An inclination detection device and its angle calculation method

An inclination detection and angle technology, which is used in measurement devices, inclination measurement, mapping and navigation, etc., can solve the problems that the accuracy needs to be improved, the measurement accuracy cannot reach the order of arcseconds, the noise of the accelerometer, and the model error. Effects of error reduction, noise reduction, and high-precision calculation

Active Publication Date: 2019-09-27
INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI
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Problems solved by technology

However, the existing inclinometers based on three-axis accelerometers are limited by many factors, such as accelerometer noise, model errors, angle solution methods, ambient temperature and magnetic field disturbance errors, etc., and their measurement accuracy cannot reach the order of arc seconds
Therefore, the accuracy of the existing inclinometer equi-inclination detection device based on the accelerometer scheme needs to be improved

Method used

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  • An inclination detection device and its angle calculation method
  • An inclination detection device and its angle calculation method
  • An inclination detection device and its angle calculation method

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Embodiment Construction

[0020] see figure 1 , figure 1 It is a schematic diagram of a partial cross-sectional structure of an inclination detection device in an embodiment. In this embodiment, the inclination detection device includes but is not limited to a first accelerometer 2a, a second accelerometer 2b, a third accelerometer 2c, and a temperature control module (not marked) and the magnetic shielding module 5. It should be noted that the first accelerometer 2a, the second accelerometer 2b, the third accelerometer 2c, the temperature control module and the magnetic shielding module 5 are the minimum achievable modules of this embodiment, which can be constructed on figure 1 structure shown, but in other embodiments may not include figure 1 Other configurations shown, or can be substituted figure 1 Other structures shown are not limited here.

[0021] Wherein, the first accelerometer 2a, the second accelerometer 2b, and the third accelerometer 2c can be configured and used by using quartz flex...

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Abstract

The invention relates to an inclination angle detection device and an angle calculation method thereof. The inclination angle detection device comprises first, second and third accelerometers, a temperature control module and a magnetic shielding module, wherein sensitive shafts of the first, second and third accelerometers are in mutual orthorhombic arrangement; the temperature control module is used for providing the constant temperature space; the magnetic shielding module is used for inhibiting external magnetic field fluctuation; the first, second and third accelerometers are all arranged in a space formed by the temperature control module and the magnetic shielding module. The inclination angle detection device is characterized in that on the basis of a conventional three-shaft accelerometer, the influence due to temperature can be effectively reduced through the temperature control module; the errors caused by magnetic field perturbation can be reduced through the magnetic shielding module, so that the noise due to the temperature and the magnetic field perturbation can be greatly reduced. The specific algorithm is used for correcting the acceleration output result, so that the high-precision inclination angle detection in the arc-second magnitude can be realized.

Description

technical field [0001] The present application relates to the technical field of angle measurement, in particular to an inclination detection device, and also relates to an angle calculation method of the inclination detection device. Background technique [0002] An inclination detection device, such as an inclinometer, is an instrument used to measure the inclination angle of a target surface relative to the local horizontal plane. High-precision inclinometers are one of the important fields of precision instrument development. Extremely high-precision inclinometers (with a resolution of 0.001 arc seconds) can be used for solid tide detection, crustal deformation monitoring, or geodynamic research; high-precision inclinometers The instrument (with a resolution of 0.1 arc second) can also be used to measure the inclination angle of ships and tanks, or in geological drilling, well logging and other fields. [0003] In the field of geophysical applications, based on differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C9/00
Inventor 涂海波田蔚梁星辉何建刚柳林涛
Owner INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI
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