Automatic control system for ship controlled atmosphere and keeping greenness

Abstract

The invention discloses an automatic control system used for the ship modified atmosphere freshness-preservation. The automatic control system is characterized in that the system comprises three programmable logic controllers, a touch screen, a controlled device, a temperature-control meter, a switching-mode power supply, three detecting elements, a sensor transmitting box and an external power supply. The touch screen is connected with the three programmable logic controllers in virtue of communication interfaces and cables, output terminals of one side of the two programmable logic controllers are respectively connected with the controlled device, and the controlled device, one programmable logic controller, the temperature-control meter and the switching-mode power supply are all connected with the external power supply through two breakers. The sensor transmitting box is respectively connected with the switching-mode power supply and the detecting elements through leads, and the detecting elements and the sensor transmitting box are respectively connected through leads with input terminals of the other two programmable logic controllers. The automatic control system used for the ship modified atmosphere freshness-preservation has a high automatic level, an easy-control process and a high working efficiency and also is without potential safety hazards for equipments and operators. The automatic control system is suitable for controlling the automatic control of the modified atmosphere freshness-preservation equipment of ships.

Description

technical field [0001] The invention relates to an automatic control system. Specifically, it is an automatic control system used to control the modified atmosphere fresh-keeping equipment on the ship. Background technique [0002] At present, there are only modified atmosphere fresh-keeping equipment and control systems for land use, and no reports have been seen about modified atmosphere fresh-keeping equipment and control systems for ships. The control system of land-use air-conditioning fresh-keeping equipment consists of the air compressor electric control part, the cold dryer electric control part, the nitrogen generator electric control part, the ethylene removal machine electric control part, the carbon dioxide electric control part, the humidifier electric control part, The electronic control part of the ventilator, the electronic control part of the storage pressure balance and the oxygen and carbon dioxide detector are composed. Although the use of this control ...

AI Technical Summary

Problems solved by technology

It can be seen that the electronic control parts are scattered, not only the automation of the entire control system is low, but also the operation is more troublesome and the work efficiency is low.

And because the electronic control parts are scattered, there is no interlocking relationship between the electronic control parts, which brings unsafe hidden dangers to equipment and operators

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