CN103438012A - Frequency modulation type wind speed control and display system and setting method thereof - Google Patents
Frequency modulation type wind speed control and display system and setting method thereof Download PDFInfo
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- CN103438012A CN103438012A CN2013103890528A CN201310389052A CN103438012A CN 103438012 A CN103438012 A CN 103438012A CN 2013103890528 A CN2013103890528 A CN 2013103890528A CN 201310389052 A CN201310389052 A CN 201310389052A CN 103438012 A CN103438012 A CN 103438012A
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Abstract
The invention discloses a frequency modulation type wind speed control and display system and a setting method of the frequency modulation type wind speed control and display system. The frequency modulation type wind speed control and display system comprises a central processing unit (1), wherein the video output end of the central processing unit (1) is connected with a displayer (2), the control input end of the central processing unit (1) is connected with a keyboard (3), the frequency conversion control end of the central processing unit (1) is connected with a frequency converter (4), and the frequency converter (4) is connected with a fan (5). The frequency modulation type wind speed control and display system is characterized in that the data end of the central processing unit (1) is connected with a memory (6), and a wind speed frequency comparison table is stored on the memory (6). The frequency modulation type wind speed control and display system has the remarkable advantages of being simple in structure, low in cost, capable of meeting the requirement for detection of and control over the wind speed of a plurality of any positions in a test chamber, good in flexibility, and capable of meeting the customized requirement of the wind speed detection requirement of the special position.
Description
Technical field
The invention belongs to the control of temperature and humidity testing installation, particularly relate to the control of a kind of frequency modulation type wind speed and display system and setting method thereof.
Background technique
For the control of temperature and humidity testing installation, as GDJS, be widely used in the technical fields such as space flight, aviation, oil, chemical industry, military affairs, vapour rub, boats and ships, electronics, communication, provide the temperature and humidity changing environment for detecting target device, the security test that the compatibility test of simulated target equipment under temperature and humidity changing environment condition reaches electronic parts and components provides reliability trial, product screening etc.For reaching temperature value and the humidity value of quick transfer test equipment working room, and realize as early as possible the stable of temperature and humidity, need to adopt the temperature adjustment of force air cyclic balance, generally adopt blower motor to realize test chamber circulation blowing.
Development along with the tentative industry of ring, wind speed is increasingly outstanding on the impact of aging of product test result, fact proved also just so, with regard to wind speed, restriction has had further requirement to international and domestic ring test-object standard, to the requirement of wind speed in testing installation, is particularly also different.In GB GB-T10586-2006 " moisture-heat test-box technical specifications ", require wind speed to be less than or equal to 1m/s (meter per second); And to wind speed, require as follows in national military standard GJB-150.9A-2009 " military hardware experimental situation test method ", the wind speed that flows through wet bulb sensor should be lower than 4.6m/s (meter per second), and the wind speed of any parts of test specimen surrounding atmosphere should remain on 0.5～1.7m/s (meter per second).This just requires to install air velocity transducer in test chamber, and wind speed is controlled in the purposes of different industries for testing installation; But, for different detection samples, if will reach the maximum authenticity requirement of test, its wind speed Check point position will be different.
Perhaps, according to the GB requirement, at the GB specified position, air velocity transducer is installed; Perhaps, according to military standard of China, at the national military standard specified position, air velocity transducer is installed; Perhaps meet GB and military standard of China simultaneously and carry out the air velocity transducer installation.
The shortcoming of prior art is: in traditional test chamber design, all avoided this standard of wind speed environment, at Check point, air velocity transducer has not been installed and is detected.Along with standardized propelling, the different samples that detect, need different wind speed testing environments, test chamber proposed to higher designing requirement.
The technological difficulties that air velocity transducer is installed are, realize detection and the control of wind speed, at least one or more air velocity transducers need to be installed in testing installation.When equipment carries out the wind speed adjusting to difference detection sample, need repeatedly to test and regulate frequency variator, in order to be met the wind speed of Check point requirement, such operation is very complicated, and also higher to operator's requirement.If if at each Check point, air velocity transducer is installed, implement difficulty also very large, at first, this can increase equipment cost, the more important thing is, a plurality of sensors, in the installation of diverse location, will certainly affect the reliable installation that detects sample in test chamber and fix, so the wind speed that prior art can't complete all sampled points in test chamber detects and controls at all.
Summary of the invention
The purpose of this invention is to provide the control of a kind of frequency modulation type wind speed and display system and setting method thereof, this frequency modulation type wind speed is controlled and display system does not need to install any air velocity transducer, just can meet the requirement that in test chamber, the arbitrary position wind speed detects and controls.
For achieving the above object, at first the present invention explains a kind of frequency modulation type wind speed and controls and display system, comprise central processing unit (CPU) (1), the video output terminals of this central processing unit (CPU) (1) is connected with display device (2), the control input end of this central processing unit (CPU) (1) is connected with keyboard (3), the VFC end of this central processing unit (CPU) (1) is connected with frequency variator (4), this frequency variator (4) is connected with blower fan (5), its key is: the data terminal of described central processing unit (CPU) (1) is connected with storage (6), store the wind speed frequency table of comparisons of each Check point in this storage (6),
Described central processing unit (CPU) (1) also is provided with the air speed data input end and is connected with extraneous.
Described display device (2) shows air speed data.
Corresponding relation by frequency and wind speed, obtain frequency data, just naturally obtains air speed data and also shown, the operator is by display interface controlled wind speed very intuitively, and whole testing apparatus does not need to install air velocity transducer.
The air speed data input end of described central processing unit (CPU) (1) is connected with extraneous through USB interface.
The air speed data input end of described central processing unit (CPU) (1) is connected with extraneous through the TF card.
The setting method of a kind of frequency modulation type wind speed control and display system, its key is:
Air velocity transducer is installed in target location, and after starting blower fan (5), air velocity transducer can obtain the air speed value of target location;
By keyboard (3) input blower fan frequency instruction, to central processing unit (CPU) (1), central processing unit (CPU) (1) is regulated frequency variator (4) dutycycle according to the blower fan frequency instruction, controls blower fan (5) rotating speed;
According to the variation of blower fan frequency instruction, the air velocity transducer correspondence is obtained and each blower fan frequency air speed data one to one, and gives central processing unit (CPU) (1) by air speed data;
Central processing unit (CPU) (1), according to the one-to-one relationship of blower fan frequency and air speed data, is set up the wind speed frequency table of comparisons of this Check point, and the wind speed frequency table of comparisons is sent to storage (6);
Can air velocity transducer be installed in any given position of test chamber is detected, the corresponding wind speed frequency table of comparisons in each air velocity transducer detection position, all wind speed frequency tables of comparisons all leave in storage, for central processing unit (CPU), when needs limit the wind speed requirement of certain position, just can recall the wind speed frequency table of comparisons of this detection position.
The disconnection air velocity transducer is connected with central processing unit (CPU) (1), input current wind speed instruction by keyboard (3), central processing unit (CPU) (1) obtains the wind speed director data, according to the wind speed frequency table of comparisons, send the current frequency corresponding with current wind speed to frequency variator (4), frequency variator (4) is worked according to current frequency drives blower fan, and simultaneously, central processing unit (CPU) (1) sends to display device (2) by the wind speed director data.
Described air velocity transducer directly passes through USB interface, and gives central processing unit (CPU) (1) by air speed data.
Described air velocity transducer sends to the TF card by all air speed datas, by the TF card, sends central processing unit (CPU) (1) to.
Remarkable result of the present invention is: simple in structure, cost is low, can meet the requirement that in test chamber, any number of positions wind speed detects and controls, and flexibility is strong, can meet the customization needs of specific position wind speed testing requirement.
The accompanying drawing explanation
The structured flowchart that Fig. 1 is the control of frequency modulation type wind speed and display system;
The setting procedure figure that Fig. 2 is the control of frequency modulation type wind speed and display system.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of frequency modulation type wind speed is controlled and display system, comprise central processing unit (CPU) (1), the video output terminals of this central processing unit (CPU) (1) is connected with display device (2), the control input end of this central processing unit (CPU) (1) is connected with keyboard (3), the VFC end of this central processing unit (CPU) (1) is connected with frequency variator (4), this frequency variator (4) is connected with blower fan (5), its key is: the data terminal of described central processing unit (CPU) (1) is connected with storage (6), stores the wind speed frequency table of comparisons of each Check point in this storage (6);
Described central processing unit (CPU) (1) also is provided with the air speed data input end and is connected with extraneous.
Described display device (2) shows air speed data.
The air speed data input end of described central processing unit (CPU) (1) is connected with extraneous through USB interface.
The air speed data input end of described central processing unit (CPU) (1) is connected with extraneous through the TF card.
As shown in Figure 2, the setting method of a kind of frequency modulation type wind speed control and display system, its key is:
Air velocity transducer is installed in target location, and after starting blower fan (5), air velocity transducer can obtain the air speed value of target location;
By keyboard (3) input blower fan frequency instruction, to central processing unit (CPU) (1), central processing unit (CPU) (1) is regulated frequency variator (4) dutycycle according to the blower fan frequency instruction, controls blower fan (5) rotating speed;
According to the variation of blower fan frequency instruction, the air velocity transducer correspondence is obtained and each blower fan frequency air speed data one to one, and gives central processing unit (CPU) (1) by air speed data;
Central processing unit (CPU) (1), according to the one-to-one relationship of blower fan frequency and air speed data, is set up the wind speed frequency table of comparisons, and the wind speed frequency table of comparisons is sent to storage (6);
Can air velocity transducer be installed in any given position of test chamber is detected, the corresponding wind speed frequency table of comparisons in each air velocity transducer detection position, all wind speed frequency tables of comparisons all leave in storage, for central processing unit (CPU), when needs limit the wind speed requirement of certain position, just can recall the wind speed frequency table of comparisons of this detection position.
The disconnection air velocity transducer is connected with central processing unit (CPU) (1), input current wind speed instruction by keyboard (3), central processing unit (CPU) (1) obtains the wind speed director data, according to the wind speed frequency table of comparisons, send the current frequency corresponding with current wind speed to frequency variator (4), frequency variator (4) is worked according to current frequency drives blower fan, and simultaneously, central processing unit (CPU) (1) sends to display device (2) by the wind speed director data.
Central processing unit (CPU) (1) obtains the wind speed frequency table of comparisons by the air speed data input end.Central processing unit (CPU) (1) can be PLC, also can be single-chip microcomputer, process control machine.
Described air velocity transducer directly passes through USB interface, and gives central processing unit (CPU) (1) by air speed data.
Described air velocity transducer sends to the TF card by all air speed datas, by the TF card, sends central processing unit (CPU) (1) to.
Claims (7)
1. a frequency modulation type wind speed is controlled and display system, comprise central processing unit (CPU) (1), the video output terminals of this central processing unit (CPU) (1) is connected with display device (2), the control input end of this central processing unit (CPU) (1) is connected with keyboard (3), the VFC end of this central processing unit (CPU) (1) is connected with frequency variator (4), this frequency variator (4) is connected with blower fan (5), it is characterized in that: the data terminal of described central processing unit (CPU) (1) is connected with storage (6), stores the wind speed frequency table of comparisons of each Check point in this storage (6);
Described central processing unit (CPU) (1) also is provided with the air speed data input end and is connected with extraneous.
2. a kind of frequency modulation type wind speed according to claim 1 is controlled and display system, and it is characterized in that: described display device (2) shows air speed data.
3. a kind of frequency modulation type wind speed according to claim 1 is controlled and display system, it is characterized in that: the air speed data input end of described central processing unit (CPU) (1) is connected with extraneous through USB interface.
4. a kind of frequency modulation type wind speed according to claim 1 is controlled and display system, it is characterized in that: the air speed data input end of described central processing unit (CPU) (1) is connected with extraneous through the TF card.
5. a frequency modulation type wind speed is controlled and the setting method of display system, it is characterized in that:
Step 1, wind speed detection device is set;
Air velocity transducer is installed in target location, and after starting blower fan (5), air velocity transducer can obtain the air speed value of target location;
Step 2, set up the wind speed frequency table of comparisons;
By keyboard (3) input blower fan frequency instruction, to central processing unit (CPU) (1), central processing unit (CPU) (1) is regulated frequency variator (4) dutycycle according to the blower fan frequency instruction, controls blower fan (5) rotating speed;
According to the variation of blower fan frequency instruction, the air velocity transducer correspondence is obtained and each blower fan frequency air speed data one to one, and gives central processing unit (CPU) (1) by air speed data;
Central processing unit (CPU) (1), according to the one-to-one relationship of blower fan frequency and air speed data, is set up wind speed frequency
The table of comparisons, and the wind speed frequency table of comparisons is sent to storage (6);
Step 3, complete setting:
The disconnection air velocity transducer is connected with central processing unit (CPU) (1), input current wind speed instruction by keyboard (3), central processing unit (CPU) (1) obtains the wind speed director data, according to the wind speed frequency table of comparisons, send the current frequency corresponding with current wind speed to frequency variator (4), frequency variator (4) is worked according to current frequency drives blower fan, and simultaneously, central processing unit (CPU) (1) sends to display device (2) by the wind speed director data.
6. according to the setting method of the described a kind of frequency modulation type wind speed control of power 5 and display system, it is characterized in that: described air velocity transducer directly passes through USB interface, and gives central processing unit (CPU) (1) by air speed data.
7. according to the setting method of the described a kind of frequency modulation type wind speed control of power 5 and display system, it is characterized in that: described air velocity transducer sends to the TF card by all air speed datas, by the TF card, sends central processing unit (CPU) (1) to.
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| CN2013103890528A CN103438012A (en) | 2013-08-30 | 2013-08-30 | Frequency modulation type wind speed control and display system and setting method thereof |
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| CN2013103890528A CN103438012A (en) | 2013-08-30 | 2013-08-30 | Frequency modulation type wind speed control and display system and setting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701471A (en) * | 2013-12-12 | 2014-04-02 | 深圳市英威腾电气股份有限公司 | Frequency converter keyboard and reading method |
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Cited By (2)
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| CN103701471A (en) * | 2013-12-12 | 2014-04-02 | 深圳市英威腾电气股份有限公司 | Frequency converter keyboard and reading method |
| CN103701471B (en) * | 2013-12-12 | 2017-07-04 | 深圳市英威腾电气股份有限公司 | A kind of frequency converter keyboard and read method |
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Application publication date: 20131211 |