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World Academy of Science, Engineering and Technology 51 2009 Using Ultrasonic and Infrared Sensors for Distance Measurement Tarek Mohammad in [7, 10] have precision of less than 1 cm in distance measurements of up to 6m. Calibration of US Sensor From the results of the calibration of US sensor, we observed that: The amplitude from the US sensor is dependent on the distance and orientation of the obstacle relative to the sensor. 10 Experimental Setup (a) US sensor (b) IR sensor We used a ruler scale to obtain the actual value of distance whereas the sensors distance from LabView provided the measured value.
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