CN206773854U - A kind of live electric cable burglar alarm - Google Patents
A kind of live electric cable burglar alarm Download PDFInfo
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- CN206773854U CN206773854U CN201720523653.7U CN201720523653U CN206773854U CN 206773854 U CN206773854 U CN 206773854U CN 201720523653 U CN201720523653 U CN 201720523653U CN 206773854 U CN206773854 U CN 206773854U
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Abstract
A kind of live electric cable burglar alarm of the present utility model, including power on signal detection modulate circuit, level shifting circuit, triggers circuit, warning circuit, the voltage signal conditioning circuit connects level shifting circuit, level shifting circuit connects triggers circuit, triggers circuit connects warning circuit, effectively solves the problems, such as that existing cable anti-theft device cost is high, potential safety hazard be present.The utility model is simple in construction, stable performance, use contactless voltage transformer or current transformer by the voltage of live electric cable or curent change for accessible small signal or electric current, when cable is intact, when powered, small signal or electric current are sent into the trigger pulse that level shifting circuit is converted to determination, the alarm of triggers circuit work voice after amplifier buffering isolation, power amplification rear speaker sends alarm, until pushing button K1, cut off the electricity supply, alarm stops.
Description
Technical field
Electric and electronic technical field is the utility model is related to, particularly a kind of live electric cable burglar alarm.
Background technology
Cable conductor material is mainly aluminium, copper, most of trunk power circuit in heavy construction be by the use of copper conductor as
Material, because the unit take-back cost of copper is higher, there are great economic interests, criminal often takes a risk to steal cable, and existing
Cable anti-theft device, cost is high, needs to contact with live wire, potential safety hazard be present.
Therefore the utility model provides a kind of new scheme to solve this problem.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the utility model is just to provide a kind of powered electricity
Cable burglar alarm, effectively solve the problems, such as that existing cable anti-theft device cost is high, potential safety hazard be present.
Its technical scheme solved is, including power on signal detection modulate circuit, level shifting circuit, triggers circuit, report
Alert circuit, it is characterised in that the voltage signal conditioning circuit connects level shifting circuit, level shifting circuit connection triggering electricity
Road, triggers circuit connection warning circuit；The level shifting circuit includes resistance R2, resistance R2 other end connection diode D2
Positive pole, diode D2 negative pole connects resistance R3 one end, resistance R4 one end, triode Q1 base stage, resistance R3 respectively
The other end connection power supply+5V, resistance R4 other end connection ground, triode Q1 emitter stage by resistance R5 connections power supply+
5V, triode Q1 colelctor electrode connect grounding resistance R6 one end, IGCT TV1 control pole respectively；The triggers circuit bag
IGCT TV1 is included, IGCT TV1 anode connects power supply+5V with button K1 one end, and button K1 other end connection ground is brilliant
Brake tube TV1 negative electrode connects ground connection electrochemical capacitor C2 one end, chip U2 TG ends, chip U2 vdd terminal respectively, chip U2's
OSC ends connect resistance R7 one end, electric capacity C3 one end respectively, and resistance R7 other end connection power supply+5V, electric capacity C3's is another
End connection ground, chip U2 VSS ends connection ground.Power on signal detection modulate circuit be voltage signal detect modulate circuit or
Person's current signal detects modulate circuit.
The warning circuit includes triode Q2, triode Q2 base stage connection chip U2 OUT terminal, triode Q2 hair
Emitter-base bandgap grading passes through resistance R8 connections ground, triode Q2 colelctor electrode connection loudspeaker LS1 negative pole, loudspeaker LS1 positive pole connection
Power supply+5V.
The voltage signal conditioning circuit includes voltage transformer H1, and voltage transformer H1 pin 1 connects resistance respectively
R1 one end, electric capacity C1 one end, operational amplifier U1 pin 3, voltage transformer H1 pin 2, the resistance R1 other end,
The electric capacity C1 other end is all connected with ground, and operational amplifier U1 pin 4 connects power supply -5V, and operational amplifier U1 pin 7 connects
Power supply+5V, operational amplifier U1 pin 1 connects variable resistor RW1 one end, and operational amplifier U1 pin 8 connects variable
The resistance RW1 other end, operational amplifier U1 pin 2 distinguish concatenation operation amplifier U1 pin 6, resistance R2 one end.
The current signal detection modulate circuit includes current transformer H2, and current transformer H2 pin 1 connects respectively
Resistance R9 one end, diode D3 negative pole, diode D4 positive pole, operational amplifier U3 pin 1, current transformer H2's
Pin 2, diode D3 positive pole, diode D4 negative pole, operational amplifier U3 pin 2, operational amplifier U3 pin 4 are equal
Connection ground, operational amplifier U3 pin 7 connect power supply+5V, and the resistance R9 other end connects electric capacity C4 one end, electric capacity C4's
Other end difference concatenation operation amplifier U3 pin 3, ground capacity C5 one end, resistance R2 one end.
The voltage transformer H1 or current transformer H2 are contactless, no-load voltage ratio 100V, 2mA.
The utility model is simple in construction, stable performance, using contactless voltage transformer or current transformer by band
The voltage or curent change of electrical cables are accessible small signal or electric current, when cable is intact, when powered, and small signal
Or electric current is sent into the trigger pulse that level shifting circuit is converted to determination, triggers circuit work voice report after amplifier buffering isolation
Alert, power amplification rear speaker sends alarm, until pushing button K1, cut off the electricity supply, and alarm stops.
Brief description of the drawings
Fig. 1 is a kind of circuit link block figure of live electric cable burglar alarm of the utility model.
Fig. 2 is a kind of circuit catenation principle figure of live electric cable burglar alarm of the utility model.
Embodiment
About of the present utility model foregoing and other technology contents, feature and effect, in following cooperation with reference to figures 1 through figure
In the detailed description of 2 pairs of embodiments, can clearly it present.The structure content being previously mentioned in following examples, it is with explanation
Book accompanying drawing is reference.
Each exemplary embodiment of the present utility model is described below with reference to accompanying drawings.
Embodiment one, a kind of live electric cable burglar alarm, the electricity of power on signal detection modulate circuit collection energization cable
Level shifting circuit is sent into after pressure or the buffering isolation of current signal amplifier, low and high level pulse is converted to, controls triggers circuit
Conducting and cut-off, drive warning circuit sounding；The level shifting circuit is used for the letter that modulate circuit is detected according to power on signal
Number high and low level triggers pulse is converted to, when energization cable is intact, electrical signal detection modulate circuit has voltage or current signal
Diode D2, diode D2 conductings are connected after resistance R2, there is provided the base stage of path to triode Q1, this signal and resistance R3,
Triode Q1 base stage is added to after the coupling of resistance R4 base bias circuits, triode Q1 emitter stage passes through resistance R5 connection power supplys
+ 5V, now triode Q1 cut-offs, triode Q1 colelctor electrode do not output signals to IGCT TV1 control pole, conversely, working as
When energization cable is stolen, electrical signal detection modulate circuit does not have voltage or a current signal, and diode D2 is now electric equivalent to disconnection
Resistance R3, resistance R4 base bias circuits are added to triode Q1 base stage, triode Q1 emitter stage by resistance R5 connections power supply+
5V, now triode Q1 conductings, triode Q1 colelctor electrode output signals to IGCT TV1 control pole；The triggers circuit
Triode Q1 colelctor electrode output signal control in by level shifting circuit, when there is output signal, IGCT TV1 triggerings are led
It is logical, IGCT TV1 anode connection power supply+5V, so as to which+5V is added to IGCT TV1 negative electrode, grounded electrochemical capacitor C2 filtering
Chip U2 TG ends, chip U2 vdd terminal is connected afterwards, provides operating voltage for chip U2, chip U2 memory storages " catch a thief, grabbed
Thief！" voice sound, chip U2 OSC ends are that self-oscillation end is provided by resistance R7, electric capacity C3, often export a high level, chip
Inside is started working, and chip U2 VSS ends connection ground, button K1 is closed button, after pressing, deenergization.
Embodiment two, on the basis of embodiment one, the warning circuit is used for when detecting that cable is stolen, chip
U2 OUT terminal output audio alert signal, it is added to NPN type driving triode Q2 base stage, NPN type driving triode Q2 hair
Emitter-base bandgap grading by resistance R8 connections, is connected loudspeaker LS1 negative pole by colelctor electrode after NPN type driving triode Q2 power amplifications,
Loudspeaker LS1 positive pole connection power supply+5V, so as to which loudspeaker LS1 sends loud " catching a thief, catch a thief " sound automatically.
Embodiment three, on the basis of embodiment one, the voltage signal conditioning circuit is used for the electricity for gathering energization cable
Signal is pressed, and is nursed one's health, including voltage transformer H1, voltage transformer H1 are contactless, no-load voltage ratio 100V, 2mA, mutual induction of voltage
Device H1 pin 1 is that output end is converted into proportional voltage through resistance R1, be sent into after electric capacity C1 filtering by operational amplifier U1,
The follower of variable resistor RW1 compositions, play signal isolation buffering.
Embodiment five, on the basis of embodiment one, the current signal detection modulate circuit is used to gather energization cable
Current signal, and nurse one's health, including current transformer H2, current transformer H2 are contactless, no-load voltage ratio 100V, 2mA, electric current
The transformer H2 diode of pin 1, pin 2 through two diode D3, diode D4 reversal connections is connected to operational amplifier U3's
Pin 1, pin 2, play a part of to protect operational amplifier U3, it is anti-that current transformer H2 pin 1 is also connected with resistance R9, electric capacity C4
Current feed circuit, adjustment resistance R9 value, can adjust operational amplifier U3 output voltage.
The utility model when in use, after power on circuitry, when the intact energization of energization cable, electrical signal detection modulate circuit
Middle voltage or current transformer have voltage or current signal and conditioned（Isolation buffer is scaling）Afterwards, it is sent into level conversion
Circuit, triode Q1 base stage is added to after being coupled with resistance R3, resistance R4 base bias circuits, now triode Q1 ends, and does not have
There is the control pole level for outputting signals to IGCT TV1, IGCT TV1 without trigger pulse because being off state, warning circuit
Do not work, circuit is in holding state；When energization cable is cut, voltage or Current Mutual Inductance in electrical signal detection modulate circuit
Device does not have voltage or current signal, and now only resistance R3, resistance R4 base bias circuit signals are added to triode Q1 base stage,
Now triode Q1 is turned on, and triode Q1 colelctor electrode outputs signals to IGCT TV1 control pole, and IGCT TV1 triggerings are led
Logical, chip U2 obtains electric work, is sent after warning circuit power amplification and loud " catch a thief, catch a thief！" alarm, until press by
Key K1, cuts off the electricity supply, and alarm stops.
Claims (6)
1. a kind of live electric cable burglar alarm, including power on signal detection modulate circuit, level shifting circuit, triggers circuit,
Warning circuit, it is characterised in that the power on signal detection modulate circuit connection level shifting circuit, level shifting circuit connection
Triggers circuit, triggers circuit connection warning circuit；
The level shifting circuit includes resistance R2, and resistance R2 other end connection diode D2 positive pole, diode D2's is negative
Pole connects resistance R3 one end, resistance R4 one end, triode Q1 base stage respectively, and the resistance R3 other end connects power supply+5V,
Resistance R4 other end connection, triode Q1 emitter stage passes through resistance R5 connections power supply+5V, triode Q1 colelctor electrode point
Lian Jie not grounding resistance R6 one end, IGCT TV1 control pole；
The triggers circuit includes IGCT TV1, and IGCT TV1 anode connects power supply+5V, button K1 with button K1 one end
Other end connection ground, IGCT TV1 negative electrode connects ground connection electrochemical capacitor C2 one end, chip U2 TG ends, chip respectively
U2 vdd terminal, chip U2 OSC ends connect resistance R7 one end, electric capacity C3 one end, resistance R7 other end connection electricity respectively
Source+5V, electric capacity C3 other end connection ground, chip U2 VSS ends connection ground.
2. a kind of live electric cable burglar alarm according to claim 1, it is characterised in that the power on signal detection is adjusted
It is that voltage signal detects modulate circuit or current signal detects modulate circuit to manage circuit.
3. a kind of live electric cable burglar alarm according to claim 1, it is characterised in that the warning circuit includes three
Pole pipe Q2, triode Q2 base stage connection chip U2 OUT terminal, triode Q2 emitter stage pass through resistance R8 connections ground, three poles
Pipe Q2 colelctor electrode connection loudspeaker LS1 negative pole, loudspeaker LS1 positive pole connection power supply+5V.
A kind of 4. live electric cable burglar alarm according to claim 2, it is characterised in that the voltage signal conditioning electricity
Road includes voltage transformer H1, and voltage transformer H1 pin 1 connects resistance R1 one end, electric capacity C1 one end, computing respectively
Amplifier U1 pin 3, voltage transformer H1 pin 2, the resistance R1 other end, the electric capacity C1 other end are all connected with ground, fortune
The pin 4 for calculating amplifier U1 connects power supply -5V, and operational amplifier U1 pin 7 connects power supply+5V, and operational amplifier U1's draws
Pin 1 connects variable resistor RW1 one end, and operational amplifier U1 pin 8 connects the variable resistor RW1 other end, operation amplifier
Device U1 pin 2 distinguishes concatenation operation amplifier U1 pin 6, resistance R2 one end.
5. a kind of live electric cable burglar alarm according to claim 2, it is characterised in that the current signal detection is adjusted
Reason circuit includes current transformer H2, and current transformer H2 pin 1 connects resistance R9 one end respectively, diode D3 is born
Pole, diode D4 positive pole, operational amplifier U3 pin 1, current transformer H2 pin 2, diode D3 positive pole, two poles
Pipe D4 negative pole, operational amplifier U3 pin 2, operational amplifier U3 pin 4 are all connected with ground, operational amplifier U3 pin
7 connection power supply+5V, resistance R9 other end connection electric capacity C4 one end, electric capacity C4 other end difference concatenation operation amplifier
U3 pin 3, ground capacity C5 one end, resistance R2 one end.
A kind of 6. live electric cable burglar alarm according to claim 4, it is characterised in that the voltage transformer H1 or
Person's current transformer H2 is contactless, no-load voltage ratio 100V, 2mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523653.7U CN206773854U (en) | 2017-05-12 | 2017-05-12 | A kind of live electric cable burglar alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523653.7U CN206773854U (en) | 2017-05-12 | 2017-05-12 | A kind of live electric cable burglar alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206773854U true CN206773854U (en) | 2017-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720523653.7U Expired - Fee Related CN206773854U (en) | 2017-05-12 | 2017-05-12 | A kind of live electric cable burglar alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206773854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988820A (en) * | 2018-09-30 | 2018-12-11 | 郑州航空工业管理学院 | A kind of Analysis of Network Information system |
| CN109917180A (en) * | 2019-04-03 | 2019-06-21 | 杭州安脉盛智能技术有限公司 | Direct current signal non-contact detecting sensor based on current transformer |
-
2017
- 2017-05-12 CN CN201720523653.7U patent/CN206773854U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988820A (en) * | 2018-09-30 | 2018-12-11 | 郑州航空工业管理学院 | A kind of Analysis of Network Information system |
| CN108988820B (en) * | 2018-09-30 | 2023-09-01 | 北京易用时代科技有限公司 | Network information analysis system |
| CN109917180A (en) * | 2019-04-03 | 2019-06-21 | 杭州安脉盛智能技术有限公司 | Direct current signal non-contact detecting sensor based on current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190801 Address after: 476400 Lubei, West Section of Xingxing Avenue, Xiayi County, Shangqiu City, Henan Province Patentee after: Xiayi Jintai Technology Development Co., Ltd. Address before: 476400 Industrial Park, Xiayi County, Shangqiu City, Henan Province (Industrial Agglomeration Area) Patentee before: Henan Yida Cable Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20210512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |