Control method, device and system for continuous speed regulation of fan of temperature controller

Abstract

The invention provides a fan continuous speed regulation control method, device and system for a temperature controller, and relates to the technical field of fan speed regulation, and the method comprises the steps: collecting the temperature data of the current environment in real time, obtaining the target temperature data, determining the temperature difference data based on the target temperature data and the temperature data of the current environment, and determining the temperature difference based on the temperature difference data. The method comprises the steps of determining a corresponding preset temperature difference interval, determining a corresponding target speed regulation parameter on the basis of the preset temperature difference interval, calculating a target conduction angle on the basis of the target speed regulation parameter, generating a speed regulation instruction on the basis of the target conduction angle, and controlling a fan to carry out regulation on the basis of the speed regulation instruction. The technical problem that the temperature control precision is limited due to the fact that the rotating speed of a fan in the prior art can only be divided into three fixed gears and cannot be continuously changed is solved, and the effect of improving the fan adjusting precision of the temperature controller is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fan speed regulation, in particular to a control method, device and system for continuous speed regulation of a fan for a temperature controller. BACKGROUND

[0002] At present, fan coil temperature control systems are widely used in the field of building environment control as the main means of indoor temperature regulation. Such systems balance indoor cooling and heating loads by adjusting the air supply of the fan, and are one of the key devices for achieving precise room temperature control, and are widely used in residential, office and commercial premises.

[0003] Existing fan coil temperature controllers usually use a three-speed fan control scheme based on relays. The working mode is as follows: through the built-in high, medium and low three-speed relay switching, the AC three-speed motor is controlled to run at the corresponding three fixed speeds, thereby realizing stepwise regulation of air volume. When the temperature detected by the indoor temperature sensor deviates from the set temperature, the controller drives the corresponding relay to act, switching the fan gear; when the temperature reaches the set value, the fan stops running completely. This technical scheme has become a common configuration in the industry due to its simple structure, low cost and good compatibility with existing fans.

[0004] However, in the above-mentioned traditional three-speed regulation scheme, the fan can only switch between a limited number of discrete gears, and cannot continuously adjust the air volume according to the actual temperature difference, resulting in obvious steps and overshoot in temperature control, making it difficult to achieve a high-precision constant temperature environment, and thus the fan regulation accuracy of the temperature controller is poor. SUMMARY

[0005] In view of the above-mentioned deficiencies in the prior art, the present application aims to provide a control method for continuous speed regulation of a fan for a temperature controller, which has the characteristic of improving the fan regulation accuracy of the temperature controller.

[0006] The above-mentioned first application of the present application is achieved by the following technical scheme: A control method for continuous speed regulation of a fan for a temperature controller, comprising: real-time acquisition of temperature data of the current environment and acquisition of target temperature data; determination of temperature difference data based on the target temperature data and the temperature data of the current environment; determination of a corresponding preset temperature difference interval based on the temperature difference data; determination of a corresponding target speed regulation parameter based on the preset temperature difference interval; calculation of a target conduction angle based on the target speed regulation parameter; generating a speed regulation instruction based on the target conduction angle, and controlling the fan to adjust based on the speed regulation instruction.

[0007] By adopting the technical scheme, the fan speed is continuously and dynamically adjusted according to the real-time temperature difference between the ambient temperature and the set temperature, so that step change of the fan speed is avoided, temperature stability is improved, and the fan speed is automatically increased, decreased or maintained through mapping of the temperature difference interval and the target conduction angle, so that running noise is reduced, energy consumption is optimized, and user comfort is improved.

[0008] Preferably, the temperature data of the current environment is collected in real time, including: an analog voltage signal is obtained by a temperature sensor; an initial temperature sampling data is obtained by analog-digital conversion of the analog voltage signal; temperature data of the current environment is obtained by digital filtering processing of the initial temperature sampling data.

[0009] By adopting the technical scheme, the sensor analog signal is converted into a digital signal by analog-digital conversion, which is convenient for accurate processing by a microcontroller, and environmental noise and signal interference are effectively suppressed by digital filtering, so that the stability and accuracy of temperature sampling are improved, and the reliability of the obtained environmental temperature data is ensured.

[0010] Preferably, the temperature difference data is determined based on the target temperature data and the temperature data of the current environment, including: an algebraic difference operation is performed on the target temperature data and the temperature data of the current environment to obtain a temperature deviation value; an absolute value operation is performed on the temperature deviation value to obtain an absolute value of the temperature difference as the temperature difference data.

[0011] By adopting the technical scheme, the target temperature data and the temperature data of the current environment are first subjected to an algebraic difference operation, and then subjected to an absolute value operation, so that the temperature difference is unified as a positive value, the control logic is simplified, and the normativity and consistency of the temperature difference data processing are ensured.

[0012] Preferably, the preset temperature difference interval includes at least a first temperature difference interval, a second temperature difference interval and a third temperature difference interval. The corresponding preset temperature difference interval is determined based on the temperature difference data, including: the temperature difference data is compared with at least two preset temperature thresholds to obtain a comparison result, wherein the preset temperature thresholds include at least a first threshold and a second threshold, and the first threshold is greater than the second threshold; Based on the comparison result, a temperature difference interval corresponding to the temperature difference data is determined, wherein when the temperature difference data is greater than or equal to the first threshold value, it is determined to belong to the first temperature difference interval, when the temperature difference data is less than the first threshold value and greater than or equal to the second threshold value, it is determined to belong to the second temperature difference interval, and when the temperature difference data is less than the second threshold value, it is determined to belong to the third temperature difference interval.

[0013] By adopting the above technical solution, multiple temperature thresholds are set to divide the temperature difference into different intervals, and the corresponding speed regulation intensity can be flexibly matched according to the interval in which the temperature difference is located, so that the speed is quickly adjusted when the temperature difference is large and the target is approached. Fine control, which not only ensures the adjustment response speed, but also improves the temperature stability and comfort.

[0014] Preferably, the target conduction angle is calculated based on the target speed regulation parameter, comprising: Difference operation is performed on the preset upper limit value of the conduction angle and the preset lower limit value of the conduction angle to obtain the adjustment range of the conduction angle; The target speed regulation parameter and the preset speed regulation parameter are subjected to ratio operation to obtain a speed regulation proportion coefficient; The speed regulation proportion coefficient and the adjustment range of the conduction angle are subjected to product operation to obtain an adjustment component; The upper limit value of the conduction angle and the adjustment component are subjected to difference operation to obtain a target conduction angle.

[0015] By adopting the above technical solution, based on the preset conduction angle adjustment range, the speed regulation parameter is converted into a corresponding adjustment component through proportional operation, and an accurate target conduction angle is calculated, realizing a smooth and stepless corresponding relationship between the fan speed and the temperature difference demand, avoiding the step feeling of traditional gear switching, and effectively improving the continuity of speed regulation and the fineness of control.

[0016] Preferably, based on the target conduction angle, a speed regulation instruction is generated, and the fan is controlled to adjust based on the speed regulation instruction, comprising: Based on the target conduction angle, a corresponding phase control signal is generated; The phase control signal is output to the control end of an electronic switching device connected in series in the power supply circuit of the fan; The electronic switching device is controlled to cut and modulate the input AC voltage waveform of the fan based on the phase control signal in each AC power supply cycle to continuously adjust the speed of the fan.

[0017] By adopting the technical scheme, the phase control signal is used to drive the electronic switching device to cut and modulate the AC voltage waveform of the fan power supply circuit in real time, so as to continuously control the effective value of the power supply voltage applied to the fan, continuously and smoothly adjust the input voltage effective value of the fan, and finally make the fan speed change steplessly, effectively overcome the speed step and noise problem caused by the traditional relay switching mode, and improve the fan regulation accuracy of the temperature controller.

[0018] The second object of the present application is to provide a fan continuous speed regulation control device for a temperature controller, which has the characteristic of improving the fan regulation accuracy of the temperature controller.

[0019] The second object of the present application is achieved by the following technical scheme: A fan continuous speed regulation control device for a temperature controller, comprising: A data acquisition module, configured to acquire temperature data of a current environment and target temperature data in real time; A first calculation module, configured to determine temperature difference data based on the target temperature data and the temperature data of the current environment; An interval determination module, configured to determine a corresponding preset temperature difference interval based on the temperature difference data; An instruction determination module, configured to determine a corresponding target speed regulation parameter based on the preset temperature difference interval; A second calculation module, configured to calculate a target conduction angle based on the target speed regulation parameter; An instruction generation module, configured to generate a speed regulation instruction based on the target conduction angle, and control the fan to be regulated based on the speed regulation instruction.

[0020] By adopting the technical scheme, the functions of the modules are cooperated in sequence, the environment temperature difference is accurately mapped into the fan driving signal steplessly, so that the smooth and continuous regulation of the fan speed is ensured, and the dynamic performance and steady precision of the temperature control device are effectively improved.

[0021] The third object of the present application is to provide a fan continuous speed regulation control system for a temperature controller, which has the characteristic of improving the fan regulation accuracy of the temperature controller.

[0022] The third object of the present application is achieved by the following technical scheme: A fan continuous speed regulation control system for a temperature controller, comprising: The fan continuous speed regulation control device for a temperature controller as described in the second object: A main control unit; A temperature sensor connected to the main control unit; A speed regulation circuit, an input end of the speed regulation circuit being configured to be connected to a power supply; At least three wind speed relays, one end of each of the wind speed relays is connected to the output end of the speed regulation circuit, and the other end is respectively used for being connected to different rotating speed windings of the fan; The main control unit is used for receiving the signal of the temperature sensor and generating a speed regulation instruction, and outputting the speed regulation instruction to the speed regulation circuit. The speed regulation circuit is used for driving the fan to realize continuous adjustment of rotating speed in response to the speed regulation instruction.

[0023] By adopting the above technical scheme, the speed regulation circuit is arranged in front of the common power supply end of the wind speed relays on the basis of retaining the traditional three-speed fan winding and relay structure, the supply voltage of the fan is concentrated and continuously modulated, the temperature deviation is converted into a stepless speed regulation signal in real time through the cooperative work of the temperature sensor, the main control unit and the speed regulation circuit, the smooth upgrade from the step adjustment to the continuous speed regulation is realized on the premise of fully compatible with the original fan hardware, and the temperature control precision is improved, and the operation noise and energy consumption are reduced.

[0024] The fourth object of the present application is to provide an electronic device with the characteristic of improving the fan adjustment precision of the temperature controller.

[0025] The fourth object of the present application is achieved by the following technical scheme: An electronic device includes a memory and a processor, and the memory stores a computer program capable of being loaded and executed by the processor to perform the control method for continuous speed regulation of the fan of the temperature controller.

[0026] The fifth object of the present application is to provide a computer readable storage medium capable of storing a corresponding program, with the characteristic of facilitating the improvement of the fan adjustment precision of the temperature controller.

[0027] The fifth object of the present application is achieved by the following technical scheme: A computer readable storage medium stores a computer program capable of being loaded and executed by the processor to perform the control method for continuous speed regulation of the fan of the temperature controller.

[0028] In summary, the present application has at least one of the following beneficial technical effects: The present application calculates the deviation between the current temperature and the user set temperature, determines the temperature difference interval and the target speed regulation parameter, calculates the silicon controlled rectifier conduction angle through the target speed regulation parameter, controls the fan supply voltage waveform through the adjustment of the silicon controlled rectifier conduction angle, realizes the continuous stepless speed regulation of the fan, changes the traditional three-step discrete speed regulation into a continuous speed regulation mode, improves the fan adjustment precision, and reduces the fan operation noise and energy consumption.

[0029] The application maps different temperature difference data to different temperature difference intervals, so that each temperature difference interval corresponds to different target speed regulation parameters, thereby adaptively adjusting the fan speed according to the temperature difference size, not only ensuring fast adjustment when the temperature difference is large to enhance the response speed, but also ensuring fine control when the temperature difference is small to improve temperature stability.

[0030] According to the preset upper limit of the conduction angle, the lower limit of the conduction angle and the target speed regulation parameter, the target conduction angle of the thyristor is calculated through proportional mapping, the target speed regulation parameter can be linearly converted into a specific angle value in the conduction angle adjustment range, the smooth correspondence from the temperature difference parameter to the thyristor driving signal is realized, so that the fan supply voltage can be accurately controlled by adjusting the conduction angle, and stepless continuous adjustment of the fan speed is realized. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a step flowchart of a control method for continuous speed regulation of a fan of a temperature controller provided by an embodiment of the application.

[0032] Figure 2 is a temperature control closed-loop control flowchart of a control device for continuous speed regulation of a fan of a temperature controller provided by an embodiment of the application.

[0033] Figure 3 is a business flowchart of a control device for continuous speed regulation of a fan of a temperature controller provided by an embodiment of the application.

[0034] Figure 4 is a structure block diagram of a control device for continuous speed regulation of a fan of a temperature controller provided by an embodiment of the application.

[0035] Figure 5 is a circuit schematic diagram of a prior art three-speed fan regulation mode provided by an embodiment of the application.

[0036] Figure 6 is a circuit schematic diagram of a control system for continuous speed regulation of a fan of a temperature controller provided by an embodiment of the application.

[0037] Figure 7 is a principle schematic diagram of a control system for continuous speed regulation of a fan of a temperature controller provided by an embodiment of the application. DETAILED DESCRIPTION

[0038] The embodiment of the present application provides a control method, device and system for continuous speed regulation of a fan of a temperature controller, and is used for solving the technical problem that in a traditional three-speed regulation scheme, the fan can only be switched among a limited number of discrete gears, and cannot be continuously regulated according to an actual temperature difference, so that obvious steps and overshoots exist in temperature control, and a high-precision constant temperature environment is difficult to realize, thereby causing poor fan regulation precision of the temperature controller.

[0039] The existing three-speed fan regulation mode is that a temperature controller controls high, medium and low three gears of the fan through three built-in relays, so as to realize three-stage regulation of air volume. When the temperature controller detects that an actual temperature is equal to a set temperature, the fan stops running; when there is a temperature difference, the fan runs at one of the high, medium and low gears. Although this scheme can realize basic temperature regulation, the following disadvantages exist: 1. The traditional temperature controller adopts a three-speed motor and a relay switching mode, and the fan can only be switched among high, medium and low gears, and cannot be continuously regulated according to an actual temperature demand. This causes that the temperature regulation system is not fine enough to the environmental temperature, and the temperature control precision is low, and it is difficult to meet the high-comfort and high-precision temperature control demand.

[0040] 2. The fan can only run at fixed gears, and especially when the temperature difference is large, the fan often runs at a high gear, which produces large noise and affects the comfort of the user's living and working environment.

[0041] 3. The fan cannot flexibly adjust the speed according to the actual load and temperature demand, and often runs at unnecessary high speed, which causes increased energy consumption and unsatisfactory energy-saving effect.

[0042] 4. Only gear regulation can be realized through relay switching, and there is lack of flexibility, and it is difficult to adapt to diversified demand for air volume and temperature regulation in different scenes.

[0043] The present application is based on the above-mentioned prior art, and aims at the problems of non-continuous fan speed regulation, low temperature control precision, large noise and high energy consumption, and provides an innovative improvement scheme.

[0044] In order to make the invention purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the following described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0045] It should be noted that, in the embodiments of this invention, when the relevant object information and other related data are used in specific products or technologies, permission or consent from the object is required, and the collection, use, and processing of the relevant data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. In other words, if the embodiments of this invention involve data related to an object, it must be obtained with the object's authorization and consent, the authorization and consent of relevant departments, and in accordance with the relevant laws, regulations, and standards of the country and region. If personal information is involved in the embodiments, the acquisition of all personal information requires the individual's consent; if sensitive information is involved, the separate consent of the information subject is required. The embodiments also need to be implemented with the object's authorization and consent.

[0046] It should be noted that the terms "first," "second," etc., used in this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this disclosure.

[0047] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship. Example 1

[0048] Please see Figure 1 - Figure 3 The present invention provides a control method for continuous speed regulation of a fan in a thermostat, comprising: Step 101: Collect the current ambient temperature data in real time and obtain the target temperature data.

[0049] Target temperature data refers to the desired ambient temperature value set by the user or preset by the system.

[0050] The current ambient temperature data refers to the actual ambient temperature value obtained in real time through sensors and conversion.

[0051] Preferably, real-time acquisition of current ambient temperature data may include the following sub-steps: S11. Obtain analog voltage signals through a temperature sensor.

[0052] Analog voltage signal refers to an electrical signal whose voltage amplitude changes continuously with the ambient temperature of the measured environment, output by a temperature sensor. This signal is usually a continuous and smooth DC or slowly varying voltage. There is a definite correspondence between the voltage value and the temperature value, which is usually a linear or nonlinear relationship with positive or negative correlation. It can directly reflect the instantaneous information of the ambient temperature.

[0053] In this embodiment of the invention, the temperature sensor is connected to a voltage divider circuit. When the ambient temperature of the sensor changes, its own resistance value changes accordingly, causing the voltage at the voltage divider point to change continuously, thereby generating an analog voltage signal. This signal is extracted and transmitted to the analog signal input port of the main control unit as the original electrical characterization for subsequent temperature quantization.

[0054] S12. Perform analog-to-digital conversion on the analog voltage signal to obtain the initial temperature sampling data.

[0055] Initial temperature sampling data refers to the digital quantity that corresponds to the instantaneous amplitude of the analog voltage signal, obtained directly through analog-to-digital conversion.

[0056] In this embodiment of the invention, the analog-to-digital converter integrated inside the main control unit performs periodic sampling and quantization processing on the input analog voltage signal. The analog-to-digital converter captures the instantaneous value of the analog voltage signal according to a preset sampling frequency and converts it into a digital quantity proportional to the voltage value. This digital quantity is the initial temperature sampling data, and its value directly corresponds to the analog voltage amplitude at the sampling time, thereby indirectly reflecting the ambient temperature at that time.

[0057] S13. Perform digital filtering on the initial temperature sampling data to obtain the current ambient temperature data.

[0058] In this embodiment of the invention, the main control unit processes multiple continuously acquired initial temperature sampling data by running a preset digital filtering algorithm, such as moving average filtering, median filtering, or first-order low-pass filtering, to suppress or eliminate high-frequency fluctuations and outliers introduced by circuit noise, instantaneous environmental interference, or sampling jitter, thereby smoothing the data sequence and extracting the low-frequency effective components that reflect the true temperature change trend. The stable value output after filtering is used as the temperature data of the current environment for the final temperature difference calculation and speed adjustment decision.

[0059] Step 102: Determine the temperature difference data based on the target temperature data and the current ambient temperature data.

[0060] Preferably, step 102 may include the following sub-steps: S21. Perform an algebraic difference operation between the target temperature data and the current ambient temperature data to obtain the temperature deviation value.

[0061] Algebraic difference operation refers to the subtraction of two values ​​and the retention of the positive or negative sign of the result.

[0062] Temperature deviation refers to the algebraic difference between the current ambient temperature data and the target temperature data.

[0063] In this embodiment of the invention, the main control unit reads the target temperature data set by the user, such as the temperature value set by the user through the thermostat panel, and subtracts the current ambient temperature data. That is, it performs the operation of subtracting the target temperature data from the current ambient temperature data to obtain a signed temperature difference value as a temperature deviation value. This value can be positive (indicating that the current temperature is higher than the target temperature), negative (indicating that the current temperature is lower than the target temperature), or zero (indicating that the current temperature is equal to the target temperature).

[0064] S22. Take the absolute value of the temperature deviation value to obtain the absolute value of the temperature difference, which is used as the temperature difference data.

[0065] The absolute value of temperature difference refers to the non-negative value of the temperature deviation, indicating the degree of difference between the current temperature and the target temperature.

[0066] Temperature difference data refers to the temperature difference after absolute value processing, which is used to determine the speed regulation intensity and corresponding strategy.

[0067] In this embodiment of the invention, the main control unit performs an absolute value operation on the previous temperature deviation value, removes the positive and negative signs of the temperature deviation value, and only retains its numerical value, thereby uniformly quantifying the temperature deviation into a non-negative value, namely the absolute value of the temperature difference. This value is used as the temperature difference data for subsequent interval judgment and speed regulation parameter mapping, so that the control is adjusted only based on the magnitude of the temperature difference, which simplifies the control logic and ensures the consistency of speed regulation behavior.

[0068] It should be noted that the formula encapsulated in step 102 is:

[0069] In the formula, For temperature difference data, The current ambient temperature data, For target temperature data.

[0070] Step 103: Based on the temperature difference data, determine the corresponding preset temperature difference range.

[0071] The preset temperature difference range includes at least a first temperature difference range, a second temperature difference range, and a third temperature difference range.

[0072] Preferably, step 103 may include the following sub-steps: S31. Compare the temperature difference data with at least two preset temperature thresholds to obtain a comparison result, wherein the preset temperature thresholds include at least a first threshold and a second threshold, and the first threshold is greater than the second threshold.

[0073] Temperature threshold refers to the pre-set boundary temperature value used to divide different temperature difference ranges, which can be set as needed according to control accuracy and response requirements.

[0074] The first threshold refers to a larger temperature boundary value, used to define a larger temperature difference range.

[0075] The second threshold refers to a smaller temperature boundary value, used to divide a smaller temperature difference range.

[0076] In this embodiment of the invention, the main control unit compares the temperature difference data with two temperature thresholds pre-stored in the memory, for example, the first threshold can be 3.0℃ and the second threshold can be 1.5℃, that is, it determines whether the temperature difference data is greater than or equal to the first threshold and whether it is greater than or equal to the second threshold. Based on the comparison results, the relative position of the temperature difference data with respect to each threshold interval can be obtained.

[0077] S32. Based on the comparison results, determine the temperature difference interval corresponding to the temperature difference data. When the temperature difference data is greater than or equal to the first threshold, it is determined to belong to the first temperature difference interval. When the temperature difference data is less than the first threshold but greater than or equal to the second threshold, it is determined to belong to the second temperature difference interval. When the temperature difference data is less than the second threshold, it is determined to belong to the third temperature difference interval.

[0078] The first temperature difference range refers to situations with a large temperature difference, which usually require a faster acceleration to respond quickly to temperature changes.

[0079] The second temperature difference range refers to the situation where the temperature difference is moderate, requiring a moderate speed adjustment intensity to achieve a smooth transition.

[0080] The third temperature difference range refers to situations where the temperature difference is relatively small, requiring fine speed adjustment to maintain temperature stability and reduce noise and energy consumption.

[0081] Understandably, the main control unit performs a preset logical judgment based on the comparison results of the temperature difference data with the first threshold and the second threshold to determine the temperature difference range to which the temperature difference data belongs. Specifically, if the temperature difference data is greater than or equal to the first threshold, for example, 3.0℃, it is determined to belong to the first temperature difference range, which means that the current temperature difference is large; if the temperature difference data is less than the first threshold but greater than or equal to the second threshold, for example, 1.5℃, it is determined to belong to the second temperature difference range, which means that the temperature difference is moderate; if the temperature difference data is less than the second threshold, it is determined to belong to the third temperature difference range, which means that the current temperature difference is small.

[0082] For example, suppose a first threshold is preset. The second threshold is 3.0℃. 1.5℃: If the current temperature difference is 4.2℃, since 4.2 ≥ 3.0, it belongs to the first temperature difference range. The control system will output a higher speed regulation parameter to make the fan run in a higher speed range to achieve rapid temperature regulation. If the current temperature difference is 2.3℃, since 2.3 < 3.0 and 2.3 ≥ 1.5, it belongs to the second temperature difference range. The control system will output a medium speed regulation parameter accordingly, so that the fan runs in the medium speed range and achieves a smooth transition. If the current temperature difference is 0.8℃, since 0.8 < 1.5, it belongs to the third temperature difference range. The control system will output a lower speed regulation parameter accordingly, so that the fan runs at a low speed or micro speed range, reducing noise and energy consumption while maintaining temperature stability.

[0083] It is worth mentioning that the above interval division is only an example. In practical applications, it can be flexibly set and expanded according to different control precision, response speed and noise requirements. For example, it can be further divided into four temperature difference intervals to provide a more refined speed regulation gradient. Under this division method, Zone I still corresponds to a large temperature difference and requires the highest speed response; Zone II corresponds to a medium to large temperature difference and adopts a relatively high speed; Zone III corresponds to a small temperature difference and performs a medium to weak speed adjustment; Zone IV corresponds to a small temperature difference and executes the lowest speed or maintains a low speed operation to further improve temperature stability and comfort.

[0084] It should be noted that the thresholds and number of intervals mentioned above are for illustrative purposes only. In actual applications, they can be dynamically configured and optimized according to the specific application scenarios, such as the temperature control requirements of residences, offices, laboratories, etc.

[0085] In this embodiment of the invention, based on the comparison results, the temperature difference range corresponding to the temperature difference data is determined, and different speed regulation strategies can be matched for different temperature difference ranges, thereby realizing continuous control that combines coarse adjustment and fine adjustment.

[0086] Step 104: Determine the corresponding target speed regulation parameters based on the preset temperature difference range.

[0087] The target speed regulation parameter refers to a numerical value determined based on the temperature difference range, used to quantify the speed regulation intensity, and serves as an intermediate input variable for calculating the target conduction angle.

[0088] It is worth mentioning that, based on the determined temperature difference range, the target speed regulation parameter corresponding to the temperature difference range can be determined by looking up the preset mapping relationship or executing the corresponding control algorithm. The target speed regulation parameter is usually a value, for example, in the range of 0 to 255, which is used to characterize the fan speed regulation intensity expected to be achieved under the current temperature difference range. The larger the value, the higher the required fan speed is generally.

[0089] For example, assume the following mapping relationship between temperature difference range and target speed regulation parameters is preset: First temperature difference range (ΔT≥3.0℃): Set the target speed regulation parameter to 200~255, for example, take the median value of 230; Second temperature difference range (1.5℃≤ΔT<3.0℃): Set the target speed regulation parameter to 100~199, for example, take the median value of 150; Third temperature difference range (ΔT < 1.5℃): Set the target speed regulation parameter to 0 to 99, for example, take the median value of 50.

[0090] If the current temperature difference data is determined to be within the second temperature difference range, the preset value of 150 can be directly retrieved as the target speed regulation parameter. This value will be used to calculate the target conduction angle and then control the fan to run at a medium speed.

[0091] It is worth mentioning that in more precise control, the target speed regulation parameter can also be calculated linearly or nonlinearly within the range based on the temperature difference. For example, in the second temperature difference range, when the temperature difference changes from 1.5℃ to 3.0℃, the target speed regulation parameter can be linearly increased from 100 to 199 accordingly, thereby achieving a smoother speed transition.

[0092] It should be noted that the specific values ​​of the target speed regulation parameters can be flexibly set and adjusted according to the response characteristics of the actual speed regulation circuit, the speed-voltage relationship of the fan, and the temperature control requirements under different application scenarios. For example, in noise-sensitive environments, the upper limit of the speed regulation parameters corresponding to each range can be appropriately reduced, while in situations requiring rapid response, the parameter range can be increased. The mapping relationship can also be optimized through experimental calibration or adaptive algorithms to ensure that the speed regulation effect matches the actual needs.

[0093] In this embodiment of the invention, based on a preset temperature difference range, the corresponding target speed regulation parameters are determined, which can respond quickly when there is a large temperature difference and adjust finely when there is a small temperature difference, effectively reducing operating noise and energy consumption.

[0094] Step 105: Calculate the target conduction angle based on the target speed regulation parameters.

[0095] Preferably, step 105 may include the following sub-steps: S41. Perform a difference calculation on the preset upper limit value of the conduction angle and the preset lower limit value of the conduction angle to obtain the adjustment range of the conduction angle.

[0096] The upper limit of the conduction angle refers to the maximum angle at which the thyristor is allowed to conduct in each half-wave of the AC power supply, corresponding to the highest power supply voltage and speed of the fan.

[0097] The lower limit of the conduction angle refers to the minimum angle at which the thyristor is allowed to conduct, corresponding to the lowest sustainable power supply voltage and speed of the fan.

[0098] The adjustment range of the conduction angle refers to the difference between the upper and lower limits of the conduction angle, representing the overall angle range within which the conduction angle can be adjusted.

[0099] The conduction angle refers to the electrical angle between the voltage zero-crossing point and the moment the thyristor is triggered to conduct within each half-wave cycle of the AC power supply. By adjusting the size of this angle, the effective value of the actual voltage received by the load (fan) in each half-wave can be controlled, thereby achieving the purpose of continuously adjusting the fan speed. In this embodiment, the conduction angle is the thyristor conduction angle.

[0100] Preferably, the preset upper limit of the conduction angle is 150° and the preset lower limit of the conduction angle is 30°. These upper and lower limits can be adjusted according to actual needs.

[0101] In this embodiment of the invention, the main control unit reads the preset upper limit and lower limit of the conduction angle from the internal storage unit and performs a subtraction operation between the two, i.e., upper limit value - lower limit value, to obtain the adjustment range of the conduction angle. This adjustment range represents the overall angle span that the conduction angle of the thyristor can be continuously adjusted, providing a calculation basis for subsequently mapping the target speed regulation parameter to a specific conduction angle.

[0102] S42. Calculate the ratio between the target speed regulation parameter and the preset speed regulation parameter to obtain the speed regulation ratio coefficient.

[0103] The preset speed regulation parameters refer to the maximum values ​​of the target speed regulation parameters, which are used to characterize the maximum adjustment capability of the speed regulation system.

[0104] The speed regulation ratio coefficient refers to the ratio of the target speed regulation parameter to the preset speed regulation parameter. It is a dimensionless value between 0 and 1, used to characterize the relative proportion of the target speed regulation intensity in the overall speed regulation capability.

[0105] Preferably, the preset speed regulation parameter is the maximum speed regulation parameter of 255, wherein the speed regulation parameter can be adjusted according to the speed regulation resolution and actual needs.

[0106] In this embodiment of the invention, the main control unit performs a division operation between the target speed regulation parameter and a preset speed regulation parameter, such as the maximum speed regulation parameter of 255, i.e., target speed regulation parameter ÷ preset speed regulation parameter, to obtain a speed regulation ratio coefficient, which is used to subsequently map the ratio relationship to the adjustment range of the conduction angle, thereby realizing a linear conversion from digital speed regulation parameter to physical conduction angle.

[0107] S43. Multiply the speed regulation ratio coefficient and the adjustment range of the conduction angle to obtain the adjustment component.

[0108] The adjustment component refers to the product of the speed regulation ratio coefficient and the conduction angle adjustment range, which indicates the specific angle adjustment required relative to its upper limit value under the current speed regulation requirements.

[0109] In this embodiment of the invention, the speed regulation ratio coefficient of the main control unit is multiplied with the conduction angle adjustment range to calculate the adjustment component. This adjustment component represents the angle value that needs to be subtracted or adjusted from the upper limit of the conduction angle under the current speed regulation intensity, providing intermediate parameters for subsequent calculation of the specific target conduction angle.

[0110] S44. Perform a difference calculation between the upper limit of the conduction angle and the adjustment component to obtain the target conduction angle.

[0111] The target conduction angle refers to the thyristor trigger conduction angle calculated based on the current speed regulation requirements.

[0112] In this embodiment of the invention, the main control unit subtracts the adjustment component from the preset upper limit of the conduction angle to obtain the target conduction angle. The target conduction angle is the specific conduction angle at which the thyristor should be triggered under the current temperature difference and control requirements. Its value is between the lower limit and the upper limit of the conduction angle and is used to generate the corresponding phase control signal, thereby realizing the continuous adjustment of the power supply voltage of the fan.

[0113] It should be noted that the formula in step 105 is encapsulated as follows:

[0114] In the formula, For the target conduction angle, This is the upper limit of the conduction angle. Here, S represents the lower limit of the conduction angle, and S represents the target speed regulation parameter. The preset speed regulation parameter can be set to 255.

[0115] For example, the AC input voltage is 220V / 50Hz, and the thyristor conduction angle range is the lower limit of the conduction angle. =30°, upper limit of conduction angle =150°, the target speed regulation parameter output by the main control unit is S, and the value range is: S∈[0,255], then the conduction angle of the thyristor is... The correspondence between the target speed regulation parameter S and the target speed regulation parameter S is as follows:

[0116] That is, S=0→ =150°, minimum output voltage, minimum fan speed; S=255→ =30°, maximum output voltage, maximum fan speed.

[0117] It is understandable that the fan speed can be continuously adjusted by controlling the corresponding effective supply voltage through continuous changes in the conduction angle.

[0118] Step 106: Based on the target conduction angle, generate a speed regulation command and control the fan to adjust according to the speed regulation command.

[0119] Preferably, step 106 may include the following sub-steps: S51. Generate the corresponding phase control signal based on the target conduction angle.

[0120] Phase control signal refers to a pulse signal generated by the main control unit, which has a specific delay time between the leading edge of the pulse and the zero-crossing point of the AC power supply voltage.

[0121] Understandably, within each AC half-wave cycle, the timer starts counting from the zero-crossing point. When the count reaches the time point corresponding to the target conduction angle, the main control unit outputs a trigger pulse with a certain pulse width from the designated pin.

[0122] In this embodiment of the invention, the main control unit generates a corresponding phase control signal by configuring the timer module based on the target conduction angle and the AC power supply voltage zero-crossing synchronization signal obtained by the internal zero-crossing detection circuit or software phase-locked loop.

[0123] S52. Output the phase control signal to the control terminal of the electronic switching device connected in series in the power supply circuit of the wind turbine.

[0124] The power supply circuit refers to the electrical path that provides the working power to the wind turbine, including but not limited to the closed current path formed by the power input terminal, electronic switching devices, wind speed relay, wind turbine windings and corresponding connecting wires.

[0125] Electronic switching devices refer to semiconductor power switching elements that are connected in series in the power supply circuit of a wind turbine and whose conduction and cutoff states can be controlled by external electrical signals. These include, but are not limited to, silicon controlled rectifiers, insulated gate bipolar transistors (IGBTs), or power field-effect transistors (MOSFETs), and are mainly used for phase-shifting chopping modulation of AC voltage.

[0126] In this embodiment of the invention, the main control unit outputs the phase control signal to the control terminal of the electronic switching device after electrical isolation and power amplification via an isolation drive circuit.

[0127] S53. The electronic switching device controls the AC voltage waveform of the input fan based on the phase control signal, thereby continuously adjusting the fan speed in each AC power cycle.

[0128] The AC power cycle refers to the time required for an AC voltage or current to complete one full waveform change, usually expressed in milliseconds. For example, the cycle of 50Hz AC power is 20ms.

[0129] Waveform cutting modulation refers to a modulation technique that cuts off the first part of a complete sinusoidal AC voltage waveform by controlling the turn-on timing of electronic switching devices, allowing only the second part to pass through the load, thereby changing the effective value of the voltage across the load.

[0130] Stepless continuous control refers to the smooth and uninterrupted change of output quantities such as voltage and speed, without obvious gears or step jumps, achieving fine adjustment.

[0131] Understandably, within each half-wave cycle of the AC voltage, after a delay corresponding to the target conduction angle from the voltage zero-crossing point, the phase control signal triggers the electronic switching device to conduct, keeping it in the conducting state for the remaining half-wave time until the current naturally crosses zero and turns off. By continuously adjusting this conduction delay time, i.e. the conduction angle, the actual voltage waveform obtained by the wind turbine winding in each half-wave can be dynamically changed, such as from a complete sine wave to a partially cut waveform, thereby continuously and smoothly adjusting the effective value of the output voltage.

[0132] In this embodiment of the invention, the phase control signal output by the main control unit precisely controls the on and off timing of the electronic switching devices in each AC power cycle, thereby achieving stepless continuous control of the fan speed.

[0133] Through the above-described feasible embodiments, the present invention uses the absolute value of the deviation between the ambient temperature and the set temperature as the sole input variable for continuous speed regulation, following a smooth control logic that increases speed when the temperature difference is large, decreases speed when the temperature difference is small, and maintains a low speed when the temperature difference is close to zero. Specifically: When |ΔT| is large, the main control unit outputs a higher speed control command, driving the fan to operate in a higher speed range to quickly deliver air volume and reduce temperature difference. As |ΔT| gradually decreases, the main control unit continuously and proportionally reduces the speed control command according to the decrease in temperature difference, so that the fan speed decreases smoothly, realizing stepless continuous speed regulation and avoiding the sudden speed change and temperature fluctuation caused by traditional gear switching. When |ΔT| approaches 0, the main control unit does not immediately shut down the fan, but outputs an extremely low speed control command to keep the fan at the lowest sustainable speed or a low speed, maintaining a small air volume for continuous air delivery. After reaching or approaching the set temperature, the fan continues to run at a low speed, which helps to maintain the uniformity and stability of the temperature field, avoids local temperature accumulation or rebound caused by the complete shutdown of the fan, effectively reduces noise, improves comfort, and achieves a more energy-efficient operating mode.

[0134] Through the aforementioned continuous, smooth, and stepless speed regulation mechanism, the crude control method of stopping when the temperature is reached and skipping gears when the temperature is reached in traditional three-speed relay control is solved, effectively improving temperature control accuracy, system stability, and user comfort.

[0135] It is worth mentioning that the above control method is compatible with the original three-speed fan structure, and can achieve a smooth upgrade without replacing the motor, thus having greater applicability. Example 2

[0136] Please see Figure 4 The present invention provides a control device for continuous speed regulation of a fan in a thermostat, comprising: The data acquisition module 101 is used to collect the current ambient temperature data in real time and obtain the target temperature data.

[0137] The first calculation module 102 is used to determine the temperature difference data based on the target temperature data and the current ambient temperature data.

[0138] The interval determination module 103 is used to determine the corresponding preset temperature difference interval based on the temperature difference data.

[0139] The instruction determination module 104 is used to determine the corresponding target speed regulation parameters based on a preset temperature difference range.

[0140] The second calculation module 105 is used to calculate the target conduction angle based on the target speed regulation parameters.

[0141] The instruction generation module 106 is used to generate speed regulation instructions based on the target conduction angle and control the fan to adjust according to the speed regulation instructions.

[0142] Since the above is a device corresponding to a method for continuous speed regulation of a fan in a thermostat, and its implementation principle is the same as that of a method for continuous speed regulation of a fan in a thermostat, for the sake of convenience and brevity, those skilled in the art can clearly understand that the specific working process of the device and module described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here. Example 3

[0143] Please see Figure 5 - Figure 7 The present invention provides a control system for continuous speed regulation of a fan in a thermostat, comprising: As in Example 2, a control device for continuous speed regulation of a fan used in a temperature controller: Main control unit; Temperature sensor, connected to main control unit; Speed ​​control circuit; the input terminal of the speed control circuit is used to connect to the power supply. At least three wind speed relays, one end of each wind speed relay is connected to the output terminal of the speed control circuit, and the other end is used to connect to different speed windings of the wind turbine; Among them, the main control unit is used to control the fan of the thermostat to continuously adjust the speed. The control device receives the signal from the temperature sensor and generates the speed adjustment command, and outputs the speed adjustment command to the speed adjustment circuit. The speed control circuit is used to respond to speed control commands and drive the fan to achieve continuous speed adjustment.

[0144] The main control unit refers to the core processor in the temperature controller that performs data processing, logical judgment, and control signal generation, such as a microcontroller (MCU) or microprocessor. It is used to receive temperature signals, run control algorithms, and output speed control commands to the speed control circuit.

[0145] A temperature sensor is a sensing element placed in the environment to be controlled to detect the ambient temperature and convert it into an electrical signal. Examples include thermistors and digital temperature sensors. The signal output terminal is connected to the main control unit.

[0146] A speed control circuit is a circuit connected in series between the power supply and the common input terminal of the wind speed relay. Its core components include electronic switching devices (such as thyristors) and corresponding drive circuits. It is used to modulate the AC power supply according to the speed control command output by the main control unit. By adjusting the conduction angle, frequency, or duty cycle of the electronic switching devices, the effective value or waveform of the voltage output to the wind turbine winding can be continuously changed, thereby achieving stepless speed regulation.

[0147] A wind speed relay is an electromagnetic switch element controlled by the main control unit and used to switch between different windings of a ventilation fan. In automatic speed control mode, it is mainly used to select the corresponding winding. In manual mode, it can also be used to achieve the traditional high, medium and low speed switching.

[0148] The different speed windings of the fan refer to the independent windings inside the AC three-speed motor corresponding to different speed levels, such as high, medium and low speeds. Each winding is led out through different terminals and connected to the corresponding wind speed relay. By selecting to connect different windings, the number of pole pairs or the wiring method of the motor can be changed, so that the motor can work at different speeds when the effective value of the input voltage is constant.

[0149] Understandably, the system includes a control device for continuous fan speed regulation of the thermostat, a thermostat main control unit, a temperature sensor, a speed regulation circuit, and at least three fan speed relays. The speed regulation circuit is connected in series between the power supply and the common input terminal of the at least three fan speed relays. The speed regulation circuit adjusts the effective value of the supply voltage to the fan speed relays according to the speed regulation command, thereby realizing continuous control of the fan input voltage. The speed regulation command includes a control signal characterizing the target speed regulation intensity. The speed regulation circuit adjusts at least one of its internal electronic switching devices, such as the conduction angle, switching frequency, or pulse duty cycle of a thyristor, IGBT, or power MOSFET, according to the signal, to modulate the AC voltage waveform output to the fan winding, thereby realizing continuous adjustment of the effective value of the supply voltage.

[0150] It should be noted that the wind speed relay is only used to switch between different speed windings of the fan and no longer undertakes the function of adjusting the air volume. In automatic speed regulation mode, the main control unit realizes stepless continuous adjustment of the fan speed through the speed regulation circuit. In manual mode, the main control unit can control the bypass of the speed regulation circuit or output full voltage, and rely on the wind speed relay to perform the traditional three-speed switching, thus being compatible with the original operation mode.

[0151] Furthermore, it should be understood that the speed control circuit in this embodiment is not limited to a specific circuit form. Any circuit module that can respond to speed control commands and modulate the electrical energy input to the fan to achieve continuous speed adjustment falls within the protection scope of this invention. Without departing from the core concept of this invention, those skilled in the art can choose various alternative implementation methods according to actual application scenarios and needs, for example: (1) A thyristor chopper circuit is used for phase-shift voltage regulation. The continuous control of AC power supply voltage is achieved by adjusting the conduction angle of the thyristor.

[0152] (2) A frequency converter circuit is used to continuously adjust the speed by adjusting the power frequency output to the fan.

[0153] (3) Replace the fan with a DC brushless motor and configure a corresponding DC speed control drive circuit to achieve continuous speed regulation by adjusting the input voltage or PWM duty cycle.

[0154] (4) Use a PWM modulation circuit to directly adjust the speed of the fan that supports PWM control.

[0155] (5) While retaining the multi-level relay structure, the electronic voltage regulating module is combined to realize graded continuous speed regulation.

[0156] (6) At the controller software level, by optimizing the fan start-stop and speed regulation algorithms, intelligent control of existing hardware can be achieved, thereby improving temperature control accuracy and energy-saving effect.

[0157] All of the above alternative solutions can realize the transformation of fan speed from discrete gear adjustment to continuous stepless adjustment, and have the beneficial effects of improving temperature control accuracy and reducing noise and energy consumption. They should all be considered within the scope of the technical concept disclosed in this embodiment. Example 4

[0158] An electronic device according to an embodiment of the present invention includes: a memory and a processor, wherein the memory stores a computer program; when the computer program is executed by the processor, the processor performs a control method for continuous fan speed regulation of a temperature controller as described in any of the above embodiments.

[0159] The memory can be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. The memory has storage space for program code used to perform any of the method steps described above. For example, the storage space for program code may include individual program codes for implementing the various steps in the methods described above. This program code can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact discs (CDs), memory cards, or floppy disks. The program code may be compressed, for example, in a suitable form. When run by a computing processing device, this code causes the computing processing device to perform the various steps in the methods described above. Example 5

[0160] This invention provides a computer-readable storage medium storing a computer program thereon, which, when executed, implements the control method for continuous fan speed regulation of a temperature controller according to any of the above embodiments.

[0161] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0162] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0163] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0164] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0165] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0166] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for continuously adjusting the speed of a fan for a temperature controller, characterized by, The method comprises the following steps: real-time acquisition of temperature data of the current environment and acquisition of target temperature data; determination of temperature difference data based on the target temperature data and the temperature data of the current environment; determination of a corresponding preset temperature difference interval based on the temperature difference data; determination of a corresponding target speed regulation parameter based on the preset temperature difference interval; calculation of a target conduction angle based on the target speed regulation parameter; generation of a speed regulation instruction based on the target conduction angle, and control of the fan to adjust based on the speed regulation instruction.

2. The method of claim 1, wherein, The real-time acquisition of temperature data of the current environment comprises the following steps: acquisition of an analog voltage signal by a temperature sensor; analog-to-digital conversion of the analog voltage signal to obtain initial temperature sampling data; digital filtering processing of the initial temperature sampling data to obtain the temperature data of the current environment.

3. The method of claim 1, wherein the method further comprises: The determination of the temperature difference data based on the target temperature data and the temperature data of the current environment comprises the following steps: algebraic difference operation on the target temperature data and the temperature data of the current environment to obtain a temperature deviation value; absolute value operation on the temperature deviation value to obtain a temperature difference absolute value as the temperature difference data.

4. The control method for continuous speed regulation of the fan of the temperature controller according to claim 1, wherein the preset temperature difference interval comprises at least a first temperature difference interval, a second temperature difference interval, and a third temperature difference interval; the determination of the corresponding preset temperature difference interval based on the temperature difference data comprises the following steps: comparison of the temperature difference data with at least two preset temperature thresholds to obtain a comparison result, wherein the preset temperature thresholds comprise at least a first threshold and a second threshold, and the first threshold is greater than the second threshold; determination of the temperature difference interval corresponding to the temperature difference data based on the comparison result, wherein when the temperature difference data is greater than or equal to the first threshold, it is determined to belong to the first temperature difference interval, when the temperature difference data is less than the first threshold and greater than or equal to the second threshold, it is determined to belong to the second temperature difference interval, and when the temperature difference data is less than the second threshold, it is determined to belong to the third temperature difference interval.

5. The method of claim 1, wherein the method further comprises: The calculation of the target conduction angle based on the target speed regulation parameter comprises the following steps: difference operation on a preset upper limit value of the conduction angle and a preset lower limit value of the conduction angle to obtain an adjustment range of the conduction angle; ratio operation on the target speed regulation parameter and a preset speed regulation parameter to obtain a speed regulation proportion coefficient; product operation on the speed regulation proportion coefficient and the adjustment range of the conduction angle to obtain an adjustment component; difference operation on the upper limit value of the conduction angle and the adjustment component to obtain a target conduction angle.

6. The method of claim 1, wherein, The generation of the speed regulation instruction based on the target conduction angle and the control of the fan to adjust based on the speed regulation instruction comprises the following steps: generation of a corresponding phase control signal based on the target conduction angle; output of the phase control signal to a control end of an electronic switching device connected in series in a power supply circuit of the fan; control of the electronic switching device to cut and modulate an input AC voltage waveform of the fan in each AC power supply cycle based on the phase control signal to continuously adjust the rotating speed of the fan.

7. A control device for continuously regulating the speed of a fan for a temperature controller, characterized by, The method comprises the following steps: The data acquisition module is configured to acquire temperature data of a current environment in real time and obtain target temperature data. The first calculation module is configured to determine temperature difference data based on the target temperature data and the temperature data of the current environment. The interval determination module is configured to determine a preset temperature difference interval corresponding to the temperature difference data. The instruction determination module is configured to determine a target speed regulation parameter corresponding to the preset temperature difference interval. The second calculation module is configured to calculate a target conduction angle based on the target speed regulation parameter. The instruction generation module is configured to generate a speed regulation instruction based on the target conduction angle and control the fan to adjust based on the speed regulation instruction.

8. A control system for continuously variable speed of a fan for a temperature controller, characterized by, The system comprises: The control device for continuous speed regulation of a fan of a temperature controller according to claim 7: a main control unit; a temperature sensor connected to the main control unit; a speed regulation circuit, an input end of the speed regulation circuit being configured to be connected to a power supply; at least three wind speed relays, one end of each of the wind speed relays being connected to an output end of the speed regulation circuit, and the other end of each of the wind speed relays being configured to be connected to different speed windings of a fan; wherein the main control unit is configured to control the control device for continuous speed regulation of the fan of the temperature controller to receive a signal of the temperature sensor and generate a speed regulation instruction, and output the speed regulation instruction to the speed regulation circuit; the speed regulation circuit is configured to drive the fan to realize continuous speed regulation in response to the speed regulation instruction.

9. An electronic device, comprising: The computer program stored on the memory and capable of being loaded and executed by the processor to perform the control method for continuous speed regulation of a fan of a temperature controller according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that, The computer program stored on the memory and capable of being loaded and executed by the processor to perform the control method for continuous speed regulation of a fan of a temperature controller according to any one of claims 1 to 6.

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