Sharp Corp developed an infrared range sensor with an improved accuracy and smaller size for robot cleaners.
Sharp improved the accuracy of detecting the location of reflected light to a level higher than those of photo diodes by using a CMOS image sensor for the light receiving part of the sensor. As a result, the margin of error in range measurement was reduced from ±25% of the company's existing product, "GP2Y0A60SZ0F," to ±10% (when the distance is 50cm).
The package of the sensor measures 18.9 x 8.0 x 5.2mm, and its volume is about 40$% smaller than that of the existing product. The new senor comes in two models: the "GP2Y0E02B," which is equipped with an I2C interface, and the "GP2Y0E02A" with an analog output. The former is the industry's first infrared range sensor that uses a triangulation method and an I2C interface, Sharp said.
The measurement range of the sensor is 4 to 50cm. Its current consumption is 26mA (standard). Its power supply voltage is 2.7 to 3.6V, and its operating temperature is -10 to +60°C.
Sharp will start sample shipment Oct 16, 2012. The sample price of the sensor is ¥600 (approx US$7.73, including tax). Its volume production is scheduled to begin Nov 30, 2012, with a production rate of 100,000 units per month.