Back scattering smoke dust analyzer

Abstract

The invention discloses a back scattering smoke dust analyzer which continuously monitors the concentration of particulate matters in smoke emitted by a stationary pollution source and is mainly applied to the continuous real-time monitoring of the concentration of smoke dust in the smoke emitted by the stationary pollution source. The invention irradiates the smoke dust particles by using laser to produce scattering rays, detects the smoke dust concentration through obtaining back scattering light quantity, can furthest lower external disturbance, provides accurate measurement with wider range and obtain real concentration data through three-order polynomial fitting calculation at highest to primary acquisition signals. In addition, the invention can visually display human-computer interactive operation through an embedded low power consumption control system and the liquid crystal display of a big screen, and is greatly convenient for a user.

Description

Technical field: [0001] The invention belongs to environmental pollution monitoring equipment, in particular to a backscattering smoke analyzer, which is a device for continuously monitoring the concentration of particulate matter in flue gas discharged from fixed pollution sources, and is mainly used in smoke dust in flue gas continuously discharged from fixed pollution sources Continuous real-time monitoring of concentration. Background technique: [0002] At present, the detection of smoke concentration mainly includes the following two methods: [0003] One, the transmission method, its working principle is: the light quantity emitted by the laser diode of a single wavelength and the light quantity detected after passing through the chimney are used to detect the smoke concentration, and the light quantity emitted by the laser diode is compared (the reference light quantity, I R ) and the reduced amount of light absorbed by smoke and dust (detected light amount, I M ),...

AI Technical Summary

Problems solved by technology

This scheme can detect the amount of smoke and dust emitted from the chimney, but there are still some shortcomings: 1. The equipment has low efficiency, large measurement error, difficult to achieve high-precision measurement, unstable performance, and inconvenient installation and maintenance.

2. High cost, high energy consumption, easy to burn out, large size and high noise

3. The monitoring data cannot be sent directly to the CEMS data acquisition system through RS232, or network, or GPRS, nor can it be sent to the monitoring center of the Environmental Protection Bureau

[0006] This solution does not require both ends to be aligned with the center line in engineering installation, so it is relatively simple, but because it does not have a digital storage and forwarding function, it cannot be installed and used independently, and an external signal forwarding device must be connected

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