Alcohol sensor in car
Drunk driving is one of the leading causes of traffic-related fatalities. Currently, traffic management departments around the world primarily rely on police checkpoints, patrols and intercepts, and reports from other individuals to crack down on drunk driving. These methods, however, have their drawbacks, such as low inspection efficiency and over-reliance on police enforcement experience, and they cannot comprehensively prevent drunk driving.
To prevent drunk driving more effectively and comprehensively, in-vehicle alcohol detection devices have attracted the attention of regulatory authorities and the industry. Commonly used overseas is an alcohol detection and engine interlock device (alcohol lock), which can prevent the engine from starting if the driver’s breath alcohol level is above the limit. At present, these devices are mainly installed after-market and are widely used in the United States and Europe.
On July 6, 2022, EU Regulation 2019/2144 came into effect. The regulation stipulates that from July 6, 2022, car manufacturers are obliged to equip new vehicle models with specific device interfaces during factory certification. From July 2024, all newly registered vehicles must use these interfaces and install relevant devices to avoid serious traffic accidents, including vehicle alcohol detection devices.
In in-vehicle alcohol detection devices, the Alcohol sensor in car is a key component. Commonly used sensor technologies in alcohol detection include semiconductor sensor technology, electrochemical sensor technology, colorimetric technology, infrared detection technology, and gas chromatography analysis technology, among which electrochemical sensor technology and semiconductor sensor technology are the most commonly used.
| Model Number | Model | Detection Range | Communication Method | Product Size | Product Features |
|---|---|---|---|---|---|
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FS00700A | 0~1.0mg/L |
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|
23.8×23.8×7.8mm |
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FS00700B | 0~500ppm |
/
|
8×8×7mm |
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FS00700C | 25~500ppm(Alcohol) |
/
|
8×8×7mm |
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|
FS00703 | 0～500mg/100ml (Blood alcohol concentration) |
UART (3.3V_TTL Voltage level)
|
90.5×32.0x13.6 mm |
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FS00702 | 0～500mg/100ml (Blood alcohol concentration) |
UART (3.3V_TTL Voltage level)
|
23.0×25.5×5.5 mm |
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FS00701 | 0～500mg/100ml (Blood alcohol concentration) |
UART (3.3V_TTL Voltage level)
|
19.3×17.0x5.4 mm |
|
Electrochemical Alcohol sensor in car
The electrochemical alcohol sensor in a car exhibits high measurement accuracy, good repeatability, excellent stability, and robust anti-interference capability. It operates in two modes: diffusion and pump suction. During the measurement process, alcohol and oxygen undergo redox reactions on the sensor’s working electrode and counter electrode, resulting in the release of charges and the generation of a current. The magnitude of the current is directly proportional to the alcohol concentration, allowing for the determination of whether the alcohol concentration is high or low by measuring the current.
Semiconductor Alcohol sensor in car
Breath alcohol detectors utilized in car-based semiconductor alcohol sensor technology employ semiconductor alcohol sensors. These sensors utilize a gas-sensitive material that is a semiconductor with low conductivity in clean air. When the sensor detects the presence of alcohol gas in the environment, the conductivity increases as the alcohol gas concentration in the air rises. A simple circuit can convert the conductivity change into a corresponding output signal.
