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 ...

Examples

Embodiment Construction

[0009] As shown in the accompanying drawings, the automatic control system for air-conditioned fresh-keeping of ships of the present invention contains three programmable logic controllers 15, 16 and 17, a communication port 14, a touch screen 7, a controlled device 8, a temperature control table 9, three A detection element 12, 13 and 18, a sensor transmission box 11 and an external power supply 1. The touch screen 7 is connected with three programmable logic controllers 15, 16 and 17 by means of a communication interface 14 and cables. One of the output terminals of the programmable logic controllers 15 and 16 is connected with the controlled equipment 8 respectively by wires, and the controlled equipment 8 is connected with the external power supply 1 through the circuit breaker 3, the circuit breaker 2 and the wires, and the circuit breaker 3, The wires between the circuit breakers 2 are connected to the programmable logic controller 15 and the temperature controller 9 thr...

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 ...

Examples

Embodiment Construction

[0009] As shown in the accompanying drawings, the automatic control system for air-conditioned fresh-keeping of ships of the present invention contains three programmable logic controllers 15, 16 and 17, a communication port 14, a touch screen 7, a controlled device 8, a temperature control table 9, three A detection element 12, 13 and 18, a sensor transmission box 11 and an external power supply 1. The touch screen 7 is connected with three programmable logic controllers 15, 16 and 17 by means of a communication interface 14 and cables. One of the output terminals of the programmable logic controllers 15 and 16 is connected with the controlled equipment 8 respectively by wires, and the controlled equipment 8 is connected with the external power supply 1 through the circuit breaker 3, the circuit breaker 2 and the wires, and the circuit breaker 3, The wires between the circuit breakers 2 are connected to the programmable logic controller 15 and the temperature controller 9 thr...

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