Control system for combined air conditioning unit and fresh air processing unit

Abstract

The invention discloses a control system for a combined air conditioning unit and a fresh air processing unit, and the system comprises a data collection module which is used for collecting the environment information of different monitoring positions; and the intelligent gateway calculation processing module is used for calculating engineering parameters according to the environment information and the working state signals of the monitoring components, then determining adjustment information of the specified monitoring component at a specified position according to the engineering parameters by using control processes in different scenes, and sending the adjustment information to the monitoring component. The adjustment information comprises at least one monitoring parameter of the monitoring component and an adjustment amount or a regulation and control instruction corresponding to each monitoring parameter; the output control module is used for transmitting a corresponding control signal to a specified monitoring component according to the adjustment information; and the signal feedback module is used for collecting working state signals of at least one monitoring parameter of the monitoring components at different positions in the working area.

Description

Technical Field

[0001] The present invention relates to the technical field of building intelligent operation and maintenance, and in particular to a control system for a modular air handling unit and a fresh air handling unit. Background Art

[0002] At present, the key equipment of a large number of large buildings such as office buildings, shopping centers, hotels, hospitals, etc. has basically achieved automatic control, and some of them have even achieved building intelligence, but there is still a lack of fine adjustment of key equipment.

[0003] Therefore, the prior art needs to provide a fine remote monitoring solution for modular air handling units and fresh air handling units in buildings. Summary of the Invention

[0004] The purpose of the present invention is to provide a fine remote monitoring solution for modular air handling units and fresh air handling units in buildings.

[0005] To solve the above technical problems, an embodiment of the present invention provides a control system for a modular air handling unit and a fresh air handling unit, including: a data acquisition module for collecting environmental information at different monitoring positions; an intelligent gateway calculation and processing module for calculating engineering parameters according to the environmental information and the working state signals of monitoring components, and then determining adjustment information for a specified monitoring component at a specified position according to the engineering parameters and using control processes in different scenarios, where the adjustment information includes at least one monitoring parameter of the monitoring component and the adjustment amount or control instruction corresponding to each monitoring parameter; an output control module for transmitting corresponding control signals to the specified monitoring component according to the adjustment information; and a signal feedback module for collecting the working state signals of at least one monitoring parameter of the monitoring components at different positions in the work area.

[0006] Preferably, the control system further includes: a cloud processing module communicating with the intelligent gateway calculation and processing module, for diagnosing the rationality of the impact of the current adjustment operation on the comfort state of the entire work area according to the adjustment information, and sending the adjustment information that passes the rationality diagnosis to the output control module, where the comfort state of the work area at least includes the matching between the adjustment amount and the adjustment ability of the controlled component, the influence degree of the temperature, humidity and noise at the monitoring position point on the surrounding personnel, and the real-time change trend and deviation of each operating parameter of the monitoring component.

[0007] Preferably, the cloud processing module is further used to alarm abnormal points for the adjustment information that fails to pass the rationality diagnosis.

[0008] Preferably, the cloud processing module is further configured to map the monitoring position points, monitoring parameters, and adjustment amounts in the current adjustment information to a pre-constructed coupling simulation model of the operation of the work area unit, simulate the predicted values of the monitoring parameters at each monitoring position point in the current work area caused by the current adjustment operation, and couple all the predicted values to determine whether there is a phenomenon that the comfort state of at least one position point in the entire work area exceeds the corresponding threshold. If so, locate the current abnormal position point. Among them, the coupling simulation model of the operation of the work area unit can predict whether the current component to be regulated can complete the adjustment of the current adjustment amount, the influence relationship between any two position points, the influence degree of the real-time state of a single position point on the surrounding personnel, the real-time change trend of each operating parameter of each monitoring component, and the deviation trend between the real-time change amount and the corresponding threshold according to the real-time temperature, real-time humidity, and real-time operating noise at different monitoring position points in the work area space.

[0009] Preferably, the cloud processing module and the intelligent gateway computing and processing module are connected through the MQTT protocol.

[0010] Preferably, the monitoring components include chilled water valves, hot water valves, humidifiers, heaters, and fans; the engineering parameters include supply air absolute humidity, dew point temperature, and enthalpy value.

[0011] Preferably, when the engineering parameter is the absolute humidity of the supply air, the intelligent gateway calculation and processing module is further configured to calculate the absolute humidity of the supply air according to the inlet air temperature and humidity and the supply air temperature and humidity of the fan, and use the air-conditioning fresh air unit regulation and control process according to the inlet and supply air temperatures and the absolute humidity of the supply air to perform dynamic control of the unit working state, including: obtaining the real-time time, and when the target time is reached, outputting regulation information for setting the opening degrees of all valves to 0 and a fan start control signal; outputting a fan start control signal, and judging the working state of the fan according to the working state signals of all monitoring components, wherein, when not started, outputting regulation information for setting the opening degrees of the chilled water valve and the hot water valve to 0; in the case of normal start of the fan, performing multi-mode regulation on the fan according to the inlet and supply air temperatures and the absolute humidity of the supply air, including: when the inlet air temperature reaches or exceeds the first temperature threshold, outputting regulation information for closing the hot water valve, and when the inlet air temperature reaches or exceeds the first temperature threshold and the absolute humidity of the supply air reaches the first humidity threshold, entering the fan frequency regulation mode, the fan frequency regulation mode being outputting regulation information for setting the opening degree of the chilled water valve to 100%, and then when the time for maintaining the current temperature and humidity state reaches the first time threshold, outputting regulation information for maintaining the working frequency of the fan at the target frequency; when the inlet air temperature reaches or exceeds the first temperature threshold, outputting regulation information for closing the hot water valve, and when the inlet air temperature reaches or exceeds the first temperature threshold, the absolute humidity of the supply air does not reach the first humidity threshold, the absolute humidity of the supply air reaches or exceeds the second humidity threshold, and the time for maintaining the current temperature and humidity state reaches the second time threshold, entering the first type of cooling and dehumidification regulation mode, the first type of cooling and dehumidification regulation mode being outputting regulation information for adjusting the opening degree of the chilled water valve so that the adjusted absolute humidity of the supply air reaches the intermediate humidity threshold, the first humidity threshold being greater than the second humidity threshold, and the intermediate humidity threshold being less than the first humidity threshold and greater than the second humidity threshold; when the inlet air temperature reaches or exceeds the first temperature threshold and the absolute humidity of the supply air does not reach the second humidity threshold, entering the second type of cooling and dehumidification regulation mode, the second type of cooling and dehumidification regulation mode being outputting regulation information for closing the chilled water valve; when the inlet air temperature does not reach the first temperature threshold and the inlet air temperature does not reach the second temperature threshold, entering the first type of heating regulation mode, the first type of heating regulation mode being outputting regulation information for closing the chilled water valve and adjusting the opening degree of the hot water valve so that the adjusted supply air temperature approaches the second temperature threshold, the second temperature threshold being higher than the first temperature threshold; when the inlet air temperature does not reach the first temperature threshold and the inlet air temperature reaches or exceeds the second temperature threshold, entering the second type of heating regulation mode, the second type of heating regulation mode being outputting regulation information for closing the hot water valve.

[0012] Preferably, when the engineering parameter is the dew point temperature, the intelligent gateway calculation and processing module is further configured to calculate the dew point temperature of the corresponding monitoring location and determine the average dew point temperature according to the temperature and humidity at different indoor monitoring locations. Then, based on the average dew point temperature and the supply air temperature of the fan, the dynamic control of the unit working state is carried out by using the air conditioning fresh air unit regulation and control process, including: obtaining the real-time time, and when the target time is reached, outputting the regulation information for setting the opening degrees of all valves to 0 and the fan start control signal; outputting the fan start control signal, and judging the working state of the fan according to the working state signals of all monitoring components. Among them, when not started, output the regulation information for setting the opening degrees of the chilled water valve and the hot water valve to 0; in the case of normal fan start, regulate the fan according to the average dew point temperature and the supply air temperature of the fan, including: when the inlet air temperature does not reach the dew point temperature threshold, output the regulation information for adjusting the opening degree of the chilled water valve, and then when the time for maintaining the current inlet air temperature state reaches the first time threshold, output the regulation information for adjusting the opening degree of the fresh air valve, so that the adjusted supply air temperature exceeds the dew point temperature threshold for a certain time and the indoor is not in a condensation state.

[0013] Preferably, when the engineering parameter is enthalpy value, the intelligent gateway calculation and processing module is further configured to calculate the mixed air temperature and the supply air enthalpy value according to the inlet air temperature and the supply air temperature of the fan, and use the air conditioning fresh air unit regulation and control process to perform dynamic control of the unit working state based on the mixed air temperature and the supply air enthalpy value, including: obtaining the real-time time, and when the target time is reached, outputting regulation information for setting the opening degrees of all valves to 0 and a fan start control signal; outputting the fan start control signal, and judging the working state of the fan according to the working state signals of all monitoring components, wherein, when not started, outputting regulation information for setting the opening degrees of the chilled water valve and the hot water valve to 0; in the case of normal start of the fan, performing multi-mode regulation on the fan based on the mixed air temperature and the supply air enthalpy value, including: when the mixed air temperature reaches or exceeds the first temperature threshold, outputting regulation information for closing the hot water valve, and when the mixed air temperature reaches or exceeds the first temperature threshold and the supply air enthalpy value reaches the first enthalpy value threshold, entering the fan frequency regulation mode, the fan frequency regulation mode being outputting regulation information for setting the opening degree of the chilled water valve to 100%, and then when the time for maintaining the current mixed air temperature and supply air enthalpy value state reaches the first time threshold, outputting regulation information for maintaining the fan working frequency at the target frequency; when the mixed air temperature reaches or exceeds the first temperature threshold, outputting regulation information for closing the hot water valve, and when the mixed air temperature reaches or exceeds the first temperature threshold, the supply air enthalpy value does not reach the first enthalpy value threshold, the supply air enthalpy value reaches the second enthalpy value threshold, and the time for maintaining the current mixed air temperature and supply air enthalpy value state reaches the second time threshold, entering the first type of cooling and dehumidification regulation mode, the first type of cooling and dehumidification regulation mode being outputting regulation information for adjusting the opening degree of the chilled water valve so that the adjusted supply air enthalpy value reaches the intermediate enthalpy value threshold, the first enthalpy value threshold being greater than the second enthalpy value threshold, and the intermediate enthalpy value threshold being less than the first enthalpy value threshold and greater than the second enthalpy value threshold; when the mixed air temperature reaches or exceeds the first temperature threshold and the supply air enthalpy value does not reach the second enthalpy value threshold, entering the second type of cooling and dehumidification regulation mode, the second type of cooling and dehumidification regulation mode being outputting regulation information for closing the chilled water valve; when the mixed air temperature does not reach the first temperature threshold and the supply air enthalpy value reaches or exceeds the third enthalpy value threshold, entering the first type of heating regulation mode, the first type of heating regulation mode being outputting regulation information for closing the hot water valve; when the mixed air temperature does not reach the first temperature threshold and the supply air enthalpy value does not reach the third enthalpy value threshold, the second type of heating regulation mode, the second type of heating regulation mode being outputting regulation information for closing the cold water valve and adjusting the opening degree of the hot water valve so that the adjusted supply air enthalpy value approaches the third enthalpy value threshold.

[0014] Preferably, the output control module is further configured to output a control signal that meets the conditions of the component type control interface according to the type of the currently regulated and monitored component, and the output mode of the control signal is selected from one of an analog signal, a digital signal, and an RS485 communication signal.

[0015] Compared with the prior art, one or more embodiments of the above solution may have the following advantages or beneficial effects:

[0016] The present invention proposes a control system for a combined air handling unit and a fresh air handling unit. The control system includes a data acquisition module, an Internet of Things intelligent gateway computing and processing module, an output control module, a signal feedback module, and a cloud processing module. Among them, the data collected by the acquisition module is transmitted to the Internet of Things intelligent gateway computing and processing module, and then transmitted to the cloud processing module for viewing cloud data and real-time calculation and analysis. Using a variety of built-in functions and process controls, the results obtained from the calculation and processing are sent to the output control of specific devices, and the specific devices transmit the operation status to the signal feedback module to check the real results. By judging and analyzing the working state data and environmental data fed back by the monitoring components, the present invention formulates different processing procedures, thereby sending different output signals to different monitoring components and different types, which can save more energy and resources, make the on-site specific environment and on-site equipment highly matched and adapted, complete the actions required by the equipment with the least resources, do not consume redundant resources, make full use of resources, optimize the resource usage scenario, and save unnecessary resources.

[0017] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in the specification, the claims, and the drawings. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the first example of the control system for a combined air handling unit and a fresh air handling unit according to an embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the overall structure of the second example of the control system for a combined air handling unit and a fresh air handling unit according to an embodiment of the present application.

[0021] Figure 3Schematic diagram of the fan start control process of the intelligent gateway calculation and processing module in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0022] Figure 4 Schematic diagram of the control process of the fan frequency regulation mode of the intelligent gateway calculation and processing module when the engineering parameter is the absolute humidity of the supply air in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0023] Figure 5 Schematic diagram of the control process of the cooling and dehumidification regulation mode of the intelligent gateway calculation and processing module when the engineering parameter is the absolute humidity of the supply air in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0024] Figure 6 Schematic diagram of the control process of the heating regulation mode of the intelligent gateway calculation and processing module when the engineering parameter is the absolute humidity of the supply air in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0025] Figure 7 Schematic diagram of the control process of the intelligent gateway calculation and processing module when the engineering parameter is the dew point temperature in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0026] Figure 8 Schematic diagram of the control process of the fan frequency regulation mode of the intelligent gateway calculation and processing module when the engineering parameter is the enthalpy value in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0027] Figure 9 Schematic diagram of the control process of the cooling and dehumidification regulation mode of the intelligent gateway calculation and processing module when the engineering parameter is the enthalpy value in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment.

[0028] Figure 10 Schematic diagram of the control process of the heating regulation mode of the intelligent gateway calculation and processing module when the engineering parameter is the enthalpy value in the second example of the control system for the modular air handling unit and fresh air handling unit of this application embodiment. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly. It should be noted that as long as there is no conflict, the various embodiments in the present invention and the various features in each embodiment can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0030] In addition, the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0031] The terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a" and "an" used herein are also intended to include the plural. It should also be understood that the terms "comprising" and / or "including" used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, integers, steps, operations, units, components, and / or their combinations.

[0032] To solve the technical problems in the above background art, an embodiment of the present application proposes a control system for a combined air conditioning unit and a fresh air handling unit. This control system uses the Internet of Things technology to superimpose edge computing control means to replace the local control of the traditional building automation system, which is convenient for staff to view and analyze data. That is, the control unit devices of the combined air conditioning unit and the fresh air handling unit are optimized and transformed by using the self-developed Internet of Things intelligent gateway and the supporting cloud website. Through the data feedback from local sensors and remote sensors in the cloud, real-time calculation and analysis are carried out. After obtaining the calculation results, different solution processes are executed, and proportional-integral settings or on-off settings are output to the actuators of the air handling unit and the fresh air handling unit, such as chilled water valves, hot water valves, humidifiers, heaters, fans, etc., to meet the indoor air conditioning design parameter requirements, reduce energy consumption and improve the effective utilization of resources.

[0033] Figure 1 It is a schematic diagram of the overall structure of the first example of the control system for the combined air conditioning unit and the fresh air handling unit according to the embodiment of the present application. As Figure 1 shown, the control system described in the embodiment of the present invention at least includes: a data acquisition module, an intelligent gateway calculation and processing module, an output control module, and a signal feedback module.

[0034] Specifically, the data acquisition module is used to collect environmental information at different monitoring locations (points). In the embodiments of the present invention, the area where the installed combined air conditioning unit and fresh air handling unit are applied is used as the working area, and multiple monitoring location points are set in the working area. Among them, different monitoring location points include, but are not limited to: the installation positions of all monitoring components, the monitoring blind spot location points, such as key monitoring points with a relatively high density of personnel gathering, etc.

[0035] The signal feedback module is used to collect the real-time working status signals and data of at least one monitoring parameter of the monitoring components at different positions in the working area.

[0036] The intelligent gateway calculation and processing module is used to calculate at least one engineering parameter required for current regulation according to the collected environmental information and the real-time working status signals and data of all monitoring components. Then, according to the engineering parameters, using the control processes in different scenarios, it determines the adjustment information of the specified monitoring component (the specified monitoring component refers to the monitoring component to be regulated) at the specified position (the specified position refers to the monitoring position point to be regulated). In the embodiments of the present invention, the adjustment information includes at least one monitoring parameter of the monitoring component and the adjustment amount or control command corresponding to each monitoring parameter.

[0037] In one embodiment, the output control module can communicate directly with the intelligent gateway calculation and processing module. When the output control module communicates directly with the intelligent gateway calculation and processing module, the output control module is used to send corresponding control signals to the specified monitoring component according to the adjustment information from the intelligent gateway calculation and processing module, so that the regulated specified monitoring component reaches the corresponding regulation target according to the current control signal.

[0038] In the embodiments of the present invention, the monitoring components include, but are not limited to: chilled water valves, hot water valves, humidifiers, heaters, fans, etc.

[0039] In addition, in one embodiment, the above output control module is further used to output a control signal that meets the conditions of the component type control interface according to the type of the currently regulated monitoring component. Among them, the output mode of the output control signal is selected from one of the analog signal, digital signal, and RS485 communication signal.

[0040] Figure 2 This is the overall structure diagram of the second example of the control system for the combined air conditioning unit and fresh air handling unit in the embodiments of the present application. As Figure 2 shown, in addition to including the data acquisition module, intelligent gateway calculation and processing module, output control module, and signal feedback module, the control system described in the embodiments of the present invention further includes: a cloud processing module.

[0041] The cloud processing module communicates directly with the above-mentioned intelligent gateway computing processing module. When the cloud processing module communicates directly with the above-mentioned intelligent gateway computing processing module, the above output control module communicates directly with the intelligent gateway computing processing module.

[0042] In one embodiment, the cloud processing module and the intelligent gateway computing processing module are connected to the network through the MQTT protocol.

[0043] In the embodiment of the present invention, the data acquisition module consists of various types of sensor components and other information collectors, which collect the environmental data at different monitored locations in real time and transmit it to the intelligent gateway computing processing module in real time. Among them, the data transmission methods of environmental information are analog acquisition, digital acquisition, and RS485 communication method for data acquisition.

[0044] The intelligent gateway computing processing module is configured with ports for stably receiving various data and built-in conversion functions, which can successfully convert into readable environmental data, and use different collector composition methods and the positions of monitored locations according to different user requirements.

[0045] The Internet of Things intelligent gateway computing processing module performs light logic programming and program flow control on various types of data collected in the data acquisition module through its own LUA computing programming function, and processes and calculates the data according to requirements. Different execution schemes are implemented for different data. Different demand scenarios correspond to different programming analysis control processes to achieve the effective utilization of resources.

[0046] The processing logic and flow control are configured into the gateway through the supporting configuration software, and the gateway can run continuously according to the configuration in the software. The environmental data collected by the data acquisition module is set as an uploadable variable in the software. Edit the LUA code program in the software programming interface, and the variable can perform operations such as function calculation, assignment, and flow control, and edit the control process based on the LUA code according to user requirements. The LUA code is a kind of light logic code, which is simple, fast, and convenient to write. Since it is self-edited LUA code, different codes can be customized to adapt to different demand scenarios.

[0047] In the embodiment of the present invention, the programmable module in the intelligent gateway computing processing module has a variety of pre-packaged engineering parameter calculation functions for use. Among them, the engineering parameters include but are not limited to: dew point temperature, absolute humidity, enthalpy value, etc. In addition, a PID control algorithm combining the position method and the quarter method is used to complete the calculation of the adjustment amount of the control process under different scenario requirements.

[0048] The networking function in the intelligent gateway computing and processing module is implemented through the 4G module embedded in the Internet of Things intelligent gateway, and the network connection is made through 4G or WIFI. Data is transmitted to the cloud processing module through the MQTT protocol and specific connection parameters. When the gateway is disconnected from the network, it will immediately reconnect, ensuring continuous real-time networking.

[0049] In addition, the OTA upgrade is realized by modifying the logic operation program of the Internet of Things intelligent gateway through the cloud processing module. The intelligent gateway provides real-time feedback on the upgrade process and results to achieve a convenient and fast modification method.

[0050] In the embodiment of the present invention, the cloud processing module is used to rationally diagnose the impact of the current adjustment operation on the comfort state of the entire work area according to the adjustment information from the intelligent gateway computing and processing module, and send the adjustment information that passes the rationality diagnosis to the output control module. Among them, the comfort state of the work area at least includes: the matching between the adjustment amount and the adjustment ability of the regulated component, the impact of the temperature, humidity and noise at all monitored location points on the surrounding personnel, and the real-time change trend and deviation of the operating parameters of all monitored components.

[0051] In addition, the cloud processing module is also used to alarm abnormal position points for the adjustment information that fails to pass the rationality diagnosis.

[0052] The cloud processing module communicates with the intelligent gateway computing and processing module through the MQTT protocol and specific connection parameters to achieve one-to-one device connection, with the advantages of stable transmission and high accuracy.

[0053] The cloud processing module receives the uploaded data and the adjustment information for control through the transmission protocol and specific connection parameters. Through the data calculation function, the cloud can calculate and process the real-time uploaded data and then output it to the data model points, perform real-time calculations, and transmit the calculation results to the point model in real-time.

[0054] Specifically, the cloud processing module is also used to map the monitored location points, monitored parameters and adjustment amount in the current adjustment information to a pre-constructed coupling simulation model of the operation of the work area unit, simulate the predicted values of the monitored parameters at all monitored location points in the current work area caused by the current adjustment operation, and couple all the predicted values to determine whether there is an abnormal phenomenon that the comfort state of at least one location point in the entire work area exceeds the corresponding threshold.

[0055] In one embodiment, if there is at least one location point with an abnormal phenomenon, the current abnormal location point is located. At this time, the current adjustment information fails to pass the rationality diagnosis.

[0056] In another embodiment, if there is no position point where an abnormal phenomenon occurs, the current adjustment information passes through a rationality diagnosis, and the current adjustment information is sent from the cloud processing module to the local output control module.

[0057] In the embodiment of the present invention, the coupling simulation model of the working area unit operation is a simulation model based on a three-dimensional model. This simulation model can predict whether the currently regulated component can complete the adjustment of the current adjustment amount, the influence relationship between any two position points, the influence degree of the real-time state of a single position point on the surrounding personnel, whether the currently regulated component can complete the adjustment of the current adjustment amount, the real-time change trend of the operating parameters of each monitoring component, and the deviation trend between the real-time change amount and the corresponding threshold value according to the environmental data such as the real-time temperature, real-time humidity, and real-time operating noise at different monitoring position points in the working area space.

[0058] When the output capacity, adjustable frequency, or step size of the currently controlled component cannot meet the current adjustment amount requirement, or there is a situation where the influence degree of the real-time temperature, humidity, or noise at other position points on the comfort of the surrounding personnel caused by the adjustment operation at a certain position point exceeds the preset proportional threshold, or there is a situation where at least one of the real-time temperature, humidity, or noise after adjustment at a certain position point exceeds the preset abnormal threshold of the corresponding parameter type, or there is a situation where the change amount of at least one of the real-time temperature, humidity, or noise after adjustment at a certain position point exceeds the preset change threshold of the corresponding parameter type, or there is a situation where the change deviation amount of at least one of the real-time temperature, humidity, or noise after adjustment at a certain position point compared with that before the specified time period exceeds the preset deviation threshold of the corresponding parameter type, then it is determined that there is at least one abnormal position point currently; otherwise, there is no abnormal position point.

[0059] The cloud processing module can display and save the dynamic change curve and historical operation curve of the actual state data of each position point in the working area in real time, and realize real-time and on-site viewing of device data on the network side.

[0060] The output module issues a control output signal to the output port of the specified monitoring component at the specified position through the adjustment information data obtained by the calculation and processing of the Internet of Things intelligent gateway or sent from the cloud, so as to use this control signal to control the behavior of the currently regulated component.

[0061] The signal feedback module is used to obtain the real-time working state signals and data of different detection components during operation in the working area, and transmit the feedback signals and data to the intelligent gateway calculation and processing module, so that the intelligent gateway calculation and processing module can monitor the real response situation realized by the corresponding control signal. Through the feedback signal, problems generated during device operation can be detected in time, the problem location can be found in time, and a solution can be formulated.

[0062] For example: The fresh air unit of the air conditioner in Building A.

[0063] Use the built-in voltage input port AIV of the gateway to collect valve feedback data and upload it to the cloud. By defining the normal range of the feedback signal, use the cloud-triggered alarm function to judge the feedback signal. If the difference between the input voltage value of the feedback and the output voltage value of the control valve is greater than a certain threshold, notify the user that there is an abnormality in the control voltage output process, and the user needs to go to the site to check and solve the problem.

[0064] In the first embodiment, when the engineering parameter is the supply air absolute humidity, the intelligent gateway calculation and processing module is further configured to calculate the supply air absolute humidity (ah) of the corresponding fan according to the inlet air temperature and humidity and the supply air temperature and humidity of at least one fan. Then, according to the inlet air temperature, supply air temperature, and supply air absolute humidity corresponding to the corresponding fan, use the air conditioner fresh air unit adjustment and control process to perform dynamic control of the unit working state of the fan.

[0065] In an embodiment of the unit working state dynamic control process, first, obtain the real-time time (such as Beijing standard time). When the target time (such as: 5:30 am) is reached, output adjustment information for setting the opening degree of all valves to 0 and an adjustment control instruction for controlling the start of the fan.

[0066] Then, output a fan start control signal, and judge the working state of the fan according to the working state signals of all monitoring components. As Figure 3 shown, during the fan startup process, the intelligent gateway calculation and processing module will sequentially judge whether it has received a manual-to-automatic conversion startup signal, a fan failure signal, and a fan frequency converter failure alarm signal according to the working state signals feedback by the fan in real time. Among them, in the case of receiving the manual-to-automatic conversion startup signal and not receiving the fan failure signal and the fan frequency converter failure alarm signal, it is determined that the current fan starts normally.

[0067] In the case of not receiving the manual-to-automatic conversion startup signal, or receiving the fan failure signal, or receiving the fan frequency converter failure alarm signal, it is determined that the current fan does not start normally. At this time, output a warning signal indicating that the fan at the specified position does not start normally to prompt the staff to perform on-site maintenance. Moreover, when the current fan does not start normally, the intelligent gateway calculation and processing module will output adjustment information for setting the opening degrees of the chilled water valve and the hot water valve to 0.

[0068] Finally, in the case of normal fan startup, perform multi-mode regulation of the fan according to the inlet air temperature, supply air temperature, and supply air absolute humidity.

[0069] In an embodiment, as Figure 4As shown, when the inlet air temperature reaches or exceeds the first temperature threshold, adjustment information for closing the hot water valve is output. And when the inlet air temperature reaches or exceeds the first temperature threshold (T1, for example: 13°C) and the absolute humidity of the supply air reaches the first humidity threshold (AH1), it enters the fan frequency control mode. In this fan frequency control mode, adjustment information for setting the opening degree of the chilled water valve to 100% is output. Then, when the time for maintaining the current temperature and humidity state (i.e., the state where the inlet air temperature reaches or exceeds the first temperature threshold and the absolute humidity of the supply air reaches the first humidity threshold) reaches the first time threshold (for example: 10 minutes), adjustment information for maintaining the operating frequency of the fan at the target frequency (for example: 35Hz) is output.

[0070] In one embodiment, as Figure 5 shown, when the inlet air temperature reaches or exceeds the first temperature threshold, adjustment information for closing the hot water valve is output. And when the inlet air temperature reaches or exceeds the first temperature threshold, the absolute humidity of the supply air does not reach the first humidity threshold, the absolute humidity of the supply air reaches or exceeds the second humidity threshold (AH3), and the time for maintaining the current temperature and humidity state (i.e., the state where the inlet air temperature reaches or exceeds the first temperature threshold, the absolute humidity of the supply air does not reach the first humidity threshold, and the absolute humidity of the supply air reaches or exceeds the second humidity threshold) reaches the second time threshold (for example: more than 30 seconds), it enters the first type of cooling and dehumidification control mode. In this first type of cooling and dehumidification control mode, adjustment information for adjusting the opening degree of the chilled water valve is output so that the adjusted absolute humidity of the supply air reaches the intermediate humidity threshold (AH2). Wherein, the first humidity threshold is greater than the second humidity threshold, the intermediate humidity threshold is less than the first humidity threshold, and the intermediate humidity threshold is greater than the second humidity threshold.

[0071] In one embodiment, as Figure 5 shown, when the inlet air temperature reaches or exceeds the first temperature threshold and the absolute humidity of the supply air does not reach the second humidity threshold, it enters the second type of cooling and dehumidification control mode. In this second type of cooling and dehumidification control mode, adjustment information for closing the chilled water valve is output.

[0072] In one embodiment, as Figure 6 shown, when the inlet air temperature does not reach the first temperature threshold and does not reach the second temperature threshold, it enters the first type of heating control mode. In this first type of heating control mode, adjustment information for closing the chilled water valve and adjusting the opening degree of the hot water valve is output so that the adjusted supply air temperature approaches the second temperature threshold (T2, for example: 22°C). Wherein, the second temperature threshold is higher than the first temperature threshold.

[0073] In one embodiment, as Figure 6As shown, when the incoming air temperature does not reach the first temperature threshold and reaches or exceeds the second temperature threshold, it enters the second type of heating regulation mode. This second type of heating regulation mode is to output regulation information for closing the hot water valve.

[0074] For example:

[0075] By transforming and upgrading the air-conditioning fan unit in the traditional Building A, high efficiency and energy conservation are achieved, and it is transformed into an intelligent and automatic fresh air system. Through the collection of temperature and humidity by sensors, using the PID function to calculate, the appropriate valve voltage value and its corresponding adjustment amount are obtained, and the valve opening is controlled, which can greatly save the energy consumption of the fan and the labor energy consumption.

[0076] The working process of the control system described in the embodiments of the present invention is as follows:

[0077] 1) Obtain the data of temperature and humidity, and calculate the absolute humidity value through the absolute humidity calculation function;

[0078] 2) Obtain the Beijing standard time. When the time reaches a certain time point, the data is reset, the valve opening is reset to 0, and the PID calculation in the intelligent gateway calculation processing module is turned off;

[0079] 3) Determine whether the fan status is normally turned on. When it is in the normal on state, the next operation is carried out. When it is not normally turned on (closed state), the opening of the cold / hot water valve is controlled to 0, and the PID calculation in the intelligent gateway calculation processing module is turned off;

[0080] 4) When the incoming air temperature is higher than T1 degrees Celsius, and the absolute humidity of the supply air ah > AH1 (AH1 > AH2 > AH3), and it lasts for more than 10 minutes, then control the opening of the cold water valve to reach 100%;

[0081] 5) When the incoming air temperature is higher than T1 degrees Celsius, and the absolute humidity of the supply air AH3 <= ah <= AH1, and it lasts for more than 30S, then the PID calculation will be carried out to control the cold water valve to make the absolute humidity ah approach AH2;

[0082] 6) When the incoming air temperature is higher than T1 degrees Celsius, and the absolute humidity of the supply air ah < AH3, and it lasts for more than 10 minutes, then control the cold water valve to close;

[0083] 7) When the incoming air temperature is lower than T1 degrees Celsius, and the supply air temperature T2 < 22°C, at this time, control the cold water valve to close, and control the hot water valve through the PID calculation to make the supply air temperature T2 approach 22°C.

[0084] In one embodiment, when the engineering parameter is the dew point temperature, the intelligent gateway calculation and processing module is further configured to calculate the dew point temperature at the corresponding air inlet position according to the temperature and humidity of the air inlet of at least one fan, and use the dew point temperature

[0085] In a second embodiment, when the engineering parameter is the dew point temperature, the intelligent gateway calculation and processing module is further configured to calculate the dew point temperature at the corresponding monitoring position according to the temperature and humidity at different indoor monitoring positions, determine the average dew point temperature, and then, according to the average dew point temperature and the supply air temperature of the fan, use the air-conditioning fresh air unit regulation and control process to perform dynamic control of the unit working state of the fan.

[0086] In one embodiment of the unit working state dynamic control process, first, obtain the real-time time (such as Beijing standard time), and when the target time (such as: 5:30 am) is reached, output adjustment information for setting the opening degree of all valves to 0 and an adjustment control instruction for controlling the start of the fan.

[0087] Then, output a fan start control signal, and judge the working state of the fan according to the working state signals of all monitoring components. As Figure 3 shown, during the fan startup process, the intelligent gateway calculation and processing module will sequentially judge whether it has received a manual-to-automatic conversion startup signal, a fan failure signal, and a fan frequency converter failure alarm signal according to the working state signal feedback by the fan in real time. Among them, in the case of receiving the manual-to-automatic conversion startup signal and not receiving the fan failure signal and the fan frequency converter failure alarm signal, it is determined that the current fan starts up normally.

[0088] In the case of not receiving the manual-to-automatic conversion startup signal, or receiving the fan failure signal, or receiving the fan frequency converter failure alarm signal, it is determined that the current fan does not start up normally. At this time, an alarm signal indicating that the fan at the specified position does not start up normally is output to prompt the staff to perform on-site maintenance. Moreover, when the current fan does not start up normally, the intelligent gateway calculation and processing module will output adjustment information for setting the opening degrees of the chilled water valve and the hot water valve to 0.

[0089] Finally, in the case of normal fan startup, the fan is regulated according to the average dew point temperature and the supply air temperature of the fan.

[0090] In one embodiment, as Figure 7As shown, when the incoming air temperature does not reach the dew point temperature threshold, adjustment information for adjusting the opening degree of the chilled water valve is output. Then, when the time for maintaining the current incoming air temperature state (i.e., the state where the incoming air temperature does not reach the dew point temperature threshold) reaches the first time threshold (for example: 10 minutes), adjustment information for adjusting the opening degree of the fresh air valve is output, so that the adjusted supply air temperature exceeds the dew point temperature threshold for a certain period of time and the room is not in a condensation state. That is to say, the adjusted effect makes the whole room not in a condensation state.

[0091] In an embodiment of the present invention, the dew point temperature threshold is the sum of the average dew point temperature and the allowable deviation (for example: 0.5°C).

[0092] In the third embodiment, when the engineering parameter is enthalpy value, the above intelligent gateway calculation and processing module is also used for the incoming air temperature and supply air temperature of the fan, calculates the mixed air temperature and supply air enthalpy value, and then, according to the mixed air temperature and supply air enthalpy value, uses the air conditioner fresh air unit adjustment and control process to perform dynamic control of the unit working state of the fan.

[0093] In an embodiment of the unit working state dynamic control process, first, the real-time time (such as Beijing standard time) is obtained, and when the target time (for example: 5:30 am) is reached, adjustment information for setting the opening degrees of all valves to 0 and an adjustment control instruction for controlling the start of the fan are output.

[0094] Then, a fan start control signal is output, and the working state of the fan is judged according to the working state signals of all monitoring components. As Figure 3 shown, during the fan start-up process, the intelligent gateway calculation and processing module will sequentially judge whether it has received a manual-to-automatic conversion start signal, a fan failure signal, and a fan frequency converter failure alarm signal according to the working state signal feedback by the fan in real time. Among them, in the case of receiving the manual-to-automatic conversion start signal and not receiving the fan failure signal and the fan frequency converter failure alarm signal, it is determined that the current fan starts normally.

[0095] In the case of not receiving the manual-to-automatic conversion start signal, or receiving the fan failure signal, or receiving the fan frequency converter failure alarm signal, it is determined that the current fan does not start normally. At this time, a warning signal indicating that the fan at the specified position does not start normally is output to prompt the staff to perform on-site maintenance. Moreover, when the current fan does not start normally, the intelligent gateway calculation and processing module will output adjustment information for setting the opening degrees of the chilled water valve and the hot water valve to 0.

[0096] Finally, in the case of normal fan start, multi-mode regulation of the fan is performed according to the mixed air temperature and supply air enthalpy value.

[0097] In one embodiment, as Figure 8 shown, when the mixed air temperature reaches or exceeds the first temperature threshold, adjustment information for closing the hot water valve is output, and when the mixed air temperature reaches or exceeds the first temperature threshold and the supply air enthalpy value reaches the first enthalpy value threshold, the fan frequency control mode is entered. In this fan frequency control mode, adjustment information for setting the opening degree of the chilled water valve to 100% is output. Then, when the time for maintaining the current mixed air temperature and supply air enthalpy value state (i.e., maintaining the state where the mixed air temperature reaches or exceeds the first temperature threshold and the supply air enthalpy value reaches the first enthalpy value threshold) reaches the first time threshold, adjustment information for maintaining the fan operating frequency at the target frequency (e.g., 35 Hz) is output.

[0098] In one embodiment, as Figure 9 shown, when the mixed air temperature reaches or exceeds the first temperature threshold, adjustment information for closing the hot water valve is output, and when the mixed air temperature reaches or exceeds the first temperature threshold, the supply air enthalpy value does not reach the first enthalpy value threshold, the supply air enthalpy value reaches the second enthalpy value threshold, and the time for maintaining the current mixed air temperature and supply air enthalpy value state (i.e., maintaining the state where the mixed air temperature reaches or exceeds the first temperature threshold, the supply air enthalpy value does not reach the first enthalpy value threshold, and the supply air enthalpy value reaches the second enthalpy value threshold) reaches the second time threshold, the first type of cooling and dehumidification control mode is entered. In this first type of cooling and dehumidification control mode, adjustment information for adjusting the opening degree of the chilled water valve is output so that the adjusted supply air enthalpy value reaches the intermediate enthalpy value threshold.

[0099] It should be noted that the first enthalpy value threshold and the second enthalpy value threshold are the enthalpy value thresholds that need to be reached in the summer mode. Among them, the first enthalpy value threshold is greater than the second enthalpy value threshold, the intermediate enthalpy value threshold is less than the first enthalpy value threshold, and moreover, the intermediate enthalpy value threshold is greater than the enthalpy value threshold.

[0100] In one embodiment, as Figure 9 shown, when the mixed air temperature reaches or exceeds the first temperature threshold and the supply air enthalpy value does not reach the second enthalpy value threshold, the second type of cooling and dehumidification control mode is entered. In this second type of cooling and dehumidification control mode, adjustment information for closing the chilled water valve is output.

[0101] In one embodiment, as Figure 10 shown, when the mixed air temperature does not reach the first temperature threshold and the supply air enthalpy value reaches or exceeds the third enthalpy value threshold, the first type of heating control mode is entered. In this first type of heating control mode, adjustment information for closing the hot water valve is output.

[0102] In one embodiment, as Figure 10As shown, when the mixed air temperature does not reach the first temperature threshold and the supply air enthalpy value does not reach the third enthalpy value threshold, the second type of heating control mode is entered. The second type of heating control mode is to close the chilled water valve and adjust the opening degree of the hot water valve so that the adjusted supply air enthalpy value approaches the third enthalpy value threshold. It should be noted that the third enthalpy value threshold refers to the enthalpy value threshold required in the winter mode.

[0103] The present invention discloses a control system for a combined air conditioning unit and a fresh air handling unit. The control system includes a data acquisition module, an Internet of Things intelligent gateway computing and processing module, an output control module, a signal feedback module, and a cloud processing module. Among them, the data collected by the acquisition module is transmitted to the Internet of Things intelligent gateway computing and processing module, and then transmitted to the cloud processing module for cloud data viewing and real-time calculation and analysis. Using built-in multiple functions and process controls, the results obtained from the calculation and processing are sent to the output control for specific devices, and the specific devices transmit the operating status to the signal feedback module to check the real results. By judging and analyzing the working state data and environmental data fed back by the monitoring components, the present invention formulates different processing procedures, and thus issues different monitoring components and different types of output signals, which can save more energy and resources, make the on-site specific environment and on-site equipment highly matched and adapted, complete the actions required by the equipment with the least resources, without consuming redundant resources, make full use of resources, optimize the resource usage scenario, and save unnecessary resources.

[0104] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those familiar with the technology within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

[0105] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0106] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0107] It should be understood that the embodiments disclosed in the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should extend to equivalent alternatives of these features understood by those of ordinary skill in the relevant art. It should also be understood that the terms used herein are only for the purpose of describing specific embodiments and do not imply limitation.

[0108] The phrase "an embodiment" or "embodiments" mentioned in the specification means that the specific features, structures or characteristics described in connection with the embodiments are included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment" or "embodiments" that appear throughout the specification do not necessarily all refer to the same embodiment.

[0109] Although the embodiments disclosed in the present invention are as above, the content described is only an embodiment adopted for the convenience of understanding the present invention and is not intended to limit the present invention. Any person skilled in the art within the technical field to which the present invention pertains may make any modifications and changes in the form of implementation and details without departing from the spirit and scope disclosed by the present invention. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. A control system for a combined air conditioning unit and a fresh air handling unit, characterized in that: include: A data collection module, which is used to collect environmental information at different monitoring locations; The intelligent gateway computing and processing module is used to calculate the engineering parameters according to the environmental information and the working status signal of the monitoring component, and then determine the adjustment information of the specified monitoring component at the specified location according to the engineering parameters by using the control process under different scenarios, wherein the adjustment information includes at least one monitoring parameter of the monitoring component and the adjustment amount or control instruction corresponding to each monitoring parameter; An output control module, which is used to transmit a corresponding control signal to a designated monitoring component according to the adjustment information; The signal feedback module is used to collect working status signals of at least one monitoring parameter of monitoring components at different positions in the working area.

2. The control system according to claim 1, characterized in that: The control system further comprises: A cloud processing module communicates with the intelligent gateway computing and processing module, and is used to perform a rationality diagnosis on the impact of the current adjustment operation on the comfort state of the entire work area based on the adjustment information, and send the adjustment information that has passed the rationality diagnosis to the output control module, wherein the comfort state of the work area at least includes the matching between the adjustment amount and the adjustment capacity of the regulated component, the impact of the temperature, humidity and noise at the monitoring location on the surrounding personnel, and the real-time change trend and deviation of various operating parameters of the monitoring components.

3. The control system according to claim 2, characterized in that: The cloud processing module is also used to issue an abnormal point alarm for the adjustment information that fails the rationality diagnosis.

4. The control system according to claim 2 or 3, characterized in that: The cloud processing module is also used to map the monitoring position points, monitoring parameters and adjustment amounts in the current adjustment information to a pre-built coupled simulation model of the work area unit operation, simulate the predicted values ​​of the monitoring parameters of each monitoring position point in the current work area caused by the current adjustment operation, and couple all the predicted values ​​to determine whether there is a phenomenon in which the comfort state of at least one position point in the entire work area exceeds the corresponding threshold value. If so, the current abnormal position point is located, wherein the coupled simulation model of the work area unit operation can predict whether the currently regulated component can complete the adjustment of the current adjustment amount, the influence relationship between any two position points, the degree of influence of the real-time state of a single position point on surrounding personnel, the real-time change trend of each operating parameter of each monitoring component, and the deviation trend of the real-time change amount from the corresponding threshold value according to the real-time temperature, real-time humidity and real-time operating noise of different monitoring position points in the work area space.

5. The control system according to any one of claims 2 to 4, characterized in that: The cloud processing module and the intelligent gateway computing processing module are connected to the network via the MQTT protocol.

6. The control system according to any one of claims 2 to 5, characterized in that: The monitoring components include a chilled water valve, a hot water valve, a humidifier, a heater, and a fan; The engineering parameters include absolute humidity, dew point temperature and enthalpy value of the supply air.

7. The control system according to claim 6, characterized in that: When the engineering parameter is the absolute humidity of the supply air, the intelligent gateway calculation processing module is further used to calculate the absolute humidity of the supply air according to the inlet air temperature and humidity and the supply air temperature and humidity of the fan, and dynamically control the working state of the unit by adjusting the control process of the air conditioning fresh air unit according to the inlet air and supply air temperature and the absolute humidity of the supply air, including: Get the real time, and when the target time is reached, output the adjustment information for setting the opening of all valves to 0 and the fan start control signal; Output the fan start control signal, and judge the working state of the fan according to the working state signals of all monitoring components, wherein, when the fan is not started, output the adjustment information for setting the opening of the chilled water valve and the hot water valve to 0; When the fan is started normally, the fan is controlled in multiple modes according to the inlet and supply air temperatures and the absolute humidity of the supply air, including: When the inlet air temperature reaches or exceeds the first temperature threshold, the adjustment information for closing the hot water valve is output, and when the inlet air temperature reaches or exceeds the first temperature threshold and the absolute humidity of the supply air reaches the first humidity threshold, the fan frequency control mode is entered, and the fan frequency control mode is to output the adjustment information for setting the opening of the chilled water valve to 100%, and then when the time for maintaining the current temperature and humidity state reaches the first time threshold, the adjustment information for maintaining the fan operating frequency at the target frequency is output; When the inlet air temperature reaches or exceeds the first temperature threshold, the regulating information for closing the hot water valve is output, and when the inlet air temperature reaches or exceeds the first temperature threshold, and the absolute humidity of the supply air does not reach the first humidity threshold, and the absolute humidity of the supply air reaches or exceeds the second humidity threshold, and the time for maintaining the current temperature and humidity state reaches the second time threshold, the first type of cooling and dehumidification control mode is entered, and the first type of cooling and dehumidification control mode is to output the regulating information for adjusting the opening of the chilled water valve so that the adjusted absolute humidity of the supply air reaches the intermediate humidity threshold, the first humidity threshold is greater than the second humidity threshold, and the intermediate humidity threshold is less than the first humidity threshold and greater than the second humidity threshold; When the inlet air temperature reaches or exceeds the first temperature threshold and the supply air absolute humidity does not reach the second humidity threshold, the second type of cooling and dehumidification control mode is entered, and the second type of cooling and dehumidification control mode is to output the adjustment information for closing the chilled water valve; When the inlet air temperature does not reach the first temperature threshold and the inlet air temperature does not reach the second temperature threshold, the first type of heating control mode is entered, and the first type of heating control mode is to output the adjustment information for closing the chilled water valve and adjusting the opening of the hot water valve so that the adjusted supply air temperature approaches the second temperature threshold, and the second temperature threshold is higher than the first temperature threshold; When the inlet air temperature does not reach the first temperature threshold and the inlet air temperature reaches or exceeds the second temperature threshold, the second type of heating control mode is entered, and the second type of heating control mode is to output the adjustment information for closing the hot water valve.

8. The control system according to claim 6 or 7, characterized in that: When the engineering parameter is the dew point temperature, the intelligent gateway calculation processing module is further used to calculate the dew point temperature of the corresponding monitoring position and determine the average dew point temperature according to the temperature and humidity of different indoor monitoring positions, and then, according to the average dew point temperature and the air supply temperature of the fan, the air conditioning fresh air unit adjustment control process is used to dynamically control the working state of the unit, including: Get the real time, and when the target time is reached, output the adjustment information for setting the opening of all valves to 0 and the fan start control signal; Output the fan start control signal, and judge the working state of the fan according to the working state signals of all monitoring components, wherein, when the fan is not started, output the adjustment information for setting the opening of the chilled water valve and the hot water valve to 0; When the fan is started normally, the fan is regulated according to the average dew point temperature and the air supply temperature of the fan, including: When the inlet air temperature does not reach the dew point temperature threshold, the adjustment information for adjusting the opening of the cold water valve is output, and then when the time for maintaining the current inlet air temperature state reaches the first time threshold, the adjustment information for adjusting the opening of the fresh air valve is output, so that the adjusted supply air temperature exceeds the dew point temperature threshold for a certain period of time and the indoor room is not in a condensation state.

9. The control system according to any one of claims 6 to 8, characterized in that: When the engineering parameter is enthalpy, The intelligent gateway calculation processing module is also used to calculate the mixed air temperature and the supply air enthalpy value according to the inlet air temperature and the supply air temperature of the fan, and dynamically control the working state of the unit by adjusting the control process of the air conditioning fresh air unit according to the mixed air temperature and the supply air enthalpy value, including: Get the real time, and when the target time is reached, output the adjustment information for setting the opening of all valves to 0 and the fan start control signal; Output the fan start control signal, and judge the working state of the fan according to the working state signals of all monitoring components, wherein, when the fan is not started, output the adjustment information for setting the opening of the chilled water valve and the hot water valve to 0; When the fan is started normally, the mixed air temperature and the air supply enthalpy value are used to control the fan in multiple modes, including: When the mixed air temperature reaches or exceeds the first temperature threshold, the regulating information for closing the hot water valve is output, and when the mixed air temperature reaches or exceeds the first temperature threshold and the air supply enthalpy reaches the first enthalpy threshold, the fan frequency control mode is entered, and the fan frequency control mode is to output the regulating information for setting the opening of the chilled water valve to 100%, and then when the time for maintaining the current mixed air temperature and air supply enthalpy state reaches the first time threshold, the regulating information for maintaining the fan operating frequency at the target frequency is output; When the mixed air temperature reaches or exceeds the first temperature threshold, the regulating information for closing the hot water valve is output, and when the mixed air temperature reaches or exceeds the first temperature threshold, and the supply air enthalpy value does not reach the first enthalpy value threshold, and the supply air enthalpy value reaches the second enthalpy value threshold, and the time for maintaining the current mixed air temperature and supply air enthalpy value state reaches the second time threshold, the first type of cooling and dehumidification control mode is entered, and the first type of cooling and dehumidification control mode is to output the regulating information for adjusting the opening of the chilled water valve so that the adjusted supply air enthalpy value reaches the intermediate enthalpy value threshold, the first enthalpy value threshold is greater than the second enthalpy value threshold, and the intermediate enthalpy value threshold is less than the first enthalpy value threshold and greater than the second enthalpy value threshold; When the mixed air temperature reaches or exceeds the first temperature threshold and the air supply enthalpy value does not reach the second enthalpy value threshold, the second type of cooling and dehumidification control mode is entered, and the second type of cooling and dehumidification control mode is to output the adjustment information for closing the chilled water valve; When the mixed air temperature does not reach the first temperature threshold and the air supply enthalpy reaches or exceeds the third enthalpy threshold, the first type of heating control mode is entered, and the first type of heating control mode is to output the adjustment information for closing the hot water valve; When the mixed air temperature does not reach the first temperature threshold and the supply air enthalpy value does not reach the third enthalpy value threshold, the second type of heating control mode is used. The second type of heating control mode outputs control information for closing the cold water valve and adjusting the opening of the hot water valve so that the adjusted supply air enthalpy value approaches the third enthalpy value threshold.

10. The control system according to any one of claims 1 to 9, characterized in that: The output control module is also used to output a control signal that meets the component type control interface conditions according to the type of the currently regulated and monitored component, and the output mode of the control signal is selected from one of an analog signal, a digital signal and an RS485 communication signal.

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