Digital interface method and system of hazardous chemical substance pointer instrument
A digital interface and pointer-type technology, which is applied in the direction of instruments, measured value indicators, and measuring devices, can solve the problems of power limitation, uneconomical, and difficulty in ensuring safe operation of the system, so as to improve economy, reduce safety risks, and reduce required effect
Active Publication Date: 2014-07-02
DALIAN UNIV OF TECH
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Problems solved by technology
In order to meet the requirements of memory and processor, sometimes it is even necessary to use computer to assist processing, which is not economical and difficult to ensure the safe operation of the system for the specific working conditions of hazardous chemicals
Second, due to the complexity of the digital image processing method, it is difficult to limit the electric energy entering the hazardous chemical site to a lower range, which increases the potential risk of hazardous chemical management
Method used
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[0016] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.
[0017] (I) Dangerous chemicals pointer instrument digital interface system
[0018] The optical signal receiving unit and the photoelectric conversion unit adopt the TCP1304AP line array CCD module produced by TOSHIBA Company as the core. Use 4 bright LEDs as the light source. The light source, the light signal receiving unit and the photoelectric conversion unit cooperate to form an electric signal of the position of the pointer in the instrument panel.
[0019] The processor unit adopts the STM32F103R8 single-chip microcomputer produced by ST Company as the core, and its functions mainly include pointer position conversion and output of pointer instrument indication value signals. The STM32F103R8 microcontroller contains two 12-bit A / D converters, 16 digital channels, and the conversion range is 0V to 3.6V.
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The invention relates to a digital interface method and system of a hazardous chemical substance pointer instrument and belongs to the technical field of intelligent instruments. The digital interface system of the hazardous chemical substance pointer instrument is characterized in that a processor unit is embedded into a converting algorithm of photovoltaic conversion unit signals and hazardous chemical substance pointer instrument pointer indicating value signals. The digital interface method of the hazardous chemical substance pointer instrument is characterized in that a calibration module and a data reading module are included, the calibration module corrects a hazardous chemical substance pointer instrument digital interface reading value, correcting parameters are stored into a storing unit, the processor unit obtains pointer position signals in a photovoltaic conversion unit, and the pointer position signals are correlated to the correcting parameters and are converted into digital signals of a hazardous chemical substance pointer instrument pointer indicating value. The method and system have the advantages that an optical non-contact type measuring technology is introduced into hazardous chemical substance pointer instrument pointer indicating value reading, hazardous chemical substance networking monitoring is achieved, and accordingly the safety of links such as hazardous chemical substance production, storage, conveying and using is improved.
Description
technical field [0001] The invention belongs to the technical field of intelligent instruments for hazardous chemicals, and relates to an interface method and system for a pointer instrument for hazardous chemicals, in particular to a digital interface method and system for an optical non-contact pointer instrument for hazardous chemicals. Background technique [0002] With the increase of the GDP of the national economy, the hazardous chemical industry has become one of the important industries supporting my country's national economic production. However, due to the special physical and chemical properties of hazardous chemicals, hazardous chemicals are essentially a commodity that poses a potential threat to the safety of people's lives and property. The safety management of each link in the production, storage, transportation, and use of hazardous chemicals has become a major issue for hazardous chemicals companies, An important topic concerned by relevant government dep...
Claims
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Inventor陈毅唐祯安余隽申爽黄正兴申宁
OwnerDALIAN UNIV OF TECH