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Some FAQ about the dust sensor

Update: 2019-12-17 17:27 Source: LUFTMY Reading: ↻ News

1. What kind of product does the dust sensor belong to?

The dust of cigarettes, cloth, broom and bed are collectively referred to as house dust. Dust sensor is a kind of sensor module which can sense the dust of living environment by detecting the change of light quantity and output voltage.

2. What is the principle of dust sensor?

From the light through the gap of the curtain, we can see a lot of shiny dust particles. We can count the number of particles through the dust sensor. Specifically, it is to simplify the way of measuring the light scattering of the particles in the clean room and apply it to household appliances.

3. What is the degree of sensitivity?

In the room with 6-8 seats, 3-4 lit cigarettes are put into the room, and the output is full open. In the case of smoking, about 0.5 cigarettes are put into the room, and the output is full open

4. What are the uses of dust sensors?

Air cleaner, ventilator, air conditioner and other air conditioning facilities operation control sensor;

Sensors used in environmental monitoring (air pollution management) of waiting rooms in homes, offices and hospitals.

5. What should be paid attention to during installation?

Because the detection principle requires a weak updraft in the module, so the module installation should pay attention to the up and down placement. In addition, in order to prevent the external strong air flow from entering the module from the air intake and exhaust port so as to disturb the internal air flow, it is necessary to install a shell or baffle on the module.

6. Is the optical lens polluted?

In the design of module structure, it is considered that the air flow inside the module does not contact the lens, so the lens can not be polluted as much as possible, but it can not be avoided for a long time. If the lens is polluted, the sensitivity will be affected. At this time, the lens cover can be opened and wiped with cotton rod and water.

(cleaning method)

① wipe all the lenses with a cotton stick soaked in water

② wipe the water on the lens with a dry cotton rod

7. What kind of products are similar to this?

Air purifier
Air purifier

In order to sense the peculiar smell of tobacco, some household air purifiers use gas sensors. However, gas sensors cannot sense indoor dust.

8. What is the function of dust sensor used in air purifier?

In the current field of air purification, PM2.5 dust particle sensor has almost become the standard accessory of purification equipment, whose function is to monitor and detect the concentration of PM2.5 and other particles in the air.

The laser dust sensor module can continuously collect and calculate the number of suspended particles with different particle sizes in the air per unit volume, that is, the particle concentration distribution, and then convert it into mass concentration, and output it in the form of general digital interface.

LD11 Laser dust sensor
LD11 Laser dust sensor

Dust sensor manufacturer LUFTMY——the sensor LD11 of dust concentration detector has the characteristics of small volume, high precision, strong anti-interference ability, low power consumption, long service life, short response time of zero error alarm rate, etc. the dust sensor module of this dust sensor can be embedded with various instruments related to the concentration of suspended particles in the air, such as PM2.5 detection instrument or environmental improvement equipment, to provide timely and accurate concentration data.

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