Redundant MEMS (Micro-Electro-Mechanical System) sensor-based flight attitude instrument
A sensor and air-attitude device technology, applied in the field of measurement, can solve the problems of abnormality, zero-position sudden change, large vibration noise, etc., and achieve the effect of good environmental adaptability and improvement of measurement accuracy.
Active Publication Date: 2018-06-29
THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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[0003] Traditional micro-inertial measurement devices are generally based on quartz inertial devices or fiber optic inertial devices. Even if they are based on silicon MEMS inertial devices, their angular velocity information and acceleration information not only change with temperature, but also have large vibration noise in harsh vibration environments. , Zero position mutation or even abnormality, and in the strong impact environment, the recovery time of the gyroscope is long, and the zero position difference before and after the impact does not meet the needs of engineering applications, etc.
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[0039] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0040] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0041] Such as figure 1 As shown, it is an embodiment of a heading and attitude instrument based on redundant MEMS sensors of the present invention. see figure 1 The attitude instrument based on redundant MEMS sensors may include a housing (not shown in the figure), ...
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The invention discloses a redundant MEMS (Micro-Electro-Mechanical System) sensor-based flight attitude instrument, which comprises a shell, a redundant MEMS measuring device, a vibration damping mechanism, a signal processing module and a power supply and interface module, wherein the shell is integrally in the shape of a rectangular parallelepiped; the redundant MEMS measuring device is arrangedin the shell, and comprises multiple mutually redundant MEMS sensors; the coordinate axes of all the MEMS sensors are mutually orthogonal; the vibration damping mechanism is used for achieving a vibration damping effect on the redundant MEMS measuring device; the signal processing module is arranged in the shell, is connected with the redundant MEMS measuring device, and is used for carrying outsignal conditioning and data fusion on an output signal of the redundant MEMS measuring device; the power supply and interface module is arranged in the shell, is connected with an external power supply, and is used for supplying power to the redundant MEMS measuring device and the signal processing module. The flight attitude instrument can be used for more accurately outputting angular velocityinformation and acceleration information in real time, and is higher in measurement accuracy.
Description
technical field [0001] The invention relates to the technical field of measurement, in particular to a heading and attitude instrument based on redundant MEMS sensors. Background technique [0002] At present, low-cost navigation and guidance technology is the primary content of developing practical precision guidance technology. MEMS (Micro-Electro-Mechanical Systems, Micro-Electro-Mechanical Systems) sensor-based IMU (Inertial measurement unit, inertial measurement unit) / GNSS (Global Navigation Satellite System, Global Navigation Satellite System) integrated navigation system has low cost, small size, and weight It has the advantages of light weight and low power consumption, so it has very important application value in vehicle positioning, precision agricultural machinery vehicle navigation, unmanned aerial vehicles for fire prevention in forest areas, precision guided weapons, and satellite detection. [0003] Traditional micro-inertial measurement devices are generall...
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IPC IPC(8): G01C21/18G01C21/16G01C21/00G01S19/49
CPCG01C21/005G01C21/165G01C21/18G01S19/49
Inventor 于翔杨拥军沈路李博
Owner THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP