CN101393041A - Air volume detecting method - Google Patents
Air volume detecting method Download PDFInfo
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- CN101393041A CN101393041A CNA2008102023553A CN200810202355A CN101393041A CN 101393041 A CN101393041 A CN 101393041A CN A2008102023553 A CNA2008102023553 A CN A2008102023553A CN 200810202355 A CN200810202355 A CN 200810202355A CN 101393041 A CN101393041 A CN 101393041A
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- impeller
- detection
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- speed
- air quantity
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Abstract
The invention relates to a wind amount detection method. An impeller array is designed according to the size of the area to be detected, and each impeller is provided with a reflective infrared detection device; when the impellers rotate, the infrared detection devices send frequency signals to a singlechip, and the singlechip transfers detection signals of overall impellers to a notebook computer through a field bus; a relation table between the wind speed and the rotation speeds of the impellers is calibrated in a wind tunnel, an interpolation method and other algorithms are utilized to compile a program to compute detected wind amount, and the detected wind amount is displayed on the computer. The method is simple and reliable, has variable detection area, high sensitivity and accurate detection, can record detection data in real time, and can carry out detection under movement environments or static environments.
Description
Technical field
The present invention relates to a kind of air volume detecting method, particularly a kind of suitable area of detection is variable, high sensitivity air volume detecting method under the high temperature, strong electromagnetic interference environment.
Background technology
In the design vehicle process, not overheated for guaranteeing engine, need cooling fan to assist cooling, but under the different speed of a motor vehicle, the different environment temperature and ambient wind velocity, the air quantity difference that needs cooling fan to send into, the air quantity that cooling fan is sent into is very few, and engine can be overheated; The air quantity that cooling fan is sent into is too much, can waste gasoline, so must measure under the different speed of a motor vehicle, the different environment temperature and ambient wind velocity, the cooling air quantity that engine needs, thereby design control cooling fan of engine guarantees both energy savings, guarantees that again engine is not overheated, the precision and the intelligent degree of existing wind quantity test are not high, directly influence the performance of automobile.
In addition, also require the air quantity pick-up unit thinner, can be embedded into automotive interior, detected air quantity data can show and stored record in real time.Also require can be fit under the motor racing environment, the requirement of automobile air quantity detection design is very high.
Summary of the invention
The present invention be directed to precision and the intelligent problem that influences the automobile power consumption that existing vapour air quantity detects, a kind of air volume detecting method has been proposed, this method can accurately detect the automobile air quantity, firm, the thin thickness of required pick-up unit, area of detection is variable, and is highly sensitive, detects accurately, but detecting the data real time record, is that movement environment or static situation all can detect.
Technical scheme of the present invention is: a kind of air volume detecting method, and the impeller of generation air quantity, method of testing comprises the steps:
1), according to area size and shape to be detected, the impeller array of suitable quantity is set;
2), reflection infrared sensor is installed on each impeller, sensor signal is given Single Chip Microcomputer (SCM) system;
3), demarcate in wind-tunnel, scaling method is: be recorded under the different wind speed rotating speed of each impeller, thereby establishment wheel speed and respective relationships table;
4), Single Chip Microcomputer (SCM) system detects the rotary speed data of each impeller, data are delivered in the notebook computer by fieldbus;
5), after notebook receives rotary speed data, carry out verification and Filtering Processing after, and according to the wheel speed and the respective relationships table of establishment in advance, by the rotating speed f of impeller
iCalculate near the wind speed υ of this impeller
i, by the area A of device and the number n of impeller, by formula
Can calculate air quantity.
Beneficial effect of the present invention is: air volume detecting method of the present invention calibrates earlier the relation table of wind speed and wheel speed in wind-tunnel, utilize the interpolation method scheduling algorithm, and coding calculates the air quantity of detection, and shows on computers.But area of detection is variable, and is highly sensitive, detect accurately, but detect the data real time record, and be that movement environment or static situation all can detect, guaranteed the accuracy of test.
Description of drawings
Fig. 1 is an air quantity pick-up unit structural representation of the present invention;
Fig. 2 is that air quantity of the present invention detects the acquisition controlling block diagram.
Embodiment
The tach signal transmitter 6 of the tach signal transmitter 3 of stainless steel frame 1,2# Single Chip Microcomputer (SCM) system 2, right side impeller, impeller 4, impeller fixed support 5, left side impeller, 1# Single Chip Microcomputer (SCM) system 7, impeller mounting guide rail 8 in the air quantity pick-up unit as shown in Figure 1, the automotive interior space is very compact, behind heat radiator and fan, the gap about 25mm is arranged generally.The air quantity pick-up unit can be installed in this.
Detection be multiply by area just for entering the air quantity of automobile from the each point wind speed that heat sink location enters.Because the automotive interior electromagnetic interference (EMI) is very big, can not adopt general electromagnetic sensor when detecting wind speed, this method adopts reflective infrared detection; The automotive interior complex structure enters into automotive interior and sends out wind speed and have nothing in common with each other, and an impeller can only be measured the wind speed of a point, so we adopt the impeller array, as shown in Figure 1, be about to plurality of impeller and line up several rows and some row, write down the rotating speed of each impeller; The rotating speed of impeller detects by reflection infrared sensor, and there are a corresponding relation in wind speed leaf and wheel speed, first this device is demarcated in wind-tunnel, determines the wind speed and the wheel speed relational expression of each impeller, like this according to the rotating speed f of impeller
iJust can measure the wind speed υ that this impeller passes through
i, the area of device is A, and the number of impeller is n, and then air quantity is
Air quantity detects data and need detect in real time in vehicle traveling process, and storage is provided with the post analysis use, air quantity detects the acquisition controlling block diagram as shown in Figure 2, infrared reflection sensor and Single Chip Microcomputer (SCM) system detect the rotating speed of each impeller, wherein No. 1 Single Chip Microcomputer (SCM) system 7 detects the tach signal 6 of left side impellers, No. 2 Single Chip Microcomputer (SCM) system 2 detect the tach signal 3 of the right impeller, in testing process, notebook computer is placed on pilothouse, detected data link to each other with notebook computer by fieldbus, reduce wiring quantity, improved the reliability of communication.
Concrete grammar is:
1,, the impeller array of suitable quantity is set according to area size and shape to be detected;
2, on each impeller reflection infrared sensor is installed, sensor signal is given Single Chip Microcomputer (SCM) system;
3, demarcate in wind-tunnel, scaling method is: be recorded under the different wind speed rotating speed of each impeller, thereby establishment wheel speed and respective relationships table;
4, Single Chip Microcomputer (SCM) system detects the rotary speed data of each impeller, and data are delivered in the notebook computer by fieldbus;
5, after notebook is received rotary speed data, carry out verification and Filtering Processing after, and according in advance the establishment wheel speed and respective relationships table, by the rotating speed f of impeller
iCalculate near the wind speed υ of this impeller
i, by the area A of device and the number n of impeller, by formula
Can calculate air quantity.
Claims (1)
1, a kind of air volume detecting method, the impeller of generation air quantity, method of testing comprises the steps:
1), according to area size and shape to be detected, the impeller array of suitable quantity is set;
2), reflection infrared sensor is installed on each impeller, sensor signal is given Single Chip Microcomputer (SCM) system;
3), demarcate in wind-tunnel, scaling method is: be recorded under the different wind speed rotating speed of each impeller, thereby establishment wheel speed and respective relationships table;
4), Single Chip Microcomputer (SCM) system detects the rotary speed data of each impeller, data are delivered in the notebook computer by fieldbus;
5), after notebook receives rotary speed data, carry out verification and Filtering Processing after, and according to the wheel speed and the respective relationships table of establishment in advance, by the rotating speed f of impeller
iCalculate near the wind speed υ of this impeller
i, by the area A of device and the number n of impeller, by formula
Can calculate air quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102023553A CN101393041A (en) | 2008-11-06 | 2008-11-06 | Air volume detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102023553A CN101393041A (en) | 2008-11-06 | 2008-11-06 | Air volume detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101393041A true CN101393041A (en) | 2009-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102023553A Pending CN101393041A (en) | 2008-11-06 | 2008-11-06 | Air volume detecting method |
Country Status (1)
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| CN (1) | CN101393041A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180858A (en) * | 2014-07-23 | 2014-12-03 | 中山大洋电机股份有限公司 | Method for measuring airflow of fan motor |
| CN104807152A (en) * | 2014-01-28 | 2015-07-29 | 中山大洋电机股份有限公司 | PM motor direct power control constant-air-volume control method and HVAC system using same |
| CN105444978A (en) * | 2014-09-02 | 2016-03-30 | 上海通用汽车有限公司 | Automotive front-end air intake amount testing method and system |
| CN107583225A (en) * | 2017-09-30 | 2018-01-16 | 翟甡 | Effective wind fire extinguishing index tester and method of testing |
| CN110389011A (en) * | 2018-04-19 | 2019-10-29 | 上汽通用汽车有限公司 | Impeller calibration system and the method that impeller is demarcated |
| CN112665871A (en) * | 2020-12-10 | 2021-04-16 | 奇瑞汽车股份有限公司 | System and method for testing air quantity of automobile front end cooling module |
| CN112798814A (en) * | 2019-11-14 | 2021-05-14 | 广州汽车集团股份有限公司 | Wind speed distribution testing method and system |
| CN114754019A (en) * | 2022-04-08 | 2022-07-15 | 中建三局第三建设工程有限责任公司 | Fixed air volume control method and system based on impeller |
-
2008
- 2008-11-06 CN CNA2008102023553A patent/CN101393041A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807152B (en) * | 2014-01-28 | 2018-05-15 | 中山大洋电机股份有限公司 | The constant air capacity control of PM motor direct Power Controls and its HVAC system of application |
| CN104807152A (en) * | 2014-01-28 | 2015-07-29 | 中山大洋电机股份有限公司 | PM motor direct power control constant-air-volume control method and HVAC system using same |
| CN104180858B (en) * | 2014-07-23 | 2017-07-07 | 中山大洋电机股份有限公司 | A kind of method that blower motor measures air quantity |
| CN104180858A (en) * | 2014-07-23 | 2014-12-03 | 中山大洋电机股份有限公司 | Method for measuring airflow of fan motor |
| CN105444978B (en) * | 2014-09-02 | 2018-01-09 | 上海通用汽车有限公司 | A kind of automotive front end air inlet weight testing method and system |
| CN105444978A (en) * | 2014-09-02 | 2016-03-30 | 上海通用汽车有限公司 | Automotive front-end air intake amount testing method and system |
| CN107583225A (en) * | 2017-09-30 | 2018-01-16 | 翟甡 | Effective wind fire extinguishing index tester and method of testing |
| CN107583225B (en) * | 2017-09-30 | 2020-06-30 | 翟甡 | Effective wind power fire extinguishing index tester and testing method |
| CN110389011A (en) * | 2018-04-19 | 2019-10-29 | 上汽通用汽车有限公司 | Impeller calibration system and the method that impeller is demarcated |
| CN112798814A (en) * | 2019-11-14 | 2021-05-14 | 广州汽车集团股份有限公司 | Wind speed distribution testing method and system |
| CN112798814B (en) * | 2019-11-14 | 2023-09-01 | 广州汽车集团股份有限公司 | Wind speed distribution testing method and system |
| CN112665871A (en) * | 2020-12-10 | 2021-04-16 | 奇瑞汽车股份有限公司 | System and method for testing air quantity of automobile front end cooling module |
| CN114754019A (en) * | 2022-04-08 | 2022-07-15 | 中建三局第三建设工程有限责任公司 | Fixed air volume control method and system based on impeller |
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Open date: 20090325 |