Ozone concentration intelligent measurement and control apparatus for fruit and vegetable cold storage and environment space

Abstract

The invention provides an ozone concentration intelligent measurement and control apparatus for a fruit and vegetable cold storage and an environment space. The apparatus comprises three main parts, namely a two-wire system ozone transmitter; a system control box consists of an intelligent measurement and control instrument, a micro computer time control switch, a solid state relay and a 24V DC source; and an ozone generator. The two-wire system ozone transmitter is installed in the fruit and vegetable cold storage and the environment space; the ozone concentration change inside the cold storage is converted to 4-20 milliampere current change and is output to the intelligent measurement and control instrument by exchanging the ozone sensor on the two-wire system ozone transmitter with the gas inside the fruit and vegetable cold storage, and then compared with a parameter set on the intelligent measurement and control instrument to emit a relay on-off signal; the micro computer time control switch can set different processing times and intervals based on requirement to connect the intelligent measurement and control instrument relay and the micro computer time control switch relay in series, so that the intelligent measurement and control instrument relay and the micro computer time control switch relay can control the on-off of the solid state relay together, and the purpose of automatically controlling the on-off of the ozone generator is realized.

Description

technical field [0001] The invention belongs to the special intelligent measurement and control device for fruit and vegetable storage and preservation, grain depot antibacterial and mildew prevention, food processing factory and hospital disinfection and sterilization. More specifically, it relates to an intelligent ozone concentration measurement and control device for fruit and vegetable cold storage and environmental space. Background technique [0002] Post-harvest fruits and vegetables are living organisms, accompanied by a series of mature and aging changes centered on respiratory metabolism, the quality continues to decline, and eventually deteriorates. At present, the common methods of fruit and vegetable storage and preservation include: (1) Storage in simple storage places. Its characteristic is to make the best use of natural cold sources and other favorable natural geographical conditions (such as storage in earthen caves, caves, etc.); (2) storage in cold stor...

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Problems solved by technology

[0007] At present, the ozone generating devices used in fruit and vegetable cold storage, environmental disinfection treatment, and grain storage do not use ozone concentration measurement sensors, nor do they have automatic and precise concentration control devices. The actual ozone concentration obtained in the use space is not clear, so it brings a lot of blindness to the use

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