Sensors on the car and what role has

Now, an ordinary car above there are dozens of sensors , it is more a limousine . Automotive manufacturers abs sensor sensors, flow sensors, temperature sensors and pressure sensors, etc. . Why do so many car above the need to install a sensor it ? And what role they have ? Here for everyone to analyze. Sensor as the car computing system input device , it will speed , vehicle speed and a variety of medium temperature, engine running, working conditions and road information, etc. , into electrical signals lost to the computer so that the engine is in top working condition , pollution emissions for the minimum , and vehicle stability control makes driving is the safest. In simple terms , the role of automotive sensors are mainly two : First, to improve the security of driving a car and comfort ; two is to reduce the accident rate safety and comfort of the oldest automotive sensor is mainly used in the engine or drive system driving condition monitoring , etc. , there are oxygen, fluids , temperature, pressure and current  Crankcase Position Sensor such as ground . With the automobile market for the driving safety , comfort and handling and other requirements continue to enhance the dispersion in charge of safety, comfort and environmental protection in various vehicle sub- systems are increasingly high requirements to enhance safety features all kinds of sensors, accounted for 50% of the overall number of Shaft Position Sensor, the annual average growth rate of the highest, reaching 13.7% , so from the perspective of automotive safety , sensor applications is extremely critical electronic components. Second is the vehicle power sensors, including , speed and a growth rate of 6.7% oxygen Auto Temperature Sensor , pressure and acceleration sensors to 5.7% , the air flow sensor, temperature sensor and other sensors growth rate of about 4.6% annual growth rate of about 6.2 % . In addition, the image sensor in the car , according to iSuppli, car CCD (CMOS) image sensor in the entire sensor market , only about 1% market share. But it is expected to 2007 , the compound annual growth rate will exceed 40% of the total sales will be more than 1,100 ten thousand , the future every car will be assembled at least 5-10 image sensor terms of a car equipped with 10 images Camshaft Positioning Sensor  automotive image sensor market size of up to $ 1.6 billion . Reduce the accident rate car safety development so far, the ultimate goal is to reduce the accident rate , which is the most significant since the development of automotive sensor one of the indicators . Generally approximate the vision forward more than 180 degrees , but the car mirrors on three sides but is 40-50 degrees total rearview vision, not to mention the large vehicles can provide the driver's visual range ; therefore rear of the vehicle , side collision and other accidents caused by dead also the main reason .