汽車和工業(yè)應(yīng)用低成本手勢傳感系統(tǒng)的設(shè)計

　　人機界面（HMI）是幾乎所有工業(yè)和汽車應(yīng)用中的一個關(guān)鍵部件。由于交互變得越來越復(fù)雜，傳統(tǒng)的開關(guān)設(shè)計不適合許多環(huán)境：它們違反直覺，分散操作者的注意力，例如控制機器或駕駛車輛。

　　雖然有許多基于手勢的控制選項，但設(shè)計師們需要兼顧性能和準確性，同時兼顧成本和簡單性以及功耗。

　　本文將討論基于紅外傳感技術(shù)的手勢控制系統(tǒng)所需的組件。然后，它將推出一個低成本的傳感器評估板及其相關(guān)軟件，以幫助快速發(fā)展和縮短上市時間。

　　Contactless sensing applications

　　The first everyday application of contactless sensing was to detect the approach of an object and trigger an appropriate response. Automatic doors， soap dispensers， porch lights， and hand dryers all use contactless sensors as inputs.

　　The proximity sensors in these systems act as switches to provide a digital on/off output， while gesture sensing allows a user to employ three-dimensional movements to control a system in an intuitive manner.

　　Gesture control also allows a user to make changes within a large active field， allowing gross movements to replace finer ones. This capability is a key feature in video gaming systems that employ gesture sensing technology to detect complex sports related movements， or track several players.