Portable climate simulation type test box

Abstract

The invention relates to the technical field of climate simulation type test boxes, and discloses a portable climate simulation type test box which comprises an electric control box body with an opening in the front side, and an electric control box cover is rotationally installed on the front side of the electric control box body; the system also comprises a power supply, a circuit breaker, a transformer, a type test system, a PLC controller and a collector. According to the invention, all electric devices are integrated in the same box body, the structure is compact, the integration degree is high, the convenient effect is realized, the operation power of the type test system can be monitored in real time in the test process, the power in the test process can be subjected to precise closed-loop regulation and control according to the monitoring data, the test compensation and result correction can be realized, and the test efficiency is improved. According to the invention, the test precision and stability are improved, the effects of multi-dimensional control and closed-loop feedback are realized, the operation condition of the whole device can be monitored and controlled, and the operation safety and reliability of the whole device are improved.

Description

Technical Field

[0001] This invention relates to the field of climate simulation type test chamber technology, and more particularly to a portable climate simulation type test chamber. Background Technology

[0002] The main function of climate simulation type test chambers is to simulate various climatic environmental conditions for reliability testing, environmental adaptability testing, or type testing of products or materials. They are widely used in industrial product design verification, quality inspection, and material research and development. Currently, most commonly used climate test chambers are fixed devices, which are large in size, complex to install, and inconvenient to move, making it difficult to meet the needs of on-site testing or portable applications. Moreover, most traditional test equipment lacks flexible power control and multi-dimensional data acquisition functions, making it difficult to achieve closed-loop control of test data, energy efficiency assessment, and multi-source comparison, thus failing to meet the increasingly complex testing needs of modern products. To solve the above problems, this application proposes a portable climate simulation type test chamber. Summary of the Invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a portable climate simulation test chamber.

[0004] The portable climate simulation test chamber proposed in this invention includes an electrical control box with an opening on the front, and an electrical control box cover is rotatably mounted on the front of the electrical control box. It also includes: power supply, circuit breaker, transformer, type test system, PLC controller and data acquisition unit; The circuit breaker is connected to the power supply and the transformer. The PLC controller is connected to the data acquisition unit and the type test system through a communication interface. The data acquisition unit is connected to the transformer and the type test system through a communication interface. The data acquisition unit has a built-in Internet of Things module. The rear inner wall of the electrical control box is equipped with guide rails, terminal blocks and wire troughs. The circuit breaker is installed on the guide rails and the wire troughs are located below the terminal blocks. The data acquisition unit, transformer and overcurrent protector are all installed on the rear inner wall of the electrical control box. The PLC controller is fixedly connected to the rear side of the electrical control box cover. The type test system includes an overcurrent protector, a power regulation output module, a heating element, a humidifying element, a cooling element, and a dehumidifying element. The overcurrent protector is connected to the power regulation output module and the heating element.

[0005] Preferably, the data acquisition unit includes an ambient temperature and humidity sensor, an electrical parameter data acquisition unit, a test temperature and humidity sensor, and a power sensor. The ambient temperature and humidity sensor is installed on the outside of the electrical control box to record external environmental conditions as a basis for comparison and compensation. The test temperature and humidity sensor is installed inside the electrical control box to measure the temperature and humidity inside the box in real time for precise control and recording of test data. The electrical parameter data acquisition unit is used to collect voltage, current, active power, and power factor data of the entire type test system and feed them back to the PLC controller as a basis for regulation. The power sensor is used to collect power data of components within the type test system in real time and feed them back to the PLC controller.

[0006] Preferably, the heating element, humidifying element, cooling element, and dehumidifying element work together to achieve precise adjustment of environmental conditions.

[0007] Preferably, the circuit breaker is used for power outage protection in the event of a fault; The overcurrent protector is used to quickly cut off power when the current is too high, to prevent equipment damage and ensure safety.

[0008] Preferably, the power regulation output module is used to adjust the output power according to control commands to drive the components inside the type test system. Its specific operating logic steps are as follows: S101: The power regulation output module receives control commands from the PLC controller 7 via the 485 communication interface. The control commands include: target power, voltage, current, regulation time, and output channel information. S102: The power regulation output module parses the received instructions through internal control logic and extracts the regulation target value, which includes the heating and cooling power corresponding to the target temperature and humidity. S103: The power regulation output module reads its own output status parameters in real time, including the current output voltage, current, and power, and obtains external feedback data from the power sensor and electrical parameter data acquisition unit to form an input-output comparison. S104: Compares the current power output value with the target power value to determine if the deviation exceeds the limit. If the deviation is within the allowable range, maintains the current output; otherwise, enters the adjustment process. During the comparison process, it uses... The sign of the deviation indicates whether the current demand is for heating (ΔT>0) or cooling (ΔT<0), and the control intensity is determined based on the magnitude of the deviation. S105: Employs a PID closed-loop control algorithm to regulate the output voltage and current, gradually bringing the values ​​closer to the target values. The mathematical expression used is: ; Where k is the current sampling period, T is the sampling period time, u(k) is the control output at the kth sampling time, e(k) is the current error, and e(k-1) is the previous error; S106: After reaching the target power, it enters the maintenance mode and monitors the external feedback value in real time. When the power demand fluctuates due to changes in temperature and humidity, it automatically fine-tunes the output to adapt to the target control. S107: Monitors the output status for overload, overtemperature, and short circuit faults. If any abnormality is detected, it immediately feeds back to the PLC controller, which then controls the circuit breaker to perform power-off protection. S108: Sends key parameters during the adjustment process to the PLC controller for test recording. These key parameters include target value, actual value, adjustment time, and electrical parameters.

[0009] Preferably, the PLC controller has an information display screen and an operation interface on its surface. The PLC controller is either a touch-screen PLC controller or an industrial control computer, used to coordinate the actions of sensors and adjustment modules and control the test process. Its specific logical steps are as follows: S201: After the tester inputs the test parameters on the operation interface, the PLC controller reads the set test parameters, which include the target temperature, humidity, test duration and control mode. S202: The PLC controller periodically collects and tests data from the temperature and humidity sensor, the ambient temperature and humidity sensor, the power sensor, and the electrical parameter acquisition device. The data from the temperature and humidity sensor is the real-time temperature and humidity value inside the chamber. The data from the ambient temperature and humidity sensor is the reference temperature and humidity of the external environment. The data from the power sensor is the output power and current of the current power regulation module. The data from the electrical parameter acquisition device is the voltage, current, active power, and power factor. S203: Compare the current temperature and humidity with the target values, and calculate the error. The system determines whether heating, cooling, humidification, or dehumidification is needed based on the error, and decides on the control method based on the error range. S204: Calculate the output control value based on the error magnitude and control strategy. The control value includes output power and voltage. S205: Outputs control signals to the power regulation output module to control the power regulation output module to start or stop the heater, chiller, fan, and humidifier; S206: Phased control is implemented according to the test time, stage, and mode: Start-up stage → heating and humidity increase; Stabilization stage → constant temperature and humidity; Cooling stage → natural recovery or cooling. S207: The PLC controller continuously monitors the system status for abnormalities, including overcurrent, overvoltage, abnormal power, excessive temperature, communication interruption, sensor failure, and power failure. If an abnormality is detected, the system will immediately stop or reduce power operation. S208: Records the temperature, humidity, and electrical parameter test process data into the PLC controller's internal memory.

[0010] Preferably, the transformer includes a current transformer and a voltage transformer. The transformer is used to collect the current and voltage in the circuit and convert the high voltage or high current signal in the circuit into a low voltage and low current signal within a safe range. Its current transformer utilizes the principle of magnetic field coupling to convert the large primary current I1 into a small secondary current I2. The formula used is: Where N1 is the number of turns in the primary winding and N2 is the number of turns in the secondary winding; The voltage transformer uses inductive coupling to reduce the high voltage V1 to the low voltage V2. The formula used is: .

[0011] Compared with existing technologies, the beneficial effects of this invention are: By integrating all electrical components into a single enclosure, the structure is compact and highly integrated, making it suitable for field deployment and rapid relocation, thus solving the problems of large size and immobility of traditional testing equipment. By integrating a power sensor, electrical parameter data acquisition unit, transformer, overcurrent protection circuit and power regulation output module, the device can monitor key indicators such as operating power, current and voltage of the entire device in real time, and perform intelligent control based on the parameters, thereby improving the safety and reliability of the entire device operation. By combining a PLC controller, a power regulation output module, and a data acquisition unit, the operating power of the type test system can be monitored in real time. Based on the monitoring data, the power during the test process can be precisely controlled in a closed loop. This enables test compensation and result correction, improves test accuracy and stability, and achieves the effects of multi-dimensional control and closed-loop feedback. By setting up terminal blocks, multiple climate simulation test chambers can be connected in parallel, providing convenience for testing; This invention integrates all electrical components into a single enclosure, resulting in a compact structure, high integration, and convenient operation. It also enables real-time monitoring of the operating power of the type test system during testing and allows for precise closed-loop control of the power based on the monitoring data. This facilitates test compensation and result correction, improving test accuracy and stability, achieving multi-dimensional control and closed-loop feedback, and monitoring and controlling the operation of the entire device, thus enhancing its safety and reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the portable climate simulation test chamber proposed in this invention; Figure 2 This is a block diagram of the portable climate simulation test chamber proposed in this invention; Figure 3 This is a block diagram of the data collector in the portable climate simulation test chamber proposed in this invention.

[0013] In the diagram: 1. Electrical control box cover; 2. Electrical control box body; 3. Guide rail; 4. Circuit breaker; 5. Terminal block; 6. Cable tray; 7. PLC controller; 8. Data acquisition unit; 9. Transformer; 10. Overcurrent protector. Detailed Implementation

[0014] The present invention will be further explained below with reference to specific embodiments. Example

[0015] Reference Figure 1-3 This embodiment proposes a portable climate simulation test chamber, including an electrical control box 2 with an opening on the front, and an electrical control box cover 1 rotatably mounted on the front of the electrical control box 2; It also includes: power supply, circuit breaker 4, transformer 9, type test system, PLC controller 7 and data acquisition unit 8. The type test system includes overcurrent protector 10, power regulation output module, heating element, humidifying element, cooling element and dehumidifying element. Overcurrent protector 10 is connected to power regulation output module and heating element. Heating element, humidifying element, cooling element and dehumidifying element work together to achieve precise adjustment of environmental conditions. Overcurrent protector 10 is used to quickly cut off power when the current is too high to prevent equipment damage and ensure safety. Circuit breaker 4 is connected to the power supply and is used for power outage protection in case of fault. Circuit breaker 4 is connected to power supply and transformer 9. PLC controller 7 is connected to data acquisition device 8 and type test system through 485 communication interface. Data acquisition device 8 is connected to transformer 9 and type test system through 485 communication interface. Data acquisition device 8 has built-in Internet of Things module, which can be remotely controlled. Transformer 9 includes a current transformer and a voltage transformer. Transformer 9 is used to collect the current and voltage in the circuit and convert the high voltage or high current signal in the circuit into a low voltage and low current signal within a safe range. Its current transformer utilizes the principle of magnetic field coupling to convert the large primary current I1 into a small secondary current I2. The formula used is: Where N1 is the number of turns in the primary winding and N2 is the number of turns in the secondary winding; The voltage transformer uses inductive coupling to reduce the high voltage V1 to the low voltage V2. The formula used is: ; The rear inner wall of the electrical control box 2 is equipped with a guide rail 3, a terminal block 5, and a wire trough 6. The circuit breaker 4 is installed on the guide rail 3, and the wire trough 6 is located below the terminal block 5. The data acquisition unit 8, the transformer 9, and the overcurrent protector 10 are all installed on the rear inner wall of the electrical control box 2. The PLC controller 7 is fixedly connected to the rear side of the electrical control box cover 1. Through the arrangement of the terminal block 5, multiple climate simulation test chambers can be connected in parallel, providing convenience for the test. The data acquisition unit 8 includes an ambient temperature and humidity sensor, an electrical parameter data acquisition unit, a test temperature and humidity sensor, and a power sensor. The ambient temperature and humidity sensor is installed on the outside of the electrical control box 2 to record external environmental conditions for comparison and compensation. The test temperature and humidity sensor is installed inside the electrical control box 2 to measure the temperature and humidity inside the box in real time for precise control and recording of test data. The electrical parameter data acquisition unit is used to collect voltage, current, active power, and power factor data of the entire type test system and feeds them back to the PLC controller 7 as a basis for regulation. The power sensor is used to collect power data of components within the type test system in real time and feeds it back to the PLC controller 7. The power regulation output module is used to adjust the output power according to control commands to drive the internal components of the type test system. Its specific operating logic steps are as follows: S101: The power regulation output module receives control commands from the PLC controller 7 via the 485 communication interface. The control commands include: target power, voltage, current, regulation time, and output channel information. S102: The power regulation output module parses the received instructions through internal control logic and extracts the regulation target value, which includes the heating and cooling power corresponding to the target temperature and humidity. S103: The power regulation output module reads its own output status parameters in real time, including the current output voltage, current, and power, and obtains external feedback data from the power sensor and electrical parameter data acquisition unit to form an input-output comparison. S104: Compares the current power output value with the target power value to determine if the deviation exceeds the limit. If the deviation is within the allowable range, maintains the current output; otherwise, enters the adjustment process. During the comparison process, it uses... The sign of the deviation indicates whether the current demand is for heating (ΔT > 0) or cooling (ΔT < 0), and the control intensity is determined based on the magnitude of the deviation. S105: Employs a PID closed-loop control algorithm to regulate the output voltage and current, gradually bringing the values ​​closer to the target values. The mathematical expression used is: ; Where k is the current sampling period, T is the sampling period time, u(k) is the control output at the kth sampling time, e(k) is the current error, and e(k-1) is the previous error; S106: After reaching the target power, it enters the maintenance mode and monitors the external feedback value in real time. When the power demand fluctuates due to changes in temperature and humidity, it automatically fine-tunes the output to adapt to the target control. S107: Monitor the output status for overload, overtemperature, or short circuit faults. If any abnormality is detected, immediately send feedback to PLC controller 7, which will then control circuit breaker 4 for power-off protection. S108: Sends key parameters during the adjustment process to PLC controller 7 for test recording. The key parameters include target value, actual value, adjustment time, and electrical parameters. The PLC controller 7 has an information display screen and an operation interface. The PLC controller 7 is a type of PLC controller with a touch screen or an industrial control computer, used to coordinate the actions of sensors and adjustment modules and control the test process. Its specific logic steps are as follows: S201: After the tester inputs the test parameters on the operation interface, the PLC controller 7 reads the set test parameters, which include the target temperature, humidity, test duration and control mode. S202: PLC controller 7 periodically collects data from the test temperature and humidity sensor, the ambient temperature and humidity sensor, the power sensor, and the electrical parameter acquisition device. The test temperature and humidity sensor data is the real-time temperature and humidity value inside the chamber. The ambient temperature and humidity sensor data is the reference temperature and humidity of the external environment. The power sensor data is the output power and current of the current power regulation module. The electrical parameter acquisition device data is the voltage, current, active power, and power factor. S106: After reaching the target power, it enters the maintenance mode and monitors the external feedback value in real time. When the power demand fluctuates due to changes in temperature and humidity, it automatically fine-tunes the output to adapt to the target control. S107: Monitor the output status for overload, overtemperature, or short circuit faults. If any abnormality is detected, immediately send feedback to PLC controller 7, which will then control circuit breaker 4 for power-off protection. S108: Sends key parameters during the adjustment process to PLC controller 7 for test recording. The key parameters include target value, actual value, adjustment time, and electrical parameters. The PLC controller 7 has an information display screen and an operation interface. The PLC controller 7 is a type of PLC controller with a touch screen or an industrial control computer, used to coordinate the actions of sensors and adjustment modules and control the test process. Its specific logic steps are as follows: S201: After the tester inputs the test parameters on the operation interface, the PLC controller 7 reads the set test parameters, which include the target temperature, humidity, test duration and control mode. S202: PLC controller 7 periodically collects data from the test temperature and humidity sensor, the ambient temperature and humidity sensor, the power sensor, and the electrical parameter acquisition device. The test temperature and humidity sensor data is the real-time temperature and humidity value inside the chamber. The ambient temperature and humidity sensor data is the reference temperature and humidity of the external environment. The power sensor data is the output power and current of the current power regulation module. The electrical parameter acquisition device data is the voltage, current, active power, and power factor. S203: Compare the current temperature and humidity with the target values, and calculate the error. The system determines whether heating, cooling, humidification, or dehumidification is needed based on the error, and decides on the control method based on the error range. S204: Calculate the output control value based on the error magnitude and control strategy. The control value includes output power and voltage. S205: Outputs control signals to the power regulation output module to control the power regulation output module to start or stop the heater, chiller, fan, and humidifier; S206: Phased control is implemented according to the test time, stage, and mode: Start-up stage → heating and humidity increase; Stabilization stage → constant temperature and humidity; Cooling stage → natural recovery or cooling. S207: PLC controller 7 continuously monitors the system status for abnormalities, including overcurrent, overvoltage, abnormal power, excessive temperature, communication interruption, sensor failure, and power failure. If an abnormality is detected, the system will immediately stop or reduce power operation. S208: Record the temperature, humidity, and electrical parameter test process data into the internal memory of the PLC controller 7; This embodiment integrates all electrical components into the same box, resulting in a compact structure, high integration, and convenient operation. It can also monitor the operating power of the type test system in real time during the test and perform precise closed-loop control of the power during the test based on the monitoring data. This enables test compensation and result correction, improves test accuracy and stability, achieves multi-dimensional control and closed-loop feedback, and monitors and controls the operation of the entire device, thereby improving the safety and reliability of the entire device.

[0016] In this embodiment, the power supply first supplies power to the entire device through the circuit breaker 4. Then, the current flows through the overcurrent protector 10. The overcurrent protector 10 monitors the current in the circuit and quickly cuts off the power when the current is too high to prevent equipment damage. At the same time, the transformer 9 converts the high voltage or high current signal in the circuit into a low voltage and low current signal within a safe range. The protected power signal is input to the power regulation output module. The PLC controller 7 controls the power regulation output module to output different levels of electrical energy according to the preset climate simulation curve to drive the heating element, humidifying element, cooling element and dehumidifying element in the type test system to turn on, so as to achieve precise adjustment of environmental conditions and carry out test operations. During the experiment, the temperature and humidity sensor collected real-time data on the temperature and humidity changes inside the chamber; the ambient temperature and humidity sensor simultaneously collected environmental parameters outside the chamber; the power sensor monitored the output power status of the power regulation module in real time; and the electrical parameter data acquisition device collected the voltage, current, active power, and power factor data of the entire system and fed them back to the PLC controller 7 as the basis for regulation. The PLC controller 7 judged and calculated based on the received data according to the closed-loop control logic and output control signals to the power regulation output module, controlling the power regulation output module to start or stop the heater, chiller, fan, and humidifier to achieve the purpose of regulating the output power, thereby realizing precise closed-loop regulation and ensuring the stable operation of the entire device.

[0017] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A portable climate simulation test chamber, characterized in that, Includes an electrical control box (2) with an opening on the front side, and an electrical control box cover (1) is rotatably mounted on the front side of the electrical control box (2); It also includes: power supply, circuit breaker (4), transformer (9), type test system, PLC controller (7) and data acquisition unit (8); The circuit breaker (4) is connected to the power supply and the transformer (9). The PLC controller (7) is connected to the data acquisition unit (8) and the type test system through the 485 communication interface. The data acquisition unit (8) is connected to the transformer (9) and the type test system through the 485 communication interface. The data acquisition unit (8) has a built-in Internet of Things module. The rear inner wall of the electrical control box (2) is equipped with a guide rail (3), a terminal block (5) and a wire trough (6). The circuit breaker (4) is installed on the guide rail (3), and the wire trough (6) is located below the terminal block (5). The data collector (8), the transformer (9) and the overcurrent protector (10) are all installed on the rear inner wall of the electrical control box (2). The PLC controller (7) is fixedly connected to the rear side of the electrical control box cover (1). The type test system includes an overcurrent protector (10), a power regulation output module, a heating element, a humidifying element, a cooling element, and a dehumidifying element. The overcurrent protector (10) is connected to the power regulation output module and the heating element.

2. The portable climate simulation test chamber according to claim 1, characterized in that, The data acquisition unit (8) includes an ambient temperature and humidity sensor, an electrical parameter data acquisition unit, a test temperature and humidity sensor, and a power sensor. The ambient temperature and humidity sensor is installed on the outside of the electrical control box (2) to record external environmental conditions as a basis for comparison and compensation. The test temperature and humidity sensor is installed inside the electrical control box (2) to measure the temperature and humidity inside the electrical control box (2) in real time, and to accurately control and record test data. The electrical parameter data acquisition unit is used to collect the voltage, current, active power, and power factor data of the entire type test system and feed them back to the PLC controller (7) as a basis for regulation. The power sensor is used to collect the power data of the components in the type test system in real time and feed them back to the PLC controller (7).

3. The portable climate simulation test chamber according to claim 1, characterized in that, The heating element, humidifying element, cooling element, and dehumidifying element work together to achieve precise adjustment of environmental conditions.

4. The portable climate simulation test chamber according to claim 1, characterized in that, The circuit breaker (4) is used for power outage protection in case of a fault; The overcurrent protector (10) is used to quickly cut off the power when the current is too high, so as to prevent equipment damage and ensure safety.

5. The portable climate simulation test chamber according to claim 2, characterized in that, The power regulation output module is used to adjust the output power according to control commands to drive the components inside the type test system. Its specific operating logic steps are as follows: S101: The power regulation output module receives control instructions from the PLC controller (7) through the 485 communication interface. The control instructions include: target power, voltage, current, regulation time, and output channel information. S102: The power regulation output module parses the received instructions through internal control logic and extracts the regulation target value, which includes the heating and cooling power corresponding to the target temperature and humidity. S103: The power regulation output module reads its own output status parameters in real time, including the current output voltage, current, and power, and obtains external feedback data from the power sensor and electrical parameter data acquisition unit to form an input-output comparison. S104: Compares the current power output value with the target power value to determine if the deviation exceeds the limit. If the deviation is within the allowable range, maintains the current output; otherwise, enters the adjustment process. During the comparison process, it uses... The sign of the deviation determines whether the current demand is for heating (ΔT > 0) or cooling (ΔT < 0), and the magnitude of the deviation determines the control intensity. S105: Employs a PID closed-loop control algorithm to regulate the output voltage and current, gradually bringing the values ​​closer to the target values. The mathematical expression used is: ； Where k is the current sampling period, T is the sampling period time, u(k) is the control output at the kth sampling time, e(k) is the current error, and e(k-1) is the previous error; S106: After reaching the target power, it enters the maintenance mode and monitors the external feedback value in real time. When the power demand fluctuates due to changes in temperature and humidity, it automatically fine-tunes the output to adapt to the target control. S107: Monitor the output status for overload, overtemperature, or short circuit faults. If any abnormality is found, immediately report it to the PLC controller (7). The PLC controller (7) controls the circuit breaker (4) to perform power-off protection. S108: Send the key parameters during the adjustment process to the PLC controller (7) for test recording. The key parameters include the target value, actual value, adjustment time and electrical parameters.

6. The portable climate simulation test chamber according to claim 1, characterized in that, The surface of the PLC controller (7) is provided with an information display screen and an operation interface. The PLC controller (7) is either a PLC controller with a touch screen or an industrial control computer, used to coordinate the actions of sensors and adjustment modules and control the test process. Its specific logical steps are as follows: S201: After the test personnel input the test parameters on the operation interface, the PLC controller (7) reads the set test parameters, which include the target temperature, humidity, test duration and control mode. S202: PLC controller (7) periodically collects data from the test temperature and humidity sensor, the ambient temperature and humidity sensor, the power sensor and the electrical parameter collector. The test temperature and humidity sensor data is the real-time temperature and humidity value inside the box. The ambient temperature and humidity sensor data is the reference temperature and humidity of the external environment. The power sensor data is the output power and current of the current power adjustment module. The electrical parameter collector data is the voltage, current, active power and power factor. S203: Compare the current temperature and humidity with the target values, and calculate the error. The system determines whether heating, cooling, humidification, or dehumidification is needed based on the error, and decides on the control method based on the error range. S204: Calculate the output control value based on the error magnitude and control strategy. The control value includes output power and voltage. S205: Outputs control signals to the power regulation output module to control the power regulation output module to start or stop the heater, chiller, fan, and humidifier; S206: Phased control is implemented according to the test time, stage, and mode: Start-up stage → heating and humidity increase; Stabilization stage → constant temperature and humidity; Cooling stage → natural recovery or cooling. S207: PLC controller (7) continuously monitors whether the system status is abnormal, including overcurrent, overvoltage, power abnormality, temperature over-limit, communication interruption, sensor failure and power failure. If abnormality is found, the system will be stopped immediately or power reduction operation will be performed. S208: Record the temperature, humidity, and electrical parameter test process data into the internal memory of the PLC controller (7).

7. The portable climate simulation test chamber according to claim 1, characterized in that, The transformer (9) includes a current transformer and a voltage transformer. The transformer (9) is used to collect the current and voltage in the circuit and convert the high voltage or high current signal in the circuit into a low voltage and low current signal within a safe range. Its current transformer utilizes the principle of magnetic field coupling to convert the large primary current I1 into a small secondary current I2. The formula used is: Where N1 is the number of turns in the primary winding and N2 is the number of turns in the secondary winding; The voltage transformer uses inductive coupling to reduce the high voltage V1 to the low voltage V2. The formula used is: .

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