement, and the operation is simple and fast.Three analog circuits simulate the inlet current test circuits required for different tasks, and are integrated into one device, which is convenient to carry and has a wide range of applications, and can meet different demands to improve work efficiency, shorten the test time, and reduce the work intensity at the same time.

[0012] As shown in Fig. 2, Fig. 2 is a schematic diagram of the configuration of the first switch device 1 and the second switch device 2. The first switch device K1 includes a first selection switch 1 and a second selection switch 2, the first selection switch 1 includes a common contact 10, a first contact 11, and a second contact 12, the second selection switch 2 includes a common contact 20, a first contact 21, and a second contact 22, the second switch device K2 includes a third selection switch 3 and a fourth selection switch 4, the third selection switch 3 includes a common contact 30, a first contact 31, and a second contact 32, the fourth selection switch 4 includes a common contact 40, a first contact 41, and a second contact 42, the first contact 11 of the first selection switch 1 is electrically connected to the common contact 30 of the third selection switch 3, and the first contact 21 of the second selection switch 2 is electrically connected to the common contact 40 of the fourth selection switch 4. Depending on the needs of the application, a common contact of the switch can be selected to turn on different contacts.

[0013] As shown in Fig. 3, Fig. 3 is a schematic diagram of the simulator simulating the test of the inlet current circuit outdoors. Combining Fig. 2 and Fig. 3, the first analog circuit is formed by connecting the second contact 12 of the first selection switch 1, the first variable resistor RX1 and the ammeter in series, and then electrically connecting with the second contact 22 of the second selection switch 2. When the common contact 10 of the first selection switch 1 is connected to the second contact 12, the common contact 20 of the second selection switch 2 is connected to the second contact 22, the common contact 30 of the third selection switch 3 is not connected to the first contact 31 and the second contact 32, and the common contact 40 of the fourth selection switch 4 is not connected to the first contact 41 and the second contact 42, the first switch device K1 and the second switch device K2 are in the first connection state, and the first analog circuit is connected to the test port. However, the first variable resistor RX1 in the first analog circuit can simulate the track resistance value of the test section, if it is necessary to perform outdoor testing, the device can be used to select to turn on the first analog circuit, and adjust the resistance value of the first variable resistor RX1 according to the required track length of the test section, so that the resistance value of the first variable resistor RX1 is adjusted to be the same as the track resistance value of the test section, thus forming an outdoor entrance current circuit test, and the test port can be used to perform entrance current measurement at the outdoor rail box.

[0014] As shown in Figure 4, Figure 4 is a schematic diagram of simulating the test of a four-wire coding inlet current circuit indoors. Combining Figure 2 and Figure 4, the second analog circuit is formed by connecting the first contact 31 of the third selection switch 3, the second variable resistor RX2, the matching box HBP-T, the first variable resistor RX1 and the ammeter in series, and then electrically connecting with the first contact 41 of the fourth selection switch 4. When the common contact 10 of the first selection switch 1 is closed to the first contact 11, the common contact 20 of the second selection switch 2 is closed to the first contact 21, the common contact 30 of the third selection switch 3 is closed to the first contact 31, and the common contact 40 of the fourth selection switch 4 is closed to the first contact 41, the first switch device K1 and the second switch device K2 are in the second connection state, and the second analog circuit is closed to the test port. However, the first variable resistor RX1 simulates the track resistance value of the test section, and the second variable resistor RX2 simulates the cable resistance of the test section. The resistance values ​​of the first variable resistor RX1 and the second variable resistor RX2 are adjusted according to the track length of the test section to form an indoor four-wire coding inlet current circuit test, and the test port can be used to perform an indoor four-wire coding inlet current test at the indoor distribution board position.

[0015] As shown in FIG. 5, FIG. 5 is a schematic diagram for simulating the test of a two-wire coding inlet current circuit indoors. Combining FIG. 2 and FIG. 5, the third analog circuit is formed by the second contact 32 of the third selection switch 3, the first variable resistor RX1, the barrier box WGL-T and the ammeter being connected in series, and then electrically connected with the second contact 42 of the fourth selection switch 4; the common contact 10 of the first selection switch 1 is plugged into the first contact 11, and the common contact 20 of the second selection switch 2 is plugged into the first contact 21; Furthermore, when the common contact 30 of the third selection switch 3 is closed to the second contact 32 and the common contact 40 of the fourth selection switch 4 is closed to the second contact 42, the first switch device K1 and the second switch device K2 are in the third connection state, the third analog circuit is closed to the test port, the resistance value of the first variable resistor RX1 is adjusted according to the track length of the test section, a test of the indoor two-wire coding inlet current circuit is formed, and the test port can be used to test the indoor two-wire coding inlet current at the indoor distribution board position.

[0016] This application uses variable resistors to simulate rail resistance and cable line resistance, and simulates test loads, solving the problem of large measurement workload in the actual work process and resolving the contradiction between coding test construction and rail transport. Using electronic components and other devices to simulate the coding circuit device terminal, different analog circuits can be used to test the code type and inlet current of the coding device in advance, and the inlet current simulator can adjust the coding code type and inlet current in advance before the existing line blocking and shunting, check the wiring errors inside and outside the test room, and thoroughly test the indoor and outdoor parts of the coding code issuing circuit in advance, and ensure the accuracy of the test.

[0017] As shown in FIG. 1, the matching box HBP-T has four interfaces, which are a first interface A1, a second interface A2, a third interface A3, and a fourth interface A4, and the barrier box WGL-T has four interfaces, which are a first interface I1, a second interface I2, a third interface I3, and a fourth interface I4, respectively. The connection manner of the matching box HBP-T in the second analog circuit is specifically, the third interface A3 is connected in series with the second variable resistor RX2 and the first contact 31 of the third selection switch 3, the first interface A1 is connected in series with the first variable resistor RX1 and an ammeter and then connected to the second interface A2, and the fourth interface A4 is connected to the first contact 41 of the fourth selection switch 4. The connection manner of the barrier box WGL-T in the third analog circuit is specifically, the third interface I3 is connected to the second contact 42 of the fourth selection switch 4, the first interface I1 is connected in series with the first variable resistor RX1 and an ammeter and then connected to the second interface I2, and the fourth interface I4 is connected to the second contact 42 of the fourth selection switch 4.

[0018] The matching box HBP-T is an indoor four-wire coding track circuit device, and the connection on the second analog circuit adopts a four-wire coding track box wiring method; the barrier box WGL-T is an indoor two-wire coding track circuit device, and the connection on the third analog circuit adopts a two-wire coding track box wiring method.

[0019] The rail transformer is connected in series with one fixed resistor and then electrically connected to the non-interface side of the barrier box WGL-T.

[0020] The non-interface side of the barrier box WGL-T is the other direction other than the four interface edges.

[0021] The apparatus further includes two electrical circuit breakers, one end of which is independently electrically connected to the common contacts of the first selection switch and the second selection switch, respectively, and the other end of which is connected to the two test ports, respectively.

[0022] As shown in Figure 1, two electrical circuit breakers 3A are connected inside the test port, the electrical circuit breakers provide overcurrent protection for this simulator, preventing large current from entering the simulator and damaging it when the measurement position is incorrect.

[0023] When the rail section measured by the device is the receiving end, the fixed resistor is short-circuited and not connected in series with the rail transformer and connected to the non-interface side of the barrier box WGL-T; when the rail section measured by the device is the sending end, the fixed resistor is normally connected in series with the rail transformer and connected to the non-interface side of the barrier box WGL-T.

[0024] The tested rail section is divided into a receiving end and a sending end, and whether the fixed resistor of the third analog circuit has access to the analog circuit depends on whether the rail section is a receiving end or a sending end.

[0025] When performing an outdoor inlet current test, the common contact 10 of the first selection switch 1 and the common contact 20 of the second selection switch 2 are turned on to their second contacts, the first analog circuit is turned on, and the resistance value of the first variable resistor RX1 is adjusted according to the steel rail length of the test section, and then the outdoor inlet current test is performed. When testing the four-wire coding current indoors, the common contact 10 of the first selection switch 1 and the common contact 20 of the second selection switch 2 are closed to their respective first contacts, and the common contact 30 of the third selection switch 3 and the common contact 40 of the fourth selection switch 4 are closed to their respective first contacts, the second analog circuit is turned on, and the resistance value of the first variable resistor RX1 and the resistance value of the second variable resistor RX2 are adjusted according to the steel rail length and the cable length of the test section, and then the four-wire coding inlet current is tested indoors. When performing indoor two-wire coding current testing, the common contact 10 of the first selection switch 1 and the common contact 20 of the second selection switch 2 are respectively put into the first contact, and the common contact 30 of the third selection switch 3 and the common contact 40 of the fourth selection switch 4 are respectively put into the second contact, the third analog circuit is turned on, and the resistance value of the first variable resistor RX1 is adjusted according to the steel rail length of the test section, and then the indoor two-wire coding inlet current testing is performed. Inlet current pre-debug method.

[0026] The specific implementation of the above steps of the method can be referred to the relevant contents of the above entrance current simulator device, and will not be described further here.

Claims

1. An entrance current simulator apparatus including a test port, a first switch device, a second switch device, a first variable resistor, a second variable resistor, a matching box, a barrier box, a rail transformer, and an ammeter; The test ports include two ports for connecting a device under test. forming a first analog circuit that is used to simulate testing of the inlet current circuit outdoors after electrically connecting the first switch device, the first variable resistor, and the ammeter; electrically connecting the second switch device, the second variable resistor, the matching box, the first variable resistor and the ammeter, to form a second analog circuit used to simulate testing of a four-wire coding inlet current circuit in a room; forming a third analog circuit, which is used to simulate testing of a two-wire coding inlet current circuit in a room, after electrically connecting the second switch device, the first variable resistor, the barrier box, and the ammeter; a first analog circuit that activates two of the test ports when the first switch device and the second switch device are in a first connection state; a second analog circuit that activates two of the test ports when the first switch device and the second switch device are in a second connection state; a third analog circuit that inputs a third signal to two of the test ports when the first switch device and the second switch device are in a third connection state; the first switch device includes a first selection switch and a second selection switch, each of the first selection switch and the second selection switch including a common contact, a first contact, and a second contact; the second switch device includes a third selection switch and a fourth selection switch, each of the third selection switch and the fourth selection switch including a common contact, a first contact, and a second contact; the first contact of the first selection switch is electrically connected to the common contact of the third selection switch, and the first contact of the second selection switch is electrically connected to the common contact of the fourth selection switch; The first variable resistor simulates a rail resistance and the second variable resistor simulates a cable resistance.

2. An entrance current simulator device comprising:

2. the first analog circuit is configured by connecting the second contact of the first selection switch, the first variable resistor, and the ammeter in series and then electrically connecting the second contact of the second selection switch, and when the common contact of the first selection switch is connected to the second contact, the common contact of the second selection switch is connected to the second contact, the common contact of the third selection switch is not connected to the first contact or the second contact, and the common contact of the fourth selection switch is not connected to the first contact or the second contact, the first switch device and the second switch device are in a first connection state; 2. An entrance current simulator device according to claim 1.

3. the second analog circuit is configured by connecting a first contact of the third selection switch, the second variable resistor, the matching box, the first variable resistor, and the ammeter in series, and then electrically connecting the first contact of the fourth selection switch, and when the common contact of the first selection switch is connected to the first contact, the common contact of the second selection switch is connected to the first contact, the common contact of the third selection switch is connected to the first contact, and the common contact of the fourth selection switch is connected to the first contact, the first switch device and the second switch device are in a second connection state; 2. An entrance current simulator device according to claim 1.

4. the third analog circuit is configured by connecting the second contact of the third selection switch, the first variable resistor, the barrier box, and the ammeter in series, and then electrically connecting the second contact of the fourth selection switch, and when the common contact of the first selection switch is connected to the first contact, the common contact of the second selection switch is connected to the first contact, the common contact of the third selection switch is connected to the second contact, and the common contact of the fourth selection switch is connected to the second contact, the first switch device and the second switch device are in a third connection state; 2. An entrance current simulator device according to claim 1.

5. The matching box and the barrier box each have four interfaces, which are a first interface, a second interface, a third interface, and a fourth interface, respectively; a connection method of the matching box in the second analog circuit is that the third interface is connected in series with the second variable resistor and a first contact of the fourth selection switch, the first interface is connected in series with the first variable resistor and the ammeter, and then connected to the second interface, and the fourth interface is connected to a first contact of the third selection switch; a connection method of the barrier box in the third analog circuit is that the third interface is connected to a second contact of the fourth selection switch, the first interface is connected in series with the first variable resistor and the ammeter, and then connected to the second interface, and the fourth interface is connected to a second contact of the third selection switch.

2. An entrance current simulator device according to claim 1.

6. The rail transformer is connected in series with a fixed resistor and then electrically connected to the non-interface side of the barrier box.

6. An entrance current simulator device according to claim 5.

7. The circuit breaker further includes two electrical circuit breakers, one end of each of which is independently electrically connected to the common contacts of the first selection switch and the second selection switch, and the other end of each of which is connected to the two test ports.

2. An entrance current simulator device according to claim 1.

8. When the rail section being measured is the receiving end, the fixed resistor is short-circuited and is not connected in series with the rail transformer and connected to the non-interface side of the barrier box, and when the rail section being measured is the transmitting end, the fixed resistor is normally connected in series with the rail transformer and connected to the non-interface side of the barrier box.

7. An entrance current simulator device according to claim 6.

9. When performing an outdoor entrance current test, the common contact of the first selection switch and the common contact of the second selection switch are turned on to the second contact, the first analog circuit is turned on, and the resistance value of the first variable resistor is adjusted based on the steel rail length of the test section, and then the entrance current test is performed outdoors. When performing a four-wire coding current test indoors, the common contact of the first selection switch and the common contact of the second selection switch are respectively turned on to the first contact, and the common contact of the third selection switch and the common contact of the fourth selection switch are respectively turned on to the first contact, and the resistance value of the first variable resistor and the resistance value of the second variable resistor are respectively adjusted according to the steel rail length and the cable length of the test section, and then the four-wire coding input current test indoors is performed. When performing a two-wire coding current test indoors, the common contact of the first selection switch and the common contact of the second selection switch are respectively connected to the first contact, and the common contact of the third selection switch and the common contact of the fourth selection switch are respectively connected to the second contact, the third analog circuit is turned on, and the resistance value of the first variable resistor is adjusted according to the steel rail length of the test section, and then the two-wire coding inlet current is tested indoors. A pre-debug method applied to an entrance current simulator device according to any one of claims 1 to 8.

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