Electrical performance testing device for electromagnetic relay and testing method thereof

Abstract

The present application relates to the field of electrical performance detection of electromagnetic relay, and particularly relates to an electrical performance testing device of electromagnetic relay and a testing method thereof, the testing device comprises a power supply, a power supply interface matched with the power supply, a power switch, further comprises a testing circuit board, the testing circuit board is provided with an electromagnetic relay testing interface matched with the power switch, a five-way switch matched with the electromagnetic relay testing interface, a switch switch matched with the switch switch, a multimeter testing interface matched with the switch switch and a multimeter, and the specific steps are as follows: S1, connecting a testing system; S2, performance testing under a non-powered state; S3, performance testing under a powered state; S4, performance determination; the electrical performance automation and high-efficiency testing of the electromagnetic relay are realized through the integrated circuit board, compared with the traditional testing method, the measurement accuracy is significantly improved, the testing time is effectively shortened, and the technical pain points of low accuracy and slow efficiency in the traditional testing method are solved.

Description

Technical Field

[0001] This invention relates to the field of electrical performance testing technology for electromagnetic relays, specifically to an electrical performance testing device and method for electromagnetic relays. Background Technology

[0002] Electrical performance testing of electromagnetic relays is a core aspect of aviation equipment maintenance and support, its fundamental purpose being to ensure reliable operation of equipment in scenarios such as load switching and control, signal transmission and interlocking. If an electromagnetic relay fails due to contact sticking, insulation breakdown, or delayed operation, it may cause problems such as flight control anomalies. Therefore, it is essential to accurately determine whether the relay meets the reliability requirements after installation by testing key indicators such as contact resistance, ensuring stable operation of the equipment after deployment. Currently, the mainstream method for testing electromagnetic relay performance typically involves energizing the relay's electromagnetic coil to drive the internal contacts to close, and then manually measuring the change in contact resistance before and after energization using a multimeter to evaluate performance. However, this method is cumbersome, inefficient, and requires rewiring when replacing the relay, severely restricting the timeliness of maintenance and support.

[0003] Existing electromagnetic relay testing methods primarily rely on manually measuring the relay's resistance in both operating and non-operating states using a multimeter to determine its electrical performance. This method has several drawbacks: it requires multiple manual wiring operations and point-by-point resistance testing for each relay, resulting in extremely low efficiency and hindering batch testing; the reliance on manual operation makes improper multimeter use prone to misjudgments or missed measurements, leading to low accuracy; and operator unfamiliarity with the relay's internal structure or incorrect pin connections can cause relay burnout and product damage. Therefore, it is necessary to develop a dedicated electromagnetic relay electrical performance testing system. This system should allow for real-time observation of the relay's resistance data under different operating states, enabling efficient and accurate performance assessment to meet the urgent needs of actual production and maintenance support. Summary of the Invention

[0004] To address the problems of low efficiency and inability to perform batch testing for individual relays due to the need for multiple manual wiring operations and point-by-point resistance testing, as well as the reliance on manual operation and the potential for misjudgment or omission of resistance values ​​due to improper use of multimeters, resulting in low testing accuracy, this invention proposes an electrical performance testing device and method for electromagnetic relays.

[0005] An electrical performance testing device for an electromagnetic relay, the test object being an electric relay, includes a power supply, a power interface cooperating with the power supply, a power switch, and a test circuit board. The test circuit board is provided with an electromagnetic relay test interface cooperating with the power switch, a five-way switch and a changeover switch cooperating with the electromagnetic relay test interface, a multimeter test interface cooperating with the changeover switch, and a multimeter.

[0006] A test method for an electrical performance testing device for an electromagnetic relay, the specific steps of which are as follows: S1. Connect the test system: Adjust the power supply to +27V, connect the positive and negative terminals to the corresponding interfaces of the test circuit board, set the multimeter to the ohm range and connect it to the positive and negative terminals of the test circuit board, turn off the power switch of the test board, and install the electric relay onto the test circuit board. S2. Performance test in the non-powered state: When the electromagnetic relay is in the non-powered state, pins 1 and 2 are connected, and pins 4 and 5 are connected; pins 2 and 3 are disconnected, and pins 5 and 6 are disconnected. Based on the circuit structure, by adjusting the switch 6 to connect pins 1 and 2, the continuity between pins 5 and 4, and pins 6 of the relay can be tested separately by adjusting the five-way switch. By adjusting the switch to connect pins 2 and 3, the continuity between pins 2 and 1, and pins 3 of the relay can be tested separately by adjusting the five-way switch 5. S3. Performance Test under Power-On Condition: Close the power switch of the test circuit board. At this time, the electromagnetic coil of the electric relay is energized, and the internal contacts are attracted. Under the power-on condition, pins 1 and 2 are disconnected, and pins 4 and 5 are disconnected; pins 2 and 3 are connected, and pins 5 and 6 are connected. The continuity judgment criteria are the same as in the non-power-on state. Based on the circuit structure, adjust the switch to make pins 1 and 2 connected. By adjusting the five-way switch, the continuity relationship between pins 5 and 4 and pins 6 of the electric relay can be tested respectively. Adjust the switch to make pins 2 and 3 connected. By adjusting the five-way switch 5, the continuity relationship between pins 2 and 1 and pins 3 of the electric relay can be tested respectively. S4. Performance Judgment: Determine whether the electrical performance of the electromagnetic relay can meet the actual repair needs by judging whether the resistance values ​​between each pin meet the requirements in the energized and de-energized states.

[0007] The criteria for determining whether step S2 is not powered are as follows: if the multimeter shows a resistance value of less than 0.5Ω, the pins are connected; if the multimeter shows a resistance value of more than 500MΩ, the pins are disconnected.

[0008] The beneficial effects of this invention are: the integrated circuit board of this invention realizes automated and efficient testing of the electrical performance of electromagnetic relays. Compared with traditional testing methods, it significantly improves measurement accuracy, effectively shortens testing time, and solves the technical pain points of low accuracy and slow efficiency in traditional testing methods. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a schematic diagram of the electrical relay of the present invention; Figure 2 This is a schematic diagram of the electromagnetic relay test circuit board of the present invention; Figure 3 This is a schematic diagram of the electromagnetic relay testing system of the present invention; Figure 4 This is a schematic diagram of the process structure of the present invention; Attached reference numerals: 1. Power supply; 2. Power interface; 3. Power switch; 4. Electromagnetic relay test interface; 5. Five-way switch; 6. Changeover switch; 7. Multimeter test interface; 8. Multimeter. Detailed Implementation

[0011] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below.

[0012] like Figures 1 to 4 As shown, an electrical performance testing device for an electromagnetic relay is disclosed. The test object is an electric relay, including a power supply 1, a power interface 2 that cooperates with the power supply 1, a power switch 3, and a test circuit board. The test circuit board is provided with an electromagnetic relay test interface 4 that cooperates with the power switch 3, a five-way switch 5 and a changeover switch 6 that cooperate with the electromagnetic relay test interface 4, a multimeter test interface 7 that cooperates with the changeover switch 6, and a multimeter 8. The integrated circuit board of this invention realizes automated and efficient testing of the electrical performance of electromagnetic relays. Compared with traditional testing methods, it significantly improves measurement accuracy, effectively shortens testing time, and solves the technical pain points of low accuracy and slow efficiency in traditional testing methods.

[0013] The electric relay has six sets of pins: pin 1, pin 2, pin 3, pin 4, pin 5, and pin 6.

[0014] When the electromagnetic relay is in a de-energized state, pins 1 and 2 are connected, and pins 4 and 5 are connected; pins 2 and 3 are disconnected, and pins 5 and 6 are disconnected.

[0015] When the electromagnetic relay is energized, pins 1 and 2 are disconnected, and pins 4 and 5 are disconnected; pins 2 and 3 are connected, and pins 5 and 6 are connected.

[0016] The power supply 1 has a voltage of 27V. The combination of power supply 1 and multimeter 8 on the test circuit board can efficiently and accurately complete the testing of various electrical performance indicators of electromagnetic relays.

[0017] A test method for an electrical performance testing device for an electromagnetic relay, the specific steps of which are as follows: S1. Connect the test system: Adjust the power supply 1 to +27V, connect the positive and negative terminals to the corresponding interfaces of the test circuit board, set the multimeter 8 to the ohm range and connect it to the positive and negative terminals of the test circuit board, turn off the power switch 3 of the test board, and install the electric relay onto the test circuit board. S2. Performance test under non-powered state: When the electromagnetic relay is in a non-powered state, pins 1 and 2 are connected, and pins 4 and 5 are connected; pins 2 and 3 are disconnected, and pins 5 and 6 are disconnected. Based on the circuit structure, by adjusting the switch 6 to enable pins 1 and 2, the continuity between pins 5 and 4 and pins 6 of the electric relay can be tested by adjusting the five-way switch 5. By adjusting the switch 6 to enable pins 2 and 3, the continuity between pins 2 and 1 and pins 3 of the electric relay can be tested by adjusting the five-way switch 5. S3. Performance test under power-on state: Close the power switch 3 on the test circuit board. At this time, the electromagnetic coil of the electric relay is energized, and the internal contacts are attracted. Under the power-on state, pins 1 and 2 are disconnected, and pins 4 and 5 are disconnected; pins 2 and 3 are connected, and pins 5 and 6 are connected. The continuity judgment criteria are the same as in the non-power-on state. Based on the circuit structure, adjust the switch 6 to make pins 1 and 2 connected. By adjusting the five-way switch 5, the continuity relationship between pins 5 and 4 and pins 6 of the electric relay can be tested respectively. Adjust the switch 6 to make pins 2 and 3 connected. By adjusting the five-way switch 5, the continuity relationship between pins 2 and 1 and pins 3 of the electric relay can be tested respectively. S4. Performance Judgment: Determine whether the electrical performance of the electromagnetic relay can meet the actual repair needs by judging whether the resistance values ​​between each pin meet the requirements in the energized and de-energized states.

[0018] The criteria for determining whether step S2 is not powered are as follows: if the multimeter 8 shows a resistance value of less than 0.5Ω, the pins are connected; if the multimeter 8 shows a resistance value of more than 500MΩ, the pins are disconnected.

[0019] This invention combines a power supply 1 and a multimeter 8 on a designed test circuit board to accurately test the electrical performance of electromagnetic relays, significantly improving measurement efficiency and testing accuracy. At the same time, it avoids product damage caused by human error, achieving efficient, accurate, and safe relay electrical performance testing.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely prisms of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An electrical performance testing device for an electromagnetic relay, comprising a power supply (1), a power interface (2) cooperating with the power supply (1), and a power switch (3), characterized in that: It also includes a test circuit board, which is provided with an electromagnetic relay test interface (4) that cooperates with the power switch (3), a five-way switch (5) and a changeover switch (6) that cooperate with the electromagnetic relay test interface (4), a multimeter test interface (7) that cooperates with the changeover switch (6), and a multimeter (8).

2. The electrical performance testing device for an electromagnetic relay according to claim 1, characterized in that: The electric relay has six sets of pins: pin 1, pin 2, pin 3, pin 4, pin 5, and pin 6.

3. The electrical performance testing device for an electromagnetic relay according to claim 1, characterized in that: When the electromagnetic relay is in a de-energized state, pins 1 and 2 are connected, and pins 4 and 5 are connected; pins 2 and 3 are disconnected, and pins 5 and 6 are disconnected.

4. The electrical performance testing device for an electromagnetic relay according to claim 1, characterized in that: When the electromagnetic relay is energized, pins 1 and 2 are disconnected, and pins 4 and 5 are disconnected; pins 2 and 3 are connected, and pins 5 and 6 are connected.

5. The electrical performance testing device for an electromagnetic relay according to claim 1, characterized in that: The voltage of the power supply (1) is 27V.

6. A testing method using the electrical performance testing device for an electromagnetic relay according to any one of claims 1 to 5, characterized in that: The specific steps of the method are as follows: S1. Connect the test system: Adjust the power supply (1) to +27V, connect the positive and negative terminals to the corresponding interfaces of the test circuit board, set the multimeter (8) to the ohm range and connect it to the positive and negative terminals of the test circuit board, disconnect the power switch (3) of the test board, and install the electric relay on the test circuit board. S2. Performance test under non-powered state: When the electromagnetic relay is in the non-powered state, pin 1 and pin 2 are connected, and pin 4 and pin 5 are connected; pin 2 and pin 3 are disconnected, and pin 5 and pin 6 are disconnected; combined with the circuit structure, the switch (6) is adjusted to the point where pin 1 and pin 2 are connected, and the five-way switch (5) is adjusted to test the connection relationship between pin 5 and pin 4 and pin 6 of the electric relay respectively; the switch (6) is adjusted to the point where pin 2 and pin 3 are connected, and the five-way switch (5) is adjusted to test the connection relationship between pin 2 and pin 1 and pin 3 of the electric relay respectively. S3. Performance test under power-on state: Close the power switch (3) of the test circuit board. At this time, the electromagnetic coil of the electric relay is energized and the internal contacts are attracted. Under the power-on state, pin 1 is disconnected from pin 2 and pin 4 is disconnected from pin 5; pin 2 is connected to pin 3 and pin 5 is connected to pin 6. The connection judgment standard is the same as that under the non-power-on state. Combined with the circuit structure, adjust the switch (6) to make pin 1 and pin 2 connected. By adjusting the five-way switch (5), the connection relationship between pin 5 and pin 4 and pin 6 of the electric relay can be tested respectively. Adjust the switch (6) to make pin 2 and pin 3 connected. By adjusting the five-way switch (5), the connection relationship between pin 2 and pin 1 and pin 3 of the electric relay can be tested respectively. S4. Performance Judgment: Determine whether the electrical performance of the electromagnetic relay can meet the actual repair needs by judging whether the resistance values ​​between each pin meet the requirements in the energized and de-energized states.

7. The test method for the electrical performance testing device of an electromagnetic relay according to claim 6, characterized in that: The criteria for determining whether step S2 is not powered are: if the multimeter (8) shows a resistance value of less than 0.5Ω, that is, the pins are connected; if the multimeter (8) shows a resistance value of more than 500MΩ, that is, the pins are disconnected.

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