Energy-saving automatic control system of central air conditioner

Abstract

The invention discloses a central air conditioner energy-saving automatic control system which comprises a monitoring module used for monitoring an air outlet of a central air conditioner in real time, obtaining air outlet deviation data, judging whether the central air conditioner is in an air outlet high deviation state or not according to the air outlet deviation data and sending judgment information to a control module analysis module; the control module is used for receiving the judgment information and adaptively adjusting the central air conditioner according to the judgment information; the analysis module is used for setting a monitoring period, analyzing the automatic adjusting performance of the central air conditioner in the monitoring period, generating an automatic control abnormal signal and an automatic control normal signal and then sending the abnormal signal and the normal signal to the user terminal, and the user terminal sends corresponding early warning information when receiving the abnormal signal. The method is used for solving the technical problems that an existing central air conditioner is difficult to reasonably analyze the air outlet deviation condition and automatically conduct adaptive adjustment, and the air outlet management and control performance cannot be accurately evaluated.

Description

Technical Field

[0001] This application relates to the technical field of air conditioner energy conservation, and particularly to a central air conditioner energy conservation and automatic control system. Background Art

[0002] Central air conditioners have always been essential facilities in buildings or public places. Whether it is a large shopping mall, a subway station or an office building, central air conditioners are needed to control the comfortable environmental temperature and humidity of the human body. The setting of central air conditioners has become indispensable, but central air conditioners are also often important energy-consuming facilities, and their power consumption often accounts for a considerable proportion in the whole building or public place.

[0003] At present, central air conditioners often operate according to the requirements set by users when operating, making it difficult to reasonably analyze the air outlet deviation situation and automatically perform adaptive adjustment, and unable to accurately evaluate the air outlet control performance, resulting in high power consumption of central air conditioners, and further leading to a decline in the energy conservation effect of central air conditioners and a reduction in the automatic control level. Summary of the Invention

[0004] The embodiments of this application provide a central air conditioner energy conservation and automatic control system to solve the technical problems that existing central air conditioners are difficult to reasonably analyze the air outlet deviation situation and automatically perform adaptive adjustment, and are unable to accurately evaluate the air outlet control performance, resulting in high power consumption of central air conditioners, and further leading to a decline in the energy conservation effect of central air conditioners and a reduction in the automatic control level.

[0005] In view of this, this application provides a central air conditioner energy conservation and automatic control system, including a monitoring module, an analysis module, a control module and a user terminal;

[0006] The monitoring module is used to monitor the air outlet of the central air conditioner in real time, obtain the air outlet deviation data, judge whether it is in the high air outlet deviation state according to the air outlet deviation data, and send the judgment information to the control module and the analysis module;

[0007] The control module is used to receive the judgment information and perform adaptive adjustment on the central air conditioner according to the judgment information;

[0008] The analysis module is used to set a monitoring period, analyze the automatic adjustment performance of the central air conditioner within the monitoring period, generate an automatic control abnormal signal and an automatic control normal signal, and then send the abnormal signal and the normal signal to the user terminal. When the user terminal receives the abnormal signal, it issues a corresponding warning message.

[0009] Optionally, the specific process of judging the air outlet deviation data includes:

[0010] Collect the real-time temperature, real-time humidity, and real-time wind speed of the gas output from the air outlet, and obtain the air temperature evaluation value, air humidity evaluation value, and air speed evaluation value based on the real-time temperature, real-time humidity, and real-time wind speed of the output gas;

[0011] Then perform numerical calculations on the air temperature evaluation value, air humidity evaluation value, and air speed evaluation value to obtain the air outlet deviation table value. If the air outlet deviation table value exceeds the preset air outlet deviation table threshold, it is determined that the central air conditioner is in the high air outlet deviation state.

[0012] Optionally, the specific analysis process of the analysis module includes:

[0013] Start timing when it is determined that the central air conditioner is in the high air outlet deviation state until the central air conditioner gets rid of the high air outlet deviation state, and obtain the automatic control duration;

[0014] Then sum up all the automatic control durations within the monitoring period to obtain the total real-time value of the high air outlet deviation, and calculate the ratio of the total real-time value of the high air outlet deviation to the total air outlet duration of the central air conditioner within the monitoring period to obtain the air outlet control abnormal value. If the air outlet control abnormal value exceeds the preset air outlet control abnormal threshold, an automatic control abnormal signal is generated;

[0015] If the air outlet control abnormal value does not exceed the preset air outlet control abnormal threshold, perform numerical calculations on the air outlet control abnormal value, the air outlet control inferior value, and the air outlet control inspection value to obtain the air outlet control warning coefficient. If the air outlet control warning coefficient exceeds the preset air outlet control warning coefficient threshold, an automatic control abnormal signal is generated; if the air outlet control warning coefficient does not exceed the preset air outlet control warning coefficient threshold, an automatic control normal signal is generated.

[0016] Optionally, the control module is communicatively connected to the area monitoring and capturing module. The area monitoring and capturing module marks the indoor space where the central air conditioner is located as the capturing area and conducts real-time monitoring of the capturing area through a monitoring camera. When the duration of no one in the area exceeds the preset duration threshold of no one in the area, the control module generates an area efficiency reduction signal and sends the area efficiency reduction signal to the user terminal; if the user terminal does not give a feedback instruction within the first specified duration, the control module controls the central air conditioner to reduce the operating efficiency; if the user terminal does not give a feedback instruction within the second specified duration, the control module controls the central air conditioner to suspend operation.

[0017] Optionally, it further includes a collection module, a preprocessing module, a calculation model, and an automatic adjustment module;

[0018] The collection module is used to collect environmental data, the operating state data of the component devices of the central air conditioner, and the system setting parameter data of the central air conditioner, summarize them into collection data, and send the collection data to the preprocessing module;

[0019] The preprocessing module is used to receive the collected data and perform smoothing and normalization processing in sequence;

[0020] The calculation model is used to calculate the pre-processed environmental data and the operating status data of the central air-conditioning component equipment, and output the predicted setting parameter data of the central air-conditioning system, and learn the pre-processed collected data to update the parameters of the enhanced model;

[0021] The automatic adjustment module is used to automatically adjust the setting parameters of the central air conditioning system according to the predicted setting parameter data output by the calculation model;

[0022] The user terminal is used to provide users with a visual interface and an operable interface, so that users can monitor the operating status of the air-conditioning system and start or stop the central air-conditioning according to the user's wishes.

[0023] Optionally, the acquisition module includes an environmental data acquisition module, a central air-conditioning component equipment operation status data acquisition module, and a central air-conditioning system setting parameter data acquisition module;

[0024] The environmental data acquisition module is used to obtain the outlet water temperature and inlet water temperature of cooling water, the outlet water temperature and inlet water temperature of chilled water in real time, and summarize them into environmental data;

[0025] The central air-conditioning equipment operation status data acquisition module is used to obtain the chilled water pump power, cooling water pump power and host power in real time, and summarize them into the central air-conditioning equipment operation status data;

[0026] The central air-conditioning system setting parameter data acquisition module is used to obtain the chilled water pump frequency, cooling water pump frequency and host operation group number in real time, and summarize them into the air-conditioning system setting parameter data.

[0027] Optionally, the user terminal includes:

[0028] The manual monitoring module is used to provide users with a visual interface to present in real time the cooling water outlet temperature and inlet temperature, the chilled water outlet temperature and inlet temperature, the chilled water pump power, the cooling water pump power, the host power, the chilled water pump frequency, the cooling water pump frequency and the number of host operation groups;

[0029] The manual shutdown module is used to provide an operation interface for users and directly receive the start or shutdown information input by the user. The air conditioning automatic control module realizes the start or shutdown control of the hardware equipment through the OPC protocol according to the start or shutdown information.

[0030] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0031] The energy-saving automatic control system of a central air conditioner provided by the present application, compared with the prior art, monitors the air outlet of the central air conditioner in real time through the monitoring module, obtains the air outlet deviation data, and then judges whether the air outlet is in a high deviation state according to the air outlet deviation data, and sends the judgment information to the control module analysis module; the control module receives the judgment information, and adaptively adjusts the central air conditioner according to the judgment information, and then sets a monitoring period through the analysis module, and analyzes the automatic adjustment performance of the central air conditioner within the monitoring period, generates an automatic control abnormal signal and an automatic control normal signal, and then sends the abnormal signal and the normal signal to the user terminal, and the user terminal sends a corresponding warning information when receiving the abnormal signal, so as to facilitate the user to investigate and analyze the cause of the abnormality and make corresponding improvement measures, thereby improving the energy-saving effect and automatic control level of the central air conditioner;

[0032] The acquisition module also acquires environmental data, operating status data of central air-conditioning components and setting parameter data of the central air-conditioning system, and summarizes the acquired data into acquired data, and sends the acquired data to the preprocessing module; the preprocessing module receives the acquired data, and performs smoothing and normalization processing in turn; the preprocessed environmental data and operating status data of central air-conditioning components are then calculated by the calculation model, and the predicted setting parameter data of the central air-conditioning system is output, and the preprocessed acquired data is learned to update the parameters of the enhanced model; the automatic adjustment module automatically adjusts the setting parameters of the central air-conditioning system according to the predicted setting parameter data output by the calculation model; the user terminal provides the user with a visual interface and an operable interface, so that the user can monitor the operating status of the air-conditioning system and turn on or off the central air-conditioning according to the user's wishes; the operating status of the central air-conditioning can be adjusted in real time according to the application scenario, providing the user with a comfortable air-conditioning environment while saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly express the technical solutions of the embodiments of the present application, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a system block diagram of a central air-conditioning energy-saving automatic control system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0036] For ease of understanding, please refer to Figure 1 an embodiment of a central air-conditioning energy-saving automatic control system provided by this application, which includes a monitoring module, an analysis module, a control module, and a user terminal; the monitoring module is used to monitor the air outlet of the central air-conditioning in real time, obtain air outlet deviation data, and then judge whether it is in a high air outlet deviation state according to the air outlet deviation data, and send the judgment information to the control module and the analysis module; the control module is used to receive the judgment information and perform adaptive adjustment on the central air-conditioning according to the judgment information; the analysis module is used to set a monitoring period, analyze the automatic adjustment performance of the central air-conditioning within the monitoring period, generate an automatic control abnormal signal and an automatic control normal signal, and then send the abnormal signal and the normal signal to the user terminal. When the user terminal receives the abnormal signal, it issues a corresponding warning message, which is convenient for the user to investigate and analyze the cause of the abnormality and take corresponding improvement measures, so as to improve the energy-saving effect and automatic control level of the central air-conditioning.

[0037] Specifically, the monitoring module monitors the air outlet of the central air-conditioning in real time through corresponding sensors arranged at the air outlet of the central air-conditioning, obtains air outlet deviation data to judge whether it is in a high air outlet deviation state, and sends the judgment information to the control module and the analysis module through the network. When the control module receives the judgment information of the high air outlet deviation state, it performs adaptive adjustment on the central air-conditioning;

[0038] The specific process of judging the air outlet deviation data includes:

[0039] Collect the real-time temperature, real-time humidity, and real-time wind speed of the gas output from the air outlet, and obtain an air outlet temperature evaluation value, an air outlet humidity evaluation value, and an air outlet wind speed evaluation value according to the real-time temperature, real-time humidity, and real-time wind speed of the output gas; specifically, calculate the difference between the real-time temperature and the currently set standard temperature and take the absolute value to obtain the air outlet temperature evaluation value, calculate the difference between the real-time humidity and the currently set standard humidity and take the absolute value to obtain the air outlet humidity evaluation value, and calculate the difference between the real-time wind speed and the currently set standard wind speed and take the absolute value to obtain the air outlet wind speed evaluation value; then perform numerical calculation on the air outlet temperature evaluation value, air outlet humidity evaluation value, and air outlet wind speed evaluation value to obtain an air outlet deviation table value. If the air outlet deviation table value exceeds the preset air outlet deviation table threshold, it is judged that the central air-conditioning is in a high air outlet deviation state.

[0040] Specifically, through the formula perform numerical calculation on the air outlet temperature evaluation value Q, the air outlet humidity evaluation value E, and the air outlet wind speed evaluation value G to obtain the air outlet deviation table value Lth; where uk1, uk2, and uk3 are preset proportionality coefficients greater than zero, and the larger the numerical value of the air outlet deviation table value Lth, the greater the deviation degree of the gas output from the air outlet at the corresponding moment compared with the set standard.

[0041] Next, compare the air outlet deviation table value Lth with the preset air outlet deviation table threshold value. If the air outlet deviation table value Lth exceeds the preset air outlet deviation table threshold value, it indicates that the deviation degree of the gas output from the air outlet at the corresponding moment compared to the set standard is relatively large, and timely adjustment is required to ensure the air conditioning effect and avoid unnecessary energy waste. Then, it is determined that the central air conditioner is in the high air outlet deviation state.

[0042] Furthermore, the specific analysis process of the analysis module includes:

[0043] Start timing when it is determined that the central air conditioner is in the high air outlet deviation state until the central air conditioner gets rid of the high air outlet deviation state, and obtain the automatic control duration. Then, sum up all the automatic control durations within the monitoring period to obtain the total air outlet high deviation value, and calculate the ratio of the total air outlet high deviation value to the total air outlet duration of the central air conditioner within the monitoring period to obtain the air outlet control abnormal value. If the air outlet control abnormal value exceeds the preset air outlet control abnormal threshold value, an automatic control abnormal signal is generated; if the air outlet control abnormal value does not exceed the preset air outlet control abnormal threshold value, then perform numerical calculations on the air outlet control abnormal value, the air outlet control inferior value, and the air outlet control inspection value to obtain the air outlet management and control warning coefficient. If the air outlet management and control warning coefficient exceeds the preset air outlet management and control warning coefficient threshold value, an automatic control abnormal signal is generated; if the air outlet management and control warning coefficient does not exceed the preset air outlet management and control warning coefficient threshold value, an automatic control normal signal is generated.

[0044] Specifically, compare the air outlet control abnormal value with the preset air outlet control abnormal threshold value. If the air outlet control abnormal value exceeds the preset air outlet control abnormal threshold value, it indicates that the automatic control efficiency of the central air conditioner is relatively poor, and an automatic control abnormal signal is generated; if the air outlet control abnormal value does not exceed the preset air outlet control abnormal threshold value, when it is determined that the central air conditioner is in the high air outlet deviation state, mark the exceeded value of the air outlet deviation table value compared to the preset air outlet deviation table threshold value as the air outlet deviation excess value, and mark the ratio of the air outlet deviation excess value to the corresponding automatic control duration as the air outlet control analysis value; among them, the smaller the value of the air outlet control analysis value, the slower the adjustment efficiency for the corresponding high air outlet deviation state. Compare the air outlet control analysis value with the preset air outlet control analysis threshold value, and calculate the ratio of the number of air outlet control analysis values that do not exceed the preset air outlet control analysis threshold value within the monitoring period to the total air outlet duration of the central air conditioner within the monitoring period to obtain the air outlet control inferior value, and calculate the average value of all the air outlet control analysis values within the monitoring period to obtain the air outlet control inspection value;

[0045] Then, through the formula The air outlet control abnormal condition value TN, the air outlet control poor value TM and the air outlet control check value TP are numerically calculated to obtain the air outlet control warning coefficient TX; wherein, sq1, sq2, and sq3 are preset proportional coefficients whose values ​​are greater than zero, and the larger the value of the air outlet control warning coefficient TX, the worse the automatic control performance of the central air conditioner during the monitoring period is on the whole; the air outlet control warning coefficient TX is numerically compared with the preset air outlet control warning coefficient threshold value, if the air outlet control warning coefficient TX exceeds the preset air outlet control warning coefficient threshold value, indicating that the automatic control performance of the central air conditioner during the monitoring period is poor on the whole, then an automatic control abnormal signal is generated; if the air outlet control warning coefficient TX does not exceed the preset air outlet control warning coefficient threshold value, indicating that the automatic control performance of the central air conditioner during the monitoring period is good on the whole, then an automatic control qualified signal is generated.

[0046] Furthermore, the control module is communicatively connected to the area monitoring and capturing module, and the area monitoring and capturing module marks the indoor space where the central air conditioner is located as a capturing area, and monitors the capturing area in real time through a monitoring camera. When the unmanned time in the area exceeds a preset unmanned time threshold, the control module generates an area efficiency reduction signal, and sends the area efficiency reduction signal to the user terminal; if the user terminal does not make a feedback instruction within the first specified time, the control module controls the central air conditioner to reduce the operating efficiency; if the user terminal does not make a feedback instruction within the second specified time, the control module controls the central air conditioner to suspend operation.

[0047] Furthermore, it also includes an acquisition module, a pre-processing module, a calculation model and an automatic adjustment module;

[0048] The acquisition module is used to collect environmental data, operating status data of central air-conditioning components and setting parameter data of the central air-conditioning system, and summarize them into collected data, and send the collected data to the preprocessing module; the preprocessing module is used to receive the collected data and perform smoothing and normalization processing in sequence; the calculation model is used to calculate the preprocessed environmental data and the operating status data of the central air-conditioning components, and output the predicted setting parameter data of the central air-conditioning system, and learn the preprocessed collected data to update the parameters of the enhanced model; the automatic adjustment module is used to automatically adjust the setting parameters of the central air-conditioning system according to the predicted setting parameter data output by the calculation model; the user terminal is used to provide users with a visual interface and an operable interface, so that users can monitor the operating status of the air-conditioning system and turn on or off the central air-conditioning according to the user's wishes, so as to achieve the ability to adjust the operating status of the central air-conditioning in real time according to the application scenario, provide users with a comfortable air-conditioning environment, and save energy.

[0049] Further, the acquisition module includes an environmental data acquisition module, an operating status data acquisition module for the component devices of the central air conditioner, and a set parameter data acquisition module for the central air conditioner system. The environmental data acquisition module, the operating status data acquisition module for the component devices of the central air conditioner, and the set parameter data acquisition module for the central air conditioner system all communicate with the hardware devices in the air conditioner system through the Python language and the OPC protocol to achieve data acquisition, and save the acquired data to the SQLite database; the environmental data acquisition module is used to obtain the outlet temperature and inlet temperature of the cooling water, and the outlet temperature and inlet temperature of the chilled water in real time, and summarize them into environmental data; the operating status data acquisition module for the component devices of the central air conditioner is used to obtain the chilled water pump power, the cooling water pump power, and the host power in real time, and summarize them into the operating status data of the component devices of the central air conditioner; the set parameter data acquisition module for the central air conditioner system is used to obtain the chilled water pump frequency, the cooling water pump frequency, and the number of operating groups of the host in real time, and summarize them into the set parameter data of the air conditioner system.

[0050] Further, the user terminal includes: a manual monitoring module, which is used to provide a visual interface for the user to present the outlet temperature and inlet temperature of the cooling water, the outlet temperature and inlet temperature of the chilled water, the chilled water pump power, the cooling water pump power, the host power, the chilled water pump frequency, the cooling water pump frequency, and the number of operating groups of the host in real time; a manual shutdown module, which is used to provide an operation interface for the user to directly receive the start or stop information input by the user, and the air conditioner automatic control module realizes the start or stop control of the hardware device through the OPC protocol according to the start or stop information, so that the maintenance personnel can urgently shut down the automatic control system when they feel that the system is operating abnormally, and quickly make manual adjustments or use the safety settings.

[0051] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0052] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A central air-conditioning energy-saving automatic control system, characterized in that, It includes a monitoring module, an analysis module, a control module and a user terminal; The monitoring module is used to monitor the air output of the central air conditioner in real time, obtain the air outlet deviation data, judge whether it is in the high air outlet deviation state according to the air outlet deviation data, and send the judgment information to the control module and the analysis module; The control module is used to receive the judgment information and perform adaptive adjustment on the central air conditioner according to the judgment information; The analysis module is used to set the monitoring period, analyze the automatic adjustment performance of the central air conditioner within the monitoring period, generate an automatic control abnormal signal and an automatic control normal signal, and then send the abnormal signal and the normal signal to the user terminal. When the user terminal receives the abnormal signal, it issues a corresponding warning message.

2. The energy-saving automatic control system for central air conditioners according to claim 1, wherein, The specific process of judging the air outlet deviation data includes: Collect the real-time temperature, real-time humidity and real-time wind speed of the gas output from the air outlet, and obtain the air outlet temperature evaluation value, air outlet humidity evaluation value and air outlet wind speed evaluation value according to the real-time temperature, real-time humidity and real-time wind speed of the output gas; Then perform numerical calculation on the air outlet temperature evaluation value, air outlet humidity evaluation value and air outlet wind speed evaluation value to obtain the air outlet deviation table value. If the air outlet deviation table value exceeds the preset air outlet deviation table threshold, it is judged that the central air conditioner is in the high air outlet deviation state.

3. The energy-saving automatic control system for central air conditioner according to claim 1, characterized in that, The specific analysis process of the analysis module includes: Start timing when it is judged that the central air conditioner is in the high air outlet deviation state until the central air conditioner gets rid of the high air outlet deviation state, and obtain the automatic control duration; Then sum up all the automatic control durations within the monitoring period to obtain the total value of high air outlet deviation time, and calculate the ratio of the total value of high air outlet deviation time to the total air outlet time of the central air conditioner within the monitoring period to obtain the air outlet control abnormal condition value. If the air outlet control abnormal condition value exceeds the preset air outlet control abnormal condition threshold, an automatic control abnormal signal is generated; If the air outlet control abnormal condition value does not exceed the preset air outlet control abnormal condition threshold, perform numerical calculation on the air outlet control abnormal condition value, air outlet control deterioration value and air outlet control inspection value to obtain the air outlet control warning coefficient. If the air outlet control warning coefficient exceeds the preset air outlet control warning coefficient threshold, an automatic control abnormal signal is generated; if the air outlet control warning coefficient does not exceed the preset air outlet control warning coefficient threshold, an automatic control normal signal is generated.

4. A central air-conditioning energy-saving automatic control system according to claim 1, characterized in that, The control module is communicatively connected to the area monitoring and capturing module. The area monitoring and capturing module marks the indoor space where the central air conditioner is located as the capturing area, and performs real-time monitoring on the capturing area through a monitoring camera. When the unmanned time in the area exceeds the preset unmanned time threshold in the area, the control module generates an area degradation signal and sends the area degradation signal to the user terminal; if the user terminal does not give a feedback instruction within the first specified time, the control module controls the central air conditioner to reduce the operating efficiency; if the user terminal does not give a feedback instruction within the second specified time, the control module controls the central air conditioner to suspend operation.

5. The energy-saving automatic control system for a central air conditioner according to claim 1, characterized in that, It also includes a collection module, a preprocessing module, a calculation model and an automatic adjustment module; The collection module is used to collect environmental data, operating state data of the components of the central air conditioner and central air conditioner system setting parameter data, summarize them into collection data, and send the collection data to the preprocessing module; The preprocessing module is used to receive the collected data and perform smoothing and normalization processing in sequence; The calculation model is used to calculate the pre-processed environmental data and the operating status data of the central air-conditioning component equipment, and output the predicted setting parameter data of the central air-conditioning system, and learn the pre-processed collected data to update the parameters of the enhanced model; The automatic adjustment module is used to automatically adjust the setting parameters of the central air conditioning system according to the predicted setting parameter data output by the calculation model; The user terminal is used to provide users with a visual interface and an operable interface, so that users can monitor the operating status of the air-conditioning system and start or stop the central air-conditioning according to the user's wishes.

6. The energy-saving automatic control system for central air conditioner according to claim 5, characterized in that The acquisition module includes an environmental data acquisition module, a central air-conditioning component equipment operation status data acquisition module and a central air-conditioning system setting parameter data acquisition module; The environmental data acquisition module is used to obtain the outlet water temperature and inlet water temperature of cooling water, the outlet water temperature and inlet water temperature of chilled water in real time, and summarize them into environmental data; The central air-conditioning equipment operation status data acquisition module is used to obtain the chilled water pump power, cooling water pump power and host power in real time, and summarize them into the central air-conditioning equipment operation status data; The central air-conditioning system setting parameter data acquisition module is used to obtain the chilled water pump frequency, cooling water pump frequency and host operation group number in real time, and summarize them into the air-conditioning system setting parameter data.

7. The energy-saving automatic control system for a central air conditioner according to claim 5, characterized in that, The user terminal comprises: The manual monitoring module is used to provide users with a visual interface to present in real time the cooling water outlet temperature and inlet temperature, the chilled water outlet temperature and inlet temperature, the chilled water pump power, the cooling water pump power, the host power, the chilled water pump frequency, the cooling water pump frequency and the number of host operation groups; The manual shutdown module is used to provide an operation interface for users and directly receive the start or shutdown information input by the user. The air conditioning automatic control module realizes the start or shutdown control of the hardware equipment through the OPC protocol according to the start or shutdown information.

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