CN204571550U - A kind of alarm for door lock - Google Patents
A kind of alarm for door lock Download PDFInfo
- Publication number
- CN204571550U CN204571550U CN201520219911.3U CN201520219911U CN204571550U CN 204571550 U CN204571550 U CN 204571550U CN 201520219911 U CN201520219911 U CN 201520219911U CN 204571550 U CN204571550 U CN 204571550U
- Authority
- CN
- China
- Prior art keywords
- infrared receiving
- triode
- alarm
- receiving circuit
- door lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The alarm for door lock that the application provides, comprises the infrared transmitting circuit and infrared receiving circuit that are arranged at keyhole both sides.Infrared transmitting circuit comprises infrared-emitting diode, for to infrared receiving circuit utilizing emitted light signal, infrared receiving circuit comprises infrared receiving diode, for receiving the optical signal that described infrared transmitting circuit is launched, when occur illegal sound out unblank time, key injects in keyhole, the signal making infrared receiving diode not receive infrared-emitting diode to send, infrared receiving circuit exports high level to single-chip microcomputer, carries out acousto-optic hint to illegal situation about souning out.When illegal exploration is unblanked, then infrared receiving circuit output low level is to single-chip microcomputer, does not make alert process.The utility model device has the features such as structure is simple, reliability is high, durable in use, changes little to lockset mechanical driving part, implements easily, to be adapted to batch production, and can to utilize power supply, the doorbell of existing security door, reduce further cost.
Description
Technical field
The application relates to a kind of alarm for door lock.
Background technology
At present, door lock may be mechanical, also may be electronic, generally have hotel lock, Lock for apartment house, intelligent door lock, fingerprint gate lock, glass door lock etc.But door lock on the market, when being carried out exploration and unblanking, all can not be reported to the police.Existing door lock lacks and carries out warning device to illegally unblanking, and causes the security performance of mechanical lock low.
Utility model content
The application provides a kind of alarm for door lock, can unblank to report to the police to illegal exploration, the security performance of elevating mechanism lock.
According to the first aspect of the application, the application provides a kind of alarm for door lock, comprising: the infrared transmitting circuit and the infrared receiving circuit that are arranged at keyhole both sides; Described infrared transmitting circuit comprises infrared-emitting diode, for described infrared receiving circuit utilizing emitted light signal; Described infrared receiving circuit comprises infrared receiving diode, and described infrared receiving diode positive pole connects power supply by resistance R2, minus earth, for receiving the optical signal that described infrared transmitting circuit is launched; Described infrared receiving circuit also comprises: PNP type triode Q1, the base stage of triode Q1 is connected with the positive pole of described infrared receiving diode by electric capacity C1, the emitter stage of triode Q1 connects power supply, colelctor electrode is connected with the base stage of NPN type triode Q2, the grounded emitter of triode Q2, colelctor electrode is connected with the base stage of PNP type triode Q3; The grounded collector of triode Q3, emitter stage is connected with the emitter stage of triode Q1 by resistance R3; Described infrared receiving circuit also comprises: one end is connected with described power supply, the resistance R4 that the other end is connected with the base stage of triode Q1, and, the colelctor electrode of resistance R5, resistance R5 mono-termination triode Q1, one end ground connection; Described infrared receiving circuit carries out load output by the emitter stage of triode Q3.
Optionally, described power supply is 3.3V.
Optionally, the positive pole of described infrared-emitting diode is connected with power supply by resistance R1, and negative pole is connected with single-chip microcomputer.
Optionally, described infrared receiving circuit is connected with the pin RX of single-chip microcomputer by the emitter stage of triode Q3, and outputs level signals is to single-chip microcomputer.
Optionally, described infrared receiving circuit exports high level signal to single-chip microcomputer by the emitter stage of triode Q3, starts acoustic-optic alarm and sends alarm signal.
Optionally, described infrared receiving circuit passes through the emitter stage output low level signal of triode Q3 to single-chip microcomputer, and acoustic-optic alarm does not start.
Optionally, also comprise: electric capacity C2; Electric capacity C2 one end ground connection, power supply described in another termination.
Optionally, the value R1 of resistance is 75 Ω; R2 is 22K Ω, R3 be 100K Ω, R4 be 4.7M Ω, R5 is 100K Ω.
The alarm for door lock that the application provides, comprises the infrared transmitting circuit and infrared receiving circuit that are arranged at keyhole both sides.Infrared transmitting circuit comprises infrared-emitting diode, for to infrared receiving circuit utilizing emitted light signal, infrared receiving circuit comprises infrared receiving diode, for receiving the optical signal that described infrared transmitting circuit is launched, when occur illegal sound out unblank time, key injects in keyhole, the signal making infrared receiving diode not receive infrared-emitting diode to send, infrared receiving circuit exports high level to single-chip microcomputer, carries out acousto-optic hint to illegal situation about souning out.When illegal exploration is unblanked, then infrared receiving circuit output low level is to single-chip microcomputer, does not make alert process.The utility model device has the features such as structure is simple, reliability is high, durable in use, changes little to lockset mechanical driving part, implements easily, to be adapted to batch production, and can to utilize power supply, the doorbell of existing security door, reduce further cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail below by detailed description of the invention.
In the embodiment of the present application, provide a kind of alarm for door lock, can unblank to report to the police to illegal exploration, the security performance of elevating mechanism lock.
Embodiment one:
Please refer to Fig. 1, Fig. 1 is the structural representation of the utility model embodiment one.As shown in Figure 1, a kind of alarm for door lock, can comprise:
Infrared transmitting circuit 10 and infrared receiving circuit 20.
Infrared transmitting circuit 10 comprises infrared-emitting diode U1, for infrared receiving circuit 20 utilizing emitted light signal.
Infrared receiving circuit 20 comprises infrared receiving diode U2, and infrared receiving diode U2 positive pole meets power supply VCC by resistance R2, minus earth, for receiving the optical signal that infrared transmitting circuit 10 is launched.
Infrared receiving circuit 20 also comprises: PNP type triode Q1, and the base stage of triode Q1 is connected with the positive pole of infrared receiving diode U2 by electric capacity C1.The emitter e 1 of triode Q1 meets power supply VCC, and colelctor electrode c1 is connected with the base stage b2 of NPN type triode Q2.Emitter e 2 ground connection of triode Q2, colelctor electrode c2 is connected with the base stage b3 of PNP type triode Q3, and the colelctor electrode c3 ground connection of triode Q3, emitter e 3 is connected with the emitter e 1 of triode Q1 by resistance R3.
Infrared receiving circuit 20 also comprises: one end is connected with power supply VCC, the resistance R4 that the other end is connected with the base stage b1 of triode Q1; And, the colelctor electrode of resistance R5, resistance R5 mono-termination triode Q1, one end ground connection.
Infrared receiving circuit 20 carries out load output by the emitter e 3 of triode Q3.
In an embodiment, infrared receiving circuit is connected with the pin RX of single-chip microcomputer by the emitter e 3 of triode Q3, and outputs level signals is to single-chip microcomputer.
In the present embodiment device, supply voltage VCC is preferably set to 3.3V, and infrared transmitting circuit 10 is connected with single-chip microcomputer, to be controlled the utility model device by single-chip microcomputer.Obviously, when the present embodiment device is in running order, single-chip microcomputer is in the state of a control to infrared transmitting circuit 10 all the time.Infrared transmitting circuit 10 comprise infrared-emitting diode, when the present embodiment device works, outside utilizing emitted light signal.
As shown in Figure 1, the emitter e 3 of triode Q3 connects single-chip microcomputer by pin RX, and the output signal of the present embodiment device is transferred in single-chip microcomputer and processes.Single-chip microcomputer is judged by the change of the level of the emitter e 3 to Q3.
Infrared receiving circuit 20 comprises infrared receiving diode U2, when illegal exploration is unblanked, do not have between infrared-emitting diode U1 and infrared receiving diode U2 mechanical key or other illegally sound out blocking of (such as iron wire, card etc.), then infrared receiving diode U2 receives the optical signal sent from infrared-emitting diode U1, resistance R4 is pull-up resistor, and the current potential of Q1 base stage is fixed as low level.Now, the base stage b1 of triode Q1 is in low level state, triode Q1 conducting, resistance R5 provides high level, triode Q2 conducting, triode Q3 conducting for the base stage b2 of triode Q2, then the colelctor electrode c3 link RX of triode Q3 exports as low level, and single-chip microcomputer does not start acoustic-optic alarm.
When having mechanical key between infrared-emitting diode U1 and infrared receiving diode U2, infrared receiving diode U2 does not receive the signal that infrared-emitting diode U1 sends, the current potential of Q1 base stage is fixed on high level by R4, like this, triode Q1 in circuit ends, triode Q2 ends, and triode Q3 ends, and RX exports as high level.Single-chip microcomputer can detect high level, starts acoustic-optic alarm and sends alarm signal.Prompting has mechanical key to sound out, and achieves the function soundd out mechanical key and report to the police.
In an embodiment, also comprise: electric capacity C2, electric capacity C2 one end ground connection, another termination power VCC.
Electric capacity C2's can noise signal in filtering circuit, and supply voltage is stablized.
In a preferred embodiment, by debugging, in the alarm for door lock of the embodiment of the present application, the value of each resistance is respectively: R1 is 75 Ω, R2 be 22K Ω, R3 be 100K Ω, R4 be 4.7M Ω, R5 is 100K Ω.
The alarm for door lock that the application provides, comprises the infrared transmitting circuit and infrared receiving circuit that are arranged at keyhole both sides.Infrared transmitting circuit comprises infrared-emitting diode, for to infrared receiving circuit utilizing emitted light signal, infrared receiving circuit comprises infrared receiving diode, for receiving the optical signal that described infrared transmitting circuit is launched, when occur illegal sound out unblank time, key injects in keyhole, the signal making infrared receiving diode not receive infrared-emitting diode to send, infrared receiving circuit exports high level to single-chip microcomputer, carries out acousto-optic hint to illegal situation about souning out.When illegal exploration is unblanked, then infrared receiving circuit output low level is to single-chip microcomputer, does not make alert process.The utility model device has the features such as structure is simple, reliability is high, durable in use, changes little to lockset mechanical driving part, implements easily, to be adapted to batch production, and can to utilize power supply, the doorbell of existing security door, reduce further cost.
Above content is in conjunction with concrete embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made.
Claims (10)
1. an alarm for door lock, is characterized in that, comprising: the infrared transmitting circuit and the infrared receiving circuit that are arranged at keyhole both sides;
Described infrared transmitting circuit comprises infrared-emitting diode, for described infrared receiving circuit utilizing emitted light signal;
Described infrared receiving circuit comprises infrared receiving diode, and described infrared receiving diode positive pole connects power supply by resistance R2, minus earth, for receiving the optical signal that described infrared transmitting circuit is launched;
Described infrared receiving circuit also comprises: PNP type triode Q1, the base stage of triode Q1 is connected with the positive pole of described infrared receiving diode by electric capacity C1, the emitter stage of triode Q1 connects power supply, colelctor electrode is connected with the base stage of NPN type triode Q2, the grounded emitter of triode Q2, colelctor electrode is connected with the base stage of PNP type triode Q3; The grounded collector of triode Q3, emitter stage is connected with the emitter stage of triode Q1 by resistance R3; Described infrared receiving circuit carries out load output by the emitter stage of triode Q3.
2. alarm for door lock as claimed in claim 1, it is characterized in that, described infrared receiving circuit also comprises: one end is connected with described power supply, the resistance R4 that the other end is connected with the base stage of triode Q1.
3. alarm for door lock as claimed in claim 1, it is characterized in that, described infrared receiving circuit also comprises: resistance R5, the colelctor electrode of resistance R5 mono-termination triode Q1, one end ground connection.
4. alarm for door lock as claimed in claim 1, it is characterized in that, described power supply is 3.3V.
5. alarm for door lock as claimed in claim 1, is characterized in that, the positive pole of described infrared-emitting diode is connected with power supply by resistance R1, and negative pole is connected with single-chip microcomputer.
6. as the alarm for door lock in claim 1-3 as described in any one, it is characterized in that, described infrared receiving circuit is connected with the pin RX of single-chip microcomputer by the emitter stage of triode Q3, and outputs level signals is to single-chip microcomputer.
7. alarm for door lock as claimed in claim 6, is characterized in that, described infrared receiving circuit exports high level signal to single-chip microcomputer by the emitter stage of triode Q3, starts acoustic-optic alarm and sends alarm signal.
8. alarm for door lock as claimed in claim 6, is characterized in that, described infrared receiving circuit passes through the emitter stage output low level signal of triode Q3 to single-chip microcomputer, and acoustic-optic alarm does not start.
9. as the alarm for door lock in claim 1-3 as described in any one, it is characterized in that, also comprise: electric capacity C2;
Electric capacity C2 one end ground connection, power supply described in another termination.
10. alarm for door lock as claimed in claim 9, is characterized in that, the value R1 of resistance is 75 Ω, R2 be 22K Ω, R3 be 100K Ω, R4 be 4.7M Ω, R5 is 100K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219911.3U CN204571550U (en) | 2015-04-13 | 2015-04-13 | A kind of alarm for door lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219911.3U CN204571550U (en) | 2015-04-13 | 2015-04-13 | A kind of alarm for door lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204571550U true CN204571550U (en) | 2015-08-19 |
Family
ID=53864205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520219911.3U Expired - Fee Related CN204571550U (en) | 2015-04-13 | 2015-04-13 | A kind of alarm for door lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204571550U (en) |
-
2015
- 2015-04-13 CN CN201520219911.3U patent/CN204571550U/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: 20150819 Termination date: 20210413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |