Fiber electro-optic sensing system
A sensing system, electro-optical sensor technology, applied in the direction of using optical devices to transmit sensing components, etc., can solve the problems of expensive optical fiber sensors and signal processing systems, low accuracy of physical or chemical measurement optical fiber sensors, etc., to overcome electromagnetic and other environments The influence of factors, the expansion of the scope of application, the effect of a wide range of applications
Inactive Publication Date: 2012-07-25
GP PHOTONICS INC
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Problems solved by technology
The disadvantages of the optical fiber sensing system are: the optical fiber sensor and the signal processing system are relatively expensive, and the test accuracy of some physical or chemical quantities is low or it is difficult to make the corresponding optical fiber sensor for testing. Therefore, the existing optical fiber sensor and the transmission system of the system Sensing applications are far less extensive than traditional electronic sensing systems
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[0020] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0021] figure 1 A schematic diagram of an electronic sensing system is given. The electronic sensor system 7 includes an electronic sensor 4 , a drive circuit control 2 and an output signal processing circuit 6 . Electronic sensor 4 is defined as any sensor device that can convert physical or chemical quantities and their changes into voltage or current changes under the drive of electronic circuits. This type of sensing device is a very mature device with various types and wide applications.
[0022] figure 2 A schematic diagram of an adjustable optical attenuator 15 is given. The adjustable optical attenuator 15 includes an input port 8 with a fiber pigtail, an optical attenuator 12 , an output port 14 with a fiber pigtail and a driving circuit 10 thereof. The working principle of the adjustable optical attenuator 15 is: the optical sign...
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The invention relates to a fiber electro-optic sensing system. The technical scheme includes that the fiber electro-optic sensing system comprises a DFB (distributed feedback) laser device, a driving control system thereof, an electro-optic sensor, a photoelectric receiving system, a driving control system thereof and a sensing signal analyzing and processing system, an output port of the DFB laser device is connected with the electro-optic sensor, an output port of the electro-optic sensor is connected to the photoelectric receiving system, and output signals of the photoelectric receiving system are inputted to the sensing signal analyzing and processing system via the driving control circuit of the photoelectric receiving system. The fiber electro-optic sensing system is reasonable in design, the application range of the electro-optic sensor is expanded, influence of environmental factors such as electromagnetism and the like can be overcome, long-distance sensing application needs can be met, a sensing network can be formed conveniently, and the fiber electro-optic sensing system has the advantages of wide application, low cost, easiness in installation and production, and the like, and can be widely applied to transmission sensing signals in long-distance and harsh environments.
Description
technical field [0001] The invention belongs to the field of optoelectronics, in particular to an optical fiber electro-optic sensing system. Background technique [0002] The electronic sensor system can convert various changes of physical or chemical quantities into voltage or current. Its technology is relatively mature and has a wide range of applications. However, in systems such as sensing measurement or security alarms that require long-distance sensing signal transmission and control, the transmission system of electronic sensors is often susceptible to interference from external environments such as electromagnetics. At the same time, it is difficult for traditional electronic sensor systems to form a sensor network. With the continuous development of optical fiber technology, optical fiber sensing system has been more and more used in the field of optical fiber communication. The optical fiber sensing system has the characteristics of anti-electromagnetic interfe...
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IPC IPC(8): G01D5/353
Inventor 高培良
Owner GP PHOTONICS INC