Split type channel ultrasonic based on fibre optic data transmission checks systemTechnical field
This technology belongs to ultrasonic examination system field, is specifically related to a kind of split type channel ultrasonic based on fibre optic data transmission and checks system.
Background technology
In nuclear industry Ultrasonic Nondestructive, such as reactor pressure vessel inspection, whether defective it is required for multiple path ultrasonic flaw detector detection inside workpiece, if any then determining defect length, position and equivalent size.Multiple path ultrasonic flaw detector is wherein indispensable core, its Main Function is, after each passage probe echo-signal is carried out data acquisition, A/D conversion, Digital Signal Processing, to send data to ultrasonic examination software by network and carry out defect analysis.
In actual use, channel ultrasonic instrument as an independent unit, the work that is placed in nuclear island somewhere.When working long hours, the inlet and outlet of the radiator fan of Ultrasound Instrument can amass full dust, owing to being operated in radioactive environment, is often mingled with radioactive substance in these dusts, and some radioactive substance can enter instrument internal, causes personnel unexpected illuminated.Moreover, in reactor pressure vessel inspection project, the connection cable very long (about tens meters) of probe and Ultrasound Instrument, so it is easily caused cable winds in mechanical verification device, causes device damage, simultaneously, the more long impedance of cable is more high, result in the decay of ultrasonic signal, and long cable is readily incorporated outside electromagnetic interference, reduce signal to noise ratio.
Summary of the invention
It is an object of the invention to: provide a kind of split type channel ultrasonic based on fibre optic data transmission to check system, solve Ultrasound Instrument in radioactive environment, use problem encountered.
Technical scheme is as follows: a kind of split type channel ultrasonic based on fibre optic data transmission checks system, including probe, front root module, terminal module, collecting computer, front-end module includes data acquisition module, optical module communication interface A, terminal module includes optical module communication interface B, data processing module, wherein pop one's head in data acquisition module signal being passed in front root module, optical module communication interface A is passed to after data acquisition module carries out data conversion, optical module communication interface A is by the optical module communication interface B in optical connection terminal module, pass to data processing module afterwards, data processing module carries out data process, and terminal module is connected with collecting computer, signal is ultimately transferred to collecting computer, collecting computer is analyzed.
Data acquisition module includes radiating circuit, receive circuit, Signal-regulated kinase, A/D modular converter, optic fiber emission modules, power module circuitry A, power module circuitry A powers to each several part in data acquisition module, radiating circuit, receive circuit, Signal-regulated kinase, A/D modular converter, optic fiber emission modules is sequentially connected in series, radiating circuit launches a signal to probe, probe feeds back a signal at once to accepting circuit after receiving this signal, receive after circuit receives and pass to Signal-regulated kinase again, after signal condition, pass to A/D modular converter carry out A/D conversion, pass to again and after optic fiber emission modules converts a signal into optical signal, pass to optical module communication interface A, optical module communication interface A is by the optical module communication interface B in optical connection terminal module, optical signal passes to data processing module.
Data processing module includes optic fiber transceiver module, FPGA signal processing module, ARM, network bridging chip, RJ45 network, data storage, power module circuitry B, power module circuitry B powers to each several part in data processing module, wherein optic fiber transceiver module, FPGA signal processing module, ARM, network bridging chip, RJ45 network is sequentially connected in series, optical signal passes to optic fiber transceiver module, FPGA signal processing module is passed to after optic fiber transceiver module is converted to the signal of telecommunication, signal is stored among data storage after processing by FPGA, and ARM can read signal from data storage, again signal is passed to network bridging chip, its signal passes to RJ45 network, finally signal is passed to collecting computer
Described probe has several.
The remarkable result of the present invention is in that: reduce Ultrasound Instrument by the risk of radiocontamination, by split-type design and optical-fibre communications, only need an optical fiber cable cable tie to replace the ultrasonic cable of numerous complicated, improve ultrasonic signal surplus sensitivity, reduce electromagnetic interference simultaneously, improve signal to noise ratio.
Accompanying drawing explanation
Fig. 1 is that a kind of split type channel ultrasonic based on fibre optic data transmission of the present invention checks system schematic
Fig. 2 is that a kind of split type channel ultrasonic based on fibre optic data transmission of the present invention checks System Data Collection Module schematic diagram
Fig. 3 is that a kind of split type channel ultrasonic based on fibre optic data transmission of the present invention checks system data processing module schematic diagram
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, split type channel ultrasonic based on fibre optic data transmission checks system, including probe, front root module, terminal module, collecting computer, front-end module includes data acquisition module, optical module communication interface A, terminal module includes optical module communication interface B, data processing module, wherein pop one's head in data acquisition module signal being passed in front root module, optical module communication interface A is passed to after data acquisition module carries out data conversion, optical module communication interface A is by the optical module communication interface B in optical connection terminal module, pass to data processing module afterwards, data processing module carries out data process, and terminal module is connected with collecting computer, signal is ultimately transferred to collecting computer, collecting computer is analyzed.
Data acquisition module includes radiating circuit, receive circuit, Signal-regulated kinase, A/D modular converter, optic fiber emission modules, power module circuitry A, power module circuitry A powers to each several part in data acquisition module, radiating circuit, receive circuit, Signal-regulated kinase, A/D modular converter, optic fiber emission modules is sequentially connected in series, radiating circuit launches a signal to probe, probe feeds back a signal at once to accepting circuit after receiving this signal, receive after circuit receives and pass to Signal-regulated kinase again, after signal condition, pass to A/D modular converter carry out A/D conversion, pass to again and after optic fiber emission modules converts a signal into optical signal, pass to optical module communication interface A, optical module communication interface A is by the optical module communication interface B in optical connection terminal module, optical signal passes to data processing module.
Data processing module includes optic fiber transceiver module, FPGA signal processing module, ARM, network bridging chip, RJ45 network, data storage, power module circuitry B, power module circuitry B powers to each several part in data processing module, wherein optic fiber transceiver module, FPGA signal processing module, ARM, network bridging chip, RJ45 network is sequentially connected in series, optical signal passes to optic fiber transceiver module, FPGA signal processing module is passed to after optic fiber transceiver module is converted to the signal of telecommunication, signal is stored among data storage after processing by FPGA, and ARM can read signal from data storage, again signal is passed to network bridging chip, its signal passes to RJ45 network, finally signal is passed to collecting computer.