Description
Overview:The SDS011 using principle of laser scattering,can get the particle concentration between 0.3 to 10um in the air.
It with digital output and built-in fan is stable and reliable.
Characteristics:
1. Accurate and Reliable: laser detection, stable, good consistency;
2. Quick response: response time is less than 10 seconds when the scene changes;
3. Easy integration: UART output (or IO output can be customized), fan built-in;
4. High resolution: resolution of 0.3ug/m3.
Scope of application:
PM2.5 Detector
Purifier
Air Exchangers
Filtering system
Working principle:
Using laser scattering principle:
Light scattering can be induced when particles go through the detecting area.
The scattered light is transformed into electrical signals and these signals will be amplified and processed.
The number and diameter of particles can be obtained by analysis because the signal waveform has certain relations with the particles diameter.
Technical Parameters:
No.ItemParameter1Measuring outputPM2.5,PM102Range0.0-999.9 ug/m33Power supply voltage5V4Maximum working current100mA5Sleep current2 mA6Operating temperature range-20-50?7Response time1s8Serial data output frequency1 time/s9Particle diameter resolutionLess than 0.3um10Relative error10%11Product size71x70x23mm
Interface specification:
PinNameexplain1CTLControl pin, reserved21um>0.3 Micron particle concentration, PWM Output35V5V power input425um>2.5 Micron particle concentration, PWM Output5GNDGND6RSerial port receiver RX7TSerial port transmission TXPS: The pitch of Interface is 2.54mm
Communication protocol:
Serial communication protocol: 9600 8N1. (Rate of 9600, data bits 8, parity none, stop bits 1)
Serial report communication cycle: 1+0.5 seconds
Data frame (10 bytes): message header + order+ data(6 bytes) + checksum + message trailer
The number of bytesNameContent0message headerAA1orderC02data 1PM2.5 low byte3data 2PM2.5 high byte4data 3PM10 low byte5data 4PM10 high byte6data 50(reserved)7data 60(reserved)8checksumchecksum9message trailerAB
Checksum: data 1 + data 2 + ...+ data 6
PM2.5 data content: PM2.5 (ug/m3) = ((PM2.5 high byte*256 ) + PM2.5 low byte)/10
PM10 data content: PM10 (ug/m3) = ((PM10 high byte*256 ) + PM10 low byte)/10
Package included:
1 x Nova PM Sensor SDS011 High Precision Laser PM2.5 Air Quality Detection Sensor Module
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