3D3D micro-inertia sensing method and system

Abstract

The invention discloses a 3D micro-inertial sensing method and system which is used for detecting the angle change between the micro-inertial sensing module and the horizontal plane to control the cursor moving and to detect the hand swing to control the display turning page. The micro-inertial sensor detects the gravity change of the micro-inertial sensing module in the space caused by inclination and transmits the signals through a wireless transmitter to a microprocessor which filters the signal and makes a crossed inter-comparison of the titling angle and the relative position with the two signal number of the cursor control circuit to control the moving of the display cursor. The influence of one axis jitter can be weakened according to the variable quantity of each axis of the micro-inertial sensing module and the centrifugal force impacting on the Y-axis can be removed by using two Y-axis accelerometers to sense the centrifugal force difference.

Description

technical field [0001] The present invention relates to a 3D micro-inertial sensing method and system, in particular to a method for controlling the movement of the display cursor by detecting the angle change between the micro-inertial sensing module and the horizontal plane, which can precisely control the cursor to move to the desired position. The position is required, and the operation method is simple. You can also use the hand swing to control the page turning of the display. It is not only ergonomic, but also can cooperate with specific actions to achieve the effect of continuous page turning. It is suitable for the application and manufacturing of cursor controllers. Background technique [0002] Press, there are many types of existing cursor control devices. For example, the control computer display cursor mostly adopts the form of a mouse, while the presentation device for controlling a projector has a remote controller appearance. There are two types of optical t...

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Problems solved by technology

[0004] For patents, see figure 1 As shown in US Patent No. 5874941 "Presentation supporting device", the said case discloses a presentation device 2, which generates an acceleration signal by virtue of an X-axis acceleration sensor 1A and a Y-axis acceleration sensor 1B sensing the acceleration changes generated by the tilt of the device , and then processed by the acceleration signal processors 10A, 10B to generate cursor movement signals, so as to achieve the purpose of controlling the cursor, for example, when the user tilts the device forward to a certain angle, the cursor can be controlled to start moving, ideally Next, when the cursor moves to the desired position, the user should return the device to the initial angle to stop the cursor from moving. However, due to the influence of gravity acceleration in actual applications, the cursor continues to move even though the device has been reset. The cursor It cannot be accurately positioned at the desired position and the stability is low. The user must waste a lot of time and repeat corrections to control the cursor to stay at the exact position. Moreover, when the device is tilted larger, the acceleration value is higher, and the cursor moving speed is also slower. The subsequent acceleration makes it difficult for the user to control stably; moreover, the described device cannot achieve the continuous page turning function

[0005] Another example figure 2 As shown, the Taiwan Province of China Patent Application No. 90221010 "Gravity Mouse", which uses a gravity detection IC to measure the potential energy of an object, converts the potential energy into a signal generated by kinetic energy, and transmits it to the microprocessor IC for calculation. The microprocessor IC can detect the time when the gravity detection IC moves, and receive the acceleration value generated by the gravity detection IC movement, calculate and convert it into an actual movement unit, and transmit it to the computer host to control the direction of the display cursor; The main calculation means of the case is that when the mouse moves in space, the accelerometers with two or more axes are used to carry out integral calculations to control the movement of the cursor. However, when the translation is used, the integral of the acceleration will produce cumulative errors that cannot be eliminated, resulting in distortion of the cursor positioning; Otherwise, the mouse described above cannot achieve the continuous page turning function

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