Underground engineering ventilation air conditioning system based on PLC (programmable logic controller)

An air-conditioning system and underground engineering technology, applied in heating and ventilation control systems, heating and ventilation safety systems, space heating and ventilation, etc. Work environment comfort, equipment life and other issues

Inactive Publication Date: 2013-04-03
黄萩晴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A considerable part of the existing ventilation and air-conditioning equipment in underground projects is controlled manually. This kind of ventilation system not only needs to consume a lot of manpower, but also has a lot of randomness, which often leads to untimely ventilation and dehumidification, affecting The comfort of the working environment and the service life of the equipment increase the cost of operation and maintenance, which can no longer meet the requirements of modern society

Method used

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  • Underground engineering ventilation air conditioning system based on PLC (programmable logic controller)
  • Underground engineering ventilation air conditioning system based on PLC (programmable logic controller)

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Embodiment Construction

[0010] The present invention adopts PROFIBUS-DP communication mode, including a master station and a slave station, wherein the master station includes an industrial computer and a CP5611 communication card, and the slave station includes a single-chip microcomputer, a touch screen, a carbon dioxide sensor and an EM277 communication module.

[0011] The communication between the industrial computer and the PLC, and the communication between the PLC and the touch screen are all carried out through the RS485 interface, and the multi-point temperature and humidity parameter detector communicates with the industrial computer through RS232. The master station is also equipped with a UPS power supply, which can provide power for the industrial computer in case of a sudden power failure, so that the system can maintain continuous operation. Each PLC collects the corresponding equipment operating status, fault status, switch status and carbon dioxide parameters, and feeds back to the i...

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Abstract

The invention relates to an underground engineering ventilation air conditioning system based on PLCs (programmable logic controllers), belonging to the field of automatic control. The underground engineering ventilation air conditioning system based on the PLCs provided by the invention adopts a PROFIBUS-DP (decentralized periphery) communication method and comprises a master station and slave stations, wherein the master station comprises an industrial personal computer and a CP5611 communication card, and each slave station comprises a single-chip microcomputer, a touch screen, a carbon dioxide sensor and an EM277 communication module.

Description

technical field [0001] The invention belongs to the field of automatic control. Background technique [0002] Compared with surface engineering, the biggest feature of underground engineering is humidity. If regular ventilation and dehumidification are not carried out, it will have a great impact on the health of personnel and the normal use of equipment. A considerable part of the existing ventilation and air conditioning equipment in underground projects is manually controlled. This kind of ventilation system not only needs to consume a lot of manpower, but also has a lot of randomness, which often leads to untimely ventilation and dehumidification, affecting The comfort of the working environment and the service life of the equipment increase the cost of operation and maintenance, which can no longer meet the requirements of modern society. Contents of the invention [0003] The present invention aims at the problems mentioned above and provides a PLC-based underground...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 黄萩晴
Owner 黄萩晴
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