CN115656807A - Automatic checking device for relay - Google Patents
Automatic checking device for relay Download PDFInfo
- Publication number
- CN115656807A CN115656807A CN202211433926.0A CN202211433926A CN115656807A CN 115656807 A CN115656807 A CN 115656807A CN 202211433926 A CN202211433926 A CN 202211433926A CN 115656807 A CN115656807 A CN 115656807A
- Authority
- CN
- China
- Prior art keywords
- relay
- voltage
- automatic
- verification
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The application relates to an automatic checking device for a relay. The device comprises: the relay base and the central processing unit are connected with each other; the central processing unit responds to a user verification instruction and determines a target relay to be verified in the relays placed on the relay base; acquiring electrical parameters of the target relay under the condition of applying the checking voltage or checking current; and carrying out automatic calibration of the relay based on the electrical parameters to obtain an automatic calibration result of the target relay. By adopting the method, the efficiency of relay checking can be improved.
Description
Technical Field
The application relates to the technical field of relay checking, in particular to an automatic relay checking device.
Background
A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount meets a predetermined requirement. The system has an interactive relationship between a control system and a controlled system, and is generally applied to an automatic control circuit; it is an 'automatic switch' which uses small current to control large current operation, and has the functions of automatic regulation, safety protection, circuit conversion, etc. in the circuit.
In the prior art, in the process of field maintenance and repair of a relay, especially a relay, the using condition of the relay often needs to be verified through multiple dimensions, for example, dimensions such as coil direct resistance, action voltage, return voltage, normally open contact closed resistance, normally closed contact, starting power and the like are verified respectively by configuring a direct current generating device and a universal meter. On one hand, however, parameters to be checked in each check item are different, required check equipment is also different, and more complex wiring operation is required for checking multiple dimensions; on the other hand, since the voltage and the current in the calibration parameters are transient values, it is very inconvenient to read and record the parameters while detecting, and the parameter reading and recording can be completed by the cooperation of three or more workers. So the efficiency of parameter verification for the relay is very low at present.
Therefore, a device is needed to improve the efficiency of checking the working condition of the relay.
Disclosure of Invention
In view of the above, it is necessary to provide an automatic relay calibration device capable of improving the calibration efficiency.
In a first aspect, the application provides an automatic relay checking device. The device comprises a relay base and a central processing unit which are connected with each other;
the central processing unit responds to a user verification instruction and determines a target relay to be verified in the relays placed on the relay base; acquiring electrical parameters of the target relay under the condition of applying a verification voltage or a verification current; and carrying out automatic relay verification based on the electrical parameters to obtain an automatic verification result of the target relay.
In one embodiment, the central processing unit comprises a test line output module, a test voltage output module, an analog input module and an automatic verification module;
the test circuit output module responds to a user verification instruction to determine a target relay to be verified in the relays inserted into the relay base; the test voltage output module controls an external power supply to apply a verification voltage or a verification current to the target relay; the analog quantity input module acquires the electrical parameters of the target relay; and the automatic checking module performs automatic checking on the relay based on the electrical parameters to obtain an automatic checking result of the target relay.
In one embodiment, the apparatus further comprises an amplification collector;
the amplification collector collects the electrical parameters of the target relay, amplifies and converts the electrical parameters into analog quantity parameters, and sends the analog quantity parameters to the analog quantity input module.
In one embodiment, the number of the target relays is multiple, and the automatic relay checking device further comprises a switching matrix;
the amplification collector is connected with the relay base through the switching matrix; and the central processing unit controls the gating of the switching matrix.
In one embodiment, the apparatus further comprises a constant flow, limited pressure source;
the constant current voltage limiting source is connected with the switching matrix; the constant current voltage limiting source outputs a constant current source and an open-circuit voltage to the contact resistor of the target relay; the amplification collector collects the constant current source through which the contact resistor flows under the open circuit voltage and the voltage drop of the contact resistor when the contact resistor flows through the constant current source, and amplifies and converts the voltage drop into an analog quantity parameter.
In one embodiment, the apparatus further comprises a programmable power supply;
one end of the programmable power supply is connected with the relay base, and the other end of the programmable power supply is connected with the amplification collector through the switching matrix; and the programmable power supply outputs the verification voltage to the target relay.
In one embodiment, the apparatus further comprises a contact drop test power supply;
one end of the contact voltage drop test power supply is connected with the program-controlled power supply through the switching matrix, and the other end of the contact voltage drop test power supply is connected with the central processing unit; and the contact voltage drop test power supply outputs the verification current to the target relay.
In one embodiment, the electrical parameters include coil resistance, contact resistance, actuation voltage, actuation current, release voltage, release current, insulation resistance, dielectric withstand voltage, actuation time, and contact bounce time.
In one embodiment, the relay base comprises a plurality of indicator lights;
and the test line output module generates and sends digital signals to the plurality of indicator lights in the relay base according to the automatic verification result.
In one embodiment, the device further comprises a human-computer interaction component;
the human-computer interaction component is connected with the central processing unit; and the human-computer interaction component is used for receiving the automatic verification result and feeding back the automatic verification result.
The automatic relay checking device comprises a relay base and a central processing unit which are connected with each other. The central processing unit firstly responds to a user verification instruction, determines a target relay to be verified in the relays placed on the relay base, and then acquires electrical parameters of the target relay under the condition of applying verification voltage or verification current; and finally, based on the electrical parameters, carrying out automatic calibration on the relay to obtain an automatic calibration result of the relay. The electric parameters to be checked are obtained by using the checking voltage and the checking current, and the collected electric parameters are automatically checked, so that the checking efficiency of the relay is improved.
Drawings
FIG. 1 is a diagram of an embodiment of a relay automatic calibration device;
FIG. 2 is a block diagram of a central processing unit in one embodiment;
FIG. 3 is a schematic diagram of the structure between the indicator light and the relay base in one embodiment;
fig. 4 is an application environment diagram of the automatic relay checking device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
In order to explain the structure and function of the terminal for measuring sedimentation of packing for flow guide well in the present application, the following description will be made in the embodiments.
In one embodiment, as shown in fig. 1, there is provided an apparatus for automatic calibration of a relay, including: a relay base 100 and a central processor 200 connected to each other;
the central processing unit 200 responds to the user verification instruction, and determines a target relay to be verified at this time in the relays placed on the relay base 100; acquiring electrical parameters of a target relay under the condition of applying a checking voltage or checking current; and carrying out automatic calibration of the relay based on the electrical parameters to obtain an automatic calibration result of the target relay.
The central processing unit 200 is a final execution unit for information processing and program operation, and serves as an operation and control core of the computer system. In this application, the central processing unit 200 is configured to output the verification voltage and the verification current according to a user instruction. A relay is an electric control device, which is an electric appliance that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement, that is, a switch that applies a predetermined electric signal to an input terminal and turns on and off the controlled circuit at an output terminal thereof. The relay mount 100 functions as a carrier relay. The electrical parameter refers to a parameter related to electrical control.
Specifically, the relay automatic checking device comprises a plurality of relay bases 100 for placing relays and a central processing unit 200, wherein the central processing unit 200 responds to a checking instruction of a user to determine the relays needed to be checked by the user, namely, the target relays to be checked at this time in the relays placed on the relay bases 100 are determined, after the determination is made, checking voltage or checking current is applied to the target relays to be checked, the collection of electrical parameters can be controlled through the checking voltage or checking current, the collected electrical parameters are sent to the central processing unit 200, and the central processing unit 200 performs automatic checking operation to obtain an automatic checking result for automatically checking the electrical parameters.
Further, the relay socket 100 includes a dc relay socket 120 and an ac relay socket 140 for mounting a dc relay or an ac relay, respectively.
The automatic relay checking device includes a relay base 100 and a central processing unit 200 connected to each other. The central processing unit 200 firstly responds to a user verification instruction, and determines a target relay to be verified at this time in the relays placed on the relay base 100; then acquiring the electrical parameters of the target relay under the condition of applying the verification voltage or the verification current; and finally, based on the electrical parameters, carrying out automatic calibration on the relay to obtain an automatic calibration result of the relay. The electric parameters to be checked are obtained by using the checking voltage and the checking current, and the collected electric parameters are automatically checked, so that the checking efficiency of the relay is improved.
In one embodiment, as shown in fig. 2, the cpu 200 includes a test line output module 220, a test voltage output module 240, an analog input module 260, and an automatic verification module 280.
The test line output module 220 responds to a user verification instruction to determine a target relay to be verified in the relays inserted into the relay base 100; the test voltage output module 240 controls an external power supply to apply a verification voltage or a verification current to the target relay; the analog input module 260 acquires the electrical parameters of the target relay; the automatic calibration module 280 performs automatic calibration of the relay based on the electrical parameters to obtain an automatic calibration result of the target relay.
Specifically, the cpu 200 includes four modules, which are a test line output module 220, a test voltage output module 240, an analog input module 260, and an automatic verification module 280. The test line output module 220 is configured to determine, according to the user verification instruction that is responded, a relay that a user needs to verify, that is, a target relay to be verified at this time among relays already placed on the relay base 100; the test voltage output module 240 is used for controlling an external power supply to apply a verification voltage or a verification current to the target relay according to a user verification instruction; after the analog input module 260 acquires the electrical parameters of the target relay, the analog input module 260 acquires the electrical parameters of the target relay; the automatic verification module 280 is used for automatically verifying the target relay according to the electrical parameters and generating a corresponding automatic verification result.
Further, the test line output module 220 may perform 32-path digital signal output through the digital output card to determine the relay that the user needs to verify.
In this embodiment, the four modules of the central processing unit are established, so that the division cooperation of the central processing unit 200 is realized, and the efficiency of the automatic calibration of the relay automatic calibration device is improved.
In one embodiment, the automatic relay checking device further includes an amplification collector 300;
the amplification collector 300 collects the electrical parameters of the target relay, amplifies and converts the electrical parameters into analog quantity parameters, and sends the analog quantity parameters to the analog quantity input module 260.
The analog parameter is a parameter that continuously changes within a certain range. The collector is an automatic device with the functions of on-site real-time data acquisition and processing. The system has the functions of real-time acquisition, automatic storage, real-time display, real-time feedback and the like. The amplification collector 300 is to collect the amplified data after amplifying the collected initial data.
Specifically, the automatic relay checking device further includes an amplification collector 300, the amplification collector 300 is connected to each relay base 100, the amplification collector 300 is connected to the central processing unit 200, the amplification collector 300 takes the collected electrical parameters as initial electrical parameters, amplifies and converts the initial electrical parameters into analog quantities and collects the analog quantities, and the analog quantity input module 260 can acquire the converted electrical parameter data from the amplification collector 300 by using an analog quantity input card, thereby completing the data collection process.
Further, the method for converting the collected electrical parameters into analog quantity by the amplification collector 300 includes, but is not limited to, converting resistance and current signals into voltage signals, and converting low voltage signals into voltage signals of 0 to 5V.
In this embodiment, by setting the amplification collector 300, the electrical parameters can be amplified and converted into analog quantities and collected, so that the efficiency of the automatic verification module 280 for automatically verifying the electrical parameters is improved.
In one embodiment, the number of the target relays is multiple, and the automatic relay checking device further comprises a switching matrix;
the amplification collector 300 is connected with the relay base 100 through a switching matrix; the central processor 200 controls the switching matrix gating.
The switching matrix is an M × N structure, in which multiple signals can be independently selected and output as needed when multiple signals are input, and the selection of signals is completed.
Specifically, when the number of the target relays is multiple, automatic calibration needs to be performed on multiple relays at the same time, at this time, a switching matrix needs to be used, the amplification collector 300 is connected with the relay base 100 through the switching matrix, and the switching matrix is used for gating the relay bases 100 and is controlled by the central processing unit 200.
Further, the switching matrices include a dc shift switching matrix 420 and an ac shift switching matrix 440.
In this embodiment, through setting up the switching matrix, pertinence ground realizes carrying out the check to the relay of one or more different specifications, and carries out the check to the relay of a plurality of different specifications simultaneously.
In one embodiment, the automatic relay calibration device further comprises a constant current limiting voltage source;
the constant current voltage limiting source is connected with the switching matrix; the constant current voltage limiting source outputs a constant current source and an open-circuit voltage to a contact resistor of the target relay; the amplification collector 300 collects the constant current source through which the contact resistor flows under the open circuit voltage and the voltage drop of the contact resistor when the contact resistor flows through the constant current source, and amplifies and converts the voltage drop into an analog parameter.
The constant-current voltage-limiting source is a wide-frequency-spectrum high-precision current-stabilizing power supply, has the advantages of high response speed, high constant-current precision, capability of stably working for a long time and suitability for loads with various properties, and can provide stable output current and output voltage.
Specifically, the automatic relay calibration device further comprises a constant-current voltage limiting source, and the constant-current voltage limiting source is connected with the switching matrix. The constant current voltage limiting source comprises a first constant current voltage limiting source 520 and a second constant current voltage limiting source 540, wherein the first constant current voltage limiting source 520 is connected with the direct current gear switching matrix 420, and the second constant current voltage limiting source 540 is connected with the alternating current gear switching matrix 440. The first constant current voltage limiting source 520 is used for providing a constant current and a dc open circuit voltage to a target dc relay, under the dc open circuit voltage, the amplifying collector 300 is used for collecting the voltage drop of the contact resistance when the constant current source and the dc open circuit voltage flow through the contact resistance, amplifying and converting the constant current source and the voltage drop into analog quantity parameters, sending the analog quantity parameters to the analog quantity input module 260, the automatic verification module 280 is used for verifying the contact resistance of the dc relay through the analog quantity parameters, the second constant current voltage limiting source 540 is used for providing a constant current and a dc open circuit voltage to the target dc relay, under the ac open circuit voltage, the amplifying collector 300 is used for collecting the voltage drop of the contact resistance when the constant current source and the dc open circuit voltage flow through the contact resistance, amplifying and converting the constant current source and the voltage drop into analog quantity parameters, and sending the analog quantity parameters to the analog quantity input module 260, and the automatic verification module 280 is used for verifying the contact resistance of the ac relay through the analog quantity parameters. The relay contact resistance is divided into a normally closed contact resistance and a normally open contact resistance, wherein the normally closed contact resistance is measured when the relay is in a non-excitation state, and the normally open contact resistance is measured when the relay is in a rated excitation state.
Furthermore, specific values of the constant current source and the constant voltage source are not limited, and can be adaptively adjusted according to actual verification conditions.
In this embodiment, by providing the constant current limiting voltage source 500, a stable output current and an open-circuit voltage can be provided, and the contact resistance of the relay can be better verified.
In one embodiment, the automatic relay checking device further comprises a programmable power supply;
one end of the program-controlled power supply is connected with the relay base 100, and the other end of the program-controlled power supply is connected with the amplification collector 300 through the switching matrix; the program-controlled power supply outputs the check voltage to the target relay.
The program-controlled power supply is a device which is controlled by a microcomputer and is used for providing electric power, and the voltage stabilization and the current stabilization of output voltage and the voltage stabilization and the current stabilization of output current are set through external control.
Specifically, the relay device further comprises a programmable power supply, which further comprises a direct current programmable power supply 620 and an alternating current programmable power supply 640. One end of the direct current program control power supply 620 is connected with the direct current relay base 120, the other end of the direct current program control power supply 620 is connected with the amplification collector 300 through a switching matrix, and a direct current check voltage is provided to a target direct current relay under the control of the tested voltage output module 240; one end of the ac program control power supply 640 is connected to the ac relay base 140, and the other end is connected to the amplification collector 300 through the switching matrix, and the test voltage output module 240 outputs the ac verification voltage to the target ac relay.
Furthermore, the dc programmable power supply 620 provides a dc verification voltage of 0 to 450V, the ac programmable power supply 640 provides an ac verification voltage of 0 to 300V, and the verification personnel adjusts the required verification voltage according to actual needs.
In this embodiment, by dividing the programmable power supply into the dc programmable power supply 620 and the ac programmable power supply 640, the corresponding verification current can be applied to both the dc relay and the ac relay, thereby improving the accuracy of the relay.
In one embodiment, the automatic relay checking device further comprises a contact drop test power supply 700;
one end of the contact voltage drop test power supply 700 is connected with the program-controlled power supply through the switching matrix, and the other end of the contact voltage drop test power supply 700 is connected with the central processing unit 200; the contact drop test power supply 700 outputs a verification current to the target relay.
The contacts of the relay are in a normally open or normally closed state, that is, the contacts of the relay are normally open or normally closed to make the signal connected or disconnected. The voltage drop refers to the potential difference across the load. The contact drop test power supply 700 is a power device that provides current through a drop across the contacts.
Specifically, the automatic relay verification apparatus further includes a contact drop test power supply 700. One end of the contact voltage drop test power supply 700 is connected with the program-controlled power supply through the switching matrix, and the other end of the contact voltage drop test power supply 700 is connected with the central processing unit 200. The contact drop test power supply 700 is controlled by the test voltage output module 240 to output a verification current to the target relay.
Further, the contact voltage drop test power supply 700 provides a verification current of 0 to 10A, and the verification personnel adjusts the required verification current according to actual needs.
In this embodiment, by setting the contact voltage drop test power supply 700, controllable verification current can be applied to the target relay, and the verification efficiency of the relay is improved.
In one embodiment, the automatic verification result of the target relay includes coil resistance, contact resistance, operating voltage, operating current, release voltage, release current, insulation resistance, dielectric voltage resistance, operating time, and contact bounce time of the target relay.
The relay coil resistance refers to a direct current resistance value measured at the beginning and the end of the coil when the ambient temperature is 20 ℃. The relay contact resistance is divided into a normally closed contact resistance and a normally open contact resistance, wherein the normally closed contact resistance is measured when the relay is in a non-excitation state, and the normally open contact resistance is measured when the relay is in a rated excitation state. The insulation resistance of the relay refers to a resistance value of an insulation part between the conductive parts which are not connected when a certain direct current voltage is applied. The relay dielectric withstand voltage refers to the ability of each insulating portion to withstand a prescribed voltage (50 HZ ac effective value) without breakdown and excessive leakage current (1 mA or less). The action time of the relay is the time required from the start of energization of the coil to the time when all the contacts reach the operating state. The release time of the relay is the time required from when the coil is de-energized until all contacts return to the released state.
Specifically, the automatic verification of the relay is to perform automatic verification on electrical parameters of the relay, that is, measuring coil resistance of the relay, measuring contact resistance of the relay, measuring operation voltage and/or operation current of the relay, measuring release voltage and/or release current of the relay, measuring insulation resistance of the relay, testing dielectric voltage resistance of the relay, measuring operation time of the relay, and measuring contact bounce time of the relay.
Furthermore, the test voltage output module 240 outputs 0-5V analog quantity to control the programmable power supply to output the verification voltage and the contact voltage drop test power supply 700 to output the verification current to the target relay for electrical parameter verification; in addition, the contact resistance in the electrical parameters is verified through a constant current source and a constant voltage source which are provided by a constant current voltage limiting source.
In this embodiment, through carrying out comprehensive check-up to relay electrical parameter, can verify the service condition of relay better.
In one embodiment, as shown in fig. 3, the relay base 100 includes a number of indicator lights 160;
the test line output module 220 generates and transmits digital signals to the plurality of indicator lights 160 in the relay base 100 according to the automatic verification result.
The digital signal refers to a signal in which an independent variable is discrete and a dependent variable is also discrete, wherein the independent variable is represented by an integer, and the dependent variable is represented by one of finite numbers. In computers, the magnitude of a digital signal is often represented by a binary number with a limit.
Specifically, each relay base 100 corresponds to a plurality of indicator lights 160, each indicator light 160 corresponds to a check item of the relay, the test line output module 220 generates a digital signal to control the on/off of the indicator lights 160 or make the indicator lights 160 show different light according to the automatic check result, and the user can obtain the check result of the relay corresponding to the check item according to the on/off of the indicator lights 160 or the different light shown by the indicator lights 160.
Furthermore, the user obtains the verification result of the relay corresponding to the verification item according to the on/off of the indicator light 160 or the different light presented by the indicator light 160, and the verification result obtained by the user in this process may include three types, i.e. pass, fail and parameter out-of-tolerance.
In this embodiment, through setting up the pilot lamp, can make the user can more audio-visual understanding the check-up result of relay.
In one embodiment, the automatic relay checking device further includes a human-computer interaction component 800;
the human-computer interaction assembly 800 is connected with the central processor 200; the human-computer interaction component 800 is used for receiving the automatic verification result and feeding back the automatic verification result.
Specifically, the automatic relay checking device further comprises a human-computer interaction assembly 800 connected with the central processing unit 200, and configured to receive a user instruction to test the relay, and perform visual feedback according to an automatic checking result of the relay, where the fed-back automatic checking result is received by the user.
Further, human-machine interaction component 800 provides feedback in the form of visualizations, including, but not limited to, voltage waveform diagrams, tables, and the like.
In this embodiment, through setting up human-computer interaction subassembly 800, can realize the visual feedback to the automatic check-up result, let the user know the result of relay automatic check-up more conveniently and deeply.
In one embodiment, the automatic verification module 280 verifies the relay coil resistance through a volt-ammeter method and a bridge method.
Specifically, according to the ohm law of the circuit, when the voltmeter method is checked, the precision of the adopted voltmeter should not be lower than one level, the internal resistance of the voltmeter is as large as possible, the internal resistance of the ammeter is as small as possible, and the coil voltage and/or current should not exceed the rated working voltage and/or current of the relay during testing; when performing bridge method verification, the bridge includes, but is not limited to, a wheatstone bridge, a kelvin bridge, and the like.
Further, when the measured resistance environmental temperature is less than or exceeds 20 degrees celsius, the calibration result needs to be converted into a value of 20 degrees celsius by the following formula:
R 20℃ ＝R[1+α(20-t)]
wherein R is 20℃ Resistance value at 20 ℃ in ohm; t is the test environment temperature; r is the resistance value when the ambient temperature is t, and the unit is ohm; alpha is the temperature coefficient of resistance.
In one embodiment, the automatic verification module 280 may verify the contact resistance of the relay via a comprehensive tester and feed back via a waveform diagram.
Specifically, after the relay receives a constant current source and a constant voltage source which are provided by a constant current limiting voltage source, the contact resistance of the relay is verified, and the contact resistance value obtained by measuring the contact is not the real contact resistance of the contact, and also comprises the resistance values of a reed, a lead and a test rod.
In one embodiment, the automatic verification module 280 may verify the relay action voltage/current by a relay sensitivity tester.
Specifically, the method for verifying the relay operating voltage/current by the auto-verifying module 280 includes, but is not limited to, gradually increasing the coil voltage/current from zero, and the coil voltage/current value when all the contacts are operated is the operating voltage/current.
In one embodiment, the automatic verification module 280 may also verify the relay release voltage/current via a relay sensitivity tester.
Specifically, the method for verifying the release voltage/current of the relay by the auto-verification module 280 includes, but is not limited to, gradually decreasing the coil voltage/current from the rated value, i.e., the value of the coil voltage/current when all the contacts are active, i.e., the release voltage/current.
In one embodiment, the automatic verification module 280 verifies the insulation resistance of the relay by verifying two parallel portions of the surface insulation resistance Rs and the volume insulation resistance Rv of the relay, and the verification of the insulation resistance is also affected by temperature and humidity.
In one embodiment, the automatic verification module 280 verifies the relay on time and off time by applying the rated operating voltage/current values to the coil.
Further, the action time and the release time of the relay are verified in a form including, but not limited to, verification using a digital millisecond oscilloscope or an oscilloscope with an external trigger and a time scale.
In one embodiment, the dc relay base 120, the ac relay base 140, and the corresponding indicator lights 160 are integrated into a test component; the direct current program-controlled power supply 620, the alternating current program-controlled power supply 640, the contact voltage drop test power supply 700, the amplification collector 300 and the central controller are integrated in a verification component; the connection of the test part and the verification part includes, but is not limited to, connection by a D-shaped circular plug with a cable.
In an actual application scenario, the automatic relay calibration device provided in the embodiment of the present application, as shown in fig. 4, includes a relay base 100 and a central processing unit 200 that are connected to each other; the central processing unit 200 comprises four parts, namely a test line output module 220, a test voltage output module 240, an analog input module 260 and an automatic verification module 280; the human-computer interaction component 800 is connected with the central processor 200; the relay base 100 includes a dc relay base 120 and an ac relay base 140; the direct current relay base 120 and the alternating current relay base 140 are connected with the central processor 200 through the amplification collector 300; the dc relay base 120 is connected to the amplification collector 300 through the dc gear switching matrix 420; the dc relay base 120 is connected to the dc link switching matrix 420 through the dc program-controlled power supply 620; the ac relay base 140 is connected to the amplification collector 300 through an ac gear switching matrix 440; the ac relay base 140 is connected to an ac gear switching matrix 440 via an ac programmable power supply 640; the first constant current voltage limiting source 520 is connected with the dc shift switching matrix 420; the second constant current voltage limiting source 540 is connected with the ac gear switching matrix 440; one end of the contact voltage drop test power supply 700 is connected with the central processing unit 200; the other end of the contact voltage drop test power supply 700 is connected to the dc level switching matrix 420 and the ac level switching matrix 440, respectively.
The test circuit output module 220 of the central processing unit 200 responds to a user verification instruction to determine a target relay to be verified at this time in relays placed on the relay base 100, the test voltage output module 240 controls the programmable power supply to output a verification voltage, and the contact voltage drop test power supply 700 outputs a verification current to the target relay, the amplification collector 300 performs electrical parameter collection of the target relay and sends the electrical parameter collection to the analog input module 260, the analog input module 260 acquires electrical parameters of the target relay and sends the electrical parameters to the automatic verification module 280, the automatic verification of the relay is performed based on the electrical parameter automatic verification module 280, an automatic verification result of the target relay is acquired, and the automatic verification result is fed back to the human-computer interaction assembly 800.
In this embodiment, the central processing unit 200 first responds to a user verification instruction, and determines a target relay to be verified in the relays placed on the relay base 100; acquiring electrical parameters of a target relay under the condition of applying a checking voltage or checking current; and finally, based on the electrical parameters, carrying out automatic calibration on the relay to obtain an automatic calibration result of the relay. The electric parameters to be checked are obtained by using the checking voltage and the checking current, and the collected electric parameters are automatically checked, so that the checking efficiency of the relay is improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims (10)
1. The automatic relay checking device is characterized by comprising a relay base and a central processing unit which are connected with each other;
the central processing unit responds to a user verification instruction and determines that the target relay to be verified is in the relays arranged on the relay base; acquiring electrical parameters of the target relay under the condition of applying the checking voltage or checking current; and carrying out automatic relay verification based on the electrical parameters to obtain an automatic verification result of the target relay.
2. The device of claim 1, wherein the central processing unit comprises a test line output module, a test voltage output module, an analog input module and an automatic verification module;
the test circuit output module responds to a user verification instruction and determines a target relay to be verified in the relays inserted into the relay base; the test voltage output module controls an external power supply to apply a verification voltage or a verification current to the target relay; the analog quantity input module acquires analog quantity parameters of the target relay; and the automatic checking module carries out automatic checking on the relay based on the electrical parameters to obtain an automatic checking result of the target relay.
3. The apparatus of claim 2, further comprising an amplification collector;
the amplification collector is used for collecting the electrical parameters of the target relay, amplifying and converting the electrical parameters into analog quantity parameters, and sending the analog quantity parameters to the analog quantity input module.
4. The apparatus of claim 3, wherein the number of the target relays is plural, the relay automatic verification apparatus further comprises a switching matrix;
the amplification collector is connected with the relay base through the switching matrix; and the central processing unit controls the gating of the switching matrix.
5. The device of claim 4, further comprising a constant flow, limited pressure source;
the constant current voltage limiting source is connected with the switching matrix; the constant current voltage limiting source outputs a constant current source and an open circuit voltage to a contact resistor of the target relay; the amplification collector collects the voltage drop of the contact resistor when the constant current source passes through the contact resistor under the open circuit voltage and the contact resistor passes through the constant current source, and the voltage drop is amplified and converted into analog quantity parameters.
6. The device of claim 4, further comprising a programmable power supply;
one end of the program-controlled power supply is connected with the relay base, and the other end of the program-controlled power supply is connected with the amplification collector through the switching matrix; and the programmable power supply outputs the verification voltage to the target relay.
7. The device of claim 6, further comprising a contact drop test power supply;
one end of the contact voltage drop test power supply is connected with the program-controlled power supply through the switching matrix, and the other end of the contact voltage drop test power supply is connected with the central processing unit; and the contact voltage drop test power supply outputs the verification current to the target relay.
8. The apparatus of claim 2, wherein the automatic verification result of the target relay comprises a coil resistance, a contact resistance, an operation voltage, an operation current, a release voltage, a release current, an insulation resistance, a dielectric voltage resistance, an operation time, and a contact bounce time of the target relay.
9. The apparatus of claim 2, wherein the relay base includes a number of indicator lights;
and the test line output module generates and sends digital signals to the plurality of indicator lamps in the relay base according to the automatic checking result.
10. The apparatus of claim 2, further comprising a human-machine interaction component;
the human-computer interaction assembly is connected with the central processing unit; and the human-computer interaction component is used for receiving the automatic verification result and feeding back the automatic verification result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211433926.0A CN115656807A (en) | 2022-11-16 | 2022-11-16 | Automatic checking device for relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211433926.0A CN115656807A (en) | 2022-11-16 | 2022-11-16 | Automatic checking device for relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115656807A true CN115656807A (en) | 2023-01-31 |
Family
ID=85017416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211433926.0A Pending CN115656807A (en) | 2022-11-16 | 2022-11-16 | Automatic checking device for relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115656807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117250494A (en) * | 2023-10-30 | 2023-12-19 | 中核检修有限公司 | Thermal relay verification method, thermal relay verification device, computer equipment and readable storage medium |
-
2022
- 2022-11-16 CN CN202211433926.0A patent/CN115656807A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117250494A (en) * | 2023-10-30 | 2023-12-19 | 中核检修有限公司 | Thermal relay verification method, thermal relay verification device, computer equipment and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8447543B2 (en) | Electric vehicle simulator and analyzer (EVSA) for electric vehicle supply equipment | |
| CN110554351B (en) | Real load detection method and system of non-invasive load electric energy meter | |
| KR20110036192A (en) | Integrated system and method for testing electronic component | |
| CN115656807A (en) | Automatic checking device for relay | |
| CN206161810U (en) | Intelligent control box relay test appearance | |
| CN115856588B (en) | Chip test board and test method | |
| CN219871718U (en) | Power supply test system | |
| CN216117922U (en) | Plug-in relay quick calibration device | |
| CN110208631A (en) | A kind of transformer overload test macro | |
| CN105842560A (en) | Relay protection type component testing system | |
| CN210427690U (en) | Transformer overload test system | |
| CN113848462A (en) | Automatic test platform and test method for PCBA single board in power electronic industry | |
| CN211123024U (en) | PCB branch current detection device and PCB detection system | |
| CN113900946A (en) | Test method and test system suitable for multiple power supply devices | |
| CN217902317U (en) | Energy controller testing device | |
| CN112526427A (en) | Auxiliary inspection device for direct current system of transformer substation | |
| CN111208411A (en) | Multi-channel low-resistance test system | |
| CN211042540U (en) | Testing device | |
| CN215678544U (en) | Test equipment | |
| CN219302582U (en) | Radio equipment distribution box test device | |
| CN220154619U (en) | Test circuit for fuse | |
| CN219657786U (en) | Universal virtual testing device | |
| CN220381221U (en) | Explosion-proof equipment with resistance tester | |
| CN212083646U (en) | Online checking system for electric energy meter checking assembly line | |
| CN221056644U (en) | Handheld adjustable load device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |