A temperature control system and method for constant temperature stacking warehouse

Abstract

The present invention belongs to the technical field of testing equipment, and specifically relates to a device for testing the strength characteristics of solid materials by mechanical stress. The temperature control system of the constant temperature stacking bin comprises: a bin body, a control component, a temperature acquisition component, a temperature adjustment component and a pressure adjustment component. The present invention adjusts the pressure in the test chamber to different set pressures, collects temperature data at a bin opening, obtains a corresponding table of temperature change and duration under different set pressures and constructs a control model. When placing a packaging container in the test chamber for a stacking test, the pressure in the test chamber is adjusted to a target pressure, so that the air in the test chamber is slowly pushed outward to avoid external air from rushing into the test chamber quickly. The temperature change in the test chamber will not exceed the target temperature difference within the set opening time of the bin door, so as to ensure the test temperature required for the stacking test, avoid bringing impurities into the test chamber to pollute the test environment, and there is no active airflow intervention during the stacking process, so that the weights are stably and accurately placed on the packaging container.

Description

Technical Field

[0001] The invention belongs to the technical field of testing equipment, and in particular relates to a device for testing the strength characteristics of solid materials by using mechanical stress. Background Art

[0002] Plastic barrels used for packaging hazardous goods need to be tested before they leave the factory and are inspected using GB18191-2008 "Plastic barrels used for packaging hazardous goods as packaging containers". The plastic barrels used for packaging hazardous goods need to be placed in a test chamber for stacking tests under certain temperature conditions. At the same time, a specific test environment needs to be maintained in the test chamber. The test temperature and test environment will affect the normal operation of the manipulator and reduce its service life. Currently, it is impossible to install a manipulator in the test chamber. During the stacking test, the existing test chamber needs to open the chamber door to push the weights into the test chamber and stack them on the plastic barrels used for packaging hazardous goods. However, since the external temperature of the test chamber is lower than the internal temperature of the test chamber, the air outside the test chamber quickly rushes into the test chamber, which on the one hand destroys the test temperature required for the stacking test and affects the normal operation of the stacking test. On the other hand, it will also bring external impurities into the test chamber and pollute the test environment in the test chamber.

[0003] Traditional test chambers will have air wall equipment installed at the chamber door. When the chamber door is opened, the air wall equipment will form an air wall at the chamber door. However, the air wall is formed by counter-airflow, which will destroy the stability of the test environment on the one hand, and form airflow in the test chamber on the other hand. The stacking test requires the weights to be stacked on plastic barrels used for packaging dangerous goods. The placement of the weights is subject to regulatory requirements, and airflow may affect the placement of the weights.

[0004] Therefore, it is urgent to develop a new constant temperature stacking warehouse temperature control system and control method to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a temperature control system and a control method for a constant temperature stacking bin.

[0006] In order to solve the above technical problems, the present invention provides a temperature control system for a constant temperature stacking warehouse, which comprises: a warehouse body, a control component, a temperature collection component, a temperature adjustment component and a pressure adjustment component; wherein a test chamber is arranged in the warehouse body, a warehouse opening for installing a warehouse door is opened on the warehouse body, and the warehouse opening is connected with the test chamber; the temperature collection component, the temperature adjustment component and the pressure adjustment component are electrically connected with the control component, the temperature collection component is arranged at the warehouse opening, and the temperature adjustment component and the pressure adjustment component are connected with the test chamber; the temperature adjustment component adjusts the temperature in the test chamber to the test temperature; the control component is connected with the test chamber to the test chamber to the test temperature; the temperature collection component is connected with the control component ... chamber to the test temperature; the temperature collection component is connected with the control component to the test chamber to the test chamber to the test temperature; the temperature collection component is connected with the control component to the test chamber to the test chamber to the test temperature; the temperature collection component is connected with the control component to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the test chamber to the The pressure regulating component adjusts the pressure in the test chamber to different set pressures. When the door is opened, the temperature collecting component collects temperature data at the door opening, so that the control component obtains a corresponding table of temperature change and duration under different set pressures to construct a regulation model. When a packaging container is placed in the test chamber for a stacking test, the control component obtains the set opening time of the door. The control component controls the pressure regulating component to adjust the pressure in the test chamber to the target pressure according to the set opening time of the door and the regulation model, so that the temperature change at the door opening does not exceed the target temperature difference after the door is opened and within the set opening time of the door.

[0007] Specifically, the control component sets an initial set pressure, and increases and decreases the initial set pressure to set different set pressures.

[0008] Specifically, the control component obtains the size data of the port opening, and sets the initial set pressure according to the size data of the port opening and the test temperature.

[0009] Specifically, the control component adjusts the pressure in the test chamber to the initial set pressure through the pressure regulating component. When the chamber door is opened, the temperature acquisition component collects temperature data at the chamber opening, so that the control component obtains a corresponding table between temperature change and duration under the initial set pressure to construct an initial control model; the control component sets different set pressures by increasing and decreasing the initial set pressure. When the chamber door is opened, the temperature acquisition component collects temperature data at the chamber opening, so that the control component obtains a corresponding table between temperature change and duration under different set pressures to optimize the initial control model.

[0010] Specifically, the door opening time setting is input into the control model to output the corresponding target pressure.

[0011] Specifically, the target pressure is greater than the pressure outside the test chamber.

[0012] Specifically, the control component includes: a PID controller; the temperature acquisition component, the temperature adjustment component, and the pressure adjustment component are electrically connected to the PID controller; the PID controller collects temperature data at the hatch through the temperature acquisition component; the PID controller adjusts the temperature in the test chamber to different set temperatures through the temperature adjustment component; the PID controller adjusts the pressure in the test chamber to different set pressures through the pressure adjustment component.

[0013] Specifically, the temperature acquisition component includes: at least two temperature sensors; each of the temperature sensors is arranged at the warehouse opening, and each of the temperature sensors is electrically connected to the PID controller; each of the temperature sensors collects temperature data at the corresponding position at the warehouse opening, and sends it to the PID controller.

[0014] Specifically, the temperature adjustment component includes: a plurality of heaters and a plurality of refrigerators; each of the heaters and refrigerators is respectively arranged in the test chamber, and each of the heaters and refrigerators is electrically connected to the PID controller; the PID controller adjusts the temperature in the test chamber to different set temperatures through each heater or each refrigerator.

[0015] Specifically, the pressure regulating assembly includes: a plurality of pressure pumps; each of the pressure pumps is connected to a test chamber, and each of the pressure pumps is electrically connected to a PID controller; the PID controller adjusts the pressure in the test chamber to different set pressures through each pressure pump.

[0016] On the other hand, the present invention provides a control method using the temperature control system of the constant temperature stacking bin as mentioned above, which includes: adjusting the temperature in the test chamber to the test temperature through the temperature adjustment component; the control component adjusts the pressure in the test chamber to different set pressures through the pressure adjustment component, and when the bin door is opened, the temperature acquisition component collects temperature data at the bin opening, so that the control component obtains a corresponding table of temperature change and duration under different set pressures to construct a control model; when a packaging container is placed in the test chamber for a stacking test, the control component obtains the set opening time of the bin door, and the control component controls the pressure adjustment component to adjust the pressure in the test chamber to the target pressure according to the set opening time of the bin door and the control model, so that the temperature change at the bin opening after the bin door is opened and within the set opening time of the bin door does not exceed the target temperature difference.

[0017] The beneficial effects of the present invention are that the temperature in the test chamber can be flexibly adjusted through the temperature regulating component, and the control component can adjust the pressure in the test chamber to different set pressures through the pressure regulating component. When the chamber door is opened, the temperature acquisition component collects temperature data at the chamber opening, so as to obtain a corresponding table of temperature change and duration under different set pressures and construct a control model. When a packaging container is placed in the test chamber for a stacking test, the control component controls the pressure regulating component to adjust the pressure in the test chamber to a target pressure according to the chamber door set opening time and the control model, so that the air in the test chamber is slowly pushed outward to avoid external air from rushing into the test chamber quickly. On the one hand, it can be achieved that the temperature change in the test chamber will not exceed the target temperature difference within the chamber door set opening time, thereby ensuring the test temperature required for the stacking test. On the other hand, it can avoid bringing impurities into the test chamber to pollute the test environment, and there is no active airflow intervention during the stacking process, so that the weights can be stably and accurately placed on the packaging container, thereby ensuring the overall stability and accuracy of the stacking test.

[0018] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practicing the present invention.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a principle block diagram of the temperature control system of the constant temperature stacking warehouse of the present invention;

[0022] Figure 2 It is a circuit structure block diagram of the constant temperature stacking bin temperature control system of the present invention;

[0023] Figure 3 It is a schematic diagram of the air flow direction when the test chamber of the present invention is at the target pressure and the chamber door is opened;

[0024] Figure 4 is a work flow chart for setting different set pressures of the present invention;

[0025] Figure 5 It is a workflow diagram for constructing a control model of the present invention;

[0026] Figure 6 It is a work flow chart of the present invention for calculating the target pressure required in the test chamber. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1, in this embodiment, as Figures 1 to 6 As shown, this embodiment provides a temperature control system for a constant temperature stacking warehouse, which includes: a warehouse body, a control component, a temperature collection component, a temperature adjustment component and a pressure adjustment component; a test chamber is arranged in the warehouse body, a warehouse opening for installing a warehouse door is opened on the warehouse body, and the warehouse opening is connected to the test chamber; the temperature collection component, the temperature adjustment component, the pressure adjustment component are electrically connected to the control component, the temperature collection component is arranged at the warehouse opening, and the temperature adjustment component and the pressure adjustment component are connected to the test chamber; the temperature adjustment component adjusts the temperature in the test chamber to the test temperature; the control component adjusts the temperature in the test chamber to the test temperature through the pressure The regulating component adjusts the pressure in the test chamber to different set pressures. When the door is opened, the temperature collecting component collects temperature data at the door opening, so that the control component obtains a corresponding table of temperature change and duration under different set pressures to construct a regulation model. When a packaging container is placed in the test chamber for a stacking test, the control component obtains the set opening time of the door. The control component controls the pressure regulating component to adjust the pressure in the test chamber to the target pressure according to the set opening time of the door and the regulation model, so that the temperature change at the door opening does not exceed the target temperature difference after the door is opened and within the set opening time of the door.

[0029] In this embodiment, this embodiment can flexibly adjust the temperature in the test chamber through the temperature adjustment component, and the control component can adjust the pressure in the test chamber to different set pressures through the pressure adjustment component. When the door is opened, the temperature acquisition component collects temperature data at the door opening to obtain a corresponding table of temperature change and duration under different set pressures and build a control model. When placing packaging containers in the test chamber for stacking test, the control component controls the pressure adjustment component to adjust the pressure in the test chamber to the target pressure according to the set opening time of the door and the control model, so that the air in the test chamber is slowly pushed out to avoid external air from rushing into the test chamber quickly. On the one hand, it can be achieved that the temperature change in the test chamber will not exceed the target temperature difference within the set opening time of the door, thereby ensuring the test temperature required for the stacking test. On the other hand, it can avoid bringing impurities into the test chamber to pollute the test environment, and there is no active airflow intervention during the stacking process, so that the weights can be stably and accurately placed on the packaging containers, thereby ensuring the overall stability and accuracy of the stacking test.

[0030] In this embodiment, the control component sets an initial set pressure, and gradually increases and decreases the initial set pressure to set different set pressures.

[0031] Specifically, due to the different environments in which the warehouse is located, each time the warehouse is moved to a different environment, it needs to be debugged in accordance with the environment in which the warehouse is located. Preliminary calculation of the initial set pressure can reduce the number of debugging times and improve debugging efficiency, that is, reduce debugging costs.

[0032] In this embodiment, the control component obtains the size data of the port opening, and sets the initial set pressure according to the size data of the port opening and the test temperature.

[0033] Specifically, the cross-sectional area of ​​the porthole can be obtained through the dimensional data of the porthole, and the volume of air near the porthole can be obtained through the cross-sectional area of ​​the porthole, and the mass of the air near the porthole can be calculated through the relationship between density, volume and mass. Before the pressure in the test chamber is adjusted by the pressure regulating component, the air pressure is positively correlated with the air mass and temperature. A large number of porthole dimensional data and test temperatures are used as samples to train a learning model about the porthole dimensional data, test temperature and initial set pressure, and then the initial set pressure can be accurately set through the porthole dimensional data and test temperature.

[0034] In this embodiment, the control component adjusts the pressure in the test chamber to the initial set pressure through the pressure regulating component. When the chamber door is opened, the temperature acquisition component collects temperature data at the chamber opening, so that the control component obtains a corresponding table between temperature change and duration under the initial set pressure to construct an initial control model; the control component sets different set pressures by increasing and decreasing the initial set pressure. When the chamber door is opened, the temperature acquisition component collects temperature data at the chamber opening, so that the control component obtains a corresponding table between temperature change and duration under different set pressures to optimize the initial control model.

[0035] Specifically, when it is necessary to construct a control model, first, the initial set pressure is calculated, and the pressure regulating component is controlled by the control component to adjust the pressure in the test chamber to the initial set pressure, and then the chamber door is opened, and the temperature acquisition component collects the temperature data at the chamber opening in real time. The control component can construct a corresponding table between the temperature change and the duration under the initial set pressure based on the sampled data, so as to realize the construction of the initial control model; then, the control component sets a first set pressure based on the initial set pressure, and the pressure regulating component is controlled by the control component to adjust the pressure in the test chamber to the first set pressure, and then the chamber door is opened, and the temperature acquisition component collects the temperature data at the chamber opening in real time. The control component can construct a corresponding table between the temperature change and the duration under the first set pressure based on the sampled data, so as to realize the optimization of the initial control model; the above steps are repeated to finally obtain a high-precision control model.

[0036] In this embodiment, the door opening time setting is input into the control model to output the corresponding target pressure.

[0037] Specifically, after the chamber body is officially put into use, when it is necessary to open the chamber door before stacking the weights on the packaging container in the test chamber, the required operation time (the chamber door is set to open time) is input into the control model, and the corresponding target pressure can be output. After the pressure in the test chamber is adjusted to the target pressure through the control component controlling the pressure regulating component, the chamber door is opened, and the weights are stacked on the packaging container.

[0038] In this embodiment, the target pressure is greater than the pressure outside the test chamber.

[0039] Specifically, see Figure 3 When the target pressure is greater than the pressure outside the test chamber, the external air flows toward the test chamber, while the air inside the test chamber flows toward the outside, which can achieve the goal of slowly pushing the air out of the test chamber and preventing the external air from directly entering the test chamber for mixing, that is, avoiding the risk of rapid temperature drop in the test chamber. At the same time, the air flows out from the inside to the outside rather than from the outside to the inside, which can prevent the external air from bringing impurities into the test chamber to pollute the test environment.

[0040] In this embodiment, the control component includes: a PID controller; the temperature acquisition component, the temperature adjustment component, and the pressure adjustment component are electrically connected to the PID controller; the PID controller collects temperature data at the port through the temperature acquisition component; the PID controller adjusts the temperature in the test chamber to different set temperatures through the temperature adjustment component; the PID controller adjusts the pressure in the test chamber to different set pressures through the pressure adjustment component.

[0041] Specifically, the PID controller cooperates with the temperature regulating component to implement feedback regulation of the temperature in the test chamber, and the PID controller cooperates with the pressure regulating component to implement feedback regulation of the pressure in the test chamber.

[0042] In this embodiment, the temperature acquisition component includes: at least two temperature sensors; each of the temperature sensors is arranged at the warehouse opening, and each of the temperature sensors is electrically connected to the PID controller; each of the temperature sensors collects temperature data at the corresponding position at the warehouse opening, and sends it to the PID controller.

[0043] Specifically, setting up multiple temperature sensors can, on the one hand, improve the accuracy of temperature collection; on the other hand, air does not move regularly, and setting up temperature sensors at different positions can collect temperature changes as soon as they occur, and can also play a role in optimizing the control model.

[0044] In this embodiment, the temperature adjustment component includes: a plurality of heaters and a plurality of refrigerators; each of the heaters and refrigerators is respectively arranged in the test chamber, and each of the heaters and refrigerators is electrically connected to the PID controller; the PID controller adjusts the temperature in the test chamber to different set temperatures through each heater or each refrigerator.

[0045] Specifically, the PID controller is heated by each heater, and the PID controller is cooled by each refrigerator.

[0046] In this embodiment, the pressure regulating assembly includes: a plurality of pressure pumps; each of the pressure pumps is connected to the test chamber, and each of the pressure pumps is electrically connected to a PID controller; the PID controller adjusts the pressure in the test chamber to different set pressures through each pressure pump.

[0047] Example 2. Based on Example 1, this example provides a control method using a constant temperature stacking bin temperature control system as provided in Example 1, which includes: adjusting the temperature in the test chamber to the test temperature through the temperature control component; the control component adjusts the pressure in the test chamber to different set pressures through the pressure control component, and when the bin door is opened, the temperature acquisition component collects temperature data at the bin opening, so that the control component obtains a corresponding table of temperature change and duration under different set pressures to construct a control model; when a packaging container is placed in the test chamber for a stacking test, the control component obtains the bin door set opening time, and the control component controls the pressure regulation component to adjust the pressure in the test chamber to the target pressure according to the bin door set opening time and the control model, so that the temperature change at the bin opening after the bin door is opened and within the bin door set opening time does not exceed the target temperature difference.

[0048] To summarize, the present invention can flexibly adjust the temperature in the test chamber through the temperature regulating component, and the control component can adjust the pressure in the test chamber to different set pressures through the pressure regulating component. When the door is opened, the temperature acquisition component collects temperature data at the chamber opening to obtain a corresponding table of temperature change and duration under different set pressures and construct a control model. When a packaging container is placed in the test chamber for a stacking test, the control component controls the pressure regulating component to adjust the pressure in the test chamber to a target pressure according to the set opening time of the door and the control model, so that the air in the test chamber is slowly pushed out to avoid rapid influx of external air into the test chamber. On the one hand, it can be achieved that the temperature change in the test chamber does not exceed the target temperature difference within the set opening time of the door, thereby ensuring the test temperature required for the stacking test. On the other hand, it can avoid bringing impurities into the test chamber to pollute the test environment, and there is no active airflow intervention during the stacking process, so that the weights can be stably and accurately placed on the packaging container, thereby ensuring the overall stability and accuracy of the stacking test.

[0049] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0055] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A constant temperature stacking warehouse temperature control system, characterized in that: include: Warehouse body, control component, temperature collection component, temperature adjustment component and pressure adjustment component; in A test cavity is arranged in the warehouse body, a warehouse opening for installing a warehouse door is opened on the warehouse body, and the warehouse opening is communicated with the test cavity; The temperature collection component, the temperature adjustment component, the pressure adjustment component and the control component are electrically connected, the temperature collection component is arranged at the hatch, and the temperature adjustment component and the pressure adjustment component are connected to the test chamber; The temperature regulating component adjusts the temperature in the test chamber to the test temperature; The control component adjusts the pressure in the test chamber to different set pressures through the pressure regulating component. When the chamber door is opened, the temperature collecting component collects temperature data at the chamber opening, so that the control component obtains a corresponding table of temperature change and duration under different set pressures to construct a control model; When a packaging container is placed in the test chamber for a stacking test, the control component obtains the set opening time of the warehouse door, and controls the pressure regulating component to adjust the pressure in the test chamber to the target pressure according to the set opening time of the warehouse door and the regulation model, so that the temperature change at the warehouse opening after the warehouse door is opened and within the set opening time of the warehouse door does not exceed the target temperature difference.

2. The constant temperature stacking bin temperature control system according to claim 1, characterized in that: The control component sets an initial set pressure, and increases and decreases the initial set pressure to set different set pressures.

3. The constant temperature stacking bin temperature control system according to claim 2, characterized in that: The control component obtains the size data of the port opening, and sets the initial set pressure according to the size data of the port opening and the test temperature.

4. The constant temperature stacking bin temperature control system according to claim 2, characterized in that: The control component adjusts the pressure in the test chamber to the initial set pressure through the pressure regulating component. When the chamber door is opened, the temperature collecting component collects the temperature data at the chamber opening, so that the control component obtains the corresponding table of temperature change and duration under the initial set pressure to construct an initial control model; The control component sets different set pressures by increasing and decreasing the initial set pressure. When the door is opened, the temperature collection component collects temperature data at the door opening, so that the control component obtains a corresponding table of temperature changes and durations under different set pressures to optimize the initial control model.

5. The constant temperature stacking bin temperature control system according to claim 4, characterized in that: The door opening time is input into the control model to output the corresponding target pressure.

6. The constant temperature stacking bin temperature control system according to claim 1, characterized in that: The target pressure is greater than the pressure outside the test chamber.

7. The constant temperature stacking bin temperature control system according to claim 1, characterized in that: The control component includes: a PID controller; The temperature acquisition component, the temperature adjustment component, and the pressure adjustment component are electrically connected to the PID controller; The PID controller collects the temperature data at the port through the temperature collection component; The PID controller adjusts the temperature in the test chamber to different set temperatures through a temperature adjustment component; The PID controller adjusts the pressure in the test chamber to different set pressures through a pressure regulating component.

8. The constant temperature stacking bin temperature control system according to claim 7, characterized in that: The temperature acquisition component includes: at least two temperature sensors; Each of the temperature sensors is arranged at the hatch, and each of the temperature sensors is electrically connected to the PID controller; Each of the temperature sensors collects temperature data at a corresponding position at the port opening and sends the data to the PID controller.

9. The constant temperature stacking bin temperature control system according to claim 7, characterized in that: The temperature adjustment assembly includes: a plurality of heaters and a plurality of refrigerators; Each of the heaters and refrigerators is arranged in the test chamber, and each of the heaters and refrigerators is electrically connected to the PID controller; The PID controller adjusts the temperature in the test chamber to different set temperatures through each heater or each refrigerator.

10. The constant temperature stacking bin temperature control system according to claim 7, characterized in that: The pressure regulating assembly includes: a plurality of pressure pumps; Each of the pressure pumps is communicated with the test chamber, and each of the pressure pumps is electrically connected to the PID controller; The PID controller adjusts the pressure in the test chamber to different set pressures through each pressure pump.

11. A control method using the constant temperature stacking bin temperature control system according to any one of claims 1 to 10, characterized in that: include: Adjust the temperature in the test chamber to the test temperature through the temperature regulating component; The control component adjusts the pressure in the test chamber to different set pressures through the pressure regulating component. When the chamber door is opened, the temperature collecting component collects the temperature data at the chamber opening, so that the control component obtains the corresponding table of temperature change and duration under different set pressures to build a control model; When packaging containers are placed in the test chamber for a stacking test, the control component obtains the set opening time of the door, and controls the pressure regulating component to adjust the pressure in the test chamber to the target pressure based on the set opening time of the door and the control model, so that the temperature change at the door opening does not exceed the target temperature difference after the door is opened and within the set opening time of the door.

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