A vocs sensor

A sensor and sensor signal technology, applied in the field of sensors, can solve the problems of frequent battery replacement, high price, and inconvenient use, and achieve the effects of sensitive detection means, low cost, and strong practicability

Active Publication Date: 2019-04-05
NANJING CITY VOCATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to achieve a sustainable development strategy, strengthening environmental protection has become a basic national policy of our country. Therefore, real-time monitoring of VOCs is required. At present, the most common VOCs sensors generally use lithium battery power supply schemes to improve system stability, but the price is high. Moreover, the battery needs to be replaced frequently, which is inconvenient to use

Method used

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  • A vocs sensor

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Embodiment Construction

[0025] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0026] Such as figure 1 A VOCs sensor shown includes a main controller, a power supply, a sampling power supply module, a display, a sensor signal input and amplification module, an RS485 module, a keyboard, and a 4-20mA analog output module.

[0027] The power supply is an independent structure, and supplies power to the main controller, display, 4-20mA analog output module, RS485 module, and keyboard respectively, and a dedicated sampling power supply module is provided for the sensor signal input and amplification module,

[0028] The charging and discharging control signal of the sampling power supply module is connected to the P1.0 port of t...

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Abstract

The invention discloses a VOCs sensor comprising a main controller, a power supply, a sampling power supply module, a display, a sensor signal input and amplification module, an RS485 module, a keyboard, and a 4-20mA analog output module. The main controller, display, 4-20mA analog output module, RS485 module, keyboard power supply, a special sampling power supply module is provided for the sensor signal input and amplification module, and the charging and discharging control signal of the sampling power supply module is connected to into the P1.0 port of the main controller. The invention is simple in structure, low in cost, convenient and sensitive detection means, has incomparable advantages to other types of sensors for those gas leaks with very low concentration, and has strong practicability.

Description

technical field [0001] The invention belongs to the field of sensors, in particular to a VOCs sensor. Background technique [0002] In my country, VOCs (volatile organic compounds) refer to organic compounds with a saturated vapor pressure greater than 70Pa at normal temperature and a boiling point below 260°C at normal pressure, or a corresponding volatile compound with a vapor pressure greater than or equal to 10Pa at 20°C. all organic compounds. With the development of society, air pollution is becoming more and more serious, and volatile organic compounds emitted by enterprises are one of the important reasons for environmental air pollution, especially in chemical industry parks. In order to achieve a sustainable development strategy, strengthening environmental protection has become a basic national policy of our country. Therefore, real-time monitoring of VOCs is required. At present, the most common VOCs sensors generally use lithium battery power supply schemes in o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N35/00G01N33/00
Inventor 井辉桂超蔡洁刘力周刚张月田明君
Owner NANJING CITY VOCATIONAL COLLEGE
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