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Error correction method and device for vector sensors

A vector sensor, error correction technology, applied in the direction of the instrument, can solve problems such as difficult to use correction, to achieve the effect of accurate sensing data

Active Publication Date: 2014-05-21
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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Problems solved by technology

However, the existing error correction technologies are all developed for specific sensors, and some need to install additional hardware devices for error correction
This makes it difficult for intelligent communication terminals to use existing error correction technology to correct the sensing data of various sensors

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  • Error correction method and device for vector sensors
  • Error correction method and device for vector sensors
  • Error correction method and device for vector sensors

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0026] figure 1 and figure 2 A first embodiment of the invention is shown.

[0027] figure 1 It is a flow chart of the error correction method of the vector sensor provided by the first embodiment of the present invention. see figure 1 , the error correction method of the vector sensor includes: Step S110, obtaining the measured value of the vector sensor signal of the vector sensor in the reference coordinate system under at least 3N different attitudes; Step S120, according to the vector sensor in the error model The relationship between the measured value of the signal and the actual value of the vector induction signal and the equation that the actual value of the vector induction signal is a constant, establishes a system of equations with the error parameter as an unknown; step S130, calculate the ...

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Abstract

The invention discloses an error correction method and device for vector sensors. The error correction method for the vector sensor comprises the following steps: acquiring the measured values of vector sensing signals of vector sensors in a plurality of reference coordinate systems of different postures; establishing an equation set in which an error parameter is taken as an unknown number according to a relation between the measured value of each vector sensing signal and the practical value of each vector sensing signal in an error model as well as an equation in which the practical value of each vector sensing signal is taken as a constant; calculating the error parameter of the measured value of each vector sensing signal according to the equation set; correcting each vector sensor according to the error parameter of the measured value of each vector sensing signal. By adopting the method and the device, correction of sensing data of the vector sensors is realized under the situation of not adding any auxiliary hardware device, and sensing data of multiple vector sensors of a mobile terminal become more accurate.

Description

technical field [0001] The invention relates to the technical field of mobile communication terminals, in particular to an error correction method and device for a vector sensor. Background technique [0002] Various sensors, such as acceleration sensors and magnetic sensors, are installed in current intelligent communication terminals. Due to the limitation of the internal space of the intelligent communication terminal, the performance of these sensors is not very good, and the accuracy of the data given is not very high. If you want to use the sensing data of these sensors to do precise mathematical calculations, the error of the calculation results will be very large. [0003] Therefore, before using the sensing data of these sensors for mathematical operations, it is necessary to perform error correction on the sensing data. However, the existing error correction technologies are all developed for specific sensors, and some need to install additional hardware devices ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00
Inventor 蒋方胜
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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