CN203848843U - Remote testing device for optical fiber gyroscope - Google Patents
Remote testing device for optical fiber gyroscope Download PDFInfo
- Publication number
- CN203848843U CN203848843U CN201420270168.XU CN201420270168U CN203848843U CN 203848843 U CN203848843 U CN 203848843U CN 201420270168 U CN201420270168 U CN 201420270168U CN 203848843 U CN203848843 U CN 203848843U
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- Prior art keywords
- microcontroller
- transmitter
- receiver
- optical fiber
- proving installation
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Gyroscopes (AREA)
Abstract
The utility model is applicable to the field of tests of an optical fiber gyroscope, and provides a remote testing device for an optical fiber gyroscope. The remote testing device for the optical fiber gyroscope comprises an RS-485 transmitter for converting a logic pulse signal into a differential signal, an RS-485 receiver, a microcontroller and an RS-232 transmitter, wherein the RS-485 receiver is connected with the transmitter and used for converting the differential signal into the logic pulse signal; the microcontroller is connected with the receiver and used for counting the logic pulse signal and outputting the unit time count value in a serial data format; the RS-232 transmitter is connected with the microcontroller and transmits an optical fiber gyroscope output signal of the unit time to a universal computer to process. By adopting the remote testing device for the optical fiber gyroscope provided by the utility model, the pulse count output optical fiber gyroscope of which the maximal output frequency is 10MHz can be tested, the maximal distance between the optical fiber gyroscope and the testing device can be up to 20m, and the remote testing device is applicable to a remote test on the optical fiber gyroscopes in various experiments.
Description
Technical field
The utility model belongs to optical fibre gyro field tests, more specifically, relates to a kind of optical fibre gyro remote test device.
Background technology
Optical fibre gyro is a kind of Fibre Optical Sensor to angular velocity information sensitivity, and the output of optical fibre gyro has several modes such as analog quantity, umber of pulse, digital serial.
The test of number of pulses output optical fibre gyro, prior art is that the output pulse of optical fibre gyro is directly connected to Special pulse numbered card, and step-by-step counting card inserts in the expansion slot of industrial computer, and industrial computer software reads step-by-step counting card data and processes.Fig. 1 is its theory diagram.
Existing measuring technology is exported connection count card because of direct by the pulse of optical fibre gyro, the maximum 2MHz of its test frequency, and optical fibre gyro is to the maximum 2m of distance of proving installation.Along with the raising of optical fibre gyro precision, the corresponding raising of Novel optical fiber gyro output pulse frequency, output frequency is more than 4MHz, when optical fibre gyro carries out environmental test in addition, more than optical fibre gyro can reach 5m to the distance of proving installation.Existing measuring technology cannot complete the remote testing needs of novel high speed umber of pulse output optical fibre gyro.
Utility model content
The purpose of this utility model is to provide a kind of high-speed pulse to count the remote test device of output optical fibre gyro, cannot adapt to high output pulse frequency and the measuring distance problem far away of optical fibre gyro to solve prior art.
The utility model provides a kind of optical fibre gyro remote test device, comprising:
For being connected with optical fibre gyro, logic pulse signal is converted to the RS-485 transmitter of balanced differential signal;
Be connected with RS-485 transmitter, for the RS-485 receiver of receiving balance differential signal, and described balanced differential signal is converted to logic pulse signal sends to microcontroller;
Be connected with RS-485 receiver, for the microcontroller that logic pulse signal is counted and the count value of unit interval is exported with serial data format;
And input end is connected with described microcontroller, output terminal is used with industrial computer and is connected, for serial data being sent to the RS-232 transmitter of industrial computer.
Further, described microcontroller comprises counter and UART Universal Asynchronous Receiver Transmitter (UART, Universal Asynchronous Receiver/Transmitter) serial line interface, described counter is for described logic pulse signal is counted to get to unit interval counted number of pulses, and described UART serial line interface is for sending to described RS-232 transmitter by described unit interval counted number of pulses.
Further, described microcontroller adopts STM32F373 chip, and the input end of the logic pulse signal that the 39th pin of microcontroller is exported as RS-485 receiver 22, is connected internally to the built-in counter of microcontroller; Microcontroller is exported from the 28th pin the count value of unit interval with serial data format, be connected to RS-232 transmitter.
Further, described RS-485 transmitter and described RS-485 receiver adopt SP3490 chip.
Further, between described RS-485 transmitter and RS-485 receiver, be connected by twisted-pair feeder.
Further, between twisted-pair feeder two lines near RS-485 receiver one end, be connected with resistor, for absorbing reflected signal at receiving end, make the transmission of balanced differential signal reliable and stable.
Further, described RS-232 transmitter 24 adopts SP3232 chip, is sent to industrial computer and processes for the described serial data of microcontroller output being converted to rs-232 standard signal.
The umber of pulse output optical fibre gyro remote test device that the utility model provides, the optical fibre gyro that can be 10MHz to maximum output frequency is tested, and the ultimate range of optical fibre gyro and proving installation can reach 20m, be applicable to need optical fibre gyro to carry out the occasion of remote testing in various tests.
Brief description of the drawings
Fig. 1 is the theory diagram of the umber of pulse output optical fibre gyro test device that provides of prior art;
Fig. 2 is that the high-speed pulse that the utility model provides is counted the theory diagram of output optical fibre gyro remote test device;
Fig. 3 is that the high-speed pulse that the utility model provides is counted the circuit diagram of output optical fibre gyro remote test device.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.In addition,, in each embodiment of described the utility model, involved technical characterictic just can combine mutually as long as do not form each other conflict.
The optical fibre gyro remote test device that the utility model provides adopts the technology such as difference balance transmission, microcontroller, has realized the remote testing of high-speed pulse being counted to output optical fibre gyro, full test frequency 10MHz, farthest measuring distance 20m.
Fig. 2 shows the optical fibre gyro remote-control device structure that the utility model provides, and for convenience of explanation, only shows the part relevant to the utility model.
Optical fibre gyro remote test device 2 comprises: be connected with optical fibre gyro 1, for logic pulse signal being converted to the RS-485 transmitter 21 of balanced differential signal; Be connected with RS-485 transmitter 21, for the RS-485 receiver 22 of receiving balance differential signal; Be connected with RS-485 receiver 22, for logic pulse signal is counted and the microcontroller 23 with serial data format output by the count value of unit interval; And input end is connected with described microcontroller 23, and output terminal is connected with industrial computer 3, for serial data being sent to the RS-232 transmitter 24 of industrial computer 3.
Further, described microcontroller 23 comprises counter and UART serial line interface, described counter is for described logic pulse signal is counted to get to unit interval counted number of pulses, and described UART serial line interface is for sending to described RS-232 transmitter 24 by described unit interval counted number of pulses.
Fig. 3 shows the schematic diagram of a kind of concrete implementing circuit of the optical fibre gyro remote test device that the utility model provides, and specifically describes as follows:
RS-485 transmitter 21 adopts SP3490 (D1 chip), and the logic pulse signal that optical fibre gyro 1 is exported is converted to balanced differential signal and transmits, to reach the object of remote transmission.
RS-485 receiver 22 adopts SP3490 (D2 chip), and the balanced differential signal that RS-485 transmitter is sent is converted to logic pulse signal, sends microcontroller to and counts.
Between D1 and D2, adopt twisted-pair feeder to be connected, maximum length 20m.Between twisted-pair feeder two lines near RS-485 receiver 22 one end, be connected with resistor R1, resistor R1, for absorbing reflected signal at receiving end, makes the transmission of balanced differential signal reliable and stable.
Microcontroller 23 adopts STM32F373 (D3 chip), can design as required corresponding peripheral circuit; The input end of the logic pulse signal that the 39th pin of microcontroller chip D3 is exported as RS-485 receiver 22, is connected internally to the built-in counter of microcontroller; Microcontroller chip D3 exports from the 28th pin the count value of unit interval with serial data format, be connected to RS-232 transmitter.
RS-232 transmitter 24 adopts SP3232 (D4 chip), the described serial data of microcontroller output is converted to rs-232 standard signal and is sent to industrial computer and processes.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. an optical fibre gyro remote test device, is characterized in that, described proving installation comprises:
For being connected with optical fibre gyro, logic pulse signal is converted to the RS-485 transmitter of balanced differential signal;
Be connected with RS-485 transmitter, for the RS-485 receiver of receiving balance differential signal, and described balanced differential signal is converted to logic pulse signal sends to microcontroller;
Be connected with RS-485 receiver, for logic pulse signal is counted and the microcontroller with serial data format output by the count value of unit interval;
And input end is connected with described microcontroller, output terminal is used with industrial computer and is connected, for serial data being sent to the RS-232 transmitter of industrial computer.
2. proving installation as claimed in claim 1, it is characterized in that, described microcontroller comprises counter and UART serial line interface, described counter is for described logic pulse signal is counted to get to unit interval counted number of pulses, and described UART serial line interface is for sending to described RS-232 transmitter by described unit interval counted number of pulses.
3. proving installation as claimed in claim 2, it is characterized in that, described microcontroller adopts STM32F373 chip, and the 39th pin of microcontroller, as the input end of the logic pulse signal of RS-485 receiver output, is connected internally to the built-in counter of microcontroller; Microcontroller is exported from the 28th pin the count value of unit interval with serial data format, be connected to RS-232 transmitter.
4. proving installation as claimed in claim 1, is characterized in that, described RS-485 transmitter and described RS-485 receiver adopt SP3490 chip.
5. the proving installation as described in claim 1 to 4 any one, is characterized in that, between described RS-485 transmitter and RS-485 receiver, is connected by twisted-pair feeder.
6. proving installation as claimed in claim 5, is characterized in that, between twisted-pair feeder two lines near RS-485 receiver one end, is connected with resistor, for absorbing reflected signal at receiving end, makes the transmission of balanced differential signal reliable and stable.
7. proving installation as claimed in claim 1, is characterized in that, described RS-232 transmitter adopts SP3232 chip, is sent to industrial computer and processes for the described serial data of microcontroller output being converted to rs-232 standard signal.
8. proving installation as claimed in claim 5, is characterized in that, the maximum length of described twisted-pair feeder is 20m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270168.XU CN203848843U (en) | 2014-05-23 | 2014-05-23 | Remote testing device for optical fiber gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270168.XU CN203848843U (en) | 2014-05-23 | 2014-05-23 | Remote testing device for optical fiber gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203848843U true CN203848843U (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270168.XU Expired - Lifetime CN203848843U (en) | 2014-05-23 | 2014-05-23 | Remote testing device for optical fiber gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203848843U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271889A (en) * | 2017-08-18 | 2017-10-20 | 苏州佳风网络科技有限公司 | A kind of remote control test board electrifying device |
| CN111189473A (en) * | 2020-01-08 | 2020-05-22 | 湖北三江航天红峰控制有限公司 | Heading and attitude system gyro error compensation method based on magnetic sensor and additional meter |
| CN111238463A (en) * | 2020-01-19 | 2020-06-05 | 湖北三江航天红峰控制有限公司 | Modulation method and device based on random sequence digital closed-loop fiber optic gyroscope |
-
2014
- 2014-05-23 CN CN201420270168.XU patent/CN203848843U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271889A (en) * | 2017-08-18 | 2017-10-20 | 苏州佳风网络科技有限公司 | A kind of remote control test board electrifying device |
| CN111189473A (en) * | 2020-01-08 | 2020-05-22 | 湖北三江航天红峰控制有限公司 | Heading and attitude system gyro error compensation method based on magnetic sensor and additional meter |
| CN111238463A (en) * | 2020-01-19 | 2020-06-05 | 湖北三江航天红峰控制有限公司 | Modulation method and device based on random sequence digital closed-loop fiber optic gyroscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |