CN103292872B - A kind of air flow meter performance detecting system - Google Patents
A kind of air flow meter performance detecting system Download PDFInfo
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- CN103292872B CN103292872B CN201210043271.6A CN201210043271A CN103292872B CN 103292872 B CN103292872 B CN 103292872B CN 201210043271 A CN201210043271 A CN 201210043271A CN 103292872 B CN103292872 B CN 103292872B
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Abstract
The present invention relates to a kind of air flow meter performance detecting system, this system comprises control box, operator's console and air circulation pipeline, air flow meter to be measured is located in air circulation pipeline, described air circulation pipeline is provided with normal air mass flowmeter, and described air flow meter to be measured is all connected with operator's console by control box with normal air mass flowmeter; Control box gathers the signal source of air flow meter to be measured and the generation of normal air mass flowmeter respectively and is transferred to operator's console, and operator's console carries out matching treatment to the signal collected, output detections result.Compared with prior art, the present invention has that measuring accuracy is high, structure is simple, the horizontal advantages of higher of Aulomatizeted Detect.
Description
Technical field
The present invention relates to a kind of performance detecting system, especially relate to a kind of air flow meter performance detecting system.
Background technology
Air flow meter is a critical component in car engine electronic control system, its effect is used to the air-mass flow measuring engine, the micro-control unit (ECU) of engine is supplied to, as one of the Main Basis of best fuel injection amount under each operating mode of ECU calculation engine with the form of voltage (or frequency) signal.Before air flow meter dispatches from the factory, the parameters such as the MAF to each test point, working current and operating voltage are needed to detect, so as to judging whether air flow meter properties of product meet the requirement of regulation.At present, domestic production producer also generally adopts the running parameter of the mode record air flow meter of artificial meter reading before air flow meter dispatches from the factory, automaticity and detection efficiency are very low, are unfavorable for the batch detection of air flow meter and the raising of production efficiency.
Summary of the invention
Object of the present invention is exactly provide that a kind of measuring accuracy is high, structure is simple to overcome defect that above-mentioned prior art exists, can measure in real time, store data and whether automatic decision air flow meter performance is qualified, the air flow meter performance detecting system of Aulomatizeted Detect level can be improved.
Object of the present invention can be achieved through the following technical solutions: a kind of air flow meter performance detecting system, this system comprises control box, operator's console and air circulation pipeline, air flow meter to be measured is located in air circulation pipeline, described air circulation pipeline is provided with normal air mass flowmeter, and described air flow meter to be measured is all connected with operator's console by control box with normal air mass flowmeter; Control box gathers the signal source of air flow meter to be measured and the generation of normal air mass flowmeter respectively and is transferred to operator's console, and operator's console carries out matching treatment to the signal collected, output detections result.
Described air circulation pipeline comprises air inlet, flow pipe, blower fan and air outlet, and described air inlet, flow pipe, blower fan are connected successively with air outlet, and the precision of described normal air mass flowmeter is higher than air flow meter to be measured.
Described operator's console is provided with PC, reometer, voltage table and frequency converter, described reometer and voltage table can show working current and the supply voltage of air flow meter to be measured in real time, the terminal box of described frequency converter connecting fan, described Frequency Converter Control rotation speed of fan, to regulate the air mass flow in air circulation pipeline.
Described control box comprises signal conditioning circuit, high-speed data acquisition card, current transformer and driving circuit, described signal conditioning circuit is connection standard air flow meter, air flow meter to be measured, current transformer and high-speed data acquisition card respectively, and described high-speed data acquisition card is connected with driving circuit; The signal source that normal air mass flowmeter, air flow meter to be measured produce is transported to high-speed data acquisition card after signal conditioning circuit conditioning, is transported to PC carries out matching treatment through usb communication line road.
Described high-speed data acquisition card accepts the command signal that PC spreads out of, and controls frequency converter work through driving circuit, and frequency converter regulates rotation speed of fan, simulates the working condition of air flow meter under different operating mode.
Described signal source comprises the mass flow rate signal of normal air mass flowmeter and output signal, the mass flow rate signal of air flow meter to be measured and the supply voltage of output signal and air flow meter to be measured and working current signal, and described output signal is output voltage signal or frequency signal.
Human-computer interaction interface is provided with in described PC, the data come through the transmission of usb communication line road can show by described man-machine interaction circle, and displaying contents comprises the mass rate correlation curve of relation curve, air flow meter to be measured and normal air mass flowmeter, the supply voltage of air flow meter to be measured and working current value between the mass rate of air flow meter to be measured and its output voltage or frequency; Also being provided with the human-computer interactive control button that can regulate frequency converter in human-computer interaction interface, for setting measurement condition, realizing automatic measurement.
Compared with prior art, the present invention can detect automatically, show, store the running parameters such as the mass rate of air flow meter, voltage and electric current, whether the performance of automatic decision air flow meter product is qualified, have that system architecture is simple, stable performance, feature real-time and easy to use, effectively can improve factory testing efficiency and the precision of air flow meter product.
Accompanying drawing explanation
Fig. 1 is the connection diagram of detection system of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of air flow meter performance detecting system, this system comprises control box, operator's console and air circulation pipeline, air flow meter 10 to be measured is located at the appropriate location of air circulation pipeline, described air circulation pipeline is provided with normal air mass flowmeter 9, and described air flow meter to be measured 10 is all connected with operator's console by control box with normal air mass flowmeter 9; Control box gathers the signal source of air flow meter 10 to be measured and normal air mass flowmeter 9 generation respectively and is transferred in the PC 4 of operator's console by it by usb communication line road, and operator's console carries out matching treatment to the signal collected, output detections result.
Control box comprises signal conditioning circuit 6, high-speed data acquisition card 5, current transformer 7, driving circuit 14 and power supply 16, operator's console is provided with PC 4, reometer 3, voltage table 2 and frequency converter 1, air circulation pipeline comprises air inlet 8, flow pipe 17, blower fan 12 and air outlet 15 successively, above-mentioned signal conditioning circuit 6 is connection standard air flow meter 9, air flow meter to be measured 10, current transformer 7 and high-speed data acquisition card 5 respectively, high-speed data acquisition card is connected with driving circuit 14, the terminal box 13 of frequency converter 1 connecting fan 12.
Reometer 3 and voltage table 2 can show working current and the supply voltage of air flow meter 10 to be measured in real time; The signal that air flow meter 10 (voltage-type or frequency type) to be measured, standard quality air flowmeter 9, voltage and current sensor export can carry out nursing one's health and suitably filtering, to reach the requirement of high-speed data acquisition card 5 collection signal by signal conditioning circuit 6; The instruction that high-speed data acquisition card 5 can send according to operator's console, is gathered according to the signal of test request to input, and the data collected is transferred in the PC 4 of operator's console by USB data line, and under being stored in the hard disk catalogue of regulation; High-speed data acquisition card 5 also can accept the command signal that PC 4 spreads out of, control frequency converter 1 through driving circuit 14 to work, frequency converter 1 controls the rotating speed of blower fan 12, to regulate the air mass flow in air circulation pipeline, the function of the working condition of air flow meter under the different operating mode of realization simulation, power supply 16 is for powering to air flow meter 10 to be measured.
The signal source of control box collection comprises mass flow rate signal and output signal a, the mass flow rate signal of air flow meter to be measured and the supply voltage signal c of output signal b and air flow meter to be measured and working current signal d of normal air mass flowmeter, and described output signal is output voltage signal or frequency signal.
Human-computer interaction interface is provided with in PC 4, the data received are shown in real time, comprises the relation curve between the mass rate of air flow meter 10 to be measured and its output voltage (or frequency), air flow meter to be measured 10 and the mass rate correlation curve of normal air mass flowmeter 9, the supply voltage of air flow meter to be measured 10 and working current value.Simultaneously, fan speed regulation button, measurement condition setting button is also furnished with in human-computer interaction interface, set the detection operating mode of air flow meter to be measured, automatically regulate frequency converter 1 to export to realize the control to blower fan 12 rotating speed and adjustment, realize the robotization of detection system.
The course of work of above-mentioned air flow meter detection system is as follows:
The detection interface of air flow meter detection system is started in PC 4, first the output voltage of the air flow meter to be measured 10 of each measurement condition, working current, mass rate are arranged, and the mass rate compare error limit value of air flow meter 10 to be measured and normal air mass flowmeter 9 under setting each operating mode.This interface can generate the sequence number of surveyed air flow meter automatically, and its form is yymmddxxxx, yy, mm, dd are production procedure lot number, and represent the date respectively, represent with two digits, xxxx represents quantity sequence number, naturally rises progressively in order from 1.Then, the test job of air flow meter has been followed these steps to:
1) on human-computer interaction interface, click the test button of first operating mode, PC 4 spreads out of command signal by usb communication line road direction high-speed data acquisition card 5, controls frequency converter 1 work through driving circuit 14, by the rotating speed required for the adjustment of rotational speed of blower fan 12 to first operating mode.After rotation speed of fan is stable, click the data acquisition button on human-computer interaction interface, to the output voltage of the air flow meter to be measured 10 of first operating mode, working current and mass rate, the mass rate of normal air mass flowmeter 9 detects, after data are gathered by high-speed data acquisition card 5, be sent to PC 4 through usb communication line road, and show in man-machine interface, represent that the data test of first operating mode completes.
2) on human-computer interaction interface, click the test button of second operating mode, PC 4 spreads out of command signal by usb communication line road direction high-speed data acquisition card 5, controls frequency converter 1 work through driving circuit 14, by the rotating speed required for the adjustment of rotational speed of blower fan 12 to second operating mode.After rotation speed of fan is stable, click the data acquisition button on human-computer interaction interface, to the output voltage of the air flow meter to be measured 10 of second operating mode, working current and mass rate, the mass rate of normal air mass flowmeter 9 detects, after data are gathered by high-speed data acquisition card 5, be sent to PC 4 through usb communication line road, and show in man-machine interface, represent that the data test of second operating mode completes.
3) on human-computer interaction interface, click the test button of the 3rd operating mode, PC 4 spreads out of command signal by usb communication line road direction high-speed data acquisition card 5, controls frequency converter work through driving circuit 14, by the rotating speed required for the adjustment of rotational speed of blower fan 12 to the 3rd operating mode.After rotation speed of fan is stable, click the data acquisition button on human-computer interaction interface, to the output voltage of the air flow meter to be measured 10 of the 3rd operating mode, working current and mass rate, the mass rate of normal air mass flowmeter 9 detects, after data are gathered by high-speed data acquisition card 5, be sent to PC 4 through usb communication line road, and show in man-machine interface, represent that the data test of the 3rd operating mode completes.
4) after the data of three operating points have all been tested, click data save button, test the data that obtain with the sequence number of this air flow meter to be measured for filename saves as access file form.
5) data of the data of each operating point and normal air mass flowmeter are compared, if there are data to exceed error limit, the prompting that human-computer interaction interface provides " air flow meter to be measured is defective ", otherwise, provide the prompting of " air flow meter to be measured is qualified ".And the test data of the result of judgement and this air flow meter to be measured is kept in same file.
6) after the data test of an air flow meter to be measured completes, click the next button in interface, remove the data of a upper air flow meter to be measured of display, according to 1 above) ~ 5) the data of the next air flow meter to be measured of step test.
Claims (2)
1. an air flow meter performance detecting system, it is characterized in that, this system comprises control box, operator's console and air circulation pipeline, air flow meter to be measured is located in air circulation pipeline, described air circulation pipeline is provided with normal air mass flowmeter, and described air flow meter to be measured is all connected with operator's console by control box with normal air mass flowmeter; Control box gathers the signal source of air flow meter to be measured and the generation of normal air mass flowmeter respectively and is transferred to operator's console, and operator's console carries out matching treatment to the signal collected, output detections result;
Described air circulation pipeline comprises air inlet, flow pipe, blower fan and air outlet, and described air inlet, flow pipe, blower fan are connected successively with air outlet, and the precision of described normal air mass flowmeter is higher than air flow meter to be measured;
Described operator's console is provided with PC, reometer, voltage table and frequency converter, described reometer and voltage table can show working current and the supply voltage of air flow meter to be measured in real time, the terminal box of described frequency converter connecting fan, described Frequency Converter Control rotation speed of fan, to regulate the air mass flow in air circulation pipeline;
Described control box comprises signal conditioning circuit, high-speed data acquisition card, current transformer and driving circuit, described signal conditioning circuit is connection standard air flow meter, air flow meter to be measured, current transformer and high-speed data acquisition card respectively, and described high-speed data acquisition card is connected with driving circuit; The signal source that normal air mass flowmeter, air flow meter to be measured produce is transported to high-speed data acquisition card after signal conditioning circuit conditioning, is transported to PC carries out matching treatment through usb communication line road;
Described signal source comprises the mass flow rate signal of normal air mass flowmeter and output signal, the mass flow rate signal of air flow meter to be measured and the supply voltage of output signal and air flow meter to be measured and working current signal, and described output signal is output voltage signal or frequency signal;
Human-computer interaction interface is provided with in described PC, the data come through the transmission of usb communication line road can show by described man-machine interaction circle, and displaying contents comprises the mass rate correlation curve of relation curve, air flow meter to be measured and normal air mass flowmeter, the supply voltage of air flow meter to be measured and working current value between the mass rate of air flow meter to be measured and its output voltage or frequency; Also being provided with the human-computer interactive control button that can regulate frequency converter in human-computer interaction interface, for setting measurement condition, realizing automatic measurement.
2. a kind of air flow meter performance detecting system according to claim 1, it is characterized in that, described high-speed data acquisition card accepts the command signal that PC spreads out of, frequency converter work is controlled through driving circuit, frequency converter regulates rotation speed of fan, simulates the working condition of air flow meter under different operating mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043271.6A CN103292872B (en) | 2012-02-24 | 2012-02-24 | A kind of air flow meter performance detecting system |
| HK13113448.6A HK1186238A1 (en) | 2012-02-24 | 2013-12-03 | A performance of air mass flow meter detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043271.6A CN103292872B (en) | 2012-02-24 | 2012-02-24 | A kind of air flow meter performance detecting system |
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| Publication Number | Publication Date |
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| CN103292872A CN103292872A (en) | 2013-09-11 |
| CN103292872B true CN103292872B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210043271.6A Active CN103292872B (en) | 2012-02-24 | 2012-02-24 | A kind of air flow meter performance detecting system |
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| CN (1) | CN103292872B (en) |
| HK (1) | HK1186238A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764510A (en) * | 2015-04-23 | 2015-07-08 | 江苏博克斯自动化控制工程有限公司 | Calibration system for full-automatic direct-inserted hot type gas mass-flow meter and application thereof |
| CN106075680B (en) * | 2016-05-27 | 2018-07-06 | 湖南明康中锦医疗科技发展有限公司 | A kind of detection method and device of turbofan qualification |
| CN106596871A (en) * | 2017-03-02 | 2017-04-26 | 中国家用电器研究院 | Method and device for detecting performance reliability of air quality monitor |
| CN107560694A (en) * | 2017-08-31 | 2018-01-09 | 上海大众祥源动力供应有限公司 | A kind of platform for flow verification and the flow verification method using the platform |
| CN112964336B (en) * | 2020-11-06 | 2024-07-09 | 联合汽车电子有限公司 | Air flow calibration equipment and calibration method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585215Y (en) * | 2002-12-02 | 2003-11-05 | 中国矿业大学 | Portable all-purpose tester for performance of ventilator |
| CN201731924U (en) * | 2010-04-17 | 2011-02-02 | 天信仪表集团有限公司 | Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device |
| CN101979968A (en) * | 2010-10-14 | 2011-02-23 | 同济大学 | Device and method for testing air quality sensor and air flow sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6360579B1 (en) * | 1999-03-26 | 2002-03-26 | Micro Motion, Inc. | Flowmeter calibration system with statistical optimization technique |
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- 2012-02-24 CN CN201210043271.6A patent/CN103292872B/en active Active
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585215Y (en) * | 2002-12-02 | 2003-11-05 | 中国矿业大学 | Portable all-purpose tester for performance of ventilator |
| CN201731924U (en) * | 2010-04-17 | 2011-02-02 | 天信仪表集团有限公司 | Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device |
| CN101979968A (en) * | 2010-10-14 | 2011-02-23 | 同济大学 | Device and method for testing air quality sensor and air flow sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103292872A (en) | 2013-09-11 |
| HK1186238A1 (en) | 2014-03-07 |
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