Gas-saving control system and control method of open-top gas simulation chamber

An open-top, simulated gas technology, applied in the direction of flow control of electrical devices, etc., can solve the problems of poor anti-interference ability, lack of perception, frequent ventilation, etc.

Active Publication Date: 2020-10-27
NINGXIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing system generally adopts the "upper and lower limit" method to control the gas concentration in the gas chamber, which has disadvantages such as low control accuracy, poor anti-interference ability, and slow adjustment speed.
Moreover, it lacks the perception of the external environment, and cannot respond to the complex environment in time and protect the system. When the external environment changes, especially when the wind is strong, a large amount of gas in the air chamber is taken away, and the air chamber can only A large amount of supplemental CO 2 , the gas consumption is too large, the ventilation is frequent, and the gas cylinder needs to be replaced in 2-3 days, causing a lot of waste

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0036] Referring to Figure 1, a gas-saving control method for an open-top gas simulation chamber, the method includes:

[0037] Step 100: According to the obtained wind speed information outside the open-top gas simulation chamber, determine whether the wind speed exceeds the first set threshold;

[0038] Step 101: If yes, turn off the air supply system;

[0039] Step 102: Otherwise, when it is judged that the wind speed is lower than the first set threshold and higher than the second set threshold, adjust the air supply volume in the open-top gas simulation chamber according to the PI algorithm, and the air supply speed is the first set speed ;

[0040] When it is judged that the wind speed is lower than the second set threshold, adjust the air supply volume in the open-top gas simulation chamber according to the PI algorithm, and the air supply speed is the second set speed; where the first set threshold is greater than the second set threshold , wherein the first set spee...

Embodiment 2

[0042] A gas-saving control method of an open-top gas simulation gas chamber, the method comprising:

[0043] Step 100: According to the obtained wind speed information outside the open-top gas simulation chamber, determine whether the wind speed exceeds the first set threshold;

[0044] Step 101: If yes, then turn off the gas supply system; while closing the gas supply system, send a preset alarm message to the administrator;

[0045] Step 102: Otherwise, when it is judged that the wind speed is lower than the first set threshold and higher than the second set threshold, adjust the air supply volume in the open-top gas simulation chamber according to the PI algorithm, and the air supply speed is the first set speed ; When judging that the wind speed is lower than the second set threshold, adjust the air supply volume in the open-top gas simulation chamber according to the PI algorithm, and the air supply speed is the second set speed; the first set threshold is greater than t...

Embodiment A

[0056] One end of the gas transmission pipeline is connected with the gas cylinder, and the other end of the gas transmission pipeline is set in the open-top gas simulation gas chamber, that is, the gas in the gas cylinder is input into the open-top gas simulation gas chamber, and the open-top gas simulation gas chamber The gas-saving control system includes an outdoor wind speed acquisition module 10, a judging module A20, and an air supply control module 30. The wind speed acquisition module is used to collect the wind speed value outside the open-top gas simulation air chamber. The judging module A20 is based on the collected wind speed value and the first Set the threshold, determine whether the collected wind speed value exceeds the first set threshold, if so, send the first control signal to the air supply control module 30, and the air supply control module 30 will close the air supply system after responding to the first control signal; otherwise, The second control sig...

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Abstract

The invention provides a gas saving type control system of a top-open gas simulation chamber and its control method. The system senses the speed of air from the external environment, automatically selects appropriate gas supply modes, greatly reduce the waste of gas, a gas cylinder only needs to be replaced every week on average, the system is thus more intelligent, and the cost is saved.

Description

technical field [0001] The invention relates to a control system of an open-top gas simulation gas chamber, in particular to a gas-saving control system and a control method of an open-top gas simulation gas chamber. Background technique [0002] The impact of climate change on human beings is an indisputable fact. Atmospheric CO 2 Concentration and temperature are the most important features of climate change, which also have important effects on plants, through warming and increasing CO 2 Concentration simulates climate change and monitors the impact on plants in the simulated climate environment. At present, there are mainly three ways to simulate climate change experiments. This study mainly uses a semi-closed outdoor climate simulation room with an open top, that is, an open-top air chamber ( open top chamber, OTC), the air chamber is made of plastic steel skeleton, inlaid with glass, the bottom surface is a regular octagon, and the upper part of the air chamber is an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D7/06
Inventor 马亚平曹兵宋丽华哈蓉贾昊柳康乐
Owner NINGXIA UNIVERSITY
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