Haze detecting device based on schlieren measurement technology and haze detecting method

Abstract

The invention provides a haze detecting device based on a schlieren measurement technology and a haze detecting method and relates to the field of air detection. The haze detecting device comprises alight source, a collimating lens, a focusing lens, a blade, a photoelectric detector and an image recognition module, wherein the collimating lens, the focusing lens, the blade and the photoelectric detector are arranged in sequence along the path of light signals; an air testing area is formed between the collimating lens and the focusing lens; the image recognition module is connected with the photoelectric detector in an electric-signal manner, and the photoelectric detector is used for receiving the light signals gathered by the focusing lens, converting the light signals into electric signals and then transferring the electric signals to the image recognition module; the image recognition module is used for reconstructing images and calculating the average density of air in an air-haze detecting area. The haze detecting device provided by the invention has the beneficial effects that the schlieren measurement technology is combined with the air-haze detecting device, and a devicefor detecting the haze by utilizing optical images is creatively designed; compared with the original haze detector, the method has the advantages of fastness, convenience, accurate result and energyconservation and the like.

Description

technical field [0001] The present invention mainly relates to the field of air quality detection, in particular to a haze detection device and a haze detection method based on Schlieren measurement technology. Background technique [0002] Haze is a mixture of fog and haze. Fog is a natural weather phenomenon, and water vapor is dense in the air. The core substances of haze are substances such as smoke and dust suspended in the air. The gas can directly enter and adhere to the lower respiratory tract and lung lobes of the human body, which is harmful to human health. Traditional smog detection devices have certain shortcomings, such as power consumption, and it is inconvenient to dissipate heat as a whole when the device is working. [0003] In the prior art, Chinese patent: a haze detector system (CN205449743U), comprising a haze detection device and a monitoring terminal wirelessly connected to the haze detection device, the monitoring terminal is connected to a monitor...

AI Technical Summary

Problems solved by technology

However, this device is carried by an unmanned aerial vehicle, which requires a professional operator to operate, and has high requirements for the stability of the equipment, which greatly increases the cost of haze detection, and the use of this device to detect haze Detection takes a lot of energy

[0004] In addition, the equipment in the prior art detects the content of particulate matter and harmful substances in the air, and can only detect them quantitatively. Such a detection method is relatively simple, and the detection results often have certain deviations.

Images