CN108036872A - A kind of multi-channel high-accuracy temperature acquisition method - Google Patents
A kind of multi-channel high-accuracy temperature acquisition method Download PDFInfo
- Publication number
- CN108036872A CN108036872A CN201711186788.XA CN201711186788A CN108036872A CN 108036872 A CN108036872 A CN 108036872A CN 201711186788 A CN201711186788 A CN 201711186788A CN 108036872 A CN108036872 A CN 108036872A
- Authority
- CN
- China
- Prior art keywords
- temperature
- signal
- data
- navigation system
- fpga
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
Abstract
A kind of multi-channel high-accuracy temperature acquisition method of the present invention belongs to missile-borne computer analog acquisition process field.In strapdown inertial navigation system, the change of temperature can reduce optical fibre gyroscope output accuracy." constant temperature " environment must be provided, there is provided the environment of " constant temperature " needs to detect current environment temperature.The temperature simulation amount acquisition method currently taken is to carry out temperature acquisition to single point；ADC acquisition controllers are DSP or microcontroller, and real-time is poor；Temperature data transport protocol is relatively simple, and when data are transmitted in rugged environment, data skew can occur.The present invention tested in certain type missile-borne strapdown inertial navigation system, can real-time, the high-precision temperature to strapdown inertial navigation system be acquired and export, it is mature and stable, achieve good effect.
Description
Technical field
A kind of multi-channel high-accuracy temperature acquisition method of the present invention belongs to missile-borne computer analog acquisition process field.
Background technology
In strapdown inertial navigation system, form that the core component of fibre optic gyroscope is temperature sensitive, the change of temperature can make
Optical fibre gyro produces reciprocity effect, so as to reduce optical fibre gyroscope output accuracy.In order to solve the influence of temperature on fiber gyro,
" constant temperature " environment must be provided, there is provided the environment of " constant temperature " just needs to detect current environment temperature, currently takes
Temperature acquisition method is that single point or several especially limited click-through trip temperatures are gathered；ADC acquisition controllers for DSP or
Person's microcontroller, real-time are poor；Temperature data transport protocol is relatively simple, when data are transmitted in rugged environment, can occur
Data skew.
In view of the above-mentioned problems, proposing multichannel (collection point is up to 16), real-time is (using based on FLASH techniques
FPGA is controlled with calculating) high, high accuracy (precision is up to 0.05 degree) temperature acquisition and reliable transmission method.
The content of the invention
The purpose of the present invention：In view of the above-mentioned problems, proposing multichannel (collection point is up to 15), real-time (uses base
It is acquired in the FPGA of FLASH techniques) high, high accuracy (precision is up to 0.05 degree) temperature acquisition method.
Technical scheme：
A kind of multi-channel high-accuracy temperature acquisition method, this method are applied in strapdown inertial navigation system, the method
Take following steps：
1) operation amplifier is passed through to strapdown inertial navigation system input temp analog quantity small-signal, temperature simulation amount small-signal
Device is amplified, and amplified signal filters to obtain temperature modulus signal by passive low ventilating filter；
2) the temperature modulus signal after step 1 is handled is input to multiway analog switch selector；Multiway analog switch selects
Select the control signal of device and enable signal is respectively connected to be controlled into FPGA；
3) output terminal of multiway analog switch selector is connected with the input terminal of follower；Follower output terminal is linked into AD
The input terminal of conversion chip；The control signal and data-signal of AD conversion chip, which are linked into FPGA, to be controlled and gathers；
4) FPGA controls multiway analog switch selector to gate temperature modulus signal successively；And AD conversion chip is controlled to carry out
Temperature modulus signal is changed；
5) least square fitting algorithm is used into line number in FPGA by the transformed temperature information of AD conversion chip
According to precision handle；
6) temperature information after the processing of step 5 precision is sent to strapdown inertial navigation system by serial line interface to navigate
Computer module.
FPGA is realized using the low-power consumption programmable gate array based on FLASH techniques.
Temperature data information is encoded using Manchester's code mode.
On logical design is sent, using redundant transmission, and data transfer is staggered in time, is avoided exterior dry
Disturb the signal distortion caused in synchronization on data transmission channel.
Advantages of the present invention：
1st, FPGA is realized using the low-power consumption programmable gate array based on FLASH techniques；Its is low in energy consumption, loading velocity
Block, can be high in the temperature information in powering on 25ms and can collecting Strapdown Inertial Navigation System, picking rate block, real-time；
2nd, this method realizes the precision processing of data using fuzzy control (IFC) algorithm, and algorithm is all with real by FPGA
Existing, processing speed block, precision is high, can be to 0.05 DEG C；
3rd, temperature data information is encoded using Manchester's code mode, since its stability and synchronism are wide
General to be applied in communication, very big improves transmission reliability；
4th, on logical design is sent, using redundant transmission, A, channel B independently of each other and data transfer in time into
Go and staggered, avoided external disturbance from causing A in synchronization, signal distortion in channel B, it is reliable further to improve transmission
Property, ensure this method can be used under conditions of exceedingly odious.
Brief description of the drawings
Fig. 1 multi-channel high-accuracy temperature simulation amount acquisition method schematic block diagrams.
Embodiment
A kind of multi-channel high-accuracy temperature acquisition method, this method are applied in strapdown inertial navigation system, the method
Take following steps：
1) operation amplifier is passed through to strapdown inertial navigation system input temp analog quantity small-signal, temperature simulation amount small-signal
Device is amplified, and amplified signal filters to obtain temperature modulus signal by passive low ventilating filter；
2) the temperature modulus signal after step 1 is handled is input to multiway analog switch selector；Multiway analog switch selects
Select the control signal of device and enable signal is respectively connected to be controlled into FPGA；
3) output terminal of multiway analog switch selector is connected with the input terminal of follower；Follower output terminal is linked into AD
The input terminal of conversion chip；The control signal and data-signal of AD conversion chip, which are linked into FPGA, to be controlled and gathers；
4) FPGA controls multiway analog switch selector to gate temperature modulus signal successively；And AD conversion chip is controlled to carry out
Temperature modulus signal is changed；
5) least square fitting algorithm is used into line number in FPGA by the transformed temperature information of AD conversion chip
According to precision handle；
6) temperature information after the processing of step 5 precision is sent to strapdown inertial navigation system by serial line interface to navigate
Computer module.
FPGA is realized using the low-power consumption programmable gate array based on FLASH techniques.
Temperature data information is encoded using Manchester's code mode.
On logical design is sent, using redundant transmission, and data transfer is staggered in time, is avoided exterior dry
Disturb the signal distortion caused in synchronization on data transmission channel.
Below in conjunction with Fig. 1, the solution of the present invention is described in further detail.
1. multi way temperature analog quantity small-signal, signal condition and enhanced processing are done before multi-channel analog selector is entered, believe
Number opsonic action is mainly to realize the effect of low-pass filter；The effect of signal amplification mainly improves transmission range and anti-interference
Property；
2. when supply voltage is ± 15V, conducting resistance is 200 Europe because of multi-channel analog selector, influence to gather conversion signal
Precision, a/d converter front end adds follower, because operational amplifier has very big input impedance, and very low output impedance
To drive the input terminal of a/d converter；
3. the control of ADC chips is realized using the low-power consumption programmable gate array (FPGA) based on FLASH techniques
With the collection of analog quantity；Acquisition interface can be concurrently or sequentially interface (such as SPI interface)；
4. the control of multi-path choice is realized using the low-power consumption programmable gate array (FPGA) based on FLASH techniques
Instrument, the control of ADC chips and the collection of analog quantity are controlled with enable signal；Acquisition interface can be concurrently or sequentially interface
(such as SPI interface)；
5. pair multi way temperature analog quantity realizes the precision processing of data using fuzzy control (IFC) algorithm；
6. being encoded using Manchester's code mode to transmission data, the data after coding use two passages of A, B
It is transmitted；On logical design is sent, A, channel B are independently of each other and data transfer is staggered in time, avoid outer
Portion's interference causes A in synchronization, signal distortion in channel B, further improves transmission reliability, ensures that this method can be
It is extremely short it is severe under conditions of use.
The present invention is tested in certain type missile-borne strapdown inertial navigation system, can be real-time, high-precision to victory
The temperature of inertial navigation system is acquired and exports, mature and stable, achieves good effect.
Claims (4)
1. a kind of multi-channel high-accuracy temperature acquisition method, this method are applied in strapdown inertial navigation system, it is characterised in that：
The method takes following steps：
1) to strapdown inertial navigation system input temp analog quantity small-signal, temperature simulation amount small-signal by operational amplifier into
Row amplification, amplified signal filter to obtain temperature modulus signal by passive low ventilating filter；
2) the temperature modulus signal after step 1 is handled is input to multiway analog switch selector；Multiway analog switch selector
Control signal and enable signal be respectively connected to be controlled into FPGA；
3) output terminal of multiway analog switch selector is connected with the input terminal of follower；Follower output terminal is linked into AD conversion
The input terminal of chip；The control signal and data-signal of AD conversion chip, which are linked into FPGA, to be controlled and gathers；
4) FPGA controls multiway analog switch selector to gate temperature modulus signal successively；And AD conversion chip is controlled into trip temperature
Modulus signal is changed；
5) data are carried out using least square fitting algorithm in FPGA by the transformed temperature information of AD conversion chip
Precision processing；
6) temperature information after the processing of step 5 precision is sent to strapdown inertial navigation system navigation by serial line interface to calculate
Machine module.
2. a kind of multi-channel high-accuracy temperature acquisition method according to claim 1, it is characterised in that FPGA is used and is based on
The low-power consumption programmable gate array of FLASH techniques is realized.
3. a kind of multi-channel high-accuracy temperature acquisition method according to claim 1, it is characterised in that using Manchester
Coding mode encodes temperature data information.
4. a kind of multi-channel high-accuracy temperature acquisition method according to claim 1, it is characterised in that set sending logic
On meter, using redundant transmission, and data transfer is staggered in time, avoids external disturbance from causing data in synchronization
Signal distortion in transmission channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711186788.XA CN108036872A (en) | 2017-11-23 | 2017-11-23 | A kind of multi-channel high-accuracy temperature acquisition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711186788.XA CN108036872A (en) | 2017-11-23 | 2017-11-23 | A kind of multi-channel high-accuracy temperature acquisition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108036872A true CN108036872A (en) | 2018-05-15 |
Family
ID=62094230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711186788.XA Pending CN108036872A (en) | 2017-11-23 | 2017-11-23 | A kind of multi-channel high-accuracy temperature acquisition method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108036872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489853A (en) * | 2018-12-21 | 2019-03-19 | 中国船舶重工集团公司第七0七研究所 | High-precision multi-path platinum resistor temperature measuring module and method based on constant-current source |
| CN109990920A (en) * | 2019-04-17 | 2019-07-09 | 中国科学院新疆理化技术研究所 | A method of in nuclear radiation environment test testing temperature information |
| CN110147219A (en) * | 2019-05-09 | 2019-08-20 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of hardware-accelerated method |
| CN110907050A (en) * | 2019-12-06 | 2020-03-24 | 天津瑞能电气有限公司 | Temperature measuring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158856A (en) * | 2007-12-17 | 2008-04-09 | 江苏金智科技股份有限公司 | Multi-channel serial analog serial-to-parallel processing equipment and method thereof |
| US20080117078A1 (en) * | 2006-11-17 | 2008-05-22 | Hon Hai Precision Industry Co., Ltd. | Multi-channel signal monitoring circuit |
| CN101908885A (en) * | 2010-06-30 | 2010-12-08 | 大连理工大学 | Dual-MCU control multichannel high speed analog signal collector |
| CN104062937A (en) * | 2014-07-09 | 2014-09-24 | 哈尔滨诺信科技有限公司 | Sixty-four-way low-speed high-precision analog acquisition realizing method |
| CN106292391A (en) * | 2015-05-14 | 2017-01-04 | 童培全 | Multichannel data acquisition system |
| CN106444505A (en) * | 2015-10-14 | 2017-02-22 | 北京信息科技大学 | Multichannel synchronizing signal collection system |
| CN106595892A (en) * | 2016-12-16 | 2017-04-26 | 陕西电器研究所 | Multichannel integrated temperature converter |
-
2017
- 2017-11-23 CN CN201711186788.XA patent/CN108036872A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080117078A1 (en) * | 2006-11-17 | 2008-05-22 | Hon Hai Precision Industry Co., Ltd. | Multi-channel signal monitoring circuit |
| CN101158856A (en) * | 2007-12-17 | 2008-04-09 | 江苏金智科技股份有限公司 | Multi-channel serial analog serial-to-parallel processing equipment and method thereof |
| CN101908885A (en) * | 2010-06-30 | 2010-12-08 | 大连理工大学 | Dual-MCU control multichannel high speed analog signal collector |
| CN104062937A (en) * | 2014-07-09 | 2014-09-24 | 哈尔滨诺信科技有限公司 | Sixty-four-way low-speed high-precision analog acquisition realizing method |
| CN106292391A (en) * | 2015-05-14 | 2017-01-04 | 童培全 | Multichannel data acquisition system |
| CN106444505A (en) * | 2015-10-14 | 2017-02-22 | 北京信息科技大学 | Multichannel synchronizing signal collection system |
| CN106595892A (en) * | 2016-12-16 | 2017-04-26 | 陕西电器研究所 | Multichannel integrated temperature converter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489853A (en) * | 2018-12-21 | 2019-03-19 | 中国船舶重工集团公司第七0七研究所 | High-precision multi-path platinum resistor temperature measuring module and method based on constant-current source |
| CN109489853B (en) * | 2018-12-21 | 2020-11-10 | 中国船舶重工集团公司第七0七研究所 | High-precision multichannel platinum resistor temperature measurement module and method based on constant current source |
| CN109990920A (en) * | 2019-04-17 | 2019-07-09 | 中国科学院新疆理化技术研究所 | A method of in nuclear radiation environment test testing temperature information |
| CN110147219A (en) * | 2019-05-09 | 2019-08-20 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of hardware-accelerated method |
| CN110147219B (en) * | 2019-05-09 | 2023-04-07 | 中国航空工业集团公司西安航空计算技术研究所 | Hardware acceleration method |
| CN110907050A (en) * | 2019-12-06 | 2020-03-24 | 天津瑞能电气有限公司 | Temperature measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108036872A (en) | A kind of multi-channel high-accuracy temperature acquisition method | |
| CN107167174B (en) | Distributed type minisize data collecting system | |
| CN103870609B (en) | Multichannel universal data collection card and its application based on FPGA | |
| CN102707653B (en) | High precision intelligent gain multipath data collecting system | |
| CN102619501B (en) | A kind of data transmission system in oil logging tool | |
| CN205209651U (en) | Distributed temperature measurement module, distributed temperature measurement system | |
| CN106292409B (en) | Real-time simulation system based on FPGA multi-rate optical fiber communication and simulation method thereof | |
| CN102692883A (en) | An analog input circuit for engineering-machinery-dedicated controller | |
| CN101957806A (en) | Peripheral component interconnection standard acquisition device for synchronous serial interface signal | |
| CN208922244U (en) | A kind of high-speed serial bus suitable for high-performance SOC chip unstrings IP kernel | |
| CN103972909A (en) | TSC (thyristor switched capacitor) system and RS485 communication method thereof based on FPGA (Field Programmable Gate Array) | |
| CN104868953B (en) | A kind of expansible multichannel serial optical transmitter and receiver based on FPGA | |
| CN213363816U (en) | Multi-protocol compatible angle acquisition system | |
| CN206461608U (en) | Transceiver based on ethernet physical layer chip rate continuous variable | |
| CN104950773B (en) | Mixed type intelligent data acquisition processing unit | |
| CN206907016U (en) | A kind of high speed real-time data acquisition system | |
| CN108132636A (en) | Based on monolithic processor controlled multi-channel data acquisition processing system | |
| CN201302717Y (en) | High precision sensor signal collector | |
| CN205249175U (en) | Sampling circuit is kept apart to difference | |
| CN105892353B (en) | A kind of aircraft data collecting transmitter | |
| CN205594424U (en) | Numerical control apparatus | |
| CN106357502A (en) | Multi-channel collecting and editing transmitting system | |
| CN105783903A (en) | Fiber-optic gyroscope data acquisition system based on USB | |
| CN101692606A (en) | Serial A/D converter circuit shared by two singlechips | |
| CN201072363Y (en) | Electropositive potential temperature measuring equipment of high voltage thyristor valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180515 |
|
| RJ01 | Rejection of invention patent application after publication |