CN201886628U - Vehicle detecting system based on fiber grating technology - Google Patents
Vehicle detecting system based on fiber grating technology Download PDFInfo
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- CN201886628U CN201886628U CN2010201678368U CN201020167836U CN201886628U CN 201886628 U CN201886628 U CN 201886628U CN 2010201678368 U CN2010201678368 U CN 2010201678368U CN 201020167836 U CN201020167836 U CN 201020167836U CN 201886628 U CN201886628 U CN 201886628U
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Abstract
The utility model provides a vehicle detecting system based on a fiber grating technology, which mainly comprises a fiber grating sensor, a fiber grating demodulator and a data processing and analyzing module. The interior of the fiber grating stress sensor is paved at the surface of a road, so that the real-time detection of real-time traffic flow and vehicle load data can be realized based on the pressure change of the sensor. The system not only has the conventional function of monitoring traffic flow data but also has the function of detecting vehicle load in real time; compared with other traffic flow detecting technologic products, by adopting the fiber grating sensor, the vehicle detecting system has the characteristics of being long in service life, suitable for long-term detection, suitable for long-distance monitoring due to optical fiber transmission, fit with road detection, corrosion-resistant, electromagnetic interference-resistant and the like, and is suitable for various severe engineering environments; the system is simple in structure, and easy to install and embed; an optical fiber can support a plurality of gratings, so that the system is easy to realize distributed type automatic on-line detection; the system is insulated to electricity, thereby being suitable for high-voltage places; and the system can be used for electricity-free transmission, thereby being suitable for flammable and explosive places.
Description
Technical field
The utility model relates to a kind of vehicle detecting system based on Fiber Bragg Grating technology.
Background technology
Also do not possess the product that traffic datas such as the magnitude of traffic flow, average speed, vehicle load detect in the market simultaneously.
In traffic data testing products such as the magnitude of traffic flow, average speed, existing market mainly contains technology such as ground induction coil, digital video, microwave.These products can realize substantially average headway, the track in average overall travel speed, the track in the magnitude of traffic flow, the track in track average vehicle time interval, different vehicle type vehicle flowrate, lane occupancy, drive in the wrong direction, improper traffic events detection alarm such as parking.
Yet, brokenization of ground induction coil Technology Need ground, the civil engineering workload is bigger, and change, maintenance cost is higher; Microwave technology cost height; Accuracy of detection is subjected to weather, environment and factor affecting such as blocks; Digital video technology is weak on accuracy of detection; Its software complexity height in addition.
According to statistics, the road safety accident of China 70% is owing to the overload of vehicle vehicle overload causes, and 50% group's dead group particularly serious road traffic accident of wound property and overrun and overload have direct relation, and the vehicle overload overload is transported to people's lives and properties and has caused massive losses.In addition, the loss that the destruction of highway is caused because of the vehicle overload overload in highway in China every year is above 30,000,000,000 yuan.
Therefore, the invention fundamental purpose of this product, be that light grating technology with the advanced person is incorporated into during traffic data detects, realize the detection of traffic datas such as real-time traffic flow, average speed, vehicle and lane occupancy, simultaneously can also detect the vehicle overrun and overload, reduce the traffic safety accident, stop the breakoff phenomenon highway foundation implemented because of overrun and overload, thereby solve problems such as the harmful competition of the Highway Transportation Market that causes because of overrun and overload and serious accident to a certain extent.
The utility model content
The purpose of this utility model provides a kind of precision height, wagon flow detection system with low cost.In addition, product of the present invention also possesses vehicle load high Precision Detection function simultaneously when detecting the magnitude of traffic flow.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of vehicle detecting system based on Fiber Bragg Grating technology mainly is made up of fiber-optic grating sensor, fiber grating demodulation device, Data Management Analysis module three parts.To be laid on road surface in the optical fiber optical grating stress sensor, sensor-based pressure changes, thereby realizes the real-time detection of real-time traffic flow and vehicle load data.Fiber-optic grating sensor sends to the fiber grating demodulation device with induced signal, scans waveform by the fiber grating demodulation device then, and waveform signal is sent to the Data Management Analysis module.The fiber grating demodulation device adopts optical Fiber Method-Pa analyzer to carry out sweep waveform, and described Data Management Analysis module is realized by computer software.
Described fiber-optic grating sensor is selected fiber grating Prague (FBG, Fiber Bragg Grating) strain gauge for use.
The relevant Bragg grating sensor of production location on optical fiber at first, set up lane flow, vehicle pressure data model then, when the track sensor is subjected to wheel and rolls, near it sensing probe monitors the variation of stress immediately, thereby the data detection system on notice backstage is realized location, way wagon flow, vehicle-mounted data detection in real time.
The utility model also possesses the function that vehicle load detects in real time except that possessing conventional wagon flow data monitoring; Adopt fiber-optic grating sensor, than other wagon flow detection technique products, it is long to have a life-span, is fit to long-term the detection, adopts Optical Fiber Transmission, is fit to remote monitoring, and the highway that coincide detects, and has characteristics such as anticorrosive, anti-electromagnetic interference (EMI), suitable various abominable engineering-environments; The utility model is simple in structure, is easy to install, and buries underground; Article one, optical fiber can be supported a plurality of gratings, is easy to realize that distributed automatic on-line detects; To electrical isolation, be fit to the high voltage place; No electrical transmission is fit to inflammable and explosive place.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below.
Fig. 1 is a kind of fundamental diagram of the vehicle detecting system based on Fiber Bragg Grating technology.
Fig. 2 is the synoptic diagram of a car priority through two fiber-optic grating sensors;
Fig. 3 is the oscillogram of a car priority through two fiber-optic grating sensors.
Fig. 4 is the oscillogram of a car through a fiber-optic grating sensor.
Among the figure: 1, fiber-optic grating sensor; 2, fiber grating demodulation device; 3, Data Management Analysis module.
Embodiment
As shown in Figure 1, a kind of vehicle detecting system based on Fiber Bragg Grating technology mainly is made up of fiber-optic grating sensor 1, fiber grating demodulation device 2, Data Management Analysis module 3 three parts.To be laid on road surface in the fiber-optic grating sensor 1, sensor-based pressure changes, thereby realizes the real-time detection of real-time traffic flow and vehicle load data.Fiber-optic grating sensor 1 sends to fiber grating demodulation device 2 with induced signal, scans waveform by fiber grating demodulation device 2 then, and waveform signal is sent to Data Management Analysis module 3.Fiber grating demodulation device 2 adopts optical Fiber Method-Pa analyzers to carry out sweep waveform, and described Data Management Analysis module 3 is realized by computer software.
Described fiber-optic grating sensor is selected fiber grating Prague (FBG, Fiber Bragg Grating) strain gauge for use.
The relevant Bragg grating sensor of production location on optical fiber at first, set up lane flow, vehicle pressure data model then, when the track sensor is subjected to wheel and rolls, near it sensing probe monitors the variation of stress immediately, thereby the data detection system on notice backstage is realized location, way wagon flow, vehicle-mounted data detection in real time.
The utility model also possesses the function that vehicle load detects in real time except that possessing conventional wagon flow data monitoring; Adopt fiber-optic grating sensor, than other wagon flow detection technique products, it is long to have a life-span, is fit to long-term the detection, adopts Optical Fiber Transmission, is fit to remote monitoring, and the highway that coincide detects, and has characteristics such as anticorrosive, anti-electromagnetic interference (EMI), suitable various abominable engineering-environments; The utility model is simple in structure, is easy to install, and buries underground; Article one, optical fiber can be supported a plurality of gratings, is easy to realize that distributed automatic on-line detects; To electrical isolation, be fit to the high voltage place; No electrical transmission is fit to inflammable and explosive place.
Shown in Fig. 2-3, detect for wagon flow speed, as can be seen from the figure a vehicle was pressed the waveform of two sensors, by writing down for two WFS times, with sensor distance, can draw the speed of this vehicle.
As shown in Figure 4, detect, as can be seen from the figure with the oscillogram of vehicle through fiber grating dynamic weighing sensor for vehicle load.Process can draw the load of vehicle to the calculating of the Wave crest and wave trough of waveform.
Claims (3)
1. vehicle detecting system based on Fiber Bragg Grating technology, mainly form by fiber-optic grating sensor, fiber grating demodulation device, Data Management Analysis module three parts, it is characterized in that, fiber-optic grating sensor sends to the fiber grating demodulation device with induced signal, scan waveform by the fiber grating demodulation device then, waveform signal is sent to the Data Management Analysis module.
2. a kind of vehicle detecting system based on Fiber Bragg Grating technology according to claim 1 is characterized in that described fiber-optic grating sensor is selected fiber grating Prague strain gauge for use.
3. a kind of vehicle detecting system based on Fiber Bragg Grating technology according to claim 1 is characterized in that, the fiber grating demodulation device adopts optical Fiber Method-Pa analyzer to carry out sweep waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201678368U CN201886628U (en) | 2010-04-23 | 2010-04-23 | Vehicle detecting system based on fiber grating technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201678368U CN201886628U (en) | 2010-04-23 | 2010-04-23 | Vehicle detecting system based on fiber grating technology |
Publications (1)
| Publication Number | Publication Date |
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| CN201886628U true CN201886628U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201678368U Expired - Lifetime CN201886628U (en) | 2010-04-23 | 2010-04-23 | Vehicle detecting system based on fiber grating technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102521988A (en) * | 2011-12-02 | 2012-06-27 | 哈尔滨工业大学 | Fiber grating measuring system of vehicle running speeds and positions |
| CN108109395A (en) * | 2017-12-27 | 2018-06-01 | 北京信息科技大学 | A kind of vehicle-state detecting system based on fiber grating |
| CN108615368A (en) * | 2018-06-11 | 2018-10-02 | 东华大学 | A kind of traffic counting monitoring system based on 3D printing Yu FBG technologies |
| US10431077B2 (en) | 2015-10-30 | 2019-10-01 | Optasense Holdings Limited | Monitoring traffic flow |
| CN111856188A (en) * | 2020-07-28 | 2020-10-30 | 深圳职业技术学院 | New energy vehicle detection method and system based on Internet of things |
| CN113295248A (en) * | 2021-04-28 | 2021-08-24 | 广州铁路职业技术学院（广州铁路机械学校） | Method for monitoring automobile overload based on distributed optical fiber |
| CN114120641A (en) * | 2021-11-23 | 2022-03-01 | 武汉理工大学 | Method and system for detecting traffic flow information based on grating array sensing optical fiber network |
| CN114169370A (en) * | 2021-12-06 | 2022-03-11 | 武汉理工大学 | Method and system for constructing road space-time load pedigree based on grating array |
-
2010
- 2010-04-23 CN CN2010201678368U patent/CN201886628U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102521988A (en) * | 2011-12-02 | 2012-06-27 | 哈尔滨工业大学 | Fiber grating measuring system of vehicle running speeds and positions |
| CN102521988B (en) * | 2011-12-02 | 2014-04-23 | 哈尔滨工业大学 | Fiber grating measuring system of vehicle running speeds and positions |
| US10431077B2 (en) | 2015-10-30 | 2019-10-01 | Optasense Holdings Limited | Monitoring traffic flow |
| CN108109395A (en) * | 2017-12-27 | 2018-06-01 | 北京信息科技大学 | A kind of vehicle-state detecting system based on fiber grating |
| CN108615368A (en) * | 2018-06-11 | 2018-10-02 | 东华大学 | A kind of traffic counting monitoring system based on 3D printing Yu FBG technologies |
| CN111856188A (en) * | 2020-07-28 | 2020-10-30 | 深圳职业技术学院 | New energy vehicle detection method and system based on Internet of things |
| CN111856188B (en) * | 2020-07-28 | 2021-03-23 | 深圳职业技术学院 | New energy vehicle detection method and system based on Internet of things |
| CN113295248A (en) * | 2021-04-28 | 2021-08-24 | 广州铁路职业技术学院（广州铁路机械学校） | Method for monitoring automobile overload based on distributed optical fiber |
| CN114120641A (en) * | 2021-11-23 | 2022-03-01 | 武汉理工大学 | Method and system for detecting traffic flow information based on grating array sensing optical fiber network |
| CN114169370A (en) * | 2021-12-06 | 2022-03-11 | 武汉理工大学 | Method and system for constructing road space-time load pedigree based on grating array |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
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| CX01 | Expiry of patent term |