CN2079759U - Low-cost Doppler effect detection device - Google Patents
Low-cost Doppler effect detection device Download PDFInfo
- Publication number
- CN2079759U CN2079759U CN 90226205 CN90226205U CN2079759U CN 2079759 U CN2079759 U CN 2079759U CN 90226205 CN90226205 CN 90226205 CN 90226205 U CN90226205 U CN 90226205U CN 2079759 U CN2079759 U CN 2079759U
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- China
- Prior art keywords
- low
- circuit
- doppler effect
- resistance
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- 230000000694 effects Effects 0.000 title claims abstract description 8
- 238000001514 detection method Methods 0.000 title abstract 2
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract description 2
- 230000009131 signaling function Effects 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to a low-cost Doppler effect detection device for surveying moving object mainly comprises shell, circuit board, battery and antenna. The utility model discloses have the transmission electromagnetic wave, receive the back wave and convey alarm signal function, with its observable 30 ~ 100 square meter within range human body or object motion detect the target after transmit radio alarm signal promptly, transmission distance can reach more than 300 meters. It also has perspective partition wall, which can detect the moving object behind the obstacle. The device has simple structure, low cost and easy popularization, and can be used for anti-theft warning, safety warning and automatic control devices.
Description
The utility model is a kind of low-cost Doppler effect sniffer that is used to survey moving object.
The device that the principle of using Doppler effect is in the prior art surveyed moving object is of a great variety, as radar detector, microwave alarm or the like.But they are complex structure cost costliness mostly, is difficult to popularize, and particularly can't adopt for average family.
The purpose of this utility model is to design a kind of simple in structure, and is with low cost, is convenient to popularize and can be used for the moving object sniffer of family.So that constitute safe, the antitheft and automatic control system of various cheapnesss.
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is circuit theory diagrams of the present utility model.
The utility model is like this design, mainly formed by shell, circuit board, battery and antenna, it is characterized in that: whole circuit adopts low-voltage power supply, emission and reception circuit (A) in the circuit, signal amplification circuit (B), slow fall that signal triggers monostable circuit (C) and controlled audio oscillator circuit (D) is connected into annular successively, the antenna setting in the enclosure. The slow signal that falls triggers monostable circuit (C) by resistance R6One end is as the signal input, and one terminates at operational amplifier I2In-phase end, resistance R7Be connected across operational amplifier I2In-phase end and output between; Resistance R8Be connected on operational amplifier I2In-phase end and end of oppisite phase between, R8Can replace with diode resistance R9With capacitor C4And be connected in operational amplifier I2End of oppisite phase and ground between.
The utility model is because circuit design cleverly, makes simple in structure, with low cost and has launching electromagnetic wave, receives reflection wave and transmits three kinds of functions of alerting signal.With the human body (or object) in its detectable 30～100 square metres of scope motion, detect moving target after, transmitting radio alerting signal immediately, the transmission range of alerting signal can reach more than 300 meters.In this scope, just can receive loud alerting signal with a Daepori logical FM receiver or radio cassette player.And survey and to have see-through property, but partition wall, parting detect hidden in barrier moving object behind.The utility model power consumption economizes very much, and No. 5 batteries of two joints can normally use two wheat harvesting periods.The complete machine material cost is less than 6 yuan.
Below in conjunction with accompanying drawing the utility model is further described.
(electromagnetic frequency is by L and C by the outside launching electromagnetic wave of antenna TX with receiving circuit (A) in emission
1The resonant circuit decision that constitutes), sets up a stable high-frequency electrical field domain, also receive the electromagnetic wave that reflects simultaneously by antenna TX.When human body (or other object) motion is arranged in investigative range, wave frequency that reflects and amplitude all will change, and doppler transducer DPL detects low frequency signal of this variation back output.This signal send the slow low level voltage that signal triggering monostable circuit D produces certain width that falls after amplifying circuit B amplifies, low level voltage makes controlled audio oscillator circuit D work, and the anti-input end of launching with receiving circuit A of delivering to, outwards transmitting audio frequency alerting signal.
Can use external power source (comprising) by the CZ socket with powering after 220 volts of AC power step-downs, rectification, voltage stabilizing, the filtering.In addition, also can take out audio alarming signal, through processing and amplifying rear drive relay, so that control other electrical appliance, as electric light, electric bell, motor etc. by the CZ socket.As being concentrated, above-mentioned Alternating Current Power Supply part and signal processing make a kind of " additional controller " and the supporting use of the utility model can realize various control function.
The utility model is had many uses, and places it in home dwelling, unit orderly room, and the melon ground in warehouse, stock ground and rural area, fish pond etc. are located, and put a FM receiver at another place (as duty room etc.), can constitute guard against theft and alarm system.As mix aforesaid " additional controller " then more wide model of purposes, be placed on dangerous places such as ditch, hole, high pressure and can constitute the security alarm device; It is installed in by the stair aisle, can constitutes messenger from bright aisle lamp; It is installed in the porch of bank or other key departments, can constitutes " No admittance except on business " warning device; It is installed in the highway both sides can constitutes car automatic counter system or the like.
Accompanying drawing the 1, the 2nd, a kind of specific embodiment of the present utility model, the utility model are not limit by this example.1-battery cover among the figure, 2-5 battery (2 joint), the 3-battery spring, 4-controls socket, 5-circuit board, 6-antenna, 7-plastic casing, 8-conical plastics head.The fixing usefulness of 4 double as circuit boards wherein, 1 and 8 connect with 7 by screw thread, and 1 is free to rotate, can change battery easily.
(A)-emission and receiving circuit in the accompanying drawing 2, (B)-signal amplification circuit, (C)-the slow signal triggering monostable circuit that falls, (D)-controlled audio oscillator circuit.I wherein
1～I
3Use a four high guaily unit integrated package LM
324, resistance R
1, R
2, R
4Resistance be 10K Ω; R
3, R
6, R
7, R
8, R
10, R
11, R
12, R
13Be 100K Ω; R
5, R
9Be 3m Ω, capacitor C
1Be 15PF; C
3Be 47uF; C
3Be 47uF; C
4Be 10uF; C
2, C
5, C
6Be 0.01uF, inductance L forms around 4 circle tread flakings on the drill bit of φ 5mm with the enameled wire of φ 0.47mm.Doppler transducer DPL is that its inside of dedicated devices is made up of a transistor and several Resistor-Capacitor Unit.
Claims (3)
1, a kind of low-cost Doppler effect sniffer, mainly form by shell, circuit board, battery and antenna, it is characterized in that: entire circuit is by low-voltage power supply, its emission and receiving circuit (A), signal amplification circuit (B), slow fall signal triggering monostable circuit (C) and controlled audio oscillator circuit (D) is connected into annular successively, antenna is built-in.
2, low-cost Doppler effect sniffer according to claim 1, its feature also is: delay and fall signal triggering monostable circuit (C) by resistance R
6One termination operational amplifier I
2In-phase end, the other end is a signal input part, resistance R
7Be connected across operational amplifier I
2Between in-phase end and the output terminal, resistance R
8Be connected on operational amplifier I
2In-phase end and end of oppisite phase between, resistance R
9With capacitor C
4And be connected in operational amplifier I
2End of oppisite phase and ground between.
3, low-cost Doppler effect sniffer according to claim 2 is characterized in that: resistance R
8Can replace with diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90226205 CN2079759U (en) | 1990-12-21 | 1990-12-21 | Low-cost Doppler effect detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90226205 CN2079759U (en) | 1990-12-21 | 1990-12-21 | Low-cost Doppler effect detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2079759U true CN2079759U (en) | 1991-06-26 |
Family
ID=4903501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90226205 Pending CN2079759U (en) | 1990-12-21 | 1990-12-21 | Low-cost Doppler effect detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2079759U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487556A (en) * | 2013-10-07 | 2014-01-01 | 复旦大学 | Superconducting phase microscopy system |
| CN105093958A (en) * | 2015-08-31 | 2015-11-25 | 成都科创城科技有限公司 | Doppler voice acquisition apparatus of intelligent household central control system |
-
1990
- 1990-12-21 CN CN 90226205 patent/CN2079759U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487556A (en) * | 2013-10-07 | 2014-01-01 | 复旦大学 | Superconducting phase microscopy system |
| CN103487556B (en) * | 2013-10-07 | 2015-10-28 | 复旦大学 | A kind of superconducting phase microscopic system |
| CN105093958A (en) * | 2015-08-31 | 2015-11-25 | 成都科创城科技有限公司 | Doppler voice acquisition apparatus of intelligent household central control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |