CN104658260A - Automatic vehicle detection device - Google Patents
Automatic vehicle detection device Download PDFInfo
- Publication number
- CN104658260A CN104658260A CN201310593157.5A CN201310593157A CN104658260A CN 104658260 A CN104658260 A CN 104658260A CN 201310593157 A CN201310593157 A CN 201310593157A CN 104658260 A CN104658260 A CN 104658260A
- Authority
- CN
- China
- Prior art keywords
- vehicle detection
- detection device
- vehicle
- detection apparatus
- intelligent camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
Abstract
The invention discloses an automatic vehicle detection device which comprises two ground sensing coils embedded underground, and a vehicle detection device part in signal connection with the ground sensing coils, wherein the vehicle detection device part is in signal connection with an intelligent camera. The device has the benefits that the vehicle detection device part is connected with the intelligent camera, so that an overspeed vehicle can be shot in real time and an evidence can be obtained; the whole process does not require manual operation and is quick and convenient; a filter can filter clutters; the sensitivity of the vehicle detection device part is improved; and a lightning arrester improves a security function of the vehicle detection device part.
Description
Technical field
The present invention relates to inductance detection device, particularly relate to vehicle automatic detection device.
Background technology
Along with highway communication is fast-developing, city bayonet socket plays very important role in public security, in order to obtain hit-and-run on highway, the information such as to drive over the speed limit, reducing the traffic hazard and violation phenomenon that cause owing to driving over the speed limit, by using vehicle detection apparatus to carry out detect lines car speed, being convenient to police's law enforcement, existing vehicle detection apparatus can not carry out captured in real-time to overspeed violation vehicle, for later investigation and evidence collection work brings certain difficulty.
Summary of the invention
The technical problem to be solved in the present invention is that existing vehicle detection apparatus can not carry out captured in real-time to vehicles peccancy, provides a kind of vehicle automatic detection device of energy captured in real-time overspeed violation vehicle for this reason.
Technical scheme of the present invention is: vehicle automatic detection device, and it comprises the vehicle detection apparatus being embedded in underground two ground induction coils and being connected with ground induction coil signal, and described vehicle detection apparatus is connected with intelligent camera signal.
Vehicle detection apparatus described in such scheme comprises LC oscillatory circuit, operational amplifier, filtering circuit, shaping circuit and the single-chip microcomputer that signal successively connects, described LC oscillatory circuit is connected with ground induction coil signal, and described single-chip microcomputer is connected with intelligent camera signal.
The further improvement of such scheme is provided with lightning protection device between described vehicle detection apparatus and intelligent camera.
The invention has the beneficial effects as follows and be connected with intelligent camera on vehicle detection apparatus, captured in real-time evidence obtaining can be carried out to overspeed violation vehicle, whole process is without the need to manual operation, convenient and swift, wave filter can filter out noise jamming, improve the sensitivity of vehicle detection apparatus, lightning protection device makes the safety protection function of vehicle detection apparatus be improved.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the present invention includes the vehicle detection apparatus being embedded in underground two ground induction coils and being connected with ground induction coil signal, described vehicle detection apparatus is connected with intelligent camera signal.
Signal to ground induction coil by vehicle detection apparatus to form oscillating current and form magnetic field, when vehicle is by two groups of ground induction coils, can there is respective change in the magnetic flux of ground induction coil, at this moment vehicle detection apparatus can receive two pulse signals, two pulse signal interval time T
T=S/V
Distance wherein between S: two groups of ground induction coils (can with ruler measurement out)
V: the speed of a motor vehicle (as: 20km/h, 80 km/h, 100 km/h, 200 km/h etc.) vehicle being detected.
Vehicle detection apparatus will to detect on road surface that the information of traffick is sent to intelligent camera and carries out other process by RS232 agreement.
Can also lightning protection device being provided with between vehicle detection apparatus and intelligent camera, breaking vehicle detection apparatus and intelligent camera for avoiding induced lightening.
Vehicle detection apparatus comprises LC oscillatory circuit, operational amplifier, filtering circuit, shaping circuit and the single-chip microcomputer that signal successively connects, and described LC oscillatory circuit is connected with ground induction coil signal, and described single-chip microcomputer is connected with intelligent camera signal.Lightning protection device is located between single-chip microcomputer and intelligent camera.
LC oscillatory circuit is colpitts feedback sinusoidal oscillator, contain amplifying circuit, frequency selection network, feedback network and nonlinear elements transistor, and amplifying circuit normally can work.Circuit just can meet amplitude perturbations and produce sine-wave oscillation.Amplifier is the important component part in data acquisition, and its major requirement is high-gain, high input impedance and high cmrr.The each side characteristic of three amplifier data amplifiers all compares better.And the related resistors in circuit must adopt high precision resistance, and want exact matching, otherwise will input/output relation be affected, also can reduce the common-mode rejection ratio of circuit.
According to oscillatory circuit characteristic and requirement, filtering circuit adopts band pass filter circuit.Band pass filter circuit simply can be interpreted as that low-pass filter and Hi-pass filter are in series.In practical circuit, the single integrated transporting discharging of normal employing forms voltage-controlled power supply second order bandwidth-limited circuit.
Shaping circuit can adopt phase inverter shaping, adopts zero-crossing comparator shaping.Adopt zero-crossing comparator to input sine wave shaping herein, rising edge and all more satisfactory square-wave signal of negative edge can be obtained.
This product is based on High Reliability Design; adopt high-performance microprocessor, high stability oscillatory circuit and channel sequence scanning technique; have frequency self-adaption and complete environment following function, coil input end transformer isolation, gas discharge protection of pipe prevents external interference.Detecting device adopts direct current supply, and mainboard LED indicates passage output state and malfunction, and DIP switch selectable selects output level and edge mode, automatic sensitivity promote, channel sensitivity rank, has reset button, exports as Phototube Coupling.Powerful, excellent performance, stable, be widely used in monitoring and control recording system and the systems such as the monitoring of traffic public security bayonet and Signalized control such as the speed of a motor vehicle mensuration of the special speed-limit road section such as highway, city inner ring, fast circle highway, bridge, tunnel.This device has good repeatability and consistance, effectively can reduce the volume of system, and product weight is light, is convenient to process and assemble, easily produces in batches.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (3)
1. vehicle automatic detection device, it is characterized in that it comprises the vehicle detection apparatus being embedded in underground two ground induction coils and being connected with ground induction coil signal, described vehicle detection apparatus is connected with intelligent camera signal.
2. vehicle automatic detection device as claimed in claim 1, it is characterized in that LC oscillatory circuit, operational amplifier, filtering circuit, shaping circuit and single-chip microcomputer that described vehicle detection apparatus comprises signal successively and connects, described LC oscillatory circuit is connected with ground induction coil signal, and described single-chip microcomputer is connected with intelligent camera signal.
3. vehicle automatic detection device as claimed in claim 2, is characterized in that being provided with lightning protection device between described single-chip microcomputer and intelligent camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593157.5A CN104658260A (en) | 2013-11-23 | 2013-11-23 | Automatic vehicle detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593157.5A CN104658260A (en) | 2013-11-23 | 2013-11-23 | Automatic vehicle detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104658260A true CN104658260A (en) | 2015-05-27 |
Family
ID=53249322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310593157.5A Pending CN104658260A (en) | 2013-11-23 | 2013-11-23 | Automatic vehicle detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104658260A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652482A (en) * | 2017-01-25 | 2017-05-10 | 安徽达尔智能控制系统股份有限公司 | Intelligent snapshot system |
| CN109091755A (en) * | 2018-09-21 | 2018-12-28 | 上海华聆人工耳医疗科技有限公司 | A kind of artificial cochlea's special-purpose radio-frequency signal supervisory instrument and method |
| WO2019084828A1 (en) * | 2017-10-31 | 2019-05-09 | 深圳市小猫信息技术有限公司 | Vehicle detection device and parking management system |
-
2013
- 2013-11-23 CN CN201310593157.5A patent/CN104658260A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652482A (en) * | 2017-01-25 | 2017-05-10 | 安徽达尔智能控制系统股份有限公司 | Intelligent snapshot system |
| WO2019084828A1 (en) * | 2017-10-31 | 2019-05-09 | 深圳市小猫信息技术有限公司 | Vehicle detection device and parking management system |
| CN109091755A (en) * | 2018-09-21 | 2018-12-28 | 上海华聆人工耳医疗科技有限公司 | A kind of artificial cochlea's special-purpose radio-frequency signal supervisory instrument and method |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |