CN204030552U - The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering - Google Patents
The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering Download PDFInfo
- Publication number
- CN204030552U CN204030552U CN201420506826.0U CN201420506826U CN204030552U CN 204030552 U CN204030552 U CN 204030552U CN 201420506826 U CN201420506826 U CN 201420506826U CN 204030552 U CN204030552 U CN 204030552U
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- experiment
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- experiment frame
- discharge circuit
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Abstract
The utility model provides the topple over breaker device of a kind of Experiment of Electrical Engineering with experiment frame, and the AC power of experiment frame is connected with air switch, and device comprises angular transducer, discharge circuit, JK flip-flop, relay, bridge rectifier, transformer; The AC power of experiment frame is converted to direct current by transformer, bridge rectifier, the negative input end of discharge circuit connects direct-flow positive pole end by an adjustable variable resistance, the signal output part of angular transducer is connected with the positive input terminal of discharge circuit, the output of discharge circuit is connected with the Sd signal end of JK flip-flop, the Rd signal end of JK flip-flop is by a grounding through resistance, and the output of JK flip-flop is connected with the AC power of experiment frame by relay, air switch.The utility model can be eliminated because experiment frame is toppled over the electric shock hidden danger of bringing.
Description
Technical field
The utility model relates to a kind of shock preventing protector of electric, particularly the breaker device of toppling over of experiment frame for a kind of Experiment of Electrical Engineering.
Background technology
For improving student's the ability of practice, as the compulsory course of electricity specialty, electrical teaching and corresponding Experiment of Electrical Engineering have been subject to the extensive attention of many colleges and universities.In Experiment of Electrical Engineering chamber, be generally equipped with metal experiment frame, this experiment frame, by 220V AC-powered, is furnished with some power supplys, terminal on experiment frame, and when experiment frame is toppled over accidentally, exposed wire can increase Danger Electric shock risk.
In addition, manage for convenience the power supply of a plurality of experiment frames, generally use an air switch to connect the power supply of controlling a plurality of experiment frames, when using the air switch of larger current limliting, can increase potential safety hazard again.
Utility model content
In view of the foregoing, the purpose of this utility model is to provide the topple over breaker device of a kind of Experiment of Electrical Engineering with experiment frame, this device can, when experiment frame tilts certain angle, cut off the power supply of experiment frame, and then can eliminate experiment frame and topple over the electric shock hidden danger of bringing.
For achieving the above object, the utility model is by the following technical solutions:
The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering, the AC power of experiment frame is connected with air switch, it is characterized in that, and device comprises angular transducer, discharge circuit, JK flip-flop, relay, bridge rectifier, transformer;
The AC power of experiment frame is converted to direct current by this transformer, bridge rectifier,
The negative input end of this discharge circuit connects direct-flow positive pole end by an adjustable variable resistance, the signal output part of this angular transducer is connected with the positive input terminal of this discharge circuit, the output of this discharge circuit is connected with the Sd signal end of this JK flip-flop, the Rd signal end of this JK flip-flop is by a grounding through resistance, and the output of this JK flip-flop is connected with the AC power of experiment frame by this relay, described air switch.
Further,
The Rd signal end of described JK flip-flop also connects a reset key.
Described JK flip-flop is used CC4027 or CD4027 type JK flip-flop.
The utility model has the advantage of:
The utility model can automatically cut off the power supply of experiment frame when experiment frame tilts certain angle, has eliminated experiment frame and has toppled over the electric shock hidden danger of bringing.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is circuit theory diagrams of the present utility model.As shown in the figure, the breaker device of toppling over of experiment frame for the disclosed Experiment of Electrical Engineering of the utility model, comprises angular transducer 1, discharge circuit 2, JK flip-flop 3, relay 4, bridge rectifier 5, transformer 6; The 220V AC power of experiment frame is processed and is converted to direct current by transformer 6, bridge rectifier 5, is used to angular transducer 1, discharge circuit 2, JK flip-flop 3 that working power is provided;
Specifically, the negative input end of discharge circuit 2 hinders R1 by adjustable variable and connects direct-flow positive pole end, the signal output part of angular transducer 1 is connected with the positive input terminal of discharge circuit 2, the output of discharge circuit 2 is connected with the Sd signal end of JK flip-flop 3, the Rd signal end of JK flip-flop 3 is by resistance R 2 ground connection, and the output of JK flip-flop 3 is connected with the power supply of experiment frame by relay, air switch;
The top that device of the present utility model is positioned over to experiment frame is the angle of inclination of sensing experiment frame fully.Adjustable variable resistance R1 is used to discharge circuit 2 that reference voltage is provided, and the resistance of adjusting adjustable variable resistance R1 can change reference voltage value accordingly;
Angular transducer 1 is exported corresponding voltage signal according to the angle of inclination of experiment frame, and voltage signal is inputted to discharge circuit 2, when experiment frame angle of inclination is less than predetermined value, the voltage signal of angular transducer 1 output is less than reference voltage value, discharge circuit 2 output low level signals, now, Sd signal end and the Rd signal end of JK flip-flop 3 are low level, the output end signal of JK flip-flop 3 keeps, and relay 4 is failure to actuate, experiment frame normal power supply; When experiment frame angle of inclination is greater than predetermined value, the voltage signal of angular transducer 1 output is greater than reference voltage value, discharge circuit 2 output high level signals, the Sd signal end of JK flip-flop 3 is high level, Rd signal end is low level, JK flip-flop 3 output high level signals, relay 4 moves, and cuts off the power supply of experiment frame by air switch.
The Rd signal end of JK flip-flop 3 also connects a reset key An, by after experiment frame righting, after safety inspection, press reset key An, the Rd signal end that makes JK flip-flop is high level, and the output signal of JK flip-flop is overturn, and recloses the power supply of experiment frame by relay, air switch.
In specific embodiment, JK flip-flop use CC4027 (CD4027 also can) type JK flip-flop all can, its J, K, CLK end can connect direct-flow positive pole end and also can not connect; Discharge circuit is used LM324A type discharge circuit, and relay uses electromagnetic type relay; Angular transducer uses gyroscope ENC-03MB.What the air switch of experiment frame used is DZ47-63 type air switch.
The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering of the present utility model, by the angle of inclination of angular transducer sensing experiment frame, and by discharge circuit, JK flip-flop output control signal, opening or closing, connection or the power supply of disconnection experiment frame by control relay.Because the experiment frame in Experiment of Electrical Engineering chamber is laid with some exposed live wires, there is Danger Electric shock risk, utilize the utility model can when experiment frame is toppled over, cut off experiment frame power supply, eliminate experiment frame and topple over the electric shock hidden danger of bringing.
The above is preferred embodiment of the present utility model and the know-why used thereof; for a person skilled in the art; in the situation that not deviating from spirit and scope of the present utility model; the apparent changes such as any equivalent transformation based on technical solutions of the utility model basis, simple replacement, within all belonging to the utility model protection range.
Claims (3)
1. the breaker device of toppling over of experiment frame for Experiment of Electrical Engineering, the AC power of experiment frame is connected with air switch, it is characterized in that, and device comprises angular transducer, discharge circuit, JK flip-flop, relay, bridge rectifier, transformer;
The AC power of experiment frame is converted to direct current by this transformer, bridge rectifier,
The negative input end of this discharge circuit connects direct-flow positive pole end by an adjustable variable resistance, the signal output part of this angular transducer is connected with the positive input terminal of this discharge circuit, the output of this discharge circuit is connected with the Sd signal end of this JK flip-flop, the Rd signal end of this JK flip-flop is by a grounding through resistance, and the output of this JK flip-flop is connected with the AC power of experiment frame by this relay, described air switch.
2. the breaker device of toppling over of experiment frame for Experiment of Electrical Engineering as claimed in claim 1, is characterized in that, the Rd signal end of described JK flip-flop also connects a reset key.
3. the breaker device of toppling over of experiment frame for Experiment of Electrical Engineering as claimed in claim 1 or 2, is characterized in that, described JK flip-flop is used CC4027 or CD4027 type JK flip-flop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506826.0U CN204030552U (en) | 2014-09-03 | 2014-09-03 | The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506826.0U CN204030552U (en) | 2014-09-03 | 2014-09-03 | The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030552U true CN204030552U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420506826.0U Expired - Fee Related CN204030552U (en) | 2014-09-03 | 2014-09-03 | The breaker device of toppling over of experiment frame for Experiment of Electrical Engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI731255B (en) * | 2018-08-08 | 2021-06-21 | 緯創資通股份有限公司 | Relay adaptive to alternative current and direct current input signals |
-
2014
- 2014-09-03 CN CN201420506826.0U patent/CN204030552U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI731255B (en) * | 2018-08-08 | 2021-06-21 | 緯創資通股份有限公司 | Relay adaptive to alternative current and direct current input signals |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |