Photoelectric encoder real-time light intensity detection device

• Main Authors: TAN LINGLING, CAI JIWEN, ZHOU ZHONGLING, FENG BO
• Format: Patent
• Language: Chinese; English
• Published: 23.08.2019
• Subjects: COLORIMETRY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

The invention discloses a photoelectric encoder real-time light intensity detection device. The device includes a light source, an optical coded disc and a photoelectric encoder chip. The light sourceis a transmission light source or a reflection light source. The photoelectric encoder chip includes a test photosensitive unit and a calibration photosensitive assembly. The optical coded disc includes code tracks. The test photosensitive unit includes one or more photosensitive units. The photosensitive units are arranged along code track directions. The calibration photosensitive assembly includes at least four photosensitive units. Due to the addition of the calibration photosensitive assembly, instantaneous strongest and weakest light intensity values caused by interference factors and equipment can be measured in real time. Accurate position information can be obtained through analog-to-digital conversion and calculation. The photoelectric encoder real-time light intensity detectiondevice can calibrate inac