CN2165487Y - Electronic burglar alarm device - Google Patents

Abstract

The utility model relates to an electronic anti-theft alarm device. The electronic anti-theft alarm device is an electronic anti-theft alarm device used for a door and a window. Except that the electronic anti-theft alarm device is provided with a linear circuit, a triggering circuit, an alarm circuit, a reset circuit, and a power supply which are suitable for sensing sheets, the electronic anti-theft alarm device is also further is provided with an artificial electromagnetic field circuit, an electromagnetic field selection circuit which is matched with the artificial electromagnetic field circuit, and an amplitude limiting voltage stabilizing circuit. The electronic anti-theft alarm device realizes alarm and theft protection through the induction signal of a human body. The electronic anti-theft alarm device has the advantages of high sensitivity, strong anti-interference capacity, and low power consumption. The electronic anti-theft alarm device is especially suitable for being adopted by a family.

Description

Electronic burglar alarm device

The utility model belongs to a kind of burglar alarm that is used for door and window.

Present patent applied for and be used for the machinery of door and window, electronics, in the burglar alarm of electromechanical, the ratio of machinery burglar alarm accounts for more than 80 percent of amount of the application for patent, triggers with " the electronic anti-theft Warning door bell lock " of pronunciation device and China's patent 90206878.4 are disclosed and a kind ofly then exports time delayed signal and simulate trigger switch and make " the multifunction electronic alarming lock " of its audible alarm all belong to mechanical trigger-type electric anti-thief device category in order to open by warning spring leaf in the mechanical lock and the warning triggered activity key contacts buffer circuit of delaying time as disclosed a kind of electronic circuit and the band set up in safety lock of China's patent 91205234.1.And China's patent 91205274.0 disclosed a kind of prior prefabricated passwords, and under the control of on-off circuit, reset circuit, cipher control circuit, make electromagnet in the mechanical lock drive the action of dead bolt driving stem and " the touch formula multifunction electronic puzzle theft-proof lock " that mould sign indicating number, error code in limited time report to the police is set and then belong to another kind of electronic touch formula burglar alarm scope by the password on the password board.

The purpose of this utility model is the burglar alarm that further proposes electromagnetic field signal is changed into the human body induction type structure of pulsating direct current signal.

Its solution is: this burglar alarm is applicable to the linear circuit of vane by setting, trigger circuit, warning circuit, reset circuit and power supply and outside forming, also further be provided with simultaneously by integrated circuit, resistance, the function waveform that electric capacity is formed produces circuit and by an end ground connection (being the reference edge of circuit), the other end is connected to the step-up transformer of the earth after the diode half-wave rectification by terminal, pulse boosting that diode is formed and rectification circuit and form the artificial electromagnetic field circuit of 30HZ～300HZ, and coupling is by integrated circuit, resistance, the electromagnetic field that electric capacity is formed is selected circuit and secondary through diode rectification and through triode by transformer, resistance, the amplitude limit mu balanced circuit that stabilivolt is formed.

According to the burglar alarm that such scheme is made, realize alarming anti-theft owing to implement utilization direct current supply human-induced signal, therefore, the human body media just can trigger the chimes of doom circuit when entering antitheft scope; Again because adopted highly sensitive, strong interference immunity, low in energy consumption, the circuit structure simple, that price is low is installed, install so this alarm is particularly suitable for family, have promotional value widely.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the principle of work block diagram of the burglar alarm that provides of the utility model.

Fig. 2 is the circuit diagram I of this burglar alarm.

Fig. 3 is the circuit diagram II of this burglar alarm.

Fig. 4 is the reset circuit figure of this burglar alarm.

As shown in the figure, by by integrated circuit (IC) ₁₀, resistance R ₁₉, R ₂₀, capacitor C ₈, C ₉The function waveform of forming produces circuit and step-up transformer B ₁, diode D ₄Pulse boosting of forming and rectification circuit and form the artificial electromagnetic field circuit 4 of 30HZ～300HZ, to guarantee existing all the time of electromagnetic field, step-up transformer B wherein ₁The ground end (being the reference edge of circuit) of an end A ' connection circuit; Other end A is through diode D ₄After the half-wave rectification by A ₀Be connected to the earth.Electromagnetic field selects circuit by integrated circuit (IC) ₉, resistance R ₁₈, R ₁₈, capacitor C ₇Form.When civil power was arranged, the voltage E behind its rectifying and wave-filtering was added in resistance R ₁₇, R ₁₈On the dividing potential drop branch road of forming, make integrated circuit (IC) ₉Output terminal be low level, integrated circuit (IC) ₁₀Quit work, do not have artificial electromagnetic field and produce.Its electromagnetic field is secondary through diode D by transformer B's ₅Rectification and via triode BG ₃, resistance R ₂₁, R ₂₄, the amplitude limit stabilizing circuit formed of stabilivolt DW provides a stable civil power electromagnetic field.Resistance R wherein ₂₄Be diode D ₄Rectification load, also be triode BG ₃Pull-up resistor.During no civil power, integrated circuit (IC) ₁₀In running order, no matter the artificial electromagnetic field of generation 30HZ～300HZ like this, is civil power to be arranged or do not have civil power, i.e. all there is an electromagnetic field that never disappears in interchange or direct current supply in its antitheft scope.

Linear circuit 1 is by integrated circuit (IC) ₁, capacitor C ₁, resistance R ₁The follow circuit of forming is by diode D ₁, capacitor C ₂Resistance R ₂The detecting circuit of forming is by integrated circuit (IC) ₂, adjustable resistance W, resistance R ₃, R ₄, capacitor C ₃The pulsating direct current amplifying circuit of forming and by integrated circuit (IC) ₃, resistance R ₅, R ₆, R ₇The shaping circuit of forming and common formation.

Trigger circuit 3 are by integrated circuit (IC) ₅, diode D ₂The triggering tandem circuit of forming is by integrated circuit (IC) ₆, resistance R ₁₂, capacitor C ₄The time of fire alarming circuit of forming is by integrated circuit (IC) ₇, resistance R ₁3, R ₁₄, R ₁₅, capacitor C ₆, the delayed alarm circuit formed of indicator LED and by integrated circuit (IC) ₈, diode D ₃The controllable inverter of forming and common formation.

Warning circuit 6 is by the integrated circuit (IC) that can produce police whistle sound ₁₁With by triode BG ₁, BG ₂, resistance R ₁₆, the driving circuit formed of microphone device SX and common formation.

Power supply 5 is by transformer B, diode D ₆, D ₇, capacitor C ₁₀, C ₁₁, C ₁₂Voltage transformation of forming and current rectifying and wave filtering circuit and by integrated circuit (IC) ₁₂, resistance R ₂₂, R ₂₃, capacitor C ₁₃, C ₁₄, C ₁₅, C ₁₆, C ₁₇Direct current supply battery (or accumulator) Ec that forms and common formation.

Civil power obtains one group of 7.5 volts of voltage with tap on secondary after transformer B step-down, it gives diode D ₆, D ₇Full-wave rectification, capacitor C ₁₂After the filtering, supply with integrated circuit (IC) ₁₂The input end of three-terminal voltage-stabilizing, its output terminal are exported 6 volts of stable voltages, and through capacitor C ₁₃, C ₁₅, resistance R ₁₂Once more after the filtering, through terminal E _CDSupply with integrated circuit (IC) ₄～IC ₁₀, and direct current supply battery (or accumulator) Ec charged, making it to reach an equilibrium state, direct current supply battery (or accumulator) Ec is once more through resistance R ₂₃, capacitor C ₁₆After the filtering by terminal E _CDSupply with integrated circuit (IC) ₁～IC ₃Capacitor C ₁₀, C ₁₁, C ₁₄As the interference of eliminating on the civil power, capacitor C ₁₇Disturb as the pulsation of eliminating police whistle sound.Another secondary road is through resistance D ₅After the half-wave rectification, by triode BG ₃, voltage stabilizing diode DW, resistance R ₂₁, R ₂₄After the fixed amplitude circuit fixed ampllitude of forming, deliver to terminal A.Well reliably contact with the earth, 0 of vane reliably contacts with the door and window lock-bit.

When human instrument (spiral shell cutter) is forced open the door and is contacted lock-bit, terminal A.The electromagnetic field signal of output passes through vane 0 feed-in integrated circuit (IC) through the earth, human body and instrument ₁Input end, again through diode D ₁Detect fluctuating signal and through resistance R ₂, capacitor C ₂Obtain the less DC level of fist-order wave after the filtering and send into integrated circuit (IC) ₂In-phase end, by integrated circuit (IC) ₂Amplify, here by resistance R ₄, R ₂, adjustable resistance W, capacitor C ₃The feedback circuit of forming is the decision integrated circuit (IC) ₂The gain size, regulate adjustable resistance W and can change gain.Integrated circuit (IC) ₂Output voltage via integrated circuit (IC) ₃, resistance R ₅, R ₆Shaping, output one triggers high level, and through anti-phase integrated circuit (IC) ₅Obtain a low level after anti-phase, make diode D ₂Conducting, capacitor C ₄Discharge into low level, integrated circuit (IC) ₆The output high level, this high level is through resistance R ₁₄To capacitor C ₆Capacitor C is worked as in charging ₆On voltage be charged to 2/3 terminal voltage E _CDThe time, it is exported then by high level displacement low level, and by resistance R ₁₅Deliver to and be used for controlled anti-phase integrated circuit (IC) ₈Input end, integrated circuit (IC) ₈Output terminal become high level, the police whistle sound circuit is triggered and exports the police whistle sound signal, again by resistance R ₁₆Deliver to compound transistor BG ₁, BG ₂Send police whistle sound and drive loudspeaker.

Reset circuit 2 is by integrated circuit (IC) ₄, capacitor C ₄, reset button AN, resistance R ₈, R ₉, R ₁₀Form.Its effect is to consider for turnover switch door and window.When opening the door (window), when lock contact when open door with key, sent into the pre-alarm time-delay state in 10 seconds by circuit, promptly should report to the police after 10 seconds, owner can press reset button AN at leisure in 10 seconds of abundance, and circuit can be removed warning like this; When going out, will press reset button AN and lock a door again, press reset button AN after, capacitor C ₅On voltage be 0 volt, be after 3 minutes capacitor C ₅On level just can be higher than by resistance R ₉, R ₁₀The bleeder circuit of being formed is in resistance R ₁₀On the level that distributed.Anti-phase integrated circuit (IC) ₄Through resistance R ₁₁Export a low level, to integrated circuit (IC) ₈Terminal B make its point close capacitor C after 3 minutes ₅On voltage be higher than resistance R ₁₀On level, reverse integrated circuit (IC) ₄Export a high level, controlled anti-phase integrated circuit (IC) ₈Release will allow trigger pip effective.The capacitor C of this reset circuit ₅Be in series with resistance R on the circuit ₈To guarantee capacitor C ₅What discharge and recharge normally carries out.

The utility model is under the condition that electromagnetic field exists, i.e. terminal A.Can be abutted against the earth and vane 0 can be abutted against the door (window) lock condition under reliably reported to the police, its sensitivity can reach when holding spiral shell cutter wooden handle, electricians' plier glue handle or wearing insulating glove all can accurately report to the police.

Claims (6)

1, a kind of burglar alarm that is used for door and window has the linear circuit, trigger circuit, warning circuit, reset circuit and the power supply that are applicable to vane, and it is characterized in that: this burglar alarm also further is provided with by integrated circuit (IC) ₁₀, resistance R ₁₉, R ₂₀, capacitor C ₈, C ₉The function waveform of forming produce circuit and by an end A ' ground connection (being the reference edge of circuit), other end A through diode D ₄Terminal A after the half-wave rectification.Be connected to the step-up transformer B of the earth ₁, diode D ₄Pulse boosting of forming and rectification circuit and form the artificial electromagnetic field circuit 4 of 30HZ～300HZ, and coupling is by integrated circuit (IC) ₉, resistance R ₁₇, R ₁₈, capacitor C ₇The electromagnetic field of forming is selected circuit and secondary through diode D by transformer B ₅Rectification and through triode BG ₃, resistance R ₂₁, R ₂₄, the amplitude limit stabilizing circuit formed of stabilivolt DW.

2, burglar alarm according to claim 1 is characterized in that: linear circuit 1 is by integrated circuit (IC) ₁, capacitor C ₁, resistance R ₁The follow circuit of forming is by diode D ₁, capacitor C ₂, resistance R ₂The detecting circuit of forming is by integrated circuit (IC) ₂, adjustable resistance W, resistance R ₃, R ₄, capacitor C ₃The pulsating direct current amplifying circuit of forming and by integrated circuit (IC) ₃, resistance R ₅, R ₆, R ₇The shaping circuit of forming and common formation.

3, burglar alarm according to claim 1 is characterized in that: trigger circuit 3 are by integrated circuit (IC) ₅, diode D ₂The triggering tandem circuit of forming is by integrated circuit (IC) ₆, resistance R ₁₂, capacitor C ₄The time of fire alarming circuit of forming is by integrated circuit (IC) ₇, resistance R ₁₃, R ₁₄, R ₁₅, capacitor C ₆, the delayed alarm circuit formed of indicator LED and by integrated circuit (IC) ₈, diode D ₃The controllable inverter of forming and common formation.

4, burglar alarm according to claim 1 is characterized in that: warning circuit 6 is by the integrated circuit (IC) that can produce police whistle sound ₁₁With by triode BG ₁, BG ₂, resistance R ₁₆, the driving circuit formed of microphone device SX and common formation.

5, burglar alarm according to claim 1 is characterized in that: power supply 5 is by transformer B, diode D ₆, D ₇, capacitor C ₁₀, C ₁₁, C ₁₂Voltage transformation of forming and current rectifying and wave filtering circuit and by integrated circuit (IC) ₁₂, resistance R ₂₂, R ₂₃, capacitor C ₁₃, C ₁₄, C ₁₅, C ₁₆, C ₁₇Direct current supply battery (or accumulator) Ec that forms and common formation.

6, burglar alarm according to claim 1 is characterized in that: reset circuit 2 is by integrated circuit (IC) ₄, capacitor C ₄, reset button AN, resistance R ₈, R ₉, R ₁₀Form.

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