CN2179611Y

CN2179611Y - Microwave red infrared double-signal detecting alarm

Info

Publication number: CN2179611Y
Application number: CN 93239806
Authority: CN
Inventors: 陈建文
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-30
Filing date: 1993-12-30
Publication date: 1994-10-12
Anticipated expiration: 2003-12-30

Abstract

At present, the induction type alarming device is provided with two types, which are microwave alarming device, and infrared alarming device. The microwave alarm device is easy to be interfered by the electromagnetic waves. The microwave alarm device probably causes a false alarm if a fluorescent lamp is turned on and turned off, or outdoor adjacent objects move. The infrared alarm device can also cause a false alarm because of the temperature change of the cold and hot currents and the environment. The utility model uses the microwave and red infrared detection to monitor at the same time, so the utility model has the advantages of work reliability, and small rate of false alarms. The utility model comprises a microwave emission receiving circuit 1, a community antenna 2, a red infrared detector 5, an amplifying circuit 3, 6, a comparison circuit 4, 7, an AND gate circuit 8, a signal processing circuit 9, an alarm 11, a gating lock controlled electric circuit 12, an indoor controlling circuit 13, and a power supply 14.

Description

Microwave red infrared double-signal detecting alarm

The utility model belongs to the warning device technical field.

Present inductive theft-proof warning device has two kinds of microwave alarm and infrared warning devices.The microwave of microwave alarm can penetrate wall and glass, and easy electromagnetic wave interference if daylight lamp in the switch gear room and adjacent chamber have object of which movement outward, all may produce wrong report.Infrared warning device is subject to the interference of hot and cold air and environment temperature and produces wrong report.

The purpose of this utility model is to provide a kind of existing Microwave Measurement circuit that the dual signal detection alarm device of infrared detection circuit is arranged again.

The utility model comprises microwave and the infrared ray dual signal detects amplifying circuit, signal processing circuit, relay circuit and warning device several sections.The microwave signal testing circuit not only can be launched but also can receive microwave signal, receives to take precautions against the signal that mobile object reflects in the zone, exports AND circuit to after amplifying; The infrared signal testing circuit receives takes precautions against the infrared signal that regional internal heat generation body sends, and exports the other end of AND circuit after amplifying to, has only these two kinds of signals to import simultaneously, exports with Men Caihui.Therefore reduced the possibility of wrong report.With the signal of door output, treated processing of circuit exports relay circuit to, and engage relay and warning device give the alarm.

Fig. 1 is a structural drawing of the present utility model.In conjunction with the accompanying drawings, be described as follows: among the figure, 1 is the microwave transceiver circuit, 2 are emission and reception common antenna, and 3 is amplifying circuit, and 4 is comparator circuit, 5 is infrared detector, and 6 is amplifying circuit, and 7 is comparator circuit, 8 is AND circuit, and 9 is signal processing circuit, and 10 is relay circuit, 11 is alarm, 12 is the door lock controlled control circuit, and 13 is indoor control circuit, and 14 is power supply.Microwave transceiver circuit 1 includes an oscillator, and generation is vibrated, and also reception is by the signal of object reflected back to launch frequency electromagnetic waves by emission and reception common antenna 2, and reflected signal is modulated oscillator signal.When electromagnetic wave when mobile object being arranged in the topped zone, promptly produce the low frequency signal of envelope variation in the signal spectrum of microwave transceiver circuit 1 output, export amplifying circuit 3 to.The output terminal of amplifying circuit 3 is connected to the input end of comparator circuit 4, comparator circuit 4 compares the low frequency signal of input and the voltage of self setting, export one and the corresponding low frequency pulse signal of mobile object, the output terminal of comparator circuit 4 is connected to an input end of AND circuit 8.Infrared detector 5 is Thermoelectric Infrared Sensor, receive and take precautions against the infrared signal that mobile heater sends in the zone, convert the low frequency electric signal to, the input end of the output termination amplifying circuit 6 of infrared detector 5, the input end of the output termination comparator circuit 7 of amplifying circuit 6, the voltage that signal after the amplification is set itself and self by comparator circuit 7 compares, output and the corresponding low frequency pulse signal of mobile heater, another input end of the output termination AND circuit 8 of comparator circuit 7.Only when microwave signal testing circuit and infrared signal testing circuit detected the signal of moving target simultaneously and import AND circuit 8 simultaneously, AND circuit 8 just had low frequency signal and exports.The output terminal of AND circuit 8 is connected to the input end of signal processing circuit 9, and the output terminal of signal processing circuit 9 is connected to the input end of relay circuit 10, and the output terminal of relay circuit 10 is connected to alarm 11.The signal output part of door lock controlled control circuit 12 and indoor control circuit 13 is connected to two state control signal input ends of signal processing circuit 9 respectively.Signal processing circuit 9 has monitor state and non-monitor state two states, and this two states is by door lock controlled control circuit 12 and indoor control circuit 13 control transformation.When signal processing circuit 9 was in non-monitor state, even AND circuit 8 has the low frequency signal input, signal processing circuit 9 was not also worked; When signal processing circuit 9 was in the monitoring state, as long as AND circuit 8 has the input end of signal input signal treatment circuit 9, signal processing circuit 9 output terminals just outputed signal to relay circuit 10, made relay circuit 10 connect alarms 11, gave the alarm.Microwave transceiver circuit 1, amplifying circuit 3, comparator circuit 4, amplifying circuit 6, comparator circuit 7, AND circuit 8, signal processing circuit 9, relay circuit 10 can adopt discrete component, also can adopt integrated circuit.Alarm 11 can use the acoustic alarm device, also can use light crossing-signal, also can use the voice generator.Door lock controlled control circuit 12 can be contained on the door, also can be contained on the coded lock.Microwave signal testing circuit and infrared signal testing circuit can use in some covers parallel connections, are distributed in vast scope, monitor.Power supply 14 is partly supplied with required DC voltage to each.

The utility model has the advantages that: owing to use Microwave Measurement and infrared detection dual mode simultaneously, so the functional reliability height, rate of false alarm reduces, and applied range can be widely used in family, office, bank, public security field.

Fig. 2 is the basic circuit diagram of an embodiment of the present utility model.Among the embodiment, microwave transceiver circuit 1 is the capacitance connecting three point type oscillator of being made up of T1, R1, R2, R3, R4, C1, C2, L1, and oscillation frequency is 1000～2000MHz, and T1 is the 3DG142C triode, and TX receives common antenna for emission.Microwave transceiver circuit 1 is modulated to 0.3～12Hz signal with the signal of reflected back and transports to amplifying circuit 3 through capacitor C 3, amplifying circuit 3 is made up of T2, T3, R5, R6, R7, R8, R9, R10, C4, T2 is 9014 type triodes, T3 is 9013 type triodes, and the signal after the amplification is transported to comparator circuit 4 through C6.Comparator circuit 4 is made up of T4, T5, R11, R12, R13, R14, W3, D7, D8, terminal voltage is+5V on D7, the D8 diode, add to the negative input end of T4, terminal voltage is the positive input terminal that 4V adds to T5 under D7, the D8 diode, T4, T5 are LM324 type integrated circuit, signal by amplifying circuit 3 input is added to the positive input terminal of T4 and the negative input end of T5, exports AND circuit 8(4081 type to by T4, D1 and T5, D2 with fixed voltage respectively after relatively) an input end.Infrared detector 5 is a P2228 type Thermoelectric Infrared Sensor, and output 0.3～12Hz signal provides 6V voltage by stabilivolt WY6V and R21, R22.Amplifying circuit 6 is made up of T6, R23, R24, R25, C10, C11, T6 is a LM324 type integrated circuit, signal after the amplification exports comparator circuit 7 to through C12, comparator circuit 7 is by T7, T8(LM324 type), D3, D4, R26, R27, R28, R29, W1 form, the signal of comparator circuit 7 outputs is transported to another input end of AND circuit 8 through D5, D6.Signal processing circuit 9 is a GAL type programmable gate display, and the signal of AND circuit 8 is transported to its input end, and door lock controlled control circuit 12 and indoor control circuit 13 are received two state exchange control ends respectively, and its output terminal is succeeded appliance circuit 10.Relay circuit 10 is by triode T9(8050 type) R31, D9 and relay form the circuit of the normally opened contact control warning electric bell 11 of relay.Power supply 14 for warning device provide direct current+9V and+the 12V power supply.

Claims

1, a kind of warning device, comprise signal processing circuit (9), relay circuit (10), alarm (11), door lock controlled control circuit (12), indoor control circuit (13), power supply (14), it is characterized in that its signal detecting part is divided into microwave and the infrared ray dual signal detects, comprise microwave transceiver circuit (1), emission and receive common antenna (2), amplifying circuit (3), comparator circuit (4), infrared detector (5), amplifying circuit (6), comparator circuit (7), AND circuit (8); The vibration that microwave transceiver circuit (1) produces is by emission and receive common antenna (2) emission frequency electromagnetic waves, and reception is by the signal of object reflected back, this signal exports amplifying circuit (3) to, the output terminal of amplifying circuit (3) is connected to the input end of comparator circuit (4), and the output terminal of comparator circuit (4) is connected to an input end of AND circuit (8); Infrared detector (5) is a kind of Thermoelectric Infrared Sensor, receive the infrared signal of heater and be converted to the input end that electric signal outputs to amplifying circuit (6), the output terminal of amplifying circuit (6) is connected to the input end of comparator circuit (7), and the output terminal of comparator circuit (7) is connected to another input end of AND circuit (8); The output terminal of AND circuit (8) is connected to the input end of signal processing circuit (9), and the output terminal of signal processing circuit (9) is connected to the input end of relay circuit (10), and the output terminal of relay circuit (10) is connected to the input end of alarm (11); The signal output part of door lock controlled control circuit (12) is connected to a state control signal input end of signal processing circuit (9), and the signal output part of indoor control circuit (13) is connected to another state control signal input end of signal processing circuit (9); Power supply (14) is partly supplied with required DC voltage to each.

2,, it is characterized in that wherein microwave transceiver circuit (1), amplifying circuit (3), comparator circuit (4), amplifying circuit (6), comparator circuit (7), AND circuit (8) adopt discrete component according to the described warning device of claim 1.

3,, it is characterized in that wherein microwave transceiver circuit (1), amplifying circuit (3), comparator circuit (4), amplifying circuit (6), comparator circuit (7), AND circuit (8) adopt integrated circuit according to the described warning device of claim 1.