CN202443109U - Burn-in screen device for magnetic latching relay - Google Patents
Burn-in screen device for magnetic latching relay Download PDFInfo
- Publication number
- CN202443109U CN202443109U CN2012200946787U CN201220094678U CN202443109U CN 202443109 U CN202443109 U CN 202443109U CN 2012200946787 U CN2012200946787 U CN 2012200946787U CN 201220094678 U CN201220094678 U CN 201220094678U CN 202443109 U CN202443109 U CN 202443109U
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- magnetic latching
- burn
- latching relay
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Abstract
The utility model relates to a burn-in screen device for a magnetic latching relay. The burn-in screen device is characterized by comprising a computer, a serial port server, an electric energy meter counting table and at least one testing tool, wherein the computer, the serial port server and the electric energy meter counting table are connected in sequence; at least one testing tool is connected with the electric energy meter counting table; the testing tool is provided with an interface for connecting a magnetic latching relay to be connected; and an acquiring module is arranged in each testing tool, and is used for controlling and acquiring information of the magnetic latching relay to be tested. The utility model provides a burn-in screen device for a magnetic latching relay, which is efficient, is convenient to use, has high generality and is particularly suitable for use in electric energy meter production; and the problem of burn-in screen of a magnetic latching relay for a single-phase cost control electric energy meter in the production of an electric energy meter is solved, so that the quality and service life of an electric energy meter product are ensured.
Description
Technical field
The utility model relates to a kind of magnetic latching relay burn-in screen device.
Background technology
After magnetic latching relay is a kind of removal energizing quantity; A kind of bistable relay of state in the time of still keeping excitation by the magnetic force that Hard Magnetic or half-hard magnetic material produce; Different with non-magnetic latching relay is after the action of contact, can excise drive current; The state of contact leans on permanent magnet that the suction of armature is kept, and therefore having coil power dissipation is zero remarkable advantage basically, in needing the single-phase expense control electric energy meter of electricity consumption control function, has obtained using widely.
Mostly the magnetic latching relay that single-phase expense control electric energy meter uses is the single channel high power relay; The load current that its contact is flow through can reach more than the 100A; Be that expense control electric energy meter most critical also is a weakest device of reliability; Its quality quality will directly influence the serviceable life of electric energy meter, therefore, tackle magnetic latching relay before use and will carry out strict burn-in screen; Reject unacceptable product; Be not fit to the magnetic latching relay burn-in screen device that electric energy meter manufacturer uses but have in the market, existing magnetic latching relay electric parameter tester also only is suitable for the pick test of stocking up that electric energy meter manufacturer carries out magnetic latching relay, can't be used for the burn-in screen under the actual condition.
The utility model content
The purpose of the utility model provides a kind of magnetic latching relay burn-in screen device, thereby can guarantee that the functional reliability of magnetic latching relay improves the product quality of using magnetic latching relay through burn-in screen.
A kind of magnetic latching relay burn-in screen device; Its special feature is; Comprise successively the computing machine, serial server and the electric energy meter that the connect platform of having good luck; Also comprise and electric energy meter at least one test fixture that platform is connected of having good luck, connect magnetic latching relay to be measured, magnetic latching relay to be measured is implemented control and information acquisition in each test fixture thereby acquisition module all is installed thereby this test fixture has interface.
Wherein acquisition module comprises microcontroller, and this microcontroller is connected with indicator light circuit with memory circuitry, relay contact contact drop value metering circuit, relay drive circuit, relay status testing circuit respectively.
Wherein microcontroller also is connected with the RS485 terminal of test fixture through a photoelectricity isolated communication circuit.
Wherein relay drive circuit also is connected with the relay status testing circuit with pilot relay, thereby said pilot relay links to each other with test fixture with relay contact contact drop value metering circuit the sampled signal Access Control is provided.
Wherein acquisition module comprises that also thereby power module provides working power for it.
The utility model discloses a kind of efficient, easy to use, versatility is good; Especially be fit to the magnetic latching relay burn-in screen device that electric energy meter production is used; Solve the burn-in screen problem of single-phase expense control electric energy meter magnetic latching relay during electric energy meter is produced, thereby guaranteed electric energy meter product quality and life-span.
Description of drawings
Accompanying drawing 1 is the schematic block circuit diagram of the utility model.
Embodiment
As shown in Figure 1; A kind of magnetic latching relay burn-in screen device; Comprise successively the computing machine, serial server and the electric energy meter that the connect platform of having good luck; Also comprise and electric energy meter at least one test fixture that platform is connected of having good luck, connect magnetic latching relay to be measured, magnetic latching relay to be measured is implemented control and information acquisition in each test fixture thereby acquisition module all is installed thereby this test fixture has interface.Thereby computing machine is connected with each acquisition module and realizes communication through serial server and the electric energy meter platform of having good luck; Thereby wherein serial server and electric energy meter have good luck set up between the platform the 1 tunnel communication thread to electric energy meter have good luck power source voltage, the electric current output of platform implement control, thereby and set up n+1 road communication thread between n acquisition module magnetic latching relay to be measured implemented to control and information acquisition.
Wherein acquisition module comprises microcontroller; This microcontroller is connected with indicator light circuit with memory circuitry, relay contact contact drop value metering circuit, relay drive circuit, relay status testing circuit respectively, and microcontroller also is connected with the RS485 terminal of test fixture through a photoelectricity isolated communication circuit; Relay drive circuit also is connected with the relay status testing circuit with pilot relay, thereby said pilot relay links to each other with test fixture with relay contact contact drop value metering circuit the sampled signal Access Control is provided; Acquisition module comprises that also thereby power module provides working power for it in addition.
As shown in Figure 1; Relay drive circuit also links to each other with the relay status testing circuit with the control line of a pilot relay; Contact one end of this midget relay links to each other with relay contact contact drop value metering circuit; Thereby the other end links to each other with the L-OU terminal of test fixture the sampled signal Access Control is provided, said power module provides required dc supply for the acquisition module circuit.
The 78F0513 single-chip microcomputer that microcontroller adopts NEC to produce, said storer adopts 24C04, is mainly used in storage module mailing address and configuration parameter.
Relay contact contact drop value metering circuit mainly comprises sampled signal modulate circuit, the out-of-limit holding circuit of signal, measured chip etc.; Wherein measured chip adopts RN8209 single-phase electric energy computation chip; The voltage measurement function of working voltage passage is carried out the measurement of relay contact contact drop value; Two current channels do not use and have done zero input processing; Sampled signal connects the voltage channel pin of RN8209 after signal conditioning circuit and the out-of-limit holding circuit of signal; RN8209 carries out autonomous measurement processing to the sampled signal of input; Measurement result is placed among the voltage effective value register URAMS and real-time update, and the value that microcontroller reads the voltage effective value register of RN8209 through spi bus can obtain the metrical information of relay contact contact drop value, and host computer can obtain the concrete data of relay contact contact drop value and contact resistance under the given operating mode through certain calculation process and then as the foundation of screening judgement; The out-of-limit holding circuit of said sampled signal adopts the TVS pipe, is attempted by between the voltage channel two pins of RN8209, prevents that sampled signal from transfiniting and damage the RN8209 chip.
Relay drive circuit comprises driving circuit two parts of drive circuit of magnetic latching relay and miniature pilot relay; Wherein drive circuit of magnetic latching relay adopts the 6 pipe anti-collision relay drive circuits that elements such as switch triode, diode, resistance are formed; Under the control of microcontroller; The driving voltage of certain orientation is applied to magnetic latching relay coil two ends, magnetic latching relay contacts status to be measured is changed; The driving circuit of miniature pilot relay comprises 2 triodes, 1 diode and some resistance; Wherein the base stage of 1 triode enables to control pin through the sampling of current-limiting resistance and microcontroller and links to each other; The base stage of 1 triode links to each other with the state detection signal output of relay status testing circuit through current-limiting resistance in addition; Have only under the situation of 2 equal conductings of triode; The control coil of miniature pilot relay gets electronic work; Break contact is closed, promptly has only magnetic latching relay to be measured contact to enable under the effective situation of control signal at closure state and microcontroller sampling, thereby miniature pilot relay just can get electric adhesive sampled signal and relay contact contact drop value metering circuit is connected.
The relay status testing circuit mainly is made up of 2 optocouplers, some resistance and electric capacity; During the magnetic latching relay closing of contact to be measured, output terminal L-OU has voltage, the optocoupler conducting; When magnetic latching relay to be measured contact is broken off; Output terminal L-OU no-voltage, optocoupler ends, and microcontroller is promptly known the on off operating mode of relay contact through the level state of inquiring about the detection line that links to each other with the optocoupler output terminal.
Use the utility model burn-in screen device when carrying out the burn-in screen of magnetic latching relay; Operating personnel select the burn-in screen scheme at first on computers; Then with pack into test fixture and magnetic latching relay drive coil terminal pin inserted the relay control accessory power outlet of test fixture of magnetic latching relay; Then click the testing button of said software platform, computing machine shows the burn-in screen result according to the burn-in screen scheme program execution command process that is provided with in advance after accomplishing.
Below be the implementation of a concrete burn-in screen scheme case of the utility model:
The first step; Computing machine sends the adjustment order of " voltage 220V, electric current 0, power factor (PF) 1 " source to the electric energy meter platform of having good luck; Electric energy meter have good luck platform output voltage 220V, electric current 0, acquisition module powers on and brings into operation, and upgrades the state of tripping operation pilot lamp according to relay contact state-detection result.
In second step, computing machine sends " tripping operation " order to acquisition module, and the single-chip microcomputer of acquisition module is received the pilot relay action of instruction back, upgrades the state of tripping operation pilot lamp and the result is sent to computing machine according to relay contact state-detection result then.
In the 3rd step, computing machine sends to acquisition module that " " the pilot relay action of instruction back is received in order, the single-chip microcomputer of acquisition module to combined floodgates, upgrades according to relay contact state-detection result then and trips the state of pilot lamp and the result sent to computing machine.
In the 4th step, computing machine sends the adjustment order of " voltage 149V, electric current 0, power factor (PF) 1 " source to the electric energy meter platform of having good luck, electric energy meter have good luck platform output voltage 149V, electric current 0.
In the 5th step, computing machine sends to acquisition module that " " the pilot relay action of instruction back is received in order, the single-chip microcomputer of acquisition module, upgrades according to relay contact state-detection result then and trips the state of pilot lamp and the result sent to computing machine in tripping operation.
In the 6th step, computing machine sends to acquisition module that " " the pilot relay action of instruction back is received in order, the single-chip microcomputer of acquisition module to combined floodgates, upgrades according to relay contact state-detection result then and trips the state of pilot lamp and the result sent to computing machine.
The 7th step; Computing machine sends the adjustment order of " voltage 220V, electric current 20A, power factor (PF) 1 " source to the electric energy meter platform of having good luck; Electric energy meter is had good luck and is adjusted source output voltage 220V, electric current 20A after platform is received order, and magnetic latching relay to be measured contact begins to wear out through electric current.
The 8th step; After digestion time arrives; Computing machine issues the acquisition of " 1 second SI, sampling number 5 times " to acquisition module, and after the single-chip microcomputer of acquisition module received orders, at first the contacts status of magnetic latching relay to be measured was confirmed in inspection; Pilot lamp is lighted if off-state then will trip; And relay contact state-detection result sent to computing machine, and to gather enable signal effective if closure state is then put, thus miniature pilot relay gets electric adhesive with sampled signal and the connection of relay contact contact drop value metering circuit; Through after the certain time-delay; Value 5 times and packing with the voltage effective value register that read at interval RN8209 in 1 second continuously send to computing machine, and will put then and gather enable signal is disarmed state, thereby miniature pilot relay dead electricity is with contact contact drop value sampled signal line and the disconnection of measured chip pin.
The 9th step; Computing machine carries out judgment processing and shows the burn-in screen result according to the above operating result that respectively goes on foot; Afterwards, send the adjustment order of " voltage 0, electric current 0, power factor (PF) 1 " source to the electric energy meter platform sending computer of having good luck to the electric energy meter platform of having good luck, device electricity down is out of service.
Claims (5)
1. magnetic latching relay burn-in screen device; It is characterized in that: comprise successively the computing machine, serial server and the electric energy meter that the connect platform of having good luck; Also comprise and electric energy meter at least one test fixture that platform is connected of having good luck; Thereby this test fixture has interface and connects magnetic latching relay to be measured, thereby acquisition module all is installed in each test fixture magnetic latching relay to be measured is implemented control and information acquisition.
2. magnetic latching relay burn-in screen device as claimed in claim 1; It is characterized in that: wherein acquisition module comprises microcontroller, and this microcontroller is connected with indicator light circuit with memory circuitry, relay contact contact drop value metering circuit, relay drive circuit, relay status testing circuit respectively.
3. magnetic latching relay burn-in screen device as claimed in claim 1 is characterized in that: wherein microcontroller also is connected with the RS485 terminal of test fixture through a photoelectricity isolated communication circuit.
4. magnetic latching relay burn-in screen device as claimed in claim 1; It is characterized in that: wherein relay drive circuit also is connected with the relay status testing circuit with pilot relay, thereby said pilot relay links to each other with test fixture with relay contact contact drop value metering circuit the sampled signal Access Control is provided.
5. like any described magnetic latching relay burn-in screen device in the claim 1 to 4, it is characterized in that: thus wherein acquisition module comprises that also power module provides working power for it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200946787U CN202443109U (en) | 2012-03-14 | 2012-03-14 | Burn-in screen device for magnetic latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200946787U CN202443109U (en) | 2012-03-14 | 2012-03-14 | Burn-in screen device for magnetic latching relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202443109U true CN202443109U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200946787U Expired - Fee Related CN202443109U (en) | 2012-03-14 | 2012-03-14 | Burn-in screen device for magnetic latching relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202443109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008292A (en) * | 2017-11-27 | 2018-05-08 | 上海航天测控通信研究所 | A kind of magnetic latching relay ageing detection automatics and automatic testing method |
| CN108490815A (en) * | 2018-06-30 | 2018-09-04 | 安徽华立远望智能科技有限公司 | A kind of multichannel central control device |
| CN109062108A (en) * | 2018-08-25 | 2018-12-21 | 安徽华立远望智能科技有限公司 | The control system and control method of the fixed intelligent protection red card of special purpose railroad |
-
2012
- 2012-03-14 CN CN2012200946787U patent/CN202443109U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008292A (en) * | 2017-11-27 | 2018-05-08 | 上海航天测控通信研究所 | A kind of magnetic latching relay ageing detection automatics and automatic testing method |
| CN108490815A (en) * | 2018-06-30 | 2018-09-04 | 安徽华立远望智能科技有限公司 | A kind of multichannel central control device |
| CN109062108A (en) * | 2018-08-25 | 2018-12-21 | 安徽华立远望智能科技有限公司 | The control system and control method of the fixed intelligent protection red card of special purpose railroad |
| CN109062108B (en) * | 2018-08-25 | 2024-05-28 | 李�诚 | Control system and control method for railway special line fixed intelligent protection red cards |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20140314 |