obsidian-notes/信号源/控制/电容触摸.md
CSSC-WORK\murmur 3e6078442b init version
2024-04-15 11:19:57 +08:00

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---
title: 电容触摸
updated: 2022-01-08 15:15:43Z
created: 2022-01-08 13:18:08Z
---
APDS-9960 + RH6016
APDS-9960自带手势识别原理是不同的手势方向会造成LED起止感应时间的差异理论上精度足够。
但存在两个问题,一是不能分辨空回程操作,即连续的'上'会误判为'上下上下'
为避免这一问题,需要准确判断是空回程,还是有效回程,经分析,单纯的算法很难有效区分。
二是木有准确的手势起止触发点,误判的几率较高
为此加入额外的判别依据为面板加入独立的触摸识别作为手势起止识别点核心IC为RH6016