CN103292872A - Performance detecting system of air quality flowmeter - Google Patents
Performance detecting system of air quality flowmeter Download PDFInfo
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- CN103292872A CN103292872A CN2012100432716A CN201210043271A CN103292872A CN 103292872 A CN103292872 A CN 103292872A CN 2012100432716 A CN2012100432716 A CN 2012100432716A CN 201210043271 A CN201210043271 A CN 201210043271A CN 103292872 A CN103292872 A CN 103292872A
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Abstract
The invention relates to a performance detecting system of an air quality flowmeter. The system comprises a control box, a control console and an air circulation pipeline, wherein a to-be-detected air quality flowmeter is arranged in the air circulation pipeline; a standard air quality flowmeter is arranged on the air circulation pipeline; the to-be-detected air quality flowmeter and standard air quality flowmeter are connected with the control console through the control box; and the control box collects and sends signal sources generated by the to-be-detected air quality flowmeter and standard air quality flowmeter to the control console, and the control console performs match processing on the collected signals and outputs a detection result. Compared with the prior art, the performance detecting system of the air quality flowmeter has the advantages of high measuring accuracy and automation detection level, simple structure, and the like.
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 the car engine electronic control system, its effect is the air-mass flow of measuring engine, offer the micro-control unit (ECU) of engine with the form of voltage (or frequency) signal, as one of the main foundation of best fuel injection amount under each operating mode of ECU calculation engine.Before air flow meter dispatches from the factory, need the parameters such as MAF, working current and operating voltage of each test point be detected, whether satisfy the requirement of regulation so as to judging the air flow meter properties of product.At present, domestic production producer also generally adopts the mode of artificial meter reading to record the running parameter of air flow meter before air flow meter dispatches from the factory, automaticity and detection efficiency are very low, are unfavorable for the raising of batch detection and the production efficiency of air flow meter.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of measuring accuracy height, simple in structure for the defective that overcomes above-mentioned prior art existence, can measure, store data in real time and judge automatically whether the air flow meter performance is qualified, can improve the air flow meter performance detecting system of robotization detection level.
Purpose 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 circulation of air pipeline, air flow meter to be measured is located in the circulation of air pipeline, described circulation of air pipeline is provided with the normal air mass flowmeter, and described air flow meter to be measured all is connected with operator's console by control box with the normal air mass flowmeter; Control box is gathered the signal source of air flow meter to be measured and the generation of normal air mass flowmeter respectively and it is transferred to operator's console, and operator's console carries out matching treatment to the signal that collects, the output testing result.
Described circulation of air pipeline comprises air inlet, circulation pipeline, blower fan and air outlet, and described air inlet, circulation pipeline, 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, described frequency converter connects the terminal box of blower fan, described Frequency Converter Control rotation speed of fan is to regulate the air mass flow in the circulation of air pipeline.
Described control box comprises signal conditioning circuit, high-speed data acquisition card, current transformer and driving circuit, described signal conditioning circuit connects normal air mass flowmeter, 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 the signal conditioning circuit conditioning, be transported to PC through the usb communication line road and carry out matching treatment.
Described high-speed data acquisition card is accepted the command signal that PC spreads out of, and through the work of driving circuit control frequency converter, frequency converter is regulated rotation speed of fan, simulates the working condition of air flow meter under the different operating modes.
Described signal source comprises mass flow rate signal and output signal, the mass flow rate signal of air flow meter to be measured and supply voltage and the working current signal of output signal and air flow meter to be measured of normal air mass flowmeter, and described output signal is output voltage signal or frequency signal.
Be provided with human-computer interaction interface in the described PC, described man-machine interaction circle can show through the data that usb communication line road transmission comes, and displaying contents comprises supply voltage and the working current value of the mass rate of air flow meter to be measured and the relation curve between its output voltage or the frequency, air flow meter to be measured and the mass rate correlation curve of normal air mass flowmeter, air flow meter to be measured; Also be provided with the human-computer interactive control button that to regulate frequency converter in the human-computer interaction interface, be used for setting the test operating mode, realize automatic measurement.
Compared with prior art, the present invention can detect, show, store the running parameters such as mass rate, voltage and electric current of air flow meter automatically, automatically judge whether the performance of air flow meter product is qualified, have that system architecture is simple, stable performance, characteristics real-time and easy to use, can effectively improve dispatch from the factory detection efficiency and the precision of air flow meter product.
Description of drawings
Fig. 1 is the connection diagram of detection system of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of air flow meter performance detecting system, this system comprises control box, operator's console and circulation of air pipeline, air flow meter 10 to be measured is located at the appropriate location of circulation of air pipeline, described circulation of air pipeline is provided with normal air mass flowmeter 9, and described air flow meter 10 to be measured all is connected with operator's console by control box with normal air mass flowmeter 9; Control box is gathered the signal source of air flow meter 10 to be measured and 9 generations of normal air mass flowmeter respectively and it is transferred to by the usb communication line road in the PC 4 of operator's console, and operator's console carries out matching treatment to the signal that collects, the output testing 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, the circulation of air pipeline comprises air inlet 8, circulation pipeline 17, blower fan 12 and air outlet 15 successively, above-mentioned signal conditioning circuit 6 connects normal air mass flowmeter 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, and frequency converter 1 connects the terminal box 13 of blower 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; Signal conditioning circuit 6 can be nursed one's health the signal that air flow meter 10 to be measured (voltage-type or frequency type), standard quality air flowmeter 9, voltage and current sensor are exported and suitably filtering, to reach the requirement that high-speed data acquisition card 5 is gathered signal; The instruction that high-speed data acquisition card 5 can send according to operator's console is gathered the signal of input according to test request, and by the usb data line with the data transmission that collects in the PC 4 of operator's console, and be stored under the hard disk catalogue of regulation; High-speed data acquisition card 5 also can be accepted the command signal that PC 4 spreads out of, through 1 work of driving circuit 14 control frequency converters, the rotating speed of frequency converter 1 control blower fan 12, to regulate the air mass flow in the circulation of air pipeline, realize the function of the working condition of air flow meter under the different operating modes of simulation, power supply 16 is used for air flow meter 10 power supplies 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 supply voltage signal c and the working current signal d of output signal b and air flow meter to be measured of normal air mass flowmeter, and described output signal is output voltage signal or frequency signal.
Be provided with human-computer interaction interface in the PC 4, the data that receive are shown in real time, comprise the mass rate of air flow meter 10 to be measured and the relation curve between its output voltage (or frequency), air flow meter to be measured 10 and the mass rate correlation curve of normal air mass flowmeter 9, supply voltage and the working current value of air flow meter to be measured 10.Simultaneously, also be furnished with fan speed regulation button, test operating mode setting button in the human-computer interaction interface, set the detection operating mode of air flow meter to be measured, regulate frequency converter 1 automatically and export to realize control and adjusting to blower fan 12 rotating speeds to realize the robotization of detection system.
The course of work of above-mentioned air flow meter detection system is as follows:
In PC 4, start the detection interface of air flow meter detection system, at first output voltage, working current, the mass rate of air flow meter to be measured 10 to each test operating mode arranges, and sets the mass rate compare error limit value of air flow meter 10 to be measured and normal air mass flowmeter 9 under each operating mode.This interface can generate the sequence number of the air flow meter of surveying automatically, and its form is yymmddxxxx, and yy, mm, dd are the production procedure lot number, represent the date respectively, represent with two digits, and xxxx represents the quantity sequence number, rises progressively naturally in order since 1.Then, follow these steps to finish the test job of air flow meter:
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, through 1 work of driving circuit 14 control frequency converters, the rotating speed of blower fan 12 is adjusted to the needed rotating speed of first operating mode.After treating that rotation speed of fan is stable, click the data acquisition button on the human-computer interaction interface, output voltage, working current and mass rate to the air flow meter to be measured 10 of first operating mode, 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 the usb communication line road, and show in man-machine interface, represent that the data test of first operating mode is finished.
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, through 1 work of driving circuit 14 control frequency converters, the rotating speed of blower fan 12 is adjusted to second needed rotating speed of operating mode.After treating that rotation speed of fan is stable, click the data acquisition button on the human-computer interaction interface, output voltage, working current and mass rate to the air flow meter to be measured 10 of second operating mode, 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 the usb communication line road, and show in man-machine interface, the data test of second operating mode of expression is finished.
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, through driving circuit 14 control frequency converter work, the rotating speed of blower fan 12 is adjusted to the 3rd the needed rotating speed of operating mode.After treating that rotation speed of fan is stable, click the data acquisition button on the human-computer interaction interface, output voltage, working current and mass rate to the air flow meter to be measured 10 of the 3rd operating mode, 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 the usb communication line road, and show in man-machine interface, represent that the data test of the 3rd operating mode is finished.
4) after the data of three operating points are all tested and are finished, the click data save button, to test the data that obtain be that filename saves as the access file form with the sequence number of this air flow meter to be measured.
5) data of each operating point and the data of normal air mass flowmeter are compared, if there are data to surpass the error limit value, human-computer interaction interface provides the prompting of " 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 that will judge and this air flow meter to be measured is kept in the same file.
6) after the data test of an air flow meter to be measured is finished, click the next button in the interface, the data of a last air flow meter to be measured that remove to show are according to top 1)～5) the step data of testing next air flow meter to be measured.
Claims (7)
1. air flow meter performance detecting system, it is characterized in that, this system comprises control box, operator's console and circulation of air pipeline, air flow meter to be measured is located in the circulation of air pipeline, described circulation of air pipeline is provided with the normal air mass flowmeter, and described air flow meter to be measured all is connected with operator's console by control box with the normal air mass flowmeter; Control box is gathered the signal source of air flow meter to be measured and the generation of normal air mass flowmeter respectively and it is transferred to operator's console, and operator's console carries out matching treatment to the signal that collects, the output testing result.
2. a kind of air flow meter performance detecting system according to claim 1, it is characterized in that, described circulation of air pipeline comprises air inlet, circulation pipeline, blower fan and air outlet, described air inlet, circulation pipeline, 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.
3. a kind of air flow meter performance detecting system according to claim 2, it is characterized in that, 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, described frequency converter connects the terminal box of blower fan, described Frequency Converter Control rotation speed of fan is to regulate the air mass flow in the circulation of air pipeline.
4. a kind of air flow meter performance detecting system according to claim 3, it is characterized in that, described control box comprises signal conditioning circuit, high-speed data acquisition card, current transformer and driving circuit, described signal conditioning circuit connects normal air mass flowmeter, 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 the signal conditioning circuit conditioning, be transported to PC through the usb communication line road and carry out matching treatment.
5. a kind of air flow meter performance detecting system according to claim 4, it is characterized in that, described high-speed data acquisition card is accepted the command signal that PC spreads out of, through the work of driving circuit control frequency converter, frequency converter is regulated rotation speed of fan, simulates the working condition of air flow meter under the different operating modes.
6. a kind of air flow meter performance detecting system according to claim 4, it is characterized in that, described signal source comprises mass flow rate signal and output signal, the mass flow rate signal of air flow meter to be measured and supply voltage and the working current signal of output signal and air flow meter to be measured of normal air mass flowmeter, and described output signal is output voltage signal or frequency signal.
7. a kind of air flow meter performance detecting system according to claim 6, it is characterized in that, be provided with human-computer interaction interface in the described PC, described man-machine interaction circle can show through the data that usb communication line road transmission comes, and displaying contents comprises supply voltage and the working current value of the mass rate of air flow meter to be measured and the relation curve between its output voltage or the frequency, air flow meter to be measured and the mass rate correlation curve of normal air mass flowmeter, air flow meter to be measured; Also be provided with the human-computer interactive control button that to regulate frequency converter in the human-computer interaction interface, be used for setting the test operating mode, realize automatic measurement.
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 |
|---|---|
| CN103292872A true CN103292872A (en) | 2013-09-11 |
| CN103292872B 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) |
Cited By (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 |
| CN106075680A (en) * | 2016-05-27 | 2016-11-09 | 湖南明康中锦医疗科技发展有限公司 | The detection method of a kind of turbofan qualification and device |
| 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 |
| CN112964336A (en) * | 2020-11-06 | 2021-06-15 | 联合汽车电子有限公司 | Air flow calibration equipment and calibration method thereof |
Citations (4)
| 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 |
| 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 |
-
2012
- 2012-02-24 CN CN201210043271.6A patent/CN103292872B/en active Active
-
2013
- 2013-12-03 HK HK13113448.6A patent/HK1186238A1/en not_active IP Right Cessation
Patent Citations (4)
| 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 |
| 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 |
Cited By (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 |
| CN106075680A (en) * | 2016-05-27 | 2016-11-09 | 湖南明康中锦医疗科技发展有限公司 | The detection method of a kind of turbofan qualification and device |
| 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 |
| CN112964336A (en) * | 2020-11-06 | 2021-06-15 | 联合汽车电子有限公司 | Air flow calibration equipment and calibration method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103292872B (en) | 2016-03-16 |
| HK1186238A1 (en) | 2014-03-07 |
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