Inertia sensing six axial direction input device and usage method thereof

Abstract

The invention discloses an inertia sensing 6 DOF input device and a method for using the same, wherein the device using a structure consisting of three XYZ-axis accelerometers and a gyroscope and can operate on a flat surface and in space, being free form the control of operation space; while operation on the flat surface ( also a general 2D mouse mode) is compensating for automatic deflection ofmanual operation by the rotation of a gyroscope detection device to overcome a technical barrier of a pure accelerometer coordinate input device to achieve a feeling of natural and smooth manipulation; and the space( 3D) operation is capable of detecting 6 DOF input information, that is, the detection by the rotation on the axes of X, Y, Z three axes and positive and negative directions along X,Y, Z three axes and is applicable to input of interactive computer games, and can also use the combination of X, Y two axes accelerometers and the gyroscope to form a 3D mouse using in PowerPoint or remote control environment; in addition, a Z axis accelerometer can detection and judgment of whether the device is on a flat table top or hold in space by a hand, which can be used as a switch signalfor switch between 2D and 3D mouse functions.

Description

Inertial sensing six-axis input device and method of use thereof technical field The present invention relates to an inertial sensing six-axis input device and its use method, especially to a structure using an X, Y, Z three-axis accelerometer and a gyroscope, which is not limited by the operating space and can be used in An input device that operates on a flat surface and can also be operated in space. Background technique Although there are currently cursor control devices that combine the dual functions of a mouse and a presentation device on the market, their control methods have not escaped the traditional electronic and mechanical control modes. As for the gravity-type cursor control device that has been actively developed in recent years, there are many technical problems. There is still room for improvement, so it is still in the research and development stage and no consumer products have come out. For patents, please refer to the U.S. Patent No. 5,898,421 "Gyro...

AI Technical Summary

Problems solved by technology

For patents, please refer to the U.S. Patent No. 5,898,421 "Gyroscopic pointer and method" shown in Fig. 1, which discloses an indicator, which can drive a mechanical gyroscope 110 to rotate with an external power supply 190, and the mechanical gyroscope The instrument 110 is pivotally connected in an inner frame 170 by means of a set of cardan shafts 115, 120, and the inner frame 170 is connected by another set of cardan shafts 140 whose axial direction is perpendicular to the cardan shafts 115, 120. , 145 are pivotally connected in an outer frame 160. When the device is operated in free space, the rotation amount of the gyroscope 110 can be corresponding to the cursor X, Y two-axis movement; because the indicator uses a pure gyroscope to input coordinates, it is only suitable for free space and cannot be used on a plane. Moreover, the mechanical gyroscope is bulky and has a high error value

Please refer to the US Patent No. 5,825,350 "Electronic pointing apparatus and method" shown in Figure 2, which discloses a pointing device 100 that can operate in a plane and in space, and a rolling ball 260 is provided inside the pointing device 100, and The internal circuit board 452 is provided with a gyroscope circuit, and a lever 472 is linked by a piston 270. When the pointing device 100 is pressed on a plane and used (that is, when used as a mouse), the piston will 270 can push up the lever 472 so that the rolling ball 260 can move freely, and when the indicating device 100 is lifted, the piston 270 can naturally pull the lever 472 Descending, so that the protrusion 506 arranged at the bottom of the lever 472 is pressed against the rolling ball 260 to restrict the movement of the rolling ball 260, at this time, the indicating device 100 can be used as an indicator , by virtue of the circuit board 452 provided with the gyroscope circuit, the amount of movement of the pointing device 100 can be detected and corresponded to the cursor of the display device; however, because the lever 472 and the bump 506 cannot really suppress The rolling ball 260, when the human hand shakes the pointing device 100 in space, will easily cause the rolling ball 260 to move or roll unexpectedly, thereby generating unnecessary moving signals and affecting coordinate input. , this structure has not been implemented or applied in the consumer market

At present, consumer products similar to the pointing device shown in Figure 2 can be seen on the market, which are combined with a gyroscope in an optical mouse. Although the optical sensing device can avoid the problem of unexpected movement of the rolling ball, however, whether it is The rolling ball or optical sensing, the rolling ball responsible for plane operation, the optical sensing and the gyroscope circuit responsible for space operation have nothing to do with each other. The shared shell of the device not only does not expand the basic functions, but also makes the overall device very bulky and heavy

As shown in Figure 3, the Taiwan Patent Application No. 90221010 "Gravity Mouse" 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 calculation, and the microprocessor IC can detect the time of the gravity detection IC movement, and receive the acceleration value generated by the gravity detection IC movement, calculate and convert it into the actual movement unit, and transmit it to the computer host to control the direction of the screen cursor; The main calculation method of the above-mentioned solution is to use accelerometers with two or more axes to perform integral calculations to control the movement of the cursor when the mouse is moving in space. The biggest deficiency of the above-mentioned method is that it will generate cumulative errors, resulting in distortion of the cursor positioning.

According to the above, it can be known how to have a plane / space operation function that is not limited by the operating space, can overcome the coordinate distortion and large error of the existing pure accelerometer or pure gyroscope coordinate input device, and at the same time can compensate The coordinate input device that causes errors caused by manual operation and unconscious rotation is an urgent issue for relevant industry players to solve

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