Nova Fitness Co., Ltd.
Laser PM2.5 sensor
specification
Product model: SDS011
Version : V1.0
Nova Fitness Co.,Ltd
2014-8-5
Nova Fitness Co., Ltd.
Overview
SDS011 uses the principle of laser scattering in the air, can be obtained from 0.3 to 10 microns suspended particulate matter concentration, the data is stable and reliable; the built-in fan, digital output, high degree of integration.
Characteristics
NO1.The accurate data: laser detection, stable, good consistency;
NO2.Quick response: scene change response time of less than 10 seconds;
NO3.Facilitate the integration: the serial output (or IO output can be customized), fan;
NO4.The high resolution: the resolution up to 0.3 micron minimum diameter ofparticles;
Nova Fitness Co., Ltd.
Working principle
Using laser scattering principle:
when the lase beam through the detecting position particle will produce weak light scattering, light scattering wave and particle in a particular direction is related to the diameter of the particle number concentration, through different waveform classification size statistics and conversion formula can get different size particles in real-time, calibration method to get mass concentration of unified with the official unit; Technical parameters Number 1 2 3 4 5 6 7 8 9 10 Project Measurement parameters Range Power supply voltage Maximum working current Sleep current Working temperature range Corresponding time Serial data output frequency Particle diameter resolution Error Parameter PM2.5,PM10 0.0-999.9 micrograms / cubic meter 5V 220mA 2mA -20-50℃ 1 sec 1 times / sec < 0.3 micron 5% Note Nova Fitness Co., Ltd.
11
Product size 71x70x23mm without inlet hose product size：
L*W*H=71*70*23mm
Interface specification： connector comment Name pinout 1 2 3 4 5 6 7 CTL 1um 5V 25um GND R T control pin, backup PM2.5 0-999ug/m3,PWM OutPut 5V Input PM10 0-999 ug/m3,PWM OutPut ground RX of UART（TTL） TX of UART（TTL） PS：The distance between each pin is 2.54mm.
The UART communication protocol：
bit rate ：9600 Data bit ：8 parity bit：NO stop bit ：1 The number Name of bytes 0 Message Backup AA Nova Fitness Co., Ltd.
header 1 2 3 4 5 6 7 8 9
Commander No. DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 Checksum C0 PM2.5 Low byte PM2.5 High byte PM10 Low byte PM10 High byte 0(Reserved) 0(Reserved) Checksum message tail AB Checksum: Checksum=DATA1+DATA2+...+DATA6 。 PM2.5 value: PM2.5 (ug/m3) = ((PM2.5 High byte *256) + PM2.5 low byte)/10
PM10 value: PM10 (ug/m3) = ((PM10 high byte*256) + PM10 low byte)/10
PWM Output description Range of PM2.5 value Range of PM10 value Cycle： high level output at the beginning of the whole cycle: The middle of this cycle 0-999ug/m3 0-999ug/m3 1004ms±1% 2ms 1000ms±1% Nova Fitness Co., Ltd.
low level output at the end of 2ms the whole cycle: Schematic diagram of output：