PARTICLE DETECTION SENSOR, DUST SENSOR, SMOKE DETECTOR, AIR CONDITIONING DEVICE, AND PARTICLE DETECTION METHOD

• Main Authors: INABA YUICHI, KIRIHARA MASAO, OGAWA JUNYA, NOMURA KENTARO, OKUMURA SHIN, KOHARA HIROSHI
• Format: Patent
• Language: Chinese; English
• Published: 17.07.2018
• Subjects: ALARM SYSTEMS; COLORIMETRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; ORDER TELEGRAPHS; PHYSICS; RADIATION PYROMETRY; SIGNALLING; SIGNALLING OR CALLING SYSTEMS; TESTING

A particle detection sensor (1) is provided with a projecting element (111) for projecting light to a sensing region (DA), and a light-receiving element (121) for receiving scattered light scattered by particles (2) from the light passed through the sensing region (DA) from the projecting element (111) and generating an electrical signal including a pulse-shaped waveform corresponding to the particles (2). The particle detection sensor (1) is also provided with a signal processing unit (20) for amplifying the electrical signal and detecting the particles (2) using the amplified electrical signal. The signal processing unit (20) amplifies the electrical signal by a first amplification factor when the flow of a fluid in the sensing region (DA) is at a first speed, and amplifies the electrical signal by a second amplification factor different from the first amplification factor when the flow of the fluid is at a second speed different from the first speed. 颗粒检测传感器(1)具有：投光元件(111)，其向检测区域(DA)投射光；和受光元件(121)，其接受来自投光元