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Portable optical fiber dynamic weighing system

A portable, static weight technology, applied in the direction of weighing temperature compensation device, weighing, measuring device, etc., can solve the problems of limited application, limited optical mode of signal transmission, etc.

Inactive Publication Date: 2015-03-04
苏州佳因特光电科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, regardless of the specific design of the dynamic weighing system, this scheme suffers from some defects as follows: For piezoelectric ceramic dynamic weighing sensors, the inherent characteristics of piezoelectric materials, such as hysteresis effect, creep effect and temperature sensitivity greatly limit its Applications
Signal transmission is limited to optical means and confined to fiber optic cables

Method used

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  • Portable optical fiber dynamic weighing system
  • Portable optical fiber dynamic weighing system
  • Portable optical fiber dynamic weighing system

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Embodiment Construction

[0031] figure 1 In the demodulator 1-2, the FBG wavelength shift can be converted into a change in the intensity of light, which is subsequently processed by analog electronic signals containing custom electronic filters and amplifiers. This demodulator 1-2 can adoptimage 3 method by using a broadband light source 3-1 and a tunable filter 3-2 or Figure 4 The shown tunable laser 4-1 implements wavelength division multiplexing (WDM). Therefore, with this interrogator 1-2, any very small strain change at the detection point can be easily detected by the sensor detecting the wavelength change of the FBG. The detected signal is transmitted to the computer 1-4 through the data line 1-5 through the data acquisition system 1-3, and is analyzed by software to provide information such as the weight, weight distribution, size, and elapsed time of the vehicle.

[0032] The measurement principle of the dynamic monitoring sensor of the present utility model is as follows:

[0033] Dete...

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PUM

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Abstract

The invention belongs to an intersected field of optical fiber sensors and traffic management. Specifically, the invention provides a portable instrument and a measurement method for measuring total weight, weight distribution (including weight of each wheel of a vehicle), distance between front and rear axles and distance between left and right wheels of a moving vehicle. Moreover, based on the obtained basic information, the invention also can provide some ''intelligent information'' of the vehicle. Besides, by comparing the obtained information with general parameters of the vehicle and by assistance of some other sensors (such as an infrared temperature sensor), the portable instrument and the measurement method disclosed by the invention can be used for further predicting quantity of passengers in the vehicle, load weight and relative positions thereof in the vehicle. According to the portable instrument and the measurement method disclosed by the invention, optical fiber sensing and transduction are adopted, signal transmission is realized in an optical way only and inside an optical cable only. Therefore, the characteristics require that the optical fiber sensor is especially applicable to occasions with high requirements on safety.

Description

technical field [0001] The invention belongs to the intersection field of Fiber Bragg Grating (Fiber Bragg Grating, FBG) sensor and traffic management. Specifically, the invention provides a portable instrument and measuring method to measure the total weight, weight distribution (including the weight of each wheel of the vehicle) and the distance between the front and rear axles and the distance between the left and right wheels of the moving vehicle. Background technique [0002] The dynamic weighing system can weigh the vehicle in motion, and the measured vehicle does not need to stop during the measurement. Dynamic weighing systems play an important role in road paving, bridge design and monitoring, and traffic management. The dynamic weighing system can also improve the efficiency of static weighing, reduce illegal vehicles, and provide traffic managers with accurate statistical data such as road flow. [0003] The present invention addresses technical and practical i...

Claims

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Application Information

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IPC IPC(8): G01G19/03G01G23/48
Inventor 张鸿涛
Owner 苏州佳因特光电科技有限公司
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