Current situation of ranging sensors

The characteristics of the ranging sensor are: ① broadcast, ② light, ③ There are three types of ultrasonic waves. One of them is the ultrasonic wave commonly used by light sensors such as General embedded devices. There are several methods of optical ranging. Commercial sensors can be used as a general principle to measure triangulation objects. The range is about 4 cm to 3 meters. Precision Low-cost yen universal (Thousand) Is about 10%, in the factory inspection line and 1 micron (1/1000mm)It also has high precision of the following materials ( Sensors used for one-price materials cost hundreds of dollars, ranging from 10 bits to more than several hundred dollars). Low price general optical ranging sensors are used in the following applications: · sensors various energy-saving devices are used to detect human body · automatic door sensor · stay in the room detection sensor passes through · automatic lighting · body sensor · hand dryer of hand sensor