A temperature compensation method for quartz acceleration sensor
An acceleration sensor and temperature compensation technology, applied in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, instruments, etc., can solve the problem of different temperature curves and achieve high-precision results
Active Publication Date: 2017-06-16
郑州合智汇金电子科技有限公司
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[0005] The purpose of the present invention is to provide a temperature compensation method for quartz acceleration sensors, which can solve the problem of different temperature curves caused by the zero value output of quartz acceleration sensors with different inclination angles and rotation angles, and realize the temperature compensation of quartz acceleration sensors at high temperatures. Compensation, so that the quartz acceleration sensor maintains high accuracy at high temperature, so as to meet the requirements of the quartz acceleration sensor in the fields of aerospace, oil and gas development, etc.
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[0032] Such as figure 1 As shown, the temperature compensation method of the quartz acceleration sensor of the present invention comprises the following steps in turn:
[0033] A: Use the high-order nonlinear function to express the law of the maximum and minimum output of the quartz acceleration sensor with temperature, and establish the maximum compensation mathematical model and the minimum temperature compensation mathematical model. The formulas are respectively and Where Output_max and Output_min are the output of the maximum compensation model and the output of the minimum temperature compensation model respectively, w i and v i are the nonlinear coefficient corresponding to the maximum model and the nonlinear coefficient corresponding to the minimum model respectively, t is the temperature, i=1,2,...,6;
[0034] B: Establish a zero-value temperature compensation mathematical model as
[0035]
[0036] , where y is the sensor output, θ Tilt is the inclination ...
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The invention discloses a temperature compensation method for a quartz acceleration sensor, and the method comprises the following steps: A, employing a high-order non-linear function to represent the change rule of the maximum and minimum values, outputted by the quartz acceleration sensor, with the temperature, and setting up a maximum temperature compensation mathematic model and a minimum temperature compensation mathematic model; B, setting up a zero temperature compensation mathematic model; C, acquiring the maximum and minimum sampling value of the quartz acceleration sensor, determining the parameters of the maximum temperature compensation mathematic model and the minimum temperature compensation mathematic model; D, acquiring the zero output sampling data of the quartz acceleration sensor, outputting the parameter of the zero temperature compensation mathematic model; E, carrying out the normalized operation of the output of the quartz acceleration sensor. The method can achieve the temperature compensation of the quartz acceleration sensor under high temperature, and enables the quartz acceleration sensor to still maintain higher precision under high temperature.
Description
technical field [0001] The invention relates to a temperature compensation method, in particular to a temperature compensation method for a quartz acceleration sensor. Background technique [0002] With the development of science and technology, the requirements for the accuracy and temperature of sensors in different industries continue to increase. Quartz accelerometers are widely used in aerospace, oil and gas development and other fields due to their extremely high precision advantages. Even so, the temperature and accuracy requirements of quartz accelerometers have not met industry needs. For example, in the field of petroleum development, as the stratum continues to deepen, it not only poses a huge challenge to the high temperature resistance of the sensor, but also continuously increases the accuracy requirements of the sensor under high temperature conditions. Due to the constraints of processing technology and material properties, the accuracy of many high-tempera...
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IPC IPC(8): G01P21/00
Inventor 秦旭东杨维斌房斌
Owner 郑州合智汇金电子科技有限公司