汽車內(nèi)部的手勢控制集成

　　近距離傳感器已成為一個重要組成部分，觸摸屏技術(shù)已迅速發(fā)展成為人機界面的選擇，為廣泛的電子產(chǎn)品，今天。今天的車輛也不例外，因為設(shè)計師們尋求創(chuàng)新的、安全的、有區(qū)別的方法來控制司機和乘客提供的擴展的儀表和功能。基于接近傳感器的接口，顧名思義，并不總是需要物理接觸，這在汽車應(yīng)用中尤其有用。這項技術(shù)使姿態(tài)傳感，特別是汽車人機界面（HMI）設(shè)計團(tuán)隊在汽車電子設(shè)備控制方面具有吸引力。

　　在人機界面設(shè)計方面，觸摸控制、手勢識別和可靠、精確的接近傳感使基于中央控制臺控制面板的更為一致的電子人機界面成為可能。因此，對機械控制開關(guān)的依賴性降低，對成本、可靠性、耐久性和功耗產(chǎn)生了相應(yīng)的影響。此外，汽車制造商發(fā)現(xiàn)，比起傳統(tǒng)的機械開關(guān)和轉(zhuǎn)盤，消費者更喜歡觸摸開關(guān)和滑塊技術(shù)。

　　重要的是，接近傳感器和它們的相關(guān)控制器現(xiàn)在已經(jīng)成為支持汽車特定通信協(xié)議LIN和能，從而使它們更吸引汽車原始設(shè)備制造商和更容易集成在汽車電子系統(tǒng)中的其他。接近傳感器與快速增長的新一代LED的室內(nèi)環(huán)境照明的結(jié)合將是2012個中型模型的焦點。

　　Automotive OEM， Federal-Mogul， for example， has developed LED lighting that can be operated with a simple wave of the hand.2 The technology is claimed to enhance safety as it keeps a driver’s eyes on the road. Additional benefits include greater durability and reliability， as mechanical switches are all but replaced， and lower power operation. In this case， capacitive switching technology is used to detect the proximity of the hand as it enters a pre-set field （between 0 and 80 mm）。 The switch is triggered by the conductivity of iron in the blood. With capacitive proximity sensors， the device operates even with a gloved hand， unlike systems using infrared technology， for example. The lighting control system can be enhanced by programming the sensor to recognize a sliding or tapping action to dim or change the color of the lights.

　　Other product examples combining LEDs and proximity sensors in even mid-range vehicles are emerging from a number of carmakers. These include their use in backlights for door handles and window openers， other compartment lighting such as map or vanity lights， and central dome lighting. Light intensity can be programmed to vary according to the proximity of the conductive object. Lighting color can also be user-programmable. Other non-lighting automotive applications for proximity sensors include keyless door unlocking， waking up instruments or screens， and parking aids.