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Cross-sensitive self-inhibiting one-device-two-element semiconductor gas sensor system

A technology of gas sensors and binary semiconductors, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., and can solve problems such as cross-sensitivity

Inactive Publication Date: 2009-06-24
林继鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention mainly solves the technical problem of severe cross-sensitivity phenomenon in the use of existing gas sensors, and provides a gas sensor that can not only measure two gases at the same time, but also suppress cross-sensitivity caused by environmental quantities, and improve the accuracy of the main measurement. measurement accuracy

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  • Cross-sensitive self-inhibiting one-device-two-element semiconductor gas sensor system

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Embodiment Construction

[0013] see figure 1 , the sensor 1 of this system is respectively connected to the AD end of the signal processor 3 through the amplifier 2, and the figure 2 After the process shown in the figure is processed, it is sent out to the interface. The signal processor 3 includes a signal processing chip 31 , a temperature sensor 34 , a memory 32 and a clock 33 . Calibration data is stored in memory 32, and clock 33 provides timing for collecting the output of sensor 1 under temperature modulation. The signal processing chip adopts ST-2003F.

[0014] The system can also be equipped with an auxiliary sensor that can be selected as needed. The auxiliary sensor is not necessary, it is only an interface left for the future function expansion of the system. The auxiliary sensors are also respectively connected to the AD terminals of the signal processor 3 via the amplifier 2 . Optional auxiliary sensors include humidity sensor (such as Honeywell HIH3600 series, etc.), temperature se...

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Abstract

The invention relates to a semiconductor sensor, in particular to a cross-sensitive self-inhibiting one-device binary semiconductor gas sensor system. It includes a semiconductor gas sensor, the gas sensor is connected to the AD end of the signal processor through an amplifier, and the signal processor can perform support vector machine (Support Vector Machine, referred to as SVM) operation, which includes a signal processing chip, a temperature sensor, a memory, clock. It mainly solves the technical problem of serious cross-sensitivity phenomenon in the use of existing gas sensors, and provides a gas sensor that can not only measure two gases at the same time, but also suppress the cross-sensitivity caused by environmental quantities, and improve the measurement accuracy of the main measurement .

Description

【Technical field】 [0001] The invention relates to a semiconductor sensor, in particular to a cross-sensitive self-inhibiting one-device binary semiconductor gas sensor system. 【Background technique】 [0002] At present, the methane (CH4) sensors used in domestic mines all use catalytic combustion gas sensor elements, while most carbon monoxide (CO) sensors use electrochemical gas sensor elements. The inherent weaknesses of existing gas sensors are: (1) the design mechanism determines its short life and inconvenient storage; (2) a sensor can only detect one gas, and the price is expensive; (3) the cross-sensitivity phenomenon is serious, easy to It is polluted by the environment, which seriously limits its use occasions. 【Content of invention】 [0003] The present invention mainly solves the technical problem of severe cross-sensitivity phenomenon in the use of existing gas sensors, and provides a gas sensor that can not only measure two gases at the same time, but also su...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/407
Inventor 林继鹏刘西钉
Owner 林继鹏