CN116679195A - Relay calibration circuit and relay calibrator - Google Patents

Abstract

The invention provides a relay calibration circuit and a relay calibrator, which solves the problem in the prior art that the relay cannot be well calibrated safely and accurately. Wherein, the relay calibration circuit includes a DC calibration power supply, an inverter circuit, a DC test circuit and an AC test circuit; the DC calibration power supply is connected to the AC test circuit through the inverter circuit; and the DC calibration power supply and the DC test circuit Connection; DC calibration power supply, used to provide DC test power for the DC test circuit, and provide AC test power for the AC test circuit through the inverter circuit; DC test circuit, used to connect to the DC relay to be verified, and use The DC test power supply performs performance verification on the DC relay to be verified; the AC test circuit is used to connect to the AC relay to be verified, and uses the AC test power supply to perform performance verification on the AC relay to be verified.

Description

Relay calibration circuit and relay calibrator

technical field

The invention relates to the technical field of electrical equipment state detection, in particular to a relay calibration circuit and a relay calibrator.

Background technique

Circuit breaker equipment is very common in the power system and plays a very important role. Generally, a large part of the failures in the power system are caused by the failure of the circuit breaker equipment in the power system. Among them, circuit breaker equipment failures are mainly divided into electrical failures and mechanical failures. Most of the electrical faults of circuit breaker equipment are caused by the damage of secondary components. As a secondary component widely used in the secondary circuit of circuit breaker equipment, relays can break the circuit breaker equipment under the action of control current. Control, and in the secondary circuit of the circuit breaker equipment, the more frequently the relay operates under the action of the control current, the greater the probability of failure of the relay, and the failure probability of the breaker equipment caused by the failure of the relay will also greatly increase. Therefore, whether the working performance of the relay is good or not is directly related to whether the circuit breaker equipment can operate normally, which in turn affects the safe and stable operation of the power system. In addition, in the daily maintenance and defect elimination work, circuit breaker failure defects often occur due to abnormal relays. Therefore, it is of great significance to strengthen the detection and verification of the performance of the relay.

In the prior art, the technical method for detecting the performance of the relay is usually relatively simple, that is, the voltage or resistance value at both ends of the relay is measured with a multimeter voltage or resistance range, and the conduction performance of the relay is verified based on the measured voltage or resistance value . Or, the performance of the relay is verified by artificially applying mechanical external force to the relay to make the relay act, and logically judging the nodes of the relay components. However, in the two methods of the prior art, it is difficult for the former to judge whether the actual operation performance of the relay is good or bad, and because the circuit is in a charged state when the relay voltage is measured, there is a potential safety hazard of electric shock for personnel during the detection and calibration process, and it is also possible Equipment damage due to human error. The latter uses external force to make the relay act and the relay itself is electrified and self-absorbing, which are two completely different forms of logic. Using mechanical external force to make the relay act ignores the problems of assembly mechanical resistance and mechanical jamming in the actual operation of the relay. That is to say, neither of the two verification methods in the prior art can perform safe and accurate verification of the relay well.

Contents of the invention

The embodiments of the present invention are dedicated to providing a relay detection circuit and a relay calibrator, so as to solve the problem that the relay cannot be well calibrated safely and accurately in the prior art.

In the first aspect, the present invention provides a relay detection circuit. The relay verification circuit includes a DC verification power supply, an inverter circuit, a DC test circuit and an AC test circuit; the DC verification power supply is connected to the AC test circuit through the inverter circuit. The circuit is connected; and the DC calibration power supply is connected to the DC test circuit;

The DC calibration power supply is used to provide DC test power for the DC test circuit, and provide AC test power for the AC test circuit through the inverter circuit;

The DC test circuit is used to connect the DC relay to be verified, and use the DC test power supply to perform performance verification of the DC relay to be verified;

The AC test circuit is used to connect the AC relay to be verified, and perform performance verification on the AC relay to be verified by using the AC test power supply.

In the second aspect, the present invention provides a relay verification method, which is applied to the relay verification circuit described in the first aspect. The relay verification circuit includes a DC verification power supply, an inverter circuit, a DC test circuit and an AC test circuit. circuit; the DC calibration power supply is connected to the AC test circuit via the inverter circuit; and the DC calibration power supply is connected to the DC test circuit; the method includes:

Connecting the DC relay to be verified into the DC test circuit, and using the DC test circuit to perform performance verification on the DC relay to be verified;

An AC relay to be verified is connected to the AC test circuit, and performance verification is performed on the AC relay to be verified by using the AC test circuit.

In a third aspect, the present invention provides a relay verification device, which includes:

A DC relay performance verification module, configured to connect the DC relay to be verified in the DC test circuit, and use the DC test circuit to perform performance verification on the DC relay to be verified;

The AC relay performance verification module is used to connect the AC relay to be verified in the AC test circuit, and use the AC test circuit to perform performance verification on the AC relay to be verified.

In a fourth aspect, the present invention provides an electronic device, which includes: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete communication with each other through the communication bus;

memory for storing computer programs;

The processor is configured to implement the steps of the relay verification method described in the second aspect when executing the program stored in the memory.

In a fifth aspect, the present invention provides a relay calibrator, which is provided with the relay calibrating circuit as described in the first aspect.

Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following advantages:

The relay verification circuit provided by the embodiment of the present invention mainly includes a DC verification power supply, an inverter circuit, a DC test circuit and an AC test circuit. After the DC test circuit is connected to the DC relay to be verified, the DC verification power supply is used The provided DC test power supply performs performance verification on the connected DC relay to be verified, and after the AC test circuit is connected to the AC relay to be verified, it uses the AC test power provided by the DC verification power supply through the inverter circuit. Perform performance verification on the connected AC relay to be verified. In this way, when the AC and DC relay to be verified is separated from the power supply system of the breaker device where it is located, that is, when it is separated from the power supply system when it is working normally in the breaker device, the inside of the relay verification circuit can be used The DC verification power supply performs performance verification on the AC and DC relays to be verified, which can better avoid the potential safety hazards of personnel electric shock in the prior art, short-circuit damage to equipment due to human error, and ignore the actual operation of the AC and DC relays to be verified. The problem of mechanical resistance and mechanical jamming in the middle assembly improves the safety and accuracy of the calibration of the AC and DC relays to be calibrated, and achieves better calibration results.

Description of drawings

Fig. 1 is a schematic diagram 1 of a relay verification circuit provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram 2 of a relay verification circuit provided by an embodiment of the present invention;

Fig. 3 is a schematic diagram three of a relay verification circuit provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of the principle of the DC calibration power supply provided by the embodiment of the present invention;

FIG. 5 is a schematic diagram of the principle of the AC calibration power supply provided by the embodiment of the present invention;

FIG. 6 is a schematic flow chart of a relay verification method provided by an embodiment of the present invention;

7 is a schematic diagram of a relay verification device provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to solve the problem in the prior art that the relay cannot be verified safely and accurately, the present invention provides a relay verification circuit, as shown in Figure 1, the relay verification circuit includes a DC verification power supply, The inverter circuit, the DC test circuit and the AC test circuit, and the DC calibration power supply is connected to the AC test circuit through the inverter circuit, and the DC calibration power supply is connected to the DC test circuit.

Among them, the DC calibration power supply is used to provide DC test power for the DC test circuit, and provide AC test power for the AC test circuit through the inverter circuit.

The DC test circuit is used for connecting the DC relay to be verified, and performing performance verification of the DC relay to be verified by using the above-mentioned DC test power supply.

The AC test circuit is used to connect to the AC relay to be verified, and perform performance verification on the AC relay to be verified by using the above-mentioned AC test power supply.

That is to say, in the relay calibration circuit, the DC calibration power supply provides AC and DC test power, which respectively supplies power to the AC and DC test circuits, so that the AC and DC test circuits can operate under the AC and DC test power provided by the DC calibration power supply. , and perform performance verification on the AC and DC relays to be verified that are respectively connected to the AC and DC test circuits.

Exemplarily, the DC calibration power supply may be, for example, a storage battery.

Specifically, power off the AC/DC relays to be verified in the circuit breaker equipment that require performance verification, and then respectively connect the powered-off AC/DC relays to be verified to the AC/DC test circuit of the relay verification circuit.

Wherein, the AC-DC relay to be verified that needs to be verified in the circuit breaker equipment can be directly removed from the circuit breaker device, or it can be installed in the circuit breaker. The equipment is in a power-off state, that is, the power supply system of the equipment does not use the circuit breaker.

Since the relay verification circuit has its own power supply system, that is, the DC verification power supply, which supplies power to the AC and DC test circuit, and supports the AC and DC test circuit to complete the performance detection of the AC and DC relay to be verified, compared with the prior art Relying on the power supply system of the AC-DC relay to be verified for normal operation to perform performance verification, the present invention can better avoid the occurrence of safety accidents that endanger people and equipment due to electric shocks and misoperations of personnel, and improve the performance of the relay to be tested. The safety of the detection and verification. In addition, compared with the method of applying external force to make the relay operate in the prior art, it is also possible to better avoid ignoring and reducing the assembly mechanical resistance and mechanical jamming in the actual operation of the AC-DC relay to be verified under the action of the DC calibration power supply. To solve the problem, improve the accuracy of the performance verification of the AC and DC relays to be verified.

In addition, the relay verification circuit can not only perform performance verification on the connected AC relay to be verified through the AC test circuit, but also perform performance verification on the connected DC relay to be verified through the DC test circuit, that is, the relay The verification circuit is a common relay verification circuit for AC and DC, which has good versatility in the verification of the AC and DC relays to be verified, and can better improve the verification efficiency of the AC and DC relays to be verified.

In a possible embodiment, when verifying the performance of the AC-DC relay to be verified, that is, to detect whether the AC-DC relay to be verified is good or not, we start from two aspects, one is to apply pressure, that is, apply the corresponding AC-DC power supply ( Or voltage, current) to detect the conduction performance of the AC-DC relay to be verified, and the second is to apply pressure to apply the corresponding AC-DC power supply (or voltage, current) to detect the action performance of the AC-DC relay to be verified, that is Suction ability.

The DC test circuit includes a DC relay access station and a DC test circuit indicator light, the DC calibration power supply is connected to the DC test circuit indicator light, and the DC test circuit indicator light is connected to the DC relay access station.

Among them, the DC relay access station is used to connect to the DC relay to be verified, and use the DC test power supply to control the DC relay to be verified to be in a working state.

The indicator light of the DC test circuit is used to indicate the quality of the conduction performance of the DC relay to be verified.

The DC relay to be verified is used to indicate the quality of the DC relay to be verified, that is, the operating performance of itself, through its own action.

Specifically, the DC relay is connected to the DC relay to be verified in the station, and the DC test power supply is used to control the operation of the DC relay to be verified. At this time, whether the indicator light of the DC test circuit is normally on indicates whether the conduction performance of the DC relay to be verified is good (or excellent).

More specifically, the indicator light of the DC test loop includes a DC relay coil indicator light. The coil of the DC relay to be verified is connected to the DC relay access station, that is, the DC relay access station is connected to the coil of the DC relay to be verified, and the DC test power supply is used to energize the coil of the DC relay to be verified. At this time, if the DC relay coil indicator light is normally on, it indicates that the conduction performance of the coil of the DC relay to be verified is good, otherwise, that is, the DC relay coil indicator light is not normally on, it indicates that the DC relay to be verified The conduction performance of the coil is not good.

Alternatively, the DC test loop indicator light includes a DC relay normally closed contact indicator light. The normally closed contact of the DC relay to be verified is connected to the DC relay access station, that is, when the DC relay access station is connected to the normally closed contact of the DC relay to be verified, the DC test power supply is used for the DC relay to be verified. The normally closed contact is energized. At this time, if the indicator light of the normally closed contact of the DC relay is normally on, it indicates that the conduction performance of the normally closed contact of the DC relay to be verified is good (or excellent), otherwise, the indicator light of the normally closed contact of the DC relay If it does not light up normally, it indicates that the conduction performance of the normally closed contact of the DC relay to be verified is not good.

Alternatively, the DC test loop indicator light includes a DC relay normally open contact indicator light. The normally open contact of the DC relay to be verified is connected to the DC relay access station, that is, the DC relay access station is connected to the normally open contact of the DC relay to be verified, and the DC test power is used as the DC relay to be verified. The normally open contact is energized. At this time, if the normally open contact indicator light of the DC relay is not normally on, but after the coil of the DC relay to be verified is energized, the normally open contact indicator light of the DC relay is normally on, indicating that the DC relay to be verified The conduction performance of the normally open contact is good (or excellent). Conversely, if the normally open contact indicator light of the DC relay to be verified is not normally on after the coil of the DC relay to be verified is energized, it indicates that the conduction performance of the normally open contact of the DC relay to be verified is not good.

Among them, the DC relay coil indicator light, the DC relay normally closed contact indicator light and the DC relay normally open contact indicator light in the DC test circuit indicator light have a corresponding relationship with the DC relay to be verified.

Correspondingly, the DC relay is connected to the station to be connected to the DC relay to be verified, and the DC test power supply is used to control the operation of the DC relay to be verified. At this time, if the DC relay to be verified makes a normal pull-in action, it indicates that the operating performance of the DC relay to be verified is good; The operating performance of the relay is poor. In this way, the working state of the DC relay coil and contacts to be verified is simulated by the verification power supply of the relay verification circuit, and the flashing of the indicator light of the DC test circuit indicates whether the indicator light is normally on or not in normal state but After the relay coil is energized, the indicator light is on, and whether the DC relay to be verified makes a pull-in action to judge the performance of the relay node, which can realize the DC relay coil and contact conduction performance to be verified under the power-on environment and the DC relay to be verified. The detection of node action performance finally makes a comprehensive detection of the performance of the DC relay to be verified.

It can be understood that when the DC relay to be verified is normally closed, the normally open contact of the DC relay to be verified is switched from an open state to a closed state, and the normally closed contact of the DC relay to be verified is switched from a closed state to a closed state. Switch to disconnected state. When the normally open contact of the DC relay to be verified is closed, the corresponding normally open contact indicator of the DC relay is on, and when the normally closed contact of the DC relay to be verified is disconnected, the corresponding normally closed contact indicator of the DC relay is on. off. Therefore, after the coil of the DC relay to be verified is energized, whether the normally open contact indicator of the DC relay and the normally closed contact indicator of the DC relay in the indicator light of the DC test circuit are on can also indicate to a certain extent Check whether the action performance of the DC relay is good.

Among them, after the coil of the DC relay to be verified is energized, the corresponding normally open contact indicator of the DC relay goes out, and the corresponding DC relay normally closed contact indicator lights up, indicating that the DC relay to be verified has made a pull-in Action, the action performance of the DC relay to be verified is relatively good.

In combination with the above content, it can be understood that there is at least one indicator light for the DC test circuit, and at least one DC relay access station. There is a one-to-one correspondence between the at least one DC test circuit indicator light and the at least one DC relay access station. Each DC test circuit indicator light is connected in series with its corresponding DC relay access station, and connected in parallel with other DC test circuits and DC relay access stations. That is to say, the same DC test circuit can simultaneously perform performance checks on various parts of the same DC relay to be checked, or perform performance checks on multiple DC relays to be checked at the same time.

Similarly, the AC test circuit includes an AC relay access station and an AC test circuit indicator light, the inverter circuit is connected to the AC test circuit indicator light, and the AC test circuit indicator light is connected to the AC relay access station.

Among them, the AC relay access station is used to connect to the AC relay to be verified, and use the AC test power provided by the verification power supply to control the AC relay to be verified to be in a working state.

The indicator light of the AC test circuit is used to indicate the quality of the conduction performance of the AC relay to be verified;

The AC relay to be verified is used to indicate the quality of the action performance of the AC relay to be verified through its own action.

Specifically, an AC relay to be verified is connected to the AC relay access station, and an AC test power supply is used to control the operation of the AC relay to be verified. At this time, whether the indicator light of the AC test circuit is normally on indicates whether the conduction performance of the AC relay to be verified is good.

More specifically, the AC test loop indicator light includes an AC coil indicator light. The AC relay access station is connected to the coil of the AC relay to be verified, that is, the AC relay access station is connected to the coil of the AC relay to be verified, and the AC test power supply is used to energize the coil of the AC relay to be verified. At this time, if the indicator light of the AC coil is normally on, it indicates that the conduction performance of the coil of the AC relay to be verified is good; poor conduction performance.

Alternatively, the AC test loop indicator light includes an AC relay normally closed contact indicator light. The AC relay access station is connected to the normally closed contact of the AC relay to be verified, that is, when the AC relay access station is connected to the normally closed contact of the AC relay to be verified, the AC test power is used as the AC relay to be verified. The normally closed contact is energized. At this time, if the indicator light of the normally closed contact of the AC relay is normally on, it indicates that the conduction performance of the normally closed contact of the AC relay to be verified is good (or excellent), otherwise, it indicates that the AC relay to be verified The conduction performance of the normally closed contact is not good.

Alternatively, the DC test loop indicator light includes a DC relay normally open contact indicator light. The normally open contact of the AC relay to be verified is connected to the AC relay access station, that is, the AC relay access station is connected to the normally open contact of the DC relay to be verified, and the AC test power is used as the AC relay to be verified. The normally closed contact is energized. At this time, if the indicator light of the normally open contact of the AC relay is not normally on, but after the coil of the AC relay to be verified is energized, the indicator light of the normally open contact of the AC relay is normally on, indicating that the AC relay to be verified The conduction performance of the normally open contact is good (or excellent). Conversely, if the normally open contact indicator light of the AC relay to be verified is not normally on after the coil of the AC relay to be verified is energized, it indicates that the conduction performance of the normally open contact of the AC relay to be verified is not good.

Among them, the AC relay coil indicator light, the AC relay normally closed contact indicator light, and the AC relay normally open contact indicator light in the AC test loop indicator light have a corresponding relationship with the AC relay to be verified.

Correspondingly, the AC relay is connected to the AC relay to be verified in the station, and the AC test power supply is used to control the operation of the AC relay to be verified. At this time, if the AC relay to be verified makes a normal pull-in action, it indicates that the AC relay to be verified has a good operating performance; The operating performance of the relay is poor. In this case, the working state of the AC relay coil and contacts to be verified is simulated by the verification power supply of the relay verification circuit, and the flashing of the indicator light of the AC test circuit indicates whether the indicator light is normally on or not in normal state but After the relay coil is energized, the indicator light is on, and whether the AC relay to be verified makes a pull-in action to judge the performance of the relay node, which can realize the AC relay coil and contact conduction performance to be verified under the power-on environment and the AC relay to be verified The detection of node action performance finally makes a comprehensive detection of the performance of the AC relay to be verified.

It can be understood that when the AC relay to be verified is normally closed, the normally open contact of the AC relay to be verified is switched from an open state to a closed state, and the normally closed contact of the AC relay to be verified is switched from a closed state to a closed state. Switch to disconnected state. When the normally open contact of the AC relay to be verified is closed, the corresponding indicator light of the normally open contact of the AC relay lights up; when the normally closed contact of the AC relay to be verified is disconnected, the corresponding indicator light of the normally closed contact of the AC relay off. Therefore, after the coil of the AC relay to be verified is energized, whether the normally open contact indicator of the AC relay and the normally closed contact indicator of the AC relay in the indicator light of the AC test circuit are on can also indicate to a certain extent Check whether the action performance of the AC relay is good.

Among them, after the coil of the AC relay to be verified is energized, the corresponding indicator light of the normally open contact of the AC relay goes out, and the corresponding indicator light of the normally closed contact of the AC relay lights up, indicating that the AC relay to be verified has made a pull-in Action, the action performance of the AC relay to be verified is relatively good.

In combination with the above content, it can be seen that there is at least one AC test loop indicator light, and at least one AC relay access station. There is a one-to-one correspondence between the at least one AC test loop indicator light and the at least one AC relay access station. Each AC test circuit indicator light is connected in series with its corresponding AC relay access station, and connected in parallel with other AC test circuits and AC relay access stations. That is to say, the same AC test circuit can simultaneously perform performance checks on various parts of the same AC relay to be checked, or perform performance checks on multiple AC relays to be checked at the same time.

In addition, the quality of the conduction performance of the AC-DC relay to be verified is the quality of the conduction performance of the electromagnetic coil and various contacts in the AC-DC relay to be verified. On the other hand, after the AC-DC relay to be verified is connected to the corresponding AC-DC test circuit and energized, each node (or contact) in the normal AC-DC relay to be verified will change from the non-adhesive state to Therefore, based on the characteristics that the AC-DC relay to be verified will make a pull-in action after the corresponding AC-DC test power is applied to the AC-DC relay to be verified after power-on, the action performance of the AC-DC relay to be verified Calibration can achieve a better calibration effect.

In a possible embodiment, the DC test circuit includes a DC button switch, and the DC button switch is used to control whether the DC test circuit works.

Specifically, if the DC push button switch is in the closed state, the DC test circuit where the DC push button switch is located is in the working state; correspondingly, if the DC push button switch is in the disconnected state, the DC test circuit where the DC push button switch is located is in the non-working state.

Exemplarily, the DC push button switch may be a self-locking push button switch, or a self-locking push button switch with light, etc.

Similarly, the AC test circuit includes an AC button switch, and the AC button switch is used to control whether the AC test circuit works.

Specifically, if the AC push button switch is in the closed state, the AC test circuit where the AC push button switch is located is in a working state; state.

Exemplarily, the AC push button switch may be a self-locking push button switch, or a self-locking push button switch with light, etc.

In this way, based on the type of the relay to be verified, that is, whether the relay to be verified is an AC relay to be verified or a DC relay to be verified, the corresponding AC/DC button switch in the AC/DC test circuit can be controlled to be closed or disconnected. Whether the AC and DC test circuit is working, for example, if the relay to be verified is a DC relay to be verified, the AC button switch in the AC test circuit can be disconnected, and the DC button switch in the DC test circuit can be closed to realize the verification Targeted calibration of relays avoids potential safety hazards or circuit damage caused by using inappropriate test circuits to calibrate relays to be calibrated, and reduces waste of resources.

In a possible embodiment, the relay verification circuit further includes a rectification circuit and an interface for an external verification power supply, and the DC test circuit is connected to the AC verification power supply outside the relay verification circuit through the rectification circuit and the external verification power interface. That is to say, the external verification power interface is used to connect the external AC verification power of the relay verification circuit.

In addition, the above-mentioned AC calibration power supply is used to replace the DC calibration power supply inside the relay calibration circuit, to provide AC test power for the AC test circuit, and to provide DC test power for the DC test circuit through the rectifier circuit.

In this way, even if the DC calibration power supply inside the relay calibration circuit fails, or the branch circuit where the DC calibration power supply is located fails, other replacement power supplies, that is, the relay calibration connected to the external calibration power supply interface can also be used. The AC calibration power supply outside the circuit supplies power to the AC and DC test circuit, and realizes the calibration of the AC and DC relays connected to the AC and DC test circuit to be verified.

Exemplarily, the schematic diagram of the relay verification circuit can be shown in Figure 2, the relay verification circuit includes a rectifier circuit, a DC test circuit, a DC verification power supply, an inverter circuit, an AC test circuit and an external verification power supply interface, wherein , the external calibration power interface is used to connect the external AC calibration power supply of the relay calibration circuit.

Specifically, the relay verification circuit also includes an AC leakage protector and a DC leakage protector. The AC leakage protector is located between the external calibration power supply interface and the AC test circuit, and the DC leakage protector is located between the DC calibration power supply and the DC test circuit.

Among them, the AC leakage protector is used to control the connection between the external calibration power supply interface and the AC test circuit, and the DC leakage protector is used to control the connection between the DC calibration power supply and the DC test circuit. That is to say, the AC leakage protector and the DC leakage protector work together to control the verification power supply used to provide the AC and DC test power for the verification of the AC and DC relays to be verified, that is, the power supply of the control relay verification circuit is the The DC calibration power supply inside the circuit, or the power supply of the control relay calibration circuit is the AC calibration power supply outside the circuit.

When the AC leakage protector is closed and the DC leakage protector is disconnected, the AC calibration power supply connected to the external calibration power supply interface is used to replace the DC calibration power supply, to provide AC test power for the AC test circuit, and through the rectification circuit for DC The test circuit provides DC test power.

Correspondingly, when the AC leakage protector is disconnected and the DC leakage protector is closed, the DC calibration power supply is used to provide AC test power for the AC test circuit, and to provide DC test power for the DC test circuit through the rectification circuit.

It can be understood that the replacement of the DC calibration power supply by the AC calibration power supply is not limited to the disconnection of the DC leakage protector mentioned here, it may also be the DC calibration power supply or the branch circuit where the DC calibration power supply is located. The branch circuit where the DC verification power supply is located is disconnected due to a fault.

Of course, in addition to controlling the power supply conversion of the AC-DC relay through its opening or closing, the AC-DC leakage protector can also control the connection between the external calibration power interface and the AC test circuit when a leakage fault occurs in the relay calibration circuit. The connection between the DC calibration power supply and the DC test circuit is used to protect the relay calibration circuit and prevent personnel from getting an electric shock.

Exemplarily, a schematic diagram of a relay verification circuit may be shown in FIG. 3 . The external calibration power interface in the relay calibration circuit is connected to the AC calibration power supply AC, and the two ends of the external calibration power interface are respectively connected to the AC leakage protector and the rectification circuit. The AC leakage protector is connected with the AC test circuit, and the rectification system is connected with the DC test circuit. The DC test circuit includes a DC relay access station, a DC test circuit indicator light, and a DC push button switch (take the self-locking push button switch with light as an example). Among them, the DC relay access station a is connected to the indicator light A of the DC test circuit, and the DC relay access station b is connected to the indicator light B of the DC test circuit. The AC test circuit includes an AC relay access station, an AC test circuit indicator light, and an AC push button switch (take the self-locking push button switch with light as an example). Among them, the AC relay access station c is connected to the indicator lamp C of the AC test circuit, and the AC relay access station d is connected to the indicator lamp D of the AC test circuit. In addition, the DC test circuit is also connected to the DC calibration power supply through the DC leakage protector, and the DC calibration power supply is connected to the AC test circuit through the inverter circuit.

In a possible embodiment, the DC test circuit further includes a DC adjustable analog resistor and the like. That is to say, the DC test circuit includes a DC push button switch, a DC adjustable analog resistor, a DC relay access station, and a DC test circuit indicator light.

Correspondingly, the AC test circuit also includes an AC adjustable analog resistor and the like. That is to say, the AC test circuit includes an AC push button switch, an AC adjustable analog resistor, an AC relay access station, and an AC test circuit indicator light.

In a possible embodiment, the DC relay access station of the DC test circuit includes a platform for connecting the DC relay to be verified to the DC test circuit, a driving line and a test line. Wherein, the test line may be, for example, a multi-interface portable plug-in node test line.

When the DC relay to be verified is connected to the DC test circuit, the DC relay to be verified is placed on the platform that is connected to the DC test circuit with the DC relay to be verified, and the DC relay is connected to the DC test circuit on the platform. The driving line of the Taichung is connected to the driving end of the DC relay to be verified, and the test line connecting the DC relay to the Taichung is connected to both ends of the control node of the DC relay to be verified. Subsequently, the driving power of the relay verification circuit, that is, the DC verification power of the verification circuit itself or the AC verification power connected to the verification circuit, can simulate the working state of the DC relay to be verified, and through the The performance of the DC relay to be verified can be judged by the flickering of the indicator light of the DC test circuit corresponding to the DC relay to be verified and the pull-in action of the DC relay to be verified. In this way, the relay verification circuit can realize the detection of the conduction performance of the coil and contact of the DC relay to be verified and the action performance of the DC relay node to be verified under the power-on environment, and finally make a comprehensive performance of the DC relay to be verified. detection.

Wherein, the control node can be the nodes at both ends of the coil of the relay or the normally open contact or the normally closed contact of the relay. Based on the difference of the relay nodes to be verified, the control nodes connected to the test lines are different.

Correspondingly, the AC relay access station of the AC test circuit includes a platform for connecting the AC relay to be verified to the AC test circuit, a driving line and a test line. Wherein, the test line may be, for example, a multi-interface portable plug-in node test line.

When the AC relay to be verified is connected to the AC test circuit, the AC relay to be verified is placed on a platform that is connected to the AC test circuit with the AC relay to be verified, and the AC relay is connected to the AC test circuit on the platform. The driving line of the Taichung is connected to the driving end of the AC relay to be verified, and the test line connecting the AC relay to the Taichung is connected to both ends of the control node of the AC relay to be verified. Subsequently, the driving power of the relay verification circuit, that is, the AC verification power of the verification circuit itself or the AC verification power connected to the verification circuit, can simulate the working state of the AC relay to be verified, and communicate with the verification circuit to be verified. Check the flickering of the indicator light of the AC test circuit corresponding to the AC relay and the pull-in action of the AC relay to be verified to judge the performance of the AC relay to be verified. In this way, the relay verification circuit can realize the detection of the conduction performance of the coil and contact of the AC relay to be verified and the action performance of the AC relay node to be verified under the power-on environment, and finally make a comprehensive detection of the performance of the AC relay to be verified .

Exemplarily, as shown in Figure 4, when the relay calibration circuit is powered by its internal DC calibration power supply,

The illuminated self-locking button switch SB ₁ in the DC test circuit is not closed, that is, SB ₁ is not pressed, no matter whether the conduction performance of the coil KA of the DC relay to be verified is good or not, the DC relay coil indicator light in the DC test circuit L ₁ does not light up properly. SB ₁ is closed (or turned on), that is, pressing SB ₁ , if the conduction performance of KA is good, then L ₁ is normally lit, and if the conduction performance of KA is not good, then L ₁ cannot be normally lit.

SB ₁ is not closed, and the indicator light L _{2 of} the normally open contact of the DC relay in the DC test circuit cannot be normally lit. When SB ₁ is closed, the normally open contact KA ₁ of the DC relay to be verified is closed. At this time, if the conduction performance of KA ₁ is good, then L ₂ lights up normally; if the conduction performance of KA ₁ is not good, then L ₂ does not light up normally.

SB ₁ is not closed. If the conduction performance of the normally closed contact KA ₂ of the DC relay to be verified is good, the DC relay normally closed contact indicator L ₃ in the DC test circuit is normally on. If the conduction of KA ₂ If the performance is not good, L ₃ cannot light up normally. When SB ₁ is closed, KA ₂ is disconnected, and L ₃ cannot be normally lit.

SB ₁ is not closed, the self-locking push button switch SB ₂ with light connected in series in the AC test circuit is closed, the DC power provided by the DC calibration power supply is converted by the inverter circuit into the coil KM of the AC relay to be verified Provide AC test power, at this time, the AC coil indicator light L ₄ in the AC test circuit cannot be normally lit. SB ₁ is closed, SB ₂ is normally closed, and the DC calibration power supply provides AC test power to KM through the inverter circuit. If the conduction performance of KM is good, then L ₄ lights up normally. If the conduction performance of KM is not good, then L 4 ₄ does not light up normally.

SB ₁ is not closed, and the indicator light L ₅ of the normally open contact of the AC relay in the AC test circuit cannot be normally lit. When SB ₁ is closed, the normally open contact KM ₁ of the AC relay to be verified is closed. At this time, if the conduction performance of KM ₁ is good, then L ₅ lights up normally; if the conduction performance of KM ₁ is not good, then L 5 ₅ does not light up normally.

SB ₁ is not closed. If the conduction performance of the normally closed contact KM ₂ of the AC relay to be verified is good, the indicator lamp L ₆ of the normally closed contact of the AC relay in the AC test circuit is normally on. If the conduction of KM ₂ If the performance is not good, L6 cannot light up normally. When SB ₁ is closed, KM ₂ is disconnected, and L ₆ cannot be normally lit.

Exemplarily, as shown in Figure 5, when the relay verification circuit is powered by an external AC verification power supply,

The illuminated self-locking button switch SB ₂ in the AC test circuit is not closed, that is, SB ₂ is not pressed, no matter whether the conduction performance of the coil KA of the AC relay to be verified is good or not, the AC coil indicator light L in the AC test circuit ₄ does not light up normally. SB ₂ is closed (or turned on), that is, when SB ₂ is pressed, if the conduction performance of KM is good, L ₄ is normally lit, and if the conduction performance of KM is not good, L ₄ cannot be normally lit.

SB ₂ is not closed, and the normally open contact indicator light L5 of the AC relay in the AC test circuit cannot light up normally. When SB ₂ is closed, the normally open contact KM ₁ of the AC relay to be verified is closed. At this time, if the conduction performance of KM ₁ is good, then L ₅ lights up normally; if the conduction performance of KM ₁ is not good, then L 5 ₅ does not light up normally.

SB ₂ is not closed. If the conduction performance of the normally closed contact KM ₂ of the AC relay to be verified is good, the indicator light L ₆ of the normally closed contact of the AC relay in the AC test circuit is normally on. If the conduction of KM ₂ If the performance is not good, L ₆ cannot light up normally. When SB ₂ is closed, KM ₂ is disconnected, and L ₆ cannot be normally lit.

SB ₂ is not closed, the self-locking button switch SB ₁ with light connected in series in the DC test circuit normally closes the contact, and the AC power provided by the AC calibration power supply is converted by the rectifier circuit to provide the coil KA of the DC relay to be calibrated. DC test power supply, at this time, the DC relay coil indicator light L ₁ in the DC test circuit cannot be normally lit. SB ₂ is closed, SB ₁ is normally closed, and the AC calibration power supply provides DC test power to KA through the rectification circuit. If the conduction performance of KA is good, then L ₁ is normally on. If the conduction performance of KA is not good, then L ₁ Does not light up normally.

SB ₂ is not closed, and the indicator light L _{2 of} the normally open contact of the DC relay in the DC test circuit cannot be normally lit. When SB ₂ is closed, the normally open contact KA ₁ of the DC relay to be verified is closed. At this time, if the conduction performance of KA ₁ is good, then L ₂ lights up normally; if the conduction performance of KA ₁ is not good, then L ₂ does not light up normally.

SB ₂ is not closed. If the conduction performance of the normally closed contact KA ₂ of the DC relay to be verified is good, the DC relay normally closed contact indicator L ₃ in the DC test circuit is normally on. If the conduction of KA ₂ If the performance is not good, L ₃ cannot light up normally. When SB ₂ is closed, KA ₂ is disconnected, and L ₃ cannot be normally lit.

An interlock is formed between the above SB ₁ and SB ₂ . If SB ₁ is closed, that is, when SB ₁ is pressed, the normally closed contact of SB ₁ is disconnected. At this time, the AC verification power supply cannot be used to supply power to the coil of the DC relay to be verified. Avoid using the AC and DC verification power supply at the same time. The DC relay to be verified is powered, causing damage to the DC relay to be verified. If SB ₂ is closed, that is, when SB ₂ is pressed, the normally closed contact of SB ₂ will be disconnected. At this time, the DC verification power supply cannot be used to supply power to the coil of the AC relay to be verified. Avoid using the AC and DC verification power supply at the same time. The AC relay to be verified is powered, causing damage to the AC relay to be verified.

In order to solve the problem in the prior art that the relay cannot be verified safely and accurately, the present invention also provides a relay verification method, which is applied to the relay verification circuit described in any of the above-mentioned embodiments, such as As shown in Figure 6, the relay verification method includes steps S601-S602:

Among them, taking the relay verification circuit shown in Figure 1 as an example, the relay verification circuit at least includes a DC verification power supply, an inverter circuit, a DC test circuit, and an AC test circuit. The test circuit is connected, and the DC calibration power supply is connected to the DC test circuit. For the detailed introduction of the relay verification circuit, please refer to the above content, and will not be repeated here.

S601. Connect the DC relay to be verified in the DC test circuit, and use the DC test circuit to perform performance verification on the DC relay to be verified.

S602. Connect the AC relay to be verified in the AC test circuit, and use the AC test circuit to perform performance verification on the AC relay to be verified.

For the introduction of the implementation of steps S601-S602, refer to the above content, and details are not repeated here.

In order to solve the problem that the relay cannot be verified safely and accurately in the prior art, the present invention also provides a relay verification device, as shown in Figure 7, the device includes a DC relay performance verification module 701 and AC relay performance verification module 702 .

in,

The DC relay performance verification module 701 is used to connect the DC relay to be verified in the DC test circuit, and use the DC test circuit to perform performance verification of the DC relay to be verified;

The AC relay performance verification module 702 is configured to connect the AC relay to be verified into the AC test circuit, and use the AC test circuit to perform performance verification of the AC relay to be verified.

As shown in Figure 8, the embodiment of the present application provides an electronic device, including a processor 801, a communication interface 802, a memory 803, and a communication bus 804, wherein the processor 801, the communication interface 802, and the memory 803 are completed through the communication bus 804 mutual communication,

memory 803, for storing computer programs;

In one embodiment, the processor 801 is configured to implement the steps of the relay verification method provided by any one of the foregoing method embodiments when executing the program stored in the memory 803 .

The present invention also provides a relay calibrator, which is provided with the above-mentioned relay calibrating circuit. The relay calibrator uses its own DC calibrating power supply or an external AC calibrating power supply to perform performance calibrating on the connected DC relay or AC relay to be calibrated, and obtains the performance of the DC or AC relay to be calibrated. Whether the conduction performance and action performance are good.

It can be understood that when using the relay calibrator equipped with the above-mentioned relay calibrating circuit for performance calibrating of the AC/DC relay to be calibrated, the relay calibrator does not depend on the power supply system when the AC/DC relay to be calibrated is in normal operation , can better avoid accidents that endanger personal and equipment safety due to personnel electric shock, personnel misuse, etc., and improve the safety of detection and calibration. The relay calibrator can perform performance verification of the AC and DC relays to be calibrated under the action of its own power supply or an external power supply, avoiding the situation that it cannot be used normally due to damage to its own power supply or failure to connect to an external power supply, and improving the use of the relay calibrator reliability. The relay calibrator can perform performance calibration of the AC and DC relays to be calibrated at the same time, and has good versatility.

The present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the relay verification method provided in any one of the foregoing method embodiments are implemented.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention within.

Claims (10)

1. The relay verification circuit is characterized by comprising a direct current verification power supply, an inverter circuit, a direct current test circuit and an alternating current test circuit; the direct current verification power supply is connected with the alternating current test circuit through the inverter circuit; the direct current verification power supply is connected with the direct current test circuit;

the direct current verification power supply is used for providing a direct current test power supply for the direct current test circuit and providing an alternating current test power supply for the alternating current test circuit through the inverter circuit;

the direct current test circuit is used for accessing a direct current relay to be checked and performing performance check on the direct current relay to be checked by using the direct current test power supply;

The alternating current test circuit is used for accessing an alternating current relay to be checked and performing performance check on the alternating current relay to be checked by using the alternating current test power supply.

2. The relay verification circuit of claim 1, wherein the dc test circuit comprises a dc relay access station and a dc test loop indicator light, the dc verification power source being connected to the dc test loop indicator light, the dc test loop indicator light being connected to the dc relay access station;

the direct current relay access platform is used for accessing the direct current relay to be checked and controlling the direct current relay to be checked to be in a working state by using the direct current test power supply;

the direct current test loop indicator lamp is used for indicating the conduction performance of the direct current relay to be checked;

the direct current relay to be checked is used for indicating the action performance of the direct current relay to be checked through the action of the direct current relay to be checked.

3. The relay verification circuit of claim 1, wherein the ac test circuit comprises an ac relay access station and an ac test loop indicator light; the inverter circuit is connected with the alternating current test loop indicator lamp, and the alternating current test loop indicator lamp is connected with the alternating current relay access platform;

The alternating current relay access platform is used for accessing the alternating current relay to be checked and controlling the alternating current relay to be checked to be in a working state by using the alternating current test power supply;

the alternating current test loop indicator lamp is used for indicating the conduction performance of the alternating current relay to be checked;

the to-be-checked alternating current relay is used for indicating the action performance of the to-be-checked alternating current relay through the action of the to-be-checked alternating current relay.

4. The relay verification circuit of claim 1, wherein,

the direct current test circuit also comprises a direct current button switch, and the direct current button switch is used for controlling whether the direct current test circuit works or not;

the alternating current test circuit also comprises an alternating current button switch, and the alternating current button switch is used for controlling whether the alternating current test circuit works or not.

5. The relay verification circuit of claim 1, further comprising a rectifying circuit interfacing with an external verification power source; the direct current test circuit is connected with an alternating current verification power supply outside the relay verification circuit through a rectification circuit and an external verification power supply interface;

the external checking power supply interface is used for connecting the alternating current checking power supply outside the relay checking circuit;

The alternating current verification power supply is used for replacing the direct current verification power supply, providing alternating current test power supply for the alternating current test circuit, and providing direct current test power supply for the direct current test circuit through the rectifying circuit.

6. The relay verification circuit of claim 5, further comprising an ac leakage protector and a dc leakage protector;

the alternating current leakage protector is positioned between the external check power interface and the alternating current test circuit and is used for controlling the communication between the external check power interface and the alternating current test circuit;

the direct current leakage protector is positioned between the direct current verification power supply and the direct current test circuit and is used for controlling the communication between the direct current verification power supply and the direct current test circuit;

when the alternating current leakage protector is opened and the direct current leakage protector is closed, the direct current verification power supply is used for providing an alternating current test power supply for the alternating current test circuit and providing a direct current test power supply for the direct current test circuit through the rectifying circuit;

when the alternating current leakage protector is closed and the direct current leakage protector is opened, the alternating current verification power supply is used for replacing the direct current verification power supply, providing an alternating current test power supply for the alternating current test circuit, and providing a direct current test power supply for the direct current test circuit through the rectifying circuit.

7. A relay verification method, which is characterized in that the relay verification method is applied to the relay verification circuit as claimed in any one of claims 1 to 6, wherein the relay verification circuit comprises a direct current verification power supply, an inverter circuit, a direct current test circuit and an alternating current test circuit; the direct current verification power supply is connected with the alternating current test circuit through the inverter circuit; the direct current verification power supply is connected with the direct current test circuit; the method comprises the following steps:

the direct current relay to be checked is connected into the direct current test circuit, and the direct current test circuit is used for performing performance check on the direct current relay to be checked;

and accessing an alternating current relay to be checked into the alternating current test circuit, and performing performance check on the alternating current relay to be checked by using the alternating current test circuit.

8. A relay verification device, characterized in that the relay verification device comprises:

the DC relay performance verification module is used for connecting a DC relay to be verified into the DC test circuit and performing performance verification on the DC relay to be verified by using the DC test circuit;

and the alternating current relay performance verification module is used for accessing an alternating current relay to be verified into the alternating current test circuit and performing performance verification on the alternating current relay to be verified by using the alternating current test circuit.

9. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;

a memory for storing a computer program;

a processor for implementing the steps of the relay verification method of claim 7 when executing a program stored on a memory.

10. A relay calibrator, wherein the relay calibrator is provided with a relay calibration circuit according to any one of claims 1-6.