We all know that with the popularity of laser diodes, more and more industrial scenes are using laser diodes, so do you know how QSI laser diodes detect particulate matter? Let's take a look at it together.

With the continuous development of industrialization and urbanization, air quality has attracted more and more social attention. Whether it is fine particles such as PM2.5 and PM10, or dust monitoring in factories and laboratories, it is inseparable from accurate and stable detection methods. Among many detection technologies, particle detector based on laser scattering principle has become the mainstream. In this field, the laser diode of QSI in Korea has won high recognition in the market with its stable performance and excellent quality. As the general agent of Korean QSI laser diode in China, Longxingda Technology has been providing customers with high-quality laser devices and professional services for many years.

1. Why is particle detection inseparable from laser diodes?

The core principle of particle detection is to measure the scattering of laser light by particles in the air by optical means. When the light beam emitted by the laser diode meets the tiny particles suspended in the air, it will scatter or diffract. By collecting and analyzing the scattered light signal through the sensor, the concentration and particle size distribution of the particles can be obtained.

Compared with the traditional light source, laser diode has obvious advantages in particle detection:

1. Good monochromaticity: the wavelength is stable, which is convenient for algorithm modeling and data calibration.

2. Strong directivity: the beam is concentrated and the detection sensitivity is higher.

3. Small size and low power consumption: it is very suitable for miniaturization of air quality detection equipment.

Therefore, whether it is the sensor module in the air purifier or the professional environmental monitoring station, the laser diode is an indispensable key component.

Second, the advantages of QSI laser diode in particle detection

Although there are many laser diode brands in the market, QSI products are particularly outstanding in the application of particle detection, mainly in the following aspects:

1. Stable optical output

Particle detection equipment often needs to run continuously for a long time, and once the light source drifts, it will directly affect the accuracy of data. QSI laser diode adopts high-quality chip and advanced packaging technology, which ensures the stable output of optical power and effectively reduces the measurement error.

2. High wavelength accuracy

In the detection of particulate matter, the commonly used wavelengths are mostly infrared (such as 780nm, 808nm and 850nm), and the slight deviation of wavelengths will affect the detection sensitivity. QSI's laser diode has strict wavelength control, which makes the product still maintain high precision under different environmental conditions.

3. Long service life and strong reliability

QSI laser diode has passed the rigorous durability test and has the characteristics of long life and high reliability. This is very important for air monitoring equipment that needs 7×24 hours operation.

4. Excellent performance in low-power applications

Particle detection instruments usually do not need high power laser sources, but require stable output under low power conditions. QSI low-power laser diode has excellent performance in heat dissipation, spot quality and energy consumption, and is suitable for various portable or household detectors.

Third, typical application scenarios

QSI laser diode is widely used in the field of particle detection, mainly including:

Air quality monitor: urban environmental monitoring station, home air detector.

Air purifier: monitor the concentration of PM2.5 in the air in real time and adjust the purification mode intelligently.

Industrial dust monitoring: dust concentration monitoring in factories, workshops, mining areas and other environments.

Laboratory and scientific research instruments: used for researchers to study the characteristics and distribution of particulate matter.

In these applications, QSI laser diode not only ensures the detection accuracy, but also provides strong support for miniaturization and low energy consumption of equipment.

4. Longxingda Technology-QSI General Agent in China

As the general agent of Korean QSI laser diode in China, Longxingda Technology not only provides original genuine devices, but also pays more attention to providing customers with all-round technical support and solutions. From product selection, application design to after-sales guarantee, Longxingda can provide customers with one-stop service.

By choosing Longxingda, customers can not only get high-quality QSI laser diodes, but also enjoy:

Fast supply channel: ensure sufficient supply and meet the project schedule.

Technical support service: assist customers to complete circuit design and application development.

Long-term cooperation guarantee: as a general agent, we can provide customers with stable and reliable price and supply system.

As an important part of environmental monitoring, particulate matter detection has extremely strict requirements for light sources. With its stability, accuracy and high reliability, QSI laser diode has become the first choice for many manufacturers of particle detection equipment. In the future, with the continuous development of air treatment and smart home market, QSI laser diode will surely play a role in more applications. Longxingda Technology will continue to adhere to the concept of "professionalism, reliability and win-win" and bring better laser solutions to customers in China.