Intelligent five-constant air heating and ventilation integrated control system

Abstract

The invention discloses an intelligent five-constant air heating and ventilation integrated control system which comprises a master control, a master control display screen and a plurality of sub-controls, and the master control display screen and the sub-controls are connected to the master control. Each branch controller comprises a main control board, an intelligent chain 4G-OTA, a dew point panel, a water mixing panel, an intelligent hub, a five-in-one sensor, a heat pump host, a fresh air host and an intelligent chain WIFI-DTU or an intelligent chain 4G-DTU, wherein the intelligent chain 4G-OTA, the dew point panel, the water mixing panel, the intelligent hub, the five-in-one sensor, the heat pump host and the fresh air host are connected to the main control board. A Modbus communication module, a peripheral data integration module, a centralized control core coordination module, a data storage module, a fault judgment module and a 4G networking diagnosis module are integrated on the main control board. The system is high in control integration level, good in control coherence between the master control and each sub-control and between each sub-control and each specific function system, capable of communicating with common peripherals in the heating and ventilation field such as a fresh air ventilator, a heat pump host, a dew point panel and a water mixing panel, and capable of achieving constant and comfortable indoor environment according to related control logic. The use comfort is good, and the overall cost can be effectively controlled.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air treatment, and specifically relates to an intelligent five-constant air heating and ventilation integrated control system. BACKGROUND

[0002] The five-constant system is a big test of the heating and ventilation technical capability, which includes equipment, water system, air system, humidification and dehumidification, pipeline design, heat preservation and noise reduction, low-energy-consumption passive building, water balance system, radiation temperature regulation system and air flow organization design.

[0003] At present, the five-constant systems are various, which can be roughly divided into full-radiation five-constant systems, multi-terminal five-constant systems, capillary five-constant systems and patched five-constant systems. These five-constant systems have a common problem, that is, the control integration degree is not high enough, and the control connection between the total control and each sub-control and the control connection between the sub-control and each specific function system is not good enough, which affects the use comfort and requires special supporting equipment to achieve good control and improve the overall cost. SUMMARY

[0004] The application provides an intelligent five-constant air heating and ventilation integrated control system, which has high control integration degree, good control connection between the total control and each sub-control and between the sub-control and each specific function system, can communicate with some peripherals in the heating and ventilation field such as a fresh air machine, a heat pump main machine, a dew point panel and a mixed water panel, realizes constant comfort of an indoor environment according to relevant control logic, has good use comfort and can effectively control the overall cost.

[0005] In order to solve the above technical problems, the application provides the following technical scheme: an intelligent five-constant air heating and ventilation integrated control system, which comprises a total control, a total control display screen connected to the total control and a plurality of sub-controls, the total control controls each sub-control through the total control display screen, each sub-control comprises a main control board, a smart chain 4G-OTA connected to the main control board, a dew point panel, a mixed water panel, a smart hub, a five-in-one sensor, a heat pump main machine, a fresh air main machine and a smart chain WIFI-DTU or a smart chain 4G-DTU. The main control board is integrated with a Modbus communication module, an external device data integration module, a centralized control core coordination module, a data storage module, a fault judgment module and a 4G networking diagnosis module. The Modbus communication module comprises a Modbus host one, a Modbus slave one, a Modbus host two and a Modbus slave two. The dew point panel, the mixed water panel, the intelligent hub and the five-in-one sensor are connected to a Modbus host one, the total control display screen is connected to a Modbus slave one, the fresh air host and the heat pump host are connected to a Modbus host two, and the intelligent chain WIFI-DTU or the intelligent chain 4G-DTU is connected to a Modbus slave two.

[0006] Preferably, the Modbus communication module is used to realize the functions of each Modbus host, read the data of the peripherals and write the commands of the peripherals, and realize the functions of each Modbus slave, accept the commands and setting parameters issued by the upper computer.

[0007] Preferably, the peripheral data integration module is based on the Modbus communication module, reads the parameters of all peripherals according to the Modbus register address table of the peripherals, and integrates them into the memory in a suitable manner, so as to facilitate the call of the upper application layer.

[0008] Preferably, the integrated control core coordination module is the core of the entire control part, used to receive the power-on and power-off commands, mode switching commands and temperature setting commands issued by the upper computer master control panel, and control the peripherals to realize specific functions according to the set control logic in combination with the peripheral data integration module.

[0009] Preferably, the data storage module is responsible for recording the working data of the control part, including the set temperature, the device address and the working mode.

[0010] Preferably, the fault judgment module is used to monitor and diagnose the communication state and the working state of the peripherals, so as to timely handle the fault condition, and the fault judgment module includes the implementation of a fault detection algorithm, a state machine or other fault judgment mechanism.

[0011] Preferably, the 4G networking diagnosis module is used to automatically identify whether the 4G-DTU mode of the peripheral is connected, and if the 4G-DTU module is connected to the hardware, the current running state can be uploaded to the cloud platform or the control instructions of the cloud platform are accepted and issued.

[0012] Preferably, the dew point panel is divided into a dew point panel 17 and a dew point panel ST850.

[0013] Preferably, the total control display screen adopts a 7-inch screen and is used to control the sub-controllers of all rooms.

[0014] Compared with the prior art, the present application has the following beneficial effects: The control has high integration, good control continuity between the total control and each sub-control, and good use comfort between the sub-controllers and each specific function system.

[0015] Realize the communication function of the new fan, heat pump host, dew point panel, water mixing panel and other peripherals commonly used in the field of heating and ventilation, complete data reading, command issuing control function, and realize the constant comfort of indoor environment according to the related control logic, and the overall cost can be effectively controlled.

[0016] Realize receiving the control command of the upper computer, realize the functions such as switching on and off, mode switching and temperature setting of the integrated system.

[0017] Realize coordinating all peripherals to complete the centralized control function of the five constant system.

[0018] Remote diagnosis running state can be performed, and fault alarm can be performed in time. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the hardware control schematic diagram of the application; Figure 2 It is the function module schematic diagram of the application; Figure 3 It is the principle diagram of the Modbus communication module in the application; Figure 4 It is the principle diagram of the peripheral data integration module in the application; Figure 5 It is the principle diagram of the centralized control core coordination module in the application; Figure 6 It is the principle diagram of the data storage module in the application; Figure 7 It is the principle diagram of the fault judgment module in the application; Figure 8 It is the principle diagram of the 4G networking diagnosis module in the application; Figure 9 It is the actual application hardware connection schematic diagram of the application; Figure 10 It is the actual application hardware control schematic diagram of the application; Figure 11 It is the actual application hardware list picture of the application; Figure 12 It is the RS485 communication wiring diagram of the application; Figure 13 It is the AI scene main interface diagram of the application; Figure 14 It is the user setting interface diagram of the application; Figure 15 It is the mode selection interface diagram of the application; Figure 16 It is the engineer setting intelligent hub interface diagram of the application; Figure 17 It is the control hardware diagram of the application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] Embodiment 1: as shown in Figure 1 , 9 , 11 and 12, an intelligent five-constant air heating and ventilation integrated control system includes a master control and a master control display screen and a plurality of sub-controls connected to the master control, the master control controls each sub-control through the master control display screen, each sub-control includes a main control board, a smart chain 4G-OTA connected to the main control board, a dew point panel, a water mixing panel, an intelligent hub, a five-in-one sensor, a heat pump host, a fresh air host and a smart chain WIFI-DTU or a smart chain 4G-DTU. As shown in Figure 2 , the main control board is integrated with a Modbus communication module, a peripheral data integration module, a centralized control core coordination module, a data storage module, a fault judgment module and a 4G networking diagnosis module. As shown in Figure 3 , the Modbus communication module is used to realize the functions of each Modbus host, read the data of the peripheral device, and write the command of the peripheral device; and realize the functions of each Modbus slave, used to accept the command and setting parameter issued by the upper computer.

[0022] As shown in Figure 4 , the peripheral data integration module is based on the Modbus communication module, reads the parameters of all peripherals according to the Modbus register address table of the peripherals, and integrates them into the memory in a suitable way for the upper application layer to call.

[0023] As shown in Figure 5 , the centralized control core coordination module is the core of the entire control part, used to receive the power-on / off command, mode switching command, temperature setting command issued by the upper computer main control panel, and control the peripherals to realize specific functions according to the set control logic in combination with the peripheral data integration module.

[0024] As shown in Figure 6 , the data storage module is responsible for recording the working data of the control part, including the set temperature, device address and working mode.

[0025] As shown in Figure 7As shown, the fault judgment module is used for monitoring and diagnosing the communication state and working state of the peripheral device, so as to timely handle the fault condition, and the fault judgment module comprises a fault detection algorithm, a state machine or other fault judgment mechanism.

[0026] As shown in Figure 8 As shown, the 4G networking diagnosis module is automatically identified according to whether the peripheral device 4G-DTU mode is connected, if the hardware is connected with the 4G-DTU module, then the current running state can be uploaded to the cloud platform, or the control instruction issued by the cloud platform is accepted.

[0027] Embodiment 2: as shown in Figure 10 As shown, the Modbus communication module comprises a Modbus host computer one, a Modbus slave computer one, a Modbus host computer two and a Modbus slave computer two; the dew point panel, the water mixing panel, the intelligent hub and the five-in-one sensor are connected to the Modbus host computer one, the total control display screen is connected to the Modbus slave computer one, the fresh air host computer and the heat pump host computer are connected to the Modbus host computer two, and the intelligent chain WIFI-DTU or the intelligent chain 4G-DTU is connected to the Modbus slave computer two.

[0028] Embodiment 3: the dew point panel is divided into dew point panel 17 and dew point panel ST850. The total control display screen adopts a 7-inch screen and is used for controlling the sub-controllers of all rooms.

[0029] Embodiment 4: as shown in Figure 12-17 As shown, the specific product F429 version intelligent centralized control system of the application is an integrated intelligent control scheme of the heating and ventilation five constant scene, the RS485 communication wiring is the hardware core link for stable operation of the system, and the five constant system operation logic, control strategy and AI intelligent algorithm are the "brain" and "soul" of the system. The following is the hardware wiring basic process of the product of the application and the system core operation and intelligent control logic: Process 1: device classification and address pre-planning Process action: first, refer to the "slave address range" on the left side of the wiring diagram to clearly define the exclusive address interval of each device (such as fresh air host computer 1-5, heat pump host computer 6-10, water mixing panel 31-100, etc.), and allocate a unique address to the device to be connected.

[0030] Analysis: RS485 is a half-duplex bus communication, and address uniqueness is the premise of avoiding device communication conflict Figure 12 The hollow air quality sensor (150 / 160), the intelligent knob (131 / 146) and other devices are marked with exclusive addresses, which enables the LFH centralized control master station to accurately identify and call the corresponding device.

[0031] Process 2: RS485 bus link building The following is the RS485 communication wiring diagram for version F429, which clearly marks the address range, terminal blocks (A / B terminals), and power supply method of each device. It is the core basis for subsequent wiring operations: Step 3: Connecting the power supply links to individual devices Process Actions: Low-power devices (air quality sensor, 7-inch screen): connected to the LFH centralized control system with +12V / GND DC power supply; Standard equipment (mixing panel, smart knob, PHE hub): connect to AC220V mains power as close as possible; High-power equipment (heat pump main unit): Connect to AC220V / 380V mains power.

[0032] Analysis: Power supply matching is the foundation for stable equipment operation - low-power devices use 12V DC to avoid overload, while high-power devices use high-voltage AC mains power to meet power requirements; the "power supply nearby" label is to reduce voltage drop losses over long-distance wiring.

[0033] Step 4: Communication Integration and Testing of Core Modules Analysis: The cloud controller's 4G and APP modules serve as remote control entry points, communicating with the main station via RS485 to achieve dual-terminal intelligent control ("local + remote"). The PHE central hub and refrigerant manifold box are the execution terminals, forming a closed-loop HVAC intelligent control system of "sensing-control-execution" together with the main station. After completing the above wiring deployment, the core system operation relies on the five constant control logics and AI intelligent algorithms, as detailed below: Process: After wiring is completed, the LFH central control station is linked through the 7-inch screen and APP module (both connected to RS485 bus) to test the command response of equipment such as fresh air unit and refrigerant branch box.

[0034] Analysis: The cloud controller's 4G and APP modules serve as remote control entry points, communicating with the main station via RS485 to achieve dual-terminal intelligent control ("local + remote"). The PHE central hub and refrigerant branch box are the execution terminals, forming a closed-loop HVAC intelligent control system of "sensing-control-execution" together with the main station. After completing the above wiring deployment, the core operation of the system relies on the five constant control logics and AI intelligent algorithms.

[0035] Part Two: Core Components and Control Objectives of the Five Constant Systems The system consists of two core actuators that receive commands from the LFH central control master station via an RS485 bus and operate in coordination: Fresh air dehumidifier: responsible for processing air (temperature, humidity, oxygen, cleanliness), and its operating parameters are fed back to the central control station in real time via RS485.

[0036] Radiant water distributor (thermoelectric valve): responsible for handling the temperature of radiant cold / hot surfaces. The on / off status and opening degree of the thermoelectric valve are precisely controlled by the central control station.

[0037] The five constant goals are: constant temperature, constant humidity, constant oxygen, constant cleanliness, and constant quietness.

[0038] Core safety constraint: The radiant surface temperature must always be higher than the indoor air dew point temperature (during cooling) to prevent condensation. This is the "red line" for all operating modes, and the central control station dynamically verifies this by collecting real-time temperature and humidity data.

[0039] Part Three: Detailed Explanation of the Operational Logic of Each Basic Mode Mode 1: Cooling Mode Objective: To lower the room temperature and maintain a comfortable humidity level.

[0040] Triggering conditions: The indoor panel set temperature is less than the actual indoor temperature, and the deviation is greater than the dead zone (e.g., 0.5℃). This temperature deviation data is uploaded by the indoor panel sensor to the central control station via RS485 for determination.

[0041] Control logic and action sequence: Dew point calculation and safety verification: Logic: The central control station calculates the dew point temperature under the current environment based on the real-time indoor temperature and humidity data uploaded via RS485.

[0042] Action: Set the safe radiant water supply temperature = current dew point temperature + anti-condensation safety margin (e.g., 1.5-2℃), and send this temperature threshold to the mixing center controller. This is the upper limit temperature for the radiant system to operate.

[0043] Radiation system is started first: Logic: The central control station compares the safe radiant water supply temperature with the current water supply temperature (uploaded by the water temperature sensor) to determine the cooling capacity of the radiant system.

[0044] Action: If cooling capacity is available, the central control station sends instructions via RS485. According to the instructions on the panel, (underfloor cooling, ceiling cooling, or fan coil unit) the thermoelectric valve of the corresponding room of the water distributor is opened. At the same time, the mixing center or heat pump is adjusted to send cold water at a safe radiant water supply temperature into the capillary tube or radiant panel for gentle radiant cooling.

[0045] Fresh air dehumidifier auxiliary dehumidification: Logic A (Temperature Priority): If the radiant cooling capacity is insufficient (room temperature remains higher than the set value, and the sensor continues to upload deviation data), or if the safe radiant water supply temperature is too high, the cooling will be ineffective.

[0046] Action A: The central control station issues a command to start the cooling function of the fresh air dehumidifier (through the surface cooler), directly cooling the supply air and performing forced convection heat exchange to quickly lower the room temperature.

[0047] Logic B (Humidity Priority): The central control station monitors indoor humidity data in real time. If the humidity exceeds the set upper limit (e.g., 60%RH), the system will take action.

[0048] Action B: Start the dehumidification function of the fresh air dehumidifier. At this time, the central control station can simultaneously instruct to start the cooling function. The dehumidification function of the dehumidifier is divided into three-pipe dehumidification and chilled water dehumidification (to deal with the condensation heat release during the dehumidification process), ensuring coordinated control of temperature and humidity.

[0049] Collaboration and Protection: When the fresh air dehumidifier is dehumidifying powerfully, the indoor dew point drops (as indicated by real-time sensor feedback). The central control station dynamically lowers the safe radiant water supply temperature to enhance radiant cooling capacity, thus forming a positive synergy.

[0050] If the wall dew point sensor detects a sudden increase in humidity near the radiant surface, it immediately sends a command via RS485 to close the thermoelectric valve in that area, triggering condensation protection.

[0051] Detailed control parameter table for cooling mode (for debugging purposes only) Parameter category Specific parameter name Recommended value in general scenario Adjustment range in special scenario Parameter description (debugging core points) Temperature trigger and dead zone Refrigeration start temperature deviation ≥0.5℃ 0.3℃-0.8℃ Too small deviation may cause frequent start-stop of equipment and increase energy consumption; too large deviation affects comfort; during debugging, the indoor area needs to be matched Temperature trigger and dead zone Refrigeration stop temperature deviation ≤0.1℃ 0℃-0.2℃ Avoid temperature overshoot to ensure that the room temperature is stable around the set value; during debugging, the response speed of the radiation system needs to be adjusted Condensation safety protection Anti-condensation safety margin 1.5℃-2℃ 2-2.5℃ in high humidity environment (RH≥70%) Core safety parameter, directly determines whether condensation occurs; in high humidity scenarios, the margin needs to be appropriately increased; during debugging, the dew point temperature needs to be measured and verified Condensation safety protection Wall dew point sensor alarm threshold ≥90%RH Can be reduced to 85%RH in high humidity areas Monitor the humidity near the radiation surface; immediately close the thermoelectric valve when the threshold is reached; during debugging, the sensor installation position needs to be calibrated (≤30cm from the radiation plate) Radiation system parameters Safe radiation water supply temperature range 16℃-20℃ Can be reduced to 15℃ when the room temperature is >30℃ (needs to meet the dew point + safety margin) Too low temperature is easy to condense, and too high temperature has poor refrigeration effect; during debugging, the mixing water center needs to be adjusted to match the accuracy Radiation system parameters Thermoelectric valve opening response delay 30s Can be extended to 60s when the system is just started Avoid valve misoperation caused by voltage fluctuations; during debugging, the valve response stability needs to be tested under different working conditions Fresh air dehumidifier parameters Dehumidification start humidity threshold ≥60%RH Can be reduced to 58%RH in humid areas Coordinate with the radiation system to control humidity; during debugging, avoid the superposition of humidity fluctuations between fresh air dehumidification and radiation refrigeration Fresh air dehumidifier parameters Dehumidification mode air volume 60-70% of the rated air volume Can be reduced to 50% in extreme high humidity Small air volume improves dehumidification efficiency; during debugging, the dehumidification effect and indoor ventilation demand need to be balanced Coordination control parameters Supply water temperature adjustment step size after dew point drop 0.5℃ / time Change to 0.3℃ / time when the temperature fluctuation is large Avoid sudden changes in supply water temperature that cause comfort to decrease; during debugging, the room temperature change rate needs to be monitored (recommended ≤0.3℃ / h) Mode 2: Heating Mode Objective: To raise the room temperature.

[0052] Triggering conditions: The indoor set temperature is greater than the actual indoor temperature, and the deviation is greater than the dead zone. The central control station determines the trigger based on data uploaded via RS485.

[0053] Control logic and action sequence: Radiant system main operation: Logic: No risk of condensation during heating (radiant surface temperature is higher than room temperature), more flexible water supply temperature setting range, and the central control station dynamically adjusts the target water supply temperature according to the indoor and outdoor temperature difference.

[0054] Action: The central control station sends a command via RS485 to open the thermoelectric valve of the water distributor, and regulates the mixing center or heat pump to send hot water (e.g., 35-45℃) into the radiant terminal for radiant heating.

[0055] Fresh air dehumidifier auxiliary and fresh air: Logic A (rapid heating): When the system starts up or in extremely cold weather (triggered by data uploaded by the outdoor temperature sensor), rapid heating is required.

[0056] Action A: The central control station commands the activation of the heating function of the fresh air dehumidifier (via heat pump or electric auxiliary heating) to heat the supply air and achieve a rapid response.

[0057] Logic B (Fresh Air and Humidity Management): Continuously instructs the fresh air dehumidifier to provide fresh air. If the outdoor air is cold and dry (based on data from the outdoor temperature and humidity sensor), its introduction may cause the indoor air to become too dry.

[0058] Action B: Activate the humidification function (if applicable) or reduce the exhaust energy recovery efficiency to maintain stable indoor humidity.

[0059] Mode 3: Ventilation Mode Objective: To maintain fresh indoor air (constant oxygen and cleanliness) and operate without the need for temperature adjustment.

[0060] Triggering conditions: Indoor CO2 concentration or TVOC concentration exceeds the standard (corresponding sensor uploads data via RS485), or triggered according to the schedule.

[0061] Control Logic and Actions: Radiation System: The central control station issues a command to close all thermoelectric valves of the water distributors. Fresh Air Dehumidifier: Operates at the set airflow rate, performing only filtration and energy recovery, without actively regulating temperature and humidity. In this mode, it functions as an advanced fresh air unit, with its operating status fed back to the central control station in real time. If the indoor air quality is detected by the five-in-one system to be ≥1200ppm, the fresh air valve will open, provided the dew point is below a safe level.

[0062] Air quality level Ventilation strategy Air volume control Optimum (CO2< 800 ppm) Minimum ventilation 0.5 times / hour Good (CO2 < 1200 ppm) Standard ventilation 1 time / hour Poor (CO2≥1200ppm) Enhanced ventilation 2 times / hour Polluted (PM2.5>75μg / m³) Filtering priority Mainly indoor circulation Mode 4: Dehumidification Mode Objective: To independently reduce indoor humidity with minimal impact on temperature.

[0063] Triggering conditions: Indoor humidity > set upper limit, and indoor temperature within a comfortable range (sensor data is uploaded to the central control station for determination, no cooling or heating is required).

[0064] Control logic and action sequence: Forced shutdown of the radiant system: Logic: To prevent the risk of condensation caused by the contact between the radiant cold surface and humid air during the initial stage of dehumidification, the central control station strictly enforces this safety constraint.

[0065] Action: Send a command via RS485 to close all manifold thermoelectric valves. This is a mandatory safety requirement.

[0066] Precise dehumidification of fresh air dehumidifiers: Logic: Adopting the strategy of "small air volume, low dew point, and reheat", the central control station adjusts the operating parameters of fresh air dehumidifiers to achieve precise dehumidification.

[0067] Actions: The system utilizes fresh air dehumidification to centrally process the air dew point, ensuring it remains below the safe dew point detected by the indoor dew point panel; the surface cooler cools the air to an extremely low dew point, maximizing moisture removal; the condensation heat recovery and reheat function (or electric auxiliary heating) is activated to heat the dry, cold air back to near room temperature before it is introduced into the room. This achieves isothermal dehumidification or micro-heating dehumidification, preventing a drop in indoor temperature, and the operating parameters are controlled in real-time via a closed-loop system.

[0068] Part Four: AI Intelligent Mode – Dynamic Optimization and Energy-Saving Overall Control The AI ​​mode is not an independent mode, but a self-learning intelligent decision-making layer that covers all basic modes. It is integrated into the LFH centralized control station and forms a data closed loop with various sensors and execution devices through the RS485 bus.

[0069] Core logic: Data-driven multi-objective dynamic optimization Data input (sensing layer): All data is uploaded to the AI ​​decision engine of the central control station via RS485 bus or related communication modules, including: Indoor: temperature, humidity, CO2, PM2.5, and set preferences for each room; Outdoors: Temperature, humidity, air quality, weather forecast (future temperature, humidity, sunshine, probability of precipitation); System status: equipment energy consumption, operating time, water temperature, refrigerant pressure, etc.; Cost signal: Real-time electricity price (used for peak-valley optimization).

[0070] AI Decision Engine (Brain Layer): Integrated into the central control station, it makes multi-dimensional decisions based on input data: Step 1: Demand identification and priority ranking. Highest priority (safety): Condensation risk warning. AI predicts humidity change trends and adjusts radiant water temperature in advance to avoid condensation risks.

[0071] Core Priority (Comfort): Based on the indoor-outdoor temperature difference and human comfort models (such as PMV-PPD), determine whether the current primary need is "cooling", "dehumidification", "heating" or "ventilation".

[0072] Step 2: Energy efficiency optimization and equipment scheduling. Outdoor air enthalpy analysis: When the outdoor air enthalpy is lower than the indoor air (cool and dry), the AI ​​prioritizes the ventilation mode and increases the fresh air volume, utilizing natural cold sources for free cooling and dehumidification; When the outdoor air temperature and humidity are suitable but the enthalpy value is slightly high, the AI ​​will instruct to start energy recovery on the basis of ventilation mode to reduce the energy loss caused by air exchange. When the outdoor air is hot and humid, the AI ​​minimizes the fresh air volume (only meeting health needs) and instructs the activation of the cooling + dehumidification mode.

[0073] Equipment combination strategy ("water" priority or "air" priority): AI will continuously calculate the energy ratio (COP / energy efficiency ratio) of 1kW of cooling / heating provided by the radiant system and fresh air system under the current operating conditions. Steady-state and mild operating conditions: Radiant systems are preferred, with top cooling as the first choice, followed by fan coil units, and then floor cooling. For heating, floor heating is preferred, followed by top heating, and then fan coil units (high efficiency, quiet operation, and comfort). Transient or extreme operating conditions: Coordinate the activation of the fresh air system for assistance and rapid compensation; Humidity control: The main system is always the fresh air dehumidifier, with the radiant system working in conjunction with changes in its dew point.

[0074] Step 3: Predictive Control and Pre-regulation. Based on weather forecasts, slightly lower the room temperature (or raise it in advance for heating mode) before the electricity price drops or before outdoor temperatures decrease, storing cold / heat in the building structure. Reduce equipment operation during peak hours, utilize building inertia to maintain comfort, achieve peak shifting and valley filling, and save on electricity bills.

[0075] Output and Execution (Execution Layer): The AI ​​outputs specific mode combination instructions and set parameters (such as target water temperature, target air supply temperature and humidity, and air volume level) to the LFH centralized control master station; The LFH main controller distributes specific instructions to the execution terminals such as the fresh air dehumidifier, water distributor, and mixing center via the RS485 bus, while receiving equipment operation feedback to form a closed-loop control.

[0076] The essence of AI energy-saving logic "Free cooling / heating" maximizes: making full use of suitable outdoor air, reducing compressor start-up time, and lowering energy consumption.

[0077] Prioritize high-efficiency terminals: Allow radiant terminals to bear the basic load as much as possible, and let the fresh air system perform precision compensation and humidity control, so as to give full play to their respective energy efficiency advantages.

[0078] Predictive and inertial utilization: Treating the building itself as an energy storage body and implementing forward-looking and gradual control to avoid frequent start-ups and shutdowns of equipment and sudden changes in high power is the biggest source of energy conservation.

[0079] On-demand supply: Based on the actual occupancy status of a room (via sensors or smart home linkage), it enables refined control by area and time period, avoiding indiscriminate operation of the entire residence.

[0080] Do you need me to provide a detailed control parameter table for a certain basic mode (such as dead zone setting, safety margin range, etc.) to facilitate your system debugging? Logic: Maintain only the necessary fresh air volume to ensure indoor air quality while minimizing energy loss.

[0081] Action: The central control station sends a command via RS485 to control the fresh air dehumidifier to operate at the minimum rated air volume, only turning on the filtration and energy recovery functions, and turning off the active temperature and humidity adjustment module.

[0082] This invention relates to an intelligent five-constant air HVAC integrated control system for the HVAC industry, which can integrate commonly used peripherals such as fresh air units, dew point panels, mixing panels, and heat pump units. It is commonly used in high-end residential buildings, commercial spaces, and green building applications.

[0083] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent five-constant air conditioning, ventilation, and air conditioning integrated control system, characterized in that: It includes a central control unit, a central control display screen connected to the central control unit, and several sub-control units. The central control unit controls each sub-control unit individually through the central control display screen. Each sub-control unit includes a main control board, a Zhilian 4G-OTA, a dew point panel, a mixing panel, a smart hub, a five-in-one sensor, a heat pump host, a fresh air host, and a Zhilian WIFI-DTU or Zhilian 4G-DTU connected to the main control board. The main control board integrates a Modbus communication module, a peripheral data integration module, a central control core coordination module, a data storage module, a fault diagnosis module, and a 4G network diagnostic module. The Modbus communication module includes Modbus Master 1, Modbus Slave 1, Modbus Master 2, and Modbus Slave 2; The dew point panel, mixing panel, smart hub, and five-in-one sensor are connected to Modbus host 1, the main control display screen is connected to Modbus slave 1, the fresh air host and heat pump host are connected to Modbus host 2, and the SmartChain WIFI-DTU or SmartChain 4G-DTU is connected to Modbus slave 2.

2. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 1, characterized in that: The Modbus communication module is used to implement the functions of each Modbus master, such as reading data from peripherals and writing commands to peripherals; and to implement the functions of each Modbus slave, such as receiving commands and setting parameters from the host computer.

3. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 2, characterized in that: The peripheral data integration module, based on the Modbus communication module, reads the parameters of all peripherals according to the Modbus register address table of the peripherals, and integrates them into memory in a suitable manner for easy access by the upper application layer.

4. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 1, characterized in that: The centralized control core coordination module is the core of the entire control section. It is used to receive power on / off commands, mode switching commands, and temperature setting commands issued by the host computer main control panel. Combined with the peripheral data integration module, it controls the peripherals to achieve specific functions according to the set control logic.

5. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 1, characterized in that: The data storage module is responsible for recording the working data of the control section, including the set temperature, device address, and working mode.

6. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 4, characterized in that: The fault diagnosis module is used to monitor and diagnose the communication status and working status of peripheral devices in order to handle fault situations in a timely manner. The fault diagnosis module includes the implementation of fault detection algorithms, state machines or other fault diagnosis mechanisms.

7. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 1, characterized in that: The 4G network diagnostic module automatically identifies whether the peripheral 4G-DTU mode is connected. If the hardware is connected to the 4G-DTU module, it can upload the current operating status to the cloud platform or receive control commands from the cloud platform.

8. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 1, characterized in that: The dew point panel is divided into dew point panel 17 and dew point panel ST850.

9. The intelligent five-constant air conditioning and ventilation integrated control system according to claim 1, characterized in that: The central control display screen is a 7-inch screen used to control the individual controls in all rooms.

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