CN204496636U

CN204496636U - A kind of household infrared ray warning circuit

Info

Publication number: CN204496636U
Application number: CN201520232672.5U
Authority: CN
Inventors: 陈敬聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-12
Filing date: 2015-04-12
Publication date: 2015-07-22
Anticipated expiration: 2025-04-12

Abstract

The utility model discloses a kind of household infrared ray warning circuit, comprise start-up circuit and warning circuit, start-up circuit comprises single-pole double-throw switch (SPDT) S1, chip IC 1, light emitting diode T1, photodiode T2 and potentiometer RP1, and warning circuit comprises chip IC 2, chip IC 3, triode VT1, triode VT2, loudspeaker B and light emitting diode T4.The utility model circuit uses 555 timers as Signal Processing Element, adopt light emitting diode and photodiode as signal source, as long as someone touches infrared ray, just can send alerting signal within the extremely short time, single-pole double-throw switch (SPDT) is provided with in circuit, can warning device be closed when owner is in, save energy consumption, the alarm using this circuit to make has that circuit structure is simple, cost of manufacture is low, the advantage of highly sensitive, saves energy.

Description

A kind of household infrared ray warning circuit

Technical field

The utility model relates to a kind of warning circuit, specifically one be quick on the draw, the simple household infrared ray warning circuit of structure.

Background technology

Along with improving constantly of living standard, the security protection work of people to family is day by day paid attention to, and time especially night, owner slept soundly, thief slips in family and steals valuables, and therefore, installing burglar alarm is at home very effective antitheft mode.But it is also few for the alarm of average family on market, also there is the defects such as reflection is insensitive, rate of false alarm is high in the several of minority, alarm one direct-open not only affects the life-span of alarm, and it is high to consume energy, add use cost, the alarm volume produced is comparatively large, and complex structure is poor for applicability.

Utility model content

The purpose of this utility model is to provide one to be quick on the draw, the simple household infrared ray warning circuit of structure, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of household infrared ray warning circuit, comprises start-up circuit and warning circuit; Described start-up circuit comprises single-pole double-throw switch (SPDT) S1, chip IC 1, light emitting diode T1, photodiode T2 and potentiometer RP1, and described warning circuit comprises chip IC 2, chip IC 3, triode VT1, triode VT2, loudspeaker B and light emitting diode T4;

Switch S 1 connects the positive pole of power supply E1, the other end contact resistance R1 of switch S 1, a stiff end of potentiometer RP1, 1 pin of chip IC 1 and 7 pin of chip IC 1, the positive pole of the other end connecting luminous diode T1 of resistance R1, the negative pole of light emitting diode T1 connects the negative pole of power supply E1, 4 pin of electric capacity C1 and chip IC 1 ground connection, 2 pin contact resistance R2 of chip IC 1, the other end of resistance R2 connects 3 pin of chip IC 1, the other end of electric capacity C1 and the moved end of single-pole double-throw switch (SPDT) S2, 5 pin of chip IC 1 connect the not moved end 2 of single-pole double-throw switch (SPDT) S2, 6 pin of chip IC 1 connect another stiff end and the resistance R3 of potentiometer RP1, the other end of resistance R3 connects the positive pole of photodiode T2, the negative pole of photodiode T2 connects the not moved end 1 of single-pole double-throw switch (SPDT) S2, the base stage of the sliding end connecting triode VT1 of potentiometer RP1, the emitter of triode VT1 connects the positive pole of power supply E2, the collector contact resistance R4 of triode VT1, resistance R6, resistance R8, 1 pin of chip IC 2, 1 pin of chip IC 3 and 8 pin of chip IC 3, the other end of resistance R4 connects the positive pole of diode T3, the collector of the negative pole connecting triode VT2 of diode T3, the emitter of triode VT2 connects the negative pole of power supply E2, electric capacity C2, electric capacity C3, electric capacity C5, electric capacity C6, the negative pole of light emitting diode T4, 5 pin of chip IC 2 and 5 pin of chip IC 3 ground connection, the base stage contact resistance R7 of triode VT2, the other end of resistance R7 connects 8 pin of chip IC 2 and 7 pin of chip IC 3, the other end contact resistance R5 of resistance R6 and 2 pin of chip IC 2, the other end of resistance R5 connects the other end of electric capacity C3, 3 pin of chip IC 2 and 6 pin of chip IC 2, 4 pin of chip IC 2 connect the other end of electric capacity C2, 7 pin of chip IC 2 connect electric capacity C4, the other end contact resistance R9 of resistance R8 and 2 pin of chip IC 3, the other end of resistance R9 connects the other end of electric capacity C6, 3 pin of chip IC 3 and 6 pin of chip IC 3, 4 pin of chip IC 3 connect the other end of electric capacity C5, the other end of electric capacity C4 connects loudspeaker B, the positive pole of the other end connecting luminous diode T4 of loudspeaker B.

As further scheme of the present utility model: described power supply E1 and power supply E2 is the 10V direct current of 2 joint 5V dry cell compositions.

As further scheme of the present utility model: described chip IC 1, chip IC 2, chip IC 3 are 555 integrated circuit.

As further scheme more of the present utility model: described light emitting diode T1 is SE3470 type infrared-emitting diode, and the model of photodiode T2 is RPM-301B infrared receiver photodiode.

Compared with prior art, the beneficial effects of the utility model are: circuit uses 555 timers as Signal Processing Element, adopt light emitting diode and photodiode as signal source, as long as someone touches infrared ray, just can send alerting signal within the extremely short time, single-pole double-throw switch (SPDT) is provided with in circuit, warning device can be closed when owner is in, save energy consumption, the alarm using this circuit to make have that circuit structure is simple, cost of manufacture is low, the advantage of highly sensitive, saves energy.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of household infrared ray warning circuit;

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, a kind of household infrared ray warning circuit, comprise start-up circuit and warning circuit, start-up circuit comprises single-pole double-throw switch (SPDT) S1, chip IC 1, light emitting diode T1, photodiode T2 and potentiometer RP1, and described warning circuit comprises chip IC 2, chip IC 3, triode VT1, triode VT2, loudspeaker B and light emitting diode T4;

Power supply E1 and power supply E2 is the 10V direct current of 2 joint 5V dry cell compositions, chip IC 1, chip IC 2, chip IC 3 are 555 integrated circuit, described light emitting diode T1 is SE3470 type infrared-emitting diode, and the model of photodiode T2 is RPM-301B infrared receiver photodiode.

Principle of work of the present utility model is: the alarm made by this circuit is placed on door, window or valuables storeroom, single-pole double-throw switch (SPDT) S2 is pulled not position, moved end 1, the infrared ray that in circuit, light emitting diode T1 sends is received by diode T2, so 3 pin of chip IC 1 export high level, triode VT1 base stage no current, warning circuit does not work.When there being uninvited guest to block infrared light, diode T2 conducting, so the base stage of triode VT1 has electric current to flow through, triode VT1 conducting, warning circuit switches on power, triode VT2 is discharge tube, discharge path is provided by the element of external circuit, to report to the police the many thanks oscillatory circuit of voltage signal through being made up of chip IC 2 and chip IC 3 and peripheral original paper thereof formed, input voltage size is converted to the voltage of output frequency height by oscillatory circuit, loudspeaker B and photodiode T4 is driven by multi-resonant oscillating circuit, start to report to the police, circuit uses 555 timers as Signal Processing Element, adopt light emitting diode and photodiode as signal source, as long as someone touches infrared ray, just can send alerting signal within the extremely short time, single-pole double-throw switch (SPDT) is provided with in circuit, warning device can be closed when owner is in, save energy consumption, it is simple that the alarm using this circuit to make has circuit structure, cost of manufacture is low, highly sensitive, the advantage of saves energy.

Claims

1. a household infrared ray warning circuit, comprise start-up circuit and warning circuit, it is characterized in that, described start-up circuit comprises single-pole double-throw switch (SPDT) S1, chip IC 1, light emitting diode T1, photodiode T2 and potentiometer RP1, and described warning circuit comprises chip IC 2, chip IC 3, triode VT1, triode VT2, loudspeaker B and light emitting diode T4;

2. a kind of household infrared ray warning circuit according to claim 1, is characterized in that, described power supply E1 and power supply E2 is the 10V direct current of 2 joint 5V dry cell compositions.

3. a kind of household infrared ray warning circuit according to claim 1, is characterized in that, described chip IC 1, chip IC 2, chip IC 3 are 555 integrated circuit.

4. a kind of household infrared ray warning circuit according to claim 1, is characterized in that, described light emitting diode T1 is SE3470 type infrared-emitting diode, and the model of photodiode T2 is RPM-301B infrared receiver photodiode.