CN-121977267-A - Multi-sensor multi-unit automatic cooperative control method for water source heat pump air conditioning system

CN121977267ACN 121977267 ACN121977267 ACN 121977267ACN-121977267-A

Abstract

The invention discloses a multi-sensor multi-unit automatic cooperative control method of a water source heat pump air conditioning system, which belongs to the field of air conditioning systems, solves the problem of higher energy consumption in the prior art, and adopts the technical scheme that the method comprises the steps of carrying out linkage decision according to real-time data of a plurality of distributed sensors and preset weights, setting graded first and second temperature threshold intervals, constructing graded regulation and control logic, when the temperature does not exceed the first threshold, the current running state of the unit is maintained, when the temperature exceeds the first threshold and does not exceed the second threshold, the sensor with the largest deviation degree from the threshold is positioned, and the single unit of the unit which does not run is orderly started from large to small according to the weight, so that more accurate and low-energy-consumption intervention is realized, and when the temperature exceeds the second threshold, all air conditioning units in the subarea are started, and the extreme deviation is restrained as fast as possible. The invention realizes cooperative control and reduces energy consumption.

Inventors

ZHANG TIANYI
WANG BIN
YING FANG

Assignees

杭州能工科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260227

Claims (10)

1. The multi-sensor multi-unit automatic cooperative control method of the water source heat pump air conditioning system is characterized by comprising the following steps of: S1, dividing a target area into a plurality of control subareas, wherein each control subarea is provided with at least two temperature sensors and at least two air conditioning units, and a regulation and control weight relation between each air conditioning unit and each temperature sensor is established; S2, acquiring real-time temperature data monitored by all temperature sensors in each control zone; s3, judging whether the temperature monitored by the temperature sensor exceeds a first temperature threshold interval, if so, executing S5, and if not, executing S4; S4, maintaining the running state of the current air conditioning unit; S5, judging whether the temperature monitored by the temperature sensor exceeds a second temperature threshold interval, wherein the upper limit of the second temperature threshold interval is higher than the upper limit of the first temperature threshold interval, the lower limit of the second temperature threshold interval is lower than the lower limit of the first temperature threshold interval, if so, executing S6, and if not, executing S7; s6, controlling all air conditioning units in a control zone where the temperature sensor exceeding the second temperature threshold value zone is located to start operation; And S7, determining a temperature sensor with the greatest degree deviating from the first temperature threshold interval, and selecting and starting an unoperated air conditioning unit to operate according to the sequence from the large weight to the small weight based on the regulation weight relation in the S1.
2. The multi-sensor multi-unit automatic cooperative control method based on the water source heat pump air conditioning system according to claim 1, wherein when the temperature detected by the temperature sensor exceeds the lower limit of the first temperature threshold interval or the lower value of the second temperature threshold interval, after executing S5, whether the air conditioning unit operates the refrigeration mode within the preset protection time is judged, if yes, S6 or S7 is delayed to execute until the preset protection time expires, and if not, S6 or S7 is allowed to directly execute.
3. The multi-sensor multi-unit automatic cooperative control method based on the water source heat pump air conditioning system according to claim 1, wherein before executing S7, the operation mode of the air conditioning unit is judged, if the air conditioning unit is in the operation mode to be executed S7, and other operation modes different from the operation mode to be executed S7 are all in the closed state, S7 is not executed, otherwise S7 is continuously executed.
4. The multi-sensor multi-unit automatic cooperative control method based on the water source heat pump air conditioning system according to claim 1, wherein before executing S7, it is judged whether the operation time of the air conditioning unit in the temperature adjustment period of the last same temperature adjustment type is greater than a preset temperature adjustment time, if yes, S7 is executed, otherwise S7 is not executed, and the operation scheme of the air conditioning unit in the temperature adjustment period of the last same temperature adjustment type is used.
5. The multi-sensor multi-unit automatic cooperative control method based on a water source heat pump air conditioning system according to claim 1, wherein after completing S3 to S7 control operations, the steps of: s8, each control partition is provided with at least two humidity sensors, and a regulation and control weight relation between the air conditioning unit and the humidity sensors in each control partition is established; s9, acquiring real-time humidity data of humidity sensors in each control partition, judging whether the humidity exceeds the limit, if so, executing S10, otherwise, keeping the current running state of the air conditioning unit; And S10, only starting the single air conditioning unit with the largest regulation weight to enter a dehumidification operation mode, and not executing dehumidification operation by the rest air conditioning units.
6. The multi-sensor multi-unit automatic cooperative control method based on the water source heat pump air conditioning system according to claim 5 is characterized in that after S9 is executed, whether the temperature monitored by any one of the temperature sensors in the control partition is not lower than a preset dehumidification allowable temperature threshold value is judged, if yes, S10 is executed, if not, S10 is not executed, and refrigerating and dehumidifying operations are forbidden.
7. The automatic cooperative control method of multiple sensors and multiple units based on a water source heat pump air conditioning system according to claim 5, wherein if the temperature detected by the temperature sensor does not exceed the temperature limit and no humidity overrun exists, the method is performed: s11, judging whether the temperatures monitored by all the temperature sensors are lower than the temperature limit minus the temperature return difference, if yes, executing S12, otherwise, keeping the current running state; S12, judging whether the humidity monitored by all the humidity sensors is lower than the humidity limit minus the humidity return difference, if yes, executing S13, otherwise, maintaining the current running state; and S13, stopping the operation of all air conditioning units in the control partition.
8. The method of claim 7, wherein the temperature limit comprises a first temperature threshold interval or a second temperature threshold interval.
9. The multi-sensor multi-unit automatic cooperative control method based on the water source heat pump air conditioning system according to claim 5, further comprising a fan cooperative control step: s20, judging whether the maximum temperature difference monitored by the temperature sensor in the control partition is not less than the starting temperature of the fan, if so, setting all air conditioning unit fans in the partition to be continuous, and if not, executing S21; s21, judging whether the maximum humidity difference monitored by the humidity sensor in the control partition is not less than the starting temperature of the fan, if so, setting all air conditioning unit fans in the partition to be continuous, and if not, executing S22; S22, judging whether the maximum temperature difference monitored by the temperature sensor in the control partition is smaller than the stop temperature difference of the fan, and simultaneously controlling whether the maximum humidity difference monitored by the humidity sensor in the partition is smaller than the stop humidity of the fan, if so, executing S23, and if not, keeping the current running mode; s23, setting the compressor and the fan of all the air conditioning units in the control partition to be synchronous.
10. The automatic cooperative control method of multiple sensors and multiple units based on water source heat pump air conditioning system according to claim 5, wherein the regulation weight relation in S1 and S8 is established by the following steps: S30, sequentially and independently starting each air conditioning unit in the control partition, closing each air conditioning unit after starting operation for preset minutes, and restarting the next air conditioning unit at intervals of preset minutes; S31, recording the temperature variation of each temperature sensor during the operation of each air conditioning unit; s32, taking the absolute value of the temperature variation as the regulation weight of each air conditioning unit corresponding to each temperature sensor.

Description

Multi-sensor multi-unit automatic cooperative control method for water source heat pump air conditioning system Technical Field The invention relates to the field of air conditioning systems, in particular to a multi-sensor multi-unit automatic cooperative control method of a water source heat pump air conditioning system. Background In the scenes of extremely strict requirements on environmental temperature and humidity, such as medical warehouses, the storage safety of medicines is directly related to public health, so that the control on the temperature and humidity in the warehouse must be highly accurate and stable. At present, part of medical warehouses adopt a water source heat pump air conditioning system as a main environmental regulation means. The water source heat pump air conditioning system is generally composed of a plurality of independent air conditioning units, and two sets of systems are commonly configured, wherein one set of system is a monitoring system for collecting and uploading temperature and humidity data of each monitoring point in real time, and the other set of system is an air conditioning management system for remotely regulating and controlling the running state and parameters of the air conditioning units. However, the prior art has the obvious defects that the air conditioning unit is started and stopped only according to the sensor signal of the return air position of the air conditioning unit, the position is often far away from the monitoring point required by supervision, when temperature and humidity deviation occurs in a remote area, the response of the system is seriously lagged, and in order to overcome the defect, an operator usually deliberately regulates down the set temperature of the air conditioning unit, and the set temperature can be barely maintained to reach the standard, but energy waste is caused, and the temperature control precision is difficult to ensure. In addition, each air conditioning unit operates in isolation, a unified coordination mechanism is lacking, when the refrigerating or heating capacity of a single device is insufficient to cover the whole area, other air conditioning units cannot be actively linked to work cooperatively, and only the adjacent air conditioning units can be passively waited for to start automatically due to local temperature rise, so that the temperature and humidity fluctuation in a warehouse is large, the uniformity is poor, and the severe requirements of medicine storage on the environmental stability and the control accuracy are difficult to meet. Disclosure of Invention The invention aims to provide the multi-sensor multi-unit automatic cooperative control method of the water source heat pump air conditioning system, which solves the problem of higher energy consumption in the prior art, realizes cooperative control and reduces energy consumption. In order to achieve the purpose, the invention adopts the following technical scheme that the method comprises the following steps: S1, dividing a target area into a plurality of control subareas, wherein each control subarea is provided with at least two temperature sensors and at least two air conditioning units, and a regulation and control weight relation between each air conditioning unit and each temperature sensor is established; S2, acquiring real-time temperature data monitored by all temperature sensors in each control zone; s3, judging whether the temperature monitored by the temperature sensor exceeds a first temperature threshold interval, if so, executing S5, and if not, executing S4; S4, maintaining the running state of the current air conditioning unit; S5, judging whether the temperature monitored by the temperature sensor exceeds a second temperature threshold interval, wherein the upper limit of the second temperature threshold interval is higher than the upper limit of the first temperature threshold interval, the lower limit of the second temperature threshold interval is lower than the lower limit of the first temperature threshold interval, if so, executing S6, and if not, executing S7; s6, controlling all air conditioning units in a control zone where the temperature sensor exceeding the second temperature threshold value zone is located to start operation; And S7, determining a temperature sensor with the greatest degree deviating from the first temperature threshold interval, and selecting and starting an unoperated air conditioning unit to operate according to the sequence from the large weight to the small weight based on the regulation weight relation in the S1. After the technical scheme is adopted, the intelligent temperature control system has the advantages that linkage decision is carried out according to the real-time data of the distributed temperature sensors and the preset weight, gradient first and second temperature threshold intervals are set, grading regulation and control logic is constructed, the current running state of the