CN102944688A - Temperature compensation and time drift correction device and method for acceleration sensor - Google Patents
Temperature compensation and time drift correction device and method for acceleration sensor Download PDFInfo
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- CN102944688A CN102944688A CN2012104612737A CN201210461273A CN102944688A CN 102944688 A CN102944688 A CN 102944688A CN 2012104612737 A CN2012104612737 A CN 2012104612737A CN 201210461273 A CN201210461273 A CN 201210461273A CN 102944688 A CN102944688 A CN 102944688A
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Abstract
The invention provides a temperature compensation and time drift correction device and a method for an acceleration sensor. The device comprises a temperature sensor for detecting ambient temperature of an acceleration sensor, a processor for calculating the change of the output quantity of the acceleration sensor along temperature and performing temperature compensation on the output quantity of the acceleration sensor, a memory for storing data, and an input module for manually modifying the drift correction parameter, wherein the temperature sensor is connected with the processor through an AD (analogue/digital) input port; the input module and the memory are respectively connected with I/O (input/output) ports of the processor; and the processor is connected with the acceleration sensor to be compensated. According to the device and method provided by the invention, the temperature compensation equation with high accuracy and good university can be conveniently found through the average fit coefficients of the output measure temperature changes of the acceleration sensor under different acceleration speed states, thus, the problem of temperature compensation for the acceleration sensor is solved.
Description
Technical field
The invention belongs to electron device and manufacture field, be specifically related to a kind of acceleration transducer temperature compensation and the time float correcting device.
Background technology
The temperature drift phenomenon of sensor is the inherent characteristic of sensor; The temperature drift meeting more or less impacts Sensor Output Characteristic.
Domestic existing sensor adopts mimic channel to compensate the sensor temperature drift effect more.This is that a kind of employing warm argument part contrary with the sensor temperature drift direction eliminated the control method that temperature is floated effect.
There is certain problem in the mimic channel compensation method in the sensor production use procedure: the one, and the work of compensating circuit adjustment coupling is very meticulous, it in the sensor production process, is the output accuracy that guarantees sensor, need, through a large amount of debugging and test job, cause its production cycle relatively long; The 2nd, its compensation adjustment circuit floats effect in the time of also can producing along with the passing of service time, causes sensor accuracy to reduce, and is unfavorable for the accuracy guarantee of product in line using.
At present domestic also have the way that adopts design and obtain effect preferably sensor.Conventional method is the output valve in each temperature range, each test mode by survey sensor, simulates the temperature characterisitic equation of sensor, reaches the purpose of temperature compensation.But this temperature compensation can not well be useful in the acceleration transducer temperature compensation, its main cause temperature range span large (55
.c to 70
.c), can't accomplish accurately to simulate each accekeration at each probe temperature point.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of acceleration transducer temperature compensation and the time float correcting device and method, preferably resolve the problem of acceleration transducer temperature compensation.
The present invention solves the problems of the technologies described above taked technical scheme to be: a kind of acceleration transducer temperature compensation and the time float correcting device, it is characterized in that: it comprise for detection of the temperature sensor of acceleration transducer environment temperature, for calculate acceleration transducer output quantity variation with temperature and to the acceleration transducer output quantity carry out the processor of temperature compensation, for the storer of storing data and for the load module of manual modification drift correction parameter; Wherein temperature sensor is connected with processor by the AD input port, and load module is connected with the I/O mouth of processor respectively with storer, and processor is connected with acceleration transducer to be compensated.
Press such scheme, described processor is connected with computing machine or mobile terminal by communication module.
A kind of acceleration transducer temperature compensation and the time float modification method, it is characterized in that: it comprises the following steps:
In the environment that is aG, bG, cG at acceleration, by high-low temperature chamber analog acceleration sensor environment for use temperature variation; A, b, c are real number, and G is acceleration of gravity;
When degree of will speed up is aG, bG, cG, each temperature spot overload output quantity is recorded respectively, by the method for curve, finds out respectively aG, bG, cG temperature-acceleration change curve, obtains the Mean curve coefficient;
The Mean curve coefficient is write to the temperature compensation equation, for the temperature compensation of acceleration transducer;
At set intervals the drift correction parameter is carried out to manual modification.
Preferably, described a gets 0, b and gets 1, c and get-1.
Beneficial effect of the present invention is:
1, employing the present invention can be in natural gravity state environment, by acceleration transducer output value temperature variation average fit coefficient under different acceleration condition, find out very easily that precision is higher, versatility temperature compensation equation preferably, solve the problem of acceleration transducer temperature compensation.
2,, after acceleration transducer works long hours, the output data may be drifted about, and can manually change drift correction parameter in storer by computing machine or input media, and acceleration transducer is carried out to drift correction.
The accompanying drawing explanation
The structured flowchart that Fig. 1 is one embodiment of the invention.
Embodiment
The structured flowchart that Fig. 1 is one embodiment of the invention, the acceleration transducer temperature compensation and the time float correcting device comprise temperature sensor for detection of the acceleration transducer environment temperature, for calculate acceleration transducer output quantity variation with temperature and to the acceleration transducer output quantity carry out the processor of temperature compensation, for the storer of storing data and for the load module of manual modification drift correction parameter; Wherein temperature sensor is connected with processor by the AD input port, and load module is connected with the I/O mouth of processor respectively with storer, and processor is connected with acceleration transducer to be compensated.Processor is connected with computing machine or mobile terminal by communication module, for manual modification drift correction parameter.
Based on above-mentioned acceleration transducer temperature compensation and the time float temperature compensation that correcting device realizes and the time float modification method and comprise the following steps: at acceleration, be that aG, bG, cG(a, b, c are real number, G is acceleration of gravity, in the present embodiment, a gets 0, b gets 1, c gets-1) environment in, by high-low temperature chamber analog acceleration sensor environment for use temperature variation; When degree of will speed up is aG, bG, cG, each temperature spot overload output quantity is recorded respectively, by the method for curve, finds out respectively aG, bG, cG temperature-acceleration change curve, obtains the Mean curve coefficient; The Mean curve coefficient is write to the temperature compensation equation, for the temperature compensation of acceleration transducer; At set intervals the drift correction parameter is carried out to manual modification.
Claims (4)
- An acceleration transducer temperature compensation and the time float correcting device, it is characterized in that: it comprise for detection of the temperature sensor of acceleration transducer environment temperature, for calculate acceleration transducer output quantity variation with temperature and to the acceleration transducer output quantity carry out the processor of temperature compensation, for the storer of storing data and for the load module of manual modification drift correction parameter; Wherein temperature sensor is connected with processor by the AD input port, and load module is connected with the I/O mouth of processor respectively with storer, and processor is connected with acceleration transducer to be compensated.
- Acceleration transducer temperature compensation according to claim 1 and the time float correcting device, it is characterized in that: described processor is connected with computing machine or mobile terminal by communication module.
- One kind based on the described acceleration transducer temperature compensation of claim 1 or 2 and the time float temperature compensation that correcting device realizes and the time float modification method, it is characterized in that: it comprises the following steps:In the environment that is aG, bG, cG at acceleration, by high-low temperature chamber analog acceleration sensor environment for use temperature variation; A, b, c are real number, and G is acceleration of gravity;When degree of will speed up is aG, bG, cG, each temperature spot overload output quantity is recorded respectively, by the method for curve, finds out respectively aG, bG, cG temperature-acceleration change curve, obtains the Mean curve coefficient;The Mean curve coefficient is write to the temperature compensation equation, for the temperature compensation of acceleration transducer;At set intervals the drift correction parameter is carried out to manual modification.
- Temperature compensation according to claim 3 and the time float modification method, it is characterized in that: described a gets 0, b and gets 1, c and get-1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104612737A CN102944688A (en) | 2012-11-16 | 2012-11-16 | Temperature compensation and time drift correction device and method for acceleration sensor |
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| CN2012104612737A CN102944688A (en) | 2012-11-16 | 2012-11-16 | Temperature compensation and time drift correction device and method for acceleration sensor |
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| CN2012104612737A Pending CN102944688A (en) | 2012-11-16 | 2012-11-16 | Temperature compensation and time drift correction device and method for acceleration sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413913A (en) * | 2018-06-04 | 2018-08-17 | 中核(天津)科技发展有限公司 | High precision position measuring system |
| CN108709521A (en) * | 2018-06-04 | 2018-10-26 | 中核(天津)科技发展有限公司 | A kind of high precision displacement measuring device and measuring method |
| CN110823216A (en) * | 2019-10-29 | 2020-02-21 | 上海航天控制技术研究所 | Adaptive accelerometer temperature compensation method for inertial navigation |
Citations (3)
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|---|---|---|---|---|
| CN201599877U (en) * | 2010-01-18 | 2010-10-06 | 浙江艾迪西流体控制股份有限公司 | Heating system with temperature compensation function |
| CN101968496A (en) * | 2010-06-30 | 2011-02-09 | 中山市嘉科电子有限公司 | Full-automatic correction system for acceleration sensor |
| CN202903814U (en) * | 2012-11-16 | 2013-04-24 | 航宇救生装备有限公司 | Temperature compensation and time drift correction device for acceleration sensor |
-
2012
- 2012-11-16 CN CN2012104612737A patent/CN102944688A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201599877U (en) * | 2010-01-18 | 2010-10-06 | 浙江艾迪西流体控制股份有限公司 | Heating system with temperature compensation function |
| CN101968496A (en) * | 2010-06-30 | 2011-02-09 | 中山市嘉科电子有限公司 | Full-automatic correction system for acceleration sensor |
| CN202903814U (en) * | 2012-11-16 | 2013-04-24 | 航宇救生装备有限公司 | Temperature compensation and time drift correction device for acceleration sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413913A (en) * | 2018-06-04 | 2018-08-17 | 中核(天津)科技发展有限公司 | High precision position measuring system |
| CN108709521A (en) * | 2018-06-04 | 2018-10-26 | 中核(天津)科技发展有限公司 | A kind of high precision displacement measuring device and measuring method |
| CN110823216A (en) * | 2019-10-29 | 2020-02-21 | 上海航天控制技术研究所 | Adaptive accelerometer temperature compensation method for inertial navigation |
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Application publication date: 20130227 |