Optical sensor system
AssigneeAsahi Kasei Microdevices Corporation
InventorsTomohiko Ogawa, Yoshihiko Koizumi
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Abstract
Provided is a sensor system having an improved SNR. The sensor system (1) includes: a sensor (gas sensor 10) including a light-emitting element (11) and a detecting element (light-receiving element 12) that detects a signal that is based on light emitted from the light-emitting element; and a computation device (20) that, by taking an interval in which the light-emitting element emits light as an ON interval and an interval in which the light-emitting element does not emit light as an OFF interval, uses the signal as detected in the ON interval and the signal as detected in a plurality of the OFF interval to compute one measurement value.
Claims17
An optical sensor system comprising:
- a sensor including a light-emitting element and a detecting element that detects a signal that is based on light emitted from the light-emitting element;
- and
- a computation device that, by taking an interval in which the light-emitting element emits light as an ON interval and an interval in which the light-emitting element does not emit light as an OFF interval, uses the signal as detected in the ON interval and the signal as detected in a plurality of OFF intervals to compute one measurement value, wherein
- the plurality of the OFF intervals includes an OFF interval that is farther from the ON interval than a total of the ON interval and the OFF intervals.
Dependencies are inferred from the claim text.