CN117472125A - Temperature and humidity control method and device for test box - Google Patents
Temperature and humidity control method and device for test box Download PDFInfo
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- CN117472125A CN117472125A CN202311652429.4A CN202311652429A CN117472125A CN 117472125 A CN117472125 A CN 117472125A CN 202311652429 A CN202311652429 A CN 202311652429A CN 117472125 A CN117472125 A CN 117472125A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 230000001276 controlling effect Effects 0.000 claims description 68
- 238000007791 dehumidification Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
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Abstract
The embodiment of the invention discloses a temperature and humidity control method and device for a test box. The temperature and humidity of the test box are regulated by a high-temperature-level compressor and a low-temperature-level compressor, and the temperature and humidity control method comprises the following steps: receiving an operation demand instruction of a test box; according to the operation demand instruction, determining the temperature and humidity demand of the test box and the operation demand of a preset temperature and humidity curve; according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled so as to adjust the temperature and humidity of the test box; when the preset temperature and humidity curve runs, both the high-temperature-level compressor and the low-temperature-level compressor are in a working state. The temperature and humidity control method and the temperature and humidity control device for the test box can improve reliability of temperature and humidity control.
Description
The application is filed with application number CN2022111478539 and patent name of 'a temperature and humidity control method and device of a test box'.
Technical Field
The embodiment of the invention relates to a temperature and humidity control technology, in particular to a temperature and humidity control method and device for a test box.
Background
For devices, products and equipment with environmental adaptability requirements such as temperature and humidity, the temperature and humidity adjustment test can be carried out through a test box so as to meet the factory requirements. Therefore, the temperature and the humidity in the test box need to be adjusted and controlled so as to ensure the actual test requirement.
At present, the temperature and humidity control method of the existing test box usually uses 0 ℃ as a boundary line, a high-temperature-level compressor at the temperature above 0 ℃ works, and a low-temperature-level compressor at the temperature below 0 ℃ works to adjust the temperature and humidity of the test box, so that uncontrollable temperature and humidity in a switching time box of different compressor works can be caused, the temperature and humidity fluctuates to different degrees, the temperature and humidity easily exceed the required range, and the control reliability is affected.
Disclosure of Invention
The embodiment of the invention provides a temperature and humidity control method and device for a test box, which are used for improving the reliability of temperature and humidity control.
In a first aspect, an embodiment of the present invention provides a temperature and humidity control method for a test box, where the temperature and humidity of the test box are adjusted by a high-temperature-stage compressor and a low-temperature-stage compressor, the temperature and humidity control method includes:
receiving an operation demand instruction of a test box;
according to the operation demand instruction, determining the temperature and humidity demand of the test box and the operation demand of a preset temperature and humidity curve;
controlling the working states of the high-temperature-level compressor and the low-temperature-level compressor according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve so as to adjust the temperature and humidity of the test box;
according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled, and the method comprises the following steps:
when the test box is determined to have no dehumidification requirement, and when the test box is determined to have no cooling requirement, determining whether the temperature of the test box is in a preset temperature range;
and if the temperature of the test box exceeds the preset temperature range, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened.
Optionally, the controlling the working states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve includes:
when the test box is determined to have no dehumidification requirement, and when the test box is determined to have no cooling requirement, determining whether the temperature of the test box is in a preset temperature range;
and if the temperature of the test chamber is within the preset temperature range, controlling the high-temperature-stage compressor to work, and controlling a valve communicated with the high-temperature-stage compressor to be opened.
Optionally, the controlling the working states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve includes:
when the test box is determined to have no dehumidification requirement and the test box is determined to have a cooling requirement, the high-temperature-level compressor and the low-temperature-level compressor are controlled to work, and the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor are controlled to be opened.
Optionally, the test box further comprises a temperature sensor and a temperature and humidity control device, wherein the temperature sensor for collecting temperature is arranged in the test box, and the temperature and humidity control device of the test box is electrically connected with the temperature sensor so as to obtain the temperature of the test box; the temperature and humidity control device stores a preset temperature range in advance so as to determine whether the temperature of the test box is in the preset temperature range.
Optionally, the controlling the working states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve includes:
when the test box is determined to have a dehumidification requirement, determining whether the test box has an operation requirement of a preset temperature and humidity curve;
when the operation requirement of the test box on a preset temperature and humidity curve is determined, controlling the high-temperature-level compressor and the low-temperature-level compressor to work, and controlling the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor to be opened.
Optionally, the controlling the working states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve includes:
when the test box is determined to have a dehumidification requirement, determining whether the test box has an operation requirement of a preset temperature and humidity curve;
when the operation requirement of the test box for not presetting a temperature and humidity curve is determined, controlling the high-temperature-stage compressor to work, and controlling a valve communicated with the high-temperature-stage compressor to be opened.
Optionally, the test box further comprises a drying and dehumidifying device for controlling the dew point temperature of the air entering the box body below-40 ℃.
In a second aspect, an embodiment of the present invention provides a temperature and humidity control apparatus for a test box, where the temperature and humidity of the test box are adjusted by a high-temperature-stage compressor and a low-temperature-stage compressor, the temperature and humidity control apparatus includes:
the instruction receiving module is used for receiving an operation demand instruction of the test box;
the requirement determining module is used for determining the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve according to the operation requirement instruction;
the state control module is used for controlling the working states of the high-temperature-level compressor and the low-temperature-level compressor according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve so as to adjust the temperature and humidity of the test box;
the state control module comprises a range determining unit and a fifth state control unit;
the range determining unit is used for determining whether the temperature of the test box is in a preset temperature range or not when the test box is determined to have no cooling requirement;
and the fifth state control unit is used for controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened if the temperature of the test box exceeds the preset temperature range.
Optionally, the requirement determining module includes:
and the cooling requirement determining unit is used for determining whether the test box has cooling requirement or not when the test box is determined to have no dehumidification requirement.
Optionally, the state control module includes:
the first state control unit is used for controlling the high-temperature-level compressor and the low-temperature-level compressor to work and controlling the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor to be opened when the operation requirement of the test box on a preset temperature and humidity curve is determined.
According to the temperature and humidity control method and device for the test box, provided by the embodiment of the invention, the temperature and humidity of the test box are regulated by the high-temperature-level compressor and the low-temperature-level compressor, and the operation demand instruction of the test box is received; according to the operation demand instruction, determining the temperature and humidity demand of the test box and the operation demand of a preset temperature and humidity curve; according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled so as to adjust the temperature and humidity of the test box; when the preset temperature and humidity curve runs, both the high-temperature-level compressor and the low-temperature-level compressor are in a working state. According to the temperature and humidity control method and device for the test box, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled according to the temperature and humidity requirements of the test box and the operation requirements of the preset temperature and humidity curve, for example, when the preset temperature and humidity curve is operated, the high-temperature-level compressor and the low-temperature-level compressor are both in the working states, the problems that the temperature and humidity are uncontrollable and the temperature and humidity fluctuate to different degrees in the switching time box of the operation of different compressors in the prior art can be solved, and accordingly the reliability of temperature and humidity control is improved.
Drawings
FIG. 1 is a flow chart of a temperature and humidity control method for a test chamber according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a control system according to a second embodiment of the present invention;
FIG. 3 is a flowchart of a temperature and humidity control method for a test chamber according to a second embodiment of the present invention;
FIG. 4 is a flowchart of another method for controlling temperature and humidity of a test chamber according to the second embodiment of the present invention;
fig. 5 is a block diagram of a temperature and humidity control device of a test chamber according to a third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a temperature and humidity control method of a test box according to a first embodiment of the present invention, where the method may be applied to temperature and humidity control of the test box, and the method may be performed by a temperature and humidity control device of the test box, where the device may be implemented in software and/or hardware, and the device may be integrated in an electronic device having a temperature and humidity control function of the test box, such as a computer, where the temperature and humidity of the test box are adjusted by a high-temperature compressor and a low-temperature compressor, and the method specifically includes the following steps:
step 110, receiving an operation demand instruction of the test box.
The operation demand instruction of the test box can comprise a temperature and humidity demand instruction of the test box and an operation demand instruction of a preset temperature and humidity curve.
And 120, determining the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve according to the operation requirement instruction.
For example, if the operation requirement instruction includes a temperature and humidity requirement instruction of the test box, such as a dehumidification cooling instruction and an operation requirement instruction of a preset temperature and humidity curve, it may be determined that the test box has a temperature and humidity requirement and an operation requirement of the preset temperature and humidity curve.
Step 130, controlling working states of the high-temperature-level compressor and the low-temperature-level compressor according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve so as to adjust the temperature and humidity of the test box; when the preset temperature and humidity curve runs, both the high-temperature-level compressor and the low-temperature-level compressor are in a working state.
Fig. 2 is a schematic structural diagram of a control system according to a second embodiment of the present invention. As shown in fig. 2, the high temperature stage compressor CM1 and the low temperature stage compressor CM2 operate to adjust the temperature and humidity of the test chamber. If the test box has a temperature and humidity requirement and a running requirement of a preset temperature and humidity curve, a temperature and humidity control device (not shown in the figure) controls the high-temperature-level compressor CM1 and the low-temperature-level compressor CM2 to work, and controls the valve communicated with the high-temperature-level compressor CM1 and the valve communicated with the low-temperature-level compressor CM2 to be opened, so that the reliability of temperature and humidity control of the test box is ensured.
According to the temperature and humidity control method for the test box, the temperature and humidity of the test box are regulated by the high-temperature-level compressor and the low-temperature-level compressor, and the operation demand instruction of the test box is received; according to the operation demand instruction, determining the temperature and humidity demand of the test box and the operation demand of a preset temperature and humidity curve; according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled so as to adjust the temperature and humidity of the test box; when the preset temperature and humidity curve runs, both the high-temperature-level compressor and the low-temperature-level compressor are in a working state. According to the temperature and humidity control method for the test box, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve, if the high-temperature-level compressor and the low-temperature-level compressor are in the working states when the preset temperature and humidity curve is operated, the problems that the temperature and humidity are uncontrollable in a switching time box of different compressor operations and the temperature and humidity fluctuate to different degrees in the prior art can be solved, and accordingly reliability of temperature and humidity control is improved.
Example two
Fig. 2 is a flowchart of a temperature and humidity control method of a test box according to a second embodiment of the present invention, where the method may be applied to temperature and humidity control of the test box, and the method may be performed by a temperature and humidity control device of the test box, where the device may be implemented in software and/or hardware, and the device may be integrated in an electronic device having a temperature and humidity control function of the test box, such as a computer, where the temperature and humidity of the test box are adjusted by a high-temperature compressor and a low-temperature compressor, and the method specifically includes the following steps:
step 210, receiving an operation demand instruction of the test box.
Step 220, determining whether the test box has a dehumidification requirement according to the operation requirement instruction.
Step 230, when it is determined that the test box has a dehumidification requirement, determining whether the test box has an operation requirement of a preset temperature and humidity curve.
And 240, when the operation requirement of the test box on a preset temperature and humidity curve is determined, controlling the high-temperature-level compressor and the low-temperature-level compressor to work, and controlling the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor to be opened.
Specifically, the high-temperature-stage compressor and the low-temperature-stage compressor can be controlled to start to work, and the valves, such as the electromagnetic valves, for example, for controlling the communication of the high-temperature-stage compressor and the valves, such as the electromagnetic valves, for controlling the communication of the low-temperature-stage compressor are all opened. The rotation speeds of the high-temperature-level compressor and the low-temperature-level compressor during operation may be different, and specifically, the rotation speeds may be adjusted according to actual temperature and humidity requirements, which is not limited herein.
The test box can be dehumidified when the high-temperature-level compressor and the low-temperature-level compressor work, the low-temperature-level compressor is filled with a refrigerant, the evaporation temperature corresponding to the evaporation pressure of the refrigerant is-82.2 ℃, the heat exchange temperature difference of the evaporation temperature is large, the corresponding refrigerating capacity is large, the requirements that the relative humidity of-35 ℃ and-40 ℃ is kept below 30 percent (-35 ℃, the dew point temperature corresponding to 30% R.H relative humidity is-44.59; the dew point temperature corresponding to-40 ℃, and the dew point temperature corresponding to 30% R.H relative humidity is-48.67) can be met. The dehumidification control is performed through the work of the high-temperature-level compressor and the low-temperature-level compressor, so that the integral consistency of a preset temperature and humidity curve can be ensured, and the control requirement of the integral curve can be met. The humidity is regulated through the high-temperature-level compressor and the low-temperature-level compressor in the whole process, and in order to ensure that the evaporator is not frosted, a drying and dehumidifying device can be arranged for assistance, the dew point temperature of air entering the box body is controlled below minus 40 ℃, a micro positive pressure in the test box is maintained, and air with higher external humidity is prevented from entering the test box and frosting on the surface of the evaporator.
And 250, when the operation requirement of the test box for not presetting a temperature and humidity curve is determined, controlling the high-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor to be opened.
Step 260, when it is determined that the test chamber has no dehumidification requirement, determining whether the test chamber has a cooling requirement.
And 270, when the test box is determined to have a cooling requirement, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened.
And 280, when the test box is determined to have no cooling requirement, determining whether the temperature of the test box is in a preset temperature range.
Specifically, a temperature sensor for acquiring temperature can be arranged in the test box, and a temperature and humidity control device of the test box can be electrically connected with the temperature sensor so as to acquire the temperature of the test box. The temperature and humidity control device can store a preset temperature range in advance so as to determine whether the temperature of the test box is in the preset temperature range.
And step 290, if the temperature of the test chamber is within the preset temperature range, controlling the high-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor to be opened.
And 291, if the temperature of the test chamber exceeds the preset temperature range, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened.
The specific size of the preset temperature range can be set according to the actual temperature and humidity requirements, and is not limited herein.
Fig. 4 is a flowchart of another temperature and humidity control method for a test chamber according to the second embodiment of the present invention, where the method includes the following steps:
step one, receiving an operation demand instruction of a test box.
Step two, judging whether the test box has a dehumidification requirement or not according to the operation requirement instruction; if yes, executing the third step; if not, step six is performed.
Step three, judging whether the test box has the operation requirement of a preset temperature and humidity curve or not; if yes, executing the fourth step; if not, executing the step five.
And fourthly, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened, and ending.
And fifthly, controlling the high-temperature-stage compressor to work, controlling the valve communicated with the high-temperature-stage compressor to be opened, and ending.
Step six, judging whether the test box has a cooling requirement or not; if yes, executing a step seven; if not, step eight is performed.
And step seven, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened, and ending.
Step eight, judging whether the temperature of the test box is in a preset temperature range; if yes, executing a step nine; if not, step ten is performed.
And step nine, controlling the high-temperature-stage compressor to work, controlling the valve communicated with the high-temperature-stage compressor to be opened, and ending.
And step ten, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened.
According to the temperature and humidity control method for the test box, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve, if the high-temperature-level compressor and the low-temperature-level compressor are in the working states when the preset temperature and humidity curve is operated, the problems that the temperature and humidity are uncontrollable in a switching time box of different compressor operations and the temperature and humidity fluctuate to different degrees in the prior art can be solved, and accordingly reliability of temperature and humidity control is improved.
Example III
Fig. 5 is a block diagram of a temperature and humidity control device of a test chamber according to a third embodiment of the present invention. The humiture of test box is adjusted by high temperature level compressor and low temperature level compressor, and temperature and humidity control device includes: an instruction receiving module 310, a demand determining module 320, and a status control module 330; the instruction receiving module 310 is configured to receive an operation requirement instruction of the test chamber; the requirement determining module 320 is configured to determine a temperature and humidity requirement of the test chamber and an operation requirement of a preset temperature and humidity curve according to the operation requirement instruction; the state control module 330 is configured to control the working states of the high-temperature-level compressor and the low-temperature-level compressor according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve, so as to adjust the temperature and humidity of the test box; when the preset temperature and humidity curve runs, both the high-temperature-level compressor and the low-temperature-level compressor are in a working state.
Optionally, the requirement determining module 320 includes: a dehumidification demand determination unit and an operation demand determination unit; the dehumidification demand determining unit is used for determining whether the test box has a dehumidification demand or not according to the operation demand instruction; the operation requirement determining unit is used for determining whether the test box has the operation requirement of the preset temperature and humidity curve when the test box is determined to have the dehumidification requirement.
Optionally, the state control module 330 includes a first state control unit, where the first state control unit is configured to control, when determining that the test box has an operation requirement of a preset temperature and humidity curve, the high temperature stage compressor and the low temperature stage compressor to both operate, and control the valve communicated with the high temperature stage compressor and the valve communicated with the low temperature stage compressor to be opened.
Optionally, the state control module 330 includes a second state control unit, where the second state control unit is configured to control the high-temperature-stage compressor to work and control the valve connected to the high-temperature-stage compressor to be opened when it is determined that the test box does not have an operation requirement of a preset temperature and humidity curve.
Optionally, the demand determining module 320 includes a dehumidification demand determining unit and a cooling demand determining unit; the dehumidification demand determining unit is used for determining whether the test box has a dehumidification demand or not according to the operation demand instruction; the cooling requirement determining unit is used for determining whether the test box has cooling requirement or not when the test box is determined to have no dehumidification requirement.
Optionally, the state control module 330 includes: and the third state control unit is used for controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened when the temperature reduction requirement of the test box is determined.
Optionally, the state control module 330 includes: the temperature control device comprises a range determining unit and a fourth state control unit, wherein the range determining unit is used for determining whether the temperature of the test box is in a preset temperature range or not when the temperature of the test box is determined to be not required to be reduced; and the fourth state control unit is used for controlling the high-temperature-stage compressor to work and controlling the valve communicated with the high-temperature-stage compressor to be opened if the temperature of the test chamber is within a preset temperature range.
Optionally, the state control module 330 includes: the temperature control device comprises a range determining unit and a fifth state control unit, wherein the range determining unit is used for determining whether the temperature of the test box is in a preset temperature range or not when the test box is determined to have no cooling requirement; and the fifth state control unit is used for controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened if the temperature of the test box exceeds a preset temperature range.
The temperature and humidity control device of the test box provided by the embodiment and the temperature and humidity control method of the test box provided by any embodiment of the invention belong to the same invention conception, have corresponding beneficial effects, and detailed technical details of the embodiment are not shown in the temperature and humidity control method of the test box provided by any embodiment of the invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. The temperature and humidity control method for the test box is characterized in that the temperature and humidity of the test box are regulated by a high-temperature-level compressor and a low-temperature-level compressor, and the temperature and humidity control method comprises the following steps:
receiving an operation demand instruction of a test box;
according to the operation demand instruction, determining the temperature and humidity demand of the test box and the operation demand of a preset temperature and humidity curve;
controlling the working states of the high-temperature-level compressor and the low-temperature-level compressor according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve so as to adjust the temperature and humidity of the test box;
according to the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve, the working states of the high-temperature-level compressor and the low-temperature-level compressor are controlled, and the method comprises the following steps:
when the test box is determined to have no dehumidification requirement, and when the test box is determined to have no cooling requirement, determining whether the temperature of the test box is in a preset temperature range;
and if the temperature of the test box exceeds the preset temperature range, controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work, and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened.
2. The method of claim 1, wherein controlling the operating states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of the preset temperature and humidity curve comprises:
when the test box is determined to have no dehumidification requirement, and when the test box is determined to have no cooling requirement, determining whether the temperature of the test box is in a preset temperature range;
and if the temperature of the test chamber is within the preset temperature range, controlling the high-temperature-stage compressor to work, and controlling a valve communicated with the high-temperature-stage compressor to be opened.
3. The method of claim 1, wherein controlling the operating states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of the preset temperature and humidity curve comprises:
when the test box is determined to have no dehumidification requirement and the test box is determined to have a cooling requirement, the high-temperature-level compressor and the low-temperature-level compressor are controlled to work, and the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor are controlled to be opened.
4. A temperature and humidity control method according to any one of claims 1 to 3 wherein the test box further comprises a temperature sensor and a temperature and humidity control device, wherein the temperature sensor for collecting temperature is arranged in the test box, and the temperature and humidity control device of the test box is electrically connected with the temperature sensor to obtain the temperature of the test box; the temperature and humidity control device stores a preset temperature range in advance so as to determine whether the temperature of the test box is in the preset temperature range.
5. The method of claim 1, wherein controlling the operating states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of the preset temperature and humidity curve comprises:
when the test box is determined to have a dehumidification requirement, determining whether the test box has an operation requirement of a preset temperature and humidity curve;
when the operation requirement of the test box on a preset temperature and humidity curve is determined, controlling the high-temperature-level compressor and the low-temperature-level compressor to work, and controlling the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor to be opened.
6. The method according to claim 5, wherein controlling the operating states of the high-temperature-stage compressor and the low-temperature-stage compressor according to the temperature and humidity requirement of the test box and the operation requirement of the preset temperature and humidity curve comprises:
when the test box is determined to have a dehumidification requirement, determining whether the test box has an operation requirement of a preset temperature and humidity curve;
when the operation requirement of the test box for not presetting a temperature and humidity curve is determined, controlling the high-temperature-stage compressor to work, and controlling a valve communicated with the high-temperature-stage compressor to be opened.
7. The method of claim 5-6, wherein the test chamber further comprises a drying and dehumidifying apparatus for controlling the dew point temperature of the air entering the chamber to below-40 ℃.
8. The utility model provides a temperature and humidity control device of test box, its characterized in that, the humiture of test box is adjusted by high temperature level compressor and low temperature level compressor, temperature and humidity control device includes:
the instruction receiving module is used for receiving an operation demand instruction of the test box;
the requirement determining module is used for determining the temperature and humidity requirement of the test box and the operation requirement of a preset temperature and humidity curve according to the operation requirement instruction;
the state control module is used for controlling the working states of the high-temperature-level compressor and the low-temperature-level compressor according to the temperature and humidity requirements of the test box and the operation requirements of a preset temperature and humidity curve so as to adjust the temperature and humidity of the test box;
the state control module comprises a range determining unit and a fifth state control unit;
the range determining unit is used for determining whether the temperature of the test box is in a preset temperature range or not when the test box is determined to have no cooling requirement;
and the fifth state control unit is used for controlling the high-temperature-stage compressor and the low-temperature-stage compressor to work and controlling the valve communicated with the high-temperature-stage compressor and the valve communicated with the low-temperature-stage compressor to be opened if the temperature of the test box exceeds the preset temperature range.
9. The temperature and humidity control device of claim 8 wherein the demand determination module comprises:
and the cooling requirement determining unit is used for determining whether the test box has cooling requirement or not when the test box is determined to have no dehumidification requirement.
10. The temperature and humidity control device of claim 8 wherein the status control module comprises:
the first state control unit is used for controlling the high-temperature-level compressor and the low-temperature-level compressor to work and controlling the valve communicated with the high-temperature-level compressor and the valve communicated with the low-temperature-level compressor to be opened when the operation requirement of the test box on a preset temperature and humidity curve is determined.
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