Spatial position tracking method and system for target

Abstract

The invention discloses a spatial position tracking method and system for a target. For M rows (N columns) of electrodes in the planar capacitive sensor array, two adjacent rows (columns) of electrodes are respectively controlled to be connected together to form a driving electrode and an induction electrode; meanwhile, electrodes in other rows (columns) are controlled to be in a suspended state; measuring an actual inter-row (column) electrode capacitance value between the formed driving electrode and the formed sensing electrode is measured until actual inter-row (column) electrode capacitance values corresponding to all two adjacent rows (columns) of electrodes in the M rows (N columns) of electrodes are obtained through measurement, and obtaining the inter-electrode capacitance value of each initial row and the inter-electrode capacitance value of each initial column of the planar capacitive sensor array are obtained; and determining the position of the target is determined based on the change of the capacitance values between the row and column electrodes. The electrodes in each row and each column are connected to increase the area of the electrodes, so that the area of the sensor formed by the electrodes is increased, and the detection distance of the sensor is increased; meanwhile, traditional sensor measurement times are reduced, and system measurement time is shortened.

Description

technical field [0001] The present application relates to the field of sensor detection, in particular to a method and system for tracking a spatial position of a target. Background technique [0002] In recent years, human-computer interaction technology has been successfully applied in many fields such as entertainment, medical care, smart home, automobile, education, etc., and has gradually integrated into everyone's life. Planar capacitive sensors are widely used in ECT imaging, humidity detection, distance measurement, human body detection and human-computer interaction technology due to their advantages of low price and simple manufacture. [0003] However, most of the current human-computer interactions of planar capacitive sensors are applied to short-distance (for example, less than 20cm) interactions, which greatly limits the application of planar capacitive sensors in human-computer interaction. At present, the detection depth of the planar capacitive sensor can ...

AI Technical Summary

Problems solved by technology

At present, the detection depth of the planar capacitive sensor can be improved by increasing the area of ​​the electrode, but this trades the area for the detection resolution, and there is a contradiction between the area and the resolution

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