CN102679971B - Resonant mode optical gyroscope signal detection device and method based on virtual instrument - Google Patents
Resonant mode optical gyroscope signal detection device and method based on virtual instrument Download PDFInfo
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Abstract
The invention provides a resonant mode optical gyroscope signal detection device and method based on a virtual instrument, belonging to the technical field of optical gyroscope signal detection. The resonant mode optical gyroscope signal detection device comprises a signal modulating module, a collection unit A, a collection unit B, an FPGA (Field Programmable Gate Array) control unit and a computer based on a PXIe (Pci Express-extensions-for-instrumentation) bus; an object to be detected is a photoelectric mixing module; and the photoelectric mixing module comprises a first detector, a second detector, an integrated optical phase modulator and a light source. According to the invention, modularized hardware of the virtual instrument is used for replacing a traditional detection circuit, hardware developing time is shortened, circuit noise is small, the anti-jamming capability is strong and the gyroscope precision is improved. Digital signal processing of a resonant mode optical gyroscope is carried out on FPGA programming based on labview virtual instrument software; and the verification of an algorithm can be rapidly carried out according to abundant resources in an FPGA and the flexibility of labview graphics programming, so as to accelerate a research speed of the resonant mode optical gyroscope.
Description
Technical field
The present invention relates to optical gyroscope signal detection technique field, be specifically related to a kind of resonance type optical gyroscope signal detection technique based on virtual instrument.
Background technology
Resonance type optical gyroscope is the high precision inertia angular-rate sensor based on Sagnac effect, because it is the structure of whole solid state device of movement-less part, the advantage such as have that volume is little, dynamic range is large, precision is high, start-up time is short and the life-span is long, is subject to paying close attention to more and more widely and studying in recent years.Resonance type optical gyroscope is the interior poor angular velocity that obtains carrier of resonance frequency along counterclockwise two-way light of resonator cavity causing by detecting rotation, because Sagnac effect is extremely faint: when the ring length of integrated optics ring resonator is 12.8cm, when operation wavelength is 1550um, resonance frequency that the turning rate of 1 °/s causes is poor is only 275Hz, and this frequency difference is reflected as the faint variation of detector output signal.Therefore signal detection technique occupies critical role in the research of resonance type optical gyroscope.
The research of resonance type optical gyroscope at present is still in the laboratory study stage, traces it to its cause, and be mainly that various optical noises and circuit noise have greatly limited resonance type optical gyroscope precision.Do not changing on the basis of light path, can only improve resonance type optical gyroscope precision by changing signal detecting method and signal processing algorithm, and traditional testing circuit noise is large, function singleness, design cycle is long, and program optimization and proof of algorithm are all more difficult, be unfavorable for the improvement of input, have a strong impact on the progress of resonance type optical gyroscope.
Summary of the invention
For problems of the prior art, the invention provides a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument.Virtual instrument technique utilizes high performance modularized hardware exactly, and complete the application of various tests, measurement and robotization in conjunction with the software of high efficient and flexible, virtual instrument technique has been widely used in the fields such as automobile making, Aero-Space, military affairs, seamless integrated as based on NI modularized hardware and efficient software instrument, for test, control and design field provide a kind of unified platform, improve the development efficiency of TT&C system.The resonance type optical gyroscope signal supervisory instrument based on virtual instrument that the present invention proposes not only relies on virtual instrument modularized hardware to realize the dirigibility of measuring ability, be convenient to especially the checking of various detection algorithms based on virtual instrument software, this invention contributes to improve the signal detection technique of resonance type optical gyroscope.
The present invention proposes a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument, comprise signal condition module, collecting unit A, collecting unit B, FPGA control module and the composition of the computing machine based on PXIe bus, detected object is photoelectricity mixing module, and described photoelectricity mixing module comprises the first detector, the second detector, integrated optic phase modulator and light source.
The interface signal that described signal condition module realizes between photoelectricity mixing module and collecting unit A, collecting unit B by four part signal modulate circuits mates, and four part signal modulate circuits are respectively:
(1) described signal condition module exports the AI1 port of collecting unit A on the one hand to after amplifying through high-pass filtering, operational amplifier simulation to the optical intensity voltage signal of the first detector output, the simulating signal of AI1 port is converted to digital signal by collecting unit A, and export FPGA control module to, the optical intensity voltage signal of the first detector output is on the other hand through voltage follow, after voltage ratio, obtain judging digital signal into paddy, and export the DI1 port of collecting unit A to, collecting unit A judges that by the paddy that enters of DI1 port digital signal exports FPGA control module to, FPGA control module produces a railway digital signal after above-mentioned two ways of digital signals is processed, and be converted to simulating signal through collecting unit A, export through the AO2 of collecting unit A port, and after amplifying, signal condition module arithmetic amplifier simulation obtains the PZT control signal of light source, then exported to the PZT control end of the light source of photoelectricity mixing module.
(2) described signal condition module exports the AI2 port of collecting unit A to after high-pass filtering, operational amplifier simulation amplification to the optical intensity voltage signal of the second detector output, the simulating signal of AI2 port is converted to digital signal by collecting unit A, and export FPGA control module to, FPGA control module produces a railway digital signal after to above-mentioned digital signal processing, and export computing machine to, machine data processing as calculated, obtains gyro output angle speed.
(3) FPGA control module circulates and produces a road modulation waveform digital signal under the control of computing machine, after being converted to simulating signal, exported by AO1 port collecting unit A, after operational amplifier simulation is amplified, obtain modulation signal at signal condition module Jiang Gai road signal, then exported to the electrode interface of the integrated optic phase modulator of photoelectricity mixing module.
(4) in photoelectricity mixing module the temperature output signal of light source after light source output, after amplifying, operational amplifier simulation exports the AI1 port of collecting unit B at signal condition module Jiang Gai road signal, collecting unit B carries out obtaining digital temperature signal after A/D conversion to light-source temperature output signal, and export computing machine to, machine temperature test control as calculated, complete the processing to digital temperature signal, generate temperature control signals, and after the D/A of collecting unit B conversion, export signal condition module to through AO1 end, after amplifying, the operational amplifier simulation of signal condition module exports the temperature control end of light source to.
The described computing machine based on PXIe bus is the computing machine that comprises resonance type optical gyroscope signal detection module, this detection module is programmed based on labview, obtain man-machine interface, collecting unit B and FPGA control module are all to realize communicating by letter between computing machine by PXIe bus.
The present invention proposes a kind of detection method of the resonance type optical gyroscope signal supervisory instrument based on virtual instrument, comprises following step:
Step 1: the working temperature parameter that modulation waveform parameter and light source are set by the resonance type optical gyroscope signal detection module of computing machine, and moving this signal detection module, labview software is automatically loaded into the FPGA program of FPGA control module in FPGA control module and moves;
Step 2: resonance type optical gyroscope signal detection module obtains the temperature signal of light source through signal condition module and collecting unit B, and the temperature of light source is carried out to FEEDBACK CONTROL, signal detection module is the temperature cycles scan control to light source according to the working temperature parameter of setting, thereby realizes the frequency sweep to light source;
Step 3: FPGA control module is obtained judging that into paddy signal and the first detector export corresponding digital signal by signal condition module and collecting unit A, FPGA control module is exported corresponding digital signal to the first detector and is carried out digital filtering and signal demodulation, and according to the PZT control signal that enters paddy and judge signal and demodulated digital signal FEEDBACK CONTROL light source, simultaneously, resonance type optical gyroscope signal detection module is according to the temperature that enters paddy and judge signal and demodulated digital signal FEEDBACK CONTROL light source, adopt temperature and PZT control signal respectively the outgoing frequency of light source to be carried out to coarse adjustment and fine setting, thereby the resonance the lowest point by the outgoing Frequency Locking of light source at the first detector export resonance curve,
Step 4: FPGA control module obtains the second detector by signal condition module and collecting unit A and exports corresponding digital signal, it is carried out to digital filtering and signal demodulation, and the digital signal that demodulation is produced exports the resonance type optical gyroscope signal detection module of computing machine to, this detection module carries out obtaining the rotational angular velocity of gyro carrier after data processing to it, and test result is exported by signal detection module interface.
The invention has the advantages that:
1, the present invention proposes a kind of resonance type optical gyroscope signal supervisory instrument and method based on virtual instrument, adopt virtual instrument modularized hardware to substitute traditional testing circuit, shortened the hardware development time, and circuit noise is little, antijamming capability is strong, is conducive to the raising of Gyro Precision.
2, the present invention proposes a kind of resonance type optical gyroscope signal supervisory instrument and method based on virtual instrument, based on labview virtual instrument software, to FPGA, programming realizes resonance type optical gyroscope digital signal processing, rely on the dirigibility of the inner rich in natural resources of FPGA and labview graphic programming, can carry out rapidly the checking of algorithm, accelerate the research and development speed of resonance type optical gyroscope.
3, the present invention proposes a kind of resonance type optical gyroscope signal supervisory instrument and method based on virtual instrument, based on labview virtual instrument software design resonance type optical gyroscope signal detection module, can obtain friendly man-machine interface, be convenient to the amendment of tuning parameter.
Brief description of the drawings
Fig. 1 is the structured flowchart of a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument of proposing of the present invention;
Fig. 2 is the functional block diagram of a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument of proposing of the present invention.
In figure: 1-signal condition module; 2-collecting unit A; 3-collecting unit B; 4-FPGA control module; 5-computing machine; 6-photoelectricity mixing module; 7-the first detector; 8-the second detector; 9-integrated optic phase modulator; 10-light source.
Embodiment
Below in conjunction with concrete accompanying drawing, the present invention is described in further detail
The present invention proposes a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument, as shown in Figure 1, is made up of signal condition module 1, collecting unit A2, collecting unit B3, FPGA control module 4 and the computing machine based on PXIe bus 5.Detected object of the present invention is photoelectricity mixing module 6, and described photoelectricity mixing module 6 comprises the first detector 7, the second detector 8, integrated optic phase modulator 9 and light source 10.
The interface signal that described signal condition module 1 realizes between photoelectricity mixing module 6 and collecting unit A2, collecting unit B3 by signal conditioning circuit mates, and it mainly comprises following four part modulate circuits:
(1) optical intensity voltage signal that described signal condition module 1 is exported the first detector 7 exports the AI1 port of collecting unit A2 on the one hand to after amplifying through high-pass filtering, operational amplifier simulation, the simulating signal of AI1 port is converted to digital signal by collecting unit A2, and export FPGA control module 4 to; The optical intensity voltage signal that the first detector 7 is exported obtains judging digital signal into paddy after through voltage follow, voltage ratio on the other hand, and exporting the DI1 port of collecting unit A2 to, collecting unit A2 judges that by the paddy that enters of DI1 port digital signal exports FPGA control module 4 to.FPGA control module 4 produces a railway digital signal after above-mentioned two ways of digital signals is processed, and be converted to simulating signal through collecting unit A2, export through the AO2 of collecting unit A2 port, and after the 1 operational amplifier simulation of signal condition module is amplified, obtain the PZT control signal of light source 10, then exported to the PZT control end of the light source 10 of photoelectricity mixing module 6.
(2) optical intensity voltage signal that described signal condition module 1 is exported the second detector 8 exports the AI2 port of collecting unit A2 to after high-pass filtering, operational amplifier simulation amplification, the simulating signal of AI2 port is converted to digital signal by collecting unit A2, and export FPGA control module 4 to, FPGA control module 4 produces a railway digital signal after to above-mentioned digital signal processing, and export computing machine 5 to, machine 5 data processings, obtain gyro output angle speed as calculated.
(3) FPGA control module 4 circulates and produces a road modulation waveform digital signal under the control of computing machine 5, after being converted to simulating signal, exported by AO1 port collecting unit A2, after operational amplifier simulation is amplified, obtain modulation signal at signal condition module 1 Jiang Gai road signal, then exported to the electrode interface of the integrated optic phase modulator 9 of photoelectricity mixing module 6.
(4) in photoelectricity mixing module 6 temperature output signal of light source 10 after light source 10 output, after amplifying, operational amplifier simulation exports the AI1 port of collecting unit B3 at signal condition module 1 Jiang Gai road signal, collecting unit B3 carries out obtaining digital temperature signal after A/D conversion to light-source temperature output signal, and export computing machine 5 to, machine 5 temperature test controls as calculated, complete the processing to digital temperature signal, generate temperature control signals, and after the D/A of collecting unit B3 conversion, export signal condition module 1 to through AO1 end, after amplifying, the operational amplifier simulation of signal condition module 1 exports the temperature control end of light source 10 to.
The enlargement factor of all operational amplifiers that described signal condition module 1 is used is adjustable, changes the gain of operational amplifier by the resistance of change operational amplifier peripheral circuit.Described collecting unit A2 is preferably NI FlexRIO adaptor module, and the maximum sampling rate of this module simulation input is 100MS/s, and the maximum sampling rate of simulation output is 400MS/s.The DI1 port of described collecting unit A2 is the digital input port A of collecting unit A2, AI1 port is the analog input port A of collecting unit A2, AI2 port is the analog input port B of collecting unit A2, AO1 port is the analog output mouth A of collecting unit A2, and AO2 is the analog output mouth B of collecting unit A2.The function of collecting unit A2 is the digital input end that the simulating signal of AI1 port is carried out exporting to after A/D conversion FPGA control module 4; The simulating signal of AI2 port is carried out exporting to after A/D conversion to the digital input end of FPGA control module 4; The digital signal of DI1 port is directly exported to the digital input end of FPGA control module 4; One railway digital signal of FPGA output is carried out exporting to after D/A conversion to the AO1 port of collecting unit A2; Another railway digital signal of FPGA output is carried out exporting to after D/A conversion to the AO2 port of collecting unit A2.
Described collecting unit B3 is preferably NI DAQ module, and the maximum sampling rate of this module simulation input is 2MS/s, and the maximum sampling rate of simulation output is 2.86MS/s.Described AI1 is the analog input port A of collecting unit B3, and AO1 is the analog output mouth A of collecting unit B3.The function of collecting unit B3 is that the simulating signal of AI1 port is carried out exporting PXIe bus to after A/D conversion; The digital signal of PXIe bus output is carried out exporting to after D/A conversion to the AO1 port of collecting unit B3.
Described FPGA control module 4 is preferably NI FlexRIO FPGA module, and the digital I/O mouth by FPGA control module 4 between collecting unit A2 and FPGA control module 4 communicates.FPGA control module 4 can be controlled FPGA control module 4 by the labview virtual instrument software based on computing machine 5, completes the digital signal processing to resonance type optical gyroscope.
The computing machine 5 of the described computing machine based on PXIe bus 5 for comprising resonance type optical gyroscope signal detection module, this detection module is programmed based on labview, can obtain friendly man-machine interface, completes efficient test assignment.Collecting unit B3 is realized and being communicated by letter with computing machine 5 by PXIe bus with FPGA control module 4.Described resonance type optical gyroscope signal detection module comprises three partial functions: test data processing, modulation signal control and light-source temperature control.(1) test data processing: FPGA control module 4 exports computing machine 5 to after the second detector 8 is exported to corresponding digital signal processing, Computer signal detection module Jiang Gai road signal obtains the Output speed of gyro after divided by constant multiplier.(2) modulation signal control: Modulation Signal Parameters is set by computing machine 5 signal detection modules, and produce Modulation Signal Parameters data according to arranging, and export these data to FPGA control module 4 by PXIe bus, produce corresponding modulation waveform data thereby control FPGA control module 4.(3) light-source temperature control: the operating temperature range of light source 10 is set by Computer signal detection module, and exports the digital signal of corresponding digital signal generation FEEDBACK CONTROL light-source temperature according to light-source temperature, thereby the temperature of light source 10 is controlled.
A kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument that the present invention proposes, the function of realization has: signal condition function, A/D translation function, D/A translation function, digital signal processing function and COMPUTER DETECTION processing capacity.
Described signal condition function is that the output signal of photoelectricity mixing module 6 is converted to the input signal mating with collecting unit A2 and collecting unit B3, and the output signal of collecting unit A2 and collecting unit B3 is converted to the input signal mating with photoelectricity mixing module 6.
Signal condition function comprises that the digital signal that is obtained judging digital signal and being converted into the DI1 port of collecting unit A2 into paddy by the output of the first detector 7 inputs, the optical intensity voltage signal of the output of the first detector 7 is converted to the simulating signal input of the AI1 port of collecting unit A2, the optical intensity voltage signal of the output of the second detector 8 is converted to the simulating signal input of the AI2 port of collecting unit A2, the simulating signal of the AO1 port output of collecting unit A2 is converted to modulation signal, the simulating signal of the AO1 port output of collecting unit A2 is converted to the PZT control signal of light source 10, light-source temperature output signal is converted to the simulating signal input of the AI1 port of collecting unit B3, and the simulating signal of the AO1 port output of collecting unit B3 is converted to light-source temperature control signal.
Between described A/D translation function, D/A translation function settling signal conditioning module 1 and FPGA control module 4, and mould/number, D/A switch between signal condition module 1 and computing machine 5.
A/D, D/A translation function comprises that the numeral of the DI1 port of collecting unit A2 is entered to paddy judges that digital signal directly exports FPGA control module 4 to, the simulating signal of the AI1 port of collecting unit A2 is converted to the digital signal input of FPGA control module 4, the simulating signal of the AI2 port of collecting unit A2 is converted to the digital signal input of FPGA control module 4, the FPGA control module 4 modulation waveform digital signal producing that circulates is converted to the analog output signal of the AO1 port of collecting unit A2, the PZT control figure signal that FPGA control module 4 is produced is converted to the analog output signal of the AO2 of collecting unit A2, the analog input signal of the AI1 port of collecting unit B3 is converted to the digital signal input of computing machine 5, the temperature control figure signal that computing machine 5 is produced is converted to the analog output signal of the AO1 port of collecting unit B3.
Digital signal processing function:
The modulation waveform supplemental characteristic that first described digital signal processing function arranges according to resonance type optical gyroscope signal detection module generates the modulation waveform data of one-period, so metacyclic D/A input end that modulation waveform data is sent to collecting unit A2, thus required modulation signal produced.
Secondly the first detector 7 is exported to corresponding digital signal carries out digital filtering and signal demodulation, and judges that according to entering paddy signal judges whether light source center frequency is adjusted in resonance paddy frequency range.In the time that light source center frequency is in resonance paddy frequency range, produce FEEDBACK CONTROL digital signal according to signal demodulation output, FEEDBACK CONTROL digital signal one side is by the PZT of collecting unit A2 FEEDBACK CONTROL light source 10 after D/A conversion, machine signal detection module and collecting unit B3 process the temperature of FEEDBACK CONTROL light source 10 afterwards as calculated on the other hand, thereby complete, the closed loop frequency of light source 10 is followed the tracks of, by light source outgoing frequency adjustment to resonance paddy center.
Then the second detector 8 is exported to corresponding digital data and carry out digital filtering and signal demodulation, and the digital signal of demodulation output is sent to computing machine 5 by PXIe bus, Computer signal detection module carries out data processing to this digital signal, to the useful information that is comprising gyroscope speed in the digital signal of the second detector 8 output signal demodulation outputs.
COMPUTER DETECTION processing capacity:
First resonance type optical gyroscope signal detection module arranges the parameter of modulation waveform and the working temperature parameter of light source 10, and control FPGA control module 4 produce modulation waveform data and circulation send; Then the FEEDBACK CONTROL digital signal producing according to FPGA control module 4 and the temperature of light source 10 are exported corresponding digital signal and are completed the control to light-source temperature, realize frequency sweep and frequency-tracking to light source; The digital signal that this module is also exported demodulation output to the second detector 8 is carried out data processing, thereby obtain the rotational angular velocity of resonance type optical gyroscope carrier, and test result is exported by detection module interface, reach the object of resonance type optical gyroscope input.
The present invention proposes a kind of detection method of the resonance type optical gyroscope signal supervisory instrument based on virtual instrument, specifically comprises following step:
Step 1: the working temperature parameter that modulation waveform parameter and light source 10 are set by the resonance type optical gyroscope signal detection module of computing machine 5, and move this signal detection module, now labview software is loaded into the FPGA program of FPGA control module 4 operation in FPGA control module 4 automatically.
Step 2: resonance type optical gyroscope signal detection module obtains the temperature signal of light source 10 through signal condition module 1 and collecting unit B3, and the temperature of light source 10 is carried out to FEEDBACK CONTROL, signal detection module is the temperature cycles scan control to light source 10 according to the working temperature parameter of setting, thereby realizes the frequency sweep to light source 10.
Step 3: FPGA control module 4 is obtained judging that into paddy signal and the first detector 7 export corresponding digital signal by signal condition module 1 and collecting unit A2, FPGA control module 4 is exported corresponding digital signal to the first detector 7 and is carried out digital filtering and signal demodulation, and according to the PZT control signal that enters paddy and judge signal and demodulated digital signal FEEDBACK CONTROL light source 10.Meanwhile, resonance type optical gyroscope signal detection module is according to the temperature that enters paddy and judge signal and demodulated digital signal FEEDBACK CONTROL light source 10.Adopt temperature and PZT control signal respectively the outgoing frequency of light source 10 to be carried out to coarse adjustment and fine setting, thus by the outgoing Frequency Locking of light source 10 the resonance the lowest point at the first detector 7 export resonance curves.
Step 4: FPGA control module 4 obtains the second detector 8 by signal condition module 1 and collecting unit A2 and exports corresponding digital signal, it is carried out to digital filtering and signal demodulation, and the digital signal that demodulation is produced exports the resonance type optical gyroscope signal detection module of computing machine 5 to, this detection module carries out obtaining the rotational angular velocity of gyro carrier after data processing to it, and test result is exported by signal detection module interface.
Claims (6)
1. the resonance type optical gyroscope signal supervisory instrument based on virtual instrument, it is characterized in that: comprise signal condition module, collecting unit A, collecting unit B, FPGA control module and the computing machine based on PXIe bus, detected object is photoelectricity mixing module, and described photoelectricity mixing module comprises the first detector, the second detector, integrated optic phase modulator and light source;
The interface signal that described signal condition module realizes between photoelectricity mixing module and collecting unit A, collecting unit B by four part signal modulate circuits mates, and four part signal modulate circuits are respectively:
(1) described signal condition module exports the AI1 port of collecting unit A on the one hand to after amplifying through high-pass filtering, operational amplifier simulation to the optical intensity voltage signal of the first detector output, the simulating signal of AI1 port is converted to digital signal by collecting unit A, and export FPGA control module to, the optical intensity voltage signal of the first detector output is on the other hand through voltage follow, after voltage ratio, obtain judging digital signal into paddy, and export the DI1 port of collecting unit A to, collecting unit A judges that by the paddy that enters of DI1 port digital signal exports FPGA control module to, FPGA control module produces a railway digital signal after above-mentioned two ways of digital signals is processed, and be converted to simulating signal through collecting unit A, export through the AO2 of collecting unit A port, and after amplifying, signal condition module arithmetic amplifier simulation obtains the PZT control signal of light source, then exported to the PZT control end of the light source of photoelectricity mixing module,
(2) described signal condition module exports the AI2 port of collecting unit A to after high-pass filtering, operational amplifier simulation amplification to the optical intensity voltage signal of the second detector output, the simulating signal of AI2 port is converted to digital signal by collecting unit A, and export FPGA control module to, FPGA control module produces a railway digital signal after to above-mentioned digital signal processing, and export computing machine to, machine data processing as calculated, obtains gyro output angle speed;
(3) FPGA control module circulates and produces a road modulation waveform digital signal under the control of computing machine, after being converted to simulating signal, exported by AO1 port collecting unit A, in signal condition module, the simulating signal of AO1 port is obtained to modulation signal after operational amplifier simulation is amplified, then exported to the electrode interface of the integrated optic phase modulator of photoelectricity mixing module;
(4) in photoelectricity mixing module the temperature output signal of light source after light source output, in signal condition module, the temperature output signal of light source after amplifying, is exported in operational amplifier simulation to the AI1 port of collecting unit B, collecting unit B carries out obtaining digital temperature signal after A/D conversion to light-source temperature output signal, and export computing machine to, machine temperature test control as calculated, complete the processing to digital temperature signal, generate temperature control signals, and after the D/A of collecting unit B conversion, export signal condition module to through AO1 end, after amplifying, the operational amplifier simulation of signal condition module exports the temperature control end of light source to,
The described computing machine based on PXIe bus is the computing machine that comprises resonance type optical gyroscope signal detection module, this detection module is programmed based on labview, obtain man-machine interface, collecting unit B and FPGA control module are all to realize communicating by letter between computing machine by PXIe bus.
2. a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument according to claim 1, it is characterized in that: the enlargement factor of the operational amplifier that each signal conditioning circuit of described signal condition module adopts is adjustable, change the gain of operational amplifier by the resistance of change operational amplifier peripheral circuit.
3. a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument according to claim 1, it is characterized in that: described collecting unit A is NI FlexRIO adaptor module, maximum sampling rate is 100MS/s, and the maximum sampling rate of simulation output is 400MS/s.
4. a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument according to claim 1, it is characterized in that: described collecting unit B is NI DAQ module, the maximum sampling rate of this module simulation input is 2MS/s, and the maximum sampling rate of simulation output is 2.86MS/s.
5. a kind of resonance type optical gyroscope signal supervisory instrument based on virtual instrument according to claim 1, it is characterized in that: described FPGA control module is NI FlexRIO FPGA module, the digital I/O mouth by FPGA control module between collecting unit A and FPGA control module communicates.
6. a detection method for the application resonance type optical gyroscope signal supervisory instrument based on virtual instrument as claimed in claim 1, is characterized in that: comprise following step:
Step 1: the working temperature parameter that modulation waveform parameter and light source are set by the resonance type optical gyroscope signal detection module of computing machine, and moving this signal detection module, labview software is automatically loaded into the FPGA program of FPGA control module in FPGA control module and moves;
Step 2: resonance type optical gyroscope signal detection module obtains the temperature signal of light source through signal condition module and collecting unit B, and the temperature of light source is carried out to FEEDBACK CONTROL, signal detection module is the temperature cycles scan control to light source according to the working temperature parameter of setting, thereby realizes the frequency sweep to light source;
Step 3: FPGA control module is obtained judging that into paddy signal and the first detector export corresponding digital signal by signal condition module and collecting unit A, FPGA control module is exported corresponding digital signal to the first detector and is carried out digital filtering and signal demodulation, and according to the PZT control signal that enters paddy and judge signal and demodulated digital signal FEEDBACK CONTROL light source, simultaneously, resonance type optical gyroscope signal detection module is according to the temperature that enters paddy and judge signal and demodulated digital signal FEEDBACK CONTROL light source, adopt temperature and PZT control signal respectively the outgoing frequency of light source to be carried out to coarse adjustment and fine setting, thereby the resonance the lowest point by the outgoing Frequency Locking of light source at the first detector export resonance curve,
Step 4: FPGA control module obtains the second detector by signal condition module and collecting unit A and exports corresponding digital signal, it is carried out to digital filtering and signal demodulation, and the digital signal that demodulation is produced exports the resonance type optical gyroscope signal detection module of computing machine to, this detection module carries out obtaining the rotational angular velocity of gyro carrier after data processing to it, and test result is exported by signal detection module interface.
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