CN208477734U - A kind of traffic data collection terminal based on earth induction - Google Patents
A kind of traffic data collection terminal based on earth induction Download PDFInfo
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- CN208477734U CN208477734U CN201820858114.3U CN201820858114U CN208477734U CN 208477734 U CN208477734 U CN 208477734U CN 201820858114 U CN201820858114 U CN 201820858114U CN 208477734 U CN208477734 U CN 208477734U
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Abstract
The traffic data collection terminal based on earth induction that the utility model discloses a kind of, including earth induction unit, detection unit, data transmission unit and control unit, earth induction unit is to traffic data into real-time detection；Detection unit is connect with earth induction unit, the magnetic strength information that real-time detection earth induction unit generates；Control unit is connect with detection unit, receives magnetic strength information, and make a response；Data transmission unit is connect with control unit, and the magnetic strength information that control unit responds is transmitted to data server；Earth induction unit includes geomagnetic induction coil and high-frequency current generation unit, and high-frequency current generation unit controls high frequency alternating current by geomagnetic induction coil for generating high frequency alternating current, and geomagnetic induction coil generates the electromagnetic field of alternation under high frequency alternating current effect.The utility model can be acquired traffic data by earth induction, high to vehicle data collection precision, can effectively identify all kinds of vehicles, provide convenience for intellectual traffic control.
Description
Technical field
The utility model relates to technical field of control over intelligent traffic more particularly to a kind of traffic datas based on earth induction
Acquisition terminal.
Background technique
Current highway industry generallys use bayonet video detection system in traffic data collection.Bayonet video detection
System by setting up high-definition camera unit on a highway, to capture vehicle traveling information, vehicle traveling information include speed,
Traffic data, license plate number etc. pass through cable-network transmission to backstage hard disk video recorder for capturing to image or video.Bayonet view
Frequency detection system has the disadvantage in that traffic data detection accuracy is low in terms of counting traffic data, and is influenced to compare by weather
Larger, the sleet greasy weather often detects failure；Without the function that gives warning in advance in terms of traffic data；Detection range is small, can only detect certain
The traffic data of any cannot arbitrarily shift one's position because of need of work；Construction is complicated, the hardware and software input cost of system
It is high.
Therefore, the existing technology needs to be improved and developed.
Utility model content
In view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of traffic based on earth induction
Data collection station, it is intended to which Transportation Data Collection Terminal is at high cost in the prior art for solution, the low problem of detection accuracy.
A kind of technical solution of the utility model is as follows:
A kind of traffic data collection terminal based on earth induction, including the transmission of earth induction unit, detection unit, data
Unit and control unit,
The earth induction unit is to traffic data into real-time detection；The detection unit and the earth induction unit connect
It connects, the magnetic strength information that real-time detection earth induction unit generates；Described control unit is connect with the detection unit, described in reception
Magnetic strength information, and make a response；Data transmission unit is connect with described control unit, the magnetic strength that described control unit is responded
Information is transmitted to data server；
The earth induction unit includes geomagnetic induction coil and high-frequency current generation unit, the geomagnetic induction coil and high-frequency current
Generation unit connection, the high-frequency current generation unit control the high frequency alternating current for generating high frequency alternating current
By geomagnetic induction coil, the geomagnetic induction coil generates the electromagnetic field of alternation under high frequency alternating current effect.
Preferably, the magnetic strength information is the frequency by the high-frequency current in geomagnetic induction coil.
Preferably, the detection unit is frequency tester, and the frequency for detecting the high-frequency current in geomagnetic induction coil becomes
Change.
Preferably, the data transmission unit is WIFI module or bluetooth module.
Preferably, described control unit is single-chip microcontroller.
Preferably, the single-chip microcontroller uses AT89C51 series monolithic.
Preferably, the traffic data collection terminal further includes display screen, and the display screen is connect with described control unit,
Traffic data for display control unit response.
Preferably, the display screen uses LCD1602 liquid crystal display.
The utility model has the advantages that the utility model provides a kind of traffic data collection terminal based on earth induction, pass through earth magnetism
Induction is to obtain traffic data, is intellectual traffic control to more accurately obtain the information such as vehicle flowrate, the vehicle ratio of road
It provides convenience.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the structural schematic diagram of Transportation Data Collection Terminal preferred embodiment of the utility model based on earth induction.
Specific embodiment
To keep the purpose of this utility model, technical solution and effect clearer, clear, below to the utility model into one
Step is described in detail.It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit
The utility model.
Please refer to Fig. 1.As shown in Figure 1, the utility model implementation discloses a kind of traffic data based on earth induction and adopts
Collecting system includes traffic data collection terminal 1 and data server 2, traffic data collection terminal 1 include earth induction unit 10,
Detection unit 20, control unit 30 and data transmission unit 40,
Earth induction unit 10 is to traffic data into real-time detection；Detection unit 20 is connect with earth induction unit 10, real
When detection earth induction unit 10 generate magnetic strength information；Control unit 30 is connect with detection unit 20, receives magnetic strength information, and
It makes a response；Data transmission unit 40 is connect with control unit 30, and the magnetic strength information that control unit 30 responds is transmitted to data
Server 2；
Data server 2 is used for the magnetic strength information that storage control unit 30 responds.
Specifically, by being mounted on the earth induction unit of underground, real-time detection traffic data.Traffic in the present embodiment
Data are the information such as road traffic flow, vehicle ratio.Earth induction unit is when detecting information of vehicles, it may occur that corresponding
Magnetic strength information change, detection unit is for after detecting magnetic strength information change, the magnetic strength information change that will test to be sent to control
Unit processed, control unit respond the magnetic strength information received, and the magnetic strength information of response is passed through data transmission unit
It is transferred to data server 2.Data server can according to collected traffic data, to road traffic flow, vehicle ratio into
Row judgement, provides conveniently for traffic data analyzing.
Preferably, earth induction unit 10 includes geomagnetic induction coil 100 and high-frequency current generation unit 200, geomagnetic induction coil 100
It is connected with high-frequency current generation unit 200, high-frequency current generation unit 200 controls high frequency for generating high frequency alternating current
Alternating current generates the electromagnetic field of alternation by geomagnetic induction coil 100, geomagnetic induction coil 100 under high frequency alternating current effect.It is preferred that
Ground, magnetic strength information are the frequency by the high-frequency current in geomagnetic induction coil.
Specifically, geomagnetic induction coil 100 uses loop coil.The principle of detection are as follows: generated by high-frequency current generation unit
High frequency alternating current by geomagnetic induction coil, the electromagnetic field of alternation is generated around geomagnetic induction coil, when vehicle is above geomagnetic induction coil
When passing through, generally it is made of ferromagnetic material car body.On the one hand, the intervention of ferromagnetic car body makes the magnetic permeability of coil surrounding space
It changes, increases the inductance of coil；On the other hand, the electromagnetic field of alternation makes to generate eddy current effect in car body, makes coil
Inductance reduce.When the driving frequency of wagon detector is 20KHz~100KHz, eddy current effect should play leading factor.It leads
The variation of magnetic rate and inductance all makes the frequency of oscillation of coil change, and vehicle passes through during the entire process of coil, by coil
The body shapes and car body of top and the relative position of coil are continually changing, to make the high-frequency current in loop coil
Frequency change.
Preferably, traffic data collection terminal 1 further includes power module (not shown), power module respectively with high frequency
Current generating unit 200, data transmission unit 40, control unit 30 connect, and are high-frequency current generation unit 200, data transmission
Unit 40, control unit 30 provide voltage required for work.
High-frequency current generation unit 200 for generating high-frequency current, high-frequency current be relative to power frequency 50HZ alternating current and
The electric current of speech.Specifically, high-frequency current can be the electric current of 400HZ or more.For example, the carrier current in the signal of communication is exactly
High-frequency current.Therefore high-frequency current generation unit 200 includes converter unit, and converter unit is used for the power frequency for exporting power module
Direct current is obtained after the rectified filtering of electric current, then obtains high-frequency alternating current through oscillating circuit.Oscillating circuit is the prior art, herein
It repeats no more.
Preferably, detection unit 20 is frequency tester, and the frequency for detecting the high-frequency current in geomagnetic induction coil changes.
When the frequency for detecting high-frequency current changes, then explanation currently has vehicle process, and the frequency variation that will acquire is sent to control
Unit.For example, GPC-6 fashioned iron string frequency determinator can be used in frequency tester.
Preferably, data transmission unit 40 is WIFI module or bluetooth module.Further, data transmission unit may be used also
To be network broadband, it is connect by network broadband with data server.The vehicle base that data server is fed back by control unit
This signal, three data prediction carried out to vehicle baseband signal, feature extraction, pattern-recognition key links are completed, each
In a key link, signal extraction and interpolation algorithm, data compression method will be utilized, at morphological feature and numerical characteristics calculating
Reason, correctly identifies the information such as classification, the basic status of vehicle.Detector is layouted Optimal Configuration Method principle: main with figure
Layouting for detector is optimized by method, by the way that transportation network is abstracted obtained abstract graph, it is established that detector is optimal
The mathematical model layouted.The point for solving the mode and obtaining the optimal scale layouted and layouting.
Preferably, control unit 30 is single-chip microcontroller.Further, single-chip microcontroller uses AT89C51 series monolithic.
AT89C51 series monolithic is the high-performance CMOS 8-bit microprocessor with 4K byte FLASH memory, and at low cost.
Preferably, traffic data collection terminal 1 further includes display screen (not shown), and display screen and control unit connect
It connects, the traffic data for display control unit response.The response data of vehicle can be shown using display screen.Display screen uses
LCD1602 liquid crystal display.The data of response can be the shape or quantity of vehicle.
It should be understood that the application of the utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
It says, it can be modified or changed according to the above description, and all these modifications and variations all should belong to the appended power of the utility model
The protection scope that benefit requires.
Claims (8)
1. a kind of traffic data collection terminal based on earth induction, which is characterized in that single including earth induction unit, detection
Member, data transmission unit and control unit,
The earth induction unit is to traffic data into real-time detection；The detection unit is connect with the earth induction unit,
The magnetic strength information that real-time detection earth induction unit generates；Described control unit is connect with the detection unit, receives the magnetic
Feel information, and makes a response；Data transmission unit is connect with described control unit, and the magnetic strength of described control unit response is believed
Breath is transmitted to data server；
The earth induction unit includes geomagnetic induction coil and high-frequency current generation unit, and the geomagnetic induction coil and high-frequency current generate
Unit connection, the high-frequency current generation unit control the high frequency alternating current and pass through for generating high frequency alternating current
Geomagnetic induction coil, the geomagnetic induction coil generate the electromagnetic field of alternation under high frequency alternating current effect.
2. the traffic data collection terminal according to claim 1 based on earth induction, which is characterized in that the magnetic strength letter
Breath is the frequency for passing through the high-frequency current in geomagnetic induction coil.
3. the traffic data collection terminal according to claim 2 based on earth induction, which is characterized in that the detection is single
Member is frequency tester, and the frequency for detecting the high-frequency current in geomagnetic induction coil changes.
4. the traffic data collection terminal according to claim 3 based on earth induction, which is characterized in that the data pass
Defeated unit is WIFI module or bluetooth module.
5. the traffic data collection terminal according to claim 1 based on earth induction, which is characterized in that the control is single
Member is single-chip microcontroller.
6. the traffic data collection terminal according to claim 5 based on earth induction, which is characterized in that the single-chip microcontroller
Using AT89C51 series monolithic.
7. the traffic data collection terminal according to claim 1 based on earth induction, which is characterized in that further include display
Screen, the display screen are connect with described control unit, the traffic data for display control unit response.
8. the traffic data collection terminal according to claim 7 based on earth induction, which is characterized in that the display screen
Using LCD1602 liquid crystal display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820858114.3U CN208477734U (en) | 2018-06-04 | 2018-06-04 | A kind of traffic data collection terminal based on earth induction |
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| CN201820858114.3U CN208477734U (en) | 2018-06-04 | 2018-06-04 | A kind of traffic data collection terminal based on earth induction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379032A (en) * | 2019-07-24 | 2019-10-25 | 安徽锦星信息技术有限公司 | Non-contact attendance system based on earth induction |
| CN110517512A (en) * | 2019-08-07 | 2019-11-29 | 深圳市骏思凯奇科技发展有限公司 | A kind of intelligence control system of traffic intersection |
| CN110930694A (en) * | 2019-11-06 | 2020-03-27 | 浙江大华技术股份有限公司 | Traffic detector layout scheme generation method, computer system, and storage medium |
| CN111275977A (en) * | 2019-08-23 | 2020-06-12 | 上海烜融信息技术服务有限公司 | System and method for monitoring red light running of vehicle |
-
2018
- 2018-06-04 CN CN201820858114.3U patent/CN208477734U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379032A (en) * | 2019-07-24 | 2019-10-25 | 安徽锦星信息技术有限公司 | Non-contact attendance system based on earth induction |
| CN110517512A (en) * | 2019-08-07 | 2019-11-29 | 深圳市骏思凯奇科技发展有限公司 | A kind of intelligence control system of traffic intersection |
| CN111275977A (en) * | 2019-08-23 | 2020-06-12 | 上海烜融信息技术服务有限公司 | System and method for monitoring red light running of vehicle |
| CN110930694A (en) * | 2019-11-06 | 2020-03-27 | 浙江大华技术股份有限公司 | Traffic detector layout scheme generation method, computer system, and storage medium |
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