Title:
LIGHT DETECTION SYSTEM AND DISCHARGE PROBABILITY CALCULATING METHOD
Document Type and Number:
Japanese Patent JP2021131249
Kind Code:
A
Abstract:
To calculate an irregular discharge probability of an optical sensor.SOLUTION: A light detection system includes: an optical sensor 1; an application voltage generating circuit 12 that applies a drive pulse voltage to the optical sensor 1; a discharge determining portion 201 that detects the optical sensor 1's discharge; a discharge probability calculating portion 202 that calculates a discharge probability for each of a first state in which light from an additional light source 101 having a known light quantity is incident on the optical sensor 1 or the additional light source 101 is turned off, and in a second state in which the additional light source 101's turning-on/turning-off state is different from the first state and a pulse width of the drive pulse voltage is the same as the first state; a sensitivity parameter storing portion 19 that stores the optical sensor 1's sensitivity parameters; and a discharge probability calculating portion 203 that calculates a discharge probability of the optical sensor 1's irregular discharge on the basis of the sensitivity parameters, the discharge probabilities in the first and second states, and the drive pulse voltage's pulse widths in the first and second states.SELECTED DRAWING: Figure 1
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Inventors:
KONUMA SHUN
MORI RAITA
MORI RAITA
Application Number:
JP2020025470A
Publication Date:
September 09, 2021
Filing Date:
February 18, 2020
Export Citation:
Assignee:
AZBIL CORP
International Classes:
G01J1/02; G01J1/42
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa