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DISTANCE MEASURING DEVICE, CONTROL METHOD OF DISTANCE MEASURING DEVICE, AND CONTROL PROGRAM OF DISTANCE MEASURING DEVICE
DISTANCE MEASURING DEVICE, CONTROL METHOD OF DISTANCE MEASURING DEVICE, AND CONTROL PROGRAM OF DISTANCE MEASURING DEVICE
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机译:距离测量装置,距离测量装置控制方法,距离测量装置控制装置
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摘要
The present invention is to provide a distance measuring device capable of distinguishing between a reflection from fog or the like and a reflection from an actually existing object in an environment such as fog.;The invention is a distance measuring device including a light-emitting element 12 that transmits a signal, a light-receiving element 15 that receives a signal transmitted by the light-emitting element 12 and reflected by an object, and outputs a reception signal corresponding to a received signal strength, a comparator 19 that outputs a first signal equal to or greater than a first threshold value with respect to signal strength and a second signal equal to or greater than a second threshold value higher than the first threshold value from the reception signal, and a signal processing unit 10 that distinguishes the reception signal as valid or invalid or not from a relationship between a first time span from when the first signal becomes equal to or greater than the first threshold value until the first signal becomes less than the first threshold value and a second time span from when the second signal becomes equal to or greater than the second threshold value until the second signal becomes less than the second threshold value.
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