Three-stage signal amplification type automatic-control ventilating system

Abstract

The invention discloses a three-stage signal amplification type automatic-control ventilating system. The three-stage signal amplification type automatic-control ventilating system is characterized in that the three-stage signal amplification type automatic-control ventilating system is mainly composed of a programmable logic controller, a power source, an A / D converter, a memorizer, a ventilating control circuit, a three-stage signal amplification circuit, an air quality sensor and a ventilating device; the power source, the A / D converter, the memorizer and the ventilating control circuit are all connected with the programmable logic controller; the output end of the three-stage signal amplification circuit is connected with the A / D converter; the air quality sensor is connected with the input end of the three-stage signal amplification circuit; and the ventilating device is connected with the ventilating control circuit. The three-stage signal amplification type automatic-control ventilating system is simple in structure and low in cost; the programmable logic controller can judge whether the venting device needs to be started or not according to an indoor air quality signal collected by the air quality sensor, so that the ventilating device is made to stop working when the indoor air quality is good, the purpose of conducting ventilation automatically according to the condition of the peculiar smell generated in the environment is achieved accordingly, and the three-stage signal amplification type automatic-control ventilating system is suitable for application and popularization.

Description

Technical field [0001] The invention relates to a ventilation system, in particular to a three-stage signal amplification type automatic control ventilation system. Background technique [0002] At present, due to the rapid increase in urban population and urban development needs, urban buildings are becoming larger and larger. These huge buildings will be divided into separate and independent small spaces, and many of these separate and independent small spaces exist. A certain degree of sealing cannot ensure smooth circulation with the outside atmosphere, so the odors generated in these spaces are not easy to dissipate automatically. At present, ventilation equipment such as air conditioners or exhaust fans is usually used to ventilate, so as to disperse peculiar smell into the atmosphere and introduce fresh air from outside. However, most of the ventilation equipment is usually used as soon as people enter the room, or wait until people smell the peculiar smell and then turn ...

AI Technical Summary

Problems solved by technology

Odor gas is often not conducive to people's health. Waiting to smell the odor before ventilating means that the human body has inhaled the odor gas, and turning on the ventilation equipment will cause great waste. On the one hand, the ventilation equipment needs power consumption, and on the other hand On the one hand, keeping the ventilation equipment open all the time will also cause wear and tear on the equipment

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