先進(jìn)驅(qū)動(dòng)輔助系統(tǒng)中傳感器的迅速使用

　　當(dāng)人們想到汽車傳感器系統(tǒng)時(shí)，可以預(yù)見到全球定位導(dǎo)航系統(tǒng)。然而，幫助失去的司機(jī)并不是汽車電子和傳感器系統(tǒng)增長最快的部門的推動(dòng)力。今天的汽車安全技術(shù)的目的是防止事故，由于司機(jī)的錯(cuò)誤，分心，嗜睡。

　　據(jù)ABI研究，先進(jìn)駕駛輔助系統(tǒng)（ADAS）已經(jīng)在一年的豪華車。對于2012年款的，然而，作為自適應(yīng)巡航控制等功能，車道偏離預(yù)警、低速碰撞緩解將大批量模型的居民包括福特和奔馳C級苯。作為一個(gè)結(jié)果，據(jù)估計(jì)，全球ADAS市場價(jià)值近100億美元的2011，蘑菇1300億美元2015。

　　ABI將新興的收入預(yù)測歸因于傳感器設(shè)計(jì)和制造方面的技術(shù)進(jìn)步，它提供了更低的成本和更好的性能，并且開發(fā)了額外的特性，使系統(tǒng)對新車購買者更具吸引力。

　　哪個(gè)部分能解釋那1300億美元？讓我們看看。

　　Lane departure warning （LDW） systems

　　Lane departure warning systems alert the driver when an unintentional lane departure is going to occur. The driver is then responsible to act. LDW systems alone are expected to reach a worldwide market value of more than $14.3 billion by 2016. There are two types of LDW systems on the market： camera-based and infrared systems.

　　Camera systems

　　In camera-based LDW systems， a forward-looking CCD or CMOS camera tracks visible lane markings. The lane markings on the road are used to calculate the lateral divergence and divergence angle from the center of the lane. Algorithms are used to estimate the vehicle’s future position. Image recognition software computes inputs for vehicle information including speed， yaw rate， and steering angle. If the system discovers that the vehicle is veering off its intended path， it warns the driver and the driver must take corrective action.