Detection method and detection device for keyboard key and computer storage medium

A detection method for a keyboard key, applied to an infrared keyboard comprising a keyboard operation area, wherein:

• at least one group of opposite sides of the keyboard operation area is provided with an infrared array comprising a plurality of groups of infrared emitting tubes and infrared receiving tubes opposite to the infrared emitting tubes, and an infrared light network composed of a plurality of intersecting infrared lights is formed at the keyboard operation area;
• a key is provided at the keyboard operation area, a light-blocking cylinder configured to move vertically with a movement of the key is fixedly provided at a bottom of the key, and the light-blocking cylinder is initially positioned at a preset distance above the infrared light network;
• and
• the detection method for keyboard key comprises:
• detecting a signal strength value of an infrared light received by the infrared receiving tube;
• in response to that the signal strength value is lower than a preset threshold, identifying blocked infrared lights and generating a blocked light path combination;
• determining a triggered target key based on the blocked light path combination;
• and
• calculating a travel depth of the target key based on a signal strength change value of the blocked light path combination;
• wherein the determining the triggered target key based on the blocked light path combination comprises:
• searching for a preset key mapping table storing corresponding relationships between each key and the blocked light path combination;
• and
• matching the blocked light path combination with the preset key mapping table to determine the triggered target key.