Device and method for acquiring dioxin toxoid signals

A dioxin-like, signal acquisition technology, applied in the field of environmental detection, can solve the problems of weak optical signal, not being widely used, and expensive detection equipment, so as to improve measurement accuracy, remove background noise, and improve measurement accuracy Effect

Inactive Publication Date: 2013-03-13
GUANGZHOU BLT INSTR & METER
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Problems solved by technology

The problem with this method is that the light signal produced by dioxin-induced luciferase is very weak and has not b

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  • Device and method for acquiring dioxin toxoid signals

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Embodiment 1

[0035] Such as figure 1 As shown, a dioxin toxoid signal acquisition device described in this embodiment includes a power management module, a boost circuit, a photoelectric converter, an operational amplifier, a pulse discriminator, a divide-by-two counter, a control unit, and a digital-to-analog conversion device. When the device is running, the weak light emitted by the organism is converted into a weak electrical signal by the photoelectric converter, and then amplified by the operational amplifier and then transmitted to the pulse discriminator. The pulse discriminator is connected with a two-frequency counter to compare the signal voltage amplitude. When the pulse voltage amplitude exceeds the set threshold, a high-level signal is output and sent to the control unit through a frequency division counter; the control unit is connected to the pulse discriminator through a digital-to-analog converter to send the set pulse voltage amplitude threshold to the pulse discriminat...

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Abstract

The invention discloses a device and a method for acquiring dioxin toxoid signals. The device comprises a photoelectric converter, a calculation amplifier, a pulse discriminator, a two divided-frequency counter, a control device and a digital-to-analog converter, wherein weak light emitted from living beings is converted into weak electric signals through the photoelectric converter, and subsequently amplified through the calculation amplifier and transmitted to the pulse discriminator; the pulse discriminator compares the signal voltage amplitude; when the pulse voltage amplitude exceeds a set threshold, a high level signal is output and is transmitted to the control unit through the two divided-frequency counter; the control unit transmits the set pulse voltage amplitude threshold to the pulse discriminator through the digital-to-analog converter; and the control unit is connected with an upper computer. The components are all supplied with power by a power supply management module. A working voltage of the photoelectric converter is supplied by a boost circuit. The invention further discloses an acquisition method based on the device. By utilizing the device and the method, the microsignal amplification is rapidly realized, background noise is effectively eliminated, and the measurement precision is improved.

Description

technical field [0001] The invention relates to the technical field of environmental detection, in particular to a dioxin toxoid signal acquisition device and method. Background technique [0002] Dioxins are tricyclic aromatic organic compounds composed of one or two oxygen atoms connected to two chlorine-substituted benzene rings, including Polychlorinated dibenzo-p-dioxins (PCDDs for short) and polychlorinated dibenzo-p-furans (PCDFs for short), collectively referred to as dioxins. Because of its strong carcinogenicity, bioaccumulation and other hazards, it has been widely concerned by the international community. Dioxin is an organic pollutant produced unintentionally in the process of human production. It has a wide range of sources, and waste incineration is considered to be one of the main sources. [0003] At present, there are three methods widely used in the world to detect dioxins: chromatography (HRGC / HRMS), immunoassay (EIA) and bioassay. The advantage of chr...

Claims

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Application Information

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IPC IPC(8): G01N21/27G01N21/64
Inventor 罗文波
Owner GUANGZHOU BLT INSTR & METER
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