integrated air quality sensor module am4100-i...

Writer Audit Approved

Mei Yang

Product Name: Integrated Air Quality Sensor Module

Item No.: AM4100-I

Version: V0.2

Date: December 29, 2018

SPECIFICATION

www.gassensor.com.cn 1/11

Revision

No. Version Content Reviser Date

1 V0.2 The information of the Mating Female Connector and the

Connection cable is updated. Mei Yang 12.29

2 V0.2 The PM2.5 particle measurement accuracy is updated Mei Yang 12.29


Integrated Air Quality Sensor Module

AM4100-I

AM4100-I is an integrated air quality sensor module, able to detect indoor particle concentration, CO2 concentration, VOC, RHT and output real-time measurement data. It is with stable performance, compact structure design, multi-function and optional connection ways.

▪ Highly integrated with sensors including laser particle, NDIR CO2, VOC, temperature and humidity for option ▪ High accuracy and stable performance ▪ Digital interface UART/I2C ▪ Easy to install and simple to debug ▪ With voltage regulator design and EMC compliant, strong anti-static ability

▪ The PM sensor integrated adopts laser scattering technology to detect PM2.5 mass concentration ▪ The CO2 sensor integrated adopts NDIR technology to detect indoor CO2 concentration ▪ The TVOC sensor is based on semiconductor principle ▪ The RH&T sensor integrated adopts capacitance resistance materials to detect indoor RH&T

Applications ▪ Air purifier

▪ Air quality monitor

▪ Air conditioner

▪ Ventilation system

▪ Consumer electronic products

▪ Environmental monitoring

Description

Features

Working Principle


Specifications

Integrated IAQ Sensor Specification

Operating principle

CO2: NDIR technology PM: Laser scattering technology VOC: Semiconductor technology

Measurement range

PM2.5: 0~1000μg/m³ CO2: 400~2000ppm VOC: 0~3 level Temperature: -20℃~60℃ RH: 30%~80% RH (non-condensing)

PM2.5 measurement accuracy

0~35 μg/m³: ±5μg/m³ >35 μg/m³: ±15% of reading Condition: 25℃±2℃, 50±10%RH Reference instrument: TSI8530 Dust source: Cigarette

CO2 measurement accuracy ±(50ppm+5% of reading) (25℃±2℃, 50±10%RH)

Temperature accuracy ±1℃

Relative humidity accuracy ±5%RH

PM time to first reading ≤8s

CO2 responding time (warm up) <120s

Data refresh rate 1s

Working condition -10~50℃, 30%~80% RH (non-condensing)

Storage condition -20~60℃, 0~95%RH

Working voltage DC 5V±0.1V, ripple wave < 50mV

Average working current <300mA (VOC:<80mA/CO2:<120mA/PM2.5:<80mA)

Standby consumption ≤1.5W

Signal output UART_TTL (3.3V TTL), I2C (3.3V TTL)

Dimension 72*61*25.3 mm

Life span

PM: under ambient temperature and pressure, in the condition of continuous use, lifespan is 22000 hours. Lifespan could be prolonged by controlling working time interval of the optical source. CO2: ≥8-10 years


Dimensions and Connector

1. Dimensions and Connector (Unit mm, tolerance ±0.2 mm)

2. I/O Connector Pinout

The interface connector is located at the side of the sensor. Corresponding female plug part number is XH-6 from JST. The pitch is 2.5mm. The connection cable with female connector at both ends can also be customized.

No. Pin Description

1 TX UART(Sending) (+3.3V TTL level)

2 RX UART(Receiving) (+3.3V level)

3 +5V Power supply input (+5V)

4 GND Power supply input (GND)

5 SL I²C clock terminal

6 SD I²C data Terminal


Product Installation

In order o avoid dust deposition on the surface of sensitive component (laser diode and photosensitive diode), which may affect

the measurement accuracy of the sensor, the appropriate installation ways are recommended as below.

User attention

▪The laser particle sensor module is suitable for indoor air quality testing, so please avoid working under bad environment which contains a lot of dust; When the laser particle sensor module works, please make sure the inlet and outlet unobstructed. It is recommended to use a pre-filter in the front of inlet of the dust sensor to avoid big dust and bis substance.

▪The sampling method of both NDIR CO2 sensor and semiconductor VOC sensor is diffusion, eyelet of gas diffusion should be reserved to make sure the gas can quickly and smoothly pass through the sensor module.

The blue is the front of

laser diode

The blue is the front of

photodiode

Cross section

Cross section

Recommended Installation Non Recommended Installation


UART Communication Protocol

1). The data in this protocol are all hexadecimal data. Such as "46 for decimal [70]"

2). [xx] for single-byte data (unsigned, 0-255); high byte of double byte data is in the front, the low byte in the back

3). Baud rate: 9600, data bits: 8, stop bits:1, parity: No.

Sending format of software:

Detail description on protocol format:

Item No. Function Description Command Function Description 1 Read measurement result 0x01 2 CO2 calibration 0x03 3 Open / close particle measurement 0x0C 4 Read software version number 0x1E 5 Read serial number 0x1F

Start Symbol Length Command Data 1 …… Data n. Check Sum HEAD LEN CMD DATA1 …… DATAn CS

11H XXH XXH XXH …… XXH XXH

Protocol Format Description Start Command sending fixed [11H], the module respond fixed [16H]

Length Frame bytes length = data length +1 (including CMD+DATA)

Command Command

Data Data of writing or reading, unfixed length

Check sum Cumulative sum of data = 256- (HEAD+LEN+CMD+DATA)

1. General Statemen

2. Format of Serial Communication Proto

3. RS232 Protocol Function Sheet

2. Format of Serial Communication Prot

1. General

2. Format of Serial Communication Protocol

1. General Statement


4.1 Read Measurement Result Send: 11 02 01 00 EC Response: 16 11 01 DF1- DF2 DF3- DF4 DF5- DF6 DF7- DF8 DF9- DF10 DF11-DF12 DF13-DF14 DF15-DF16 [CS] Function: to read CO2, VOC, RH, Temp, PM2.5 measurement result, state Statement:

Respond databit: 16 11 01 02 C2 00 03 00 00 00 00 00 63 00 73 00 53 00 00 xxx

CO2 VOC RH T PM2.5 reserved reserved state CS

Item Data Bit Decimal Effective Value Range Corresponding Value Multiple

CO2 [DF1] [DF2] 400 ~ 2000 400 ~ 2000 ppm 1

Semiconductor VOC

[DF3] [DF4] 0 ~ 3 0 ~ 3 level 1

Related humidity [DF5] [DF6] 50 ~ 990 5 ~ 99.0 % 10

Temperature [DF7] [DF8] 300 ~ 1200 -20 ~ 70℃ 10

PM2.5 [DF9] [DF10] 0 ~ 1000 0 ~1000 ug/m3 1

1.The temperature data is added 500 upon practical measurement result. For example, -20℃ is corresponding to value 300. Temperature value= (DF7*256+DF8-500)/10 2.The measurement result comes out with two databit, high bit is on the head, and the low bit is after then. Measurement result= DFn*256+DFn+1 3. DF15: alarming DF16: reserved

Bit Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

Alarming

CO2 abnormal HCHO abnormal

VOC

abnormal

Temperature

sensor

unconnected

Fan abnormal

4.2 CO2 Calibration Send: 11 03 03 DF1 DF2 [CS] Response: 16 01 03 E6 Function: CO2 calibration Statement: Format statement:

1. Calibration target value = DF1*256+DF2 2. Before CO2 calibration, please make sure that current ambient CO2 value is the zero target value(400ppm), and stable time is 2 minutes at least.

Item Data Bit Decimal Effective Value Range Corresponding Value Multiple

Zero target value [DF1][DF2] 400 ~ 1500 400 ~1500 ppm 1

4. Protocol Description


4.3 Open and Close Particle Measurement Send: 11 03 0C DF1 1E CS Response: 16 02 0C DF1 CS Function: open and close particle measurement Statement: 1. When send command, DF1=2 is measurement open; DF1=1 is measurement close; 2. When respond command, DF1=2 is measurement open; DF1=1 is measurement close; 3. When the sensor receives command for measurement open, it will go into continuous measuring mode;

If send: 11 03 0C 02 1E C0 // open particle measurement Respond: 16 02 0C 02 DA // the sensor module is under measurement open status

If send: 11 03 0C 01 1E C1 // close particle measurement Respond: 16 02 0C 01 DB // the sensor module is under measurement close status

4.4 Read Software Version Number Send: 11 01 1E D0 Response: 16 09 1E DF1 DF2 DF3 DF4 DF5 DF6 DF7 DF8 DF9 DF10 [CS] Function: Read software version Note: Software version=“DF1~DF10” Should change the HEX code to ASCII code. 4.5 Read Serial Number Send: 11 01 1F CF Response: 16 11 DF1…DF10 [CS] Function: Read serial number

Note: Serial number= DF1…DF10

Example: Response: 16 0B 1F 00 00 00 7E 09 07 07 0E 0D 72 9E Serial number: 126 2311 1806 3442


I2C Communication Protocol This is an I2C protocol for AM4100. The sensor module is lower computer, it is not able to initiate communication automatically. Communication is initiated via main control board, it reads data and sends control commands. Communication clock frequency is <=30 Khz. START: start signal, send by main controlled board. STOP: stop signal, send by main controlled board. ACK: acknowledge signal, send by the sensor module if in bold; otherwise, send by main controlled board; NACK: non-acknowledge signal, send by the sensor module if in bold; otherwise, send by main controlled board; Dx: receive and send data; send by the sensor module if in bold; otherwise, send by main controlled board. 3.1 Send Command Data Receive by main controlled board: START+WRITE+ACK+P1+ACK+ P2+ACK…… +P7+ACK+STOP

Data Byte Content Description

Device address Sensor address and read/write command

This byte is 0x50 when write data

P1 0x16 Frame header

P2 Frame length Number of byte, not including length of device address (From P1 to P7, 7 bytes in total)

P3 Data 1

Control command of the sensor as: Close measurement: 1 Open measurement: 2 Others: invalid

P4 Data 2, high byte Reserved

P5 Data 2 , low byte

P6 Reserve Reserved

P7 Data check code Check code= (D1^D2^……^D6)

1. Brief Introduction

2. Communication Common Description

3. Protocol Detailed Description


3.2 Read Data Command Send by main controlled board: START+READ+ACK+D1+ACK+D2+ACK+……+D25+NACK+STOP

Data Byte Content Description Device address

Sensor address and read/write command

This byte is 0x51 when read data.

P1 0x16 Frame header

P2 Frame length Number of byte, not including length of device address (from P1 to P22, 22 bytes in total)

P3 Sensor situation Close: 0 Open: 1

P4 Data 1, high byte CO2 concentration, unit: ppm

P5 Data 1, low byte

P6 Data 2, high byte VOC level , totally 4 levels: 0-3

P7 Data 2, low byte

P8 Data 3, high byte Humidity, unit: %RH (Humidity=measured value/10)

P9 Data 3, low byte

P10 Data 4, high byte Temperature, unit: ℃ (Temperature=(measured value-500)/10) P11 Data 4, low byte

P12 Data 5, high byte PM2.5, unit: ug/m3

P13 Data 5, low byte

P14 Data 6, high byte Reserved, default value is 0

P15 Data 6. high byte


P17 Data 7, high byte


P19 Data 8,high byte


P21 Data 9, high byte

P22 Data check code Check code = (P1^P2^……^P21)


Packing Information

Sensor per Tray Tray Qty Sensor per Carton Carton Dimensions Packing Material

12 pcs 10 layers 120 pcs 395*310*480 mm Red anti-static EPE

Tray Size

Tray Qty 10

Carton

After-Sales Services and Consultancy Wuhan Cubic Optoelectronics Co., Ltd. Tel: +86 (0)27 81628827 Fax: +86 (0)27 81628821 Add: Fenghuang No.3 Road, Fenghuang Industrial Park, Eastlake Hi-tech Development Zone, Wuhan 430205, China E-mail: [email protected]

integrated air quality sensor module am4100-i...

Documents