CN1093263C - Microwave detection technique of moving object - Google Patents
Microwave detection technique of moving object Download PDFInfo
- Publication number
- CN1093263C CN1093263C CN 96117313 CN96117313A CN1093263C CN 1093263 C CN1093263 C CN 1093263C CN 96117313 CN96117313 CN 96117313 CN 96117313 A CN96117313 A CN 96117313A CN 1093263 C CN1093263 C CN 1093263C
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- antenna
- electrically connected
- moving
- amplifier
- collector
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- Geophysics And Detection Of Objects (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention relates to a moving-object microwave detecting technique which can work under broad voltage of 2 to 12 volts for omnibearing or directional detection. In a moving-object microwave detecting device, an iron arc-shaped electromagnetic wave shielding case GZ is added on the lower end of an omnibearing detecting antenna TX of a circuit formed by electrical connection of an antenna, an oscillator, an amplifier and an identifying detector, and accordingly, electromagnetic waves are directionally transmitted to a monitoring area by forming a sector surface to detect the existence of moving objects within a distance from 2 to 7m for a power supply of 2 to 12 volts.
Description
The present invention relates to a kind of microwave technology that moving target exists that detects, particularly can oriented detection and the electronic circuit of wide voltage power supply.
At present, existing moving-target microwave pick-up unit is electrically connected by antenna, microwave oscillator, amplifier, identification detector and forms.By antenna the microwave oscillation electromagnetic wave is launched the position in full to the space, form the electromagnetic field of certain limit, when there are objects moving then and there, the reflection wave that changes receives frequency, the changes in amplitude that makes oscillator by antenna, the oscillator coil potential fluctuation amplifies, differentiates and detect voltage pulse output through amplifier, the trigger action circuit is measured moving target and is existed.But because of being difficult for laying middle position in a side, the part electromagnetic field is outdoor when indoor comprehensive detection, has the people to walk about in the outdoor electromagnetic field scope or there is the toy activity flooring, makes the pick-up unit output signal.General moving-target microwave pick-up unit can not have people movable and ground toy or the outdoor people's of having activity in the divided chamber, and signal easily makes the mistake.
The purpose of this invention is to provide a kind of microwave detection technique of moving object, it not only can exist by comprehensive detection moving target, and can oriented detection, avoid when indoor detection has the people movable that ground toy or the outdoor people of having are movable to produce unwanted rub-out signal.
The object of the present invention is achieved like this: be electrically connected at antenna, oscillator, amplifier, identification detector, one electromagnetic wave cage is set, make the vertical noncontact of the copper straight antenna of the long 80mm of φ 2mm place central authorities in 120 ° of arc ferrous metal of bore 100mm radian cage, the electromagnetic wave of isolated antennas end portion emission, electromagnetic wave is sector and is transmitted in the guarded region, pass through orientation adjustment, do not need ground, test section certain altitude and outdoorly isolated because of electromagnetic wave, do not detect moving target and exist, reach the oriented detection purpose.Remove cage, comprehensive detection.
Owing to adopt such scheme, can the also orientable detection moving target of comprehensive detection, the detection of ground certain altitude and outdoor section is isolated, avoid producing unwanted moving target signal, the electromagnetic wave of antenna emission only adopts cage partly to isolate, and is simple in structure.Because can lie prostrate the wide power voltage power supply by 2-12, so easy to use.
Accompanying drawing is circuit theory diagrams of the present invention.
With reference to accompanying drawing, TX is the copper straight antenna of the long 80mm of φ 2mm, and GZ is 120 ° of arc cages of bore 100m radian, BG
1Be ft1000M
HZBFR90 type ultrahigh frequency triode and telefault L, resonant capacitance C
2Form the microwave self-excited oscillator, BG
2, BG
3, BG
4Be three grades of direct-coupled amplifiers that 9014 type triodes are formed, IC
1, IC
2Window signal identification detector for low-power consumption 2-18V wide power LM358 type dual operational amplifier composition.
BG
1Oscillator is with 400-600M
HZTo spatial emission, according to Doppler effect, the reflection wave of moving target is received by TX and makes oscillator produce frequency displacement the microwave oscillation electromagnetic wave of frequency by antenna TX, and frequency and changes in amplitude, L end A point potential fluctuation pass through C
1The fluctuation voltage signal is added to amplifier BG
2Amplify, through direct-coupled amplifier BG
3, BG
4Amplify back emitter-base bandgap grading output, pass through C
3Be added to resistance R
11, R
12The voltage divider of forming makes signal swing up and down at 1/2 supply voltage, adds IC then
1, IC
2Signal identification detector 2.5 input ends are when signal is higher than IC
16 ends, 7 end output HIGH voltage pulses, signal is lower than IC
2When the pulse of 3 ends, L end output HIGH voltage, no moving target signal, 2.5 ends are that mid-point voltage is lower than 6 ends and is higher than 3 ends, and 1.7 ends are 0 current potential non-output signal.Because BG
1, BG
2Biasing is respectively by R
2, R
4Adopt stability shunt voltage negative feedback type preferably, BG
2, BG
3, BG
4Form the stronger direct-coupled amplifiers of amplifying power for three grades, operate as normal in the 2-12V wide-voltage range, maximum moving target monitoring is apart from TX: 7M when 2M, 12V during power supply 2V.Potentiometer W adjusts sensitivity.
Claims (2)
1, a kind of moving-target microwave detection line, antenna, oscillator, amplifier, identification detector are electrically connected, and it is characterized in that: antenna places in the arc cage, biasing resistor R
2Two ends and oscillating tube BG
1Base stage b, collector C the two poles of the earth are electrically connected telefault L two ends and oscillating tube BG
1Collector C, coupling capacitance C
1Positive electrical connects, coupling capacitance C
1Negative pole and amplifier tube BG
2Base stage is electrically connected, biasing resistor R4 two ends and amplifier tube GB
2Base stage b, collector C the two poles of the earth are electrically connected amplifier tube BG
2Collector C and amplifier tube BG
3Base stage b, amplifier tube BG
3Collector C and amplifier tube BG
4Base stage b is electrically connected.
2, moving-target microwave detection line according to claim 1 is characterized in that: antenna places central authorities in the ferrous metal arc cage, vertical, insulation mutually, and antenna is electrically connected with lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117313 CN1093263C (en) | 1996-11-29 | 1996-11-29 | Microwave detection technique of moving object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117313 CN1093263C (en) | 1996-11-29 | 1996-11-29 | Microwave detection technique of moving object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1167923A CN1167923A (en) | 1997-12-17 |
| CN1093263C true CN1093263C (en) | 2002-10-23 |
Family
ID=5124199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96117313 Expired - Fee Related CN1093263C (en) | 1996-11-29 | 1996-11-29 | Microwave detection technique of moving object |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093263C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242485B (en) * | 2014-09-25 | 2016-03-16 | 江南大学 | The wireless power supply of ammeter |
| CN107886610A (en) * | 2017-11-29 | 2018-04-06 | 郑州天迈科技股份有限公司 | Slot machine unlocking control system based on zigbee radio network techniques |
-
1996
- 1996-11-29 CN CN 96117313 patent/CN1093263C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1167923A (en) | 1997-12-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |