Sharp Boosts Range Sensor Accuracy for Robot Cleaners
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.