Method and apparatus for calibrating gyroscope in wireless mouse
A technology of gyroscope and air mouse, which is applied in the field of air mouse calibration, can solve the problems of low calibration accuracy and troublesome use, and achieve the effect of high calibration accuracy and convenient use
Inactive Publication Date: 2015-05-20
王亚斌
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[0003] The technical problem to be solved by the present invention is to provide a method and device for calibrating the gyroscope in the air mouse with high calibration accuracy and convenient use in view of the defects of the prior art that the above-mentioned calibration accuracy is not high and the use is troublesome
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0032] In the embodiment of the method and device for calibrating the gyroscope in the air mouse in the present invention, the flow chart of the method for calibrating the gyroscope in the air mouse is as follows figure 1 shown. In the case of only using the gyroscope for judgment, the gyroscope detects the angular velocity. When the air mouse is moving very slowly, the change of the angular velocity value output by the gyroscope is very small, and its value is bas...
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The invention provides a method for calibrating a gyroscope in a wireless mouse. A gravitational acceleration sensor is arranged in the wireless mouse. The method comprises the following steps: carrying out electrifying initialization on the gyroscope and the gravitational acceleration sensor adopted by the wireless mouse; judging whether an acceleration magnitude outputted from the gravitational acceleration sensor is identical to a first preset value or not, and if so, executing a following step of judging an angular velocity magnitude outputted from the gyroscope, otherwise, executing the next step; judging whether the wireless mouse is in a moving state and not calibrating the gyroscope; judging whether the angular velocity magnitude outputted from the gyroscope is less than a preset value, and if so, judging that the wireless mouse is in a stationary state and executing the next step, otherwise, returning to the last step; and saving the angular velocity magnitude of the gyroscope when the wireless mouse is in the stationary state so as to calibrate the gyroscope. The invention also relates to an apparatus for implementing the method. The method and the apparatus for calibrating the gyroscope in the wireless mouse have the following beneficial effects: calibrating precision is relatively high and application is relatively convenient.
Description
technical field [0001] The invention relates to the field of air mouse calibration, in particular to a method and device for calibrating a gyroscope in an air mouse. Background technique [0002] The gyroscope is very sensitive to temperature drift. As the ambient temperature changes, the angular velocity value output by the gyroscope will change. If it is not calibrated, it will affect the accuracy. At this time, this situation may occur: when the air mouse is placed at rest, it will Drift slowly. In fact, the air mouse should not move at this time. It should be in a static state when placed here. At this time, the angular velocity value output by the gyroscope will be wrong. That is to say, when the air mouse is not moving, the angular velocity value output by the gyroscope is theoretically 0, but in fact the angular velocity value output by the gyroscope may not be 0. In this way, only based on the gyroscope to judge, the above phenomenon will exist. When the air mouse m...
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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 王亚斌谌海鸥
Owner 王亚斌