Relay reliability monitoring system

Abstract

The invention relates to a relay reliability monitoring system which is characterized by comprising a polarity control unit (1), a control system unit (2), an excitation unit (3), a load unit (4), a reliability monitoring unit (5), a to-be-tested relay (6) and a state feedback unit (7). The polarity control unit (1) is used for manually / automatically switching the positioning or anti-position state of the tested relay of the whole system and switching all positioning or anti-position devices corresponding to the tested relay; the control system unit (2) is used for issuing a control command to each independent function of the whole system, realizing a related logic service function and externally providing an operation interface; in the electrical life period of the railway signal relay, the contact reliability of the relay contact is monitored in real time, and scientific and reasonable data support is provided for predicting the state of the contact reliability in the electrical life period of the relay.

Description

Technical Field

[0001] The invention relates to a relay reliability monitoring system, which is used for monitoring the contact reliability of a railway signal relay during its electrical life. Background Art

[0002] Railway signal relays are core components of railway signaling equipment. They form logic circuits or serve as actuators in railway signal automation and remote control systems. The reliability of the contacts over their electrical lifespan impacts system safety, and even the slightest flaw is unacceptable. Therefore, quality control of these contacts is crucial.

[0003] Existing relay contact reliability detection devices all perform single-function verification. For example, in life tests, only resistive or inductive loads are loaded on the contacts. The test data is obtained under single environmental conditions, which is somewhat different from the actual application environment on site. Therefore, there is an urgent need to develop a device and method that can adapt to different environments and monitor the contact reliability of signal relays during their electrical life. Summary of the Invention

[0004] The purpose of the present invention is to provide a relay reliability monitoring system, which monitors the contact reliability of railway signal relays during their electrical life, and provides scientific and reasonable data support for predicting the state of contact reliability during the electrical life of the relays.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is: a relay reliability monitoring system, comprising a polarity control unit, a control system unit, an excitation unit, a load unit, a reliability monitoring unit, a relay to be tested, and a state feedback unit; The polarity control unit is used to manually / automatically switch the positioning or reverse position state of the relay under test in the entire system, and simultaneously switch all positioning or reverse position devices corresponding to the relay under test; The control system unit is used to issue control commands to each independent function of the entire system, realize related logical business functions, and provide an external operation interface; it includes selecting the relay electrical life mode, sending relay action, load control, reliability collection instructions, and collecting relay status.

[0006] The excitation unit is used to receive instructions from the control system unit, drive all relay coils or magnetic devices in the system, including the relay under test, in the forward and reverse directions, and convert them into electrical signals to control the action of the relay magnetic circuit system, thereby orderly controlling the fixed and reverse polarity of the relay.

[0007] The load unit provides resistive load, inductive load loading or unloading for the relay under test in the system. It is designed according to the load that the relay contacts can withstand and has the ability to connect and disconnect.

[0008] The reliability monitoring unit has the function of testing the reliability of relay contacts, performing tests mainly on the contact reliability and life of the relay under test, and loading and unloading related test circuits. It can also receive instructions sent by the control system unit, convert the instructions into electrical signals, collect the contact reliability of the relay contacts, and feed back the test results to the control system unit.

[0009] The state feedback unit is used to obtain information such as the corresponding function operation results, test data and the current state of the relay under test after the control system unit operates the above functions.

[0010] The advantages of the present invention are: during the electrical life of a railway signal relay, the contact reliability of the relay contacts can be monitored in real time, thereby providing scientific and reasonable data support for predicting the state of the contact reliability during the electrical life of the relay; the state of the contacts during the life of the relay can be intuitively displayed through a data statistical curve, thereby providing data support for in-depth research on the relay.

[0011] The present invention will be further described below with reference to the embodiments and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a control block diagram of the present invention.

[0013] In the figure, 1. Polarity control unit; 2. Control system unit; 3. Excitation unit; 4. Load unit; 5. Reliability monitoring unit; 6. Relay to be tested; 7. State feedback unit. DETAILED DESCRIPTION

[0014] In order to further illustrate the technical means and methods adopted by the present invention to achieve the predetermined purpose, the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1 As shown, the present invention relates to a relay reliability monitoring system, which includes a polarity control unit 1, a control system unit 2, an excitation unit 3, a load unit 4, a reliability monitoring unit 5, a relay to be tested 6, and a state feedback unit 7.

[0016] The polarity control unit 1 is used to manually / automatically switch the positioning or reverse position state of the relay under test of the entire system, and switch all positioning or reverse position devices corresponding to the relay under test; The control system unit 2 is used to issue control commands to each independent function of the entire system, realize related logical business functions, and provide an external operation interface; The excitation unit 3 is used to drive all relay coils or magnetic devices in the system, including the relay under test, in the forward and reverse directions; The load unit 4 is used to load or unload loads such as resistance and inductance for the relay under test in the system; The reliability monitoring unit 5 is used to test the relay under test mainly on contact reliability and lifespan, and to load and unload related test circuits; The relays to be tested 6 are relays to be tested of different models; The state feedback unit 7 is used to obtain information such as the corresponding function operation results, test data and the current state of the relay under test through the state feedback unit after the control system unit operates the above functions.

[0017] like Figure 1 As shown, the control port of the control system unit 2 is electrically connected to the input ports of the polarity control unit 1, the excitation unit 3, the load unit 4, and the reliability monitoring unit 5, respectively. The output ports of the excitation unit 3, the load unit 4, and the reliability monitoring unit 5 are electrically connected to the relay to be tested 6, respectively. The relay to be tested 6 is electrically connected to the feedback input port of the control system unit 2 through the state feedback unit 7.

[0018] The excitation unit 3 drives the coil or magnetic device of the relay 6 to be tested forward and reverse. Before the excitation unit 3 drives the relay 6 to be tested forward and reverse, the load unit 4 provides a load such as resistance or inductance to the relay 6 to be tested. The load is either a continuously increasing or decreasing amount, or is unloaded.

[0019] When the excitation unit 3 is in the excitation state and the load unit 4 is in the loaded state, the reliability monitoring unit 5 performs a real-time test on the contact reliability and life of the relay 6 under test, and performs a real-time test on the contact reliability and life of the relay 6 under the excitation state and the unloaded state of the load unit 4.

[0020] In the above-mentioned excitation state of the excitation unit 3 and the load state of the load unit 4, the state feedback unit 7 is electrically connected to the feedback input port of the control system unit 2, and the process information is fed back to the control system unit 2 in real time to adjust the excitation state of the excitation unit 3 or the load state of the load unit 4.

[0021] The polarity control unit 1 is used to control the positioning or reverse position state of the relay under test during manual / automatic switching.

[0022] like Figure 1 As shown, the implementation process of the relay reliability monitoring system of the present invention is as follows: 1) Start the system, switch the polarity control unit 1 to the position to connect each unit of the reliability monitoring test, and the control system unit 2 collects the status of the polarity control unit 1 to determine whether the test conditions are correct.

[0023] 2) The control system unit 2 sends an instruction to the excitation unit 3. The excitation unit 3 converts the received instruction into a DC24V electrical signal to excite the rear coil of the relay, putting the relay in the reverse state.

[0024] 3) 20 milliseconds after the control system unit 2 sends the instruction to the excitation unit 3, the state of the reverse position contact of the relay 6 to be tested is collected to determine whether the relay 6 to be tested is in the reverse position state; 4) The control system unit 2 sends a command to the load unit 4, which converts the received command into an electrical signal and applies the corresponding load to the contact of the relay 6 to be tested; 5) The control system unit 2 sends an excitation instruction to the excitation unit 3 again. The excitation unit 3 converts the received instruction into a DC24V electrical signal to excite the front coil of the relay, causing the relay to turn from the reverse position to the positioning state, completing the process of the relay positioning contact being connected with load.

[0025] 6) 20 milliseconds after the control system unit 2 sends the instruction to the excitation unit 3, the state of the positioning contact of the relay 6 to be tested is collected to determine that the relay 6 to be tested is in the positioning state; 7) The control system unit 2 sends an instruction to the load unit 4. The load unit 4 converts the received instruction into an unloading electrical signal, unloading the corresponding load to ensure that there is no load on the positioning contact of the relay 6 to be tested.

[0026] 8) The control system unit 2 sends an instruction to the reliability monitoring unit 5. After receiving the instruction, the reliability monitoring unit 5 starts to detect the contact reliability of the positioning and reverse contacts of the relay 6 to be tested.

[0027] 9) Continue to repeat the cycle according to the above control process until the entire life cycle is completed. We take the JYJXC-160 / 260 type pole-enhanced contact relay as an example to further illustrate the present invention.

[0028] After positioning and connecting the reliability monitoring and electrical life test, the following process begins: 1) Start the device, switch the polarity control unit 1 to the position to connect the reliability monitoring test conditions, and the control system unit 2 collects the status of the polarity control unit 1 to confirm that the test conditions are correct;

[0029] 2) The control system unit 2 sends a command to the excitation unit 3. The excitation unit 3 converts the received command into a DC24V electrical signal to excite the rear coil of the relay, putting the relay in the reverse position;

[0030] 3) 20 milliseconds after the control system unit 2 sends the instruction to the excitation unit 3, the state of the reverse position contact (141-143) of the relay 6 to be tested is collected to determine that the relay 6 to be tested is in the reverse position state; 4) The control system unit 2 sends a command to the load unit 4. The load unit 4 converts the received command into an electrical signal and applies an inductive load (DC220V, 7.5A, 0.05h) to the first group (111J-112J) and the second group (121J-122J) of the positioning contacts of the relay 6 to be tested. The DC contactor in the state feedback unit 7 indicates the state of the contacts to determine whether the load is normal. 5) The control system unit 2 sends an excitation command to the excitation unit 3 again. The excitation unit 3 converts the received command into an electrical signal (DC24V) to excite the front coil of the relay, causing the relay to switch from the reverse position to the positioning state, completing the process of the relay positioning contact being connected with load.

[0031] 6) 20 milliseconds after the control system unit 2 sends the instruction to the excitation unit 3, the state of the relay (141-142) contacts is collected through the board card in the state feedback unit 7 to determine whether the steering is normal; the state of the positioning contacts (141-142) of the relay 6 to be tested is collected to determine whether the relay 6 to be tested is in the positioning state; 7) The control system unit 2 sends a command to the load unit 4. The load unit 4 converts the received command into an unloading electrical signal, disconnects the inductive load (DC220V, 7.5A, 0.05h) from the first and second groups of positioning contacts of the relay under test 6, and determines whether the unloading is normal based on the state of the indicating contacts of the DC contactor in the state feedback unit 7; 8) The control system unit 2 sends an instruction to the reliability monitoring unit 5. After receiving the instruction, the reliability monitoring unit 5 starts to detect the contact reliability of the positioning contacts (111J-112J, 121J-122J) of the relay 6 to be tested, and obtains the test results through the state feedback unit 7;

[0032] Continue to repeat the cycle from 1) and 8) according to the above control process to complete the test throughout the life cycle.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any changes, replacements or improvements made to the structures and features described in the scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A relay reliability monitoring system, characterized by: It includes a polarity control unit (1), a control system unit (2), an excitation unit (3), a load unit (4), a reliability monitoring unit (5), a relay to be tested (6), and a state feedback unit (7); The polarity control unit (1) is used to manually / automatically switch the positioning or reverse position state of the relay under test of the entire system, and to switch all positioning or reverse position devices corresponding to the relay under test; The control system unit (2) is used to issue control commands to each independent function of the entire system, realize related logical business functions, and provide an external operation interface; The excitation unit (3) is used to drive all relay coils or magnetic devices in the system, including the relay under test, in the forward and reverse directions; The load unit (4) is used to load or unload loads such as resistance and inductance for the relay under test in the system; The reliability monitoring unit (5) is used to test the relay under test mainly on contact reliability and lifespan, and to load and unload related test circuits; The relays to be tested (6) mentioned above are relays to be tested of different models; The state feedback unit (7) is used to obtain information such as the corresponding function operation result, test data and the current state of the relay under test through the state feedback unit after the control system unit operates the above functions.

2. A relay reliability monitoring system according to claim 1, characterized in that: The control port of the control system unit (2) is electrically connected to the input ports of the polarity control unit (1), the excitation unit (3), the load unit (4), and the reliability monitoring unit (5), respectively; the output ports of the excitation unit (3), the load unit (4), and the reliability monitoring unit (5) are electrically connected to the relay to be tested (6), respectively; and the relay to be tested (6) is electrically connected to the feedback input port of the control system unit (2) through the state feedback unit (7).

3. A relay reliability monitoring system according to claim 1, characterized in that: The excitation unit (3) drives the coil or magnetic device of the relay (6) to be tested in forward and reverse directions. Before the excitation unit (3) drives the relay (6) to be tested in forward and reverse directions, the load unit (4) provides a load such as resistance or inductance to the relay (6) to be tested. The load is either a continuously increasing or decreasing amount, or is unloaded.

4. A relay reliability monitoring system according to claim 3, characterized in that: When the excitation unit (3) is in an excitation state and the load unit (4) is in a loaded state, the reliability monitoring unit (5) performs a real-time test on the relay (6) to be tested for contact reliability and lifespan, and when the excitation unit (3) is in an excitation state and the load unit (4) is in an unloaded state, the reliability monitoring unit (5) performs a real-time test on the contact reliability and lifespan of the relay (6) to be tested.

5. A relay reliability monitoring system according to claim 3, characterized in that: When the excitation unit (3) is in the excitation state and the load unit (4) is in the load state, the state feedback unit (7) is electrically connected to the feedback input port of the control system unit (2), and the process information is fed back to the control system unit (2) in real time to adjust the excitation state of the excitation unit (3) or the load state of the load unit (4).

6. A relay reliability monitoring system according to claim 1, characterized in that: The implementation process of the system is as follows: 1) Start the system, switch the polarity control unit (1) to the position to connect each unit of the reliability monitoring test, and the control system unit (2) collects the status of the polarity control unit (1) to determine whether the test conditions are correct; 2) The control system unit (2) sends a command to the excitation unit (3), and the excitation unit (3) converts the received command into a DC24V electrical signal to excite the rear coil of the relay, causing the relay to turn to the reverse position; 3) 20 milliseconds after the control system unit (2) sends an instruction to the excitation unit (3), the state of the reverse position contact of the relay to be tested (6) is collected to determine whether the relay to be tested (6) is in the reverse position state; 4) The control system unit (2) sends an instruction to the load unit (4), and the load unit (4) converts the received instruction into an electrical signal and applies a corresponding load to the contact of the relay to be tested (6); 5) The control system unit (2) sends an excitation instruction to the excitation unit (3) again. The excitation unit (3) converts the received instruction into a DC24V electrical signal to excite the front coil of the relay, so that the relay switches from the reverse position to the positioning state, completing a relay life test (positioning contact is connected with load) action; 6) 20 milliseconds after the control system unit (2) sends an instruction to the excitation unit (3), the state of the positioning contact of the relay to be tested (6) is collected to determine that the relay to be tested (6) is in the positioning state; 7) The control system unit (2) sends an instruction to the load unit (4), and the load unit (4) converts the received instruction into an unloading electrical signal, disconnects the corresponding load, and ensures that there is no load on the positioning contact of the relay to be tested (6); 8) The control system unit (2) issues an instruction to the reliability monitoring unit (5), and the reliability monitoring unit (5) starts to detect the contact reliability of the positioning and reverse contact points of the relay (6) to be tested after receiving the instruction; 9) Continue to repeat the cycle according to the above control process until the test is completed.

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