CN103198601A

CN103198601A - Human body approach monitoring alarm device

Info

Publication number: CN103198601A
Application number: CN2013101323208A
Authority: CN
Inventors: 周玉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-16
Filing date: 2013-04-16
Publication date: 2013-07-10

Abstract

The invention provides a human body approach monitoring alarm device. The human body approach monitoring alarm device is characterized by comprising a 12V direct-current power supply, a microwave detection circuit, a signal identification and amplification circuit and a level power amplification and load circuit. The model number of a microwave detection module integrated circuit (IC) 1 in the microwave detection circuit is TWH9428, and the model number of an integrated circuit (IC) 2 in the signal identification and amplification circuit is TWH9429. The problems that an infrared alarm is poor in effect and unreliable in working performance when used outdoors in summer exist in the process of use of an infrared monitoring device when the environment temperature is high. A person familiar with the working principle of an infrared probe can make use of a detection dead angle and turn off the power supply from the side face or the back face of the infrared probe or destroy the alarm on purpose to enter an infrared protected area. The human body approach monitoring alarm device is a monitoring device capable of carrying out active detection; and the human body approach monitoring alarm device effectively overcomes shortcomings in monitoring devices in markets, or solves problems in the monitoring devices in the markets.

Description

Human body is near the monitoring alarm device

Technical field

The invention belongs to electronic technology and monitoring alarm field, is near the monitoring alarm device about a kind of human body.

Background technology

The mode that monitoring alarm device obtains information mainly contains: at first be market occupy leading position with the infrared sensor be the probe (adding Fresnel Lenses with the pyroelectric effect device) manufacturing warning device; Next is the warning device that the against shock, tamper evident, noiseproof vibration displacement sensor of vehicle-mounted use made; The 3rd is with the warning device that touches, microwave induced probe is made.

Infrared supervising device exists some defectives in actual use really, as: when environment temperature was higher, installing and using people's body heat summer out of doors, to release the Infrared intrusion detector effect just bad, and serviceability is reliable inadequately.The personnel that are familiar with the infrared probe principle of work can manage to utilize and survey the dead angle, from side or the back powered-down of infrared probe or destroy alarm by force, thereby enter infrared strick precaution zone.Infrared probe is to not mobile object, can not in time react to the object of rubescent outer heat not, and the invader can utilize the search coverage of club change infrared probe.The sensitive product that has also can be reported phenomenon by mistake to there being toy to be strayed into the defence area, and these unreliabilities often cause unnecessary trouble to managerial personnel, in the course of time even cause paralysis.

Human body of the present invention is a kind of supervising device of active probe mode near the monitoring alarm device, and it has effectively solved or remedied the shortcoming that some supervising device exists on the market and the problem of existence.

Below describe human body of the present invention in detail near monitoring alarm device related relevant technologies content in implementation process.

Summary of the invention

Goal of the invention and beneficial effect: infrared supervising device also exists some defectives in actual use really, as: when environment temperature was higher, installing and using people's body heat summer out of doors, to release the Infrared intrusion detector effect just bad, and serviceability is reliable inadequately.The personnel that are familiar with the infrared probe principle of work can manage to utilize and survey the dead angle, from side or the back powered-down of infrared probe or destroy alarm by force, thereby enter infrared strick precaution zone.Infrared probe is to not mobile object, can not in time react to the object of rubescent outer heat not, and the invader can utilize the search coverage of club or instrument change infrared probe.The sensitive product that has also can be reported phenomenon by mistake to there being toy to be strayed into the defence area, and these unreliabilities often cause unnecessary trouble to managerial personnel, in the course of time even cause paralysis.Human body of the present invention is a kind of supervising device of active probe mode near the monitoring alarm device, and it has effectively solved or remedied the shortcoming that some supervising device exists on the market and the problem of existence.

Circuit such as microwave emission, low-pass filtering, gating amplification), oscillator coil L and antenna ATX form the circuit working principle: (inside modules comprises human body: by microwave sounding module I C1 near the monitoring alarm device.Microwave sounding module I C1 internal oscillator circuit produces the microwave signal of about 1000MHz, by antenna ATX radiated electromagnetic wave.Circuit such as power supply voltage stabilizing, gating amplification, soft start, the driving of relatively amplifying, delay time), electrochemical capacitor C1 and potentiometer RP form (its inside comprises: by integrated circuit (IC) 2 for signal identification and amplifying circuit.When no human body moves in microwave scanning probe zone, the control output end O pin output low level of signal identification and amplification circuit IC2, at this moment NPN transistor VT1 ends, and makes DC relay J be in release conditions.

When human body moves in monitoring alarm device effective range, external electromagnetic field around it will change, antenna ATX will detect human body and move the variable signal that generates an electromagnetic field and feed back to microwave sounding module I C1 and carry out low pass and handle, and make the signal output part O pin output low frequency voltage signal of microwave sounding module I C1.Because the low-frequency voltage signal of microwave sounding module I C1 output is not enough to promote relay and hummer work, gating amplifies and delay drives so low-frequency voltage signal must be done through integrated circuit (IC) 2, then exports high level from control output end 0 pin of integrated circuit (IC) 2.Last circuit uses 1 NPN transistor VT1 to carry out the high level power amplification to drive DC relay J and hummer HA work, utilizes often opening or the work of normally closed contact control relevant apparatus of DC relay J.

Technical scheme: human body is near the monitoring alarm device, and it comprises 12V direct supply, microwave sounding circuit, signal identification and amplifying circuit, level power amplification and load circuit, it is characterized in that:

The microwave sounding circuit: it is by microwave sounding module I C1, oscillator coil L and antenna ATX form, the model that microwave sounding module I C1 adopts is TWH9428, the Y pin of microwave sounding module I C1 meets an end and the antenna ATX of oscillator coil L, the YO pin of microwave sounding module I C1 connects the other end of oscillator coil L, the anodal VCC of the VDD pin connection circuit of microwave sounding module I C1, the B pin of microwave sounding module I C1 connects the positive pole of electrochemical capacitor C1, the G pin connection circuit ground GND of the negative pole of electrochemical capacitor C1 and microwave sounding module I C1, the O pin of microwave sounding module I C1 connect signal identification and amplifying circuit;

Signal identification and amplifying circuit: the model that integrated circuit (IC) 2 adopts is TWH9429, the B pin of integrated circuit (IC) 2 connects the B pin of microwave sounding module I C1, the I pin of integrated circuit (IC) 2 connects the O pin of microwave sounding module I C1, the WO pin of integrated circuit (IC) 2 connects an end and the movable end thereof of potentiometer RP, the W pin of integrated circuit (IC) 2 connects the other end of potentiometer RP, the anodal VCC of the VDD pin connection circuit of integrated circuit (IC) 2, the G pin connection circuit ground GND of integrated circuit (IC) 2;

The base stage of level power amplification and load circuit: NPN transistor VT1 connects the O pin of integrated circuit (IC) 2 by resistance R 1, the collector of NPN transistor VT1 connects an end and the positive pole of transwitch diode D1 and the negative pole of hummer HA of DC relay J coil, the anodal VCC of the anodal connection circuit of the other end of DC relay J coil and transwitch diode D1 negative pole and hummer HA, the emitter connection circuit ground GND of NPN transistor VT1;

The 12V dc power anode links to each other with circuit anode VCC, and the 12V dc power cathode links to each other with circuit ground GND.

Description of drawings

Accompanying drawing 1 is that human body provided by the invention is near an embodiment circuit working of monitoring alarm device schematic diagram.

Embodiment

According to the human body shown in the accompanying drawing 1 near monitoring alarm device circuit fundamental diagram and description of drawings, and according to annexation between the components and parts in the described each several part circuit of summary of the invention, and the components and parts technical parameter described in the embodiment requires and the circuit production main points are implemented to realize the present invention, below in conjunction with embodiment correlation technique of the present invention is further described.

The selection of components and parts and technical parameter thereof

IC1 is the microwave sounding module, and the model of selecting for use is TWH9428;

Integrated circuit (IC) 2 is signal identification and amplifying circuit, and the model of selecting for use is TWH9429;

VT1 is NPN transistor, and the model of selecting for use has 2SC8050,3DG8050,3DG12 etc.;

D1 is the transwitch diode, and the model of selecting for use is 1N4148;

Resistance uses RTX-1/8W type metalfilmresistor, the resistance 2.2K Ω of resistance R 1, and RP selects solid potentiometer for use, and its resistance is 330K Ω;

C1 selects the withstand voltage 16V aluminum hull electrochemical capacitor that is for use, and capacity is 47 μ F;

J is DC relay, and coil working voltage is 12V, and contact capacity is selected according to the control watt level;

HA is hummer, selects for use inside that audio producing circuit, high loudness hummer are arranged, and operating voltage is 12V.

Circuit production main points and circuit debugging

Oscillator coil L selects for use ￠ 0.68mm high strength enamelled wire flat around 6～7 circles at ￠ 5mm iron staff;

Antenna ATX selects the 60cm telescopic antenna for use, or is 320mm with bare copper wire, the length of ￠ 1.5～2mm;

Perhaps: select for use ￠ 2mm enameled wire loop to become ￠ 140～150mm open circles coil antenna, the opening part two ends of circular loop antenna are connected on Y pin and the YO pin of microwave sounding module I C1 respectively, directly replace oscillator coil L with the open circles loop antenna, can also exempt to connect simultaneously antenna ATX;

Human body can be by the resistance of regulator potentiometer RP near the scope of device, and the distance that requires to survey human body reaches 8～9m;

If do not need to control other devices, the DC relay J in the circuit can save, and transwitch diode D1 also should omit simultaneously, directly uses a 12V inside hummer of audio electronics circuit to be arranged as load.

Claims

1. a human body is near the monitoring alarm device, and it comprises 12V direct supply, microwave sounding circuit, signal identification and amplifying circuit, level power amplification and load circuit, it is characterized in that:

Described microwave sounding circuit is by microwave sounding module I C1, oscillator coil L and antenna ATX form, the model that microwave sounding module I C1 adopts is TWH9428, the Y pin of microwave sounding module I C1 meets an end and the antenna ATX of oscillator coil L, the YO pin of microwave sounding module I C1 connects the other end of oscillator coil L, the anodal VCC of the VDD pin connection circuit of microwave sounding module I C1, the B pin of microwave sounding module I C1 connects the positive pole of electrochemical capacitor C1, the G pin connection circuit ground GND of the negative pole of electrochemical capacitor C1 and microwave sounding module I C1, the O pin of microwave sounding module I C1 connect signal identification and amplifying circuit;

The model that integrated circuit (IC) 2 adopts in described signal identification and the amplifying circuit is TWH9429, the B pin of integrated circuit (IC) 2 connects the B pin of microwave sounding module I C1, the I pin of integrated circuit (IC) 2 connects the O pin of microwave sounding module I C1, the WO pin of integrated circuit (IC) 2 connects an end and the movable end thereof of potentiometer RP, the W pin of integrated circuit (IC) 2 connects the other end of potentiometer RP, the anodal VCC of the VDD pin connection circuit of integrated circuit (IC) 2, the G pin connection circuit ground GND of integrated circuit (IC) 2;

The base stage of NPN transistor VT1 connects the O pin of integrated circuit (IC) 2 in described level power amplification and the load circuit by resistance R 1, the collector of NPN transistor VT1 connects an end and the positive pole of transwitch diode D1 and the negative pole of hummer HA of DC relay J coil, the anodal VCC of the anodal connection circuit of the other end of DC relay J coil and transwitch diode D1 negative pole and hummer HA, the emitter connection circuit ground GND of NPN transistor VT1;

Described 12V dc power anode links to each other with circuit anode VCC, and the 12V dc power cathode links to each other with circuit ground GND.