CN204833596U - Be close protection warning circuit - Google Patents
Be close protection warning circuit Download PDFInfo
- Publication number
- CN204833596U CN204833596U CN201520528065.3U CN201520528065U CN204833596U CN 204833596 U CN204833596 U CN 204833596U CN 201520528065 U CN201520528065 U CN 201520528065U CN 204833596 U CN204833596 U CN 204833596U
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- Prior art keywords
- resistance
- triode
- connects
- electric capacity
- potentiometer
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- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a be close protection warning circuit, including resistance R1, switch S1, power E and loudspeaker B, power E's anodal linked switch S1, switch S1's one end connecting resistance R1, resistance R2, resistance R4, resistance R7, triode V4's collecting electrode, chip IC1's pin 5 and chip IC1's pin 6, electric capacity C3, diode D1's positive pole and triode V1's base are connected to resistance R1's the other end. The utility model discloses be close protection warning circuit simple structure, components and parts are few, and the product of producing is small, can place inside not had the object of touching by the people easily, and when the human body gets into the safe distance of alarm, will trigger circuit, send the chimes of doom, the people leaves that the back is automatic turn -offs, consequently has the proximity sensing, the cost of manufacture is low and small advantage.
Description
Technical field
The utility model relates to a kind of warning circuit, specifically a kind of close to protective alarming circuit.
Background technology
The various electrical equipment of daily life all be unable to do without electric energy, as everyone knows, voltage will cause damage to human body at more than 36V, cause electric shock accidents, and a lot of child does not have the awareness of safety of this respect, therefore likely can touch the electrified body such as power transformation box, power distribution cabinet that the plug of family, insert row or roadside are arranged, cause electrical shock safety accident.
Utility model content
The purpose of this utility model be to provide a kind of structure simple, easy to use close to protective alarming circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of close to protective alarming circuit, comprise resistance R1, switch S 1, power supply E and loudspeaker B, the positive pole connecting valve S1 of described power supply E, one end contact resistance R1 of switch S 1, resistance R2, resistance R4, resistance R7, the collector of triode V4, the pin 5 of chip IC 1 and the pin 6 of chip IC 1, the other end of resistance R1 connects electric capacity C3, the anode of diode D1 and the base stage of triode V1, the other end of resistance R2 connects the collector of electric capacity C2 and triode V1, the other end of electric capacity C2 connects electric capacity C1 and inductance L 1, the other end of inductance L 1 connects the other end and the induced electricity pole piece A of electric capacity C3, the negative pole of power supply E connects the other end of electric capacity C1, electric capacity C4, electric capacity C5, electric capacity C5, loudspeaker B, a stiff end of potentiometer RP1, the emitter of triode V2 and the emitter of triode V3, the negative electrode of diode D1 connects another stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the other end contact resistance R5 of resistance R4 and the collector of triode V2, the base stage of the other end connecting triode V4 of resistance R5, the base stage of the emitter connecting triode V3 of triode V4, the collector of triode V3 connects the pin 2 of chip IC 1, the pin 3 of chip IC 1 connects a stiff end of potentiometer RP2, another stiff end of potentiometer RP2 connects the sliding end of potentiometer RP2 and the base stage of triode V5, the collector of triode V5 connects a stiff end of potentiometer RP3, the emitter of triode V5 connects the other end of loudspeaker B, another stiff end of potentiometer RP3 connects the sliding end of potentiometer RP3 and the other end of resistance R7.
As preferred version of the present utility model: described power supply E is 4 joint 1.5V dry cells.
As preferred version of the present utility model: the model of described chip IC 1 is CW9561.
Compared with prior art, the beneficial effects of the utility model are: the utility model is simple close to protective alarming circuit structure, components and parts are few, the small product size produced is little, can be placed on easily by the interior of articles of people's touchless, in time having human body to enter the safe distance of alarm, will trigger circuit, send chimes of doom, people automatically shuts down after leaving, and therefore has proximity sensing, cost of manufacture is low and volume is little advantage.
Accompanying drawing explanation
Fig. 1 is the circuit diagram close to protective alarming circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of close to protective alarming circuit, comprise resistance R1, switch S 1, power supply E and loudspeaker B, the positive pole connecting valve S1 of described power supply E, one end contact resistance R1 of switch S 1, resistance R2, resistance R4, resistance R7, the collector of triode V4, the pin 5 of chip IC 1 and the pin 6 of chip IC 1, the other end of resistance R1 connects electric capacity C3, the anode of diode D1 and the base stage of triode V1, the other end of resistance R2 connects the collector of electric capacity C2 and triode V1, the other end of electric capacity C2 connects electric capacity C1 and inductance L 1, the other end of inductance L 1 connects the other end and the induced electricity pole piece A of electric capacity C3, the negative pole of power supply E connects the other end of electric capacity C1, electric capacity C4, electric capacity C5, electric capacity C5, loudspeaker B, a stiff end of potentiometer RP1, the emitter of triode V2 and the emitter of triode V3, the negative electrode of diode D1 connects another stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the other end contact resistance R5 of resistance R4 and the collector of triode V2, the base stage of the other end connecting triode V4 of resistance R5, the base stage of the emitter connecting triode V3 of triode V4, the collector of triode V3 connects the pin 2 of chip IC 1, the pin 3 of chip IC 1 connects a stiff end of potentiometer RP2, another stiff end of potentiometer RP2 connects the sliding end of potentiometer RP2 and the base stage of triode V5, the collector of triode V5 connects a stiff end of potentiometer RP3, the emitter of triode V5 connects the other end of loudspeaker B, another stiff end of potentiometer RP3 connects the sliding end of potentiometer RP3 and the other end of resistance R7.
Power supply E is 4 joint 1.5V dry cells.The model of chip IC 1 is CW9561.
Principle of work of the present utility model is: circuit is made up of inductor, capacitor oscillator, four tones of standard Chinese pronunciation Analogous Integrated Electronic Circuits IC1, loudspeaker B, power circuit etc.Capacitor oscillator is made up of L1, C1, V1 and the distributed capacitance C4 between induced electricity pole piece A and ground.From interchange, electric capacity C1 and C2 is in series.Under normal circumstances, as unmanned close A, C1 is less, and the HF voltage at corresponding C2 two ends is comparatively large, and it feeds back to the base stage of V1 through C3, thus is enough to maintain oscillator vibrates.Meanwhile, the high voltage on resistance R3 makes V2 conducting, V3 and V4 ends, and has cut off the power circuit of chip IC 1, has caused IC1 not work, loudspeaker B not sounding.When there being people near A, C2 increases, and its high-end voltage reduces and is not enough to maintain V1 conducting.When after the cut-off of V1 pipe, corresponding V2 pipe cut-off, complex pipe V3 and V4 conducting, the power circuit of IC1 is connected, and IC1 works, and 3 pin export siren signal.This signal promotes loudspeaker B and sends chimes of doom after V5 amplifies.Induction sensitivity realizes by regulator potentiometer RP1, and the size of warning police whistle sound realizes by regulator potentiometer RP3.
Claims (3)
1., close to a protective alarming circuit, comprise resistance R1, switch S 1, power supply E and loudspeaker B, it is characterized in that, the positive pole connecting valve S1 of described power supply E, one end contact resistance R1 of switch S 1, resistance R2, resistance R4, resistance R7, the collector of triode V4, the pin 5 of chip IC 1 and the pin 6 of chip IC 1, the other end of resistance R1 connects electric capacity C3, the anode of diode D1 and the base stage of triode V1, the other end of resistance R2 connects the collector of electric capacity C2 and triode V1, the other end of electric capacity C2 connects electric capacity C1 and inductance L 1, the other end of inductance L 1 connects the other end and the induced electricity pole piece A of electric capacity C3, the negative pole of power supply E connects the other end of electric capacity C1, electric capacity C4, electric capacity C5, electric capacity C5, loudspeaker B, a stiff end of potentiometer RP1, the emitter of triode V2 and the emitter of triode V3, the negative electrode of diode D1 connects another stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the other end contact resistance R5 of resistance R4 and the collector of triode V2, the base stage of the other end connecting triode V4 of resistance R5, the base stage of the emitter connecting triode V3 of triode V4, the collector of triode V3 connects the pin 2 of chip IC 1, the pin 3 of chip IC 1 connects a stiff end of potentiometer RP2, another stiff end of potentiometer RP2 connects the sliding end of potentiometer RP2 and the base stage of triode V5, the collector of triode V5 connects a stiff end of potentiometer RP3, the emitter of triode V5 connects the other end of loudspeaker B, another stiff end of potentiometer RP3 connects the sliding end of potentiometer RP3 and the other end of resistance R7.
2. one according to claim 1 is close to protective alarming circuit, it is characterized in that, described power supply E is 4 joint 1.5V dry cells.
3. one according to claim 1 is close to protective alarming circuit, it is characterized in that, the model of described chip IC 1 is CW9561.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520528065.3U CN204833596U (en) | 2015-07-21 | 2015-07-21 | Be close protection warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520528065.3U CN204833596U (en) | 2015-07-21 | 2015-07-21 | Be close protection warning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204833596U true CN204833596U (en) | 2015-12-02 |
Family
ID=54691169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520528065.3U Expired - Fee Related CN204833596U (en) | 2015-07-21 | 2015-07-21 | Be close protection warning circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204833596U (en) |
-
2015
- 2015-07-21 CN CN201520528065.3U patent/CN204833596U/en not_active Expired - Fee Related
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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: 20151202 Termination date: 20160721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |