CN107449445A - The method of testing and test system of a kind of open-loop optical fiber gyro - Google Patents
The method of testing and test system of a kind of open-loop optical fiber gyro Download PDFInfo
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- CN107449445A CN107449445A CN201710744390.7A CN201710744390A CN107449445A CN 107449445 A CN107449445 A CN 107449445A CN 201710744390 A CN201710744390 A CN 201710744390A CN 107449445 A CN107449445 A CN 107449445A
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- gyro
- capture card
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- control circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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- Manufacturing & Machinery (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Abstract
The invention provides a kind of method of testing of open-loop optical fiber gyro, wherein, method of testing comprises the following steps：The original sampling data of step 1) gyro output passes to signal amplification circuit, and according to corresponding to this sampled point rate table rotating speed, judge to gather card port output state；Step 2) capture card is sampled, and smooth one value of output is carried out with 3200 points per second when it is sampled；Step 3) data convert；Step 4) Data Collection is simultaneously calculated, preserved.The present invention has also put forward a kind of test system of open-loop optical fiber gyro, including rate table, gyro is provided with the rate table, draw plug on the gyro includes gyro power feeder ear and gyro output end, the gyro power feeder ear is connected by power control circuit with power supply, the gyro output end is connected by signal amplification circuit with capture card output end, and the power control circuit and signal amplification circuit are connected with capture card, and the capture card is connected with middle control host computer.
Description
Technical field
The present invention relates to open-loop optical fiber gyro measuring technology, a kind of method of testing in particular to open-loop optical fiber gyro and
Test system.
Technical background
Open-loop optical fiber gyro with its small size, low cost, it is simple in construction flexibly and be widely used in various Tactical Application fields
And civil area.The optical fibre gyro test process consuming time is longer, and needs someone to monitor and operate in the process, therefore meeting
Expend more manpower.Ensure the high efficiency of batch production due to needing to lift testing efficiency, and the factor such as can use manpower and material resources sparingly,
There are many new test requests, as the not power failure test requirement of optical fibre gyro can gather gyro number incessantly for a long time
It can be automatically powered off under certain condition according to the power failure test requirement of, optical fibre gyro and being capable of automatic recovery of power supply, optical fibre gyro
Constant multiplier test request can control the rotation of turntable, and can strictly control turntable rotate frequency and amplitude, light
The temperature property test of fine gyro requires the heating cooling work of control incubator, and heating or the rate of temperature fall of control incubator
Deng.Original test equipment and test software can not increasingly meet current testing requirement, it is therefore desirable to by constantly visiting
Rope develops new optical fibre gyro test system.
Have some optical fibre gyro parameter acquisitions and test system at present, optical fibre gyro test system such as based on USB with
Optical fibre gyro test system based on RS-232 etc., although the basic parameter that these test systems can complete optical fibre gyro is surveyed
Examination, all there is in place of some shortcomings, although such as optical fibre gyro test system connection based on RS-232 it is simple, still
Message transmission rate is slow, thus becomes the bottleneck of high speed data transfer；Although the optical fibre gyro test system based on USB can
To solve the problems, such as transmission rate, unit interval data throughout simultaneously, but its hardware circuit is relatively complicated, tests number
It is low according to precision.In addition, also there is another weak point for both test systems：Automaticity is low, with control manually
Incubator and turntable processed, operating procedure is more complicated during causing to test, and extends the testing time, test result is not directly perceived, the above
These are all current optical fibre gyro test urgent problems.
A kind of in consideration of it, new optical fibre gyro automatization test system of invention, it is possible to increase fiber optic gyroscope performance test effect
Rate, measuring accuracy and the degree of accuracy are improved, can preferably serve the manufacture of high-volume optical fibre gyro.
The content of the invention
In view of this, it is a primary object of the present invention to provide method of testing and the test system of a kind of open-loop optical fiber gyro
System.
The technical scheme that it is used is as follows：
A kind of method of testing of open-loop optical fiber gyro, before test, is proceeded as follows：
Step A：The test pattern of high/low/normal temperature is configured, the temperature for automatically controlling rate table reaches specified
Value, host computer order capture card exports low level during this alternating temperature, power down process is carried out to gyro, when temperature reaches test
It is required that when, host computer order capture card output high level, power supply is operated by power control circuit to gyro power supply, now
Capture card starts to receive gyro output data and carries out display and synchronous preservation；
Step B：Rate table is set in advance as remote control state, the automatic loading speed file of host computer, and speed control
The speed that turntable is pressed in speed file carries out the automatic switchover of certain frequency；
After above-mentioned steps end of operation, following steps are performed
Step 1) gyro output data, and according to corresponding to loading speed document control sampled point rate table rotating speed；
Step 2) capture card is sampled, and its sample frequency carries out smooth one value of output with 3200 points per second；
Step 3) data convert；
Step 4) Data Collection is simultaneously calculated, preserved.
In step 1), if control turntable do not work or its rotating speed be less than setting threshold value when, collection card port output
Low level simultaneously makes signal amplify 100 times of outputs by signal amplification circuit, when its rotating speed is more than or equal to the threshold value of setting, directly
Into step 2).
In step 4), including zero bias/bias repeatability, scale factor, threshold value resolution ratio are calculated successively, the step
16 tunnels are surveyed simultaneously.
Present invention also offers a kind of test system of open-loop optical fiber gyro,
Including rate table, gyro is provided with the rate table, the draw plug on the gyro includes gyro power
Feeder ear and gyro output end, the gyro power feeder ear are connected by power control circuit with power supply, the gyro
Output end is connected by signal amplification circuit with capture card output end, the power control circuit and signal amplification circuit and collection
Card connection, the capture card are connected with middle control host computer；The power control circuit and signal control circuit are respectively connecting to
One power module and second source module；The power control circuit connects respectively with the first power module and gyro power feeder ear
The power on/off for controlling gyro is connect, when capture card exports high level to power control circuit, power control circuit is to gyro
Normal power supply, when capture card exports low level to power control circuit, gyro power-off；The interface and gyro of signal amplification circuit
Output end is connected to control gyro output signals amplification, and when capture card exports high level to power control circuit, gyro is defeated
Output is to capture card after going out 100 times of amplification, and capture card is transmitted to host computer after output signal is handled, when capture card is to power supply
During circuit output low level, gyro output signals, which do not amplify, is directly transferred to capture card, the output signal that capture card will collect
Export to host computer.
The communication module is RS-232C communication units.
The signal amplification circuit includes calculus of differences unit and analog switch module, is set at the analog switch module
There are multiple analog switch Ni, wherein i >=2.
Beneficial effects of the present invention are：
1. optimizing testing process by full-automatic process, reduce the artificial stand-by period, improve the fluency of test,
The simplification for becoming management work, beneficial to realization.
2. for the management and analysis for test data, test data is accurate, truly reflects the reality of product
State, improve data management efficiency.
3. the realization of full-automatic testing, improves efficiency in production, manpower is liberated, has promoted production pipe to a certain extent
Reason and personnel management win-win in pairs, production management work become more procedure, simplification.
Brief description of the drawings
Fig. 1 is the system framework schematic diagram of the present invention；
Fig. 2 is the allomeric function block diagram of test module of the present invention；
Fig. 3 is data sampling test flow chart of the present invention.
Embodiment
With reference to embodiment and accompanying drawing, the invention will be further described.
Referring to figs. 1 to Fig. 3, the invention provides a kind of method of testing of open-loop optical fiber gyro, before test, carries out such as
Lower operation：
Step A：The test pattern of high/low/normal temperature is configured, the temperature for automatically controlling rate table reaches specified
Value, host computer order capture card exports low level during this alternating temperature, power down process is carried out to gyro, when temperature reaches test
It is required that when, host computer order capture card output high level, power supply is operated by power control circuit to gyro power supply, now
Capture card starts to receive gyro output data and carries out display and synchronous preservation；
Step B：Rate table is set in advance as remote control state, the automatic loading speed file of host computer, and speed control
The speed that turntable is pressed in speed file carries out the automatic switchover of certain frequency；
After above-mentioned steps end of operation, following steps are performed
Step 1) gyro output data, and according to corresponding to loading speed document control sampled point rate table rotating speed；
Step 2) capture card is sampled, and its sample frequency carries out smooth one value of output with 3200 points per second；
Step 3) data convert；
Step 4) Data Collection is simultaneously calculated, preserved.
In step 1), if control turntable do not work or its rotating speed be less than setting threshold value when, collection card port output
Low level simultaneously makes signal amplify 100 times of outputs by signal amplification circuit, when its rotating speed is more than or equal to the threshold value of setting, directly
Into step 2).
In step 4), including zero bias/bias repeatability, scale factor, threshold value resolution ratio are calculated successively, the step
16 tunnels are surveyed simultaneously.
Present invention also offers a kind of test system of open-loop optical fiber gyro,
Including rate table, gyro is provided with the rate table, the draw plug on the gyro includes gyro power
Feeder ear and gyro output end, the gyro power feeder ear are connected by power control circuit with power supply, the gyro
Output end is connected by signal amplification circuit with capture card output end, the power control circuit and signal amplification circuit and collection
Card connection, the capture card are connected with middle control host computer；The power control circuit and signal control circuit are respectively connecting to
One power module and second source module；The power control circuit connects respectively with the first power module and gyro power feeder ear
The power on/off for controlling gyro is connect, when capture card exports high level to power control circuit, power control circuit is to gyro
Normal power supply, when capture card exports low level to power control circuit, gyro power-off；The interface and gyro of signal amplification circuit
Output end is connected to control gyro output signals amplification, and when capture card exports high level to power control circuit, gyro is defeated
Output is to capture card after going out 100 times of amplification, and capture card is transmitted to host computer after output signal is handled, when capture card is to power supply
During circuit output low level, gyro output signals, which do not amplify, is directly transferred to capture card, the output signal that capture card will collect
Export to host computer.
The communication module is RS-232C communication units.
The signal amplification circuit includes calculus of differences unit and analog switch module, is set at the analog switch module
There are multiple analog switch Ni, wherein i >=2.
In the present invention,
Described test module is the MFC designs based on Visual Basic 2010.The function of the test module is mainly wrapped
Include main window (selection test subitem), data processing, ancillary equipment Automated condtrol three parts.Its allomeric function block diagram such as Fig. 1
It is shown：
The capture card using 16 channel datas gather simultaneously, therefore takes the mode of multithreading, utilizes mutual exclusion pair
As realizing thread synchronization.Called in each thread function different NI DAQmx api functions etc. be acquired the foundation of task/
Delete, the setting of frequency acquisition, passage, top limit, the way of output.PCI 6220 is applied not only to gather gyro data, also needs
To utilize digital I/O interfaces output low and high level control amplifying circuit and power switch circuit.
Because the test of open-loop optical fiber gyro is exported between 20uV~2V, it is ensured that the zero bias letter of minimum can be collected
Number, it is desirable to resolution ratio of the capture card under ± 2V range must be below 10uV, because PCI6220 ultimate resolution is
61uV, capture card can not meet the small-signal for gathering 20uV or so.Therefore, before the less signal of gyro is gathered, it is necessary to small
Signal is filtered amplification, and signal amplification circuit of the invention mainly realizes this work(using difference amplifier and analog switch
Energy：For example, as 15 ° of turntable speed ＜, gyro output signals are smaller, and signal needs to amplify by operational amplifier, now mould
Intend switch N1 to open, amplified signal output；As 15 ° of turntable speed ＞, output signal is larger directly logical without amplifying circuit
Cross analog switch N2 outputs.
In the present invention, power control circuit is before being connected to the power end of gyro, for controlling gyro to cut-off the electricity of electricity
Road.Wherein, the decision condition of gyro power-off is：(1) gyro power feeder ear current anomaly；(2) when surveying constant multiplier repeatability
Midway is needed to power off.When two conditions have one meet when, gyro automatically powers off.The circuit for completing automatic circuit break function is mainly sharp
With relay and one and gate device.The digital output port of capture card, a termination electric current are terminated with two output ends one of door
The output end of sensor.When gyro power feeder ear end electric current is normal, needs in gyro live testing, the numeral output of capture card
End exports high level with current sensor output, exports high level with door, power end bio-occlusion gyro confession+5V, works as electric current
It is low level with the output of door one end when exception or test process need power-off, exports and disconnected for low level, gyro feeder ear.
During specific works, the test pattern of high/low/normal temperature is configured first, automatically controls the temperature of rate table
Reach designated value.Host computer order capture card exports low level during this alternating temperature, and power down process is carried out to gyro.Work as temperature
When reaching test request, host computer order capture card output high level, started working to gyro normal power supply, now capture card is opened
Begin to receive gyro output data and carry out display and synchronously preserve., will according to the test of actual performance parameter in test process
Ask and turntable is controlled, it is therefore desirable to speed file is loaded before test, turntable is arranged to remote control state.When
When needing the turntable to work, test module works according to RS-232 communications protocol to the turntable control turntable that sends instructions, and according to turntable
Rate value size is judged：When turntable does not work or is worked under smaller speed, capture card output low level control letter
Number amplifying circuit makes gyro primary output signal amplify 100 times to export again；When turntable speed is larger, signal does not amplify directly defeated
Go out.When sampled point reaches specified quantity, packing carries out the calculating of a certain performance parameter, obtains result of calculation, then proceed into
Row data acquisition, sampled point quantity carry out the calculating of next performance indications when reaching certain amount.When a wheel desired value is calculated
Afterwards, converting oven temperature, the switching of high/low/normal temperature is carried out, proceeds by the test under another temperature spot, until high/low/normal
Untill all indexs have been calculated under temperature.
Claims (6)
1. a kind of method of testing of open-loop optical fiber gyro, it is characterised in that before test, proceed as follows：
Step A：The test pattern of high/low/normal temperature is configured, the temperature for automatically controlling rate table reaches designated value,
Host computer order capture card exports low level during this alternating temperature, power down process is carried out to gyro, when temperature reaches test request
When, host computer order capture card output high level, power supply is operated by power control circuit to gyro power supply, is now gathered
Card starts to receive gyro output data and carries out display and synchronously preserve；
Step B：Rate table is set in advance as remote control state, the automatic loading speed file of host computer, and speed control turntable
The automatic switchover of certain frequency is carried out by the speed in speed file；
After above-mentioned steps end of operation, following steps are performed
Step 1) gyro output data, and according to corresponding to loading speed document control sampled point rate table rotating speed；
Step 2) capture card is sampled, and its sample frequency carries out smooth one value of output with 3200 points per second；
Step 3) data convert；
Step 4) Data Collection is simultaneously calculated, preserved.
2. method of testing according to claim 1, it is characterised in that in step 1), if rate table do not work or
When its rotating speed is less than the threshold value of setting, collection card port output low level simultaneously makes signal amplify 100 times by signal amplification circuit
Output, when its rotating speed is more than or equal to the threshold value of setting, it is directly entered step 2).
3. method of testing according to claim 1, it is characterised in that in step 4), including zero bias/bias repeatability,
Scale factor, threshold value resolution ratio are calculated successively, and the step surveys 16 tunnels simultaneously.
A kind of 4. test system of open-loop optical fiber gyro, it is characterised in that
Including rate table, gyro is provided with the rate table, the draw plug on the gyro includes gyro power power supply
End and gyro output end, the gyro power feeder ear are connected by power control circuit with power supply, the gyro output
End is connected by signal amplification circuit with capture card output end, and the power control circuit and signal amplification circuit connect with capture card
Connect, the capture card is connected with middle control host computer；The power control circuit and signal control circuit are respectively connecting to the first electricity
Source module and second source module；The power control circuit is connected use respectively with the first power module and gyro power feeder ear
In the power on/off of control gyro, when capture card exports high level to power control circuit, power control circuit is normal to gyro
Power supply, when capture card exports low level to power control circuit, gyro power-off；The interface of signal amplification circuit exports with gyro
End is connected to control gyro output signals amplification, and when capture card exports high level to power control circuit, gyro output is put
Output is to capture card after big 100 times, and capture card is transmitted to host computer after output signal is handled, when capture card is to power control circuit
When exporting low level, gyro output signals, which do not amplify, is directly transferred to capture card, and capture card exports the output signal collected
To host computer.
5. the test system of open-loop optical fiber gyro according to claim 4, it is characterised in that the communication module is RS-
232C communication units.
6. the test system of open-loop optical fiber gyro according to claim 4, it is characterised in that the signal amplification circuit bag
Calculus of differences unit and analog switch module are included, multiple analog switch Ni, wherein i >=2 are provided with the analog switch module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710744390.7A CN107449445A (en) | 2017-08-25 | 2017-08-25 | The method of testing and test system of a kind of open-loop optical fiber gyro |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186632A (en) * | 2018-08-30 | 2019-01-11 | 衡阳市衡山科学城科技创新研究院有限公司 | A kind of test macro |
| CN109974747A (en) * | 2019-03-21 | 2019-07-05 | 中国船舶重工集团公司第七0七研究所 | A kind of multipath high-speed Data acquisition system of FOG and test macro |
| CN110320935A (en) * | 2018-03-29 | 2019-10-11 | 航天科工惯性技术有限公司 | A kind of turntable remote automatic control method and device |
| CN110440785A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七0七研究所 | A kind of optical fibre gyro Auto-Test System |
| CN111829503A (en) * | 2020-07-10 | 2020-10-27 | 湖南航天机电设备与特种材料研究所 | Method and device for testing threshold value of fiber-optic gyroscope |
| CN112729270A (en) * | 2020-12-11 | 2021-04-30 | 浙江大学 | Turntable calibration device and calibration method based on fiber-optic gyroscope |
| CN113124907A (en) * | 2021-06-18 | 2021-07-16 | 瑞燃(上海)环境工程技术有限公司 | Zero-bias repeatability test method and system for interference type fiber-optic gyroscope |
| CN113514081A (en) * | 2021-06-10 | 2021-10-19 | 北京航天时代光电科技有限公司 | Automatic test system for inertia measurement product |
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2017
- 2017-08-25 CN CN201710744390.7A patent/CN107449445A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320935A (en) * | 2018-03-29 | 2019-10-11 | 航天科工惯性技术有限公司 | A kind of turntable remote automatic control method and device |
| CN110320935B (en) * | 2018-03-29 | 2022-03-22 | 航天科工惯性技术有限公司 | Remote automatic control method and device for rotary table |
| CN109186632A (en) * | 2018-08-30 | 2019-01-11 | 衡阳市衡山科学城科技创新研究院有限公司 | A kind of test macro |
| CN109974747A (en) * | 2019-03-21 | 2019-07-05 | 中国船舶重工集团公司第七0七研究所 | A kind of multipath high-speed Data acquisition system of FOG and test macro |
| CN110440785A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七0七研究所 | A kind of optical fibre gyro Auto-Test System |
| CN111829503A (en) * | 2020-07-10 | 2020-10-27 | 湖南航天机电设备与特种材料研究所 | Method and device for testing threshold value of fiber-optic gyroscope |
| CN111829503B (en) * | 2020-07-10 | 2022-10-18 | 湖南航天机电设备与特种材料研究所 | Method and device for testing threshold value of fiber-optic gyroscope |
| CN112729270A (en) * | 2020-12-11 | 2021-04-30 | 浙江大学 | Turntable calibration device and calibration method based on fiber-optic gyroscope |
| CN112729270B (en) * | 2020-12-11 | 2023-03-07 | 浙江大学 | Turntable calibration device and calibration method based on fiber-optic gyroscope |
| CN113514081A (en) * | 2021-06-10 | 2021-10-19 | 北京航天时代光电科技有限公司 | Automatic test system for inertia measurement product |
| CN113514081B (en) * | 2021-06-10 | 2023-11-10 | 北京航天时代光电科技有限公司 | Automatic test system for inertial measurement product |
| CN113124907A (en) * | 2021-06-18 | 2021-07-16 | 瑞燃(上海)环境工程技术有限公司 | Zero-bias repeatability test method and system for interference type fiber-optic gyroscope |
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Application publication date: 20171208 |
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