Fermion MEMS Formaldehyde HCHO Gas Detection Sensor Documentation

Operating Temperature

-20C to 50C

Operating Humidity

20% to 80% RH

Power Supply

3.3V to 5V

Communication Interface

I2C, UART

Response Time

<10 seconds

Detection Range

0-10 ppm

Sensitivity

0.01 ppm

Accuracy

10% of reading

Storage Temperature

-40C to 80C

Applications

Air quality monitoring

Industrial process control

Indoor air pollution detection

Environmental monitoring

Medical and healthcare applications

HVAC (heating, ventilation, and air conditioning) systems

Package and Dimensions

Package Type

QFN-12

Dimensions

3.0 mm x 3.0 mm x 0.95 mm

Certifications and Compliance

CE certified

RoHS compliant

REACH compliant

The Fermion MEMS Formaldehyde HCHO Gas Detection Sensor is a highly sensitive, fast-responding, and low-power gas detection solution ideal for a wide range of applications. Its compact design, digital output, and calibration-free operation make it an attractive option for developers and manufacturers of IoT devices and systems.

Pin Configuration

Fermion MEMS Formaldehyde HCHO Gas Detection Sensor Pinout and Connection Guide
The Fermion MEMS Formaldehyde HCHO Gas Detection Sensor is a highly sensitive and accurate gas detection module designed for IoT and industrial applications. This sensor module has 6 pins, each with a specific function. Here is a detailed explanation of each pin and how to connect them:
Pinout:
1. VCC (Power Supply)
Function: Power supply for the sensor module
Voltage: 3.3V to 5.5V
Connection: Connect to a stable power source (e.g., a battery or a voltage regulator)
2. GND (Ground)
Function: Ground connection for the sensor module
Connection: Connect to the ground of the power source or the ground plane of the PCB
3. OUT (Analog Output)
Function: Analog signal output from the sensor, proportional to the detected HCHO gas concentration
Signal type: Analog voltage
Signal range: 0.5V to 4.5V (depending on the gas concentration)
Connection: Connect to an analog-to-digital converter (ADC) or an analog input of a microcontroller
4. INT (Interrupt)
Function: Interrupt signal output from the sensor, triggered when the gas concentration exceeds a certain threshold
Signal type: Digital signal (active low)
Connection: Connect to an interrupt-capable pin of a microcontroller or a digital input of a logic circuit
5. RST (Reset)
Function: Reset input for the sensor module
Signal type: Digital signal (active low)
Connection: Connect to a digital output of a microcontroller or a reset signal generator
6. ADDR (Address)
Function: Address input for I2C communication (optional)
Signal type: Digital signal
Connection: Leave unconnected if I2C communication is not used. Otherwise, connect to the corresponding I2C address pins of other devices.
Connection Structure:
Here is an example connection structure for the Fermion MEMS Formaldehyde HCHO Gas Detection Sensor:
VCC -> Power source (e.g., battery or voltage regulator)
GND -> Power source ground or PCB ground plane
OUT -> Analog-to-digital converter (ADC) or microcontroller analog input
INT -> Microcontroller interrupt-capable pin or digital input of a logic circuit
RST -> Microcontroller digital output or reset signal generator
ADDR -> Leave unconnected (or connect to I2C address pins if necessary)
Important Notes:
Make sure to provide a stable power supply to the sensor module within the recommended voltage range.
Use a suitable analog-to-digital converter or microcontroller with an analog input to process the analog output signal from the sensor.
Ensure proper grounding and shielding to minimize electromagnetic interference (EMI) and noise.
Refer to the sensor module's datasheet and documentation for specific connection diagrams and application notes.

Code Examples

Fermion MEMS Formaldehyde HCHO Gas Detection Sensor Documentation

Overview

The Fermion MEMS Formaldehyde HCHO Gas Detection Sensor is a high-precision, low-power gas sensor designed to detect formaldehyde (HCHO) in the air. This sensor uses Micro-Electro-Mechanical Systems (MEMS) technology to provide accurate and reliable measurements of formaldehyde concentrations. It is ideal for use in various IoT applications, including air quality monitoring, industrial safety, and smart home devices.

Pinout

The Fermion MEMS Formaldehyde HCHO Gas Detection Sensor has a standard 6-pin interface:

VCC: 3.3V power supply
 GND: Ground
 SCL: I2C clock pin
 SDA: I2C data pin
 INT: Interrupt pin (optional)
 ADDR: Address pin (optional)

Communication Protocol

The sensor uses the I2C protocol for communication. It supports standard I2C bus speeds up to 400 kHz.

Code Examples

Example 1: Basic Gas Concentration Measurement using Arduino

This example demonstrates how to use the Fermion MEMS Formaldehyde HCHO Gas Detection Sensor with an Arduino board to measure the gas concentration in parts per billion (ppb).

```cpp
#include <Wire.h>

#define HCHO_SENSOR_ADDRESS 0x48

void setup() {
  Serial.begin(9600);
  Wire.begin();
}

void loop() {
  int sensorData = readSensorData();
  float hchoConcentration = calculateHCHOConcentration(sensorData);
  Serial.print("HCHO Concentration: ");
  Serial.print(hchoConcentration);
  Serial.println(" ppb");
  delay(1000);
}

int readSensorData() {
  Wire.beginTransmission(HCHO_SENSOR_ADDRESS);
  Wire.write(0x00); // Register address for HCHO concentration data
  Wire.endTransmission();
  Wire.requestFrom(HCHO_SENSOR_ADDRESS, 2);
  int sensorData = Wire.read() << 8;
  sensorData |= Wire.read();
  return sensorData;
}

float calculateHCHOConcentration(int sensorData) {
  // Calibration formula provided by the manufacturer
  return (sensorData  0.01) - 10.0;
}
```

Example 2: Using the Sensor with Raspberry Pi and Python

This example demonstrates how to use the Fermion MEMS Formaldehyde HCHO Gas Detection Sensor with a Raspberry Pi and Python to measure the gas concentration in parts per million (ppm).

```python
import smbus
import time

HCHO_SENSOR_ADDRESS = 0x48
bus = smbus.SMBus(1)

def read_sensor_data():
    bus.write_byte(HCHO_SENSOR_ADDRESS, 0x00)  # Register address for HCHO concentration data
    time.sleep(0.1)  # Wait for the sensor to respond
    sensor_data = bus.read_word(HCHO_SENSOR_ADDRESS)
    return sensor_data

def calculate_hcho_concentration(sensor_data):
    # Calibration formula provided by the manufacturer
    return (sensor_data  0.01) - 10.0

while True:
    sensor_data = read_sensor_data()
    hcho_concentration = calculate_hcho_concentration(sensor_data)
    print(f"HCHO Concentration: {hcho_concentration:.2f} ppm")
    time.sleep(1)
```

Note: The calibration formulas used in the examples are placeholders and may need to be adjusted based on the specific sensor module and environmental conditions. Please consult the manufacturer's documentation for accurate calibration information.