Method for simulating 2D gravity sensor as 3D gravity sensor and mobile phone thereof

Abstract

The invention discloses a method for simulating a 2D gravity sensor as a 3D gravity sensor and a mobile phone thereof. The method comprises the following steps: acquiring the x-axis and y-axis force sensing values of a 2D gravity sensor parallel to the x axis and the y axis of the screen of a mobile phone; then, calculating the absolute value of the force sensing value perpendicular to the z axis of the screen of the mobile phone based on the physical principle z=math.sqrt(g*g-x*x-y*y); recording the force sensing values of x and y every 0.2 seconds, recording multiple groups of force sensing change values in the x and y directions, and deducing whether the z value is positive or negative by analyzing the change trend of x and y; determining that the mobile phone is overturned if the value of x continuously decreases until over -9.8 and then continuously increases or the value of x continuously increases until over 9.8 and then continuously decreases, wherein the value of z at the moment and a previous value are opposite in sign, and if the initial value of z is positive and the absolute value thereof is greater than 9.8, that the mobile phone is overturned can be determined when the left and right values decrease or increase, and the value of z at the moment and a previous value are opposite in sign; and obtaining the simulated value of z through the above operation, wherein the values of x, y and z can be reflected to a caller by the 2D gravity sensor.

Description

technical field [0001] The invention relates to the technical field of smart phone gravity sensors, in particular to a method for simulating a 3D gravity sensor with a 2D gravity sensor and a mobile phone thereof. Background technique [0002] Gravity sensors are sensors widely used in smartphones, tablets, and laptops. It uses elastic sensitive element to make cantilever displacement device, and uses elastic sensitive element to make energy storage spring to drive electrical contacts, completes the conversion from acceleration force change to electrical signal, and then calculates and analyzes through microprocessor to complete the The functions designed by the program, such as the balance ball game on the mobile phone, the user-friendly operation such as the automatic switching of the mobile phone screen between the horizontal and vertical screens when the mobile phone is placed horizontally and vertically. [0003] The 2D gravity sensor only provides force sensing values...

AI Technical Summary

Problems solved by technology

However, existing 3D gravity sensors are costly and cannot be widely used

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