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Sensor array signal processing method for liquor smell detection

A sensor array and signal processing technology, applied in physical realization, biological neural network model, material resistance, etc., can solve problems such as the influence of detection results, low reliability of alcohol gas detection devices, and poor alcohol selectivity

Inactive Publication Date: 2008-02-06
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0002] Most of the existing alcohol detection devices use a single alcohol sensor as a sensitive unit, only using the steady-state response signal of the sensor and ignoring the dynamic response signal containing rich information. These alcohol detection devices have low reliability and poor selectivity to alcohol
People improve the performance of sensors and detection devices by improving sensitive materials and using filter membranes, but some interfering gases in the environment such as gasoline and perfume will still have a great impact on the detection results
Some people propose to use multiple sensors for certain atmosphere detection, such as Chinese patent 00127299, but simply compare the output signals of each sensor with the preset threshold, the performance of the whole system is still unsatisfactory

Method used

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  • Sensor array signal processing method for liquor smell detection
  • Sensor array signal processing method for liquor smell detection
  • Sensor array signal processing method for liquor smell detection

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Embodiment

[0052] Implement the intelligent " wine gas detector " of the inventive method, as shown in Figure 3, be by semiconductor gas sensor array 1, gas sampling module 2, signal processing and control module 3, input and output module 4, communication module 5 and power supply and The power management module consists of 6 components. Where sensor array 1 consists of four SnO 2 The gas sampling module 2 is composed of a membrane pump, PTFE pipeline and sensor chamber, and the signal processing and control module 3 is composed of a 51 series single-chip microcomputer and peripheral circuits.

[0053] Intelligent wine gas detector of the present invention works by the process shown in Figure 4. When working, start the system through the input and output module 4, the gas to be measured contacts the sensor array 1 through the gas sampling module 2, the sensor array 1 is preheated, the signal processing and control module 3 collects the whole process of the response of the sensor array ...

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Abstract

The present invention relates to gas detecting and mode identification technology, and is especially the signal processing method in alcohol smell detection. Sensor array is used in detecting and processing the dynamic response process from beginning response to final restoring, and artificial nerve network technology is adopted for mode identification. The present invention has effectively raised alcohol smell detecting selectivity, can eliminate the effect of gasoline, perfume, etc. and compensate the drift of alcohol sensitive sensor array, and has self-calibrating function and lower calibration frequency.

Description

technical field [0001] The invention relates to the technical field of gas detection and pattern recognition, in particular to a signal processing method for alcohol gas detection. Background technique [0002] Most of the existing alcohol gas detection devices use a single alcohol sensor as a sensitive unit, only using the steady-state response signal of the sensor and ignoring the dynamic response signal containing rich information. These alcohol gas detection devices have low reliability and poor selectivity to alcohol . People improve the performance of sensors and detection devices by improving sensitive materials and using filter membranes, but some interfering gases in the environment, such as gasoline and perfume, will still have a great impact on the detection results. Someone proposes to use multiple sensors for certain atmosphere detection, such as Chinese patent 00127299, but simply compares the output signals of each sensor with the preset threshold, and the pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/04G06N3/06
Inventor 高晓光李建平贾建何秀丽
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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