CN2279660Y - Multi-user antitheft alarmer - Google Patents
Multi-user antitheft alarmer Download PDFInfo
- Publication number
- CN2279660Y CN2279660Y CN 96224244 CN96224244U CN2279660Y CN 2279660 Y CN2279660 Y CN 2279660Y CN 96224244 CN96224244 CN 96224244 CN 96224244 U CN96224244 U CN 96224244U CN 2279660 Y CN2279660 Y CN 2279660Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- alarm
- signal transmission
- infrared
- delay compensating
- 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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- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to a multi-user anti-theft alarm, comprising a power supply, a generating circuit for infrared signals, a time delay compensating circuit for signal transmission, an executive circuit and an alarm. The generating circuit for infrared signals outputs to the time delay compensating circuit for signal transmission; the time delay compensating circuit for signal transmission outputs to the executive circuit; the executive circuit outputs to the alarm. The utility model has the advantages that multiple alarm signals can be reflected and false alarms at the time that a power supply is just switched on can be prevented.
Description
The utility model belongs to the alarm technical field.
The infrared anti-theft alarm of prior art generally is the signal that an alarm receives a sensor, controlled by it, can only be as an independent sect or the warning of one window.And,, can produce unnecessary false alarm in short-term because the speed of infrared signal transmission is lower than electrical transmission speed in energized moment, cause the inconvenience in the work.
The purpose of this utility model be to provide a kind of can be by a plurality of alarm set point signal triggering, and when energized, can not produce the infra-red alarm of the multi-point sensing of false alarm.
The purpose of this utility model is achieved in that a kind of multi-user's burglar alarm, comprises power supply, infrared signal generation circuit, signal transmission delay compensating circuit, executive circuit, alarm.Power supply provides DC voltage for whole alarm.Infrared signal generation circuit comprises infrared light emitting diode and infrared receiver diode, reception diode can produce electric signal by infrared radiation or blocking the time, its output terminal is received the input end of signal transmission delay compensating circuit, the output terminal of a plurality of infrared signal generation circuit can and be connected in the input end of signal transmission delay compensating circuit, and signal transmission delay compensating circuit output terminal is connected with the input end of executive circuit.The output terminal of executive circuit is connected with the input end of alarm.
Infrared signal generation circuit comprises infrared light emitting diode, infrared receiver diode and transistor, is contained on door or the window.Under door and window is closed situation, the infrared ray that infrared receiver diode receiving infrared-ray emitting diode sends, resistance reduces, and its upper end output electronegative potential is handled through triode, infrared signal generation circuit output noble potential, input signal transmission delay circuit makes its output terminal output electronegative potential, the input executive circuit, executive circuit is not worked, and alarm is not reported to the police.
When the door of alarm set point or window when being opened, the infrared ray of infrared light emitting diode emission is interdicted by door and window, the resistance of infrared receiver diode raises, infrared signal generation circuit output electronegative potential, input signal transmission delay compensating circuit makes its output noble potential, the executive circuit repeat circuit is connected, connected alarm equipment alarm.
Signal transmission delay compensating circuit comprises triode and capacitor, and when rigidly connecting energize, because capacitor is still uncharged, voltage is low, and circuit output electronegative potential can not produce false alarm.After this, condenser voltage raises, and circuit such as is at pending status input signal.
Alarm can be the acoustic alarm device, also can be light, electric alarms based on pattern recognition.
The utility model has the advantages that: a plurality of alarm set points can be set, and an alarm can be reported the theft alarm at many places or many families; When rigidly connecting energize, false alarm be can not occur, family, enterprise, office and financial industry are applicable to.
Fig. 1 is a structural drawing of the present utility model, and Fig. 1 is described as follows: 1 is power supply, and 2 is infrared signal generation circuit, and 3 is signal transmission delay compensating circuit, and 4 is executive circuit, and 5 is alarm.
Fig. 2 is the basic circuit diagram of an embodiment of the present utility model.Be described as follows in conjunction with the embodiments: infrared signal generation circuit 2 comprises infrared light emitting diode D
1With infrared reception diode D
2It is in running order to connect burglar alarm at switch k, and the door or the window of alarm set point are all closed under the situation D
2Receive D
1The infrared ray that sends, its resistance reduces, D
2The A point output electronegative potential of upper end makes triode Q
1And Q
2Conducting, Q
3End, noble potential appears in the B point.The input end of this noble potential input signal transmission delay compensating circuit 3 makes Q wherein
4Conducting, electronegative potential appears in the G point.The input end of this electronegative potential input executive circuit 4 makes Q
7And Q
8End relay J
1Be failure to actuate, alarm is disconnected.
When alarm set point the door or window be opened, make D
1When the infrared ray of emission is interdicted, D
2Resistance raises, and noble potential appears in the A point, makes Q
1And Q
2End Q
2Conducting, electronegative potential appears in B.This electronegative potential input signal transmission delay compensating circuit 3 makes Q
4End, noble potential appears in the G point.This noble potential input executive circuit 4 makes Q
7And Q
8Conducting, relay J
1Connect, alarm work sends sound, visual alarm.Relay J
1After the connection, by its contact and R
12Self-locking.
The effect of signal transmission delay compensating circuit 3 is to occur false alarm when preventing to rigidly connect energize.When rigidly connecting energize, if triode Q
4Base stage be electronegative potential, then G point output noble potential makes the Q in the executive circuit 4
7And Q
8Conducting, relay J
1Connect and report to the police.Be provided with under signal transmission delay compensating circuit 3 conditions, then during energized, capacitor C wherein
2On voltage very low, the H point is an electronegative potential, Q
6End Q
5And Q
4Conducting, making the G point is electronegative potential, the Q in the executive circuit 4
7And Q
8End relay J
1Do not work, can false alarm.Work as C
2Be recharged and after voltage rose, the H point was a noble potential, makes Q
6Conducting, Q
5, Q
4All end, the state of pending input signal such as be in.
Power supply 1 is in parallel with accumulator by the AC rectification stabilized voltage supply, output 12-13 volt DC voltage.
Claims (1)
1, a kind of multi-user's burglar alarm comprises power supply (1), alarm (5), it is characterized in that also comprising infrared signal generation circuit (2), signal transmission delay compensating circuit (3) and executive circuit (4); Power supply (1) is supplied with DC voltage; Infrared signal generation circuit (2) comprises infrared light emitting diode and infrared receiver diode, its output terminal is received the input end of signal transmission delay compensating circuit (3), and the output terminal of signal transmission delay compensating circuit (3) is connected with the input end of executive circuit (4); The output terminal of executive circuit (4) is connected with the input end of alarm (5); The output terminal of a plurality of infrared signal generation circuit (2) can and be connected on the input end of signal transmission delay compensating circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224244 CN2279660Y (en) | 1996-12-19 | 1996-12-19 | Multi-user antitheft alarmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224244 CN2279660Y (en) | 1996-12-19 | 1996-12-19 | Multi-user antitheft alarmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279660Y true CN2279660Y (en) | 1998-04-22 |
Family
ID=33903278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96224244 Expired - Fee Related CN2279660Y (en) | 1996-12-19 | 1996-12-19 | Multi-user antitheft alarmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279660Y (en) |
-
1996
- 1996-12-19 CN CN 96224244 patent/CN2279660Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |