Cold storage electric heat tracing control method and system

Abstract

The invention relates to the technical field of electric heat tracing control, and discloses a cold storage electric heat tracing control method and system.Heating control is independently carried out on each control area through subarea control, electric heat tracing parts can be effectively operated with extremely low energy consumption, and in the using process of a cold storage, the electric heat tracing parts can be effectively heated. The temperature and the humidity change in a large range when the goods change greatly, part of the control area is separated from the low-temperature area and the humidity is low, and under the control of the method, the control area can operate for a very small time or even does not operate, so that the purpose of saving energy is achieved. In addition, the influence of the control area which is heated firstly on the control area which is heated later is considered while zone control is carried out, more accurate control is carried out on the control area which is heated later in a mode of the first frosting coefficient and the second frosting coefficient, and energy consumption is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric tracing control, and particularly to a method and system for controlling electric tracing in a cold storage. Background Art

[0002] During the operation of a cold storage, frosting and icing are likely to occur on parts such as cold storage doors, walls, and floors, which affect the normal use of the cold storage and pose potential safety hazards. Traditional defrosting methods mainly rely on manual cleaning at regular intervals, with low efficiency and difficulty in thorough cleaning. As an effective heat preservation and anti-freezing measure, electric tracing belts have been widely used in fields such as pipeline heat preservation, but there are still some problems in their application in cold storages, for example:

[0003] Traditional electric tracing belts usually adopt constant power output or simple control based on temperature sensors, and cannot automatically adjust the power according to the changes in the cold storage environment, resulting in energy waste. Moreover, the traditional electric tracing belt control system is simple and cannot achieve precise temperature control and zoning control, easily resulting in local overheating or insufficient heating. Especially during the large-scale loading and unloading of goods in the cold storage, the goods themselves may emit and absorb humidity. In this case, the critical frosting temperatures in different areas of the cold storage are different, and the existing electric tracing cannot recognize these differences and make corresponding reactions.

[0004] In view of this, the present invention proposes a method and system for controlling electric tracing in a cold storage, which can more effectively control the electric tracing during the operation of the cold storage through zoning control and automatic adjustment. Summary of the Invention

[0005] In order to more effectively control the electric tracing during the operation of the cold storage, the present application provides a method and system for controlling electric tracing in a cold storage.

[0006] In the first aspect, the present application provides a method for controlling electric tracing in a cold storage, adopting the following technical solution:

[0007] A method for controlling electric tracing in a cold storage divides the control surface into at least one control area, and an independent electric tracing component is arranged in each control area;

[0008] An operating cycle is set, and at the beginning of each operating cycle, each control area is heated to an initial temperature by the electric tracing component and then the operation of the electric tracing component is stopped;

[0009] During each operating cycle, image information of the control area is obtained through monitoring, and based on the image information, it is judged whether frosting occurs in the control area;

[0010] For a control area where frosting occurs, determine whether there is a control area where frosting has occurred. If not, obtain the first frosting coefficient based on the temperature change curve of the control area during the process from the shutdown of the electric tracing element to the occurrence of frosting. If so, obtain the second frosting coefficient based on the temperature change curve of the control area during the process from the shutdown of the electric tracing element to the occurrence of frosting and the frosting position.

[0011] Set the operating temperature based on the first frosting coefficient and the second frosting coefficient, and control the corresponding electric tracing element to operate at the operating temperature.

[0012] Through the above technical solution: a control method for the electric tracing element in a cold storage is provided. Specifically, the present invention controls the heating independently for each control area through zoning control, and can effectively operate the electric tracing element with extremely low energy consumption. During the use of the cold storage, a large change in goods will cause a large range of changes in temperature and humidity. Some control areas will deviate from the low-temperature area and have low humidity. Under the control of the present invention, such control areas will operate for a very short time or even not operate, so as to achieve the purpose of energy saving. In addition, when the present invention performs zoning control, it also takes into account the influence of the control area that is heated first on the control area that is heated later, and controls the area that is heated later more precisely in the form of the first frosting coefficient and the second frosting coefficient, further reducing the energy consumption.

[0013] Optionally, the process of determining whether frosting occurs based on the image information includes:

[0014] Perform binary processing on the uploaded image information of the control area and obtain the ratio of the number of white pixels to the total number of pixels in the processed image;

[0015] Set a critical threshold for the frosting phenomenon. If the obtained ratio is not less than the critical threshold, it is determined that frosting occurs; otherwise, it is determined that no frosting occurs.

[0016] Optionally, the process of obtaining the first frosting coefficient includes:

[0017] Based on the current cold storage operation data, set a standard change curve for the current control area. Then, through the formula:

[0018]

[0019] Calculate and obtain the first frosting coefficient F1, where ε1 and ε2 are preset first weight coefficient and second weight coefficient, is the time taken for the temperature change curve of the current control area from the shutdown of the electric tracing element to the process of the control area temperature dropping to a stable value, is the duration during which the temperature of the current control area remains stable from the shutdown of the electric tracing element to the occurrence of frosting, is the time taken for the corresponding standard change curve from the moment the electric tracing component stops operating until the temperature in the control area drops to a stable value. is the duration during which the temperature in the control area remains at a stable value from the moment the electric tracing component stops operating until the frosting phenomenon appears in the standard change curve.

[0020] Through the above technical solution, the first weight coefficient and the second weight coefficient are obtained based on the entropy method, and are calculated and obtained respectively using, as indicators, the time taken for the temperature change curve of the current control area from the moment the electric tracing component stops operating until the temperature in the control area drops to a stable value, and the duration during which the temperature in the control area remains at a stable value from the moment the electric tracing component in the current control area stops operating until the frosting phenomenon appears.

[0021] Optionally, the process of obtaining the second frosting coefficient includes:

[0022] Construct a circumscribed circle based on the white pixels in the processed image, and use the center of the circumscribed circle as the frosting position;

[0023] Calculate the distance from the frosting position to the center of the control area where the frosting phenomenon has already occurred;

[0024] Based on this distance and the temperature change curve of the corresponding control area, calculate and obtain the second frosting coefficient.

[0025] The process of calculating and obtaining the second frosting coefficient includes:

[0026] Through the formula:

[0027]

[0028] Obtain the second frosting coefficient F2, where ω1 and ω2 are respectively the preset first specific gravity coefficient and second specific gravity coefficient, N is the number of control areas where the frosting phenomenon has occurred before the frosting phenomenon appears in the current control area, d i is the distance from the frosting position to the center of the i-th control area where the frosting phenomenon has occurred, and d0 is the preset standard distance.

[0029] Through the above technical solution, the processes of obtaining the first frosting coefficient and the second frosting coefficient are provided. By constructing the corresponding index relationship, the present invention quantifies the weights of the indexes related to the first frosting coefficient and the second frosting coefficient, thereby generating a mapping relationship, facilitating the construction of a quantitative relationship between the operating temperature and the critical temperature of frosting measured under the standard state, and thus achieving the purpose of efficient automatic control during use.

[0030] Optionally, the process of obtaining the first specific gravity coefficient and the second specific gravity coefficient includes:

[0031] Obtain the first frosting coefficient of this control area, and the distance with the points on the boundary of this control area as the frosting positions;

[0032] Construct the distance of each frosting position and the corresponding first frosting coefficient as two index data into an index group, and use the entropy method for the two index data in an index group to obtain the weight combination of the weight values of the two index data respectively;

[0033] Select a weight combination with the largest weight value of the index data corresponding to the distance, and use the weight values of this weight combination as the first proportion coefficient and the second proportion coefficient, where the weight value of the index data corresponding to the second frosting coefficient is the first proportion coefficient, and the weight value of the index data corresponding to the distance is the second proportion coefficient.

[0034] Through the above technical solution: the process of obtaining the first proportion coefficient and the second proportion coefficient is provided. The first proportion coefficient and the second proportion coefficient of the present invention are also calculated based on the entropy method. The special thing is that multiple different combinations of the first proportion coefficient and the second proportion coefficient are obtained through different frosting positions. Among multiple combinations, select the one with the largest second proportion coefficient as the final result. The advantage is that the influence of the control area that starts heating first on the control area that starts heating later is maximized, thereby reducing the power consumption of the area where the electric tracing element starts heating later to the greatest extent. And in the subsequent startup process, the operating temperature of the area where the electric tracing element starts heating later is gradually increased in a cyclic manner, so as to maintain the frost-free state of the area where the electric tracing element starts heating later.

[0035] Optionally, the process of setting the operating temperature includes:

[0036] Through the formula:

[0037]

[0038] Obtain the operating temperature T m , where T0 is the critical temperature of frosting measured corresponding to the standard change curve, F0 is the standard value of the preset first proportion coefficient, g1(T m -T0) is a compensation function of T m -T0. At different operating temperatures, T m and T0, as well as F1 and F0 are all different non-linear functional relationships. Through a large amount of historical data, two functional relationships can be constructed in a coordinate system and segmented and fitted into multiple linear functions. What the compensation function g1 outputs is the ratio of two different linear functions in the same segmented state.

[0039] Optionally, if the control area operating at the operating temperature frosts again during the operation process, obtain the corresponding operating temperature again with the temperature change curve during the first frosting phenomenon, so as to achieve repeated iterative operation.

[0040] Optionally, after obtaining the operating temperature, the electric tracing element in the control area first heats the control area to the defrosting temperature, and then keeps the control area at the operating temperature in a proportional-integral-derivative control manner. The defrosting temperature is a preset value, set between 1°C and 5°C, and the proportional-integral-derivative control can be implemented through a built-in controller.

[0041] In a second aspect, the present application provides a cold storage electric tracing control system, which adopts the following technical solutions, including:

[0042] An electric tracing module, the electric tracing module includes at least one independently controllable electric tracing element;

[0043] A cycle management module, the cycle management module is set with an operating cycle and stops the operation of the electric tracing element after heating each control area to the initial temperature at the beginning of each operating cycle;

[0044] A data acquisition module, the data acquisition module is used to acquire the image data and temperature change data of the control area;

[0045] A frosting analysis module, the frosting analysis module determines whether there is a control area where frosting has occurred for the control area where frosting occurs. If not, the first frosting coefficient is obtained based on the temperature change curve of the control area during the process from the stop of the electric tracing element operation to the occurrence of frosting. If so, the second frosting coefficient is obtained based on the temperature change curve of the control area during the process from the stop of the electric tracing element operation to the occurrence of frosting and the frosting position;

[0046] A control module, the control module sets the operating temperature based on the first frosting coefficient and the second frosting coefficient and controls the corresponding electric tracing element to operate at the operating temperature.

[0047] In summary, the present application includes at least one of the following beneficial technical effects:

[0048] The present invention controls each control area independently through zone control, and can effectively operate the electric tracing element with extremely low energy consumption. During the use of the cold storage, a large change in goods will cause a large range of changes in temperature and humidity. Some control areas will deviate from the low-temperature area and have low humidity. Under the control of the present invention, such control areas will operate for a very short time or even not operate, so as to achieve the purpose of energy saving. In addition, when the present invention performs zone control, it also takes into account the influence of the control area that is heated first on the control area that is heated later, and more precisely controls the area that is heated later in the form of the first frosting coefficient and the second frosting coefficient, further reducing energy consumption.

[0049] By constructing the corresponding index relationships, the present invention quantifies the weights of the indicators related to the first frosting coefficient and the second frosting coefficient, thereby generating a mapping relationship, facilitating the construction of a quantitative relationship between the operating temperature and the critical frosting temperature measured under standard conditions, and achieving the purpose of efficient automatic control during use.

[0050] The first specific gravity coefficient and the second specific gravity coefficient of the present invention are also calculated based on the entropy method. The special feature is that multiple different combinations of the first specific gravity coefficient and the second specific gravity coefficient are obtained through different frosting positions. Among these multiple combinations, the one with the largest second specific gravity coefficient is selected as the final result. The advantage is that it maximizes the influence of the control area that starts heating first on the subsequent control areas for heating, thereby significantly reducing the power consumption of the areas where the electric tracing elements are started later for heating. And during the subsequent startup process, the operating temperature of the areas where the electric tracing elements are started later for heating is gradually increased in a cyclic manner to maintain a frost-free state in these areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a flowchart of the control method steps of the present invention.

[0052] Figure 2 is a schematic diagram of the composition of the control system module of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] The following details the embodiments of the present application, and the examples of the embodiments are shown in the drawings.

[0054] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0055] The embodiments of the present application disclose a method for controlling electric tracing in a cold storage, referring to Figure 1 , including:

[0056] S100. Divide the control surface into at least one control area, and set independent electric tracing elements in each control area, where the control surface is the ground, wall surface, or cold storage door that needs to be provided with electric tracing for defrosting;

[0057] S200. Set the operating cycle, and at the beginning of each operating cycle, heat each control area to the initial temperature through the electric tracing element and then stop the operation of the electric tracing element;

[0058] S300. During each operating cycle, obtain the image information of the control area through monitoring and judge whether frosting occurs in the control area based on the image information;

[0059] S400. For the control area where frosting occurs, judge whether there is a control area where frosting has occurred, and obtain the first frosting coefficient and the second frosting coefficient according to the judgment result. The judgment result includes: if not, obtain the first frosting coefficient based on the temperature change curve of the control area during the process from the stop of the electric tracing element operation to the occurrence of frosting; if so, obtain the second frosting coefficient based on the temperature change curve of the control area and the frosting position during the process from the stop of the electric tracing element operation to the occurrence of frosting;

[0060] S500. Set the operating temperature based on the first frosting coefficient and the second frosting coefficient and control the corresponding electric tracing element to operate at the operating temperature.

[0061] In this embodiment, a control method for the electric tracing element in the cold storage is provided. Specifically, the present invention controls each control area independently through zoning control, and can effectively operate the electric tracing element with extremely low energy consumption. During the use of the cold storage, a large change in goods will cause a large range of changes in temperature and humidity. Some control areas will deviate from the low-temperature area and have low humidity. Under the control of the present invention, such control areas will operate for a very short time or even not operate, so as to achieve the purpose of energy saving. In addition, when the present invention performs zoning control, it also takes into account the influence of the control area that is heated first on the control area that is heated later, and controls the area that is heated later more precisely in the form of the first frosting coefficient and the second frosting coefficient, further reducing the energy consumption.

[0062] The process of judging whether frosting occurs based on the image information includes:

[0063] S310. Binarize the uploaded image information of the control area and obtain the ratio of the number of white pixels to the total number of pixels in the processed image;

[0064] S320. Set a critical threshold for the frosting phenomenon. If the obtained ratio is not less than the critical threshold, it is judged that frosting occurs; otherwise, it is judged that no frosting occurs.

[0065] The process of obtaining the first frosting coefficient includes:

[0066] S410. Set a standard change curve for the current control area based on the current cold storage operation data, and then, through the formula:

[0067]

[0068] Calculate and obtain the first frosting coefficient F1, where ε1 and ε2 are preset first weight coefficient and second weight coefficient, is the time taken for the temperature change curve of the current control area from the stop of the electric tracing element to the drop of the control area temperature to the stable value, is the duration during which the temperature of the control area remains at the stable value before the frosting phenomenon occurs after the electric tracing element in the current control area stops running, is the time taken for the corresponding standard change curve from the stop of the electric tracing element to the drop of the control area temperature to the stable value, is the duration during which the temperature of the control area remains at the stable value before the frosting phenomenon occurs after the stop of the electric tracing element in the standard change curve. The first weight coefficient and the second weight coefficient are obtained based on the entropy value method, and are calculated and obtained respectively with the time taken for the temperature change curve of the current control area from the stop of the electric tracing element to the drop of the control area temperature to the stable value and the duration during which the temperature of the control area remains at the stable value before the frosting phenomenon occurs after the stop of the electric tracing element in the current control area as indicators.

[0069] The process of obtaining the second frosting coefficient includes:

[0070] S420. Construct a circumscribed circle based on the white pixels in the processed image, and use the center of the circumscribed circle as the frosting position;

[0071] S430. Calculate the distance from the frosting position to the center of the control area where the frosting phenomenon has occurred;

[0072] S440. Calculate and obtain the second frosting coefficient based on the distance and the temperature change curve of the corresponding control area.

[0073] S441. The process of calculating and obtaining the second frosting coefficient includes:

[0074] Through the formula:

[0075]

[0076] Obtain the second frosting coefficient F2, where ω1 and ω2 are respectively the preset first specific gravity coefficient and second specific gravity coefficient, N is the number of control areas where the frosting phenomenon has occurred before the frosting phenomenon occurs in the current control area, d i is the distance from the frosting position to the center of the i-th control area where the frosting phenomenon has occurred, and d0 is the preset standard distance.

[0077] In this embodiment, a process for obtaining a first frosting coefficient and a second frosting coefficient is provided. By constructing a corresponding index relationship, the present invention quantifies the weights of the indexes related to the first frosting coefficient and the second frosting coefficient, thereby generating a mapping relationship, facilitating the construction of a quantitative relationship between the operating temperature and the critical frosting temperature measured under the standard state, and achieving the purpose of efficient automatic control during use.

[0078] The process for obtaining the first specific gravity coefficient and the second specific gravity coefficient includes:

[0079] Obtain the first frosting coefficient of the control area and the distance with the points on the boundary of the control area as the frosting positions;

[0080] Take the distance of each frosting position and the corresponding first frosting coefficient as two index data to construct an index group, and use the entropy method for the two index data in an index group to obtain the weight combination of the weight values of the two index data respectively;

[0081] Select one weight combination with the largest weight value of the index data corresponding to the distance, and use the weight value of this weight combination as the first specific gravity coefficient and the second specific gravity coefficient. Among them, the weight value of the index data corresponding to the second frosting coefficient is the first specific gravity coefficient, and the weight value of the index data corresponding to the distance is the second specific gravity coefficient.

[0082] In this embodiment, a process for obtaining the first specific gravity coefficient and the second specific gravity coefficient is provided. The first specific gravity coefficient and the second specific gravity coefficient of the present invention are also calculated based on the entropy method. The special feature is that multiple different combinations of the first specific gravity coefficient and the second specific gravity coefficient are obtained through different frosting positions. Among the multiple combinations, select the one with the largest second specific gravity coefficient as the final result. The advantage is that it maximizes the influence of the control area that starts heating first on the control area that starts heating later, thereby reducing the power consumption of the area where the electric tracing element starts heating later to the greatest extent. And during the subsequent startup process, the operating temperature of the area where the electric tracing element starts heating later is gradually increased in a cyclic manner to maintain the frost-free state of the area where the electric tracing element starts heating later.

[0083] The process of setting the operating temperature includes:

[0084] Through the formula:

[0085]

[0086] Obtain the operating temperature T m , where T0 is the critical frosting temperature measured corresponding to the standard change curve, F0 is the standard value of the preset first specific gravity coefficient, g1(T m -T0) is a compensation function of T m -T0, and at different operating temperatures, Tm Both T1 and T0, as well as F1 and F0, are different non-linear functional relationships. Through a large amount of historical data, two functional relationships can be constructed within a coordinate system and segmented and fitted into multiple linear functions. The compensation function g1 outputs the ratio of two different linear functions in the same segmented state.

[0087] If frosting occurs again during the operation of the control area operating at the operating temperature, the corresponding operating temperature is re-obtained based on the temperature change curve during the first occurrence of frosting to achieve repeated iterative operation.

[0088] After the electric tracing element of the control area obtains the operating temperature, it first heats the control area to the defrosting temperature, and then constantly controls the control area to maintain the operating temperature in a proportional-integral-derivative control manner. The defrosting temperature is a preset value set between 1°C and 5°C, and the proportional-integral-derivative control can be implemented through a built-in controller.

[0089] Second aspect, referring to Figure 2 , the embodiment of the present application also discloses a cold storage electric tracing control system, adopting the following technical solutions, including:

[0090] An electric tracing module, the electric tracing module includes at least one independently controllable electric tracing element;

[0091] A cycle management module, the cycle management module sets an operating cycle and stops the operation of the electric tracing element after heating each control area to the initial temperature at the beginning of each operating cycle;

[0092] A data acquisition module, the data acquisition module is used to acquire the image data and temperature change data of the control area;

[0093] A frosting analysis module, for the control area where frosting occurs, the frosting analysis module determines whether there is a control area where frosting has occurred. If not, the first frosting coefficient is obtained based on the temperature change curve of the control area from the stop of the electric tracing element operation to the occurrence of frosting. If so, the second frosting coefficient is obtained based on the temperature change curve of the control area from the stop of the electric tracing element operation to the occurrence of frosting and the frosting position;

[0094] A control module, the control module sets the operating temperature based on the first frosting coefficient and the second frosting coefficient and controls the corresponding electric tracing element to operate at the operating temperature.

[0095] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A method for controlling electric tracing in a cold storage, characterized in that, It includes the following steps: Divide the control surface into at least one control area, and set independent electric tracing elements in each control area; Set an operation cycle, and at the beginning of each operation cycle, heat each control area to the initial temperature through the electric tracing elements and then stop the operation of the electric tracing elements; During each operation cycle, obtain the image information of the control area through monitoring and judge whether frosting occurs in the control area based on the image information; For the control area where frosting occurs, judge whether there is a control area where frosting has occurred. If not, obtain the first frosting coefficient based on the temperature change curve of the control area during the process from the stop of the electric tracing element to the occurrence of frosting. If so, obtain the second frosting coefficient based on the temperature change curve of the control area and the frosting position during the process from the stop of the electric tracing element to the occurrence of frosting; Set the operation temperature based on the first frosting coefficient and the second frosting coefficient, and control the corresponding electric tracing elements to operate at the operation temperature.

2. The electric tracing control method for cold storage according to claim 1, wherein The process of judging whether frosting occurs based on the image information includes: Perform binary processing on the uploaded image information of the control area and obtain the ratio value of the number of white pixels in the processed image to the total number of pixels; Set a critical threshold for the frosting phenomenon. If the obtained ratio value is not less than the critical threshold, it is judged that frosting occurs, otherwise it is judged that no frosting occurs.

3. The cold storage electric tracing control method according to claim 1, characterized in that The process of obtaining the first frosting coefficient includes: Set a standard change curve for the current control area based on the current cold storage operation data, and then, through the formula: Calculate and obtain the first frosting coefficient F1, where ε1 and ε2 are preset first and second weight coefficients, is the time taken for the temperature change curve of the current control area from the stop of the electric tracing component to the drop of the control area temperature to the stable value, is the duration during which the temperature of the control area remains at the stable value before the frosting phenomenon occurs after the stop of the electric tracing component in the current control area, is the time taken for the corresponding standard change curve from the stop of the electric tracing component to the drop of the control area temperature to the stable value, is the duration during which the temperature of the control area remains at the stable value before the frosting phenomenon occurs after the stop of the electric tracing component in the standard change curve.

4. The cold storage electric tracing control method according to claim 2, wherein The process of obtaining the second frosting coefficient includes: Construct a circumscribed circle based on the white pixels in the processed image, and use the center of the circumscribed circle as the frosting position; Calculate the distance from the frosting position to the center of the control area where frosting has occurred; Calculate and obtain the second frosting coefficient based on the distance and the temperature change curve of the corresponding control area.

5. The cold storage electric tracing control method according to claim 4, wherein The process of calculating and obtaining the second frosting coefficient includes: Through the formula: Obtain the second frosting coefficient F2, where ω1 and ω2 are respectively the preset first specific gravity coefficient and second specific gravity coefficient, N is the number of control regions where frosting phenomena have occurred before frosting occurs in the current control region, and d i is the distance from the frosting position to the center of the i-th control region where frosting phenomena have occurred, and d0 is the preset standard distance.

6. The cold storage electric tracing control method according to claim 5, wherein The process of obtaining the first specific gravity coefficient and the second specific gravity coefficient includes: Obtain the first frosting coefficient of the control area and the distance with the point on the boundary of the control area as the frosting position; Take the distance of each frosting position and the corresponding first frosting coefficient as two index data to construct an index group, and use the entropy method to obtain the weight combination of the weight values of the two index data for the two index data in an index group; Select a weight combination with the largest weight value of the index data corresponding to the distance, and use the weight value of the weight combination as the first specific gravity coefficient and the second specific gravity coefficient.

7. The cold storage electric tracing control method according to claim 1, wherein The process of setting the operation temperature includes: Through the formula: Obtain the operating temperature T m , where T0 is the critical temperature of frosting measured corresponding to the standard change curve, F0 is the standard value of the preset first specific gravity coefficient, g1(T m -T0) is a compensation function with T m -T0.

8. The cold storage electric tracing control method according to claim 3, characterized in that If the control area operating at the operation temperature frosts again during the operation, obtain the corresponding operation temperature again based on the temperature change curve during the first occurrence of frosting.

9. The cold storage electric tracing control method according to claim 1, characterized in that After obtaining the operation temperature, the electric tracing element of the control area first heats the control area to the defrosting temperature, and then constantly controls the control area to maintain the operation temperature in a proportional integral differential control manner.

10. A cold storage electric tracing control system, characterized in that, Applied to the cold storage electric tracing control method as described in claims 1-9, it includes: An electric tracing module, the electric tracing module includes at least one independently controllable electric tracing element; A cycle management module, which is set with an operating cycle and stops the operation of the electric tracing element after heating each control area to the initial temperature at the beginning of each operating cycle; A data acquisition module, which is used to acquire the image data and temperature change data of the control area; A frosting analysis module, which, for the control area where frosting occurs, determines whether there is a control area where frosting has occurred. If not, it obtains the first frosting coefficient based on the temperature change curve of the control area during the process from the stop of the electric tracing element operation to the occurrence of frosting. If so, it obtains the second frosting coefficient based on the temperature change curve of the control area and the frosting position during the process from the stop of the electric tracing element operation to the occurrence of frosting; A control module, which sets the operating temperature based on the first frosting coefficient and the second frosting coefficient and controls the corresponding electric tracing element to operate at the operating temperature.

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