CN-120627550-B - Method, system and equipment for regulating temperature of refrigerated cabinet

Abstract

The invention relates to the technical field of energy conservation of a refrigerated cabinet, in particular to a temperature regulation method, a system and equipment for the refrigerated cabinet, which are used for sensing temperature data and a temperature interval in the refrigerated cabinet, judging whether a control signal is required to be output by adopting a logic judgment method, constructing a temperature data set by adopting a sliding window algorithm, carrying out weighted smoothing treatment on the temperature data, replacing the temperature data with the temperature data in the refrigerated cabinet, setting a temperature fluctuation amplitude threshold value, if the temperature fluctuation amplitude is smaller than the amplitude threshold value, not carrying out replacement, reducing the data quantity when the temperature data set is constructed, if the temperature data set is in a decreasing trend, reducing the upper limit of the temperature interval, and outputting a starting signal when the temperature data after the weighted smoothing treatment is judged to be the upper limit of the temperature interval after the weighted smoothing treatment, wherein the temperature data in the refrigerated cabinet is the temperature data after the weighted smoothing treatment at the moment of S2.

Inventors

• SUN CHENGHAI
• He Yineng

Assignees

• 南通艾卡制冷设备有限公司

Dates

Publication Date

20260512

Application Date

20250702

Claims (7)

1. 1. A method for regulating the temperature of a refrigerated cabinet comprising the steps of: s1, sensing temperature data and temperature intervals in a refrigerated cabinet, and judging whether a control signal needs to be output or not by adopting a logic judgment method; S2, constructing a temperature data set by adopting a sliding window algorithm, carrying out weighted smoothing treatment on the temperature data, replacing the temperature data with the temperature data in the refrigerator, setting a temperature fluctuation range threshold value, and if the temperature fluctuation range is less than the range threshold value, not replacing the temperature fluctuation range; S3, analyzing a temperature data change trend in the temperature data set, if the trend is a decreasing trend, reducing the data quantity when the temperature data set is constructed, and if the trend is an increasing trend, reducing the upper limit of the temperature interval; in the S1, the logic judgment method is that if the collected temperature data=the upper limit of the temperature interval, a starting signal is output, and if the collected temperature data=the lower limit of the temperature interval, a closing signal is output; sensing a cabinet door switch signal, setting the number n of selected temperature data, selecting n temperature data acquired by a temperature sensor after the cabinet door is closed, and constructing the temperature data into a temperature data set according to the acquisition time sequence; If the temperature fluctuation amplitude is more than or equal to the amplitude threshold, removing the temperature data with earliest acquisition time from the temperature data set after acquiring new temperature data, and incorporating the new temperature data to form a new temperature data set; the sliding window algorithm in the S2 is used for weighting and smoothing the temperature data in the temperature data set, wherein the working principle is that weights from large to small are given in sequence according to the time sequence of temperature data acquisition in the temperature data set, and the sum of all the weights is 1; and multiplying each temperature data in the temperature data set by the corresponding weight, and then summing to obtain the weighted and smoothed temperature data.
2. 2. The method of claim 1, wherein the magnitude of the temperature fluctuation is an absolute value of a temperature difference between two adjacent collected temperature data in the temperature data set.
3. 3. The method for temperature regulation of a refrigerator according to claim 2 wherein S3 analyzes the trend of temperature data, senses each temperature data in the temperature data set, compares the sizes of the temperature data, and if each temperature data in the temperature data set is gradually reduced, determines that the trend of temperature data in the temperature data set is a decreasing trend; If each temperature data in the temperature data set is gradually increased, judging that the change trend of the temperature data in the temperature data set is an increasing trend.
4. 4. The method of claim 3, wherein S3 reduces the number of data in constructing the new temperature data set, wherein n is selected according to the set temperature data, S2 constructs the temperature data set for the first time according to the number of selected temperature data, if the trend of temperature data change is decreasing trend at this time, when constructing the new temperature data set for the second time, the number of selected temperature data in the second temperature data set is one less than the number of the first selected temperature data, and the same is repeated; and S3, reducing the upper limit of the temperature interval, namely sensing the upper limit of the temperature interval in S1, and setting an adjustment coefficient, wherein the reduced upper limit of the temperature interval is the upper limit of the temperature interval in S1 multiplied by the adjustment coefficient.
5. 5. The method of claim 3, wherein if S1 determines that the weighted smoothed temperature data=the reduced upper temperature interval limit, S1 outputs a start signal to enable the temperature data in the refrigerator=the temperature interval lower temperature limit, and the temperature data in the refrigerator is the S2 weighted smoothed temperature data.
6. 6. A refrigerated cabinet temperature regulation system for use in a refrigerated cabinet temperature regulation method according to any of claims 1 to 5 comprising a temperature control execution decision module (100), a temperature data processing module (200) and a temperature control strategy optimization module (300), wherein: The temperature control execution decision module (100) senses temperature data and a temperature interval in the refrigerator, adopts a logic judgment method to judge whether a control signal needs to be output, and outputs a starting signal if the acquired temperature data=the upper limit of the temperature interval; The temperature data processing module (200) builds a temperature data set, adopts a sliding window algorithm to carry out weighted smoothing treatment on temperature data in the temperature data set, replaces the temperature data in the temperature control execution decision module (100) with the temperature data, sets a temperature fluctuation amplitude threshold value, and compares the temperature data acquired in the temperature control execution decision module (100) with a temperature interval when the temperature fluctuation amplitude is smaller than the amplitude threshold value; The temperature control strategy optimization module (300) analyzes the change trend of temperature data in the temperature data set, reduces the data quantity in the temperature data set if the trend is a decreasing trend, reduces the upper limit of a temperature interval if the trend is an increasing trend, and outputs a starting signal to enable the temperature data in the refrigerator to be the lower limit of the temperature interval if the temperature control execution decision module (100) judges that the temperature data after the weighted smoothing treatment=the upper limit of the temperature interval after the weighted smoothing treatment, wherein the temperature data in the refrigerator is the temperature data after the weighted smoothing treatment by the temperature data processing module (200).
7. 7. A refrigerated cabinet temperature regulation apparatus comprising a refrigerated cabinet (400) for applying to a refrigerated cabinet temperature regulation method according to any of claims 1 to 5, the refrigerated cabinet (400) being a memory for storing temperature data.

Description

Method, system and equipment for regulating temperature of refrigerated cabinet Technical Field The invention relates to the technical field of energy conservation of refrigerated cabinets, in particular to a method, a system and equipment for regulating the temperature of a refrigerated cabinet. Background In modern living and business systems, the refrigerated cabinet is used as core equipment for guaranteeing safe storage of perishable foods, medicines and high-sensitivity articles, and is deeply integrated into key fields such as home kitchens, super retail, catering supply chains, medical storage, cold chain logistics and the like; Along with the iterative upgrade of electronic information technology, modern refrigerated cabinets are commonly provided with an intelligent electronic temperature control system, the intelligent electronic temperature control system acquires temperature data in the refrigerated cabinet in real time by means of a high-precision thermistor isothermal sensor arranged in the refrigerated cabinet and dynamically compares the temperature data with a target temperature interval set by a user; However, in practical application, the temperature field in the refrigerated cabinet is interfered by door opening, introducing hot air, placing articles for heat dissipation and the like, and the problems of severe fluctuation and uneven distribution exist, namely, on one hand, the operations of door opening, placing new articles for example, can greatly change local temperature in a short time, the instantaneous fluctuation of original temperature data can easily cause frequent start and stop of an evaporator, not only can increase equipment energy consumption and loss, but also can not stably maintain the storage environment temperature, and on the other hand, when the temperature field is uneven, the local high temperature or low temperature can continuously influence the whole temperature control precision if not effectively recognized and treated, and the quality of stored articles (such as medicine failure and food spoilage) is threatened. Disclosure of Invention The invention aims to solve the problems that a temperature field in a refrigerated cabinet is easy to be disturbed by opening a door to enter hot air and heat dissipation of articles to be placed in, and severe fluctuation and uneven distribution exist. The opening of the door and the placing of objects enable the local temperature to change greatly in a short time, the instantaneous fluctuation of the original data easily causes the frequent start and stop of the evaporator, the energy consumption and the loss are increased, and the temperature is difficult to stabilize. In order to achieve the above object, the present invention provides a method for adjusting the temperature of a refrigerator, comprising the steps of: s1, sensing temperature data and temperature intervals in a refrigerated cabinet, and judging whether a control signal needs to be output or not by adopting a logic judgment method; S2, constructing a temperature data set by adopting a sliding window algorithm, carrying out weighted smoothing treatment on the temperature data, replacing the temperature data with the temperature data in the refrigerator, setting a temperature fluctuation range threshold value, and if the temperature fluctuation range is less than the range threshold value, not replacing the temperature fluctuation range; S3, analyzing the temperature data change trend in the temperature data set, if the trend is a decreasing trend, reducing the data quantity when the temperature data set is constructed, and if the trend is an increasing trend, reducing the upper limit of the temperature interval. In the step S1, the logic determination method is that if the collected temperature data=the upper limit of the temperature interval, a start signal is output, and if the collected temperature data=the lower limit of the temperature interval, a close signal is output. The method has the advantages that the temperature rise is restrained in time by a logic judging method, namely, when the acquired temperature data reach the upper limit of a temperature interval, a starting signal is output to start the evaporator, when the acquired temperature data fall to the lower limit of the temperature interval, a closing signal is output to stop the evaporator, excessive refrigeration is avoided, the starting and stopping of the refrigeration system can be accurately controlled according to the temperature boundary, the temperature abnormal fluctuation can be rapidly responded, the stability of the storage environment temperature is maintained, the invalid operation of the refrigerated cabinet can be avoided, the energy consumption and the loss are reduced, and the high-efficiency and reliability of the temperature control of the refrigerated cabinet are ensured. On the basis of the technical scheme, the invention can be improved as follows. The working principl