CN202421446U - Relay contact action detection circuit - Google Patents
Relay contact action detection circuit Download PDFInfo
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- CN202421446U CN202421446U CN2011205132668U CN201120513266U CN202421446U CN 202421446 U CN202421446 U CN 202421446U CN 2011205132668 U CN2011205132668 U CN 2011205132668U CN 201120513266 U CN201120513266 U CN 201120513266U CN 202421446 U CN202421446 U CN 202421446U
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- detection circuit
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Abstract
The utility model relates to a relay contact action detection circuit, which can effectively solve the problem that at present, the detection equipment for idle contact action output of a relay of a protection device is insufficient. The scheme is that the detection circuit includes a power supply circuit 1, a relay normally closed contact SK1 action detection circuit 2, and a relay normally open contact K1 action detection circuit 3. The detection circuit is characterized in that the power supply circuit respectively outputs two ways of common grounded GND DC voltage +5V and DC voltage -5V; the DC voltage +5V is connected with the relay normally closed contact SK1 action detection circuit 2; the DC voltage -5V is connected with the relay normally open contact K1 action detection circuit 3; and the common terminals COM of the relay normally closed contact SK1 action detection circuit 2 and the relay normally open contact K1 action detection circuit 3 as well as the common grounded COM terminal of the power supply are connected with a reset button AN1 in series. The relay contact action detection circuit has a unique structure, is convenient to use, has excellent effect, and is innovative for the relay output idle contact action detection circuit.
Description
One, technical field
The utility model relates to electronic circuit field, particularly a kind of a kind of circuit for testing action of relay contact that is used for protective device relay output idle contact motion detection.
Two, background technology
In production, debugging and the field adjustable process of substation relay protection device; Heavy rain will detect protective device relay output idle contact action situation; Contact operate as normal when using with assurance; Conventional detection, the one, when manual work is moved with the multimeter measuring relay, the closure of output contact and disconnection.The 2nd, on protective device relay output contact, insert pilot lamp; Differentiate the actuating of relay through whether bright pilot lamp is, because protective device has many relay output contacts, manual work is measured one by one or is observed pilot lamp all very slow one by one; And must write the special test program; The output action of relay is prolonged, and ability assurance and manual measurement or observation are wasted time and energy synchronously.There is shortcoming: very fast because of actuating of relay speed, about about 10 milliseconds,, measure or the observation pilot lamp all compare difficult through multimeter when pickup time that relay keeps during less than 200 milliseconds.For example, tripping operation, the combined floodgate output contact of protective device output, at most also with regard to a few tens of milliseconds, said method just can't detect like this.
Three, summary of the invention
To above-mentioned situation, for overcoming the defective of prior art, the purpose of the utility model just provides a kind of circuit for testing action of relay contact, can effectively solve at present the problem to the deficiency of the checkout equipment of protective device relay output idle contact action.
The technical scheme of its solution is; Comprise power circuit 1, relay normally closed contact SK1 motion detector circuit 2, relay normally open contact K1 motion detector circuit 3; It is characterized in that: described power circuit is exported two-way DC voltage+5V, the DC voltage-5V of GND altogether respectively, and DC voltage+5V links to each other with relay normally closed contact SK1 motion detector circuit 2, DC voltage-5V links to each other with relay normally open contact K1 motion detector circuit 3; The common port COM of described relay normally closed contact SK1 motion detector circuit 2, relay normally open contact K1 motion detector circuit 3 and the public ground COM of power supply end string have SR AN1.
The utility model structure is unique, easy to use, effective, is the innovation on the relay output idle contact motion detector circuit.
Four, description of drawings
Fig. 1 is the annexation figure of each parts of circuit of the utility model.
Five, embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further explain.
Provide by Fig. 1; The utility model comprises power circuit 1, relay normally closed contact SK1 motion detector circuit 2, relay normally open contact K1 motion detector circuit 3; It is characterized in that: described power circuit is exported two-way DC voltage+5V, the DC voltage-5V of GND altogether respectively, and DC voltage+5V links to each other with relay normally closed contact SK1 motion detector circuit 2, DC voltage-5V links to each other with relay normally open contact K1 motion detector circuit 3; The common port COM of described relay normally closed contact SK1 motion detector circuit 2, relay normally open contact K1 motion detector circuit 3 and the public ground COM of power supply end string have SR AN1.
In order to guarantee result of use, said relay normally closed contact SK1 motion detector circuit 2, by the end of light emitting diode D1 with meet power supply source end+5V after an end of resistance R 1 is connected; The other end of light emitting diode D1 is connected with resistance R 3 one ends; Resistance R 3 other ends link to each other with the anode of controllable silicon G1; After one end of the end of resistance R 1 other end and normally closed contact SK1, an end of capacitor C 1 and resistance R 2 is connected, be connected on the control utmost point of controllable silicon G1; The other end of the other end of the other end of the negative electrode of controllable silicon G1, normally closed contact SK1, capacitor C 1 and resistance R 2 is connected on common port COM after connecting.
Said relay normally open contact K1 motion detector circuit 3 with after the end of normal opened contact K1 is connected, is connected on common port COM by the end of light emitting diode D11; The other end of light emitting diode D11 is connected with resistance R 31 1 ends; Resistance R 31 other ends link to each other with the anode of controllable silicon G11; Resistance R 11 1 ends are connected with the other end of normal opened contact K1; After one end of the other end of resistance R 11, capacitor C 21 and an end of resistance R 21 connect, be connected on the control utmost point of controllable silicon G11; The other end of the other end of the negative electrode of controllable silicon G11, capacitor C 21 and resistance R 21 meets power supply source end-5V after connecting, and SR AN1-end is connected with common port COM, and the other end links to each other with the common GND of power supply.
The action of relay contact catching circuits that uses controllable silicon to form; Be composed in series contact action indicating circuit by one-way SCR GI; Normally closed contact SK1 to be detected is connected between silicon controlled trigger electrode and the negative electrode, and normal opened contact K1 to be detected is serially connected in the high voltage end of silicon controlled trigger circuit and its power supply source.
The circuit working process of the utility model is that power circuit 1 is respectively circuit 2 and provides+the 5V working power, for circuit 3 provides-the 5V working power.
The circuit 2 of the utility model is a relay normally closed contact SK1 motion detector circuit, is composed in series contact action indicating circuit by light emitting diode D1, resistance R 3 and one-way SCR G1; Resistance R 1, R2 and capacitor C 1 are formed the trigger circuit of one-way SCR G1, after relay normally closed contact SK1 and resistance R 2, capacitor C 1 are parallelly connected, are connected between the trigger electrode and negative electrode of controllable silicon G1; After above-mentioned contact action indicating circuit and the trigger circuit parallel connection; By+power supply of 5V power supply, behind power connection, circuit 2 acquisitions work+5V working power; Because normally closed contact SK1 to be detected is closed; The trigger voltage that power supply is provided to the controllable silicon G1 control utmost point through resistance R 1 is by short circuit, so not conducting of controllable silicon G1, and light emitting diode D1 does not work; After the actuating of relay, normally closed contact SK1 breaks off, and+5V working power gives capacitor C 1 charging through resistance R 1; The control pole tension of controllable silicon G1 is risen, after this voltage is greater than the silicon controlled cut-in voltage, controllable silicon G1 conducting; Light emitting diode D1 lights, and expression normally closed contact SK1 breaks off.Can know by the silicon controlled characteristic, in case its conducting, as long as by its operating current greater than its electric current of keeping, it utilizes the fast detecting and the memory of this characteristic realization actuating of relay just with conducting always.Even return again behind the action of relay contact, but the circuit result behind the display action still.Capacitor C 1 is used to eliminate the vibration of relay tip, guarantees that after the contact action message, controllable silicon G1 could trigger and conducting, and resistance R 2 is used for the limit trigger voltage magnitude.
The circuit 3 of the utility model is the relay normally open contact motion detector circuit, and circuit theory and circuit 2 are basic identical, and difference is that the normal opened contact K1 of relay is serially connected between the trigger circuit resistance R 11 of common port COM end and controllable silicon G11.When the actuating of relay, its normal opened contact K1 is closed, makes the work of controllable silicon G11 trigger circuit, controllable silicon G11 conducting, and light emitting diode D11 lights, and K1 is closed for the expression normal opened contact.In like manner, even return again behind the action of relay contact, but the circuit result behind the display action still.
The normally closed contact SK1 motion detector circuit 2 of the relay of the utility model, relay normally open connect K1 point action testing circuit 3 respectively uses+5V and-5V two-way power supply supplies power; At the common of the connection common port COM of two circuit end with power supply; String has normally closed button AN1; Be used to remove the information of action of relay contact, make circuit reset.When button AN1 pressed, the normally closed contact SK1 motion detector circuit 2 of relay, relay normally open connect the power supply of K1 point action testing circuit 3 and all break off, and are used to indicate light emitting diode D1, the D11 of the actuating of relay to extinguish.When unclamping AN1, the normally closed contact SK1 motion detector circuit 2 of relay, relay normally open connect K1 point action testing circuit 3 and restore electricity again, owing to controllable silicon G1, the equal Triggerless of G11; Maintenance by; Not conducting, light emitting diode D1, D11 still extinguish, and can carry out detecting next time test.
For protective device, there are a lot of relay output idle contacts to need to detect, for normally closed contact SK1, as long as with circuit more than 2 group parallel connections; Detect for normal opened contact K1, as long as with circuit more than 3 group parallel connections, when resetting, a still available button AN1 resets.
The utility model can the fast detecting contact action, and memory the result of the action is so that judge the action situation.
The electrical equipment that the utility model adopts: power module AC/DC is that JWA-2.5D5N type, unidirectional controlled G11 are that MCR100-8 type, light emitting diode D1 are that Φ 5 red luminotrons, light emitting diode D11 are that Φ 5 green luminotrons, capacitor C 1 are RJ14-1K for RJ14-1K, resistance R 11 for RJ14-3.9K, resistance R 21 for RJ14-3.9K, resistance R 2 for 0.1uf/25V, resistance R 1.
Claims (3)
1. circuit for testing action of relay contact; Comprise power circuit, relay normally closed contact SK1 motion detector circuit 2, relay normally open contact K1 motion detector circuit 3; It is characterized in that: described power circuit is exported two-way DC voltage+5V, the DC voltage-5V of GND altogether respectively; DC voltage+5V links to each other with relay normally closed contact SK1 motion detector circuit (2); DC voltage-5V links to each other with relay normally open contact K1 motion detector circuit (3), and the common port COM of relay normally closed contact SK1 motion detector circuit (2), relay normally open contact K1 motion detector circuit (3) and the public ground COM of power supply end string have SR AN1.
2. circuit for testing action of relay contact according to claim 1 is characterized in that, said relay normally closed contact SK1 motion detector circuit (2), by the end of light emitting diode D1 with meet power supply source end+5V after an end of resistance R 1 is connected; The other end of light emitting diode D1 is connected with resistance R 3 one ends; Resistance R 3 other ends link to each other with the anode of controllable silicon G1; After one end of the end of resistance R 1 other end and normally closed contact SK1, an end of capacitor C 1 and resistance R 2 is connected, be connected on the control utmost point of controllable silicon G1; The other end of the other end of the other end of the negative electrode of controllable silicon G1, normally closed contact SK1, capacitor C 1 and resistance R 2 is connected on common port COM after connecting.
3. circuit for testing action of relay contact according to claim 1 is characterized in that, said relay normally open contact K1 motion detector circuit (3) with after the end of normal opened contact K1 is connected, is connected on common port COM by the end of light emitting diode D11; The other end of light emitting diode D11 is connected with resistance R 31 1 ends; Resistance R 31 other ends link to each other with the anode of controllable silicon G11; Resistance R 11 1 ends are connected with the other end of normal opened contact K1; After one end of the other end of resistance R 11, capacitor C 21 and an end of resistance R 21 connect, be connected on the control utmost point of controllable silicon G11; The other end of the other end of the negative electrode of controllable silicon G11, capacitor C 21 and resistance R 21 meets power supply source end-5V after connecting, and SR AN1-end is connected with common port COM, and the other end links to each other with the common GND of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205132668U CN202421446U (en) | 2011-12-12 | 2011-12-12 | Relay contact action detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205132668U CN202421446U (en) | 2011-12-12 | 2011-12-12 | Relay contact action detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421446U true CN202421446U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205132668U Expired - Fee Related CN202421446U (en) | 2011-12-12 | 2011-12-12 | Relay contact action detection circuit |
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| CN (1) | CN202421446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291340A (en) * | 2015-05-29 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | There is the relay of fault cues function |
-
2011
- 2011-12-12 CN CN2011205132668U patent/CN202421446U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291340A (en) * | 2015-05-29 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | There is the relay of fault cues function |
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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: 20120905 Termination date: 20121212 |