Method of automatic standardized calibration for infrared sensing device
First Claim
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1. A method for calibrating an infrared sensing devices, comprising:
- a) storing a predetermined infrared detector output range in a control module;
b) emitting and detecting infrared radiation with a select infrared emitter/detector pair;
c) comparing the output value of said select infrared detector to said predetermined output range; and
d) calibrating multiple control modules by determining and storing an infrared emitter input value that produces an output value within said predetermined output range, using the same select infrared emitter/detector pair for the multiple control modules.
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Abstract
A method for calibrating automatic infrared sensing devices having control modules, an IR detector, and an IR emitter by using a select infrared emitter/detector pair to calibrate a plurality of control modules wherein an appropriate infrared emitter input value to the select infrared emitter is obtained to provide a given output from the select infrared detector in response to infrared radiation reflected from a known test object, and the appropriate infrared emitter input value is then determined and stored permanently in one or more control modules as a calibration standard.
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Citations
27 Claims
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1. A method for calibrating an infrared sensing devices, comprising:
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a) storing a predetermined infrared detector output range in a control module;
b) emitting and detecting infrared radiation with a select infrared emitter/detector pair;
c) comparing the output value of said select infrared detector to said predetermined output range; and
d) calibrating multiple control modules by determining and storing an infrared emitter input value that produces an output value within said predetermined output range, using the same select infrared emitter/detector pair for the multiple control modules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for calibrating infrared sensing devices, comprising:
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a) measuring a first output of a single infrared detector in response to background and randomly reflected emitted infrared radiation;
b) measuring a second output of said single infrared detector in response to emitted infrared radiation from a single infrared emitter and reflected from a test object;
c) subtracting said first output from said second output and storing the resulting net output of said infrared detector in one or more control modules;
d) comparing said net output of said infrared detector to a predetermined range of infrared detector output values in one or more control modules; and
e) increasing or decreasing infrared emitter input value in one or more control modules to provide an infrared emitter radiation output so that said net output of said infrared detector is within said predetermined infrared detector output range. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for calibrating infrared sensing devices, comprising:
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a) a single infrared emitter and a single infrared detector;
b) one or more programable control modules with memory and a calibration manager;
c) said control module having calibration data including a standard predetermined infrared detector output range of values; and
d) said calibration manager configured to provide an infrared emitter input value for said infrared emitter to produce an infrared emitter radiation output so that output from said infrared detector receiving said infrared radiation reflected from an object is within said predetermined infrared detector output range in one or more control modules. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification