Miniature pm2.5 detection sensor
A detection sensor and miniature technology, which is applied in the direction of measuring devices, scientific instruments, individual particle analysis, etc., can solve the problems of restricting product promotion and application, and achieve the effect of simple structure, meeting detection needs, and small size
Active Publication Date: 2017-07-28
JIANGSU SUJING GROUP
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Problems solved by technology
Several manufacturers at home and abroad have launched several handheld PM2.5 detectors based on the principle of optical particle counting. Their prices range from several thousand yuan to tens of thousands of yuan, which exceeds the expectations of most individuals or families. Limiting the promotion and application of such products in the market
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[0022] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0023] Reference attached figure 1 to attach image 3 , the miniature PM2.5 detection sensor in the present embodiment, it comprises substrate 100, the incident light channel that is arranged on the substrate 100, the detection light channel and the gas channel 5 that offers on the substrate 100, incident light channel, detection light channel and The two gas channels 5 are vertical and intersect, and the three intersect at the same place. The intersection is the detection area 6. The incident light channel includes an incident optical fiber 1 connected to the laser at one end and connected to the substrate 100 at the other end. The micro-cylind...
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Abstract
The invention discloses a micro particulate matter 2.5 (PM2.5) detection sensor which comprises a substrate as well as an incident light channel, a detection light channel and a gas channel formed in the substrate, wherein every two of the incident light channel, the detection light channel and the gas channel are perpendicular to each other and are intersected; the intersection part is used as a detection area; the incident light channel comprises an incident optical fiber of which one end is connected with a laser and the other end is connected to the substrate, and a micro cylindrical lens group which is used for converging light to a central position of the detection area; the detection light channel comprises a detection optical fiber of which one end is connected with a detection device and the other end is connected to the substrate, and a reflection mirror arranged at the bottom of the detection area. By adopting the technical scheme, the micro PM2.5 detection sensor is integrated onto a quartz glass chip, is small in size, simple in structure and convenient to achieve, the manufacturing cost of a sensor is lowered, and the PM2.5 detection requirements of common people are met.
Description
technical field [0001] The invention relates to a detection device for measuring PM2.5 pollution concentration in the atmosphere, in particular to a miniature PM2.5 detection sensor based on the principle of optical particle counting, which is suitable for personal or family PM2.5 concentration detection. Ordinary civilian market demand. Background technique [0002] In the face of frequent severe smog weather, air pollution has become a common concern of the whole society. PM2.5 concentration is one of the key indicators to evaluate the degree of air pollution. More and more ordinary people hope that they can test the concentration of atmospheric PM2.5 pollution. PM2.5 refers to aerosol particles with an aerodynamic particle size of less than 2.5 microns in the atmosphere. The current PM2.5 detection methods mainly include weighing method, micro-oscillating balance method, β-ray method and light scattering method. The measurement process of the weighing method is compli...
Claims
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IPC IPC(8): G01N15/14
Inventor 孙吉勇沈玮栋梁凤飞唐红阳周大农
Owner JIANGSU SUJING GROUP