In the other hand, avoid the use of a capacitor between the signal output and GND or Vcc: it may dramatically reduce the sensor dynamics low pass filter. Below, we will see how to numerically filter this output in order to improve the precision without decreasing the dynamics. AD conversion of the sensor analog output When powered with a 5V potential, the Sharp sensor has a maximum output voltage of about 2. The highest useable distance gives approximately 0. In order to obtain the best precision, the highest limit of the converter on 8 bits should more or less correspond to the highest output voltage of the sensor, that is the lowest measurable distance, and vice versa.
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Less influence on the color of reflective objects, reflectivity 2. External control circuit is unnecessary 4. MFG, CO. S3B-PH TVs 2. Personal computers 3. Cars 4. Copiers 1 3 Terminal connection g The dimensions marked 5 are described the dimensions of lens center position. Unit 80 cm V 0. The distance specified by Vo should be the one with which the output L switches to the output H.
Second output nth output GP2D12 7. Surface Illuminance of Reflective Object 3. Ambient Temperature 3. Detection Distance 3. X Detection distance 0 1 2 3 4 5 Detection distance X cm Application Circuits NOTICE qThe circuit application examples in this publication are provided to explain representative applications of SHARP devices and are not intended to guarantee any circuit design or license any intellectual property rights.
SHARP reserves the right to make changes in the specifications, characteristics, data, materials, structure, and other contents described herein at any time without notice in order to improve design or reliability. Manufacturing locations are also subject to change without notice.
SHARP takes no responsibility for damage caused by improper use of the devices which does not meet the conditions and absolute maximum ratings to be used specified in the relevant specification sheet nor meet the following conditions: i The devices in this publication are designed for use in general electronic equipment designs such as: Personal computers Office automation equipment Telecommunication equipment [terminal] Test and measurement equipment Industrial control Audio visual equipment Consumer electronics ii Measures such as fail-safe function and redundant design should be taken to ensure reliability and safety when SHARP devices are used for or in connection with equipment that requires higher reliability such as: Transportation control and safety equipment i.
Under the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of SHARP.
Express written permission is also required before any use of this publication may be made by a third party.
Sharp Digital IR Sensors GP2D15
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