CN2266164Y - Microwave periphery alarm - Google Patents

Abstract

The utility model relates to a microwave periphery alarm belonging to the field of electronic technology, which is concretely a far, mid and close distance and concealing type alarm device carrying out boundary warning by penetrating non-metal building and other tangible things. The utility model is characterized in that the transmission and the reception of the alarm are relatively divided into two large parts. The utility model can be widely used for public security, safety systems, secrecy systems, warehouses, military bases, dangerous exclusion areas, banks, cultural relic institutions, important party and government organizations, etc., to carry out periphery warning, has the advantages of safety, reliability and strong function, and is an ideal novel alarm.

Description

Microwave boundary alarm

The utility model microwave boundary alarm belongs to the category of electronic technology, particularly be a kind of far away, in, closely, corporeal things such as hidden, the penetrable non-metallic construction thing warning device that carries out border formula warning.

The prior art relevant with the utility model roughly has two classes: 1, Infrared intrusion detector.When the invador crossed over this alarm straight line line, chimes of doom promptly took place.The present invention not only has above-mentioned functions, lacks, can not pass through shortcomings such as visible object, disguised difference but also solved such alarm operating distance.2, microwave dobla formula alarm is the alarm of sending and receiving one.When the invador enters warning region (a certain space) with certain speed, promote alarm sound by the dobla frequency displacement of reflection wave, such alarm equipment alarm scope is a space, should not do the border warning; When target speed during, will not report to the police simultaneously not in its scope.

The purpose of this utility model is to solve the indeterminable problem of prior art, and provide can be far away, in, closely; Penetrate a kind of technical scheme of the microwave boundary alarm that carries out the border warning of nonmetal visible object, hidden.

The utility model microwave boundary alarm is characterized in that it being a kind ofly will transmit and receive the alarm that is divided into the two large divisions relatively, and radiating portion is divided into two fractions again, and receiving unit is divided into four fractions again, and total is made up of six fractions:

I, microwave signal generating means

Used microwave frequency is optional from 900MHz-12GHz a bit frequently to get final product, signal generator tube body effect tube, snowslide pipe etc., according to the characteristic of used pipe, the direct current that is provided with 5-15V is at the pipe two ends, the BJ-100 waveguide centre of simultaneously pipe being packed into, an end (λ _g/ 4) locate short circuit, end open circuit,

II, emitter

Adopt directional antenna, optional electromagnetic horn, the parabola antenna used is connected this antenna input port BJ-100 waveguide with the open end of I,

III, receiving trap

Adopt antenna identical with emitting antenna, receiving antenna is output as the BJ-100 waveguide and is connected with BJ-100 waveguide type wave detector IV,

IV, detecting circuit

The microwave detector diode 2DV8A BJ-100 waveguide central authorities of packing into are made detection usefulness, and input port links to each other with IIIBJ-100 output, and the 2DV8A two ends are detection and export, should be connected with the V amplifying circuit,

V, amplifying circuit

When being continuous wave, then being equipped with certain peripheral circuit with the integrated amplification piece of 7650 chopper-zero-stabilized types after the detection and realizing that this amplification has high sensitivity;

When being square wave or sine wave modulation, then amplify with the OP07 integrated package, after connect LC frequency-selecting (or 741 integrated packages are joined the external circuit frequency-selecting), amplify again after the frequency-selecting, amplified signal is through a series diode, exportable direct current signal behind an electric capacity in parallel, the resistance,

VI, identification and alarm sound circuit

This circuit mainly amplifies A by the two poles of the earth ₁, A ₂Form with charge-discharge circuit, triode T and buzzer siren FM, components and parts are joined by institute R ₁-R ₆, diode D ₁-D ₃And capacitor C etc., resistance R ₁And R ₂Series connection back one termination V _Cc, an end ground connection is from variable resistor R ₂The last adjustable voltage input A that divides ₁Positive input terminal, A ₁Negative input end is supplied with by the output of higher level's amplifier; A ₁Output divides two-way: a route light emitting diode D ₃And resistance R ₃To ground; Another route D ₁To A ₂Positive input; D ₁The back also meets C to ground, again and meet R ₄To ground, R ₅And R ₆Series connection back one termination V _Cc, an end ground connection, R ₆On voltage input A ₂Negative pole, A ₂Output is after D ₂To the base stage of triode T, the T collector is to V _Cc, FM is to ground for T emitter serial connection.

When Vin reduces, A ₁Work, i.e. discharge after the C charging, A ₂Work, T work, FM rings.Behind the C discharge off, A ₂, T, FM all quit work.Discharge (sound) time can be by C, R ₄Size determine.

The direct current signal of amplifier input is kept this circuit and is in off position.The input direct current signal diminishes when the people invades, and breaks off position, and identification circuit work is also exported a three ten-day period of hot season DC voltage, promotes alarm sound.

The utility model microwave boundary alarm has following advantage:

1, effect (warning) distance can be several meters, tens of meter does not wait to 100-200 rice.

2, make two-way emission as emitting antenna, then distance can be further far away or broken line (as the right angle) circumference carry out segmentation and report to the police.

3, can penetrate wall, corridor mouth, building door, enclosure wall etc. are guarded against.

4, disguised strong.R-T unit all can be placed in the existing or special nonmetal cells such as buildings, closed chamber or decorative architecture.

5, anti-destructive is strong.When power supply or other any circuit are cut off, when receive-transmit system is moved, all will send chimes of doom.

The utility model can be used for public security, security system, secrecy system, warehouse, place of military importance, dangerous exclusion area, bank, historical relic unit, important Party and government offices etc. and does the circumference warning; When crossing over border such as corridor that warning line maybe needs to guard against, gate, window, enclosure wall as the people, can send and continue more than 10 second chimes of doom.The bright expression of green light people is on warning line simultaneously, and green light goes out and represents that the people has left warning line.

Description of drawings;

Accompanying drawing 1 is the alarm structured flowchart.Number in the figure I is a microwave generator; II, III are respectively emission, receiving antenna; IV is the microwave detection; V is an amplifying circuit; VI is identification and alarm sound circuit.

Accompanying drawing 2 is identification and alarm sound circuit.Number in the figure A ₁Be amplifier 1; A ₂Be amplifier 2; T is 3DG6; Vcc gets+9V; R ₁=100K; R ₂=20K; R ₃=1.1K; C=33 μ F; R ₄=56K; R ₅=100K; R ₆=5K; FM can match various police whistle sounds; D ₁, D ₂Can select general diode for use; D ₃Be light emitting diode.

Most preferred embodiment:

Frequency of utilization f is at the x wave band, about output power 100mW.

I: microwave generator adopts bulk-effect diode external dc feed circuit, and oscillator signal is exported by the BJ-100 rectangular waveguide.

II: adopt the electromagnetism pyramid loudspeaker, link to each other with the output of I with ring flange.

III: receive and adopt the electromagnetic horn identical with II.

IV: receive the signal that comes by loudspeaker and link to each other with x wave band square wave conduction wave detector by ring flange.

V: wave detector output direct current signal is given at the corresponding levels the amplification.Amplify the integrated amplification piece of the 7650 chopper-zero-stabilized types of employing, be equipped with certain external circuit and realize.

VI: amplify output signal and give identification at the corresponding levels and alarm sound circuit Vin end.The normal conditions corresponding levels are kept by this signal, A ₁Amplifying signal is not worked for back grade, and the signal that III receives when the people crosses over reduces, and causes IV, V outputs at different levels all to reduce, and Vin also reduces, at this moment A ₁Amplifying signal, back level work, D ₃Shinny, C charging, A ₂Amplifying signal, T work, FM has sound.After the invador strides across, A ₁Quit work D ₃Go out, but A ₂Still keep work by the voltage on the C, FM continues that the sound is arranged, when C passes through R ₄Discharge, when voltage is reduced to certain value, A ₂Quit work, sound stops.The sustainable several seconds of the sound sound, this was by R to tens of seconds ₄Size is determined.

Annotate: receive, emitting antenna II, III be during with little parabola antenna, can further increase operating distance.

Claims (1)

1, a kind of microwave boundary alarm, it is characterized in that it being a kind ofly will transmit and receive the alarm that is divided into the two large divisions relatively, its radiating portion is made up of microwave signal generating means and emitter two fractions, its receiving unit is made up of receiving trap, detecting circuit, amplifying circuit and identification and alarm sound circuit four fractions, and total is made up of six fractions:

I, microwave signal generating means

Used microwave frequency can be chosen wantonly from 900MHz-12GHz a bit and frequently get final product, signal generator tube body effect tube, snowslide pipe etc., according to the characteristic of used pipe, the direct current that is provided with 5-15V is at the pipe two ends, the BJ-100 waveguide centre of simultaneously pipe being packed into, an end λ _gThe short circuit of/4 places, end open circuit,

II, emitter

Adopt directional antenna, optional electromagnetic horn, the parabola antenna used is connected this antenna input port BJ-100 waveguide with the open end of I,

III, receiving trap

Adopt antenna identical with emitting antenna, receiving antenna is output as the BJ-100 waveguide and is connected with BJ-100 waveguide type wave detector,

IV, detecting circuit

The microwave detector diode 2DV8A BJ-100 waveguide central authorities of packing into are made detection usefulness, and input port links to each other with IIIBJ-100 output, and the 2DV8A two ends are detection and export and should be connected with the V amplifying circuit,

V, amplifying circuit

When being continuous wave, then being equipped with certain peripheral circuit with the integrated amplification piece of 7650 chopper-zero-stabilized types after the detection realizes, when being square wave or sine wave modulation, then amplify with the OP07 integrated package, after connect the LC frequency-selecting or 741 integrated packages are joined the external circuit frequency-selecting, amplify again after the frequency-selecting, amplified signal is through a series diode, exportable direct current signal behind an electric capacity in parallel, the resistance

VI, identification and alarm sound circuit

Amplify A by the two poles of the earth ₁, A ₂Form with charge-discharge circuit, triode T and buzzer siren FM, institute's orchestration spare has R ₁-R ₆, diode D ₁-D ₃And capacitor C etc., resistance R ₁And R ₂Series connection back one termination V _Cc, an end ground connection is from variable resistor R ₂The last adjustable voltage input A that divides ₁Positive input terminal, A ₁Negative input end is supplied with by the output of higher level's amplifier; A ₁Output divides two-way: a route light emitting diode D ₃And resistance R ₃To ground; Another route D ₁To A ₂Positive input, D ₁The back also meets C to ground, again and meet R ₄To ground, R ₅And R ₆Series connection back one termination V _Cc, an end ground connection, R ₆On voltage input A ₂Negative pole, A ₂Output is after D ₂To the base stage of triode T, the T collector is to V _Cc, FM is to ground for T emitter serial connection.