CN102981120A - Full-performance detecting system of magnetic latching relay and detecting method thereof - Google Patents
Full-performance detecting system of magnetic latching relay and detecting method thereof Download PDFInfo
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- CN102981120A CN102981120A CN2012104605979A CN201210460597A CN102981120A CN 102981120 A CN102981120 A CN 102981120A CN 2012104605979 A CN2012104605979 A CN 2012104605979A CN 201210460597 A CN201210460597 A CN 201210460597A CN 102981120 A CN102981120 A CN 102981120A
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Abstract
The invention relates to the field of electrical equipment detection, in particular to a full-performance detecting system of a magnetic latching relay and a detecting method of the full-performance detecting system of the magnetic latching relay. The detecting system comprises a main control panel, an auxiliary control panel and a resistive load box, wherein the auxiliary control panel is communicated with the main control panel through a network port, the auxiliary control panel controls the resistive load box to work by controlling an air switch, and the main control panel is connected with the magnetic latching relay. An ongoing full-performance test of the magnetic latching relay comprises an initial operation voltage, a returned value voltage test, an operation time test, a four probe method and high current method coil resistance test, a contact temperature-rise test, a mechanical life test, an electrical endurance test and an overload test. The full-performance detecting system is simple in wiring, capable of automatically finishing an electrical performance test, a safety performance test and a service life test without manual intervention, comprehensive in test items, and simple in test process.
Description
Technical field
The present invention relates to the power equipment field tests, be particularly related to electric energy meter in the electric system with system and method thereof that the full performance (electric property, mechanical property, life-span and environmental performance) of magnetic latching relay detects, be specifically related to a kind of full performance detecting system and detection method thereof of magnetic latching relay.
Background technology
Along with the fast development of intelligent grid, the consumption of intelligent electric energy meter rapidly increases.As the key link of electric energy metrical, intelligent electric energy meter needs before use through using behind the assay approval of examining and determine department, and not only its metering performance will meet the demands, and its safety and reliability also will be guaranteed.Magnetic latching relay is one of main components of intelligent electric energy meter, the quality of its quality has determined the quality of intelligent electric energy meter machine product in essence, only have through the magnetic latching relay behind the full performance test just can be applied in the intelligent electric energy meter, the high-quality quality magnetic latching relay after service test is qualified could fundamentally guarantee various users' safety.
Calibrating department need to utilize reliable checkout equipment and detection method that the full performance of magnetic latching relay is detected, and comprises electric property, mechanical property, life-span and environmental performance.Magnetic latching relay is different from other conventional relay, it be a kind of still can be with magnetic force (being produced by magnetic material) bistable relay of state when keeping excitation after removing pulse excitation, the conversion that is on off state is to finish by the pulse excitation signal triggering of one fixed width, and maintenance closed and open mode depends on the magnetic action of permanent-magnet steel.When being applied to intelligent electric energy meter, it also has a special function---cut off the load current with certain energy.Existing machinery industry standard JB/T10923 " electronic electric energy meter magnetic latching relay " has stipulated the content of electric property, ambient adaptability, security and durability test that magnetic latching relay need to carry out, but at present domestic also do not have complete simple testing equipment and the test method of a cover to carry out full performance test to magnetic latching relay.
Electromagnetic type relay performance evaluation device is very many at present, be that 200410044043.6 electromagnetic relay static characteristic test analysis apparatus, the patent No. are that method of testing, the application number of 200410043965.5 dynamic characterist ics of electromagnetic relay is 200410060893.5 automatic detecting system for relay such as application number, but also be not specifically designed to the patented claim of the full Performance Detection of magnetic latching relay.
Therefore, be necessary to provide a kind of full performance detecting system of magnetic latching relay and the defective that detection method overcomes prior art thereof.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of full performance detecting system and detection method thereof of magnetic latching relay, the magnetic latching relay full performance test content that the present invention can carry out is: initial actuating voltage test, rreturn value voltage test, test actuation time, four-end method and the test of electricity current method coil resistance, contact temperature rise test, mechanical endurance test, electrical endurance test and overload test.
The objective of the invention is to adopt following technical proposals to realize:
A kind of full performance detecting system of magnetic latching relay, its improvements are that described detection system comprises master console, subconsole and resistor load box; Described subconsole is by carrying out communication between network interface and the master console; Described subconsole makes resistor load box work by the control air switch; Described detection system is connected with described magnetic latching relay;
The magnetic latching relay full performance test that described detection system is carried out comprises initial actuating voltage test, rreturn value voltage test, test actuation time, four-end method and the test of electricity current method coil resistance, contact temperature rise test, mechanical endurance test, electrical endurance test and overload test;
Described detection system is carried out hot test, low-temperature test with after high-low temperature test chamber is connected; Described monitoring system is carried out constant temperature and moisture test with after Homothermal Proof Box is connected.
Wherein, described master console comprises microprocessor I, state detection unit, timer I, square wave control module, direct voltage source, DC current source, voltage sample device I, current sampler I, man-machine interaction unit and AD converter I;
Described timer I, square wave control module, direct voltage source, DC current source, man-machine interaction unit and AD converter I are connected with microprocessor I and are connected;
Described state detection unit is connected with timer I; Described direct voltage source is connected with the square wave control module; Described current sampler I is connected with AD converter I with DC current source respectively; Described voltage sample device I is connected with AD converter I.
Wherein, described direct voltage source is adjustable direct voltage source.
Wherein, described man-machine interaction unit adopts operation interface to realize; Described square wave control module comprises the square wave controller; Described state detection unit detects magnetic latching relay control contact and signalling contact, judges whether normally adhesive of contact by control circuit.
Wherein, described master console connects three-phase supply, and three-phase supply is as the power supply of master console.
Wherein, described subconsole comprises microprocessor II, air switch, counter, timer II, alarm, electronic switch set, AD converter II, thermocouple sensor, voltage sample device II and current sampler II;
Described air switch, counter, timer II, alarm, electronic switch set and AD converter II are connected with microprocessor II and are connected;
Described thermocouple sensor, voltage sample device II are connected with AD converter II with current sampler II and are connected.
Wherein, described microprocessor II is connected with master console by signal wire; Described electronic switch set is connected with master console by excitation power supply; Described air switch is connected with master console by three-phase supply.
Wherein, described resistor load box comprises fan, tuning coil, three-phase transformer, pull-up resistor and current control device;
Described fan is the resistor load box heat radiation; Described tuning coil, three-phase transformer, pull-up resistor are connected with current control device and are connected.
Wherein, described tuning coil is connected with air switch; Described ohmic load is connected with current sampler II.
Wherein, described current control device comprises rheochord and air switch; Described rheochord is connected with air switch.
Wherein, described resistor load box provides the adjustable resistive load electric current of 0～150A for overload test, electrical endurance test and the temperature rise test of magnetic latching relay.
The present invention is based on the detection method of the full performance detecting system of a kind of magnetic latching relay that another purpose provides, its improvements are that described method comprises the steps:
(1) connects tested magnetic latching relay and master console;
(2) the initial actuating voltage of the tested magnetic latching relay of measurement;
(3) the rreturn value voltage of the tested magnetic latching relay of measurement;
(4) actuation time of the tested magnetic latching relay of measurement;
(5) carry out the mechanical endurance test of tested magnetic latching relay;
(6) master console detects the state of tested magnetic latching relay, and the control excitation power supply makes it be in closure state;
(7) reconnect tested magnetic latching relay and master console;
(8) tested magnetic latching relay is fixed on the subconsole;
(9) carry out tested magnetic latching relay electricity current method coil resistance test and calculating coil resistance;
(10) the contact temperature rise of carrying out tested magnetic latching relay is tested, and the contact temperature rise of calculating tested magnetic latching relay;
(11) when the temperature of tested magnetic latching relay is cooled to normal temperature, remove thermocouple sensor;
(12) overload of carrying out tested magnetic latching relay is tested;
(13) carry out the electrical endurance test of tested magnetic latching relay.
Wherein, in the described step (1), the control coil contact extension line of tested magnetic latching relay inserted be connected with the drive terminal of master console; The state contact of tested magnetic latching relay is connected with the state-detection terminal of master console.
Wherein, in the described step (2), it is the initial actuating voltage test that the man-machine interaction unit by master console arranges test event, begins to measure the initial actuating voltage of tested magnetic latching relay.
Wherein, described initial actuating voltage test is: the state of being tested tested magnetic latching relay by master console state of a control testing power supply, and send driving pulse and make tested magnetic latching relay be in closure state, controlling subsequently adjustable direct voltage source increases the voltage that puts on tested magnetic latching relay two ends gradually according to the predetermined step-length of 0.05V-5V; When the state contact that detects tested magnetic latching relay is in when opening, record current magnitude of voltage, finish the initial actuating voltage test
Wherein, in the described step (3), it is the rreturn value voltage test that the man-machine interaction unit by master console arranges test event, begins to measure the rreturn value voltage of tested magnetic latching relay.
Wherein, described rreturn value voltage test is: by the state of the tested magnetic latching relay of master console control test, send driving pulse and make tested magnetic latching relay be in open mode, control subsequently adjustable direct voltage source and reduce gradually the voltage that puts on tested magnetic latching relay two ends according to the predetermined step-length of 0.05V-5V; When the state contact that detects tested magnetic latching relay is in closure, record current magnitude of voltage, finish the rreturn value voltage test.
Wherein, in the described step (4), it is test actuation time that the man-machine interaction unit by master console arranges test event, the actuation time that begins to measure tested magnetic latching relay.
Wherein, described test actuation time is: the output voltage values of master console control adjustable direct voltage source is the rated operational voltage of tested magnetic latching relay, when the contacts status that state detection unit detects tested magnetic latching relay changes, start timer I, transformation period starting point and the terminal point of the tested magnetic latching relay contacts status of microprocessor records, execution time test after calculating.
Wherein, in the described step (5), it is mechanical endurance test that the man-machine interaction unit by master console arranges test event, begins to carry out the mechanical endurance test of tested magnetic latching relay;
Wherein, described mechanical endurance test is: the dutycycle of utilizing the built-in set timer square wave control module of microprocessor I, the number of umber of pulse for being scheduled to that the square wave control module sends is set simultaneously, utilize the pulse voltage output quantity of square wave control module control adjustable direct voltage source under tested magnetic latching relay rated voltage, control tested magnetic latching relay and carry out closure, opening action according to predetermined number of times, finish mechanical endurance test; Described predetermined number is 1 * 10
5
Wherein, in the described step (6), the control coil contact extension line of tested magnetic latching relay is inserted the drive terminal of master console, master console detects the state of tested magnetic latching relay, and the control excitation power supply makes it be in closure state.
Wherein, in the described step (7), the sub-extension line of the voltage input end on the master console is linked to each other with the state contact of tested magnetic latching relay; The sub-extension line of current output terminal on the master console is connected with the state contact of tested magnetic latching relay, and guarantees that voltage input end lead-in wire tie point is in the inboard of current output terminal lead-in wire tie point.
Wherein, in the described step (8), the control coil contact extension line of tested magnetic latching relay inserts the drive terminal of subconsole; The state-detection terminal of subconsole is inserted in the state contact of tested magnetic latching relay by lead-in wire.
Wherein, in the described step (9), the test of described electricity current method coil resistance is: master console with the instruction of electricity current method coil resistance test by Internet Transmission to subconsole, after subconsole is received instruction, detect first the state of tested magnetic latching relay, guarantee that it is in closure state; Control subsequently air switch starting resistance load box to predetermined current value, the current value of measuring coil and magnitude of voltage calculate coil resistance according to Ohm law; Described predetermined current value is greater than 10A.
Wherein, in the described step (10), the temperature rise experiment of described contact is: the 5mm place that thermocouple sensor is attached to the state contact extension line shell of tested magnetic latching relay, master console with the command of temperature rise test to subconsole, the output current that subconsole arranges resistor load box is the rated contact current of tested magnetic latching relay, measures contact temperature and the automatic record of tested magnetic latching relay; Start simultaneously timer II and resistor load box, continue (0.5 ~ 1) h, when reaching predetermined time (0.5 ~ 1) h, subconsole utilizes air switch to cut off the electric current of resistor load box, sample the simultaneously contact temperature of tested magnetic latching relay, and automatic record, finally calculate the contact temperature rise of tested magnetic latching relay, and transfer data to simultaneously master console.
Wherein, in the described step (12), described overload test is: to subconsole, the output current that subconsole arranges resistor load box is the overload electric current of magnetic latching relay to master console with the command of the overload test of tested magnetic latching relay; Start simultaneously timer II and resistor load box, when reaching 10min during predetermined time, subconsole utilizes air switch to cut off the electric current of resistor load box, finishes the overload test of tested magnetic latching relay.
Wherein, in the described step (13), described electrical endurance test is: it is electrical endurance test that the man-machine interaction unit by master console arranges test event, and master console arranges dutycycle and the excitation number of square wave control module output square-wave signal; Master console passes to subconsole with the control signal of excitation power supply and state detection unit; The output current that subconsole arranges resistor load box is the overload electric current of tested magnetic latching relay, starts simultaneously counter and resistor load box, when reaching tested magnetic latching relay 0.5 * 10
4The control alarm unit sends alerting signal during inferior action frequency, finishes electrical endurance test.
Compared with the prior art, the beneficial effect that reaches of the present invention is:
(1) full performance detecting system and the detection method thereof of magnetic latching relay provided by the invention can be carried out the test of single-phase magnetic latching relay and Three-phase magnetic latching relay, can also carry out the electromagnetic relay test simultaneously.Master console, subconsole and three devices of resistor load box are controlled three-phase supply simultaneously, and are safe and reliable.
(2) the full performance detecting system of magnetic latching relay provided by the invention also has warning function, automatic counting function and clocking capability, and is multiple functional.Warning function can send alerting signal, and test is finished in prompting; Automatic counting function can be finished the statistics of electromagnetic type relay action frequency; Clocking capability can be finished starting point and the terminal point of relay contact adhesive transformation period.
(3) substantially need not artificial participation and can automatically finish electrical performance test, safety feature test and durability test, pilot project is comprehensive, and process of the test is simple.
(4) wiring is simple, saves the calibrating time.
(5) after the full performance detecting system of magnetic latching relay provided by the invention adds high-low temperature test chamber and Homothermal Proof Box, can carry out hot test, low-temperature test and constant temperature and moisture test.
(6) the full performance detecting system of magnetic latching relay provided by the invention and detection method thereof are taked modular design, have how much connectors and consistent IO interface of standard.
(7) the full performance detecting system of magnetic latching relay provided by the invention and detection method thereof can be carried out fail-test to relay, assessment relay quality.
(8) the full performance detecting system of magnetic latching relay provided by the invention and method thereof can be carried out full Performance Detection for built-in and external two kinds of relays.
Description of drawings
Fig. 1 is the schematic diagram of magnetic latching relay full performance test system master provided by the invention platform processed;
Fig. 2 is the schematic diagram of magnetic latching relay full performance test provided by the invention system.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
The schematic diagram of magnetic latching relay full performance test provided by the invention system comprises master console, subconsole and resistor load box as shown in Figure 2.Subconsole is by carrying out communication between network interface and the master console; Subconsole makes resistor load box work by the control air switch; Described detection system is connected with magnetic latching relay;
The schematic diagram of magnetic latching relay full performance test system master provided by the invention platform processed as shown in Figure 1, master console comprises microprocessor I, state detection unit, timer I, square wave control module, direct voltage source, DC current source, voltage sample device I, current sampler I, man-machine interaction unit and AD converter I; Timer I, square wave control module, direct voltage source, DC current source, man-machine interaction unit and AD converter I are connected with microprocessor I and are connected; State detection unit is connected with timer I; Direct voltage source is connected with the square wave control module; Described current sampler I is connected with AD converter I with DC current source respectively; Described voltage sample device I is connected with AD converter I.Direct voltage source is adjustable direct voltage source.
Man-machine interaction unit adopts operation interface to realize; Described square wave control module comprises the square wave controller; Described state detection unit detects Control contact and signalling contact, judges whether normally adhesive of contact by control circuit.The main contact folding condition that detects magnetic latching relay; Master console connects three-phase supply, and three-phase supply is as the power supply of master console.
Subconsole comprises microprocessor II, air switch, counter, timer II, alarm, electronic switch set, AD converter II, thermocouple sensor, voltage sample device II and current sampler II; Air switch, counter, timer II, alarm, electronic switch set and AD converter II are connected with microprocessor II and are connected; Thermocouple sensor, voltage sample device II are connected with AD converter II with current sampler II and are connected.
Microprocessor II is connected with master console by signal wire; Described electronic switch set is connected with master console by excitation power supply; Described air switch is connected with master console by three-phase supply.
Resistor load box comprises fan, tuning coil, three-phase transformer, pull-up resistor and current control device; Fan is the resistor load box heat radiation; Described tuning coil, three-phase transformer, pull-up resistor are connected with current control device and are connected.Tuning coil is connected with air switch; Described ohmic load is connected with current sampler II.
Electric current controls device and comprises rheochord and air switch; Described rheochord is connected with air switch.
Master console utilizes microprocessor I to realize initial actuating voltage test, rreturn value voltage test, test actuation time, the test of four-end method coil resistance and mechanical endurance test.
The initial actuating voltage test is: the state of being tested tested magnetic latching relay by master console state of a control testing power supply, and send driving pulse and make tested magnetic latching relay be in closure state, controlling subsequently adjustable direct voltage source increases the voltage that puts on tested magnetic latching relay two ends gradually according to the predetermined step-length of 0.05V-5V; When the state contact that detects tested magnetic latching relay is in when opening, record current magnitude of voltage, finish the initial actuating voltage test.
The rreturn value voltage test is: by the state of the tested magnetic latching relay of master console control test, send driving pulse and make it be in open mode, control subsequently adjustable direct voltage source and reduce gradually the voltage that puts on tested magnetic latching relay two ends according to the predetermined step-length of 0.05V-5V; When the state contact that detects tested magnetic latching relay is in closure, record current magnitude of voltage, finish the rreturn value voltage test.
Actuation time, test was: the output voltage values of master console control adjustable direct voltage source is the rated operational voltage of tested magnetic latching relay, when the contacts status that state detection unit detects tested magnetic latching relay changes, start timer I, transformation period starting point and the terminal point of the tested magnetic latching relay contacts status of microprocessor records, execution time test after calculating.
Utilize on this basis the dutycycle of the built-in set timer square wave control module of microprocessor I, the umber of pulse that the square wave control module sends is set simultaneously (is generally 1 * 10 for predetermined number
5), utilize the pulse voltage output quantity of square wave control module control adjustable direct voltage source under tested magnetic latching relay rated voltage, control tested magnetic latching relay and carry out closure, opening action according to predetermined number of times, finish mechanical endurance test.
The test of four-end method coil resistance is: the contacts status that is detected tested magnetic latching relay by master console, make it be in closure state, master console applies little electric current subsequently, measures the voltage and current at two ends, tested magnetic latching relay contact, utilizes Ohm law to calculate coil resistance.
Subconsole is by carrying out communication between network interface and the master console, receive the signal of the large current coil resistance test, overload test, electrical endurance test and the contact temperature rise test that are transmitted by man-machine interaction unit by the microprocessor of master console, utilize Internet Transmission to subconsole.After subconsole was received instruction, the control air switch made the resistor load box action, applied predetermined current value to tested magnetic latching relay, began to test.
The instant starting currents of resistor load box reaches the hundreds of ampere usually, and excessive immediate current can make the air switch Frequent trip, therefore tuning coil has been installed to solve the excessive problem of instant starting currents.In addition, the large power, electrically current load causes device temperature too high easily, electrical motor fan has been installed has been dispelled the heat to resistor load box.The size that resistor load box applies load current by subconsole by on control air switch and the resistor load box according to current control device realize that overload test, electrical endurance test and the temperature rise test that resistor load box can be magnetic latching relay provides the adjustable resistive load electric current of 0～150A.
The present invention also provides a kind of detection method of full performance detecting system of magnetic latching relay, comprises the steps:
(1) the control coil contact extension line insertion with tested magnetic latching relay is connected with the drive terminal of master console; The state contact of tested magnetic latching relay is connected with the state-detection terminal of master console.
(2) test event is set is the initial actuating voltage test to the man-machine interaction unit by master console, begins to measure the initial actuating voltage of tested magnetic latching relay.
(3) test event is set is the rreturn value voltage test to the man-machine interaction unit by master console, begins to measure the rreturn value voltage of tested magnetic latching relay.
(4) test event is set is test actuation time to the man-machine interaction unit by master console, the actuation time that begins to measure tested magnetic latching relay.
(5) test event is set is mechanical endurance test to the man-machine interaction unit by master console, begins to carry out the mechanical endurance test of tested magnetic latching relay.
(6) the control coil contact extension line of tested magnetic latching relay is inserted the drive terminal of master console, master console detects the state of tested magnetic latching relay, and the control excitation power supply makes it be in closure state.
(7) the sub-extension line of the voltage input end on the master console is linked to each other with the state contact of tested magnetic latching relay; The sub-extension line of current output terminal on the master console is connected with the state contact of tested magnetic latching relay, and guarantees that voltage input end lead-in wire tie point is in the inboard of current output terminal lead-in wire tie point.
(8) tested magnetic latching relay is fixed on the subconsole.The control coil contact extension line of tested magnetic latching relay inserts the drive terminal of subconsole; The state-detection terminal of subconsole is inserted in the state contact of tested magnetic latching relay by lead-in wire.
(9) master console with the order of electricity current method coil resistance test by Internet Transmission to subconsole, after subconsole is received instruction, detect first the state of tested magnetic latching relay, and guarantee that it is in closure state.Control subsequently air switch starting resistance load box to predetermined current value (generally greater than 10A), measure current value and magnitude of voltage, calculate coil resistance according to Ohm law.
(10) thermocouple sensor is attached to the 5mm place of the state contact extension line shell of tested magnetic latching relay, master console with the command transfer of temperature rise test to subconsole, the output current that subconsole arranges resistor load box is the rated contact current of tested magnetic latching relay, measures contact temperature and the automatic record of tested magnetic latching relay this moment.Subsequently, start simultaneously timer II and resistor load box, when reaching predetermined time, subconsole utilizes air switch to cut off the electric current of resistor load box, sample the simultaneously contact temperature of tested magnetic latching relay, and automatic record, finally calculate the contact temperature rise of tested magnetic latching relay, and transfer data to simultaneously master console.
(11) when the temperature of tested magnetic latching relay is cooled to normal temperature, remove thermocouple sensor.
(12) to subconsole, the output current that subconsole arranges resistor load box is the overload electric current of magnetic latching relay to master console with the command transfer of overload test.Subsequently, start simultaneously timer II and resistor load box, when reaching predetermined time, subconsole utilizes air switch to cut off the electric current of electrical load case, finishes the overload test.
(13) test event is set is electrical endurance test to the man-machine interaction unit by master console, and master console arranges dutycycle and the excitation number of square wave control module output square-wave signal.Subsequently, master console passes to subconsole with excitation power supply and control signal.The output current that subconsole arranges resistor load box is the overload electric current of tested magnetic latching relay, start simultaneously counter and resistor load box, the control alarm unit sends alerting signal when reaching the predetermined action frequency of tested magnetic latching relay, finishes electrical endurance test.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (28)
1. the full performance detecting system of a magnetic latching relay is characterized in that, described detection system comprises master console, subconsole and resistor load box; Described subconsole is by carrying out communication between network interface and the master console; Described subconsole makes resistor load box work by the control air switch; Described detection system is connected with described magnetic latching relay;
The magnetic latching relay full performance test that described detection system is carried out comprises initial actuating voltage test, rreturn value voltage test, test actuation time, four-end method and the test of electricity current method coil resistance, contact temperature rise test, mechanical endurance test, electrical endurance test and overload test;
Described detection system is carried out hot test, low-temperature test with after high-low temperature test chamber is connected; Described monitoring system is carried out constant temperature and moisture test with after Homothermal Proof Box is connected.
2. full performance detecting system as claimed in claim 1, it is characterized in that described master console comprises microprocessor I, state detection unit, timer I, square wave control module, direct voltage source, DC current source, voltage sample device I, current sampler I, man-machine interaction unit and AD converter I;
Described timer I, square wave control module, direct voltage source, DC current source, man-machine interaction unit and AD converter I are connected with microprocessor I and are connected;
Described state detection unit is connected with timer I; Described direct voltage source is connected with the square wave control module; Described current sampler I is connected with AD converter I with DC current source respectively; Described voltage sample device I is connected with AD converter I.
3. full performance detecting system as claimed in claim 2 is characterized in that, described direct voltage source is adjustable direct voltage source.
4. full performance detecting system as claimed in claim 2 is characterized in that, described man-machine interaction unit adopts operation interface to realize; Described square wave control module comprises the square wave controller; Described state detection unit detects magnetic latching relay control contact and signalling contact, judges whether normally adhesive of contact by control circuit.
5. full performance detecting system as claimed in claim 2 is characterized in that, described master console connects three-phase supply, and three-phase supply is as the power supply of master console.
6. full performance detecting system as claimed in claim 1, it is characterized in that described subconsole comprises microprocessor II, air switch, counter, timer II, alarm, electronic switch set, AD converter II, thermocouple sensor, voltage sample device II and current sampler II;
Described air switch, counter, timer II, alarm, electronic switch set and AD converter II are connected with microprocessor II and are connected;
Described thermocouple sensor, voltage sample device II are connected with AD converter II with current sampler II and are connected.
7. full performance detecting system as claimed in claim 6 is characterized in that, described microprocessor II is connected with master console by signal wire; Described electronic switch set is connected with master console by excitation power supply; Described air switch is connected with master console by three-phase supply.
8. full performance detecting system as claimed in claim 1 is characterized in that, described resistor load box comprises fan, tuning coil, three-phase transformer, pull-up resistor and current control device;
Described fan is the resistor load box heat radiation; Described tuning coil, three-phase transformer, pull-up resistor are connected with current control device and are connected.
9. full performance detecting system as claimed in claim 7 is characterized in that, described tuning coil is connected with air switch; Described ohmic load is connected with current sampler II.
10. full performance detecting system as claimed in claim 7 is characterized in that, described current control device comprises rheochord and air switch; Described rheochord is connected with air switch.
11. full performance detecting system as claimed in claim 7 is characterized in that, described resistor load box provides the adjustable resistive load electric current of 0～150A for overload test, electrical endurance test and the temperature rise test of magnetic latching relay.
12. the detection method of the full performance detecting system of a magnetic latching relay is characterized in that, described method comprises the steps:
(1) connects tested magnetic latching relay and master console;
(2) the initial actuating voltage of the tested magnetic latching relay of measurement;
(3) the rreturn value voltage of the tested magnetic latching relay of measurement;
(4) actuation time of the tested magnetic latching relay of measurement;
(5) carry out the mechanical endurance test of tested magnetic latching relay;
(6) master console detects the state of tested magnetic latching relay, and the control excitation power supply makes it be in closure state;
(7) reconnect tested magnetic latching relay and master console;
(8) tested magnetic latching relay is fixed on the subconsole;
(9) carry out tested magnetic latching relay electricity current method coil resistance test and calculating coil resistance;
(10) the contact temperature rise of carrying out tested magnetic latching relay is tested, and the contact temperature rise of calculating tested magnetic latching relay;
(11) when the temperature of tested magnetic latching relay is cooled to normal temperature, remove thermocouple sensor;
(12) overload of carrying out tested magnetic latching relay is tested;
(13) carry out the electrical endurance test of tested magnetic latching relay.
13. detection method as claimed in claim 12 is characterized in that, in the described step (1), the control coil contact extension line of tested magnetic latching relay inserted is connected with the drive terminal of master console; The state contact of tested magnetic latching relay is connected with the state-detection terminal of master console.
14. detection method as claimed in claim 12 is characterized in that, in the described step (2), it is the initial actuating voltage test that the man-machine interaction unit by master console arranges test event, begins to measure the initial actuating voltage of tested magnetic latching relay.
15. detection method as claimed in claim 14, it is characterized in that, described initial actuating voltage test is: the state of being tested tested magnetic latching relay by master console state of a control testing power supply, and send driving pulse and make tested magnetic latching relay be in closure state, controlling subsequently adjustable direct voltage source increases the voltage that puts on tested magnetic latching relay two ends gradually according to the predetermined step-length of 0.05V-5V; When the state contact that detects tested magnetic latching relay is in when opening, record current magnitude of voltage, finish the initial actuating voltage test
16. detection method as claimed in claim 12 is characterized in that, in the described step (3), it is the rreturn value voltage test that the man-machine interaction unit by master console arranges test event, begins to measure the rreturn value voltage of tested magnetic latching relay.
17. detection method as claimed in claim 12, it is characterized in that, described rreturn value voltage test is: by the state of the tested magnetic latching relay of master console control test, send driving pulse and make tested magnetic latching relay be in open mode, control subsequently adjustable direct voltage source and reduce gradually the voltage that puts on tested magnetic latching relay two ends according to the predetermined step-length of 0.05V-5V; When the state contact that detects tested magnetic latching relay is in closure, record current magnitude of voltage, finish the rreturn value voltage test.
18. detection method as claimed in claim 12 is characterized in that, in the described step (4), it is test actuation time that the man-machine interaction unit by master console arranges test event, the actuation time that begins to measure tested magnetic latching relay.
19. detection method as claimed in claim 18, it is characterized in that, described test actuation time is: the output voltage values of master console control adjustable direct voltage source is the rated operational voltage of tested magnetic latching relay, when the contacts status that state detection unit detects tested magnetic latching relay changes, start timer I, transformation period starting point and the terminal point of the tested magnetic latching relay contacts status of microprocessor records, execution time test after calculating.
20. detection method as claimed in claim 12 is characterized in that, in the described step (5), it is mechanical endurance test that the man-machine interaction unit by master console arranges test event, begins to carry out the mechanical endurance test of tested magnetic latching relay;
21. detection method as claimed in claim 12, it is characterized in that, described mechanical endurance test is: the dutycycle of utilizing the built-in set timer square wave control module of microprocessor I, the number of umber of pulse for being scheduled to that the square wave control module sends is set simultaneously, utilize the pulse voltage output quantity of square wave control module control adjustable direct voltage source under tested magnetic latching relay rated voltage, control tested magnetic latching relay and carry out closure, opening action according to predetermined number of times, finish mechanical endurance test; Described predetermined number is 1 * 10
5
22. detection method as claimed in claim 12, it is characterized in that, in the described step (6), the control coil contact extension line of tested magnetic latching relay is inserted the drive terminal of master console, master console detects the state of tested magnetic latching relay, and the control excitation power supply makes it be in closure state.
23. detection method as claimed in claim 12 is characterized in that, in the described step (7), the sub-extension line of the voltage input end on the master console is linked to each other with the state contact of tested magnetic latching relay; The sub-extension line of current output terminal on the master console is connected with the state contact of tested magnetic latching relay, and guarantees that voltage input end lead-in wire tie point is in the inboard of current output terminal lead-in wire tie point.
24. detection method as claimed in claim 12 is characterized in that, in the described step (8), the control coil contact extension line of tested magnetic latching relay inserts the drive terminal of subconsole; The state-detection terminal of subconsole is inserted in the state contact of tested magnetic latching relay by lead-in wire.
25. detection method as claimed in claim 12, it is characterized in that, in the described step (9), the test of described electricity current method coil resistance is: master console with the instruction of electricity current method coil resistance test by Internet Transmission to subconsole, after subconsole is received instruction, detect first the state of tested magnetic latching relay, guarantee that it is in closure state; Control subsequently air switch starting resistance load box to predetermined current value, the current value of measuring coil and magnitude of voltage calculate coil resistance according to Ohm law; Described predetermined current value is greater than 10A.
26. detection method as claimed in claim 12, it is characterized in that, in the described step (10), the temperature rise experiment of described contact is: the 5mm place that thermocouple sensor is attached to the state contact extension line shell of tested magnetic latching relay, master console with the command of temperature rise test to subconsole, the output current that subconsole arranges resistor load box is the rated contact current of tested magnetic latching relay, measures contact temperature and the automatic record of tested magnetic latching relay; Start simultaneously timer II and resistor load box, continue (0.5 ~ 1) h, when reaching predetermined time, subconsole utilizes air switch to cut off the electric current of resistor load box, sample the simultaneously contact temperature of tested magnetic latching relay, and automatic record, finally calculate the contact temperature rise of tested magnetic latching relay, and transfer data to simultaneously master console.
27. detection method as claimed in claim 12, it is characterized in that, in the described step (12), described overload test is: to subconsole, the output current that subconsole arranges resistor load box is the overload electric current of magnetic latching relay to master console with the command of the overload test of tested magnetic latching relay; Start simultaneously timer II and resistor load box, when reaching 10min during predetermined time, subconsole utilizes air switch to cut off the electric current of resistor load box, finishes the overload test of tested magnetic latching relay.
28. detection method as claimed in claim 12, it is characterized in that, in the described step (13), described electrical endurance test is: it is electrical endurance test that the man-machine interaction unit by master console arranges test event, and master console arranges dutycycle and the excitation number of square wave control module output square-wave signal; Master console passes to subconsole with the control signal of excitation power supply and state detection unit; The output current that subconsole arranges resistor load box is the overload electric current of tested magnetic latching relay, starts simultaneously counter and resistor load box, when reaching tested magnetic latching relay 0.5 * 10
4The control alarm unit sends alerting signal during inferior action frequency, finishes electrical endurance test.
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| CN201210460597.9A CN102981120B (en) | 2012-11-15 | 2012-11-15 | Full-performance detecting system of magnetic latching relay and detecting method thereof |
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