Summary of the invention
The invention provides the online strain-Sensing device of a kind of electric power pylon, the problem of online early warning can not be in time found and can not be reached in the strain to electric power pylon that has solved the prior art existence.
The present invention overcomes the above problems by following scheme:
The online strain-Sensing device of a kind of electric power pylon, comprise electric power pylon, Fibre Optical Sensor, optical fiber, Fibre Optical Sensor demodulating system, solar electric power supply system and remote monitoring analytic system, described Fibre Optical Sensor is a fiber-optic grating sensor, Fibre Optical Sensor is attached on the key structure parts of electric power pylon by welding, Fibre Optical Sensor links together by optical fiber and Fibre Optical Sensor demodulating system, and solar electric power supply system and Fibre Optical Sensor demodulating system link together; Described Fibre Optical Sensor demodulating system is by the optical channel handover module, spectral analysis module, light source module, built-in PC processor and wireless signal generator are formed, the built-in PC processor is connected the light signal of control to the Fibre Optical Sensor emission with light source module, the built-in PC processor is connected the switching with the control path channels with the optical channel handover module, the built-in PC processor is connected with spectral analysis module realizing to be accepted and analyzes the light signal of Fibre Optical Sensor reflected back, built-in PC processor and wireless signal generator link together, in described remote monitoring analytic system, be provided with wireless signal receiver, this wireless signal receiver be arranged in the Fibre Optical Sensor demodulating system the wireless connections of wireless signal generator together.
The optical channel that is provided with in the described optical channel handover module is four the tunnel, and this four road optical channel is connected with Fibre Optical Sensor respectively.
The present invention utilizes the detection system that makes up based on fiber-optic grating sensor, can in time obtain the real-time status of electric power pylon strain, has realized the online detection and the early warning of electric power pylon.
Specific embodiment
The online strain-Sensing device of a kind of electric power pylon, comprise electric power pylon 1, Fibre Optical Sensor 2, optical fiber 3, Fibre Optical Sensor demodulating system 5, solar electric power supply system 4 and remote monitoring analytic system 6, described Fibre Optical Sensor 2 is a fiber-optic grating sensor, Fibre Optical Sensor 2 is attached on the key structure parts of electric power pylon 1 by welding, Fibre Optical Sensor 2 links together by optical fiber 3 and Fibre Optical Sensor demodulating system 5, and solar electric power supply system 4 links together with Fibre Optical Sensor demodulating system 5; Described Fibre Optical Sensor demodulating system 5 is by optical channel handover module 8, spectral analysis module 9, light source module 7, built-in PC processor 10 and wireless signal generator 11 are formed, built-in PC processor 10 is connected the light signal of control to Fibre Optical Sensor 2 emissions with light source module 7, built-in PC processor 10 is connected the switching with the control path channels with optical channel handover module 8, built-in PC processor 10 is connected with spectral analysis module 9 realizing to be accepted and analyzes the light signal of Fibre Optical Sensor 2 reflected backs, built-in PC processor 10 links together with wireless signal generator 11, in described remote monitoring analytic system 6, be provided with wireless signal receiver, this wireless signal receiver be arranged in the Fibre Optical Sensor demodulating system 5 11 wireless connections of wireless signal generator together.
The optical channel that is provided with in the described optical channel handover module 8 is four the tunnel, and this four road optical channel is connected with Fibre Optical Sensor respectively.
The online strain-Sensing device of electric power pylon among the present invention comprises 4 parts:
Fibre Optical Sensor: be used for experiencing the variation of electric power pylon structural strain, Fibre Optical Sensor is made based on fiber grating, is installed in the key position of electric power pylon structure by welding or surface-pasted mode.
The Fibre Optical Sensor demodulating system: the wavelength of realizing fiber grating detects and the strain inverting, and utilizes wireless sending module to realize the wireless data teletransmission.
Structural strain and material failure analytic system: the mechanical property of material in the strain that detects the electric power pylon steel obtain by the contrast Fibre Optical Sensor and the database, analyze the lost efficacy probability of generation of practical structures.Judge according to the numerical values recited of dependent variable whether structure plastic yield takes place, exceed the yield point of material, then send early warning signal as the deflection of fruit structure.
Solar electric power supply system: utilize solar cell to collect sun power, and luminous energy is converted into electric energy, offer Fibre Optical Sensor demodulating system power supply at the scene.
The course of work of the online strain-Sensing device of electric power pylon is as follows:
Utilize solar panel power supply to be provided for the Fibre Optical Sensor demodulating system, Fibre Optical Sensor is installed in the key position of electric power pylon structure.When electric power pylon is subjected to cable, icing or wind action, to cause that structural strain changes, cause the fiber grating reflected light signal wavelength variations in the modulation optical fiber sensor, reflected light after Fibre Optical Sensor will be modulated turns back to demodulating system, from light signal, extract strain information and initial analysis on the spot, send data by wireless sending module to remote monitoring center then.Surveillance center is input in structural strain and the material failure analytic system after receiving data, judges whether the structural strain numerical value that Fibre Optical Sensor detects exceeds the strain limit value of setting and provide early warning signal.