Energy-saving control system for refrigerator equipment

Abstract

The invention relates to an energy-saving control system for refrigerator equipment, and aims to solve the problem of energy waste of the existing refrigerator equipment in the aspects of illumination, refrigeration, monitoring and the like. The system comprises an illumination energy-saving module, a refrigeration energy-saving module, a monitoring and networking module and a refrigerator interconnection configuration optimization module. The illumination energy-saving module intelligently adjusts an illumination mode according to the external illumination intensity, the human body approaching condition and the cabinet door opening and closing state; the refrigeration energy-saving module intelligently adjusts the refrigeration power according to factors such as the storage volume in the cabinet, the article temperature, the business time and the use peak period; the monitoring and networking module collects internal data of the refrigerator, transmits the data to a user and reminds the user to reasonably place articles; the refrigerator interconnection configuration optimization module collects refrigerator operation data and carries out intelligent calculation, and optimization suggestions of refrigerator use and article placement are provided for users. The energy consumption of the refrigerator is obviously reduced through intelligent control, the operation efficiency is improved, and the intelligent control system has important practical significance and wide application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving of refrigerator equipment, and in particular to an energy-saving control system of refrigerator equipment. Background Art

[0002] In commercial operations, refrigerator equipment such as beverage refrigerators in convenience stores are indispensable facilities. However, traditional refrigerator equipment has many energy waste problems during operation. For example, during the night business hours, if no one buys beverages, the refrigerator's lighting system still maintains full power operation, which not only consumes a lot of electricity, but also has a certain impact on the internal temperature of the refrigerator, increasing the burden on the refrigeration system. At the same time, the temperature control method of the refrigerator is relatively fixed, and it cannot be flexibly and intelligently adjusted according to actual needs, resulting in long-term high-load operation of the refrigeration system, further exacerbating energy waste. In addition, the lack of effective real-time monitoring and networking functions makes it impossible to grasp the operating status of the refrigerator in time, and it is difficult to achieve accurate automatic energy-saving control. Therefore, it is of great practical significance to develop a refrigerator equipment control system that can effectively save energy. Summary of the invention

[0003] The present invention aims to solve the energy waste problem in lighting, refrigeration and monitoring of existing refrigerator equipment, and realize energy-saving operation of refrigerator equipment through an intelligent control system.

[0004] In view of the above problems, the present invention provides an energy-saving control system for refrigerator equipment, which aims to achieve energy-saving operation of the refrigerator equipment through an intelligent control system.

[0005] In a first aspect, the present invention provides a refrigerator equipment energy-saving control system, the system comprising:

[0006] A lighting energy-saving module, used for intelligently adjusting the lighting mode according to the first preset condition combination, wherein the first preset condition combination includes the external light intensity, whether someone approaches the refrigerator, and whether the door is opened to take out items;

[0007] A refrigeration energy-saving module, used for intelligently adjusting the power of the refrigerator according to a second preset condition combination, wherein the second preset condition combination includes the storage volume size in the cabinet, the temperature of the items placed therein, whether it is business hours, and whether it is a peak usage period;

[0008] The monitoring and networking module is used to collect the internal data of the refrigerator, transmit the internal data of the refrigerator to the user, and remind the user to place the items properly;

[0009] The refrigerator interconnection configuration optimization module is used to collect data from multiple refrigerators, integrate the data, and provide users with reasonable suggestions on refrigerator usage and item placement;

[0010] Furthermore, the lighting energy-saving module includes:

[0011] Light detection unit: determines whether the external light intensity exceeds a first threshold value, if so, turns off the lighting, otherwise adjusts the lighting mode to a low light mode;

[0012] Human infrared detection unit: detects human movement signals within a first preset distance from the refrigerator; when the lighting system is in the off state and the human infrared detection unit detects a human movement signal, the lighting mode is adjusted to a low light mode, and after the human movement signal leaves the first preset distance, the lighting system continues to illuminate for a first preset time and then turns off; otherwise, the lighting mode remains unchanged;

[0013] Door switch detection unit: if it detects that the door is open, the lighting mode is adjusted to high brightness mode until the door is closed, otherwise the lighting mode remains unchanged;

[0014] Furthermore, the refrigeration energy-saving module includes:

[0015] Storage volume monitoring unit: monitors the storage volume in the cabinet in real time through the built-in sensor, and automatically adjusts the power of the refrigeration system according to the storage volume. When the storage volume is lower than the first preset volume value, it is adjusted to the third refrigeration power operation; when the storage volume is higher than the second preset volume value, it is adjusted to the first refrigeration power operation; when the storage volume is higher than the first preset volume value and lower than the second preset volume value, it is adjusted to the second refrigeration power operation; specifically, the built-in sensor can be an ultrasonic sensor, a laser ranging sensor or a visual sensor;

[0016] Item temperature monitoring unit: The temperature sensor installed at the inlet of the refrigerator monitors the initial temperature of the items in real time. If the temperature of the items is higher than the current refrigerator temperature, the refrigeration power is increased; if the temperature of the items is lower than the current refrigerator temperature, the refrigeration power is reduced.

[0017] Optionally, the cooling power is divided into three gears, including a first cooling power, a second cooling power and a third cooling power, the cooling powers are all system preset values, the first cooling power is the highest power, the third cooling power is the lowest power, the increasing cooling power is to increase the cooling power by one gear on the basis of the current gear, if it is already the highest gear, it will not be increased, the reducing cooling power is to reduce the cooling power by one gear on the basis of the current gear, if it is already the lowest gear, it will not be reduced;

[0018] Big data analysis unit: collects and analyzes refrigerator usage data, uses big data technology to identify peak and off-peak periods, increases refrigeration power during peak periods, and reduces refrigeration power during off-peak periods;

[0019] Optionally, the refrigerator usage data includes the number of door openings and the frequency of taking out items. The time period is to divide the 24 hours of a day into a time period every two hours, and the system records the number of door openings and the frequency of taking out items in each time period; if the number of door openings of the refrigerator is greater than a first preset number or the frequency of taking out items is higher than the first preset frequency, it is a peak period; if the number of door openings of the refrigerator is less than a second preset number and the frequency of taking out items is lower than the second preset frequency, it is a valley period; otherwise, it is a regular period; the system updates the peak and valley period data once a week;

[0020] Time control unit: set the internal clock, preset business hours and non-business hours, and automatically adjust the cooling power according to peak and trough periods during business hours; during non-business hours, keep the third cooling power running;

[0021] Furthermore, the monitoring and networking module includes:

[0022] Refrigerator monitoring unit: collects and receives the internal data of the refrigerator in real time, analyzes it using computer vision technology, and transmits the internal data of the refrigerator to the user remotely via the Internet;

[0023] User prompting unit: determines the placement status of items during business hours, and if it is detected that the placement of items does not comply with at least one preset placement rule, reminds the user to adjust the placement through the terminal device; when the time remaining before non-business hours is a second preset time, reminds the user to place the items on the lower level;

[0024] Optionally, the preset placement rules include that items must not be located within a second preset distance from the air outlet, the volume of items placed on each layer of the refrigerator must not exceed the preset volume upper limit of the layer, and the volume of items on the upper layer must not exceed the volume of items on the lower layer;

[0025] Furthermore, the refrigerator interconnection configuration optimization module includes:

[0026] Data collection unit: collect the number of refrigerators t, the maximum volume s that the i-th refrigerator can hold items i (1≤i≤t), the average power consumption of the ith refrigerator per day w i (1≤i≤t), count the total volume N of the items in all refrigerators, and keep the volume to the tenth place and discard the unit place;

[0027] Data calculation unit: calculates the minimum power consumption and the refrigerator number to be selected when the minimum power consumption is reached through a preset algorithm, and generates a configuration table of the minimum power consumption and the refrigerator combination number;

[0028] Optionally, the specific functions of the data calculation unit are:

[0029] Transform the problem into a variant of the 0-1 knapsack problem, selecting refrigerators to minimize total power consumption,

[0030] Define the state:

[0031] Let dp[i][j] represent the minimum power consumption in the first i refrigerators when the total volume is j, and j increases by 10 each time;

[0032] Construct the state transfer equation:

[0033] For each freezer i, there are two options: select it or not select it;

[0034] If the i-th freezer is not selected, then dp[i][j] = dp[i-1][j];

[0035] If the i-th freezer is selected, then dp[i][j] = dp[i-1][js i ]+w i , where s i is the maximum volume of the ith freezer, w i is the average power consumption of the ith refrigerator;

[0036] Therefore, dp[i][j] = min(dp[i-1][j], dp[i-1][js i ]+w i );

[0037] initialization:

[0038] dp[0][0] = 0, indicating that when there is no freezer, the power consumption with a total volume of 0 is 0;

[0039] For all j>0, dp[0][j]=∞, which means that when there is no freezer, the power consumption of the total volume greater than 0 is ∞;

[0040] Solution:

[0041] Find dp[t][N], which is the minimum power consumption when the total volume is N in the first t refrigerators;

[0042] Backtrack:

[0043] To find the selected freezer number, backtrack from dp[t][N],

[0044] If dp[i][j] = dp[i-1][j], the i-th refrigerator is not selected.

[0045] If dp[i][j] = dp[i-1][js i ]+w i , then the i-th refrigerator is selected, and update j = js i ;

[0046] Record the selected refrigerator numbers and generate a configuration table of minimum power consumption and refrigerator combination numbers;

[0047] User suggestion unit: makes suggestions to the user according to the configuration table, prompting the user to place the items in the designated refrigerator.

[0048] In a second aspect, the present invention provides an electronic device, characterized in that it includes: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, it implements the various processes of the above-mentioned embodiment of the energy-saving control system for refrigerator equipment and can achieve the same technical effect.

[0049] In a third aspect, the present invention provides a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the various processes of the above-mentioned embodiment of the energy-saving control system for refrigerator equipment are implemented and the same technical effect can be achieved.

[0050] The beneficial effects of the present invention are:

[0051] Through the lighting energy-saving module, the lighting mode is intelligently adjusted according to the external light intensity, human proximity and the door switch status, avoiding the energy waste of the traditional refrigerator still lighting at full power when no one is there, and effectively reducing the energy consumption of the lighting system; the refrigeration energy-saving module intelligently adjusts the refrigeration power according to factors such as the storage volume in the cabinet, the temperature of the items, the business hours and the peak period of use, avoiding the excessive energy consumption caused by the fixed power refrigeration of the traditional refrigerator, especially at night or during low hours, the refrigeration power can be greatly reduced, achieving significant energy saving; the monitoring and networking module monitors the operation status of the refrigerator in real time, reminds users to place items reasonably, optimizes the air circulation inside the refrigerator, further reduces the burden on the refrigeration system, and reduces unnecessary energy consumption; the refrigerator interconnection configuration optimization module issues optimization suggestions for refrigerator selection and item placement to users through intelligent calculation, reducing overall power consumption. The above invention scheme finally realizes the energy-saving use of refrigerator equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a functional module diagram of an energy-saving control system for refrigerator equipment.

[0053] Figure 2 The present invention is a flowchart of the operation of the lighting module of an energy-saving control system for refrigerator equipment.

[0054] Figure 3 This is an operation flow chart of a refrigerator interconnection configuration optimization module of a refrigerator equipment energy-saving control system. DETAILED DESCRIPTION

[0055] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0056] Example 1

[0057] A convenience store has installed five beverage refrigerators, each with a capacity of 100 liters and an average power of 300 watts. These refrigerators are mainly used to store beverages and other goods, and are open from 8 a.m. to 10 p.m. every day. During business hours, the refrigerators are used more frequently, especially between 2 p.m. and 8 p.m., which is the peak time for customers to buy beverages.

[0058] Lighting energy-saving module configuration: Install a light sensor on the front panel of the refrigerator to detect the external light intensity, install a human infrared sensor on the front panel of the refrigerator to detect whether a person is approaching, and install a switch sensor on the door of the refrigerator to detect whether the door is open. Set the light intensity threshold to 500lux. When the external light intensity exceeds 500lux, turn off the refrigerator lighting; when it is lower than 500lux, adjust the lighting mode to low-brightness mode; set the preset distance of human infrared detection to 1 meter. When the lighting system is in the off state and detects human movement signals within 1 meter, adjust the lighting mode to low-brightness mode. When the person leaves the refrigerator within 1 meter, the lighting will be turned off after 10 seconds; when the door is opened, adjust the lighting mode to high-brightness mode until the door is closed.

[0059] Refrigeration energy-saving module configuration:

[0060] A visual sensor is installed inside the refrigerator to monitor the storage volume in real time. A temperature sensor is installed at the inlet of the refrigerator to monitor the initial temperature of the items placed therein. The first preset volume value of the storage volume is set to 30 liters, and the second preset volume value is 80 liters. The refrigeration power is set to three gears: the first refrigeration power is 300 watts, the second refrigeration power is 250 watts, and the third refrigeration power is 200 watts. The first preset number of door opening times is set to 10 times / hour, the first preset frequency of taking things is set to 15 times / hour, the second preset number of times is 3 times / hour, and the second preset frequency is 5 times / hour. The internal clock sets the business hours from 8 am to 10 pm. The refrigeration power is automatically adjusted according to peak and trough periods during business hours; the third refrigeration power is maintained during non-business hours.

[0061] Monitoring and networking module configuration:

[0062] A camera is installed inside the refrigerator to collect real-time data inside the refrigerator, and the data inside the refrigerator is transmitted to the convenience store manager via the Internet. Reasonable placement rules are set: items must not be located within a second preset distance from the air outlet, the volume of items placed on each layer of the refrigerator must not exceed the preset volume upper limit of that layer, and the volume of items on the upper layer must not exceed the volume of items on the lower layer. In this embodiment, the second preset distance is 10 cm, and the preset volume upper limit is 80% of the volume of this layer.

[0063] Lighting energy saving module operation:

[0064] When the external light intensity is high, if the light sensor detects that the light intensity exceeds 500 lux, the refrigerator lighting is turned off. When a person approaches the refrigerator within 1 meter, the human infrared sensor detects the human movement signal and adjusts the lighting mode to low-brightness mode. If the person does not perform subsequent operations on the refrigerator, the lighting will be turned off after the person leaves the refrigerator within 1 meter. When the person opens the refrigerator door, the door switch sensor detects that the door is open and adjusts the lighting mode to high-brightness mode until the door is closed. If the external light intensity is less than 500 lux and the door is not opened, the refrigerator lighting system remains in low-brightness mode.

[0065] Refrigeration energy saving module operation:

[0066] During business hours, the visual sensor monitors the storage volume in the cabinet in real time. When the storage volume is less than 30 liters, the refrigeration system automatically adjusts to the third refrigeration power (200 watts); when the storage volume is greater than 80 liters, the refrigeration system adjusts to the first refrigeration power (300 watts). When an item is placed, the temperature sensor detects the initial temperature of the item placed; if the temperature of the item placed is higher than the current refrigerator temperature, the refrigeration power is increased by one gear; if the temperature of the item placed is lower than the current refrigerator temperature, the refrigeration power is reduced by one gear. The big data analysis unit collects and analyzes the usage data of the refrigerator to identify peak and valley periods. During peak hours (2 pm to 8 pm), the refrigeration power is increased by one gear; during valley hours (8 am to 10 am and 9 pm to 10 pm), the refrigeration power is reduced by one gear. The time control unit automatically adjusts the refrigeration power during business hours according to the internal clock setting; the third refrigeration power is maintained during non-business hours.

[0067] Monitoring and networking module operation:

[0068] A high-definition camera is installed inside the refrigerator to capture images and videos inside the refrigerator in real time. The camera captures photos or video clips inside the refrigerator every 5 minutes. At the same time, the temperature, humidity, lighting status and other data inside the refrigerator are collected through sensors. The collected images, videos and sensor data are transmitted to the cloud server through the Internet. The server stores and backs up the data and provides a data interface for users to access. Users can view the operating status of the refrigerator in real time through mobile applications, computer clients or web pages. The system determines whether the placement of items inside the refrigerator meets the preset placement rules based on the results of computer vision technology analysis, and issues reminders to the user accordingly. In this embodiment, the second preset distance is 10 cm, and the preset volume upper limit is 80% of the volume of this layer, so as to ensure the cooling effect and achieve energy saving. The built-in clock module records the current time in real time to determine whether it is business hours. The business hours are from 8 am to 10 pm, and the non-business hours are from 10 pm to 8 am the next day. In this embodiment, during business hours, if it is detected that an object is 5 cm away from the air outlet, which is less than the second preset distance, the system will send a prompt message to the user through a fixed display screen or a mobile phone application to remind the user to adjust the placement of the items. An example of the prompt message content is: "It is detected that an item on a layer of the refrigerator is blocking the air outlet. Please adjust it in time to ensure the refrigeration effect and energy-saving operation". When the second preset time is 30 minutes away from non-business hours, the system will remind the user to place the items on the lower layer in order to reduce the refrigeration power during non-business hours. An example of the prompt message content is: "There are 30 minutes left before non-business hours. Please place the items on the lower layer to optimize the energy-saving effect". After receiving the prompt message, the user can adjust the placement of the items according to the prompt. The system will monitor the adjusted placement status in real time to ensure that it complies with the preset placement rules. If the user does not respond to the prompt in time, the system will repeat the reminder until the user responds.

[0069] Example 2

[0070] Three beverage refrigerators are installed in a convenience store. The refrigerator interconnection configuration optimization module collects data from the three refrigerators, including the volume and average power of each refrigerator, and uses the system's preset dynamic programming algorithm to calculate the minimum power consumption and the refrigerator number that needs to be selected when the minimum power consumption is reached. Number of refrigerators: Count the total number of refrigerators in the convenience store, which is 3 in this embodiment; refrigerator volume: The maximum volume is 100 liters, 200 liters, and 300 liters respectively; the average power consumption is 50 watts, 100 watts, and 150 watts respectively; total volume of items: Count the total volume of items in all refrigerators, which is 400 liters. The current total volume is 400 liters, and the refrigerators are numbered from 1 to 3. At this time, the dp two-dimensional table is calculated as:

[0071]

[0072] Starting from dp[t][N], i.e. dp[3]

[400] , the goal is to find which refrigerators are selected so that the total volume is 400 liters and the power consumption is minimized, starting from i=3 and j=400,

[0073] 3rd Freezer:

[0074] Currently i=3, j=400,

[0075] Check dp[3]

[400] = 200,

[0076] Check dp[2]

[400] = ∞, indicating that the third freezer is selected.

[0077] Update j = j-s3 = 400-300 = 100, and add freezer number 3 to the selection list;

[0078] Second Freezer:

[0079] Currently i=2, j=100,

[0080] Check dp[2]

[100] = 50,

[0081] Check dp[1]

[100] = 50, which means the second freezer is not selected and j remains unchanged;

[0082] First Freezer:

[0083] Currently i=1,j=100,

[0084] Check dp[1]

[100] = 50,

[0085] Check dp[0]

[100] = ∞, indicating that the first refrigerator is selected, and add refrigerator number 1 to the selection list;

[0086] Generate a table of minimum power consumption and cabinet combination number configurations:

[0087] Minimum power consumption Selected refrigerator combination number 200W No. 1, No. 3

[0088] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A refrigerator equipment energy-saving control system, characterized in that: The system comprises: A lighting energy-saving module, used for intelligently adjusting the refrigerator lighting mode according to a first preset condition combination; A refrigeration energy-saving module, used for intelligently adjusting the refrigeration power of the refrigerator according to a second preset condition combination; Monitoring and networking module, used to collect data from inside the refrigerator, transmit it to the user and remind the user to place items properly; Refrigerator interconnection configuration optimization module, used to collect and integrate refrigerator data and make reasonable suggestions; The lighting energy-saving module comprises: Light detection unit, adjusting the lighting mode according to the external light intensity; Human infrared detection unit, adjusting the lighting mode according to human movement signals; The cabinet door switch detection unit adjusts the lighting mode according to the cabinet door switch status; The refrigeration energy-saving module comprises: Storage volume monitoring unit, adjusting the cooling power according to the storage volume; The item temperature monitoring unit adjusts the cooling power according to the item temperature; Big data analysis unit, which collects and analyzes freezer usage data, identifies peak and off-peak periods and adjusts refrigeration power; Time control unit, which sets the internal clock and adjusts the cooling power according to whether it is business hours; The monitoring and networking module includes: The refrigerator monitoring unit collects and analyzes the internal data of the refrigerator in real time and transmits it to the user; User prompt unit, reminding users to place items properly; The refrigerator interconnection configuration optimization module includes: A data collection unit, which collects freezer data; A data calculation unit generates a configuration table of minimum power consumption and refrigerator combination numbers through a preset algorithm; The user suggestion unit prompts the user to place items in a designated refrigerator according to the configuration table.

2. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The first preset condition combination includes external light intensity, whether someone approaches the refrigerator, and whether the door is opened to take out items; The light detection unit determines whether the external light intensity exceeds a first threshold value, and if so, turns off the lighting, otherwise, adjusts the lighting mode to a low light mode; The human infrared detection unit detects a human movement signal within a first preset distance from the refrigerator. When the lighting system is in an off state and the human infrared detection unit detects a human movement signal, the lighting mode is adjusted to a low light mode. After the human movement signal leaves the first preset distance, the lighting system continues to illuminate for a first preset time and then turns off, otherwise the lighting mode remains unchanged; When the cabinet door switch detection unit detects that the cabinet door is opened, the lighting mode is adjusted to the high-brightness mode until the cabinet door is closed, otherwise the lighting mode remains unchanged.

3. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The second preset condition combination includes the storage volume of the cabinet, the temperature of the items placed in the cabinet, whether it is business hours, and whether it is a peak usage period; The storage volume monitoring unit monitors the storage volume size in the cabinet in real time through a built-in sensor, and automatically adjusts the power of the refrigeration system according to the storage volume size. When the storage volume is lower than the first preset volume value, it is adjusted to the third refrigeration power operation; when the storage volume is higher than the second preset volume value, it is adjusted to the first refrigeration power operation; when the storage volume is higher than the first preset volume value and lower than the second preset volume value, it is adjusted to the second refrigeration power operation; The item temperature monitoring unit monitors the initial temperature of the items in real time through a temperature sensor arranged at the inlet of the refrigerator. If the temperature of the items in is higher than the current refrigerator temperature, the refrigeration power is increased; if the temperature of the items in is lower than the current refrigerator temperature, the refrigeration power is reduced; The big data analysis unit collects and analyzes the usage data of the refrigerator, identifies the peak and valley periods by using big data technology, increases the refrigeration power during the peak period, and reduces the refrigeration power during the valley period; The time control unit is provided with an internal clock, and presets business hours and non-business hours. During business hours, the cooling power is automatically adjusted according to the peak and valley periods; during non-business hours, the third cooling power is maintained.

4. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The cooling power is divided into three gears, including a first cooling power, a second cooling power and a third cooling power. The cooling powers are all system preset values. The first cooling power is the highest power, and the third cooling power is the lowest power. Increasing the cooling power means increasing the cooling power by one gear on the basis of the current gear. If it is already the highest gear, it will not be increased. Reducing the cooling power means reducing the cooling power by one gear on the basis of the current gear. If it is already the lowest gear, it will not be reduced.

5. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The refrigerator usage data includes the number of door openings and the frequency of taking out items. The time period is to divide the 24 hours of a day into a time period every two hours. The system records the number of door openings and the frequency of taking out items in each time period. If the number of door openings of the refrigerator is greater than the first preset number or the frequency of taking out items is higher than the first preset frequency, it is a peak period; if the number of door openings of the refrigerator is less than the second preset number and the frequency of taking out items is lower than the second preset frequency, it is a valley period. Otherwise, it is a regular period; the system updates the peak and trough period data according to the preset cycle.

6. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The user prompting unit determines the placement status of the items during business hours, and if it is detected that the placement of the items does not comply with at least one preset placement rule, reminds the user to adjust the placement through the terminal device; when the time remaining before the non-business hours is a second preset time, reminds the user to place the items on the lower layer; The preset placement rules include that items must not be located within a second preset distance from the air outlet, the volume of items placed on each layer of the refrigerator must not exceed the preset volume upper limit of that layer, and the volume of items on the upper layer must not exceed the volume of items on the lower layer.

7. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The data collection unit collects the number of refrigerators t, the maximum volume s of the i-th refrigerator that can hold items i (1≤i≤t), the average power consumption of the ith refrigerator per day w i (1≤i≤t), count the total volume N of the items in all refrigerators, and keep the volume to the tenth place and discard the ones place.

8. The energy-saving control system for refrigerator equipment according to claim 1, characterized in that: The specific functions of the data calculation unit are: The problem is transformed into a variant of the 0-1 knapsack problem, where refrigerators are selected to minimize total power consumption. Define the state: Let dp[i][j] represent the minimum power consumption in the first i refrigerators when the total volume is j, and j increases by 10 each time; Construct the state transfer equation: For each freezer i, there are two options: select it or not select it; If the i-th freezer is not selected, then dp[i][j] = dp[i-1][j]; If the i-th freezer is selected, then dp[i][j] = dp[i-1][js i ]+w i , where s i is the maximum volume of the ith freezer, w i is the average power consumption of the ith refrigerator; Therefore, dp[i][j] = min(dp[i - 1][j], dp[i - 1][j - s i + w i ); initialization: dp[0][0] = 0, indicating that when there is no freezer, the power consumption with a total volume of 0 is 0; For all j>0, dp[0][j]=∞, which means that when there is no freezer, the power consumption of the total volume greater than 0 is ∞; Solution: Find dp[t][N], which is the minimum power consumption when the total volume is N in the first t refrigerators; Backtrack: To find the selected freezer number, backtrack from dp[t][N], If dp[i][j] = dp[i-1][j], the i-th refrigerator is not selected. If dp[i][j] = dp[i-1][js i ]+w i , then the i-th refrigerator is selected, and update j = js i ; The selected refrigerator number is recorded, and a configuration table of minimum power consumption and refrigerator combination number is generated.

9. An electronic device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, each process of an embodiment of an energy-saving control system for refrigerator equipment as described in any one of claims 1 to 8 is implemented, and the same technical effect can be achieved.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the various processes of an embodiment of an energy-saving control system for refrigerator equipment described in any one of claims 1 to 8 are implemented, and the same technical effect can be achieved.

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