CN113467554A - ARM-based environmental test chamber control system and control method thereof - Google Patents
ARM-based environmental test chamber control system and control method thereof Download PDFInfo
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Abstract
An ARM-based environmental test chamber control system comprises a sampling module, an execution module and a control module which is in communication connection with the sampling module and the execution module; the sampling module is positioned in the test box body and used for acquiring real-time environment information in the test box and sending the real-time environment information to the control module; the real-time environment information comprises real-time temperature information and real-time humidity information; the control module comprises a single chip microcomputer with the model of ARMport M3, and is used for receiving the environment information, comparing the environment information with preset environment information, if the environment information is not matched after comparison, sending a control instruction to the execution module, and performing corresponding environment adjustment through the execution module. The system has good expansibility, can process multiple tasks simultaneously, has high processing speed, and effectively solves the problems of low processing speed and complex structure when the existing environmental test chamber control system processes the multiple tasks simultaneously.
Description
Technical Field
The invention relates to the technical field of environmental test chamber control, in particular to an ARM-based environmental test chamber control system and a control method thereof.
Background
The environmental test chamber simulates a natural environment by using a scientific and technological means, and further damages modern industrial products, so that the environmental tolerance and reliability of the modern industrial products are tested. Therefore, the environmental test chamber needs to be able to manufacture various environmental factors in a real environment, such as: temperature, humidity, or pressure, etc. In the test process, the environmental test chamber needs to collect and accurately identify the internal environmental parameters, then parameter operation is carried out on the collected and identified environmental parameters, and an execution mechanism (such as a heating wire, a compressor, a humidifier and the like) in the environmental test chamber is started according to the operation result to adjust the environmental parameters in the environmental test chamber.
The existing control scheme of the environmental test chamber usually adopts a PLC control system, but the PLC control system has the problems of incapability of off-line operation, insufficient communication and network expansibility, complex structure of a control part, insufficient information safety and higher cost.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The invention aims to provide an ARM-based environmental test chamber control system and a control method thereof.
In order to achieve the purpose, the invention adopts a technical scheme that:
an ARM-based environmental test chamber control system comprises a sampling module, an execution module and a control module which is in communication connection with the sampling module and the execution module;
the sampling module is positioned in the test box body and used for acquiring real-time environment information in the test box and sending the real-time environment information to the control module; the real-time environment information comprises real-time temperature information and real-time humidity information;
the control module comprises a single chip microcomputer with the model of ARMport M3, and is used for receiving the environment information, comparing the environment information with preset environment information, if the environment information is not matched after comparison, sending a control instruction to the execution module, and adjusting the corresponding environment information through the execution module.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the sampling module includes temperature sensor, temperature sensor for gather the real-time temperature information in the proof box, and will real-time temperature information send to control module, through temperature sensor's setting, temperature in can real-time monitoring proof box.
2. In the above scheme, the execution module includes a temperature control device, and the temperature control device is used for receiving the control instruction, adjusting the corresponding temperature information according to the control instruction, and adjusting the temperature in the test box through setting the temperature control device, so that the temperature in the test box always meets the test conditions.
3. In the above scheme, the sampling module includes humidity transducer, humidity transducer for gather the real-time humidity information in the proof box, and will real-time humidity information send to control module, through humidity transducer's setting, humidity in can the real-time supervision proof box.
4. In the above scheme, the execution module includes a humidity control device, and the humidity control device is configured to receive the control instruction and adjust the corresponding humidity information according to the control instruction.
5. In the above scheme, the execution module is in communication connection with the control module through MODBUS, CANBUS or ethernet, so as to realize efficient data transmission of the execution module of the control module, and further improve the expandability of the system; and the conclusion of the test piece in actual use is consistent with that in a simulation test, so that the safety and reliability of the test piece in actual use are ensured.
6. In the above scheme, the system further comprises an isolation circuit, wherein the isolation circuit is arranged between the control module and the execution module, and the master control chip is prevented from being burnt out when faults such as short circuit occur.
In order to achieve the purpose, the invention adopts another technical scheme that:
an ARM-based environmental test chamber control method, the method comprising:
receiving real-time environment information in the test box acquired by the acquisition module;
comparing the real-time environment information with preset environment information;
when the real-time environment information is higher or lower than the preset environment information, judging that the real-time environment information is not matched;
when the real-time environment information is equal to the preset environment information, judging that the real-time environment information is matched with the preset environment information;
and if the comparison result is not matched, sending a control instruction to the execution module, and adjusting the corresponding environment information through the execution module. The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the real-time environment information includes real-time temperature information, and the preset environment information includes preset temperature information; the method comprises the steps of receiving real-time temperature information in a test chamber, which is acquired by a temperature sensor in an acquisition module; comparing the real-time temperature information with the preset temperature information; and if the comparison result is not matched, the control module sends a first control instruction to the temperature control device of the execution module, and the corresponding temperature information is adjusted through the temperature control device.
2. In the above scheme, the real-time environment information includes real-time humidity information, and the preset environment information includes preset humidity information; the method comprises the steps of receiving real-time humidity information in a test chamber, which is acquired by a humidity sensor in an acquisition module; comparing the real-time humidity information with the preset humidity information; if the comparison result is not matched, the control module sends a second control instruction to the humidity control device of the execution module, and corresponding humidity information is adjusted through the humidity control device.
The working principle and the advantages of the invention are as follows:
1. the system can add corresponding sensors according to the type of the environmental information required to be acquired in an actual test through the arrangement of the sampling module, and can acquire the environmental information such as temperature, humidity, pressure or earthquake sense and the like in a test box simultaneously, quickly and in real time through the corresponding sensors;
2. the system can perform multi-task simultaneous processing by adopting the single chip microcomputer of the ARMport M3, has high processing speed, and effectively solves the problems of low processing speed and complex structure when the existing environmental test chamber control system performs multi-task simultaneous processing; the cracking difficulty of the internal program is high, so that the security is high;
3. the system can add the execution component in the execution module according to the actual test requirement through the setting of the execution module, thereby being capable of controlling the corresponding execution component to carry out the corresponding environmental information adjustment when receiving the control instruction sent by the control module, leading the system to have good expansibility, simple structure and lower cost compared with the prior art.
Drawings
FIG. 1 is a block diagram of an ARM-based environmental test chamber control system according to an embodiment of the present invention;
FIG. 2 is a flow chart of an ARM-based environmental test chamber control method according to an embodiment of the present invention;
FIG. 3 is a flowchart of an ARM-based environmental test chamber control method according to an embodiment of the present invention.
In the above drawings: 110. a control module; 120. a sampling module; 130. an execution module; 140. a display module; 150. a power supply module; 121. a temperature sensor; 122. a humidity sensor; 131. a temperature control device; 132. and a humidity control device.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
Referring to fig. 1, an ARM-based environmental test chamber control system includes a sampling module 120, an execution module 130, and a control module 110 communicatively coupled to both the sampling module 120 and the execution module 130.
The sampling module 120 is located in the test chamber body, and is configured to obtain real-time environment information in the test chamber and send the real-time environment information to the control module 110; the real-time environment information includes real-time temperature information and real-time humidity information, and can be collected through the temperature sensor 121 and the humidity sensor 122. This system passes through the setting of sampling module 120, and the environmental information type that can acquire according to actual test needs adds corresponding sensor to can carry out environmental information such as temperature, humidity, pressure or the sense of earthquake in the simultaneous, quick and real-time collection proof box through these corresponding sensors.
The control module 110 includes a single chip microcomputer with an armport M3 model, and is configured to receive the environment information, compare the environment information with a preset environment information, send a control instruction to the execution module 130 if the environment information is not matched after the comparison, adjust the corresponding environment information through the execution module 130, and maintain the environment information if the environment information is not matched after the comparison. The system can perform multi-task simultaneous processing by adopting the single chip microcomputer of the ARMport M3, has high processing speed, and effectively solves the problems of low processing speed and complex structure when the existing environmental test chamber control system performs multi-task simultaneous processing; and the cracking difficulty of the internal program is high, so that the security is high. By setting the execution module 130, the system can add the execution component in the execution module 130 according to the actual test requirement, so that when receiving the control instruction sent by the control module 110, the corresponding execution component is controlled to perform corresponding environmental information adjustment, and the system has good expansibility, simple structure and lower cost compared with the prior art.
In this embodiment, the sampling module 120 includes a temperature sensor 121 and a humidity sensor 122. The temperature sensor 121 is configured to collect real-time temperature information in the test chamber, send the real-time temperature information to the control module 110, and monitor the temperature in the test chamber in real time through the setting of the temperature sensor 121; humidity transducer 122 for gather the real-time humidity information in the proof box, and will real-time humidity information send to control module 110, through humidity transducer 122's setting, humidity in can the real-time supervision proof box.
In this embodiment, the execution module 130 includes a temperature control device 131 and a humidity control device 132. The temperature control device 131 is configured to receive the control instruction, and adjust corresponding temperature information according to the control instruction. The temperature control device 131 includes a heating component and a cooling component. And the heating assembly is used for starting to work when a heating control command is received. In this embodiment, the heating element is a heater made of a heating wire, an insulating electrical ceramic, and a mica plate bracket, in other embodiments, the heating element may also be another heating device capable of heating the temperature in the test box, and the embodiment does not limit the implementation type of the heating element.
The cooling assembly is used for starting to work when receiving a cooling control instruction, and the temperature in the test box can be adjusted through the setting of the temperature control device 131, so that the temperature in the test box always meets the test conditions. In this embodiment, the cooling subassembly is the heat exchanger, and in other embodiments, the cooling subassembly also can be other cooling devices that can cool down to the temperature in the test box, and this embodiment does not limit the realization type of cooling subassembly here.
The humidity control device 132 is configured to receive the control instruction, and adjust corresponding humidity information according to the control instruction. The humidity control device 132 includes a humidifying assembly and a dehumidifying assembly. And the humidifying component is used for starting working when receiving a humidifying control instruction. In this embodiment, the humidification subassembly is the humidifier, the external pure water source of humidifier, or join in marriage the water purification machine and connect the water source from beginning, practical moisturizing pump automatic water supply. In other embodiments, the humidification component may also be another humidification device capable of humidifying the humidity in the test chamber, and the implementation type of the humidification component is not limited in this embodiment.
The dehumidifying component is used for starting to work when a dehumidifying control instruction is received, and the humidity in the test box can be adjusted through the arrangement of the humidity control device 132, so that the humidity in the test box always meets the test condition. In this embodiment, the dehumidifying component is a dehumidifying evaporator, in other embodiments, the dehumidifying component may also be another dehumidifying device capable of dehumidifying the humidity in the test chamber, and the embodiment does not limit the implementation type of the dehumidifying component.
The execution module 130 is in communication connection with the control module 110 through MODBUS, CANBUS or ethernet, so as to realize efficient data transmission of the execution module 130 of the control module 110, and further improve the expandability of the system; and the conclusion of the test piece in actual use is consistent with that in a simulation test, so that the safety and reliability of the test piece in actual use are ensured.
In this embodiment, the control module 110 further includes a clock circuit, and the clock circuit is disposed at the periphery of the single chip microcomputer of the armport M3 and is configured to provide a clock signal to the single chip microcomputer and provide real-time when the power is off.
Preferably, the system further includes an isolation circuit, which is disposed between the control module 110 and the execution module 130, and prevents the master control chip from being burned out when there is a fault such as a short circuit.
Preferably, the system further comprises a display module 140. The control module 110 is further configured to send status information to the display module 140, where the status information includes operating status information of the execution module 130, operating status information of the sampling module 120, and real-time environment information. The display module 140 includes an LED display screen, and is configured to display the status information through the LED display screen when receiving the status information sent by the control module 110, so that a user can remotely monitor the operating condition of the system.
Referring to fig. 2, a flowchart of an ARM-based environmental test chamber control method according to an embodiment of the present application is shown, and this embodiment is described by taking the method as an example applied to the ARM-based environmental test chamber control system shown in fig. 1, and the execution subject of each step is the control module 110 in the environmental test chamber control system. The method at least comprises the following steps:
step 201, receiving the real-time environment information in the test chamber collected by the collection module.
The real-time environmental information includes real-time temperature information and real-time humidity information.
A temperature sensor 121 in the acquisition module acquires real-time temperature information in the test chamber and sends the real-time temperature information to the control module 110; the humidity sensor 122 in the collection module collects real-time humidity information in the test chamber and sends the real-time humidity information to the control module 110. The control module 110 receives the real-time temperature information and the real-time humidity information synchronously.
Step 202, comparing the real-time environment information with a preset environment information.
The preset environment information is preset environment information and can be manually input; or sent by other devices, the embodiment does not limit the manner of obtaining the preset environment information.
The preset environment information comprises preset temperature information and preset humidity information.
The real-time temperature information is compared with the preset temperature information, the real-time humidity information is compared with the preset humidity information synchronously and independently, and the comparison process of the real-time temperature information and the preset humidity information is mutually free of interference.
Step 203, if the comparison result is not matched, a control instruction is sent to the execution module 130, and the execution module 130 adjusts the corresponding environment information.
If the comparison is matched, the state is maintained.
When the real-time environment information is higher or lower than the preset environment information, judging that the real-time environment information is not matched; and when the real-time environment information is equal to the preset environment information, judging that the real-time environment information is matched with the preset environment information.
The process of adjusting the corresponding environment information by the execution module 130 is performed synchronously and independently, and each control device of the execution module 130 receives the corresponding control instruction independently and completes the corresponding environment adjustment.
In order to more clearly describe the above ARM-based environmental test chamber control method, the method is described as an example, and refer to fig. 3.
The control instruction comprises a first control instruction and a second control instruction; the first control instruction comprises a heating control instruction and a cooling control instruction; the second control instruction comprises a humidification control instruction and a dehumidification control instruction.
Receiving real-time temperature information in the test chamber collected by the temperature sensor 121; real-time humidity information in the test chamber collected by the humidity sensor 122 is received.
Comparing the real-time temperature information with the preset temperature information; when the real-time temperature information is matched with the preset temperature information after being compared, keeping; and when the real-time temperature information is not matched with the preset temperature information after comparison, judging whether the real-time temperature information is higher than the preset temperature information. When the real-time temperature information is higher than the preset temperature information, sending the cooling control instruction to a cooling component of the temperature control device 131, and performing corresponding temperature adjustment through the cooling component; and when the real-time temperature information is lower than the preset temperature information, sending the heating control instruction to a heating assembly of the temperature control device 131, and performing corresponding temperature adjustment through the heating assembly.
Comparing the real-time humidity information with the preset humidity information; when the real-time humidity information is matched with the preset humidity information after being compared, keeping the real-time humidity information; and when the real-time humidity information is not matched with the preset humidity information after comparison, judging whether the real-time humidity information is higher than the preset humidity information. When the real-time humidity information is higher than the preset humidity information, sending the dehumidification control instruction to a dehumidification assembly of the humidity control device 132, and performing corresponding humidity adjustment through the dehumidification assembly; when the real-time humidity information is lower than the preset humidity information, the humidification control instruction is sent to the humidification component of the humidity control device 132, and corresponding humidity adjustment is performed through the humidification component.
In summary, compared with the prior art, the invention has the following advantages:
1. the system can add corresponding sensors according to the type of the environmental information required to be acquired in an actual test through the arrangement of the sampling module, and can acquire the environmental information such as temperature, humidity, pressure or earthquake sense and the like in a test box simultaneously, quickly and in real time through the corresponding sensors;
2. the system can perform multi-task simultaneous processing by adopting the single chip microcomputer of the ARMport M3, has high processing speed, and effectively solves the problems of low processing speed and complex structure when the existing environmental test chamber control system performs multi-task simultaneous processing; the cracking difficulty of the internal program is high, so that the security is high;
3. the system can add the execution component in the execution module according to the actual test requirement through the setting of the execution module, thereby being capable of controlling the corresponding execution component to carry out the corresponding environmental information adjustment when receiving the control instruction sent by the control module, leading the system to have good expansibility, simple structure and lower cost compared with the prior art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an environmental test case control system based on ARM which characterized in that: the device comprises a sampling module, an execution module and a control module which is in communication connection with the sampling module and the execution module;
the sampling module is positioned in the test box body and used for acquiring real-time environment information in the test box and sending the real-time environment information to the control module; the real-time environment information comprises real-time temperature information and real-time humidity information;
the control module comprises a single chip microcomputer with the model of ARMport M3, and is used for receiving the environment information, comparing the environment information with preset environment information, if the environment information is not matched after comparison, sending a control instruction to the execution module, and performing corresponding environment adjustment through the execution module.
2. The ARM-based environmental test chamber control system of claim 1, wherein:
the sampling module comprises a temperature sensor and is used for collecting real-time temperature information in the test box and sending the real-time temperature information to the control module.
3. The ARM-based environmental test chamber control system of claim 2, wherein:
the execution module comprises a temperature control device, and the temperature control device is used for receiving the control instruction and adjusting the corresponding temperature information according to the control instruction.
4. The ARM-based environmental test chamber control system of claim 1, wherein:
the sampling module comprises a humidity sensor, and the humidity sensor is used for collecting real-time humidity information in the test box and sending the real-time humidity information to the control module.
5. The ARM-based environmental test chamber control system of claim 4, wherein:
the execution module comprises a humidity control device, and the humidity control device is used for receiving the control instruction and adjusting corresponding humidity information according to the control instruction.
6. The ARM-based environmental test chamber control system of claim 1, wherein:
the execution module is in communication connection with the control module through MODBUS or CANBUS or Ethernet.
7. The ARM-based environmental test chamber control system of claim 1, wherein: the system also includes an isolation circuit disposed between the control module and the execution module.
8. An ARM-based environmental test chamber control method is characterized in that: the method comprises the following steps:
receiving real-time environment information in the test box acquired by the acquisition module;
comparing the real-time environment information with preset environment information;
when the real-time environment information is higher or lower than the preset environment information, judging that the real-time environment information is not matched;
when the real-time environment information is equal to the preset environment information, judging that the real-time environment information is matched with the preset environment information;
and if the comparison result is not matched, the control module sends a control instruction to the execution module, and the corresponding environment adjustment is carried out through the execution module.
9. The ARM-based environmental test chamber control method of claim 8, wherein: the real-time environment information comprises real-time temperature information, and the preset environment information comprises preset temperature information;
the method comprises the steps of receiving real-time temperature information in a test chamber, which is acquired by a temperature sensor in an acquisition module;
comparing the real-time temperature information with the preset temperature information;
and if the comparison result is not matched, the control module sends a first control instruction to the temperature control device of the execution module, and the corresponding temperature information is adjusted through the temperature control device.
10. The ARM-based environmental test chamber control method of claim 8, wherein:
the real-time environment information comprises real-time humidity information, and the preset environment information comprises preset humidity information;
the method comprises the steps of receiving real-time humidity information in a test chamber, which is acquired by a humidity sensor in an acquisition module;
comparing the real-time humidity information with the preset humidity information;
if the comparison result is not matched, the control module sends a second control instruction to the humidity control device of the execution module, and corresponding humidity adjustment is carried out through the humidity control device.
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Application publication date: 20211001 |