CN2924496Y - Dynamic weighing device for axle load of fiber grating vehicle - Google Patents
Dynamic weighing device for axle load of fiber grating vehicle Download PDFInfo
- Publication number
- CN2924496Y CN2924496Y CN 200620042854 CN200620042854U CN2924496Y CN 2924496 Y CN2924496 Y CN 2924496Y CN 200620042854 CN200620042854 CN 200620042854 CN 200620042854 U CN200620042854 U CN 200620042854U CN 2924496 Y CN2924496 Y CN 2924496Y
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- grating
- fiber
- optical fiber
- valve block
- hydraulic valve
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- 239000000835 fiber Substances 0.000 title claims abstract description 31
- 238000005303 weighing Methods 0.000 title abstract description 14
- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000004593 Epoxy Substances 0.000 claims abstract description 5
- 229920000728 polyester Polymers 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000531116 Blitum bonus-henricus Species 0.000 description 1
- 235000008645 Chenopodium bonus henricus Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
A fiber grating vehicle axle load dynamic weighing device comprises: the output end of the laser light source is connected with the first end of the optical fiber coupler, the third end of the optical fiber coupler is connected with the fiber bragg grating wavelength demodulation module, and the fiber bragg grating wavelength demodulation module, the photoelectric conversion module, the data acquisition equipment and the industrial personal computer are sequentially connected in series and arranged in a shell; the fiber bragg grating pressure sensing head is formed by fixing optical fibers at two ends of a sensing grating on a metal elastic membrane by epoxy polyester, the metal elastic membrane is adhered to the hydraulic valve block, and the hydraulic valve block is communicated with the hydraulic hose; and the second end of the optical fiber coupler is connected with the optical fiber of the sensing grating. The utility model has the advantages of the reliability is high, with low costs, measuring speed is fast and easy remote monitoring.
Description
Technical field
The utility model relates to fiber grating, particularly a kind of optical fiber raster dynamic weigher for vehicle axle weight.Be mainly used in the overweight and vehicle weight metering charging system of vehicle that administers.
Background technology
In recent years, China's road transport vehicle overload overload phenomenon is very general, and in serious area, all there is overrun and overload behavior in various degree in nearly all goods stock.Vehicle overload overload transportation to traffic safety, transport market, vehicle production order and road and bridge infrastructure caused very big harm." over-limited transport vehicle travel highway administration regulation " implemented in Ministry of Communications issue on April 1st, 2000, clearly defined the boundary that transfinites, and the yardstick of unified standard is provided for the law enforcement agency that is correlated with; The relevant policies rules that appearance is reformed the expenses standard and the collection mode of toll and road maintainance cost will be fermented jointly by Ministry of Communications and National Development and Reform Committee in nearly 1-2, in order to ensure the scientific and effective enforcement of above-mentioned policies and regulations, the primary problem that solves of highway traffic control department is exactly how to obtain vehicle load information accurately and reliably.Road vehicle is weighed and is mainly contained two kinds at present: static weighing and dynamic weighing, static weighing is that the administration of highways personnel allow doubtful overweight vehicle enter fixing weigh station to weigh, this is the car load the most accurate method of weighing, but this method testing efficiency is low, easily cause traffic jam, and because static weighing mechanism is huge, noticeable, overloaded vehicle is often taked to detour or mode such as unloading is in advance hidden inspection; Dynamic weighing is that the sensing mechanism that vehicle is installed in the process of cruising on the road surface is measured the pressure of tire road pavement and calculated corresponding static weight, though the measuring accuracy of this method does not reach the precision of static weighing fully, but because higher testing efficiency and disguise more and more is subjected to the attention of highway traffic control department.Relevant measured result has also confirmed the superiority of dynamic weighing, and on same road, fixedly the overloaded vehicle measured of weigh station only is 0.5%, and the overloaded vehicle that adopts dynamic weighing to measure is 30%.
Because dynamic weighing has excellent properties and vast market prospect, the U.S. has just begun relevant research as far back as the fifties, and developed countries such as France, Germany, Britain have also dropped into the great amount of manpower financial resources and research and develop thereafter.China starts late to the dynamic weighing of vehicle, start from the initial stage eighties, research is Chongqing highway research institute than morning, at present domestic have tame relevant unit more than 20 to be engaged in this respect research approximately, because the domestic system that develops all adopts the conventional dynamic weighing technology, so all there is intrinsic defective: test response is slow, measuring accuracy low and sensing mechanism is huge etc.Existing commercialization sensor mainly comprises: condenser type, bended plate type, piezoelectric type etc., and wherein the technology of piezoelectric type is better relatively, and also there are corresponding series of products the home market.Because piezoelectric sensor is relatively more responsive to electromagnetic interference (EMI), so under abominable road conditions, reliability greatly reduces.
Summary of the invention
The utility model proposes a kind of optical fiber raster dynamic weigher for vehicle axle weight at controlling technical need super and that the weight metering charging aspect shows especially day by day, this device should have the reliability height, with low cost, be easy to advantage such as remote supervisory.
Technical solution of the present utility model is as follows:
A kind of optical fiber raster dynamic weigher for vehicle axle weight comprises:
First end of the output termination fiber coupler of one LASER Light Source, this LASER Light Source, the 3rd terminated optical fiber grating wavelength demodulation module of this fiber coupler is connected in series photoelectric conversion module, data acquisition equipment and industrial computer more successively and is arranged in the casing; Form fluid pressure type pressure sensing mechanism by fiber bragg grating pressure sensing head, hydraulic valve block and hydraulic hose array, described fiber bragg grating pressure sensing head is fixed on the optical fiber at sensing grating two ends on the one metallic elastic diaphragm with epoxy polyester and constitutes, described metallic elastic diaphragm sticks on the described hydraulic valve block, and described hydraulic valve block and hydraulic hose are connected; The optical fiber of the described sensing grating of second termination of described fiber coupler.
Principle of work of the present utility model is:
The hydraulic gear that adopts the hydraulic hose array to form replaces traditional mechanical mechanism, roll the hydraulic hose of hydraulic gear in the process of moving when vehicle, pressure in the hydraulic cavities raises immediately, because the pressure values of each point equates in the airtight hydraulic cavities, so can pressure values be changed into the drift of optic fiber grating wavelength correspondence by optical fiber optical grating pressure sensor, separate regulating mechanism by optic fiber grating wavelength again wavelength shift is demodulated to light intensity value, be converted into magnitude of voltage and corresponding digital quantity again, by calculating, can obtain the heavy information of axle of corresponding pressure values and corresponding vehicle at last.
The utlity model has outstanding advantage:
1, the pressure of hydraulic hose diverse location stressed back generation can both be delivered to same point, and this mode has solved traditional mechanical mechanism and rolled the inherent shortcoming that the sensing head different parts causes error because of vehicle.
2, utilize fiber grating as the pressure sensing head, this pressure sensing head can be easy to realize remote monitoring simultaneously at abominable working site steady operation.
3, hydraulic unit and Fiber Bragg Grating technology maturation, stable performance, cheap, be easy to apply.
4, whole system needn't excavated pavement in the process of installing, and road pavement plays maximum protection, and construction is simple, and repair and maintenance is convenient.
Description of drawings
Fig. 1 is the structural drawing of the utility model optical fiber raster dynamic weigher for vehicle axle weight
Fig. 2 is fiber bragg grating pressure sensing header structure figure in the utility model device
Among the figure: 1-LASER Light Source, 2-fiber coupler, 3-fiber bragg grating pressure sensing head, 4-fluid pressure type pressure sensing mechanism, 5-optic fiber grating wavelength demodulation module, 6-photoelectric conversion module, 7-data acquisition equipment, 8-industrial computer, 9-hydraulic valve block, 10-hydraulic hose, 11-metallic elastic diaphragm, 12-epoxy polyester point of fixity, 13-sensing grating, 14-casing.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail:
See also Fig. 1 and Fig. 2 earlier, as seen from the figure, the utility model optical fiber raster dynamic weigher for vehicle axle weight, it is characterized in that comprising: first end 21 of the output termination fiber coupler 2 of a LASER Light Source 1, this LASER Light Source 1, the 3rd end 23 of this fiber coupler 2 connects optic fiber grating wavelength demodulation module 5, is connected in series photoelectric conversion module 6, data acquisition equipment 7 and industrial computer 8 more successively and is arranged in the casing 14; Form fluid pressure type pressure sensing mechanism 4 by fiber bragg grating pressure sensing head 3, hydraulic valve block 9 and hydraulic hose array 10, described fiber bragg grating pressure sensing head 3 is with epoxy polyester 12 two ends of sensing grating 13 to be fixed on the metallic elastic diaphragm 11 to constitute, described metallic elastic diaphragm 11 sticks on the described hydraulic valve block 9, and described hydraulic valve block 9 and hydraulic hose array 10 are connected; Second end 22 of described fiber coupler 2 connects the optical fiber of described sensing grating 13.
Fluid pressure type pressure sensing mechanism 4 will produce the drift of wavelength behind pressurized, optic fiber grating wavelength demodulation module 5 is demodulated to described wave length shift the variation of light intensity value, photoelectric conversion module 6 is converted into magnitude of voltage with light intensity value, data acquisition equipment 7 is converted into this magnitude of voltage digital quantity and sends it to industrial computer 8, the pressure that vehicle caused of different load-carryings is different, can obtain different digital quantities by above-mentioned conversion, so by calibration just definitely specified data collecting device 7 with the digital quantity of this magnitude of voltage conversion and the corresponding relation of vehicle axle weight.
Product of the present utility model can be made by such method, at first according to the width of roadway of reality, selects the hydraulic hose array of appropriate length, covers rubber panel on hydraulic hose array top to play the effect that the protection flexible pipe prolongs mission life.The metallic elastic diaphragm material is selected the material of good rigidly, to prevent causing total system to lose efficacy after pressure surpasses the diaphragm yield strength under the situation of overload.After whole system installs, this system is calibrated, determine the corresponding relation of vehicle axle weight and the digital quantity of magnitude of voltage conversion definitely, directly show vehicle axle weight by the display screen of industrial computer.
The utility model device has that measuring speed is fast, reliability is high, cost is low and be easy to advantages such as remote monitoring.
Claims (1)
1, a kind of optical fiber raster dynamic weigher for vehicle axle weight is characterized in that comprising:
First end (21) of the output termination fiber coupler (2) of one LASER Light Source (1), this LASER Light Source (1), the 3rd end (23) of this fiber coupler (2) connects optic fiber grating wavelength demodulation module (5), is connected in series photoelectric conversion module (6), data acquisition equipment (7) and industrial computer (8) more successively and is arranged in the casing (14);
Form fluid pressure type pressure sensing mechanism (4) by fiber bragg grating pressure sensing head (3), hydraulic valve block (9) and hydraulic hose array (10), described fiber bragg grating pressure sensing head (3) is with epoxy polyester (12) two ends of sensing grating (13) to be fixed on a metallic elastic diaphragm (11) to go up and constitute, described metallic elastic diaphragm (11) sticks on the described hydraulic valve block (9), and described hydraulic valve block (9) and hydraulic hose array (10) are connected;
Second end (22) of described fiber coupler (2) connects the optical fiber of described sensing grating (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042854 CN2924496Y (en) | 2006-06-19 | 2006-06-19 | Dynamic weighing device for axle load of fiber grating vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042854 CN2924496Y (en) | 2006-06-19 | 2006-06-19 | Dynamic weighing device for axle load of fiber grating vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924496Y true CN2924496Y (en) | 2007-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620042854 Expired - Lifetime CN2924496Y (en) | 2006-06-19 | 2006-06-19 | Dynamic weighing device for axle load of fiber grating vehicle |
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| Country | Link |
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| CN (1) | CN2924496Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442029C (en) * | 2006-06-19 | 2008-12-10 | 中国科学院上海光学精密机械研究所 | Dynamic weighing device for axle load of fiber grating vehicle |
| CN102252740A (en) * | 2011-04-20 | 2011-11-23 | 东南大学 | Vehicle dynamic weighing sensor |
| WO2018165727A1 (en) | 2017-03-15 | 2018-09-20 | Velsis Sistemas E Tecnologia Viaria S/A | On-board system for measuring weight and other physical variables of vehicles and containers |
| WO2022187922A1 (en) * | 2021-03-10 | 2022-09-15 | Velsis Sistemas E Tecnologia Viaria S.A. | System for weighing moving motor vehicles based on flexible sensors and fibre optics |
-
2006
- 2006-06-19 CN CN 200620042854 patent/CN2924496Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442029C (en) * | 2006-06-19 | 2008-12-10 | 中国科学院上海光学精密机械研究所 | Dynamic weighing device for axle load of fiber grating vehicle |
| CN102252740A (en) * | 2011-04-20 | 2011-11-23 | 东南大学 | Vehicle dynamic weighing sensor |
| WO2018165727A1 (en) | 2017-03-15 | 2018-09-20 | Velsis Sistemas E Tecnologia Viaria S/A | On-board system for measuring weight and other physical variables of vehicles and containers |
| US11035718B2 (en) | 2017-03-15 | 2021-06-15 | Velsis Sistemas E Tecnologia Viaria S/A | Embedded system for measurement of weight and other physical variables in vehicles and containers |
| WO2022187922A1 (en) * | 2021-03-10 | 2022-09-15 | Velsis Sistemas E Tecnologia Viaria S.A. | System for weighing moving motor vehicles based on flexible sensors and fibre optics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081210 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081210 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |