CN201622082U - Cooling air quantity on-line measuring device of automobile radiator - Google Patents
Cooling air quantity on-line measuring device of automobile radiator Download PDFInfo
- Publication number
- CN201622082U CN201622082U CN2010201336943U CN201020133694U CN201622082U CN 201622082 U CN201622082 U CN 201622082U CN 2010201336943 U CN2010201336943 U CN 2010201336943U CN 201020133694 U CN201020133694 U CN 201020133694U CN 201622082 U CN201622082 U CN 201622082U
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- air quantity
- cooling air
- circuit
- line measurement
- automobile radiators
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Abstract
The utility model relates to a cooling air quantity on-line measuring device of an automobile radiator. At least one miniature photoelectric sensor is arranged on a blade. The signal of the miniature photoelectric sensor is input into a single-chip microcomputer through the interface circuit of the photoelectric sensor and a blade rotating speed frequency counting circuit. Acquired data is sent to a personal computer (PC) by the single-chip microcomputer through a communication interface circuit, and the work power of the whole device is supplied by a standard vehicle-mounted power supply through a power conversion circuit. The device overcomes the defects that pressure or hot line type sensors have poor air direction directivity, can not realize on-line measurement, etc. Blade rotating speed is measured by the photoelectric sensor, and cooling air quantity is calculated according to the relationship between the blade rotating speed and air flow. The utility model provides an ideal cooling air quantity on-line measurement tool of an automobile radiator, having the advantages of simple structure, powerful functions and reliable performance.
Description
Technical field
The utility model relates to a kind of measurement mechanism of flow, particularly a kind of automobile radiators cooling air quantity on-line measurement device.
Background technology
Automobile radiators is an indispensable important component part in the automobile cooling system, and its effect is the unnecessary heat process secondary heat interchange that liquid coolant in the engine water jacket is entrained, under the effect of extraneous forced draft, unnecessary heat is dispersed in the air.Therefore, the quality of radiator performance directly influences radiating effect and dynamic property, economy and the reliability of motor car engine in the cooling system, and even produces safety.
On the one hand, engine speed and power improve constantly yet in recent years,, thermal load is increasing thereupon, on the other hand, air resistance when reducing running car and the outward appearance that aspires after perfection, the air capacity of inflow radiator, condenser has the tendency of obvious minimizing.Under above-mentioned adverse condition,, the distribution of heating radiator cooling wind speed and wind speed measured accurately have very important significance in order to ensure cooling performance.
At present, the common method that the automobile radiators cooling air quantity is measured comprises: utilization CFD (Computational Fluid Dynamics) adopts that pressure or hot wire sensor are directly measured etc. to the analog computation of nacelle air quantity.The analog computation of utilization CFD is comparatively complicated, and result of calculation still needs to do further checking by the automobile radiators performance test; Adopts pressure sensor is measured pressure reduction, and to calculate cooling air quantity be more traditional way, but at air quantity hour, pressure reduction changes little, and measuring error is bigger, and accuracy reduces; Hot wire sensor utilizes the physical property of metallic resistance, can measure the rate of flow of fluid of metal surface, and it is higher that hot wire sensor is measured sensitivity, but hot line is installed difficulty, also damages, and can not distinguish the direction of air quantity, and should not carry out under true car travels test.
Summary of the invention
The utility model is the shortcoming of measuring at the automobile radiators cooling air quantity and deficiency, has proposed a kind of automobile radiators cooling air quantity on-line measurement device.This device is lightly portable, strong interference immunity, and the measuring accuracy height, simple to operate, can be loaded on the true car and finish on-line measurement, both measured total blast volume, can obtain the detailed distribution information of air quantity again, and the air quantity of surveying there is good directive property.
The technical solution of the utility model is: a kind of automobile radiators cooling air quantity on-line measurement device, comprise impeller, data acquisition circuit, single-chip microcomputer, the communication interface circuit, PC and power-switching circuit, data acquisition circuit comprises the micro photo electric sensor, the photoelectric sensor interface circuit, the wheel speed frequency counting circuit, at least one micro photo electric sensor is housed on the impeller, the micro photo electric sensor signal is imported single-chip microcomputer through the photoelectric sensor interface circuit behind the wheel speed frequency counting circuit, single-chip microcomputer is sent to PC by the communication interface circuit with image data, and whole device working power is provided through power-switching circuit by the standard vehicle power.
Described impeller comprises blade, housing, support and bearing, several equal-sized circular holes that evenly distributed in the rotating shaft of blade, and at a distance of 45 °, the micro photo electric sensor is fixed on the opening part of support, and faces the circular hole center between each circular hole.
Described single-chip microcomputer can be imported 18 circuit-switched data acquired signal at most.
Described communication interface circuit is selected the RS-232 communication interface for use.
Described impeller uses frivolous impeller, and thickness is 10mm, is installed between automobile radiators and the condenser.
The beneficial effects of the utility model are: the utility model automobile radiators cooling air quantity on-line measurement device, overcome pressure or hot wire sensor wind direction directive property poor, can't on-line measurement etc. defective, measure wheel speed by photoelectric sensor, converse cooling air quantity by the relation between wheel speed and the air mass flow, realizing simple, powerful, dependable performance, is the ideal tools that realizes the on-line measurement of automobile radiators cooling air quantity.
Description of drawings
Fig. 1 is the structured flowchart of the utility model automobile radiators cooling air quantity on-line measurement device;
Fig. 2 is the photoelectric sensor interface circuit figure of the utility model automobile radiators cooling air quantity on-line measurement device;
Fig. 3 is the wheel speed frequency counting circuit figure of the utility model automobile radiators cooling air quantity on-line measurement device;
Fig. 4 is the power-switching circuit figure of the utility model automobile radiators cooling air quantity on-line measurement device;
Fig. 5 is the communication interface circuit figure of the utility model automobile radiators cooling air quantity on-line measurement device;
Fig. 6 is the air measuring value and the wind deflection angular relationship curve map of the utility model automobile radiators cooling air quantity on-line measurement device.
Embodiment
The utility model is by the relation indirect measured automobiles heating radiator cooling air quantity between wheel speed and the air mass flow, the apparatus structure block diagram as shown in Figure 1, whole device is that core is dispatched with single-chip microcomputer 4, impeller 1 is equipped with the micro photo electric sensor, be connected to single-chip microcomputer 4 through photoelectric sensor interface circuit 2, wheel speed frequency counting circuit 3, single-chip microcomputer 4 is sent to PC 7 by serial interface circuit 6 with image data, and whole device working power is provided behind power-switching circuit 5 by the standard vehicle power.
Wheel speed frequency counting circuit 3 as shown in Figure 3.The current signal of photoelectric sensor interface circuit 2 outputs obtains the rectangle square-wave signal of rule through wheel speed frequency counting circuit 3, single-chip microcomputer is represented the wheel rotation frequency number by the number of times of rectangle square-wave signal rising edge in the record unit time, reflects that thus current time passes through the flow of automobile radiators cooling air.
In the actual measurement process, single-chip microcomputer can be handled the signal of 18 road photoelectric sensors at most simultaneously, and each sensor signal is separate, does not disturb mutually.
Power-switching circuit 5 as shown in Figure 4, the standard vehicle power is as the external power supply of whole device, through behind the power-switching circuit 5, the 12V DC voltage of input is converted to the output of 5V DC voltage, provides normal working voltage for installing each electronic devices and components.
By wheel speed and air stream the relationship between quantities, the indirect cooling air quantity of measured automobiles radiator, measurement result precision height not only, but also have more powerful function and characteristics, specifically comprise:
1), on-line measurement function: this device uses special frivolous impeller, thickness only is 10mm, can be installed between automobile radiators and the condenser, and the Application standard vehicle power is as the external power supply of this device, therefore so that the measurement of automobile when running test be achieved, measurement environment is more pressed close to real working condition, and measurement result has more directive significance.
2), low pressure loss: impeller uses very thin spoke and low resistance bearings, so that the pressure loss that produces is littler, compares with the crushing that radiator causes, and the crushing that impeller causes is very little, can ignore.
3), strong interference immunity: electromagnetic interference is more intense near the automobile engine, and the environment temperature height is owing to selecting resistant to elevated temperatures reflective photoelectric sensor to measure wheel speed, so measurement result is not subjected to the impact of automotive interior high temperature and electromagnetic noise.
4), wind direction directive property is good: because impeller only detects the air quantity vertical with the automobile radiators face, therefore measurement result not wind-engaging to change and the impact of the Air Flow of other directions, can measure exactly automobile radiators is worked, with the effective wind rate of impeller shaft parallel direction.
5), metrical information is abundant: device adopts the multiple spot distribution measuring, not only can measure total blast volume, can also obtain the distributed intelligence of air quantity, abundanter foundation is provided for the cooling performance judgement of automobile water tank radiator.
6), communication function: finish communicating by letter of single-chip microcomputer and PC by RS-232 interface, realize that data acquisition, measurement parameter arrange etc.
7), operation is simple: this device only need be mounted to assigned address, connects vehicle power, by the friendly man-machine interface operation of PC, can realize the on-line measurement of automobile radiators cooling air quantity.
Claims (5)
1. automobile radiators cooling air quantity on-line measurement device, it is characterized in that, comprise impeller, data acquisition circuit, single-chip microcomputer, the communication interface circuit, PC and power-switching circuit, data acquisition circuit comprises the micro photo electric sensor, the photoelectric sensor interface circuit, the wheel speed frequency counting circuit, at least one micro photo electric sensor is housed on the impeller, the micro photo electric sensor signal is imported single-chip microcomputer through the photoelectric sensor interface circuit behind the wheel speed frequency counting circuit, single-chip microcomputer is sent to PC by the communication interface circuit with image data, and whole device working power is provided through power-switching circuit by the standard vehicle power.
2. according to the described automobile radiators cooling air quantity of claim 1 on-line measurement device, it is characterized in that, described impeller comprises blade, housing, support and bearing, several equal-sized circular holes have evenly distributed in the rotating shaft of blade, between each circular hole at a distance of 45 °, the micro photo electric sensor is fixed on the opening part of support, and faces the circular hole center.
3. according to the described automobile radiators cooling air quantity of claim 1 on-line measurement device, it is characterized in that described single-chip microcomputer can be imported 18 circuit-switched data acquired signal at most.
4. according to the described automobile radiators cooling air quantity of claim 1 on-line measurement device, it is characterized in that described communication interface circuit is selected the RS-232 communication interface for use.
5. according to the described automobile radiators cooling air quantity of claim 1 on-line measurement device, it is characterized in that described impeller uses frivolous impeller, thickness is 10mm, is installed between automobile radiators and the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201336943U CN201622082U (en) | 2010-03-18 | 2010-03-18 | Cooling air quantity on-line measuring device of automobile radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201336943U CN201622082U (en) | 2010-03-18 | 2010-03-18 | Cooling air quantity on-line measuring device of automobile radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622082U true CN201622082U (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201336943U Expired - Fee Related CN201622082U (en) | 2010-03-18 | 2010-03-18 | Cooling air quantity on-line measuring device of automobile radiator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201622082U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776592B (en) * | 2014-01-07 | 2015-12-02 | 福耀(福建)巴士玻璃有限公司 | A kind of system and method for monitoring VPL production line vacuum leak |
| CN105650021A (en) * | 2016-03-01 | 2016-06-08 | 叶露微 | Measuring device for air quantity of horizontal axis air circulating fan |
| CN108678988A (en) * | 2018-08-27 | 2018-10-19 | 龙城电装（常州）有限公司 | Fan test 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 |
| CN112665661A (en) * | 2020-12-03 | 2021-04-16 | 南理工泰兴智能制造研究院有限公司 | Intelligent water meter calculation service system based on laser speed measurement |
-
2010
- 2010-03-18 CN CN2010201336943U patent/CN201622082U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776592B (en) * | 2014-01-07 | 2015-12-02 | 福耀(福建)巴士玻璃有限公司 | A kind of system and method for monitoring VPL production line vacuum leak |
| CN105650021A (en) * | 2016-03-01 | 2016-06-08 | 叶露微 | Measuring device for air quantity of horizontal axis air circulating fan |
| CN105650021B (en) * | 2016-03-01 | 2019-03-15 | 广州市先河技术工程有限公司 | Circulation flow with the horizontal axis pectinid measuring device |
| CN108678988A (en) * | 2018-08-27 | 2018-10-19 | 龙城电装（常州）有限公司 | Fan test system |
| CN112665661A (en) * | 2020-12-03 | 2021-04-16 | 南理工泰兴智能制造研究院有限公司 | Intelligent water meter calculation service system based on laser speed measurement |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20110318 |