Programmable logic controller (PLC) based monitor and control generated system (MCGS) heat pump monitoring system and control method thereof

Abstract

The invention relates to a programmable logic controller (PLC) based monitor and control generated system (MCGS) heat pump monitoring system and a control method thereof and relates to a control device using a fluid heater of a heat pump. The PLC based MCGS heat pump monitoring system comprises a MCGS configuration computer, a PLC module, a remote water meter and an electric energy meter; the PLC module is connected with the remote water meter, a liquid level sensor, a temperature sensor, a make-up pump and a circulating pump; the PLC module is connected with the MCGS configuration computer and controls a water level of a water level and supply water temperatures of a hot water system of a heat pump according to unit control parameters sent by the MCGS configuration computer; the MCGS configuration computer is connected with the electric energy meter to obtain time-segmented electric energy consumption data of the hot water system of the heat pump; and a monitoring interface of the MCGS configuration computer real-timely monitors device states of a heat pump unit, displays alarming and maintenance alerting signals, and records device running and alarming states of the heat pump unit. The PLC based MCGS heat pump monitoring system has statistical functions of electric energy and water consumption, achieves centralized control and energy consumption management of an air source heat pump hot water system, and fully reflects energy saving advantages of the air source heat pump.

Description

technical field [0001] The invention relates to a control device for a fluid heater using a heat pump, in particular to a PLC-based MCGS heat pump monitoring system and a control method for an air source heat pump hot water system. Background technique [0002] With the development of air source heat pump water heaters becoming more and more mature, how to control air source heat pump water heaters has become a hot spot in the industry. In this ever-changing intelligent era, both the solar energy industry and the air-conditioning industry have tended to intelligent control, and it is imperative to replace traditional control methods with intelligent control in the air source heat pump industry. [0003] MCGS (Monitor and Control Generated System, general monitoring and control system) is a set of configuration software system used to quickly construct and generate the upper computer monitoring system, mainly completes the collection and monitoring of field data, the processi...

AI Technical Summary

Problems solved by technology

[0007] 1. Operation and management personnel are required to go to the site of the air source heat pump to operate the unit. The operation interface is small, and the main parameters cannot be seen at a glance. At the same time, the operation is cumbersome

There is no authority restriction for manual operation, anyone can operate the handheld device, and the security is not high

[0008] 2. In the case that several buildings need water supply, the handheld operator cannot perform centralized management; the lack of historical record function makes it impossible to find the historical data of each parameter

[0009] 3. The handheld operator cannot switch on and off at a fixed time according to the water demand, and cannot automatically adjust the water level of the water tank according to the daily water consumption

[0010] Although the above-mentioned existing systems proposed the MCGS touch screen control of the central air conditioner and the monitoring of the heat exchange station based on PLC and MCGS, none of them involved the control of the air source heat pump water heater unit, and did not take into account the energy consumption of the air source heat pump water heater unit Therefore, even if these technical solutions are used for the control of air source heat pump water heater units, they cannot well reflect the energy-saving advantages of air source heat pumps.

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