Two-speed control air conditioning ventilation valve system

Abstract

The present invention discloses a dual-speed control type air conditioning ventilation valve system, which relates to the field of air conditioning ventilation control technology. The system comprises: a dual-mode execution module, an environmental perception module, a decision control module, a host collaborative interface module, and a communication and drive module. The present invention realizes efficient control of the ventilation valve system under different working conditions through a unique dual-mode execution module and a hierarchical decision strategy. In the high-speed coarse adjustment mode, it can quickly respond to the sudden change in ambient temperature when the air conditioner is turned on and a large amount of fresh air is introduced, while the low-speed fine adjustment mode controls the temperature fluctuation to a steady state through a high-precision drive mechanism and intelligent control, greatly improving the comfort of the indoor environment. At the same time, the control strategy of the adaptive working condition can automatically switch the working mode according to the real-time monitored environmental parameters, so that the control strategy always perfectly matches the current heat load demand, avoiding the problem of slow response or control inaccuracy caused by a single control mode.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning and ventilation control, in particular to a dual-speed regulating air conditioning and ventilation valve system. Background Art

[0002] As the core equipment for maintaining indoor comfort and air quality, the performance of the air conditioning and ventilation system directly affects building energy consumption, personnel health and equipment operating efficiency. As people's requirements for indoor environmental quality continue to increase, traditional air conditioning and ventilation systems face higher technical challenges, especially in places with dense populations and variable heat loads such as commercial complexes and large office buildings. Ventilation valves are key components for air volume regulation in air conditioning systems. The timeliness, accuracy and energy efficiency of their regulation have become important indicators for measuring the overall performance of air conditioning systems. How to achieve efficient and energy-saving operation of ventilation valve systems while meeting diverse usage needs has become a technical problem that needs to be urgently solved in the industry.

[0003] The air conditioning ventilation valve systems currently on the market generally adopt single-speed control or simple graded control mode. When responding to sudden changes in ambient temperature or drastic fluctuations in the load of the air-conditioning host, the single-speed valve is unable to respond quickly due to its limited adjustment speed, resulting in large deviations in indoor temperature and affecting people's comfort; and the graded control mode lacks dynamic perception and adaptive adjustment capabilities of environmental parameters, making it difficult to maintain high-precision temperature control during steady-state operation, and is prone to over-adjustment or under-adjustment, resulting in energy waste. In addition, the existing ventilation valve system has poor coordination with the air-conditioning host, and cannot adjust the air volume in real time according to the host's operating status, resulting in an imbalance in the matching between the air side and the cold and heat source side, further reducing the overall operating efficiency of the system.

[0004] To sum up, the existing air-conditioning and ventilation valve systems have obvious deficiencies in control accuracy and system coordination, and are difficult to meet the needs of modern buildings for efficient and intelligent environmental control systems. Therefore, there is an urgent need to develop a new air-conditioning and ventilation valve system with precise control and intelligent coordination to solve the defects in the existing technology. Summary of the Invention

[0005] The purpose of the present invention is to remedy the shortcomings of the existing technology and provide a dual-speed control air conditioning ventilation valve system, which can achieve efficient control of the ventilation valve system under different working conditions through a unique dual-mode execution module and hierarchical decision-making strategy. In the high-speed coarse adjustment mode, it can quickly respond to sudden changes in ambient temperature when the air conditioner is turned on and a large amount of fresh air is introduced, while the low-speed fine adjustment mode controls temperature fluctuations to a steady state through a high-precision drive mechanism and intelligent control, greatly improving the comfort of the indoor environment. At the same time, the control strategy that adapts to the working conditions can automatically switch the working mode according to the real-time monitored environmental parameters, so that the control strategy always perfectly matches the current heat load demand, effectively avoiding the problems of slow response or control inaccuracy caused by a single control mode.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A dual-speed control type air conditioning ventilation valve system, the system comprises: a dual-mode execution module, an environment perception module, a decision control module, a host coordination interface module, and a communication and drive module;

[0008] The dual-mode execution module includes a high-speed driving unit and a low-speed driving unit, which are used to physically realize two working modes: coarse high-speed adjustment and fine low-speed adjustment;

[0009] The environmental perception module integrates a temperature sensor array and a wind pressure sensor to collect dynamic environmental parameters in real time, continuously monitor the indoor and outdoor temperature difference, the deviation between the target temperature and the actual temperature, and the deviation change rate, providing comprehensive environmental data support for system decision-making;

[0010] The decision control module uses a hierarchical decision strategy to activate the working mode of the dual-mode execution module, and sends the decision instruction to the communication and drive module. At the same time, it synchronizes the current working mode information to the host collaborative interface module to provide a basis for the secondary adjustment of the host collaborative interface module.

[0011] The host collaborative interface module is configured as a linkage controller between the cold and hot source sides and the air valve, and performs secondary adjustment based on the output results of the decision control module;

[0012] The communication and driving module receives the decision instruction of the decision control module and the reinforcement signal of the host cooperative interface module, outputs the driving signal to the dual-mode execution module, and controls the operation of the dual-mode execution module.

[0013] Furthermore, the dual-mode execution module includes a high-speed driving unit and a low-speed driving unit;

[0014] The high-speed drive unit includes a coarse high-speed mode for correcting range temperature differences and sudden changes in air volume, and responding and adjusting to the target state in scenarios where the air conditioner is started and a large amount of fresh air is introduced;

[0015] The low-speed drive unit includes a fine-tuning low-speed mode for steady-state temperature fluctuations to maintain temperature control of the indoor environment.

[0016] Furthermore, the indoor and outdoor temperature difference in the environmental sensing module is calculated by collecting data from the indoor temperature sensor and the outdoor temperature sensor, that is, ,in, Indicates the real-time indoor temperature collected by the indoor temperature sensor. Indicates the real-time outdoor temperature collected by the outdoor temperature sensor;

[0017] The target temperature and the actual temperature deviation value are determined by the target temperature set by the system. The actual indoor temperature Calculated, that is ,in, The target temperature set by the user in the air conditioning control system, The real-time indoor temperature collected by the indoor temperature sensor;

[0018] The deviation change rate is set by setting the data collection interval to , in The deviation between the target temperature and the actual temperature collected at the sampling moment is , No. The deviation between the target temperature and the actual temperature collected at the sampling moment is , then the deviation change rate is: ,in, Indicates the The deviation between the target temperature and the actual temperature at each sampling moment, Indicates the The deviation between the target temperature and the actual temperature at each sampling moment, is the data sampling interval, and the data sampling frequency ,Right now .

[0019] Furthermore, the hierarchical decision-making strategy in the decision control module is specifically as follows:

[0020] First level environmental decision: When the and When the high-speed mode of the dual-mode execution module is triggered, the high-speed mode instruction is output, where is the deviation between the target temperature and the actual temperature, To adjust the ventilation valve to cope with the drastic change of ambient temperature, the deviation rate is used;

[0021] Secondary environmental decision: When the and When the temperature is low, it outputs low-speed mode instructions to make fine adjustments to maintain a stable indoor temperature.

[0022] Furthermore, the decision control module converts the decision result into a decision instruction and sends it to the communication and driving module, and synchronizes the current working mode information to the host collaborative interface module, and the information includes:

[0023] Working mode identifier: High speed mode is marked as , low speed mode is marked as ;

[0024] Trigger: The trigger condition on which the current hierarchical decision-making strategy is based;

[0025] Decision timestamp: recorded as ;

[0026] And start the timer after mode switching ,exist During this period, mode switching is prohibited from being triggered again, and the following logic is executed during this period:

[0027] When the environmental parameters meet the trigger conditions of another mode, the system will accumulate the number of samples that meet the conditions. ,when and , mode switching is allowed;

[0028] when , the system maintains the current working mode unchanged.

[0029] Furthermore, the host cooperative interface module obtains the operating frequency of the air conditioner host through the industrial bus , and calculate its rate of change , ,in, is the host frequency at the current sampling moment, is the host frequency at the last sampling moment, It is the sampling interval to grasp the operating status of the air conditioner host in real time.

[0030] Furthermore, the host cooperative interface module receives the high-speed mode instruction from the decision control module, and the host frequency meets When the valve is opened, a strengthening instruction is sent to the communication and drive module to increase the valve opening rate to seconds, while generating high-speed enhanced signals , recorded as: , strengthen the execution of high-speed mode to match the needs when the host load increases;

[0031] When receiving the low speed mode command and the host frequency , duration When the valve is opened, a low-speed fine-tuning command is sent to reduce the valve opening rate to seconds and generate a low-speed fine-tuning signal , recorded as: ,in, The rated frequency of the host enables efficient coordination between the ventilation side and the host's cold and heat source side.

[0032] Furthermore, the communication and driving module receives the decision instruction sent by the decision control module and the reinforcement signal of the host collaborative interface module, which includes: the working mode identifier, the reinforcement signal, and the timestamp information;

[0033] A dual-channel redundant circuit is used, including a main channel and a backup channel, to ensure no signal delay in high-speed mode and no signal distortion in low-speed mode. The main channel and the backup channel are used for driving signal transmission of the dual-mode execution module, wherein:

[0034] The main channel is responsible for transmitting the driving signal to the dual-mode execution module, controlling the high-speed drive unit and the low-speed drive unit, and quickly adjusting the valve opening;

[0035] The backup channel is automatically enabled when the main channel fails, allowing the drive signal to continue to be transmitted and maintain the basic regulation function of the system.

[0036] Compared with the existing technology, the dual-speed control type air conditioning ventilation valve system has the following beneficial effects:

[0037] 1. This invention achieves efficient control of the ventilation valve system under different operating conditions through a unique dual-mode execution module and hierarchical decision-making strategy. In high-speed coarse-adjustment mode, it can quickly respond to sudden changes in ambient temperature when the air conditioner is turned on and a large amount of fresh air is introduced. In low-speed fine-adjustment mode, the high-precision drive mechanism and intelligent control are used to control temperature fluctuations to a steady state, greatly improving the comfort of the indoor environment. At the same time, the adaptive control strategy can automatically switch operating modes based on real-time monitored environmental parameters, ensuring that the control strategy always perfectly matches the current heat load demand, effectively avoiding the problems of slow response or control inaccuracy caused by a single control mode.

[0038] 2. The present invention realizes the deep linkage between the ventilation valve system and the air-conditioning host. The system can accurately sense the changes in the operating frequency of the air-conditioning host, and adjust the working mode and air volume of the ventilation valve in real time according to the host load conditions. When the host frequency increases and the load increases, the ventilation valve high-speed mode quickly follows up and promptly increases the fresh air or return air mixing ratio to ensure efficient coordination between the air side and the cold and hot source side of the host. When the host frequency decreases and approaches the set point, the low-speed mode performs refined flow maintenance to avoid over-adjustment or under-adjustment due to valve response lag, reduce energy consumption, and extend the service life of the air-conditioning equipment.

[0039] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0041] Figure 1 This is an operational flow chart of a dual-speed control air conditioning ventilation valve system;

[0042] Figure 2 This is a schematic diagram of the system composition of a dual-speed control air conditioning ventilation valve system. DETAILED DESCRIPTION

[0043] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0044] Example 1

[0045] This embodiment discloses a working principle of a dual-speed control air conditioning ventilation valve system. Figure 1 As shown in the figure, through the collaborative work of the dual-modal execution module, environmental perception module, decision-making control module, host collaborative interface module and communication and drive module, high-speed coarse adjustment and low-speed fine adjustment control of the air-conditioning ventilation valve are realized. At the same time, the overall operation efficiency of the system is improved through the linkage control with the air-conditioning host. It is suitable for scenes with dense population and variable heat load, such as commercial complexes and office buildings.

[0046] In this embodiment, in a large conference room scenario in a modern commercial complex, the dual-speed control air conditioning ventilation valve system of the present invention is used to maintain a stable and comfortable indoor temperature. The environmental parameters are collected in real time through the environmental perception module. The internally integrated temperature sensor array includes multiple high-precision temperature sensors, which are evenly distributed indoors and outdoors of the conference room to ensure the comprehensiveness and representativeness of the collected data. The outdoor temperature sensor collects the outdoor ambient temperature in real time. The indoor temperature sensor collects the temperature data of each area of ​​the conference room in real time and performs fusion processing to obtain the real-time indoor temperature ,Based on the collected temperature data, the environment perception module first calculates the indoor and outdoor temperature difference , the calculation formula is: The temperature difference reflects the heat exchange trend between indoor and outdoor, providing an important basis for the subsequent decision-making of the system. At the same time, the target temperature set by the system The user sets the target temperature in the air conditioning control system according to the comfort requirement. The environmental sensing module compares the target temperature with the real-time indoor temperature and calculates the deviation between the target temperature and the actual temperature. , and its calculation formula is: ,in, It directly reflects the difference between the current indoor temperature and the user's expected temperature. In order to further analyze the trend of temperature deviation, the environmental perception module calculates the deviation change rate. , the module runs at fixed time intervals The temperature deviation value is sampled. In this embodiment, for example, The deviation value collected at the sampling moment is , No. The deviation value of each sampling moment is , then the deviation change rate is: , the data sampling frequency is not less than 1Hz, that is, the sampling interval No more than 1 minute to ensure real-time monitoring of temperature changes. During the use of the conference room, when participants enter one after another, the number of people in the room increases, and the heat dissipation of human bodies causes the indoor temperature to rise. The environmental sensing module monitors the indoor temperature in real time. Gradually increase the target temperature deviation value Gradually increases, while the rate of change of deviation It also shows an upward trend. These parameters collected and calculated in real time are transmitted to the decision control module in real time through the data bus, providing accurate environmental data support for its decision-making.

[0047] The decision control module is responsible for receiving the data transmitted by the environmental perception module and generating corresponding control instructions according to the preset hierarchical decision strategy. The module adopts a two-level environmental decision mechanism to achieve precise control of the working mode of the dual-mode execution module. Among them, the first-level environmental decision is used to determine whether to start the high-speed coarse adjustment mode. When the target temperature deviation value received by the decision control module is The absolute value of , and the absolute value of the deviation change rate When , it indicates that the indoor temperature deviates greatly from the target temperature and changes rapidly. At this time, the high-speed mode of the dual-mode execution module is triggered to quickly adjust the ventilation valve to cope with the drastic change in ambient temperature. With the operation of the high-speed mode, the indoor temperature gradually approaches the target temperature. and When the temperature drops below 0.05, the secondary environmental decision-making mechanism starts, automatically switches to the low-speed fine-tuning mode, and performs fine-tuning to maintain the stability of the indoor temperature. During the mode switching process, the decision control module starts the anti-oscillation mechanism to avoid frequent mode switching caused by slight fluctuations in environmental parameters. Specifically, after each mode switch, the timer is started. ,exist During this period, when the environmental parameters meet the trigger conditions of another mode, the system will accumulate the number of sampling times that meet the conditions. , only when and Only when the execution mode switch is allowed, if , the system maintains the current working mode unchanged. At the same time, when the indoor temperature rises rapidly due to the increase in the number of people, the environmental perception module transmits and When these two parameters meet the triggering conditions of the first-level environmental decision, the decision control module generates a high-speed mode instruction, which contains the working mode identifier. , trigger conditions, and precise decision timestamps On the one hand, this information is sent to the dual-mode execution module through the communication and drive module, and on the other hand, it is synchronized to the host collaborative interface module to provide a basis for the secondary adjustment of the host collaborative interface module. With the operation of the high-speed mode, the ventilation valve is adjusted quickly, and the rising trend of the indoor temperature is curbed and begins to decline. When the temperature deviation and the rate of change are reduced to meet the secondary environmental decision conditions, the decision control module generates a low-speed mode instruction , and start the anti-oscillation timer to ensure that the system runs stably in low-speed fine-tuning mode and maintain the indoor temperature near the target value.

[0048] The dual-mode execution module realizes precise control of the opening of the ventilation valve through the coordinated work of the high-speed drive unit and the low-speed drive unit. Among them, the high-speed drive unit is responsible for realizing the coarse adjustment of the high-speed mode, and adopts a high-speed stepping motor to realize the high-speed mode command when receiving the high-speed mode command of the decision control module. After that, the high-speed drive unit responds quickly to drive the valve action, thereby quickly adjusting the air volume to cope with the drastic changes in indoor temperature. In high-speed mode, the ventilation volume is changed quickly to make the indoor temperature quickly approach the target temperature; the low-speed drive unit is used to achieve fine-tuning of the low-speed mode, and the valve opening is finely adjusted through the reduction gear group drive component. When the system switches to low-speed mode, the low-speed drive unit drives the valve at a lower speed to reduce the opening change rate, thereby achieving fine control of the air volume, maintaining the indoor temperature fluctuation within a smaller range, and controlling the valve opening during the mode switching process to avoid air volume and pressure fluctuations caused by mode switching, thereby improving the stability of system operation. When the decision control module sends a high-speed mode instruction After reaching the communication and drive module, the communication and drive module sends a drive signal to the high-speed drive unit of the dual-mode execution module through the main channel. After receiving the signal, the high-speed drive unit quickly drives the valve to increase the opening at a higher speed, increase the ventilation volume, and allow outdoor cold air to quickly enter the conference room, lowering the indoor temperature. As the indoor temperature gradually approaches the target temperature, the decision control module switches to low-speed mode, and the communication and drive module switches the drive signal to the low-speed drive unit. The low-speed drive unit slowly adjusts the valve opening through a high-precision drive mechanism, accurately controls the ventilation volume, and maintains the stability of the indoor temperature.

[0049] The host collaborative interface module is responsible for realizing the linkage control of the air side and the cold and hot source side to improve the overall operation efficiency of the system. This module collects the operating frequency of the air conditioner host through the industrial bus , and calculate its rate of change , the calculation formula is: ,in, is the host frequency at the current sampling moment, is the host frequency at the last sampling moment, The host collaborative interface module can accurately grasp the operating status of the air-conditioning host by monitoring the host frequency and its change rate in real time. Based on the working mode information output by the decision control module, the host collaborative interface module executes the corresponding secondary adjustment logic: when receiving the high-speed mode instruction from the decision control module , and the host frequency change rate When the load of the air conditioner host increases, more air volume is needed. At this time, the host collaborative interface module sends an enhancement command to the communication and drive module to increase the valve opening change rate to a higher level and generate a high-speed enhancement signal. , to strengthen the execution of high-speed mode and better match the needs when the host load increases; when receiving the low-speed mode command , and the host frequency and duration When the load on the host is low, a low-speed fine-tuning command is sent to reduce the valve opening rate to a lower level and generate a low-speed fine-tuning signal. , to achieve efficient coordination between the air side and the host cold and heat source side. When the air conditioner host increases its frequency due to changes in indoor temperature, the host coordination interface module monitors the host frequency in real time. Rise, calculate its rate of change At this time, the decision control module is in high-speed mode After the host cooperative interface module detects this situation, it sends a strengthening instruction to the communication and drive module to further increase the valve opening change rate, so that the ventilation volume increases rapidly, matching the high load operation of the host, ensuring that the indoor temperature can drop quickly. When the indoor heat load decreases, the air conditioner host frequency Decline and maintain The following exceeds 5 minutes, at this time, the decision control module is in low speed mode The host collaborative interface module sends a fine-tuning low-speed instruction to reduce the valve opening change rate, reduce the ventilation volume, avoid low indoor temperature due to excessive air volume, achieve efficient coordination between the wind side and the host, and reduce energy consumption.

[0050] The communication and drive module is responsible for realizing signal transmission and drive control between modules to ensure the stable operation of the system. The module adopts a dual-channel redundant circuit design, including a main channel and a backup channel. The main channel is responsible for transmitting the drive signal to the dual-mode execution module under normal circumstances, controlling the operation of the high-speed drive unit and the low-speed drive unit, and realizing the rapid adjustment of the valve opening. The backup channel is automatically enabled when the main channel fails to ensure the continuous transmission of the drive signal and maintain the basic adjustment function of the system. The communication and drive module receives the decision instructions sent by the decision control module, including the working mode identifier ( or ), Strengthen the signal ( or ) and timestamp information, etc., after being processed by the optoelectronic isolation circuit, the signal is converted into a pulse signal suitable for driving the dual-mode execution module. In high-speed mode, the output drive signal is ensured to have no delay, so that the high-speed drive unit can respond quickly. In low-speed mode, the frequency and duty cycle of the drive signal are precisely controlled to ensure that the signal of the low-speed drive unit is free of distortion, and fine adjustment of the valve opening is achieved. In addition, the communication and drive module has a built-in signal monitoring circuit to monitor the voltage amplitude, frequency stability and waveform integrity of the drive signal in real time. When an abnormal situation is detected, such as excessive frequency offset or severe waveform distortion, the backup channel can be quickly triggered and the fault information can be reported to the decision control module to improve the reliability and maintainability of the system. When the decision control module generates a high-speed mode instruction After being sent to the communication and drive module, the main channel of the communication and drive module responds immediately and transmits the drive signal to the high-speed drive unit of the dual-mode execution module to ensure that the high-speed drive unit can act quickly and realize rapid adjustment of the valve opening. At the same time, the signal monitoring circuit monitors the quality of the drive signal in real time to ensure that there is no signal delay in high-speed mode. If the main channel fails during operation, such as an abnormality in the drive chip causing interruption of signal transmission, the signal monitoring circuit of the communication and drive module quickly detects this abnormality and triggers the backup channel. The backup channel transmits the drive signal to the dual-mode execution module to maintain the basic adjustment function in low-speed mode, ensuring that the system will not fail completely due to a failure in the main channel, and reporting the fault information to the decision control module for maintenance.

[0051] This embodiment describes in detail the specific operation process of the dual-speed control air conditioning ventilation valve system in a commercial conference room scenario. The real-time collection and calculation of indoor and outdoor temperatures, target temperature deviation and deviation change rate by the environmental perception module provide accurate environmental data for the decision-making control module. The decision-making control module accurately controls the working mode switching of the dual-mode execution module based on the hierarchical decision-making strategy. The dual-mode execution module realizes rapid coarse adjustment and fine adjustment of the ventilation valve through the coordinated work of the high-speed drive unit and the low-speed drive unit. The host collaborative interface module further improves the system's collaborative efficiency through real-time linkage with the air conditioning host. The dual-channel redundant design of the communication and drive module ensures the reliability of signal transmission. The system not only improves the response speed and control accuracy of the ventilation valve system, but also improves the overall operation efficiency of the system through deep linkage with the air conditioning host.

[0052] Example 2

[0053] like Figure 1 As shown, this embodiment provides a process for dual-speed regulation of an air conditioning and ventilation valve through a dual-speed regulation air conditioning and ventilation valve system. The specific steps of the process are as follows:

[0054] (1) System initialization and parameter setting:

[0055] Start the dual-speed control air conditioning ventilation valve system and complete the self-test of each module to ensure the normal operation of the dual-mode execution module, environmental perception module and other modules;

[0056] Set the target temperature in the air conditioning control system and confirm that the industrial bus connection is normal so that the host collaborative interface module can obtain the operating frequency of the air conditioning host.

[0057] (2) Real-time collection of environmental parameters:

[0058] The environmental perception module continuously collects dynamic environmental parameters such as indoor temperature and outdoor temperature through the integrated temperature sensor array and wind pressure sensor;

[0059] Based on the collected temperature data, calculate the indoor and outdoor temperature difference, the target temperature and the actual temperature deviation;

[0060] The temperature deviation value is sampled at fixed time intervals to analyze the deviation trend between the target temperature and the actual temperature.

[0061] (3) Decision control module hierarchical decision-making:

[0062] First-level environmental decision-making: and When , the high-speed mode of the dual-mode execution module is triggered and the high-speed mode instruction is output;

[0063] Secondary environmental decision-making: and When the low speed mode is set, the low speed mode command is output for fine adjustment.

[0064] (4) Mode switching anti-oscillation processing:

[0065] A timer is started after each mode switch, and mode switching is prohibited from being triggered again within the specified time.

[0066] (5) Decision-making instructions and information synchronization:

[0067] The decision control module converts the decision result into a decision instruction and sends it to the communication and drive module. At the same time, it synchronizes the current working mode information to the host collaborative interface module, including the working mode identifier, trigger condition, and decision timestamp;

[0068] Obtain the operating frequency of the air conditioner host through the industrial bus and calculate its change rate;

[0069] When a high-speed mode command is received and the host frequency change rate meets the conditions, a high-speed enhancement signal is sent to the communication and drive module to enhance the execution of the high-speed mode;

[0070] When a low-speed mode command is received and the host frequency and duration meet the conditions, a low-speed fine-tuning signal is sent to achieve efficient coordination between the air side and the host cold and hot source side.

[0071] (6) Communication and drive module signal processing:

[0072] Receive the decision instruction from the decision control module and the reinforcement signal from the host collaborative interface module, including the working mode identifier, the reinforcement signal, and the timestamp information;

[0073] A dual-channel redundant circuit is adopted. The main channel is responsible for transmitting the driving signal to the dual-mode execution module under normal circumstances, and the backup channel is automatically enabled when the main channel fails.

[0074] (7) Dual-mode execution module action:

[0075] High-speed drive unit: In high-speed mode, it quickly drives the valve plate to move, corrects the temperature difference and air volume mutation within the range, and makes the ventilation valve respond and adjust to the target state;

[0076] Low-speed drive unit: In low-speed mode, it drives the valve plate precisely to stabilize temperature fluctuations and maintain temperature control of the indoor environment.

[0077] (8) System operation status monitoring and feedback:

[0078] Each module continuously monitors the system's operating status. The communication and drive modules have built-in signal monitoring circuits to detect the integrity of the drive signal in real time. In the event of an abnormality, the backup channel is triggered and fault information is reported.

[0079] The host coordination interface module feeds back the secondary adjustment status and related parameters to the decision control module to ensure real-time coordination between the dual-mode execution module and the host operation status.

[0080] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A dual-speed control air conditioning ventilation valve system, characterized in that: The system consists of: dual-mode execution module, environmental perception module, decision-making control module, host collaborative interface module, communication and drive module; The dual-mode execution module includes a high-speed driving unit and a low-speed driving unit, which are used to physically realize two working modes: coarse high-speed adjustment and fine low-speed adjustment; The environmental perception module integrates a temperature sensor array and a wind pressure sensor to collect dynamic environmental parameters in real time, continuously monitor the indoor and outdoor temperature difference, the deviation between the target temperature and the actual temperature, and the deviation change rate, providing comprehensive environmental data support for system decision-making; The decision control module uses a hierarchical decision strategy to activate the working mode of the dual-mode execution module, and sends the decision instruction to the communication and drive module. At the same time, it synchronizes the current working mode information to the host collaborative interface module to provide a basis for the secondary adjustment of the host collaborative interface module. The host collaborative interface module is configured as a linkage controller between the cold and hot source sides and the air valve, and performs secondary adjustment based on the output results of the decision control module; The communication and driving module receives the decision instruction of the decision control module and the strengthening signal of the host cooperative interface module, outputs the driving signal to the dual-mode execution module, and controls the operation of the dual-mode execution module; The hierarchical decision-making strategy in the decision control module is specifically: First level environmental decision: When the and When the high-speed mode of the dual-mode execution module is triggered, the high-speed mode instruction is output, where is the deviation between the target temperature and the actual temperature, To adjust the ventilation valve to cope with the drastic change of ambient temperature, the deviation rate is adjusted; Secondary environmental decision: When the and When the temperature is low, it outputs low-speed mode instructions to make fine adjustments to maintain a stable indoor temperature. The host cooperative interface module obtains the operating frequency of the air conditioner host through the industrial bus , and calculate its rate of change , ,in, is the host frequency at the current sampling moment, is the host frequency at the last sampling moment, The sampling interval is used to grasp the operating status of the air conditioner host in real time; The host cooperative interface module receives the high-speed mode instruction from the decision control module, and the host frequency meets the When the valve is opened, a strengthening instruction is sent to the communication and drive module to increase the valve opening rate to seconds, while generating high-speed enhanced signals , strengthen the execution of high-speed mode to match the needs when the host load increases; When receiving the low speed mode command and the host frequency , duration When the valve is opened, a low-speed fine-tuning command is sent to reduce the valve opening rate to seconds and generate a low-speed fine-tuning signal ,in, The rated frequency of the host makes the ventilation side and the host cold and heat source side work together efficiently.

2. The dual-speed control air conditioning ventilation valve system according to claim 1, characterized in that: The high-speed drive unit includes a coarse high-speed mode for correcting range temperature differences and sudden changes in air volume, and responding and adjusting to the target state in scenarios where the air conditioner is started and a large amount of fresh air is introduced; The low-speed drive unit includes a fine-tuning low-speed mode for steady-state temperature fluctuations to maintain temperature control of the indoor environment.

3. The dual-speed control air conditioning ventilation valve system according to claim 1, characterized in that: The indoor and outdoor temperature difference in the environmental sensing module is calculated by collecting data from the indoor temperature sensor and the outdoor temperature sensor, that is, ,in, Indicates the real-time indoor temperature collected by the indoor temperature sensor. Indicates the real-time outdoor temperature collected by the outdoor temperature sensor; The target temperature and the actual temperature deviation value are determined by the target temperature set by the system. The actual indoor temperature Calculated, that is ,in, The target temperature set by the user in the air conditioning control system, The real-time indoor temperature collected by the indoor temperature sensor; The deviation change rate is set by setting the data collection interval to , in The deviation between the target temperature and the actual temperature collected at the sampling moment is , No. The deviation between the target temperature and the actual temperature collected at the sampling moment is , then the deviation change rate is: ,in, Indicates the The deviation between the target temperature and the actual temperature at each sampling moment, Indicates the The deviation between the target temperature and the actual temperature at each sampling moment, is the data sampling interval, and the data sampling frequency ,Right now .

4. The dual-speed control air conditioning ventilation valve system according to claim 1, characterized in that: The decision control module converts the decision result into a decision instruction and sends it to the communication and drive module, and synchronizes the current working mode information to the host collaborative interface module. The information includes: Working mode identifier: High speed mode is marked as , low speed mode is marked as ; Trigger: The trigger condition on which the current hierarchical decision-making strategy is based; Decision timestamp: recorded as ; And start the timer after mode switching ,exist During this period, mode switching is prohibited from being triggered again, and the following logic is executed during this period: When the environmental parameters meet the trigger conditions of another mode, the system will accumulate the number of samples that meet the conditions. ,when and , mode switching is allowed; when , the system maintains the current working mode unchanged.

5. The dual-speed control air conditioning ventilation valve system according to claim 1, characterized in that: The communication and driving module receives the decision instruction sent by the decision control module and the enhanced signal of the host collaborative interface module, which includes: working mode identifier, enhanced signal, and timestamp information; A dual-channel redundant circuit is used, including a main channel and a backup channel, to ensure no signal delay in high-speed mode and no signal distortion in low-speed mode. The main channel and the backup channel are used for driving signal transmission of the dual-mode execution module, wherein: The main channel is responsible for transmitting the driving signal to the dual-mode execution module, controlling the high-speed drive unit and the low-speed drive unit, and quickly adjusting the valve opening; The backup channel is automatically enabled when the main channel fails, allowing the drive signal to continue to be transmitted and maintain the basic regulation function of the system.

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