حسگر DSM501A یک سنسور ارزان قیمت با اندازه کوچک می باشد که دارای خروجی PWM است و و می توان با اتصال مستقیم به میکرو، سرعت فن را کنترل کرد. این سنسور تشخیص غبار می تواند ذرات به اندازه 0.7 میکرومتر را شمارش و حس کند.
Description:
The dust sensor module DSM501A is low cost,compact size for a particle density sensor. DSM501 series detects the level of indoor airborne dust, particles, and pollen, and ideal for use in stand-alone air cleaner or IAQ monitor. PWM output of the sensor can be directly connected to μ-com to control fan speed or ventilation and also to display the level of particles. Detectable size of particle is limited to minimum 0.7 μm, and the application for smoke or fire alarm is prohibited.
Dust Sensor detects dust particle concentration in air by using an optical sensing method where an infrared light emitting diode (IR LED) and a photosensor are optically arranged in the device. The photosensor detects the reflected IR LED light by dust particles in air.
Specifications:
Quantitative particle measurement with the principle of particle counter.
FIne particle of which diameters are bigger than one micron could be detected with high sensitivity.
Inside heater realizes the self-air taking.
One control contact and two output contacts.
Application:
Air cleaner or Air purifier
Air condition
Air quality monitor
Ventilator etc.
Features:
Operating voltage range: DC 5V ± 0.5V
Output mode: PWM pulse width modulation
Sensitivity: 15,000 / 283ml
Operating current: (Max)90mA
Humidity range:
Storage environment: 0-99% RH
Working environment: 0-95% RH
Temperature range:
Storage environment: -20 °C to 80 °C
Working environment: -10 °C to 60 °C
PWM output
Compact size and lightweight
Easy installation
Single power supply
The DSM501A consists of:
Light Emitting Diode(LED) Lamp
Detector
Signal amplifier circuit
Output drive circuit 1
Output drive circuit 2
Heater