GP2Y0A21YK

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Optical Sensor: Distance Measuring

The GP2Y0A21YK optical sensor for accurately measuring distances was developed by SHARP Corporation. It utilizes infrared sensing technology to detect objects using emitted light reflected from them. This type of technology is necessary for applications such as robots that can detect obstacles in their paths, as well as in automotive cruise control systems.

The GP2Y0A21YK is an analog sensor that consists of an infrared emitting diode (IRED) and an NPN phototransistor that is integrated in one compact module. It is designed with long sensing range of 70 cm for accurately measuring distances and detecting objects. It operates on a stable supply of 5V DC and has a low current consumption of 9.6mA. It also has a small enough size to be integrated in various applications.

The major features of GP2Y0A21YK that makes it attractive for consumers are its high detection accuracy, no adjustment, reliable operation, low noise, wide sensing range, and small size. It is able to detect objects from a distance of up to 70 cm and perform accurate measurements of distances. Its ability to accurately measure distances is what makes it ideal for applications such as robots and cruise control systems.

The working principle of the GP2Y0A21YK is based on emitting a signal of infrared light from its IRED and then detecting the reflection of this light from objects. The level of the returned light signal is detected by the phototransistors, and is then converted into a current signal. This current signal is proportional to the distance of the object that the infrared light is reflected from.

The GP2Y0A21YK is widely used in robotics, navigation, and automotive cruise control systems. It is also used in industry for robot vision systems and monitoring applications. Additionally, it is becoming increasingly popular in home automation systems for detecting obstacles, motion, and presence.

The GP2Y0A21YK is well suited for distance measuring applications due to its high accuracy and reliable operation. Its wide sensing range, low power consumption, and small size make it an attractive choice for various applications. It is a reliable and accurate distance measuring sensor for robotic and automotive applications, as well as various monitoring and home automation systems.

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