CN203733239U - Touch acoustic equipment anti-theft alarm - Google Patents

Abstract

The utility model discloses a touch acoustic equipment anti-theft alarm, which comprises a composite triode type photoelectric coupling chip IC1, a positive potential trigger music doorbell analog chip IC2 and a 10muF capacitor C1, wherein the composite triode type photoelectric coupling chip IC1 is internally provided with a light-emitting diode and NPN type crystal triodes, the light-emitting diode is connected to a negative electrode of a button cell 3V direct-current power supply through an equipment switch, and the other end is connected to a pin 2 of the positive potential trigger music doorbell analog chip IC2 through a 1-kilohm resistor R1; and the number of the NPN type crystal triodes is two, a base electrode of one of the two NPN type crystal triodes is connected to an alarm point location touch point M1, a collector electrode is connected to a collector electrode of the other NPN type crystal triode and then connected to a positive electrode of the button cell 3V direct-current power supply, and an emitting electrode and a base electrode of the other NPN type crystal triode are connected to an emitting electrode of the other NPN type crystal triode and then connected to a pin 2 of the positive potential trigger music doorbell analog chip IC2. The touch acoustic equipment anti-theft alarm disclosed by the utility model has the beneficial effects of simple circuit, compact size and reliable performance.

Description

A kind of touch sound equipment burglar alarm

Technical field

The utility model relates to a kind of burglar alarm, and more specifically, it relates to a kind of touch sound equipment burglar alarm.

Background technology

Along with social development, the progress of science and technology, various Ground Connection in Intelligent Building security protection settings emerge in an endless stream.But also mostly beating the high-tech reputations such as Internet of Things, collecting the expense that user is high, simultaneously because the complexity of security protection setting is also led the huge of volume processed, be not suitable for individual unit household and use.

Summary of the invention

The purpose of this utility model is to overcome deficiency of the prior art, provides that a kind of circuit is simple, volume is small and exquisite, dependable performance, touch sound equipment burglar alarm easy to use.

This touch sound equipment burglar alarm, comprises that IC1 compound transistor type photoelectric coupling chip, IC2 positive potential trigger music door-bell analog chip, 10 μ F capacitor C 1; Described IC1 compound transistor type photoelectric coupling chip internal has light emitting diode, negative-positive-negative transistor, and wherein light emitting diode connects button cell 3V DC power cathode by facility switching, and the other end connects No. 2 pins of IC2 by R1 resistance 1K Ω; Wherein negative-positive-negative transistor is two, and a base stage connects alarm set point position touch point M1, and collector connects another collector and is connected to button cell 3V DC power anode, and emitter connects another base stage and to emitter, connects No. 2 pins of IC2; Described IC2 positive potential triggers on music door-bell analog chip No. 2 pins, No. 1 pin, No. 5 pins, No. 6 pins, No. 3 pins and No. 4 pins; Wherein No. 2 pins divide the emitter that connects IC1, No. 1 pin is connected to button cell 3V DC power anode, No. 5 pin connects No. 6 pins by R3 resistance 30K Ω, No. 3 pins connect negative-positive-negative transistor VT1 base stage to emitter facility switching and connect button cell 3V DC power cathode, connect by R4 resistance 1K Ω and HTD capacitive character acoustical generator and connect the sound-producing device forming to be connected to button cell 3V DC power anode to collector; Pressure stabilization function is played at the optical diode two ends that described 10 μ F capacitor C 1 two ends connect IC1 inside.

The beneficial effects of the utility model are: the utility model is a kind of burglar alarm that is placed in the discrepancy sensitive position in room, individual unit, once in its work, someone touches just can send alarm sound.According to different needs, can also select different alarm sounds, and sound can not stop along with stopping touching, once touch to produce, report to the police, this alarm is just in warning locking state, and the people that only receives a crime report presses restarts switch, alarm is just understood stop alarm, returns to alert status.Common button cell power supply just can make system stability move reliably, and build is small and exquisite very convenient and practical, is particularly suitable for family and uses.Alarm actuating contact can be placed in door handle inside, and apparatus main body can be placed on an inner side.At night, can effectively remind hypnopompic owner, have people deliberately to touch door outer handle, note antitheft.Alarm sound also frightens lawless person effectively simultaneously, and it is flown the pit.

Accompanying drawing explanation

Fig. 1 is the utility model circuit structure diagram.

Description of reference numerals: alarm set point position touch point M ₁1; IC ₁in light emitting diode 2; IC ₁in negative-positive-negative transistor 3; IC ₁emitter 4; IC ₁compound transistor type photoelectric coupling chip 5; R ₁resistance 1K Ω 6; IC ₂no. 2 pins 7; IC ₂no. 1 pin 8; IC ₂no. 5 pins 9; IC ₂no. 6 pins 10; R ₃resistance 30K Ω 11; IC ₂no. 4 pins 12; IC ₂positive potential triggers music door-bell analog chip 13; IC ₂no. 3 pins 14; R ₄resistance 1K Ω 15; HTD capacitive character acoustical generator 16; Button cell 3V direct supply 17; Facility switching 18; 10 μ F capacitor C ₁19; Negative-positive-negative transistor VT ₁20.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not represent that the utility model is limited in described embodiment.On the contrary, the utility model is by alternative, modified and the equivalent contained in the scope of the present utility model that can be included in attached claims restriction.

This alarm apparatus is mainly a complex pipe output type photoelectrical coupler, once disturbed its inner compound transistor just to transfer conducting to from cut-off state by human body stray electromagnetic signals, trigger positive potential music door-bell analog chip and input out voice signal, signal converts voltage to and is added in HTD (extremely low power microphone device) above after triode amplifies, and produces larger volume.And light emitting diode in the complex pipe output type photoelectrical coupler of this alarm can, after alarm is triggered, make compound transistor be stabilized in full kind of the state of the degree of depth again.Like this with regard to not can because of touch stopping ， Er Chen only reports to the police.Lawless person is after hearing chimes of doom, and moment unclamps, or to destroy contact be also futile, and alarm sound can be continued until that the people that receives a crime report turns off alarm switch in door.Antitheft very practical to night.

This alarm components and parts are selected as far as possible small and exquisite, economize on electricity.If device is embedded to the interlayer inside of Anti-theft door and window, and touch mode alarm point is embedded into the sensitive part of door and window, and gauge tap is placed in to home in door and window, can realize electronic alarm anti-theft door window, its cost is lower, and sensitive alarm is reliable.

IC in circuit ₁be a slice compound transistor type photoelectrical coupler chip, luminotron is wherein through external R ₁resistance is serially connected in IC ₁in the emitter circuit of middle compound transistor, formed a special emitter follower circuit.IC ₂be a slice CMOS music door-bell analog chip, its output signal is through VT ₁amplify rear drive HTD sounding sound, due to HTD be capacitive character without part, direct current cannot pass through, and therefore will and meet R at HTD two ends ₄resistance, through VT ₁a DC load path is provided, makes VT ₁normally working, also energy will be through VT ₁the sound signal of amplifying converts voltage to and is added in HTD two ends, makes HTD send larger volume.TC ₂trigger end directly receive IC ₁the transmitting of middle compound transistor, like this, IC ₂whether work and be just subject to IC ₁middle compound transistor emitter current potential is controlled.After circuit powers up, do not touch M ₁time, IC ₁in compound transistor cut-off, it launches very electronegative potential, makes IC ₂2 pin trigger ends be electronegative potential, IC ₂be not triggered, HTD does not ring, and whole circuit is in static vigilance task state.Due to IC ₁in compound transistor there is higher enlargement factor (β>=5000), so, when there being people to touch M ₁time, the base stage that is added in this compound transistor by the stray electromagnetic signals of human body sensing will make its conducting, thereby cause it to be serially connected in the IC in collector ₁in luminotron be lit, the conducting of having lighted and maintained compound transistor of this luminotron, has formed positive feedback chain reaction thus, finally makes compound transistor be stabilized in the state that the degree of depth is saturated, circuit completes the auto-lock function after touch.Now, because the compound transistor degree of depth is saturated, its emitter current potential is upgraded to the noble potential that approaches supply voltage, IC ₂the work that is triggered, the sound signal of output is through VT ₁after amplification, promote HTD and send audio alarming signal.Because circuit has been scolded self-locking once touch, so, even if stop touching M ₁, circuit will continue to keep the state of warning, if desired reports to the police and stops, and must close power switch, makes circuit get back to the static duty of initial power-up.Again touch M ₁time circuit will repeat the above-mentioned course of work.

The components and parts of this warning device are selected, IC ₁selecting model is the compound output type photoelectrical coupler of TIL113.IC ₂can select any music door-bell analog chip being triggered by positive potential, other all use ordinary electronic circuit elements device without device.

Claims (1)

1. a touch sound equipment burglar alarm, is characterized in that: comprise that IC1 compound transistor type photoelectric coupling chip (5), IC2 positive potential trigger music door-bell analog chip (13), 10 μ F capacitor C 1 (19); There are light emitting diode (2), negative-positive-negative transistor (3) in described IC1 compound transistor type photoelectric coupling chip (5) inside, wherein light emitting diode (2) connects button cell 3V direct supply (17) negative pole by facility switching (18), and the other end connects No. 2 pins (7) of IC2 by R1 resistance 1K Ω (6); Wherein negative-positive-negative transistor is (3) two, a base stage connects alarm set point position touch point M1 (1), collector connects another collector and is connected to button cell 3V direct supply (17) positive pole, and emitter connects another base stage and to emitter (4), connects No. 2 pins (7) of IC2; Described IC2 positive potential triggers on music door-bell analog chip (13) No. 2 pins (7), No. 1 pin (8), No. 5 pins (9), No. 6 pins (10), No. 3 pins (14) and No. 4 pins (12); Wherein No. 2 pins (7) minute connect the emitter (4) of IC1, No. 1 pin (8) is connected to button cell 3V direct supply (17) positive pole, No. 5 pins (9) connect No. 6 pins (10) by R3 resistance 30K Ω (11), No. 3 pins (14) connect negative-positive-negative transistor VT1 (20) base stage to emitter facility switching (18) and connect button cell 3V direct supply (17) negative pole, connect by R4 resistance 1K Ω (15) and HTD capacitive character acoustical generator (16) and connect the sound-producing device forming to be connected to button cell 3V direct supply (17) positive pole to collector; Pressure stabilization function is played at optical diode (2) two ends that described 10 μ F capacitor C 1 (19) two ends connect IC1 inside.