CN217443499U - Relay operating characteristic measuring device - Google Patents
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Abstract
The utility model is suitable for an electric power system high voltage circuit breaker secondary circuit relay test technical improvement field, a relay action characteristic measuring device is provided, including relay control signal output module, the high-speed sampling module of control signal, the high-speed sampling module of contact signal, contact signal power module, processor module, communication module, display module and power management module, relay control signal output module's output, the high-speed sampling module's of control signal output, the high-speed sampling module's of contact signal output, the input of little processing module is connected respectively to contact signal power module's output and power management module's output, display module's input is connected to little processing module's output, little processing module connects communication module both-way communication. The device simple structure can not test relay coil characteristic and contact performance through the device, can completely reflect the wholeness ability of relay.
Description
Technical Field
The utility model belongs to the technical improvement field of electric power system high voltage circuit breaker secondary circuit relay test especially relates to a relay action characteristic measuring device.
Background
In the primary equipment of the power system, the switch equipment is important control and protection equipment in the power system, when the system normally operates, the switch equipment can cut off and connect circuits and various electrical equipment, and when the system has a fault, the switch equipment is matched with the relay protection to quickly cut off the fault current, so that the accident range is prevented from being enlarged. If the switch equipment can not normally operate, the circuit and the equipment can be damaged, the electric quantity is lost, and a user has large-area power failure, so that the normal life and social production are influenced. Therefore, it is very important to maintain and repair the switch equipment to ensure the normal operation thereof.
A secondary circuit relay of a switching equipment mechanism is a key component in a control circuit, is influenced by multiple factors such as harsh electromagnetic environment, outdoor harsh atmospheric environment, action mechanical stress and the like under the harsh working conditions of high heat, high humidity, vibration, dust and electromagnetic interference on an operation site, contacts of the relay are oxidized or ablated after long-term operation, action voltage, action time and contact resistance of the contacts of the relay are changed, so that the action is unreliable, and the reliability of the switching equipment is seriously influenced.
At present, non-special instruments such as a relay protection calibrator, a mechanical characteristic tester and the like are often adopted for testing a relay on a working site, only a few parameters such as action time, action voltage and the like can be tested, the existing action time and action voltage measuring device is limited in relay type and lacks of special optimization aiming at the action characteristic and detection characteristic of the relay, when the action characteristic is measured, the combination and separation state of a relay contact is judged in a switching quantity mode or a fixed potential mode, so that the action characteristic parameter is obtained, the opening and closing process of the contact is incompletely reflected, the opening and closing performance of the contact cannot be fully evaluated, the coil characteristic and the contact performance of the relay cannot be tested, the integral performance of the relay cannot be completely reflected, scientific state evaluation parameters and evaluation methods are also absent, and longitudinal and transverse data for analysis and comparison are lacked, and then whether the relay action is reliable is judged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a relay action characteristic measuring device aims at solving foretell technical problem. The project develops research aiming at the performance detection and evaluation of the secondary circuit relay of the switch equipment mechanism, comprehensively applies the multidisciplinary achievements such as modern sensor technology, detection technology, fault diagnosis technology and the like to the maintenance decision of the secondary element device of the switch equipment mechanism, and masters the reliability judgment and evaluation core technology of the control circuit through research.
The utility model discloses a realize like this, a relay operating characteristic measuring device, relay operating characteristic measuring device includes relay control signal output module, the high-speed sampling module of control signal, the high-speed sampling module of contact signal, contact signal power module, processor module, communication module, display module and power management module, relay control signal output module's output, the output of the high-speed sampling module of control signal, the output of the high-speed sampling module of contact signal, contact signal power module and power management module's output are connected respectively the input of micro-processing module, micro-processing module's output is connected display module's input, micro-processing module connects communication module both-way communication.
The utility model discloses a further technical scheme is: the relay control signal output module comprises a tri-state buffer OC, a resistor R65, a gate drive photocoupler U21, a resistor R66, a resistor R64, a triode Q2 and a connecting terminal J1, wherein the 3 rd pin of the gate drive photocoupler U21 is connected with the second pin of the tri-state buffer OC, the 2 nd pin of the gate drive photocoupler U21 is connected with one end of the resistor R65, the 6 th and 7 th pins of the gate drive photocoupler U21 are respectively connected with one end of the resistor R66, the other end of the resistor R66 is respectively connected with one end of the resistor R64 and the base of the triode Q2, and the 1 st pin of the connecting terminal JI is respectively connected with the 5 th pin of the gate drive photocoupler U21, the other end of the resistor R64 and the emitter of the triode Q2.
The utility model discloses a further technical scheme is: the control signal high-speed sampling module comprises a current acquisition unit and a voltage acquisition unit, the current acquisition unit comprises an operational amplifier U19, a resistor R9, a resistor R12 and a resistor R61, a positive input of the operational amplifier U19 is connected with one end of the resistor R12, and a negative input of the operational amplifier U19 is respectively connected with one end of the resistor R9 and one end of the resistor R61; the voltage acquisition unit comprises an isolation amplifier U2, an operational amplifier U22, a resistor R63, a resistor R62, a wiring terminal J7 and a resistor R67, wherein the positive input of the operational amplifier U22 is respectively connected with one end of the resistor R62 and the 1 st pin of the wiring terminal J7, the negative input of the operational amplifier U22 is respectively connected with one end of the resistor R63 and one end of the resistor R67, and the 27 th pin of the isolation amplifier U2 is respectively connected with the output end of the operational amplifier U22 and the other end of the resistor R63.
The utility model discloses a further technical scheme is: the contact signal high-speed sampling module comprises multiple paths of movable coupling and movable division contact loops, each path of movable coupling and movable division contact loop comprises a resistor R7, a resistor R68, a photoelectric coupler U18-A, a resistor R69 and a switch S1, a first pin of the photoelectric coupler U18-A is connected with one end of the resistor R68, the other end of the resistor R68 is respectively connected with one end of the resistor R7 and a 1 st pin of the switch S1, a 2 nd pin of the photoelectric coupler U18-A is connected with a 3 rd pin of the switch S1, and a 3 rd pin of the photoelectric coupler U18-A is connected with one end of the resistor R69.
The utility model discloses a further technical scheme is: the contact signal power supply module adopts a constant voltage switch power supply with controllable resistance.
The utility model discloses a further technical scheme is: the power management module comprises an industrial personal computer power supply unit, an ADC power supply unit, a system power supply unit and a lithium battery power supply management unit, wherein the industrial personal computer power supply unit comprises a capacitor C94 and a capacitor C97-level chip P3, a 1 st pin of the chip P3 is connected with one end of the capacitor C94, a 2 nd pin of the chip P3 is connected with the other end of the capacitor C94, a 6 th pin of the chip P3 is connected with one end of the capacitor C97, and a 5 th pin of the chip P3 is connected with the other end of the capacitor C97; the ADC power supply unit comprises a capacitor C100, a chip P1, a capacitor C106, a capacitor C107, a capacitor C46, a capacitor C47, a capacitor C55, a capacitor C56, a capacitor C50, a capacitor C52, a capacitor C48, a capacitor C49, a chip U18, a resistor R102, a resistor R99, an inductor L200 and an inductor L1, wherein a 1 st pin of the chip P1 is connected with one end of the capacitor C100, a 2 nd pin of the chip P1 is connected with the other end of the capacitor C100, a 5 th pin of the chip P1 is connected with a positive electrode of the capacitor C107, one end of the capacitor C46 and one end of the inductor L200, a 3 rd pin of the chip P1 is connected with a negative electrode of the capacitor C106, one end of the capacitor C47 and one end of the inductor L1, a 4 th pin of the chip P1 is connected with a negative electrode of the capacitor C107, a positive electrode of the capacitor C106, the other end of the capacitor C2, one end of the capacitor C56 and one end of the inductor L8653, and one end of the inductor L99 are connected with the capacitor C8653, The circuit comprises an anode of a capacitor C48 and one end of a resistor R102, the other end of the inductor L1 is connected with the other end of a book searching capacitor C56 and a cathode of a capacitor C49, the other end of the resistor R102 is connected with one end of a capacitor C50 and a pin 3 of a chip U18, and a pin 1 of the chip U18 is connected with one end of the capacitor C52.
The utility model discloses a further technical scheme is: the system power supply unit comprises a capacitor C53, a chip P2, a light-emitting diode LED2, a resistor R2, a chip U13 and a capacitor C51, wherein the 1 st pin of the chip P2 is connected with one end of the capacitor C53, the 2 nd pin of the chip P2 is connected with the other end of the capacitor C53, the 5 th pin of the chip P2 is connected with the anode of the light-emitting diode LED2, the cathode of the light-emitting diode LED2 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with the 4 th pin of the chip P2, the 2 nd pin of the chip U13 is connected with one end of the capacitor C51, and the 1 st pin of the chip U13 is connected with the other end of the capacitor C51; the lithium battery power supply management unit comprises a resistor R101, a resistor R104, a resistor R116, a resistor R100, a resistor R105, a capacitor C57, a diode D4, a diode D5, a thyristor Z1, a resistor R43 and an amplifier U14, wherein a pin 3 of the amplifier U14 is connected with one end of the resistor R101 and one end of the resistor R104 respectively, a pin 2 of the amplifier U14 is connected with a pin 3 of the thyristor Z1 and one end of the resistor R116 respectively, a pin 1 of the amplifier U14 is connected with a pin 8 of the amplifier U14 through the resistor R100, a pin 6 of the amplifier U14 is connected with one end of the resistor R105, and the other end of the resistor R105 is connected with one end of the capacitor C57, a cathode of the diode D5, an anode of the diode D4 and one end of the resistor R43 respectively.
The utility model discloses a further technical scheme is: the processor module adopts an industrial computer.
The utility model discloses a further technical scheme is: the communication module adopts a Bluetooth communication chip.
The utility model discloses a further technical scheme is: the display module adopts a display or a liquid crystal display screen.
The utility model has the advantages that: the device simple structure can not test relay coil characteristic and contact performance through the device, can completely reflect the wholeness ability of relay, provides the vertical, horizontal data that can supply the analysis to compare, judges the reliability of relay action then. The device has 2-path 1-250V alternating current or direct current voltage output and is suitable for testing the double-coil relay. The device has 4 paths of contact signal constant voltage source outputs, and can simultaneously complete 4 paths of contact performance tests of the relay. .
Drawings
Fig. 1 is a test structure diagram of a relay operating characteristic measuring device according to an embodiment of the present invention.
Fig. 2 is a schematic view of a flow chart for measuring an action value and a return value according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a measuring flow of action time according to an embodiment of the present invention.
Fig. 4 is an electrical schematic diagram of a relay control signal output module according to an embodiment of the present invention.
Fig. 5 is an electrical schematic diagram of a current collecting unit according to an embodiment of the present invention.
Fig. 6 is an electrical schematic diagram of a voltage acquisition unit according to an embodiment of the present invention.
Fig. 7 is an electrical schematic diagram of a dynamic make and break contact circuit according to an embodiment of the present invention.
Fig. 8 is an electrical schematic diagram of an industrial personal computer power supply unit provided by the embodiment of the invention.
Fig. 9 is an electrical schematic diagram of an ADC power supply unit according to an embodiment of the present invention.
Fig. 10 is an electrical schematic diagram of a system power supply unit according to an embodiment of the present invention.
Fig. 11 is an electrical schematic diagram of a lithium battery power management unit according to an embodiment of the present invention.
Detailed Description
The utility model provides a relay action characteristic measuring device, the device uses built-in battery power supply, and compatible AC220V50Hz alternating current input, at relay coil both ends, normally open contact both ends, normally closed contact both ends, apply adjustable constant voltage direct current source, through high-speed collection module, the voltage current waveform of monitoring relay action in-process coil, and the relay is normally open, the voltage waveform of normally closed contact, calculate corresponding characteristic variation, the analysis reachs the action voltage of relay, return voltage, action time, release time, action power, coil direct current resistance isoparametric.
As shown in fig. 1-11, the utility model provides a relay action characteristic measuring device, relay action characteristic measuring device includes relay control signal output module, the high-speed sampling module of control signal, the high-speed sampling module of contact signal, contact signal power module, processor module, communication module, display module and power management module, relay control signal output module's output, the high-speed sampling module's of control signal output module output, the high-speed sampling module's of contact signal output, contact signal power module's output and power management module's output are connected respectively micro-processing module's input, micro-processing module's output is connected display module's input, micro-processing module connects communication module both-way communication.
The relay control signal output module comprises a tri-state buffer OC, a resistor R65, a gate drive photocoupler U21, a resistor R66, a resistor R64, a triode Q2 and a connecting terminal J1, wherein the 3 rd pin of the gate drive photocoupler U21 is connected with the second pin of the tri-state buffer OC, the 2 nd pin of the gate drive photocoupler U21 is connected with one end of the resistor R65, the 6 th and 7 th pins of the gate drive photocoupler U21 are respectively connected with one end of the resistor R66, the other end of the resistor R66 is respectively connected with one end of the resistor R64 and the base of the triode Q2, and the 1 st pin of the connecting terminal JI is respectively connected with the 5 th pin of the gate drive photocoupler U21, the other end of the resistor R64 and the emitter of the triode Q2.
The high-speed sampling module of control signal includes current acquisition unit and voltage acquisition unit, the current acquisition unit includes operational amplifier U19, resistance R9, resistance R12 and resistance R61, operational amplifier U19's positive input is connected the one end of resistance R12, operational amplifier U19's negative input is connected respectively the one end of resistance R9 and the one end of resistance R61.
The voltage acquisition unit comprises an isolation amplifier U2, an operational amplifier U22, a resistor R63, a resistor R62, a wiring terminal J7 and a resistor R67, wherein the positive input of the operational amplifier U22 is respectively connected with one end of the resistor R62 and the 1 st pin of the wiring terminal J7, the negative input of the operational amplifier U22 is respectively connected with one end of the resistor R63 and one end of the resistor R67, and the 27 th pin of the isolation amplifier U2 is respectively connected with the output end of the operational amplifier U22 and the other end of the resistor R63.
The contact signal high-speed sampling module comprises multiple paths of movable coupling and movable division contact loops, each path of movable coupling and movable division contact loop comprises a resistor R7, a resistor R68, a photoelectric coupler U18-A, a resistor R69 and a switch S1, a first pin of the photoelectric coupler U18-A is connected with one end of the resistor R68, the other end of the resistor R68 is respectively connected with one end of the resistor R7 and a 1 st pin of the switch S1, a 2 nd pin of the photoelectric coupler U18-A is connected with a 3 rd pin of the switch S1, and a 3 rd pin of the photoelectric coupler U18-A is connected with one end of the resistor R69.
The contact signal power supply module adopts a constant voltage switch power supply with controllable resistance.
The power management module comprises an industrial personal computer power supply unit, an ADC power supply unit, a system power supply unit and a lithium battery power supply management unit.
The industrial personal computer power supply unit comprises a capacitor C94 and a capacitor C97-level chip P3, wherein the 1 st pin of the chip P3 is connected with one end of the capacitor C94, the 2 nd pin of the chip P3 is connected with the other end of the capacitor C94, the 6 th pin of the chip P3 is connected with one end of the capacitor C97, and the 5 th pin of the chip P3 is connected with the other end of the capacitor C97.
The ADC power supply unit comprises a capacitor C100, a chip P1, a capacitor C106, a capacitor C107, a capacitor C46, a capacitor C47, a capacitor C55, a capacitor C56, a capacitor C50, a capacitor C52, a capacitor C48, a capacitor C49, a chip U18, a resistor R102, a resistor R99, an inductor L200 and an inductor L1, wherein a 1 st pin of the chip P1 is connected with one end of the capacitor C100, a 2 nd pin of the chip P1 is connected with the other end of the capacitor C100, a 5 th pin of the chip P1 is connected with a positive electrode of the capacitor C107, one end of the capacitor C46 and one end of the inductor L200, a 3 rd pin of the chip P1 is connected with a negative electrode of the capacitor C106, one end of the capacitor C47 and one end of the inductor L1, a 4 th pin of the chip P1 is connected with a negative electrode of the capacitor C107, a positive electrode of the capacitor C106, the other end of the capacitor C2, one end of the capacitor C56 and one end of the inductor L8653, and one end of the inductor L99 are connected with the capacitor C8653, The circuit comprises a positive electrode of a capacitor C48 and one end of a resistor R102, the other end of the inductor L1 is connected with the other end of a book searching capacitor C56 and the negative electrode of a capacitor C49 respectively, the other end of the resistor R102 is connected with one end of the capacitor C50 and the 3 rd pin of a chip U18 respectively, and the 1 st pin of the chip U18 is connected with one end of the capacitor C52.
The system power supply unit comprises a capacitor C53, a chip P2, a light emitting diode LED2, a resistor R2, a chip U13 and a capacitor C51, wherein a 1 st pin of the chip P2 is connected with one end of the capacitor C53, a 2 nd pin of the chip P2 is connected with the other end of the capacitor C53, a 5 th pin of the chip P2 is connected with an anode of the light emitting diode LED2, a cathode of the light emitting diode LED2 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with a 4 th pin of the chip P2, a 2 nd pin of the chip U13 is connected with one end of the capacitor C51, and a 1 st pin of the chip U13 is connected with the other end of the capacitor C51.
The lithium battery power supply management unit comprises a resistor R101, a resistor R104, a resistor R116, a resistor R100, a resistor R105, a capacitor C57, a diode D4, a diode D5, a thyristor Z1, a resistor R43 and an amplifier U14, wherein a pin 3 of the amplifier U14 is connected with one end of the resistor R101 and one end of the resistor R104 respectively, a pin 2 of the amplifier U14 is connected with a pin 3 of the thyristor Z1 and one end of the resistor R116 respectively, a pin 1 of the amplifier U14 is connected with a pin 8 of the amplifier U14 through the resistor R100, a pin 6 of the amplifier U14 is connected with one end of the resistor R105, and the other end of the resistor R105 is connected with one end of the capacitor C57, a cathode of the diode D5, an anode of the diode D4 and one end of the resistor R43 respectively.
The relay control signal output module is used for relay action control and can realize 2 paths of AC 0-250V adjustable alternating voltage output or 2 paths of DC 0-250V adjustable direct voltage output and the maximum output current of 2A. The relay control signal output module comprises.
The control signal high-speed sampling module is used for signal sampling of the relay control signal output module 1, the voltage signal measurement resolution is 0.01V, and the measurement accuracy is 0.5%. The control signal high-speed sampling module comprises.
The contact signal high-speed sampling module is used for sampling the voltage of the contact signal power supply module 4, and the voltage signal measurement resolution ratio is as follows: 0.01V, measurement accuracy: 0.5 percent. The contact signal high-speed sampling module comprises a contact signal high-speed sampling module.
The contact signal power supply module outputs to normally open and normally closed contacts of the relay, can realize the output of DC6V direct current voltage of not less than 4 paths, and has the function of short-circuit protection. The contact signal power supply module comprises a contact signal power supply module.
The power management module is used for power management of the device, automatically switches power supply of the built-in battery and AC220V50Hz commercial power input, and can perform charging management of the built-in battery. The power management module comprises.
The processor module adopts an industrial computer. The industrial computer is used for output control of the relay control signal output module and the contact signal power supply module, signal acquisition and processing of the control signal high-speed sampling module and the contact signal high-speed sampling module, and functions of test data analysis, storage, management, display, peripheral output and the like.
The communication module adopts a Bluetooth communication chip. The Bluetooth communication module is used for the peripheral online communication function, and can perform the functions of handheld terminal communication transmission, server data uploading, printer connection printing and the like on data processed by an industrial computer.
The display module adopts a display or a liquid crystal display screen. And the display module is used for displaying the data result of the device.
The measurement flow of the relay operating voltage and the relay return voltage according to the present invention is described with reference to fig. 2.
The power management module automatically selects a power supply input power supply mode of the device and distributes a proper power supply to each module;
the relay control signal output module and the control signal high-speed sampling module are connected with a relay coil, and the contact signal high-speed sampling module is connected with normally open and normally closed contacts of the relay. The relay control signal output module outputs excitation signals with specified non-action values to two ends of a relay coil, the contact signal high-speed sampling module detects the state of contacts, and all the contacts are kept unchanged;
starting from a specified non-action value, the industrial computer controls a relay control signal output module to boost according to 5% Us of rated voltage, a control signal high-speed sampling module measures the voltage and current waveform of a relay coil, for example, a section T1 in fig. 2, a contact signal high-speed sampling module detects the state of contacts until all the contacts of the relay act, and the industrial computer records an action voltage value, namely, the action voltage of the relay;
the industrial computer controls the relay control signal output module 1 to keep the action voltage value output duration T, then boosts the action voltage value to a rated voltage value, and keeps the output duration T; reducing the voltage to a specified holding value, keeping the output duration T, detecting the contact state by the contact signal high-speed sampling module 3, and keeping all contacts of the relay in an action state;
starting from a specified holding value, the industrial computer 5 controls the relay control signal output module to reduce the voltage according to 5% Us of the rated voltage, the control signal high-speed sampling module measures the voltage and current waveforms of the relay coil, for example, at the section T2 in fig. 2, the contact signal high-speed sampling module detects the contact state until all the contacts of the relay are released, and the industrial computer records the released voltage value, namely the return voltage of the relay;
the industrial computer controls the relay coil excitation signal output by the relay control signal output module to be reduced to zero, and the industrial computer calculates and processes the recorded relay action voltage and the relay return voltage and outputs the calculated and processed relay action voltage and relay return voltage to the display module to display result data; the industrial computer realizes the wireless data transmission with the peripheral equipment through the Bluetooth communication module by the recorded relay action voltage and the relay return voltage.
The measurement flow of the relay actuation time and the relay release time of the present invention is described with reference to fig. 3.
The power management module 8 automatically selects the power supply mode of the device power input and distributes proper power supplies for the modules;
the relay control signal output module and the control signal high-speed sampling module are connected with a relay coil, and the contact signal high-speed sampling module and the contact signal power supply module are connected with normally open and normally closed contacts of the relay. Initially, the relay is in a release state as shown in section S1 in fig. 3, the voltage of the normally open contact of the relay is zero, and the voltage of the normally closed node of the relay is the full-scale value of the contact voltage.
The industrial computer control contact signal power supply module outputs DC6V DC voltage to the normally open and normally closed contacts of the relay, the industrial computer control relay control signal output module outputs the excitation signal of the rated value to the two ends of the coil of the relay, the relay acts at the moment, and the industrial computer records the moment as the zero point of the action time measurement moment (S2). The control signal high-speed sampling module measures the voltage of the relay coil and the current of the relay coil, the contact signal high-speed sampling module measures the waveform of each contact voltage signal, and the measured data is sent to an industrial computer for processing. The industrial computer records the moment when the voltage of the normally open contact of the relay reaches the full range value of 90% of the contact voltage for the first time, namely the action time of the normally open contact of the relay; and recording the moment when the voltage of the normally closed contact of the relay reaches the full range value of 10% contact voltage for the first time by the industrial computer, namely the action time of the normally closed contact of the relay.
The relay control signal output module 1 outputs and keeps the S3 time, the relay is in the action keeping state, and the industrial computer calculates the action power and the direct current resistance according to the relay coil voltage and the relay coil current measured by the control signal high-speed sampling module. Under the action holding state, the normally open contact voltage of the relay is the full range value of the contact voltage, and the normally closed node voltage of the relay is zero.
The industrial computer controls the relay control signal output module to remove excitation signals at two ends of the relay coil, records the moment as a release time measuring moment zero point (S4), at the moment, the relay is released, the control signal high-speed sampling module measures the voltage of the relay coil and the current of the relay coil, and the contact signal high-speed sampling module measures the waveform of each contact voltage signal. The industrial computer records the time when the voltage of the normally open contact of the relay reaches the full range value of 10% contact voltage for the first time, namely the release time of the normally open contact; and recording the moment when the voltage of the normally closed contact of the relay reaches the full range value of 90% of the contact voltage for the first time by the industrial computer, namely the releasing time of the normally closed contact of the relay.
The industrial computer calculates and processes the recorded action time of the normally closed contact of the relay, the release time of the normally closed contact of the relay, the action power and the direct current resistance, and outputs the result data to the display module for displaying the result data; the industrial computer realizes the wireless data transmission with the peripheral equipment through the Bluetooth communication module according to the recorded relay normally closed contact action time, relay normally closed contact release time, action power and direct current resistance. After the relay is released, the relay is in a release state (S5), the voltage of the normally open contact of the relay is zero, and the voltage of the normally closed node of the relay is the full-scale value of the contact voltage.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A relay operating characteristic measuring device is characterized in that: the relay action characteristic measuring device comprises a relay control signal output module, a control signal high-speed sampling module, a contact signal power supply module, a processor module, a communication module, a display module and a power management module, wherein the output end of the relay control signal output module, the output end of the control signal high-speed sampling module, the output end of the contact signal power supply module and the output end of the power management module are respectively connected with the input end of the processor module, the output end of the processor module is connected with the input end of the display module, and the processor module is connected with the communication module in two-way communication.
2. The relay operation characteristic measuring device according to claim 1, wherein the relay control signal output module includes a tri-state buffer OC, a resistor R65, a gate drive photocoupler U21, a resistor R66, a resistor R64, a transistor Q2, and a connection terminal J1, wherein a pin 3 of the gate drive photocoupler U21 is connected to the second pin of the tri-state buffer OC, a pin 2 of the gate drive photocoupler U21 is connected to one end of the resistor R65, pins 6 and 7 of the gate drive photocoupler U21 are connected to one end of the resistor R66, the other end of the resistor R66 is connected to one end of the resistor R64 and a base of the transistor Q2, and a pin 1 of the connection terminal JI is connected to a pin 5 of the gate drive photocoupler U21, the other end of the resistor R64, and an emitter of the transistor Q2.
3. The relay operation characteristic measuring device according to claim 2, wherein the control signal high-speed sampling module comprises a current collecting unit and a voltage collecting unit, the current collecting unit comprises an operational amplifier U19, a resistor R9, a resistor R12 and a resistor R61, a positive input of the operational amplifier U19 is connected with one end of the resistor R12, and a negative input of the operational amplifier U19 is connected with one end of the resistor R9 and one end of the resistor R61 respectively; the voltage acquisition unit comprises an isolation amplifier U2, an operational amplifier U22, a resistor R63, a resistor R62, a wiring terminal J7 and a resistor R67, wherein the positive input of the operational amplifier U22 is respectively connected with one end of the resistor R62 and the 1 st pin of the wiring terminal J7, the negative input of the operational amplifier U22 is respectively connected with one end of the resistor R63 and one end of the resistor R67, and the 27 th pin of the isolation amplifier U2 is respectively connected with the output end of the operational amplifier U22 and the other end of the resistor R63.
4. The relay operating characteristic measuring apparatus according to claim 3, wherein the contact signal high-speed sampling module includes a plurality of contact circuits for dynamic coupling and dynamic division, each contact circuit for dynamic coupling and dynamic division includes a resistor R7, a resistor R68, a photoelectric coupler U18-A, a resistor R69, and a switch S1, a first pin of the photoelectric coupler U18-A is connected to one end of the resistor R68, the other end of the resistor R68 is connected to one end of the resistor R7 and a 1 st pin of a switch S1, respectively, a 2 nd pin of the photoelectric coupler U18-A is connected to a 3 rd pin of the switch S1, and a 3 rd pin of the photoelectric coupler U18-A is connected to one end of the resistor R69.
5. The relay operation characteristic measuring device according to claim 4, wherein the contact signal power supply module employs a constant voltage switching power supply having a controllable resistance.
6. The relay operation characteristic measurement device according to claim 5, wherein the power management module comprises an industrial personal computer power supply unit, an ADC power supply unit, a system power supply unit and a lithium battery power supply management unit, the industrial personal computer power supply unit comprises a capacitor C94, a capacitor C97 and a chip P3, a 1 st pin of the chip P3 is connected with one end of the capacitor C94, a 2 nd pin of the chip P3 is connected with the other end of the capacitor C94, a 6 th pin of the chip P3 is connected with one end of the capacitor C97, and a 5 th pin of the chip P3 is connected with the other end of the capacitor C97; the ADC power supply unit comprises a capacitor C100, a chip P1, a capacitor C106, a capacitor C107, a capacitor C46, a capacitor C47, a capacitor C55, a capacitor C56, a capacitor C50, a capacitor C52, a capacitor C48, a capacitor C49, a chip U18, a resistor R102, a resistor R99, an inductor L200 and an inductor L1, wherein a 1 st pin of the chip P1 is connected with one end of the capacitor C100, a 2 nd pin of the chip P1 is connected with the other end of the capacitor C100, a 5 th pin of the chip P1 is connected with a positive electrode of the capacitor C107, one end of the capacitor C46 and one end of the inductor L200, a 3 rd pin of the chip P1 is connected with a negative electrode of the capacitor C106, one end of the capacitor C47 and one end of the inductor L1, a 4 th pin of the chip P1 is connected with a negative electrode of the capacitor C107, a positive electrode of the capacitor C106, the other end of the capacitor C2, one end of the capacitor C56 and one end of the inductor R695 are connected with an end of the inductor L828653, and a pin of the capacitor C99 are connected with a pin 828653, and a pin 8253 are connected with the capacitor C849, The circuit comprises a positive electrode of a capacitor C48 and one end of a resistor R102, the other end of the inductor L1 is connected with the other end of a book searching capacitor C56 and the negative electrode of a capacitor C49 respectively, the other end of the resistor R102 is connected with one end of the capacitor C50 and the 3 rd pin of a chip U18 respectively, and the 1 st pin of the chip U18 is connected with one end of the capacitor C52.
7. The relay operation characteristic measurement device according to claim 6, wherein the system power supply unit includes a capacitor C53, a chip P2, a light emitting diode LED2, a resistor R2, a chip U13 and a capacitor C51, wherein a 1 st pin of the chip P2 is connected to one end of the capacitor C53, a 2 nd pin of the chip P2 is connected to the other end of the capacitor C53, a 5 th pin of the chip P2 is connected to an anode of the light emitting diode LED2, a negative electrode of the light emitting diode LED2 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to a 4 th pin of the chip P2, a 2 nd pin of the chip U13 is connected to one end of the capacitor C51, and a 1 st pin of the chip U13 is connected to the other end of the capacitor C51; the lithium battery power supply management unit comprises a resistor R101, a resistor R104, a resistor R116, a resistor R100, a resistor R105, a capacitor C57, a diode D4, a diode D5, a thyristor Z1, a resistor R43 and an amplifier U14, wherein a pin 3 of the amplifier U14 is connected with one end of the resistor R101 and one end of the resistor R104 respectively, a pin 2 of the amplifier U14 is connected with a pin 3 of the thyristor Z1 and one end of the resistor R116 respectively, a pin 1 of the amplifier U14 is connected with a pin 8 of the amplifier U14 through the resistor R100, a pin 6 of the amplifier U14 is connected with one end of the resistor R105, and the other end of the resistor R105 is connected with one end of the capacitor C57, a cathode of the diode D5, an anode of the diode D4 and one end of the resistor R43 respectively.
8. The relay action characteristic measuring device according to claim 7, wherein the processor module employs an industrial computer.
9. The relay operation characteristic measuring device according to claim 8, wherein the communication module employs a bluetooth communication chip.
10. The relay action characteristic measuring device according to claim 9, wherein the display module is a display or a liquid crystal display.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115372817A (en) * | 2022-10-26 | 2022-11-22 | 国网江西省电力有限公司电力科学研究院 | Automatic detection device and method for building block type relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115372817A (en) * | 2022-10-26 | 2022-11-22 | 国网江西省电力有限公司电力科学研究院 | Automatic detection device and method for building block type relay |
| CN115372817B (en) * | 2022-10-26 | 2023-03-14 | 国网江西省电力有限公司电力科学研究院 | Automatic detection device and method for building block type relay |
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