CN2160956Y - Line anti-theft alarm - Google Patents

Line anti-theft alarm Download PDF

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Publication number
CN2160956Y
CN2160956Y CN 93221012 CN93221012U CN2160956Y CN 2160956 Y CN2160956 Y CN 2160956Y CN 93221012 CN93221012 CN 93221012 CN 93221012 U CN93221012 U CN 93221012U CN 2160956 Y CN2160956 Y CN 2160956Y
Authority
CN
China
Prior art keywords
circuit
capacitor
resistance
chip
triode
Prior art date
Application number
CN 93221012
Other languages
Chinese (zh)
Inventor
韩明祥
Original Assignee
韩明祥
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 韩明祥 filed Critical 韩明祥
Priority to CN 93221012 priority Critical patent/CN2160956Y/en
Application granted granted Critical
Publication of CN2160956Y publication Critical patent/CN2160956Y/en

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Abstract

The utility model relates to a line anti-theft alarm. The utility model belongs to a high, low-voltage transmission line facility. Such as anti-theft alarms of electric wires and transformers. A shell body, an indicating lamp, a switch, a timer, an audible and visual alarm and an anti-theft alarm circuit are arranged in the utility model. The anti-theft alarm circuit is composed of a rectification circuit, a testing circuit, a controlling circuit, and an output circuit. The utility model can avoid false alarm because the electricity is stopped temporarily and because of the action of a protector and the electricity stopping. The utility model has the advantages of simple structure, and low cost.

Description

Line burglar alarm is can be to the device of unexpected line fault warning on a kind of 220V of access or the 38W alternating current circuit.
Present low-voltage circuit burglar alarm generally is made up of two relays and the control circuit of direct access phase line, and the alarm subject matter of this kind structure is that failure rate is higher, and the price height.
The purpose of this utility model is a kind of line burglar alarm that continues extremely low, that failure rate is low of working, consume energy under safe voltage of design, and to power transmission facility in the high and low pressure circuit and electric wire, transformer is stolen all can report to the police.
The utility model is made up of casing, pilot lamp, switch, timer, audible-visual annunciator and warning circuit, and warning circuit is made up of rectification circuit 1, testing circuit 2, control circuit 3 and output circuit 4.
The rectification circuit of line burglar alarm is by decompression capacitor C 1And resistance R 1Back in parallel is connected with bridge rectifier circuit, meets filter capacitor C behind the bridge rectifier circuit 1, light emitting diode LDE and current-limiting resistance R 5Form power light.The testing circuit of line burglar alarm is by relay J, charging resistor R 2, bleeder resistance R 3, battery and K switch 1, K 2, K 3, K forms the light emitting diode LDE in the relay J one termination rectification circuit, bridge rectifier circuit and R in another termination rectification circuit 2, resistance R 2, R 3Be connected in parallel on the anode and R 3The preceding K switch that inserts 2, K.The control circuit of line burglar alarm is by capacitor C 2, C 3, time-delay regulator potentiometer W and ic chip constitute, capacitor C 2Resistance R in the one termination testing circuit 3, the 6th pin of another termination ic chip, C 3One termination ic chip the 5th pin, the other end and time-delay regulator potentiometer W are connected and insert the negative pole of battery, another termination and the K of potentiometer W 3Connect the back and insert the 2nd pin of ic chip.The output circuit of line burglar alarm is by capacitor C 4, C 5, resistance R 4, triode BG 1, BG 2Constitute resistance R with loudspeaker 4Be connected back and and capacitor C with ic chip the 3rd pin in the control circuit 5An end connect the back and insert triode BG 2Emitter, resistance R 4The other end and triode BG 1Base stage and capacitor C 4An end connect capacitor C 5Other end connection control circuit in ic chip the 1st pin and triode BG 1Emitter and loudspeaker, capacitor C 4Another termination triode BG 2Collector and loudspeaker.The relay J of broken string burglar alarm is selected the JQX-4F type for use.
Advantage of the present utility model is to avoid in the circuit because of protector action or other instantaneous power-off false alarms, and failure rate is low, safe in utilization, low price.
Accompanying drawing 1 is the utility model stereographic map.
Accompanying drawing 2 is the utility model circuit diagram.
Embodiment: instructions the 5th part has been described in detail an embodiment of the present utility model, describes the utility model principle of work in detail below in conjunction with accompanying drawing 2: through capacitor C 1And resistance R 1Again through the whole capacitor C filtering of D bridge, output 12V direct current is for relay J work, R with the step-down of 220V alternating current 5Be current-limiting resistance, LDE is the power supply indication.
When energising, relay adhesive, K 1Closure, electric current is through R 2Choked flow charges the battery.Work as K 3When closed, make C 2Charging released R 3Be bleeder resistance, guaranteed the stable accuracy of delay time.
When the line that continues had a power failure, relay was released, K 2Closure, battery are given the power supply of 555 delay circuits, and electric current begins to timing capacitor C 2Charging, stable state begins C temporarily 2Both end voltage is along with the time increases, and the W both end voltage then reduces gradually, behind the elapsed time td, and C 2On voltage reach 2/3Vcc, during the last voltage of W<1/3Vcc, 555 equivalent triggers trigger, and are stable state by temporarily steady state turnover.
Be output as high level, to the audio frequency oscillator power supply, oscillator work, loudspeaker sounds the alarm.
K is an Alarming control switch, opens K during use earlier 1, can work and report to the police or close when not using as finishing.

Claims (5)

1, a kind of line burglar alarm has pilot lamp, switch, timer, audible-visual annunciator and housing and warning circuit, it is characterized in that: warning circuit is made up of rectification circuit, testing circuit, control circuit, output circuit.
2, line burglar alarm according to claim 1 is characterized in that: rectification circuit is by decompression capacitor C 1And resistance R 1Back in parallel is connected with bridge rectifier circuit, meets filter capacitor C behind the bridge rectifier circuit 1, light emitting diode LDE and current-limiting resistance R 5Form power light.
3, line burglar alarm according to claim 1 is characterized in that: testing circuit is by relay J, charging resistor R 2, bleeder resistance R 3, battery and K switch 1, K 2, K 3, K forms the light emitting diode LDE in the relay J one termination rectification circuit, bridge rectifier circuit and R in another termination rectification circuit 2, resistance R 2, R 3Be connected in parallel on the anode and R 3The preceding K switch that inserts 2, K.
4, line burglar alarm according to claim 1 is characterized in that control circuit is by capacitor C 2, C 3, time-delay regulator potentiometer W and ic chip constitute, capacitor C 2Resistance R in the one termination testing circuit 3, the 6th pin of another termination ic chip, C 3One termination ic chip the 5th pin, the other end and time-delay regulator potentiometer W are connected and insert the negative pole of battery, the other end of potentiometer W and K 3Connect the back and insert the 2nd pin of ic chip.
5, line burglar alarm according to claim 1, it is characterized in that: output circuit is by capacitor C 4, C 5, resistance R 4, triode BG 1, BG 2Constitute resistance R with loudspeaker 4Be connected back and and capacitor C with ic chip the 3rd pin in the control circuit 5An end connect the back and insert triode BG 2Emitter, resistance R 4The other end and triode BG 1Base stage and capacitor C 4An end connect capacitor C 5Other end connection control circuit in ic chip the 1st pin and triode BG 1Emitter and loudspeaker, capacitor C 4Another termination triode BG 2Collector and loudspeaker.
CN 93221012 1993-08-09 1993-08-09 Line anti-theft alarm CN2160956Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93221012 CN2160956Y (en) 1993-08-09 1993-08-09 Line anti-theft alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93221012 CN2160956Y (en) 1993-08-09 1993-08-09 Line anti-theft alarm

Publications (1)

Publication Number Publication Date
CN2160956Y true CN2160956Y (en) 1994-04-06

Family

ID=33799985

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 93221012 CN2160956Y (en) 1993-08-09 1993-08-09 Line anti-theft alarm

Country Status (1)

Country Link
CN (1) CN2160956Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102662103A (en) * 2012-05-11 2012-09-12 成都安可信电子股份有限公司 Method for preventing false alarms of alarm device
CN103325194A (en) * 2013-05-30 2013-09-25 成都荣耀科技有限公司 Simple anti-theft device of transformer
CN103593934A (en) * 2013-11-25 2014-02-19 国家电网公司 Anti-theft alarming device of transformer
CN103745544A (en) * 2014-01-21 2014-04-23 广西柳州特变科技有限责任公司 Amorphous alloy variable pressure anti-theft system
CN104616415A (en) * 2015-03-03 2015-05-13 童庆洪 Anti-theft audible and visual alarm device for electric power facility

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102662103A (en) * 2012-05-11 2012-09-12 成都安可信电子股份有限公司 Method for preventing false alarms of alarm device
CN103325194A (en) * 2013-05-30 2013-09-25 成都荣耀科技有限公司 Simple anti-theft device of transformer
CN103593934A (en) * 2013-11-25 2014-02-19 国家电网公司 Anti-theft alarming device of transformer
CN103745544A (en) * 2014-01-21 2014-04-23 广西柳州特变科技有限责任公司 Amorphous alloy variable pressure anti-theft system
CN104616415A (en) * 2015-03-03 2015-05-13 童庆洪 Anti-theft audible and visual alarm device for electric power facility

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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