CN205940584U - Vehicle's detecting system - Google Patents
Vehicle's detecting system Download PDFInfo
- Publication number
- CN205940584U CN205940584U CN201620957300.3U CN201620957300U CN205940584U CN 205940584 U CN205940584 U CN 205940584U CN 201620957300 U CN201620957300 U CN 201620957300U CN 205940584 U CN205940584 U CN 205940584U
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- China
- Prior art keywords
- optical cable
- wavelength
- demodulation module
- fiber
- wavelength demodulation
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Abstract
The utility model discloses a vehicle's detecting system, vehicle's detecting system includes wavelength demodulation module, measured module, first optical cable and second optical cable. The wavelength demodulation module is used for sending incident light, receive reflected light simultaneously, first optical cable with the second optical cable is used for the transmission the incident light with the reverberation, measured module is used for turning into fiber grating's dependent variable center wavelength's offset, the wavelength demodulation module still is used for acquireing center wavelength's offset is with the basis the offset detects corresponding vehicle information. The utility model discloses according to center wavelength's offset, the position distance of offset production and the skew time difference acquisition vehicle's that the offset produced relevant information. Compare in current vehicle detection technique, the utility model provides a technical scheme has advantages such as measurement accuracy height, reaction sensitivity height and stable performance.
Description
Technical field
The utility model is related to detection technique field, more particularly, to a kind of detecting system of the vehicles.
Background technology
In substantial amounts of infrastructure, the particularly industry such as highway, railway, subway, bridge tunnel is numerous, without one
Cover the health monitoring technique of complete science to help attendant to analyze, to judge potential safety hazard, then safety problem
It is very severe.Therefore in order to ensure structural safety, to bridge, tunnel, dam, steel building, mine, side slope with
And other large scale civil engineerings are also all necessary to implement health monitoring.However, existing vehicle testing techniques certainty of measurement is low, property
Can be poor.
Utility model content
For solving the above problems, the utility model provides a kind of detecting system of the vehicles, and part solves prior art
Middle vehicle testing techniques certainty of measurement is low, poor performance problem.
For this reason, the utility model provide a kind of detecting system of the vehicles, including Wavelength demodulation module, measurement module,
First optical cable and the second optical cable, described measurement module includes measured zone, described measured zone is provided with fiber grating and passes
Sensor matrix, one end of described first optical cable is connected with described Wavelength demodulation module, and the other end of described first optical cable is in series with
A part of fiber-optic grating sensor, one end of described second optical cable is connected with described Wavelength demodulation module, described second optical cable
The other end is in series with another part fiber-optic grating sensor；
Described Wavelength demodulation module is used for sending incident light, receives reflected light simultaneously；
Described first optical cable and described second optical cable are used for transmitting described incident light and described reflected light；
Described measurement module is used for the dependent variable of fiber grating is converted into the side-play amount of centre wavelength；
Described Wavelength demodulation module is additionally operable to obtain the side-play amount of described centre wavelength, to detect phase according to described side-play amount
The vehicle information answered.
Optionally, described Wavelength demodulation module includes interconnective light source submodule and information processing submodule, described
Information processing submodule is connected with described first optical cable and described second optical cable respectively；
Described light source submodule is used for sending incident light；
Described information process submodule be used for receiving reflected light, described reflected light is processed simultaneously with obtain described in
The side-play amount of cardiac wave length.
Optionally, described vehicle information is the speed of the vehicles；
Described Wavelength demodulation module is used for obtaining the poor and described optical fiber grating sensing of shift time of described centre wavelength
Predeterminable range between device；
Described Wavelength demodulation module is additionally operable to obtain described traffic work according to the poor and described predeterminable range of described shift time
The speed of tool.
Optionally, described vehicle information is the wheelbase of the vehicles；
Described Wavelength demodulation module is used for obtaining the positional distance of the fiber-optic grating sensor that centre wavelength shifts；
Described Wavelength demodulation module is additionally operable to obtain the wheelbase of the described vehicles according to described positional distance.
Optionally, described vehicle information is the speed of the vehicles；
Described Wavelength demodulation module is used for obtaining the wavelength shift of the fiber-optic grating sensor that centre wavelength shifts；
Described Wavelength demodulation module is additionally operable to obtain the speed of the described vehicles according to described wavelength shift.
The utility model has following beneficial effects：The technical scheme that the utility model provides passes through fiber-optic grating sensor
The shift time obtaining the side-play amount, the positional distance of side-play amount generation and side-play amount generation of centre wavelength is poor, further according to institute
State the relevant information that side-play amount, described positional distance and described shift time difference obtain the vehicles.Compared to existing friendship
Logical tool detection technology, the technical scheme that the utility model provides has certainty of measurement height, reaction sensitivity is high and performance is steady
The advantages of determine.
Brief description
A kind of structural representation of the detecting system of vehicles that Fig. 1 provides for the utility model embodiment one；
Fig. 2 is the structural representation of Wavelength demodulation module shown in Fig. 1；
Specific embodiment
For making those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
It is described in detail with the detecting system of the vehicles of new offer.
Embodiment one
A kind of structural representation of the detecting system of vehicles that Fig. 1 provides for the utility model embodiment one.As Fig. 1
Shown, the detecting system of the described vehicles includes Wavelength demodulation module 1, measurement module 5, the first optical cable 2 and the second optical cable
3, described measurement module 5 includes measured zone 4, and described measured zone 4 is provided with fiber-optic grating sensor matrix 6.Described
One end of one optical cable 2 is connected with described Wavelength demodulation module 1, and the other end of described first optical cable 2 is connected some optical fiber light
Gate sensor, the first character of the numbering of this part fiber grating sensor is A.One end of described second optical cable 3 with described
Wavelength demodulation module 1 connects, and the other end of described second optical cable 3 is in series with another part fiber-optic grating sensor, this partly light
The first character of the numbering of fiber grating sensor is B.Optionally, described first optical cable 2 and described second optical cable 3 are commonly single
Mould optical cable, described Wavelength demodulation module 1 is used for the centre wavelength reflecting is demodulated, and measures the side-play amount of wavelength.
The general single mode optical cable connecting different channel interfaces is used for transmitting measurement signal.The measured zone 4 being built-in with fiber grating can
To measure the strain value of diverse location, Distribution value and time of measuring are measured by fiber grating, may finally draw and treat measuring car
Speed, the relevant information such as car weight and wheelbase.
The present embodiment utilizes the measuring principle of fiber grating as follows：In stretching or compression fiber grating, or change temperature
Deng other physical quantitys, the period L changing fiber grating and effective refractive index n can be reachedeff, thus reaching change fiber grating
Reflected wavelength lambdaBPurpose.The variable quantity of the variable quantity of the centre wavelength of fiber grating and strain, temperature is linear, root
According to above-mentioned characteristic, fiber grating can be fabricated to multiple sensing such as strain, temperature, pressure, acceleration, displacement by the present embodiment
Device.Fiber Bragg grating signal processor is used for the wavelength value of each fiber-optic grating sensor of Real-time Collection, by the ripple of grating sensor
The size of long variable quantity extrapolates the change size of respective physical amount (for example, temperature, stress etc.).By the way, this reality
Apply the purpose that example is achieved that physical quantity sensing detection.The technical scheme that the present embodiment provides utilizes fiber grating pair temperature, answers
Become sensitive characteristic, by the different design of sensor and encapsulation so that fiber grating produces the physical quantity of axial deformation,
To be measured by fiber-optic grating sensor, it can measure various physical parameters：Temperature, strain, pressure, displacement, acceleration
Degree etc..
In the present embodiment, described Wavelength demodulation module 1 is used for sending incident light, receives reflected light, described first light simultaneously
Cable 2 and described second optical cable 3 are used for transmitting described incident light and described reflected light, and described measurement module 5 is used for fiber grating
Dependent variable be converted into the side-play amount of centre wavelength, described Wavelength demodulation module 1 is additionally operable to obtain the skew of described centre wavelength
Amount, to detect corresponding vehicle information according to described side-play amount.The technical scheme that the present embodiment provides passes through fiber grating
The positional distance that sensor obtains the side-play amount of centre wavelength, side-play amount produces and the shift time of side-play amount generation are poor, then
Obtain the relevant information of the vehicles according to described side-play amount, described positional distance and described shift time difference.Compared to existing
Some vehicles detection techniques, the technical scheme that the present embodiment provides has certainty of measurement height, reaction sensitivity height and property
The advantages of can stablize.
Referring to Fig. 1, Wavelength demodulation module 1 is connected with two channel interfaces, and two different collections of channel interface correspondence are led to
Road, two acquisition interface are connected with two single mode fiber cables respectively, and on two general single mode optical cables, all string has fiber-optic grating sensor,
Constituted and be built-in with optical fiber light by the different cablings of two general single mode optical cables and its position of the fiber-optic grating sensor gone here and there
The measurement module 5 of grid.Compared to traditional vehicle testing techniques, the fiber grating sensing technology that the present embodiment provides is a kind of new
The optical sensing of type, it is linear within the specific limits with temperature, stress and so on physical quantities using the wavelength of fiber grating
To make various kinds of sensors.Fiber-optic grating sensor have electromagnetism interference, in high precision, high sensitivity, waterproof, anticorrosive, resistance to
The features such as long property is long, and fiber-optic grating sensor small volume, lightweight, it is easy to laying and installs, therefore the sensor is planted
Enter and in monitoring object, there is not coupling, the impact such as the performance on monitoring object and mechanics parameter is less.Fiber grating passes
Sensor is suitable for large area, distance, the comprehensive real time on-line monitoring of multiple types, is state-of-the-art structure monitoring skill at present
Art.
Fig. 2 is the structural representation of Wavelength demodulation module shown in Fig. 1.As shown in Fig. 2 described Wavelength demodulation module 1 includes
Interconnective light source submodule 11 and information processing submodule 12, described information process submodule 12 respectively with described first light
Cable 2 and described second optical cable 3 connect.Described light source submodule 11 is used for sending incident light, and described information processes submodule 12 and uses
In receiving reflected light, described reflected light is processed to obtain the side-play amount of described centre wavelength simultaneously.Optionally, described light
Source submodule 11 is wideband light source, and the wide spectrum optical that wideband light source sends can be propagated by two passages respectively, wide spectrum optical warp
Cross two different general single mode optical cables and reach the measured zone 4 being built-in with fiber grating, measurement module 5 monitoring fiber grating is anti-
It is emitted back towards the wavelength shift coming.
Referring to Fig. 1 and Fig. 2, described Wavelength demodulation module 1 is used for launching wideband light source, receives general single mode optical cable anti-simultaneously
It is emitted back towards the different skew wavelength coming, demodulate corresponding measurement physical quantity by the side-play amount of centre wavelength.Described Wavelength demodulation
Module 1 records the time that the positional information of different fiber-optic grating sensors, wavelength shift information and offset information occur, thus
Obtain corresponding information of vehicles.Described first optical cable 2 is the general single mode optical cable that string has fiber grating, for transmitting light energy,
The fiber grating skew long demodulation module of wavelength reflection echo 1 by reflection.Described second optical cable 3 is that string has the common of fiber grating
Single mode fiber cable, for transmitting light energy, by the fiber grating skew long demodulation module of wavelength reflection echo 1 of reflection.
The present embodiment records strain Distribution value and its temporal information using fiber grating matrix 6, thus obtaining driving vehicle
Relevant information.When not having vehicle through out-of-date, the centre wavelength value reflecting immobilizes, initial for initial fiber grating
Value.When having vehicle through out-of-date, the centre wavelength of the fiber-optic grating sensor of portion can enter line displacement, by fixed intervals away from
From the shift time difference of centre wavelength of two fiber-optic grating sensors can draw the travel speed of vehicle, occurred by centre wavelength
The positional distance of the fiber-optic grating sensor of skew can draw the wheelbase of driving vehicle, the optical fiber light being shifted by centre wavelength
The wavelength shift of gate sensor can draw the speed of driving vehicle.
Referring to Fig. 2, the wide spectrum optical that light source submodule 11 sends is propagated by two passages respectively, and wide spectrum optical is through two
Different general single mode optical cables reaches the measured zone 4 being built-in with fiber grating.Information processing submodule 12 receives by common list
The different skew wavelength that mould optical cable reflects, demodulate corresponding measurement physical quantity by the side-play amount of centre wavelength.Information
Process that submodule 12 records the positional information of different fiber-optic grating sensors, when wavelength shift information and offset information occur
Between, thus obtaining corresponding information of vehicles.
The present embodiment provides a kind of detecting system of the vehicles, including Wavelength demodulation module, measurement module, the first optical cable
And second optical cable, described measurement module includes measured zone, described measured zone is provided with fiber-optic grating sensor matrix,
One end of described first optical cable is connected with described Wavelength demodulation module, and the other end of described first optical cable is connected some optical fiber
Grating sensor, one end of described second optical cable is connected with described Wavelength demodulation module, the other end series connection of described second optical cable
There is another part fiber-optic grating sensor；Described Wavelength demodulation module is used for sending incident light, receives reflected light simultaneously；Described
One optical cable and described second optical cable are used for transmitting described incident light and described reflected light；Described measurement module is used for fiber grating
Dependent variable be converted into the side-play amount of centre wavelength；Described Wavelength demodulation module is additionally operable to obtain the skew of described centre wavelength
Amount, to detect corresponding vehicle information according to described side-play amount.The technical scheme that the present embodiment provides passes through fiber grating
The positional distance that sensor obtains the side-play amount of centre wavelength, side-play amount produces and the shift time of side-play amount generation are poor, then
Obtain the relevant information of the vehicles according to described side-play amount, described positional distance and described shift time difference.Compared to existing
Some vehicles detection techniques, the technical scheme that the present embodiment provides has certainty of measurement height, reaction sensitivity height and property
The advantages of can stablize.
Claims (5)
1. a kind of detecting system of the vehicles it is characterised in that include Wavelength demodulation module, measurement module, the first optical cable with
And second optical cable, described measurement module includes measured zone, described measured zone is provided with fiber-optic grating sensor matrix, institute
The one end stating the first optical cable is connected with described Wavelength demodulation module, and the other end of described first optical cable is connected some optical fiber light
Gate sensor, one end of described second optical cable is connected with described Wavelength demodulation module, and the other end of described second optical cable is in series with
Another part fiber-optic grating sensor；
Described Wavelength demodulation module is used for sending incident light, receives reflected light simultaneously；
Described first optical cable and described second optical cable are used for transmitting described incident light and described reflected light；
Described measurement module is used for the dependent variable of fiber grating is converted into the side-play amount of centre wavelength；
Described Wavelength demodulation module is additionally operable to obtain the side-play amount of described centre wavelength, with corresponding according to the detection of described side-play amount
Vehicle information.
2. the detecting system of the vehicles according to claim 1 is it is characterised in that described Wavelength demodulation module includes phase
The light source submodule connecting and information processing submodule, described information process submodule respectively with described first optical cable and described
Second optical cable connects；
Described light source submodule is used for sending incident light；
Described information processes submodule and is used for receiving reflected light, described reflected light is processed to obtain described middle cardiac wave simultaneously
Long side-play amount.
3. the detecting system of the vehicles according to claim 1 is it is characterised in that described vehicle information is traffic
The speed of instrument；
Described Wavelength demodulation module be used for obtain described centre wavelength the poor and described fiber-optic grating sensor of shift time it
Between predeterminable range；
Described Wavelength demodulation module is additionally operable to obtain the described vehicles according to the poor and described predeterminable range of described shift time
Speed.
4. the detecting system of the vehicles according to claim 1 is it is characterised in that described vehicle information is traffic
The wheelbase of instrument；
Described Wavelength demodulation module is used for obtaining the positional distance of the fiber-optic grating sensor that centre wavelength shifts；
Described Wavelength demodulation module is additionally operable to obtain the wheelbase of the described vehicles according to described positional distance.
5. the detecting system of the vehicles according to claim 1 is it is characterised in that described vehicle information is traffic
The speed of instrument；
Described Wavelength demodulation module is used for obtaining the wavelength shift of the fiber-optic grating sensor that centre wavelength shifts；
Described Wavelength demodulation module is additionally operable to obtain the speed of the described vehicles according to described wavelength shift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957300.3U CN205940584U (en) | 2016-08-26 | 2016-08-26 | Vehicle's detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957300.3U CN205940584U (en) | 2016-08-26 | 2016-08-26 | Vehicle's detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205940584U true CN205940584U (en) | 2017-02-08 |
Family
ID=57952993
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620957300.3U Expired - Fee Related CN205940584U (en) | 2016-08-26 | 2016-08-26 | Vehicle's detecting system |
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| CN (1) | CN205940584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382949A (en) * | 2016-08-26 | 2017-02-08 | 山西省交通科学研究院 | Vehicle detection system and method for detecting vehicle |
-
2016
- 2016-08-26 CN CN201620957300.3U patent/CN205940584U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382949A (en) * | 2016-08-26 | 2017-02-08 | 山西省交通科学研究院 | Vehicle detection system and method for detecting vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20190826 |