Ground source heat pump and fan coil partition collaborative control method and system, storage medium and electronic equipment

Abstract

This invention belongs to the field of building HVAC automatic control technology and discloses a zoned collaborative control method for ground source heat pumps and fan coil units. The specific steps are as follows: Step 1: Collect and verify multi-source data; Step 2: Form zoned temperature characterization values ​​and determine heating and cooling needs. This invention determines zoned needs based on multi-source effective temperatures and the minimum number of effective samples, reducing the impact of anomalies, failures, or local heat sources on mode judgment; it clarifies arbitration rules for conflicting zoned needs when sharing heating and cooling modes, avoiding the inner and outer zones issuing opposite mode commands to the same heat pump; it incorporates shutdown confirmation, mode feedback, valve alarms, and minimum hold time into the switching process, reducing the risk of frequent switching and startup under abnormal conditions; and it interlocks the zoned water system, fan coil unit switches, operating modes, and fan speeds, reducing situations where the terminal units operate ineffectively or have inconsistent terminal modes after the main unit stops.

Description

Technical Field

[0001] This invention belongs to the field of building heating, ventilation and air conditioning automatic control technology, specifically a method, system, storage medium and electronic equipment for zoned coordinated control of ground source heat pumps and fan coil units. Background Technology

[0002] Large public buildings are typically characterized by large spans, multiple floors, and significant differences in heat dissipation from people and equipment. The core area of ​​the building is affected by heat dissipation from people, lighting, and equipment, and may still have cooling needs during the transition season. The outer areas near the exterior walls, curtain walls, or entrances are more susceptible to outdoor temperature and solar radiation, and their heating and cooling loads change more rapidly.

[0003] Existing HVAC control systems typically switch between cooling and heating modes based on fixed dates or single temperature points, which presents the following problems: a single temperature point is insufficient to reflect the heat load of different areas; local heat sources, sensor drift, or communication anomalies may lead to misjudgments; when different heat demands occur in the inner and outer zones, systems using a single cold or heat source lack clear mode arbitration rules, potentially resulting in frequent switching, disordered handling of cooling and heating demands, or equipment idling; the lack of status interlocks between the main unit mode, zoned water systems, and fan coil units may lead to situations where the main unit shuts down while the terminal units continue to operate, or the terminal unit mode is inconsistent with the main unit mode; if cooling and heating mode switching is not subject to shutdown confirmation, status confirmation, and minimum hold time constraints, it can easily cause frequent equipment switching; fresh air, alarms, and equipment status are usually handled independently, failing to provide effective safety constraints for the main control process; therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a method, system, storage medium, and electronic equipment for zoned coordinated control of ground source heat pumps and fan coil units, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for zoned coordinated control of ground source heat pumps and fan coil units, the specific steps of which are as follows: Step 1: Collect and verify multi-source data The system periodically collects multi-source operational data from buildings and performs validity assessments on temperature data to obtain a set of valid temperatures. If the number of valid temperature samples in a zone does not meet the requirements, the system is set to a data shortage status, and the zone will not initiate a mode switch. Step 2: Generate zoned temperature characterization values ​​and determine heating and cooling requirements. Based on the effective temperature set, the temperature characterization values ​​of the inner and outer zones are calculated to obtain four types of zone cooling and heating requirements: inner zone cooling, outer zone cooling, inner zone heating, and outer zone heating. Step 3: Arbitration of shared hot and cold mode and zone start / stop requests Under the constraint that the ground source heat pump only outputs a single shared cooling and heating mode, the four types of cooling and heating demands are arbitrated according to the preset priority, and the target mode of the ground source heat pump and the zonal start-up and shutdown requests of the internal and external water systems are output. When there is no effective demand, no-load requests are output. Step 4: Perform protected ground source heat pump mode switching When the target mode is inconsistent with the current mode, the preconditions for switching protection are checked. Once the conditions are met, the switching process of shutdown confirmation, mode confirmation, and start / stop of the zoned water system is executed. If the switching is abnormal, an alarm is output and a safe state is maintained. Step 5: Determining Zoned Shutdown During No-Load Operations Upon receiving a no-load request, the system determines the zone shutdown conditions based on the running time and fan coil unit status, and performs water system shutdown for zones that meet the conditions. Step Six: Execute fan coil unit zone coordinated control Based on the operating status of the zoned water system and the target mode of the ground source heat pump, the fan coil units are subject to on / off control, mode synchronization, and graded fan speed adjustment. Step 7: Execute fresh air linkage control The working mode and wind speed of the fresh air system are adjusted in conjunction with the status of the internal water system, the target mode of the ground source heat pump, the carbon dioxide concentration and the time interval. Step 8: Execute alarms and safety interlocks Periodically monitor the operating status of valves, equipment, sensors, and water systems, generate alarm signals, and execute mode switching, blocking, zone restriction, or standby control according to the alarm level.

[0006] As a preferred technical solution of the present invention, the multi-source building operation data in step one includes: multi-floor multi-parameter sensor temperature, core fan coil unit temperature, representative external zone fan coil unit temperature, remaining fan coil unit temperature, carbon dioxide concentration, and water system and valve status. The validity judgment includes: the data acquisition time does not exceed the preset timeliness threshold; the data is within the preset physical validity range; the change amplitude of adjacent sampling periods does not exceed the preset change rate threshold; the deviation of the data from other valid data in the same area does not exceed the preset deviation threshold. Data that meets the criteria will be added to the effective temperature set of the corresponding region; data that does not meet the criteria will be marked as abnormal data and will not be included in the demand calculation for this control cycle. When the number of valid temperature data for a certain zone is less than the minimum threshold, a data shortage state is generated for that zone. In the data shortage state, the controller maintains the previous stable control state for that zone, or shuts down the water system for that zone and issues a sensor abnormality alarm. Before the data shortage state is resolved, the controller will not initiate a switching between hot and cold modes based on the data from that zone.

[0007] As a preferred embodiment of the present invention, the average effective temperature of the multi-parameter sensor in the inner region in step two can be calculated using the following formula:

[0008] in, As an indicator of internal cooling demand, The average effective temperature of the multi-parameter sensors in the inner zone is denoted as , and the number of effective sensors involved in the average value calculation is denoted as . The number of core fan coil units whose temperature exceeds the threshold of the internal cooling panel. The cooling threshold for the average temperature of the inner zone; The threshold for the number of high-temperature fan coil units in the inner zone is determined only when both the average temperature condition and the number of high-temperature equipment conditions are met. The external zone temperature characterization value is calculated by weighting the effective temperatures of representative external zone fan coil units:

[0009] in, This is the weighted temperature characterization value for the outer zone. The number of representative fan coil units in the outer zone used in the calculation; For the first The effective temperature of a representative external fan coil unit; To correspond to the weights, they can be pre-configured based on the installation location, service area, or historical representativeness. Through weight configuration, fan coil units with larger service areas, significant solar radiation impact, or historically more representative of the external zone load will have a higher degree of influence in the external zone temperature characterization value. The cooling demand indicator for the outer zone is determined by the following formula:

[0010] in, This serves as an indicator of cooling demand in other areas. The weighted temperature cooling threshold for the outer zone; The high temperature threshold for a single point in the outer zone; The threshold for counting the number of fan coil units in the outer zone; The minimum number required to reach this statistical threshold; The function is an indicator function: it takes the value 1 when the condition in parentheses is true, and takes the value 0 otherwise; therefore, as long as any of the following occurs, it is determined that there is a need for cooling in the outer zone; The heating demand in the inner zone can be determined based on the combined average of the effective temperature of the core fan coil unit and the effective temperature of the multi-parameter sensor being lower than the heating threshold of the inner zone; the heating demand in the outer zone is determined when the weighted temperature of the outer zone is lower than the heating threshold of the outer zone.

[0011] As a preferred technical solution of the present invention, the preset priorities in step three are as follows: external zone cooling demand, internal zone cooling demand, internal zone heating demand and external zone heating demand. If the previous priority demand is met, the target mode will not be changed based on the subsequent priority demand. The arbitration rules include: when cooling demand in the outer zone or cooling demand in the inner zone is met, the target mode is cooling; at the same time, the zones with actual cooling demand are recorded, and only the corresponding zone's water system is requested to be started; when there is no cooling demand, when heating demand in the inner zone or heating demand in the outer zone is met, the target mode is heating; at the same time, the zones with actual heating demand are recorded, and only the corresponding zone's water system is requested to be started; when none of the four types of demand are met, a no-load request is generated, and the process proceeds to step five, zone shutdown determination. When both cooling and heating demands exist simultaneously, a unique target mode is determined according to a preset priority, and partitions that do not match the target mode are kept closed or maintained in the previous safe state.

[0012] As a preferred technical solution of the present invention, when the target mode in step four is inconsistent with the current mode, the heat pump switching execution module sequentially judges: whether the system is in manual mode; if it is in manual mode, automatic switching is not performed; whether there are any unfinished switching tasks; if so, new switching requests are rejected; whether the minimum holding time has been reached since the last successful mode switching; if not, the current mode is maintained; whether there are any intermediate position timeout alarms on the seasonal switching valve, evaporator side valve, or condenser side valve; if so, mode switching is prevented; before the target switching, whether both the running inner zone water system and outer zone water system have received shutdown commands and obtained shutdown feedback; whether the water pumps, valves, and protection status related to mode switching meet the preset switching conditions; The following state sequence is executed only if all of the above conditions are met: Shut down the running zone water system; wait and confirm that the water system and necessary pumps are stopped; write the target mode; wait and confirm that the mode feedback is consistent with the target mode; start the inner zone water system and / or outer zone water system according to the zone start / stop request recorded in step three; record the successful switch time, and enter the minimum hold time from that time; If any confirmation step times out, the subsequent startup operation will be stopped, the system will remain in a safe state, and an alarm will be generated.

[0013] As a preferred embodiment of the present invention, the specific content of the no-load zone shutdown determination in step five is as follows: In the absence of load requests, shutdown decisions are made for the internal and external water systems respectively. The internal water system can be shut down when at least one of the following conditions is met: the preset evening period has arrived, or all core fan coil units are in the off state; the external water system can be shut down when representative external fan coil units are in the off state and there are no external load requests. The specific content of executing the fan coil unit zone collaborative control in step six is ​​as follows: For each fan coil unit, the controller reads the status of its respective zone's water system and the current mode of the ground source heat pump, and executes the following rules: When the zone's water system is not running, the fan coil unit is shut down; when the zone's water system is running, the fan coil unit's mode is synchronized to the same cooling or heating mode as the ground source heat pump; when the fan coil unit is in cooling mode, high, medium, and low fan speeds are sequentially controlled based on the local measured temperature; when the fan coil unit is in heating mode, high, medium, and low fan speeds are sequentially controlled based on the local measured temperature; for fan coil units in the outer zones, they can be shut down when the temperature reaches the preset upper limit; during the transitional season, when the local temperature drops to the preset lower comfort limit, the corresponding fan coil unit is shut down; during summer evenings, the inner zone fan coil units can be shut down or restarted according to local temperature thresholds. For fan coil units with adjacent air supply coverage areas or airflow coupling relationships, a master-slave relationship can be established in advance: when the master fan coil unit is turned on, the slave fan coil unit is turned on synchronously, and the high, medium, and low wind speed levels of the master fan coil unit are converted into the corresponding wind speed codes of the slave fan coil unit; the set temperature of the slave fan coil unit can be set with a preset offset relative to its current measured temperature to maintain air supply; when the master fan coil unit is turned off, the slave fan coil unit is turned off synchronously.

[0014] As a preferred embodiment of the present invention, the specific content of executing the fresh air linkage control in step seven is as follows: The operating mode of the fresh air system is related to the status of the internal zone water system: when the internal zone water system is closed, the fresh air system operates in ventilation mode; when the internal zone water system is open, the fresh air system operates in the same mode as the ground source heat pump. During the preset period of human activity, the carbon dioxide concentration of each floor is read. When any effective carbon dioxide concentration is higher than the high threshold, the fresh air system is switched to high speed; when all effective carbon dioxide concentrations are lower than the low threshold and remain below the preset time, the fresh air system is switched to medium speed. The high threshold and the low threshold are different to form a wind speed adjustment hysteresis and reduce the probability of frequent switching near the threshold. The specific content of executing alarms and safety interlocks in step eight is as follows: The controller periodically monitors at least the following states: valve intermediate position timeout, equipment fault code, fan coil unit set temperature exceeding limit, fan coil unit measured temperature exceeding limit, indoor air quality exceeding limit, bypass valve opening abnormality, supply and return water pressure difference abnormality, machine room temperature abnormality, critical sensor abnormality, and insufficient water system flow. If the valve remains in the intermediate position for a preset duration, a mode switching prevention signal is generated. Before this signal is released, step four will not execute mode switching. Other alarms can trigger prompts, restrict startup, shut down the corresponding zone's water system, or enter standby control mode based on the alarm level. The alarm information includes the alarm name, status, the time when the conditions are first met, the duration, trigger details, and suggested handling methods, and is sent to the operation and maintenance terminal.

[0015] To achieve the aforementioned other objective, the present invention provides the following technical solution: a zoned collaborative control system for ground source heat pumps and fan coil units, comprising: The data acquisition module is used to collect data on temperature and humidity, carbon dioxide concentration, fan coil unit status, and water system valve and equipment status from multi-floor sensors. The data validity determination module is used to perform temperature data validity verification and output the valid temperature set, the status of insufficient partition data, and sensor abnormality alarm. The zone demand determination module is used to calculate the zone temperature characterization value based on the effective temperature set and output four types of cooling and heating demand indicators: inner zone cooling, outer zone cooling, inner zone heating, and outer zone heating. The mode arbitration module receives four types of heating and cooling demands. Under the constraint of the single shared heating and cooling mode of the ground source heat pump, it completes mode arbitration according to the preset priority and outputs the target mode, the start and stop requests of the water system in the inner and outer zones. The heat pump switching execution module verifies the switching protection conditions and executes the shutdown confirmation, mode switching, and zoned water system start / stop switching process through a state machine. The fan coil unit collaborative control module enables fan coil unit mode synchronization, graded wind speed adjustment, and master-slave fan coil unit linkage control. The fresh air linkage module adjusts the fresh air mode and fan speed based on the water system status, heat pump mode, carbon dioxide concentration, and time interval. The alarm and safety interlock module monitors equipment, valves, sensors, and water system faults, outputs alarm signals, and blocks mode switching or triggers backup control. The controller and communication module complete the data interaction with field devices and issue control commands. The system's processor executes the program stored in the memory to implement the aforementioned method for zoned coordinated control of the ground source heat pump and fan coil units.

[0016] To achieve the other objective mentioned above, the present invention provides the following technical solution: a computer-readable storage medium storing a computer program thereon, wherein when the computer program is executed by a processor, it implements the steps of the above-mentioned zoned collaborative control method for ground source heat pumps and fan coil units.

[0017] To achieve the other objective mentioned above, the present invention provides the following technical solution: an electronic device, comprising: one or more processors; a storage device; and a communication interface; The storage device stores one or more programs, which are executed by the one or more processors, enabling the electronic device to implement the above-described method for zoned coordinated control of ground source heat pumps and fan coil units.

[0018] The beneficial effects of this invention are as follows: This invention determines zoning requirements based on multi-source effective temperature and the minimum number of effective samples, reducing the impact of anomalies, failures, or localized heat sources on mode judgment. It clarifies arbitration rules for conflicting zoning requirements in shared heating and cooling modes, preventing inner and outer zones from issuing opposite mode commands to the same heat pump. It incorporates shutdown confirmation, mode feedback, valve alarms, and minimum hold time into the switching process, reducing the risk of frequent switching and startup under abnormal conditions. It interlocks zoning water systems, fan coil unit switches, operating modes, and fan speeds, reducing situations where terminal units operate ineffectively or have inconsistent terminal modes after the main unit shuts down. It integrates fresh air operation and equipment alarms into the control process, facilitating the identification and handling of abnormal states by maintenance personnel. The number of sensors, zone division, weight, threshold, hold time, and master-slave fan coil unit relationship are all configurable, making it adaptable to different types of large public buildings. Attached Figure Description

[0019] Figure 1 This is a flowchart of the method of the present invention; Figure 2 This is a system block diagram of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 As shown in the figure, this embodiment of the invention provides a method for zoned coordinated control of ground source heat pumps and fan coil units, and the specific steps are as follows: Step 1: Collect and verify multi-source data The system periodically collects multi-source operational data from buildings and performs validity assessments on temperature data to obtain a set of valid temperatures. If the number of valid temperature samples in a zone does not meet the requirements, the system is set to a data shortage status, and the zone will not initiate a mode switch. Step 2: Generate zoned temperature characterization values ​​and determine heating and cooling requirements. Based on the effective temperature set, the temperature characterization values ​​of the inner and outer zones are calculated to obtain four types of zone cooling and heating requirements: inner zone cooling, outer zone cooling, inner zone heating, and outer zone heating. Step 3: Arbitration of shared hot and cold mode and zone start / stop requests Under the constraint that the ground source heat pump only outputs a single shared cooling and heating mode, the four types of cooling and heating demands are arbitrated according to the preset priority, and the target mode of the ground source heat pump and the zonal start-up and shutdown requests of the internal and external water systems are output. When there is no effective demand, no-load requests are output. Step 4: Perform protected ground source heat pump mode switching When the target mode is inconsistent with the current mode, the preconditions for switching protection are checked. Once the conditions are met, the switching process of shutdown confirmation, mode confirmation, and start / stop of the zoned water system is executed. If the switching is abnormal, an alarm is output and a safe state is maintained. Step 5: Determining Zoned Shutdown During No-Load Operations Upon receiving a no-load request, the system determines the zone shutdown conditions based on the running time and fan coil unit status, and performs water system shutdown for zones that meet the conditions. Step Six: Execute fan coil unit zone coordinated control Based on the operating status of the zoned water system and the target mode of the ground source heat pump, the fan coil units are subject to on / off control, mode synchronization, and graded fan speed adjustment. Step 7: Execute fresh air linkage control The working mode and wind speed of the fresh air system are adjusted in conjunction with the status of the internal water system, the target mode of the ground source heat pump, the carbon dioxide concentration and the time interval. Step 8: Execute alarms and safety interlocks Periodically monitor the operating status of valves, equipment, sensors, and water systems, generate alarm signals, and execute mode switching, blocking, zone restriction, or standby control according to the alarm level.

[0022] This invention employs multi-source temperature effectiveness screening and zoned demand determination to generate a unique target mode for ground source heat pump systems that share a cooling and heating mode. After meeting the safety switching conditions, the water systems in the inner and outer zones are started and stopped as needed, and the on / off status, operating mode, and fan speed of the corresponding fan coil units are kept consistent with the status of the main unit, thereby improving the stability and traceability of the control process. in: The inner zone represents the building area corresponding to the medium-temperature water system, typically including core functional spaces far from the exterior walls; the outer zone represents the building area corresponding to the low-temperature water system, typically including spaces near the exterior walls, curtain walls, entrances / exits, or other spaces significantly affected by the outdoor environment; core fan coil units represent fan coil units pre-selected in the inner zone to characterize the heat load of the core area; representative outer zone fan coil units represent one or more fan coil units pre-selected in the outer zone to characterize the heat load of the outer zone; shared cooling / heating mode indicates that the ground source heat pump system outputs only cooling or heating mode at any given time; the inner and outer zone water systems can be started and stopped separately, but the water systems that are already running use the same cooling / heating mode; effective temperature data represents temperature data that meets the conditions of communication timeliness, preset physical range, and rate of change.

[0023] Among them, the multi-source operation data of the building in step one includes: temperature of multi-story multi-parameter sensor, temperature of core fan coil unit, temperature of representative external fan coil unit, temperature of other fan coil units, carbon dioxide concentration, and water system and valve status; The validity criteria include: the data collection time does not exceed the preset timeliness threshold; the data is within the preset physical validity range; the change in adjacent sampling periods does not exceed the preset change rate threshold; and the deviation between the data and other valid data in the same area does not exceed the preset deviation threshold. Data that meets the criteria will be added to the effective temperature set of the corresponding region; data that does not meet the criteria will be marked as abnormal data and will not be included in the demand calculation for this control cycle. When the number of valid temperature data for a certain zone is less than the minimum threshold, a data shortage state is generated for that zone. In the data shortage state, the controller maintains the previous stable control state for that zone, or shuts down the water system for that zone and issues a sensor abnormality alarm. Before the data shortage state is resolved, the controller will not initiate a switching between hot and cold modes based on the data from that zone.

[0024] Among them, the time threshold, physical temperature range, temperature change rate threshold, same area deviation threshold, and minimum number of effective samples per zone are all configurable parameters that can be adapted according to the sensor model and sampling cycle on site.

[0025] In step two, the average effective temperature of the multi-parameter sensor in the inner zone can be calculated using the following formula:

[0026]

[0027] in, As an indicator of internal cooling demand, This represents the average effective temperature of the multi-parameter sensor in the inner zone. The number of effective sensors participating in the average value calculation; The number of core fan coil units whose temperature exceeds the threshold of the internal cooling panel. The cooling threshold for the average temperature of the inner zone; The threshold for the number of high-temperature fan coil units in the inner zone is determined only when both the average temperature condition and the number of high-temperature equipment conditions are met. The external zone temperature characterization value is calculated by weighting the effective temperatures of representative external zone fan coil units:

[0028] in, This is the weighted temperature characterization value for the outer zone. The number of representative fan coil units in the outer zone used in the calculation; For the first The effective temperature of a representative external fan coil unit; To correspond to the weights, they can be pre-configured based on the installation location, service area, or historical representativeness. Through weight configuration, fan coil units with larger service areas, significant solar radiation impact, or historically more representative of the external zone load will have a higher degree of influence in the external zone temperature characterization value. The cooling demand indicator for the outer zone is determined by the following formula:

[0029] in, This serves as an indicator of cooling demand in other areas. The weighted temperature cooling threshold for the outer zone; The high temperature threshold for a single point in the outer zone; The threshold for counting the number of fan coil units in the outer zone; The minimum number required to reach this statistical threshold; The function is an indicator function: it takes the value 1 when the condition in parentheses is true, and takes the value 0 otherwise; therefore, as long as any of the following occurs, it is determined that there is a need for cooling in the outer zone; The heating demand in the inner zone can be determined based on the combined average of the effective temperature of the core fan coil unit and the effective temperature of the multi-parameter sensor being lower than the heating threshold of the inner zone; the heating demand in the outer zone is determined when the weighted temperature of the outer zone is lower than the heating threshold of the outer zone.

[0030] When generating corresponding cooling demand flags based on the temperature characterization values ​​of the inner and outer zones, a value of 1 indicates the existence of a corresponding demand, and a value of 0 indicates the absence of a corresponding demand. The above thresholds and quantity thresholds are configurable parameters, and their specific values ​​should be determined based on the building orientation, enclosure structure, room use, equipment capacity, and operating data. This invention is not limited by the location number or network address of a specific project.

[0031] In step three, the preset priorities are as follows: cooling demand in the outer zone, cooling demand in the inner zone, heating demand in the inner zone, and heating demand in the outer zone. If the demand of the previous priority is met, the target mode will not be changed based on the demand of the next priority. The arbitration rules include: when cooling demand in the outer zone or cooling demand in the inner zone is met, the target mode is cooling; at the same time, the zones with actual cooling demand are recorded, and only the corresponding zone's water system is requested to be started; when there is no cooling demand, when heating demand in the inner zone or heating demand in the outer zone is met, the target mode is heating; at the same time, the zones with actual heating demand are recorded, and only the corresponding zone's water system is requested to be started; when none of the four types of demand are met, a no-load request is generated, and the process proceeds to step five, zone shutdown determination. When both cooling and heating demands exist simultaneously, a unique target mode is determined according to a preset priority, and partitions that do not match the target mode are kept closed or maintained in the previous safe state.

[0032] Priority can be set as a configuration parameter; in specific projects, it should be determined according to the building operation strategy. For example, preventing rapid rise in temperature or preventing freezing in low temperature can be set as high priority conditions.

[0033] In step four, when the target mode differs from the current mode, the heat pump switching execution module sequentially checks: whether the system is in manual mode; if in manual mode, automatic switching is not performed; whether there are any unfinished switching tasks; if so, new switching requests are rejected; whether the minimum hold time has been reached since the last successful mode switching; if not, the current mode is maintained; whether there are any intermediate position timeout alarms on the seasonal switching valve, evaporator side valve, or condenser side valve; if so, mode switching is prevented; before the target switching, whether both the running internal and external water systems have received shutdown commands and obtained shutdown feedback; and whether the pumps, valves, and protection statuses related to mode switching meet the preset switching conditions. The following state sequence is executed only if all of the above conditions are met: Shut down the running zone water system; wait and confirm that the water system and necessary pumps are stopped; write the target mode; wait and confirm that the mode feedback is consistent with the target mode; start the inner zone water system and / or outer zone water system according to the zone start / stop request recorded in step three; record the successful switch time, and enter the minimum hold time from that time; If any confirmation step times out, the subsequent startup operation will be stopped, the system will remain in a safe state, and an alarm will be generated.

[0034] The minimum holding time can be, for example, 2 hours, but is not limited to this value.

[0035] The specific details of step five, the zone shutdown determination under no-load conditions, are as follows: In the absence of load requests, shutdown decisions are made for the internal and external water systems respectively. The internal water system can be shut down when at least one of the following conditions is met: the preset evening period has arrived, or all core fan coil units are in the off state; the external water system can be shut down when representative external fan coil units are in the off state and there are no external load requests. The specific content of the fan coil unit zone collaborative control in step six is ​​as follows: For each fan coil unit, the controller reads the status of its respective zone's water system and the current mode of the ground source heat pump, and executes the following rules: When the zone's water system is not running, the fan coil unit is shut down; when the zone's water system is running, the fan coil unit's mode is synchronized to the same cooling or heating mode as the ground source heat pump; when the fan coil unit is in cooling mode, high, medium, and low fan speeds are sequentially controlled based on the local measured temperature; when the fan coil unit is in heating mode, high, medium, and low fan speeds are sequentially controlled based on the local measured temperature; for fan coil units in the outer zones, they can be shut down when the temperature reaches the preset upper limit; during the transitional season, when the local temperature drops to the preset lower comfort limit, the corresponding fan coil unit is shut down; during summer evenings, the inner zone fan coil units can be shut down or restarted according to local temperature thresholds. For fan coil units with adjacent air supply coverage areas or airflow coupling relationships, a master-slave relationship can be established in advance: when the master fan coil unit is turned on, the slave fan coil unit is turned on synchronously, and the high, medium, and low wind speed levels of the master fan coil unit are converted into the corresponding wind speed codes of the slave fan coil unit; the set temperature of the slave fan coil unit can be set with a preset offset relative to its current measured temperature to maintain air supply; when the master fan coil unit is turned off, the slave fan coil unit is turned off synchronously.

[0036] In step five, before shutting down a zone, it should be determined again whether there is a load request in another zone that matches the current mode, to avoid shutting down the water system that still needs power. In step six, the temperature boundaries corresponding to high, medium, and low cooling fan speeds are 26.5 degrees Celsius, 25.0 degrees Celsius, and 24.0 degrees Celsius, respectively. The cooling shutdown boundary for the transition season is 23.0 degrees Celsius, and the heating start-up boundary is 21.0 degrees Celsius. Different downgrade and shutdown boundaries can be configured for the inner and outer zones. The above values ​​are only parameters for the example.

[0037] The specific details of executing the fresh air linkage control in step seven are as follows: The operating mode of the fresh air system is related to the status of the internal zone water system: when the internal zone water system is closed, the fresh air system operates in ventilation mode; when the internal zone water system is open, the fresh air system operates in the same mode as the ground source heat pump. During the preset period of human activity, the carbon dioxide concentration of each floor is read. When any effective carbon dioxide concentration is higher than the high threshold, the fresh air system is switched to high speed; when all effective carbon dioxide concentrations are lower than the low threshold and remain below the preset time, the fresh air system is switched to medium speed. The high threshold and the low threshold are different to form a wind speed adjustment hysteresis and reduce the probability of frequent switching near the threshold. The specific details of executing alarms and safety interlocks in step eight are as follows: The controller periodically monitors at least the following states: valve intermediate position timeout, equipment fault code, fan coil unit set temperature exceeding limit, fan coil unit measured temperature exceeding limit, indoor air quality exceeding limit, bypass valve opening abnormality, supply and return water pressure difference abnormality, machine room temperature abnormality, critical sensor abnormality, and insufficient water system flow. If the valve remains in the intermediate position for a preset duration, a mode switching prevention signal is generated. Before this signal is released, step four will not execute mode switching. Other alarms can trigger prompts, restrict startup, shut down the corresponding zone's water system, or enter standby control mode based on the alarm level. The alarm information includes the alarm name, status, the time when the conditions are first met, the duration, trigger details, and suggested handling methods, and is sent to the operation and maintenance terminal.

[0038] In step seven, the high threshold can be set to 900 ppm, and the low threshold can be set to a value less than 900 ppm; during non-human activity periods, the system can run at a preset medium speed.

[0039] like Figure 2 As shown, this embodiment of the invention also provides a zoned collaborative control system for ground source heat pumps and fan coil units, including: The data acquisition module is used to collect data on temperature and humidity, carbon dioxide concentration, fan coil unit status, and water system valve and equipment status from multi-floor sensors. The data validity determination module is used to perform temperature data validity verification and output the valid temperature set, the status of insufficient partition data, and sensor abnormality alarm. The zone demand determination module is used to calculate the zone temperature characterization value based on the effective temperature set and output four types of cooling and heating demand indicators: inner zone cooling, outer zone cooling, inner zone heating, and outer zone heating. The mode arbitration module receives four types of heating and cooling demands. Under the constraint of the single shared heating and cooling mode of the ground source heat pump, it completes mode arbitration according to the preset priority and outputs the target mode, the start and stop requests of the water system in the inner and outer zones. The heat pump switching execution module verifies the switching protection conditions and executes the shutdown confirmation, mode switching, and zoned water system start / stop switching process through a state machine. The fan coil unit collaborative control module enables fan coil unit mode synchronization, graded wind speed adjustment, and master-slave fan coil unit linkage control. The fresh air linkage module adjusts the fresh air mode and fan speed based on the water system status, heat pump mode, carbon dioxide concentration, and time interval. The alarm and safety interlock module monitors equipment, valves, sensors, and water system faults, outputs alarm signals, and blocks mode switching or triggers backup control. The controller and communication module complete the data interaction with field devices and issue control commands. The system's processor executes the program stored in the memory to implement the aforementioned zoned collaborative control method for ground source heat pumps and fan coil units.

[0040] In engineering implementation, multiple logic modules can be combined and deployed in the same controller, or they can be split and deployed in multiple field control units, not limited to a single hardware entity.

[0041] This invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the above-described method for zoned coordinated control of ground source heat pumps and fan coil units.

[0042] The storage medium can be any computer-readable storage medium such as volatile memory, non-volatile memory, disk, optical disk, flash memory, etc., and is not limited to a specific type of storage hardware.

[0043] This invention also provides an electronic device, including: one or more processors; a storage device; and a communication interface; The storage device stores one or more programs, which are executed by one or more processors, enabling the electronic device to implement the above-described zoned coordinated control method for ground source heat pumps and fan coil units.

[0044] This electronic device can be a standalone industrial controller, or a server or edge gateway equipped with control programs. The communication interface supports multiple field communication methods such as industrial bus and Ethernet, and the hardware form can be flexibly selected according to the project scenario.

[0045] Example 1: Refrigeration conditions during the transitional season This embodiment takes a multi-story large public building as the object, deploys multi-parameter sensors on multiple floors of the building, arranges multiple core fan coil units in the inner area, and arranges multiple representative outer area fan coil units in the outer area; the controller periodically collects data from each sensor, fan coil unit, valve, water pump, and CO2 sensor.

[0046] Step 1: Collect and verify multi-source data: The controller periodically reads temperature sampling data and verifies its validity according to data timeliness, physical range, temperature change rate, and deviation within the same area, eliminating abnormal temperatures that are expired, out of range, or have sudden changes; In this embodiment, the sampling data from the multi-parameter sensors on the four floors, the core fan coil unit in the inner zone, and the representative fan coil unit in the outer zone are all valid, and the number of valid samples in each zone meets the minimum sample threshold, so no data shortage alarm is triggered; Step 2: Generate zoned temperature characterization values ​​and determine cooling and heating needs: The effective average temperature of the multi-parameter sensors in the inner zone is calculated to be 23.6℃, ​​which is higher than the average cooling threshold of 23℃ for the inner zone. At the same time, the number of core fan coil units that exceed the threshold of the inner zone cooling panel reaches the set threshold, thus determining that the cooling demand in the inner zone is valid. The weighted temperature characterization value of the representative fan coil unit in the outer zone is 26.3℃, which is higher than the weighted cooling threshold of 26℃ for the outer zone, thus determining that the cooling demand in the outer zone is valid. Step 3 Arbitration of shared heating and cooling modes and zone start / stop requests: According to the preset priority, there are cooling needs in the outer zone and the inner zone. The arbitration target mode is cooling. Request to start the water system in the inner zone and the water system in the outer zone at the same time, without conflicting zones; Step 4: Perform the protected ground source heat pump mode switch: Assume the heat pump is currently in heating mode; verify that the manual mode is off, there is no ongoing switching task, the minimum hold time has exceeded 2 hours since the last mode switch, and there are no valve timeout alarms in the middle position, and all switching protection conditions are met; sequentially shut down the water systems of the inner and outer zones, and wait for the water pumps and valves to report that the shutdown is complete; issue a cooling mode command, and confirm that the ground source heat pump feedback mode is cooling; then sequentially start the water systems of the inner and outer zones, record the moment of successful switching, and restart the minimum hold time timing; Step 5: Zone shutdown determination under no-load conditions: There is a cooling load in this operating condition, and the no-load shutdown process is not triggered. Step Six: Perform zoned coordinated control of fan coil units: The water systems in both the inner and outer zones are running, and all fan coil units are simultaneously switched to cooling mode; based on the measured indoor temperature of the fan coil units, high, medium, and low fan speeds are output; during the transitional season, when the local temperature drops to 23.0℃, the corresponding fan coil unit is shut down; for fan coil unit master-slave groups with airflow coupling, when the master fan coil unit is turned on, the slave fan coil unit is turned on simultaneously, and the fan speed level is mapped and converted; when the master unit is turned off, the slave unit is turned off simultaneously. Step 7: Implement fresh air linkage control: The internal water system is on, and the fresh air system switches to cooling mode; during the current working hours, monitor the CO2 concentration on each floor; when any effective CO2 level exceeds 900 ppm, the fresh air system switches to high speed; when all CO2 levels are below 800 ppm for the set duration, the fresh air system switches to medium speed; when the CO2 level is in the 800-900 ppm hysteresis range, maintain the original fan speed to avoid frequent start-stop cycles; during non-working hours, the fresh air system operates at medium speed. Step 8: Implement alarms and safety interlocks: Monitor valve position, equipment failure, and sensor status in real time; In this embodiment, there is no valve intermediate position timeout, no equipment failure, and no alarm for blocking mode switching is generated; All equipment operates normally.

[0047] Example 2: Heating conditions during the transitional season In this embodiment, there is no cooling requirement. The combined average temperature of the multi-parameter sensors in the inner zone and the core fan coil unit is 20.2℃, which is lower than the inner zone heating threshold of 21℃, thus the inner zone heating requirement is met. The weighted temperature characterization value of the outer zone is 20.5℃, which is lower than the outer zone heating threshold of 21℃, thus the outer zone heating requirement is met.

[0048] Step 3: Arbitration determines the target mode is heating, and requests the activation of both the inner and outer zone water systems; after completing the mode switching protection verification, the ground source heat pump is switched to heating mode, and the corresponding zone water system is activated. Step 6: Fan coil unit coordinated control: The fan coil units are synchronously in heating mode; when the temperature is low, the fan speed is high, and when the temperature rises, the fan speed is gradually reduced; the fan coil units in the outer zone are directly shut down when the indoor temperature reaches the preset upper limit to avoid ineffective heating and air supply. Step 7: Fresh air linkage: The internal water system is turned on, the fresh air switches to heating mode, and the CO2 concentration participates in the fresh air speed adjustment.

[0049] Example 3: Sensor Abnormal Degradation Operation Condition Two representative fan coil units in the outer zone were tested. One of them had a communication failure, and the sampling data was determined to be invalid in one step. The remaining fan coil unit had valid data. The number of valid samples just reached the minimum sample threshold of the partition, so it continued to participate in the temperature characterization calculation of the outer zone. At the same time, a sensor abnormality alarm was output. If multiple representative fan coil units in the outer zone fail simultaneously, and the number of valid samples in the zone falls below the minimum threshold, the outer zone data shortage state will be set. The controller will maintain the previous stable control state in the outer zone and will not be allowed to initiate mode switching based on the outer zone data. It can only respond to the already determined target mode to start and stop the water system.

[0050] Example 4: Mode switching protection fault condition When the local source heat pump needs to switch between cooling and heating, if the mode switching valve is detected to be in the middle position for an extended period, the eight-alarm safety interlock will generate a valve middle position timeout alarm. This alarm will block the mode switching process of step four, and even if the temperature meets the cooling and heating requirements, the heat pump mode switching will not be performed. Only after the valve is in position and the alarm is cleared will the controller re-execute the mode arbitration and switching precondition verification in full.

[0051] Example 5: No-load zone shutdown condition When building personnel leave at night, all four types of heating and cooling demands are not met, and there are no load requests for the three outputs. The five-zone shutdown judgment is as follows: if the nighttime shutdown time is reached and all core fan coil units are in the off state, then the internal zone water system is shut down; if all representative external fan coil units are shut down and there are no load requests from external zones, then the external zone water system is shut down; before shutdown, the load of another zone is checked to prevent accidental shutdown of water systems that still have energy supply needs.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for zoned coordinated control of ground source heat pumps and fan coil units, characterized in that, The specific steps are as follows: Step 1: Collect and verify multi-source data The system periodically collects multi-source operational data from buildings and performs validity assessments on temperature data to obtain a set of valid temperatures. If the number of valid temperature samples in a zone does not meet the requirements, the system is set to a data shortage status, and the zone will not initiate a mode switch. Step 2: Generate zoned temperature characterization values ​​and determine heating and cooling requirements. Based on the effective temperature set, the temperature characterization values ​​of the inner and outer zones are calculated to obtain four types of zone cooling and heating requirements: inner zone cooling, outer zone cooling, inner zone heating, and outer zone heating. Step 3: Arbitration of shared hot and cold mode and zone start / stop requests Under the constraint that the ground source heat pump only outputs a single shared cooling and heating mode, the four types of cooling and heating demands are arbitrated according to the preset priority, and the target mode of the ground source heat pump and the zonal start-up and shutdown requests of the internal and external water systems are output. When there is no effective demand, no-load requests are output. Step 4: Perform protected ground source heat pump mode switching When the target mode is inconsistent with the current mode, the preconditions for switching protection are checked. Once the conditions are met, the switching process of shutdown confirmation, mode confirmation, and start / stop of the zoned water system is executed. If the switching is abnormal, an alarm is output and a safe state is maintained. Step 5: Determining Zoned Shutdown During No-Load Operations Upon receiving a no-load request, the system determines the zone shutdown conditions based on the running time and fan coil unit status, and performs water system shutdown for zones that meet the conditions. Step Six: Execute fan coil unit zone coordinated control Based on the operating status of the zoned water system and the target mode of the ground source heat pump, the fan coil units are subject to on / off control, mode synchronization, and graded fan speed adjustment. Step 7: Execute fresh air linkage control The working mode and wind speed of the fresh air system are adjusted in conjunction with the status of the internal water system, the target mode of the ground source heat pump, the carbon dioxide concentration and the time interval. Step 8: Execute alarms and safety interlocks Periodically monitor the operating status of valves, equipment, sensors, and water systems, generate alarm signals, and execute mode switching, blocking, zone restriction, or standby control according to the alarm level.

2. The method for zoned coordinated control of ground source heat pump and fan coil unit according to claim 1, characterized in that: The multi-source building operation data mentioned in step one includes: multi-floor multi-parameter sensor temperature, core fan coil unit temperature, representative external fan coil unit temperature, other fan coil unit temperature, carbon dioxide concentration, and water system and valve status; The validity judgment includes: the data acquisition time does not exceed the preset timeliness threshold; the data is within the preset physical validity range; the change amplitude of adjacent sampling periods does not exceed the preset change rate threshold; the deviation of the data from other valid data in the same area does not exceed the preset deviation threshold. Data that meets the criteria will be added to the effective temperature set of the corresponding region; data that does not meet the criteria will be marked as abnormal data and will not be included in the demand calculation for this control cycle. When the number of valid temperature data for a certain zone is less than the minimum threshold, a data shortage state is generated for that zone. In the data shortage state, the controller maintains the previous stable control state for that zone, or shuts down the water system for that zone and issues a sensor abnormality alarm. Before the data shortage state is resolved, the controller will not initiate a switching between hot and cold modes based on the data from that zone.

3. The method for zoned coordinated control of ground source heat pump and fan coil unit according to claim 1, characterized in that: The average effective temperature of the multi-parameter sensor in the inner zone mentioned in step two can be calculated using the following formula: ;in, As an indicator of internal cooling demand, This represents the average effective temperature of the multi-parameter sensor in the inner zone. The number of effective sensors participating in the average value calculation; The number of core fan coil units whose temperature exceeds the threshold of the internal cooling panel. The cooling threshold for the average temperature of the inner zone; The threshold for the number of high-temperature fan coil units in the inner zone is determined only when both the average temperature condition and the number of high-temperature equipment conditions are met. The external zone temperature characterization value is calculated by weighting the effective temperatures of representative external zone fan coil units: ;in, This is the weighted temperature characterization value for the outer zone. The number of representative fan coil units in the outer zone used in the calculation; The effective temperature of the first representative fan coil unit in the outer zone; To correspond to the weight, it can be pre-configured according to the installation location, service area, or historical representativeness; through weight configuration, fan coil units with larger service areas, significant solar radiation impact, or historically more representative of the external zone load will have a higher degree of influence in the external zone temperature characterization value; The cooling demand indicator for the outer zone is determined by the following formula: ;in, This serves as an indicator of cooling demand in other areas. The weighted temperature cooling threshold for the outer zone; The high temperature threshold for a single point in the outer zone; is the statistical threshold for the number of fan coil units in the outer zone; is the minimum number required to reach this statistical threshold; is an indicator function: it takes the value 1 when the condition in parentheses is true, and 0 otherwise; therefore, as long as any of the following occurs, it is determined that there is cooling demand in the outer zone; The heating demand in the inner zone can be determined based on the combined average of the effective temperature of the core fan coil unit and the effective temperature of the multi-parameter sensor being lower than the heating threshold of the inner zone; the heating demand in the outer zone is determined when the weighted temperature of the outer zone is lower than the heating threshold of the outer zone.

4. The method for zoned coordinated control of ground source heat pump and fan coil unit according to claim 1, characterized in that: The preset priorities mentioned in step three are as follows: cooling demand in the outer zone, cooling demand in the inner zone, heating demand in the inner zone, and heating demand in the outer zone. If the previous priority demand is met, the target mode will not be changed based on the subsequent priority demand. The arbitration rules include: when cooling demand in the outer zone or cooling demand in the inner zone is met, the target mode is cooling; at the same time, the zones with actual cooling demand are recorded, and only the corresponding zone's water system is requested to be started; when there is no cooling demand, when heating demand in the inner zone or heating demand in the outer zone is met, the target mode is heating; at the same time, the zones with actual heating demand are recorded, and only the corresponding zone's water system is requested to be started; when none of the four types of demand are met, a no-load request is generated, and the process proceeds to step five, zone shutdown determination. When both cooling and heating demands exist simultaneously, a unique target mode is determined according to a preset priority, and partitions that do not match the target mode are kept closed or maintained in the previous safe state.

5. The method for zoned coordinated control of ground source heat pump and fan coil unit according to claim 1, characterized in that: When the target mode described in step four is inconsistent with the current mode, the heat pump switching execution module sequentially determines: whether the system is in manual mode; if in manual mode, automatic switching is not performed; whether there are any unfinished switching tasks; if so, new switching requests are rejected; whether the minimum hold time has been reached since the last successful mode switching; if not, the current mode is maintained; whether there are any intermediate position timeout alarms on the seasonal switching valve, evaporator side valve, or condenser side valve; if so, mode switching is prevented; before the target switching, whether both the running internal and external water systems have received shutdown commands and obtained shutdown feedback; and whether the pumps, valves, and protection statuses related to mode switching meet the preset switching conditions. The following state sequence is executed only if all of the above conditions are met: Shut down the running zone water system; wait and confirm that the water system and necessary pumps are stopped; write the target mode; wait and confirm that the mode feedback is consistent with the target mode; start the inner zone water system and / or outer zone water system according to the zone start / stop request recorded in step three; record the successful switch time, and enter the minimum hold time from that time; If any confirmation step times out, the subsequent startup operation will be stopped, the system will remain in a safe state, and an alarm will be generated.

6. The method for zoned coordinated control of ground source heat pump and fan coil unit according to claim 1, characterized in that: The specific details of the zone shutdown determination under no-load conditions described in step five are as follows: In the absence of load requests, shutdown decisions are made for the internal and external water systems respectively. The internal water system can be shut down when at least one of the following conditions is met: the preset evening period has arrived, or all core fan coil units are in the off state; the external water system can be shut down when representative external fan coil units are in the off state and there are no external load requests. The specific content of executing the fan coil unit zone collaborative control in step six is ​​as follows: For each fan coil unit, the controller reads the status of its respective zone's water system and the current mode of the ground source heat pump, and executes the following rules: When the zone's water system is not running, the fan coil unit is shut down; when the zone's water system is running, the fan coil unit's mode is synchronized to the same cooling or heating mode as the ground source heat pump; when the fan coil unit is in cooling mode, high, medium, and low fan speeds are sequentially controlled based on the local measured temperature; when the fan coil unit is in heating mode, high, medium, and low fan speeds are sequentially controlled based on the local measured temperature; for fan coil units in the outer zones, they can be shut down when the temperature reaches the preset upper limit; during the transitional season, when the local temperature drops to the preset lower comfort limit, the corresponding fan coil unit is shut down; during summer evenings, the inner zone fan coil units can be shut down or restarted according to local temperature thresholds. For fan coil units with adjacent air supply coverage areas or airflow coupling relationships, a master-slave relationship can be established in advance: when the master fan coil unit is turned on, the slave fan coil unit is turned on synchronously, and the high, medium, and low wind speed levels of the master fan coil unit are converted into the corresponding wind speed codes of the slave fan coil unit; the set temperature of the slave fan coil unit can be set with a preset offset relative to its current measured temperature to maintain air supply; when the master fan coil unit is turned off, the slave fan coil unit is turned off synchronously.

7. The method for zoned coordinated control of ground source heat pump and fan coil unit according to claim 1, characterized in that: The specific content of executing the fresh air linkage control in step seven is as follows: The operating mode of the fresh air system is related to the status of the internal zone water system: when the internal zone water system is closed, the fresh air system operates in ventilation mode; when the internal zone water system is open, the fresh air system operates in the same mode as the ground source heat pump. During the preset period of human activity, the carbon dioxide concentration of each floor is read. When any effective carbon dioxide concentration is higher than the high threshold, the fresh air system is switched to high speed; when all effective carbon dioxide concentrations are lower than the low threshold and remain below the preset time, the fresh air system is switched to medium speed. The high threshold and the low threshold are different to form a wind speed adjustment hysteresis and reduce the probability of frequent switching near the threshold. The specific content of executing alarms and safety interlocks in step eight is as follows: The controller periodically monitors at least the following states: valve intermediate position timeout, equipment fault code, fan coil unit set temperature exceeding limit, fan coil unit measured temperature exceeding limit, indoor air quality exceeding limit, bypass valve opening abnormality, supply and return water pressure difference abnormality, machine room temperature abnormality, critical sensor abnormality, and insufficient water system flow. If the valve remains in the intermediate position for a preset duration, a mode switching prevention signal is generated. Before this signal is released, step four will not execute mode switching. Other alarms can trigger prompts, restrict startup, shut down the corresponding zone's water system, or enter standby control mode based on the alarm level. The alarm information includes the alarm name, status, the time when the conditions are first met, the duration, trigger details, and suggested handling methods, and is sent to the operation and maintenance terminal.

8. A zoned collaborative control system for ground source heat pumps and fan coil units, characterized in that, include: The data acquisition module is used to collect data on temperature and humidity, carbon dioxide concentration, fan coil unit status, and water system valve and equipment status from multi-floor sensors. The data validity determination module is used to perform temperature data validity verification and output the valid temperature set, the status of insufficient partition data, and sensor abnormality alarm. The zone demand determination module is used to calculate the zone temperature characterization value based on the effective temperature set and output four types of cooling and heating demand indicators: inner zone cooling, outer zone cooling, inner zone heating, and outer zone heating. The mode arbitration module receives four types of heating and cooling demands. Under the constraint of the single shared heating and cooling mode of the ground source heat pump, it completes mode arbitration according to the preset priority and outputs the target mode, the start and stop requests of the water system in the inner and outer zones. The heat pump switching execution module verifies the switching protection conditions and executes the shutdown confirmation, mode switching, and zoned water system start / stop switching process through a state machine. The fan coil unit collaborative control module enables fan coil unit mode synchronization, graded wind speed adjustment, and master-slave fan coil unit linkage control. The fresh air linkage module adjusts the fresh air mode and fan speed based on the water system status, heat pump mode, carbon dioxide concentration, and time interval. The alarm and safety interlock module monitors equipment, valves, sensors, and water system faults, outputs alarm signals, and blocks mode switching or triggers backup control. The controller and communication module complete the data interaction with field devices and issue control commands. The system's processor executes the program stored in the memory to implement the zoned collaborative control method for ground source heat pumps and fan coil units as described in any one of claims 1-7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the zonal coordinated control method for ground source heat pumps and fan coil units as described in any one of claims 1-7.

10. An electronic device, characterized in that, include: One or more processors; storage devices; Communication interface; The storage device stores one or more programs, which are executed by the one or more processors, causing the electronic device to implement the zoned collaborative control method for ground source heat pumps and fan coil units as described in any one of claims 1-7.

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