CN2062083U - Theft-proof electronic alarm by human body induction - Google Patents
Theft-proof electronic alarm by human body induction Download PDFInfo
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- CN2062083U CN2062083U CN 89219077 CN89219077U CN2062083U CN 2062083 U CN2062083 U CN 2062083U CN 89219077 CN89219077 CN 89219077 CN 89219077 U CN89219077 U CN 89219077U CN 2062083 U CN2062083 U CN 2062083U
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- amplifier
- sensing device
- triode
- human body
- voltage
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- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a theft-proof electronic alarm by human body induction, comprising a sensing device, an alarm device and a power supply device, and the input terminal of the sensing device is connected with an induction body. When the human body approaches the induction body, the sensing device the alarm device send out an alarm signal The power supply device supplies power for the sensing device and the alarm device. Both the power supply and the power supply transmission line of the power supply of the utility model adopt dual fail-safe measures, and the utility model has false alarm proof, strong capability of alarm clearing and low cost.
Description
The utility model relates to a kind of human body induction type burglar alarm.
At present, known burglar alarm kind is more, but weak point is in various degree arranged mostly.For example, the contact warning device is on door, window etc. dry-reed relay to be installed, and utilizes on-off principle transmission alerting signal, and its structure is simpler, but reasons such as Chang Yin is blown, door and window vibration report by mistake, and is easily separated newspaper.Each tool advantages of warning device such as emerging in recent years radar, ultrasound wave, microwave, but the sparking of sending because of automobile, motorcycle, aircraft etc. sometimes disturbs, even the swing of curtain and reporting by mistake, and Installation and Debugging inconvenience, cost is higher, is difficult for popularizing.
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, and provide a kind of anti-wrong report strong, can't separate newspaper, human body induction type burglar alarm easy to use.
Design proposal of the present utility model is as follows:
A kind of human body induction type electronic anti-theft alarm comprises sensing device, warning device and supply unit, and its special character is:
1) described sensing device comprises oscillator, and it is exported through monofier, voltage multiplier and direct current amplifier input driving device, and oscillator input end and inductor in the described sensing device join, and described inductor is the non-metallic body of metallic object or band wire netting.
2) described warning device comprises switching amplifier, drive unit in the described sensing device of its input termination, its output is joined with switching amplifier and output amplifier respectively through output amplifier, trigger and warning signal monofier input acoustical generator, interlocking amplifier.
3) described supply unit comprises fairing, and its output is joined with voltage stabilizer and under-voltage indicator respectively through converter, and described voltage stabilizer output is joined with described sensor device and warning device respectively.
In the sensing device of the present utility model, described oscillator comprises inductance, electric capacity and triode; The amplifier that described monofier is made up of field effect transistor; Described voltage multiplier comprises rectifier doubler of being made up of diode, electric capacity and the wave filter of being made up of electric capacity, resistance; Described direct current amplifier is made up of the direct current integrated amplifier; Described drive unit is by driving triode and being made up of electronic switch and relay that triode is formed.
In the warning device of the present utility model, the amplifier that described switching amplifier, interlocking amplifier and output amplifier all are made up of triode; Described trigger adopts silicon controlled toggle; Described warning signal amplifier is made up of triode and integrated amplifier.
In the supply unit of the present utility model, described converter is made up of diode and switch; Described voltage stabilizer is made up of the direct current integrated stable voltage circuit; Described under-voltage indicator is made up of integrated amplifier and light emitting diode.
The accompanying drawing drawing is described as follows:
Fig. 1 is the utility model theory diagram.
Fig. 2 is the schematic circuit of the sensing device of the utility model most preferred embodiment.
Fig. 3 is the schematic circuit of the warning device of the utility model most preferred embodiment.
Fig. 4 is the schematic circuit of the supply unit of the utility model most preferred embodiment.
Specifically describe the utility model and most preferred embodiment thereof below in conjunction with accompanying drawing.
Fig. 1 is the utility model theory diagram.When human body when being inductor 1, forms a distributed capacitance near antitheft target between human body and the inductor 1, the induced signal that this electric capacity produces passes through sensing device 2, makes warning device 3 be in alarm condition and sends chimes of doom.Described inductor 1 is meant metallic object or with the non-metallic body of wire netting, as: metal safety cabinet, file cabinet, door, window, nonmetal cabinet or the like with wire netting.Even human body is with insulant sealing arms, and stand in wooden or other insulant gets near inductor 1, alarm also can be reported to the police.Sensing device 2 and warning device 3 are by supply unit 4 power supplies.
Fig. 2 is the schematic circuit of the sensing device of the utility model most preferred embodiment.Sensing device 2 is made up of oscillator 5, monofier 6, voltage multiplier 7, direct current amplifier 8 and drive unit 9.Inductance L 1～L3, capacitor C 1～C4 and triode T1 form oscillator 5, regulate the adjustable element parameter, make it be in balance starting of oscillation state.Inductance L 1～L3 is wound on the high frequency magnetic core of a closure, and oscillating current is given the monofier of being made up of field effect transistor T2 6 through inductance L 3 couplings.Interchange oscillator signal after the amplification is given voltage multiplier 7 through capacitor C 5 couplings, diode D1, D2 rectification and voltage multiplier in voltage multiplier 7, after capacitor C 6, C7, resistance R 1 filtering, send into the direct current amplifier of forming by benchmark amplifier IC1 8 by a higher d. c. voltage signal and compare and enlarge again.Because sending into amplifier IC1 angle voltage 2. is higher than angle reference voltage 3., the output of amplifier IC1 no signal, the then not conducting of triode T3 in the drive unit 9, relay J is not worked, its contact J1 is in normally off, electronic switch T4 also is in the saturation conduction closure state, and whole warning device 3 is in normal operating conditions.
As the people when the inductor 1, form a distributed capacitance between human body and the inductor 1, this electric capacity has destroyed the original balance starting condition for oscillation of oscillator 5, oscillator 5 failure of oscillations, the output of dead-beat signal, then also no signal output of monofier 6 and voltage multiplier 7,2. the angle of amplifier IC1 is zero potential in the direct current amplifier 8, and angle reference voltage parameter constant 3., the amplifier IC1 conducting of reversing, export a high voltage signal, drive triode T3 saturation conduction, relay J gets electric adhesive, former normally closed contact J1 disconnects, Chuan Lian electronic switch T4 dead electricity is reversed the switch multiplying arrangement in the warning device 3 that is attached thereto with it, and warning device 3 is in alarm condition.
Fig. 3 is the warning device schematic circuit of the utility model most preferred embodiment.Warning device 3 is made up of switching amplifier 10, interlocking amplifier 11, output amplifier 12, trigger 13 and warning signal monofier 14 and acoustical generator F.
When unmanned during near inductor 1, the contact J1 of sensing device 2 repeat circuits is normally closed, electronic switch T4 conducting, resistance R 2 is in parallel with the biasing resistor R3 of switching amplifier 10 in the warning device 3 by electronic switch T4, then the base stage of triode T5 is an electronegative potential, not conducting, its collector has higher DC potential.Triode T6 is provided with fixing biasing, is in normal operating conditions, saturation conduction.Triode T7 is in degree of depth conducting state, and its collector approaches zero potential, and diode D4 input end current potential is very low, and controllable silicon D5 is because of the not conducting of triggerless voltage, so integrated oscillator circuit IC2 and the power supply of triode T8 non-transformer, acoustical generator F is sounding not.
As the people when the inductor 1, sensing device 2 repeat circuit J get electric adhesive, its contact J1 disconnects, electronic switch T4 dead electricity, resistance R 2 loses relation in parallel with biasing resistor R3 in the switching amplifier 10, and b point current potential raises, diode D3 conducting, triode T5 conducting, the collector potential of triode T5 descends, and triode T7 base potential is also descended, and triode T7 is in cut-off state, its collector potential rises, then diode D4 conducting, the controllable silicon D5 conducting that is triggered, controllable silicon D5 anode clamper ground connection, by integrated oscillator circuit IC2, warning signal monofier 14 and acoustical generator F that triode T8 forms have had condition of power supply, sounding alarm.
Alarm is whenever finished once and is reported to the police, and the reset switch K1 in the warning device 3 must be resetted once, promptly disconnects K1 earlier, and then connects it.
Fig. 4 is the supply unit schematic circuit of the utility model most preferred embodiment.
The 220V civil power changes 12V voltage into through transformer B, insert converter 15 through bridge rectifier D again, converter 15 is made up of charge member and the electronic commutator K2 that resistance R 4, diode D6 form, when having a power failure or invador during with the 220V Ac Dump, this alarm can change direct current automatically over to by converter 15 and work on.When alternating current is worked, rectification and direct current through R4, can the accumulator E of direct supply in the machine be charged.In the under-voltage indicator 16, under-voltage amplifying circuit adopts the IC5 integrated amplifier, and stabilivolt D8 and resistance R 7 are formed the reference point, and resistance R 5, R6 form sample circuit, and stabilivolt D9, light emitting diode D10 are used for under-voltage signal indication.Light emitting diode D7 is used for alarm and normally indicates.Voltage stabilizer 17 is made up of integrated stable voltage circuit IC3, IC4, and it joins with sensing device 2 and warning device 3 respectively.
No matter any short circuit takes place, opens circuit in a, the b that the utility model sensing device 2 and warning device are 3, c three transmission lines, and warning device 3 all can send warning.A in the sensing device 2, b, three lines of c, respectively with warning device 3 in three lines of a, b, c join.During normal condition, the contact J1 of relay J is normally closed, electronic switch T4 conducting, and resistance R 2 is in parallel with R3, the b point is in electronegative potential, not conducting of triode T5, triode T6 saturation conduction, triode T7 is in dark conducting state, its collector approaches zero potential, controllable silicon D5 is because of the not conducting of triggerless voltage, and warning signal monofier 14 is not worked, and acoustical generator F does not report to the police.
Several situations that description is short-circuited, opens circuit below:
1) as a, b, when c three transmission lines are cut off at the same time or separately, the capital makes not conducting of electronic switch T4, can cause the resistance R 2 in the warning circuit to be disconnected by electronic switch, b point current potential raises, diode D3 conducting, triode T5 conducting, its collector potential descends, and triode T7 base potential descends, and is in cut-off state, its collector potential rises, diode D4 conducting, the controllable silicon D5 conducting that is triggered, its anode clamper ground connection, warning signal monofier 14 gets electric work, and acoustical generator F sends alerting signal.
2) when a, b two transmission lines during by short circuit, the voltage U 1 of supply unit 4 outputs directly is added on the b point of warning device 3, makes the rising of b point current potential, and its alarm principle is the same.
3) when a, c two transmission lines during by short circuit, the voltage U 1 of supply unit 4 outputs is by short circuit, direct ground connection, and electronic switch T4 does not have biasing, not conducting, resistance R 2 is still disconnected by electronic switch, then b point current potential rising, alarm principle is the same.
4) when b, c two transmission lines short circuits, the direct ground connection of the emitter of triode T6 in the warning device 3, saturation conduction, its collector potential descends, triode T7 base potential is descended, and its collector potential rises, the controllable silicon D5 conducting that is triggered, alerting signal is sent in warning signal monofier 14 and acoustical generator F work.
5) when a, b, c three transmission lines during simultaneously by short circuit, the direct ground connection of the emitter of triode T6 in the warning device 3, its alarm principle is the same.
In the utility model most preferred embodiment, the triode T1 in the sensing device 2 can adopt low power tubes such as 3DG6,3DG8,3DG202; Triode T3 can adopt power tube among 3DG12,3DG120, the 2SC1008 etc.; Electronic switch T4 can adopt middle low power pipes such as 3DG6,3DG8,3DG12,3DG202, and field effect transistor T2 can adopt low power tubes such as 3DJ6,3DJ7; Diode D1 and D2 can adopt the diode of series such as 2CK, 2AK, 2CP, 2AP; Integrated amplifier IC1 can adopt 741 integrated packages or the μ P555 integrated package of models such as μ A, NA.Triode T5～T7 in the warning device 3 can adopt miniwatt silicone tube or miniwatt germanium tubes such as 3AX31,3AX21 such as 3DG6,3DG8,3DG202; Triode T8 can adopt power tube among 3DG12,3DG120,3DG130, the 2SC1008 etc.; Diode D3 and D4 can adopt the diode of series such as 1N4148 and 2AK, 2CK; Controllable silicon D5 can adopt the controllable silicon of the above 3CT series of 1A/50V and KP5A6 etc.; Integrated oscillator circuit IC2 can adopt integrated packages such as KD9561, KD9562.Transformer B in the supply unit 4 can adopt the common transformer of 5～10W; Stabilivolt D9 can adopt 2CW51～53, and also available resistance substitutes, and integrated stable voltage circuit IC3, IC4 can adopt integrated packages such as 7806,7809,7812 of μ A, NA, μ PC series; Integrated amplifier IC5 can adopt 741 integrated packages of series such as μ A, NA; Charge member R4 can substitute with diode 1N4001～1N4007 etc.
The utility model is compared with existing technology has following advantage:
1. the anti-newspaper property of separating is strong. Transmission line adopts the dual fail-safe measure, with its any short circuit, opening circuit all can cause warning.
2. antijamming capability is strong, the reliability height, and false alarm prevention capability is strong. Power acquisition dual fail-safe, alternating current are cut off or have a power failure, and can automatically change direct current work over to. Non-human body approach inductor all can not send warning.
3. the utility model volume is little, in light weight, with low cost, is suitable for popularizing.
Claims (4)
1, a kind of human body induction type electronic anti-theft alarm comprises sensing device, warning device and supply unit, it is characterized in that:
1) described sensing device comprises oscillator, and it is exported through monofier, voltage multiplier and direct current amplifier input driving device, and oscillator input end and inductor in the described sensing device join, and described inductor is metallic object or the non-metallic body that has wire netting,
2) described warning device comprises switching amplifier, drive unit in the described sensing device of its input termination, its output is through output amplifier, trigger and warning signal monofier input acoustical generator, and the interlocking amplifier joins with switching amplifier and output amplifier respectively;
3) described supply unit comprises fairing, and its output is joined with voltage stabilizer and under-voltage indicator respectively through converter, and described voltage stabilizer output is joined with described sensing device and warning device respectively.
2, human body induction type electronic anti-theft alarm as claimed in claim 1, it is characterized in that: described oscillator comprises inductance, electric capacity and triode, described monofier comprises a field effect transistor; Described voltage multiplier comprises rectifier doubler of being made up of diode, electric capacity and the wave filter of being made up of electric capacity, resistance; Described direct current amplifier is made up of the direct current integrated amplifier; Described drive unit comprises triode, electronic switch and relay.
3, human body induction type electronic anti-theft alarm as claimed in claim 1 or 2 is characterized in that: the amplifier that described switching amplifier, interlocking amplifier and output amplifier all are made up of triode; Described trigger comprises controllable silicon; Described warning signal amplifier comprises triode and integrated amplifier.
4, human body induction type electronic anti-theft alarm as claimed in claim 3, it is characterized in that: described converter comprises diode and switch; Described voltage stabilizer is made up of the direct current integrated stable voltage circuit; Described under-voltage indicator comprises integrated amplifier and light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219077 CN2062083U (en) | 1989-12-26 | 1989-12-26 | Theft-proof electronic alarm by human body induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219077 CN2062083U (en) | 1989-12-26 | 1989-12-26 | Theft-proof electronic alarm by human body induction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2062083U true CN2062083U (en) | 1990-09-12 |
Family
ID=4874026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89219077 Withdrawn CN2062083U (en) | 1989-12-26 | 1989-12-26 | Theft-proof electronic alarm by human body induction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2062083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447822C (en) * | 2004-02-20 | 2008-12-31 | 株式会社有信 | Human body detection sensor |
| CN109887214A (en) * | 2019-02-20 | 2019-06-14 | 江苏大学 | Non-contact high-sensitivity alarm, design and application method based on body capacitance induction |
-
1989
- 1989-12-26 CN CN 89219077 patent/CN2062083U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447822C (en) * | 2004-02-20 | 2008-12-31 | 株式会社有信 | Human body detection sensor |
| CN109887214A (en) * | 2019-02-20 | 2019-06-14 | 江苏大学 | Non-contact high-sensitivity alarm, design and application method based on body capacitance induction |
| CN109887214B (en) * | 2019-02-20 | 2021-02-12 | 江苏大学 | Non-contact high-sensitivity alarm based on human body capacitance induction, design and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |