Vehicle Gas Leak Alarm

The key role of flammable alarm in vehicle

In recent years, there have been many safety accidents in China in which the leakage of natural gas compressed steel cylinders in taxis caused explosions and fires.

Cars using natural gas as fuel can save nearly half of the cost. Driven by economic interests, most taxi drivers tend to switch to natural gas cars. It is understood that the main reason for the explosion of the natural gas vehicle is the quality and stability of the gas cylinder. In most cities, there are no qualified manufacturers for modification or formal inspection agencies for natural gas compression cylinders for taxis, but the number of modified gas taxis is increasing day by day. Natural gas vehicles travel through the streets of the urban, with great fluidity and instability, and there are considerable hidden dangers.

ZE12 vehicle gas module

▲ ZE12 vehicle gas module

Winsen has ZP11 vehicle gas sensor module for vehicle gas leak alarm device, designed for the whole machine development of vehicle gas leak alarm, using thick film semiconductor gas sensor and high performance wide temperature MCU, suitable for complex environments in the car, with excellent stability and shock resistance, accurate measurement of each measurement point in the car through temperature compensation, monitoring of gas concentration in the car in real-time, once gas leakage occurs, the module will transmit the leakage signal to the controller to close the magnetic valve to cut off gas supply lines to avoid danger. It can be independently installed in the detection part of the vehicle for secondary development, which not only shortens the development cycle, but also ensures high-precision detection.

Vehicle Gas Leak Alarm

A customized car gas alarm

Vehicle Gas Leak Alarm

Built-in sensor: Semiconductor natural gas sensor (MP-4).

Installation location: At the outlet of the gas cylinder in the trunk and in the engine compartment

Installation quantity: 2 detectors for passenger cars, 4-6 detectors for commercial vehicles

Functions: Monitoring of spontaneous combustion explosions caused by leakage of natural gas tanks in passenger cars and commercial vehicles



Flat Semiconductor Methane MP-4 Sensor

MP-4 model with advanced planar construction is comprised of heater and metal oxide semiconductor material of subminiature Al2O3 ceramic plate, fetch out electrode down-lead, encapsulation in metal base and cap. When the target gas exists, the sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, convert change of conductivity to correspond output signal of gas concentration.

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How to choose the right sensor for your project?

We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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The first six FAQs. Use the search bar above to reveal more!

Can the Two Voltages of Mq-7 Exist All the Time, or Do They Need to Be Powered Alternately? if It is an Alternate Power Supply, What is the Appropriate Power Supply Time?

It requires alternate power supply. Please check the information on the product manual. This sensor is powered by 1.5V and 5V alternately. The low temperature and low voltage (1.5V) state can detect CO, and the high voltage (5V) is the desorption process. The recommended 5V voltage duration is 60s, 1.5V voltage duration is 90s to alternately supply power. Since it is a desorption process at 5V, it is normal for the voltage to drop when CO is 150ppm.

What is the Difference Between Semiconductor Sensors and Electrochemical Sensors?

There is no good linear correspondence between the gas concentration and voltage of the semiconductor sensor, and it is generally only used for fixed-point calibration products; there is a good linear correspondence between the gas concentration and the output current of the electrochemical sensor, and can be made into quantitative detection products.

What Are the Precautions for Manual Soldering of Semiconductor Sensors?

1. Flux: rosin flux with the least chlorine; 2. Constant temperature soldering iron; 3. Temperature: 250℃; 4. Time: no more than 3 seconds.
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