Overview
Automotive Alcohol Module is a module designed to detect the alcohol content in the driver’s exhaled gas. By accurately measuring the alcohol content, the module can effectively prevent drunk driving behaviors, thus safeguarding road traffic safety and the safety of people’s lives and properties. The module adopts an electrochemical fuel cell type alcohol sensor, together with an on-board temperature sensor to realize temperature compensation and ensure the accuracy and reliability of the measurement results. In addition, the module also integrates a pressure sensor, which can realize the blowing action detection to further ensure the authenticity of the measurement, and the measurement data can be transmitted through the serial signal, which is convenient to integrate with the electronic control system of the vehicle.
The automotive alcohol module works based on the electrochemical sensor principle. When the built-in pressure sensor detects the exhaled gas flowing through the pipe at a specific flow rate, the solenoid valve responds quickly and inhales a quantitative sample of the gas, and the sensor activates detection simultaneously. Alcohol and oxygen in the gas undergo a redox reaction within the sensor, releasing an electrical charge to form a current signal. The module detects the current intensity through the circuit, and determines the alcohol concentration after processing by the algorithm, realizing the accurate detection of breath alcohol content.
Key Features
- Highly accurate detection: Using advanced electrochemical sensor technology has extremely high sensitivity and accuracy to alcohol.
- Fast response: Able to complete the detection of alcohol concentration in a short time to ensure driving safety.
- Stable and reliable: Characterized by long life, high accuracy, high repeatability and high stability, applicable to various complex environments.
- Easy to install: The module is compact in design and easy to install, and can be seamlessly integrated with the vehicle.
- Intelligent control: Supporting a variety of communication protocols and output methods, it is easy to integrate with other in-vehicle equipment.
- Low power consumption: Reasonable design, low power consumption, suitable for long time working.
Applications
- Environmental detection: Air quality monitoring stations, intelligent furniture equipment.
- Industrial safety: Alcohol gas alarm system, portable detector.
- Medical and healthcare: Breath analysis equipment (alcohol detection).
- Traffic safety monitoring: Alcohol testing for drivers of vehicles in public transportation, logistics transportation, corporate fleets, personal vehicles, ports, mines and construction sites.
Technical Specifications
| Model No. | BL432 |
| Detection gas | Alcohol |
| Output | UART(5V TTL) |
| Working voltage | 12VDC(9~16V DC) |
| Sleeping current | <0.2mA |
| Maximum Operating Current | <3A |
| range | 0 ~ 2mg/l |
| Inaccuracy | Not more than±0.02mg/l or±10% of nominal value , whichever is greater |
| Working temperature | -40°C ~ 85°C |
| Working humidity | 15%RH~ 90%RH (no condensation) |
| Calibration period | 6 months |
| lifespan | 3 years |
| Blow flow rate | More than0.3L/s less than1L/s |
| Blow time | 3~5s |
