CN2741053Y

CN2741053Y - Kinematic sensor with micro-power

Info

Publication number: CN2741053Y
Application number: CN 200420009845
Authority: CN
Inventors: 王秀芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-04
Filing date: 2004-11-04
Publication date: 2005-11-16
Anticipated expiration: 2014-11-04

Abstract

The utility model relates to a kinematic sensor with micro-power, comprising a low-frequency oscillator, a pulse oscillator, a first narrow pulse generator, a second narrow pulse generator, an ultra-broadband transmitting antenna, a first delay circuit, a second delay circuit, a receiving circuit, a differential amplifier, and a drive circuit. The receiving circuit further comprises a selection integrator and an ultra-broadband receiving antenna. The low-frequency oscillator, the pulse oscillator, the first narrow pulse generator, and the ultra-broadband transmitting antenna are orderly connected. The pulse oscillator, the first delay circuit, the second narrow pulse generator, the receiving circuit, the differential amplifier and the drive circuit are orderly connected. The selection integrator in the receiving circuit is respectively connected with the second narrow pulse generator, the ultra-broadband receiving antenna and the differential amplifier. The second delay circuit is connected with the drive circuit. The utility model, the kinematic sensor with micro-power, has strong penetration ability and good range resolution, the range setting can be realized, the anti-interference ability is strong, the excellent electromagnetic compatibility is provided, and the distance-adjustable function can be realized.

Description

The micropower motion sensor

Technical field

The utility model relates to a kind of micropower motion sensor, belongs to technical field of radio.

Background technology

Sensor commonly used has: infrared ray motion sensor, ultrasound wave motion sensor, microwave motion sensor etc.But the shortcoming of infrared ray motion sensor is to be blocked by other object easily and ineffective, the false-alarm probability height, and do not have the function of set a distance; The ultrasound wave motion sensor often is operated in the narrow beam state, and monitoring range is little, the installation requirement height, and all may cause false-alarm closely going up very little movable body, there is not the ability of set a distance yet.Microwave motion sensor mainly is a continuous wave induction type motion sensor, and this sensor is disturbed easily, the false-alarm probability height, and do not have the ability of set a distance.

The utility model content

[wanting the problem of technical solution]

Problem to be solved in the utility model just is: provide a kind of antijamming capability strong, and the penetration capacity height, false-alarm probability is low, and the set a distance ability is arranged, and distance can continuously adjustable micropower motion sensor.

[technical scheme]

For solving the problems of the technologies described above, the utility model adopts following scheme.

A kind of micropower motion sensor, contain LF oscillator, pulse oscillator, the first burst pulse generator, the second burst pulse generator, ultra broadband emitting antenna, first delay circuit, receiving circuit, differentiating amplifier, driving circuit, LF oscillator, pulse oscillator, the first burst pulse generator, ultra broadband emitting antenna link to each other successively, and pulse oscillator, first delay circuit, the second burst pulse generator, receiving circuit, differentiating amplifier, driving circuit link to each other successively.

In order to improve the antijamming capability of described sensor, also contain in the receiving circuit and select integrator and ultra broadband receiving antenna, select integrator to link to each other with burst pulse generator, ultra broadband receiving antenna, differentiating amplifier respectively.

In order not cause false-alarm, described sensor also contains second delay circuit, and this circuit links to each other with driving circuit.

Principle of work of the present utility model is: it is the pulse of order of megahertz that pulse oscillator produces repetition frequency, divides two-way output.One the tunnel gives the first burst pulse generator, produces the burst pulse of the microwatt magnitude power of nanometer or Subnano-class, is gone out by the antenna direct radiation; Delay circuit is given on another road, delay time has determined the operating distance of motion sensor, because: this road signal is to be used to produce range gate, the selective reception signal, the length of delay time has determined to transmit and the mistiming Δ t of received signal, and the pass of this mistiming and operating distance R is:

R＝cΔt/2。Postpone to give the second burst pulse generator behind the certain hour, produce the narrower burst pulse of pulse that produces than the first burst pulse generator, this pulse is given receiver as range gate the signal that enters receiver is carried out selective reception, radiation signal runs into reflected signal after the target is given receiver by the ultra broadband receiving antenna selection integrator, under the effect of range gate pulse, echoed signal is carried out integration selectively, integrating circuit can average accumulation to thousands of pulses, differentiating amplifier is given in its output, to fixed target, differentiating amplifier is exported a direct current signal, and this direct current signal is isolated, and does not just have signal to give driving circuit; To moving target, differentiating circuit just has signal output, driving circuit can driver under the signal effect of differentiating circuit output other equipment work, as facility switching, pilot lamp, loudspeaker, warning net etc.The signal that LF oscillator produces the sinusoidal signal paired pulses oscillator of several KHz carries out frequency modulation (PFM), and the radiation signal pulse repetition rate is changed.Because radiation signal is the carrierfree burst pulse, the signal spectrum width is several G hertz, so this motion sensor utilization is super-broadband tech.

[beneficial effect]

It is strong that the utility model micropower motion sensor has penetration capacity, and the range resolution height is realized set a distance, and antijamming capability is strong, has good Electro Magnetic Compatibility, can realize apart from adjustable function.

Description of drawings

Specify embodiment of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is a principle of work synoptic diagram of the present utility model;

Fig. 2 is a concrete enforcement circuit diagram of the present utility model;

1, LF oscillator; 2, pulse oscillator; 3, the first burst pulse generator; 4, the second burst pulse generator; 5, ultra broadband emitting antenna; 6, first delay circuit; 7, second delay circuit; 8, receiving circuit; 81, select integrator; 82 ultra broadband receiving antennas; 9, differentiating amplifier; 10, driving circuit.

Embodiment

Further describe embodiment of the present utility model below in conjunction with accompanying

drawing

1,2, but be not used for limiting scope of the present utility model.

A kind of micropower motion sensor, contain LF oscillator 1, pulse oscillator 2, the first burst pulse generator 3, the second burst pulse generator 4, ultra broadband emitting antenna 5, first delay circuit 6, second delay circuit 7, receiving circuit 8, differentiating amplifier 9, driving circuit 10, receiving circuit 8 further contains selects integrator 81, ultra broadband receiving antenna 82, LF oscillator 1, pulse oscillator 2, the first burst pulse generator 3, ultra broadband emitting antenna 5 links to each other successively, pulse oscillator 3, first delay circuit 6, the second burst pulse generator 4, receiving circuit 8, differentiating amplifier 9, driving circuit 10 links to each other successively, selection integrator 81 in the receiving circuit 8 respectively with the second burst pulse generator 4, ultra broadband receiving antenna 82 links to each other with differentiating amplifier 9, and second delay circuit 7 is connected with driving circuit 10.

LF oscillator 1 is by triode: Q101, Q102, Q103, resistance R 101, R102, R103, electric capacity: C101, C102, C103 forms, producing frequency is the low frequency signal of several KHz, by resistance R 104, capacitor C 104, give pulse oscillator, pulse oscillator 2 is by phase inverter: U101, U102, U103, resistance: R105, R106, capacitor C 105, diode D101 forms, the pulse signal that is used to produce frequency and is several megahertzes divides two-way output by phase inverter U104, one the tunnel gives the first burst pulse generator 3, the first burst pulse generator 3 is by phase inverter U105, U106, U107, resistance: R107, R108, R109, R110, R111, electric capacity: C107, C109, C110, C111, C112, diode D102, triode Q104 forms, the nanosecond or the subnanosecond level burst pulse that produce, giving emitting antenna 5 radiate, first delay circuit 6 is given on another road, first delay circuit 6 is by resistance R 112, capacitor C 106 is formed, be used for paired pulses and delay time, the pulse signal after the time-delay is given the second burst pulse generator, 4, the second burst pulse generators 4 by phase inverter: U108, U109, U110, resistance: R113, R114, R115, R116, R119, electric capacity: C108, C109, C113, C114, C115, C116, diode D103, inductance L 1, triode Q105 forms, the nanometer or the Subnano-class burst pulse that produce are given and are selected integrator 81, select to received signal and accumulate.

Target to transmit by receiving antenna 82 be that E2, E3 give and select integrator 81, select integrator by resistance: R117, R118, R120, R121, R122, R123, inductance: C118, C119, C120, C121, triode D104, D105 form, and are used for averaging to received signal accumulation.Differentiating amplifier 9 amplifies earlier, carries out differential again, and the signal behind the differential is amplified.Differentiating amplifier 9 is by amplifier: U111, U112, U113, resistance R 124, R125, R126, R127, R129, and electric capacity: C122, C123, C124, C125, C126, C127, C128 form, and its output signal is given driving circuit 10.Driving circuit 10 is by amplifier: U114, U115, U116, resistance: R130, R131, R132, R133, R134, R135, R136, R137, R138, R139, R140, R141, R142, capacitor C 129, triode D106, D107, D108, D109, D110, triode Q106 forms.Equipment such as driving circuit 10 can the driving arrangement switch, pilot lamp, loudspeaker, warning net can also come the design driven circuit as required.Because total system is a simulation ground circuit, system needs the regular hour to stablize when working at the beginning, therefore, in order not cause false-alarm, need delay circuit 6 to come the output of control Driver Circuit, delay circuit 6 is by phase inverter U117, resistance R 143, R144, R145, capacitor C 130, diode D111, triode Q107 forms.

Claims

1, a kind of micropower motion sensor, contain: LF oscillator (1), pulse oscillator (2), the first burst pulse generator (3), ultra broadband emitting antenna (5), receiving circuit (8), differentiating amplifier (9), driving circuit (10), LF oscillator (1), pulse oscillator (2), the first burst pulse generator (3), ultra broadband emitting antenna (5) link to each other successively, receiving circuit (8), differentiating amplifier (9), driving circuit (10) link to each other successively, it is characterized in that

Described sensor also contains first delay circuit (6), the second burst pulse generator (4), and pulse oscillator (2), first delay circuit (6), the second burst pulse generator (4), receiving circuit (8) link to each other successively,

Also contain in the described receiving circuit (8) and select integrator (8 1) and ultra broadband receiving antenna (82), select integrator (81) to link to each other with the second burst pulse generator (4), ultra broadband receiving antenna (82), differentiating amplifier (9) respectively.

According to the described sensor of claim 1, it is characterized in that 2, described sensor also contains second delay circuit (7), described second delay circuit (7) links to each other with driving circuit (10).