CN107367312A - A kind of mass air flow sensor method of testing - Google Patents
A kind of mass air flow sensor method of testing Download PDFInfo
- Publication number
- CN107367312A CN107367312A CN201710507566.7A CN201710507566A CN107367312A CN 107367312 A CN107367312 A CN 107367312A CN 201710507566 A CN201710507566 A CN 201710507566A CN 107367312 A CN107367312 A CN 107367312A
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- flow sensor
- air flow
- mass air
- wind speed
- wind
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a kind of mass air flow sensor method of testing, controls the first floating pipe section and the second floating pipe section movement that normal air flowmeter and mass air flow sensor to be measured are clamped in into corresponding position by adjusting cylinder；Start blower fan, wind enters test pipeline through pneumatics device, and the first wind speed detector and the second wind speed detector detect the wind velocity signal of test pipeline inducer and outlet section respectively, by signal output to controller, controller identification wind velocity signal；As wind velocity signal is identical, then starts the data such as output voltage, the operating current of collection normal air flowmeter and mass air flow sensor to be measured and be acquired and export to showing on display, be analyzed to judge properties of product quality.This mass air flow sensor method of testing of the present invention, stability is good, and accuracy is high, and operation is easy to adjust quick, and the detection of applicable a variety of mass air flow sensor is versatile, has preferable application prospect.
Description
Technical field
The invention belongs to detection device technology field, more specifically to a kind of mass air flow sensor method of testing.
Background technology
Air flow meter is a critical component in car engine electronic control system, and its effect is for surveying
Measure the air-mass flow of engine.In the prior art, it is big detection error to be present in the method for testing that mass air flow sensor is detected,
Wind speed stability is poor, poor universality, it is inconvenient for use the defects of, need further Optimal improvements.
The content of the invention
The problem of existing present invention aim to address prior art, there is provided a kind of test validity is high, and versatility is good
Mass air flow sensor method of testing.
To achieve these goals, the technical scheme taken of the present invention is：This mass air flow sensor test side provided
Method, it is characterised in that：Comprise the following steps：
Control the first floating pipe section and the second floating pipe section movement by normal air flowmeter by adjusting cylinder and
Mass air flow sensor to be measured is clamped in corresponding position；
Start blower fan, wind enters test pipeline through pneumatics device, and the first wind speed detector and the second wind speed detector are examined respectively
The wind velocity signal of test pipeline inducer and outlet section, by signal output to controller, controller identification wind velocity signal；Such as wind
Fast signal is identical, then starts the data such as output voltage, the operating current of collection normal air flowmeter and mass air flow sensor to be measured
It is acquired and exports to showing on display, is analyzed to judge properties of product quality；As outlet section wind speed compared with
It is small, then it can start the vacuum located at pipe outlet section rear to aid in increasing the wind speed of back segment by controlling, treat entirely to test
After wind speed is stable in pipeline, start output voltage, operating current of collection normal air flowmeter and mass air flow sensor to be measured etc.
Data are acquired and exported to showing on display, are analyzed to judge properties of product quality.
To make above-mentioned technical proposal more detailed and specific, the present invention also provides optimization technique side further below
Case, to obtain satisfied practical function:
The source of the gas of the pneumatics device and the external controllable adjustable pressure of vacuum.
The blower fan is connected with the frequency converter for controlling its rotating speed.
The present invention compared with prior art, has advantages below：This mass air flow sensor method of testing of the present invention, stability
Good, accuracy is high, and operation is easy to adjust quick, and the detection of applicable a variety of mass air flow sensor is versatile, preferably should have
Use prospect.
Brief description of the drawings
The content expressed by the accompanying drawing of this specification and the mark in figure are briefly described below：
Fig. 1 is test system structure schematic diagram of the present invention；
Fig. 2 is test system structure schematic diagram of the present invention.
In figure mark for：1st, conduit entrance section, 2, normal air flowmeter, the 3, first floating pipe section, 4, support base, 5,
Telescopic pipes section, 6, regulation cylinder, the 7, second floating pipe section, 8, mass air flow sensor to be measured, 9, pipe outlet section, 10, blower fan,
11st, pneumatics device, 12, vacuum, the 13, first wind speed detector, the 14, second wind speed detector.
Embodiment
Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of
Explanation.
Mass air flow sensor test system of the present invention by adjusting cylinder 6 in use, control the first floating pipe section 3 and second
Floating pipe section 7 moves is clamped in corresponding position by normal air flowmeter 2 and mass air flow sensor to be measured 8, it is ensured that accurate steady
Fixed volume connection；Start blower fan, wind enters test pipeline, the first wind speed detector 13 and the second wind speed detector through pneumatics device 11
14 detect the wind velocity signal of test pipeline inducer and outlet section respectively, by signal output to controller, controller identification wind speed
Signal, as wind velocity signal is identical, then start output voltage, the work of collection normal air flowmeter 2 and mass air flow sensor to be measured 8
The data such as electric current are acquired and exported to showing on display, are analyzed to judge properties of product quality；Such as outlet
The wind speed of section is smaller, then can start the vacuum 12 located at pipe outlet section rear by controlling to aid in increasing the wind of back segment
Speed, after entirely wind speed is stable in test pipeline, start the output of collection normal air flowmeter 2 and mass air flow sensor to be measured 8
The data such as voltage, operating current are acquired and exported to showing on display, are analyzed to judge good product performance
It is bad.
In the present invention, blower fan 10 is connected with the frequency converter for controlling its rotating speed, with the air mass flow in control pipeline.Tested
Cheng Zhongke adjusts air mass flow by frequency converter, increases wind speed by pneumatics device, vacuum adjustment control causes whole testing tube
Wind speed in road is stable, to obtain stablizing effective test result.
The test system of this mass air flow sensor method of testing of the present invention, as shown in figure 1, including blower fan 10, test pipeline
And control cabinet, normal air flowmeter 2 and the activity of mass air flow sensor to be measured 8 are clamped in test pipeline.Testing pipeline includes pipe
Road inducer 1 and pipe outlet section 9, pneumatics device 11 is provided between blower fan 10 and conduit entrance section 1, is provided with after pipe outlet section 9
The first wind speed detector 13 and the second wind speed detector are respectively equipped with vacuum 12, conduit entrance section 1 and pipe outlet section 9
14.Control cabinet collection normal air flowmeter 2 and the signal of mass air flow sensor to be measured 8 are simultaneously exported to display progress display comparison,
First wind speed detector 13 and the second wind speed detector 14 connect output wind speed signal to control cabinet.
The mass air flow sensor test system sets pneumatics device before pipeline is tested, and is blown by pneumatics device compressed air to increase
Big wind speed, it is ensured that wind speed uniformity before and after test pipeline.It is provided with vacuum 12 after pipe outlet section 9, during test, the inspection of the first wind speed
When surveying instrument 13 and the second wind speed detector 14 and such as detecting the wind speed difference of conduit entrance section 1 and pipe outlet section 9, control can be passed through
Control is adjusted to back segment wind speed in the vacuum 12 that system starts after being located at pipe outlet section so that wind speed to the greatest extent may be used in test pipeline
It can be consistent, with the accurate and effective of lifting test.
In the present invention, the source of the gas of pneumatics device 11 and the external controllable adjustable pressure of vacuum 12, to control to adjust pneumatics device
11 and the pressure of vacuum 12, and then preferably control the wind speed in regulation and control pipeline.
Mass air flow sensor test system of the present invention, as shown in Fig. 2 test pipeline includes the conduit entrance section 1 located at both ends
With pipe outlet section 9, and coordinate respectively with conduit entrance section 1 and pipe outlet section 9 with fixed clamp normal air located at middle part
The clamping duct section of flowmeter 2 and mass air flow sensor to be measured 8.In the present invention, clamping duct section includes the He of the first floating pipe section 3
Second floating pipe section 7, being provided between the first floating pipe section 3 and the second floating pipe section 7 can drive the two to be respectively facing pipe
The drive mechanism that road inducer 1 and pipe outlet section 2 move.It is i.e. adjustable between the floating pipe section 3 of conduit entrance section 1 and first
Section grips normal air flowmeter 2, the second floating pipe section 7 and the adjustable holding sky to be measured between pipe outlet section 2
Air-flow gauge 8, it is easy to use fast to cause the mass air flow sensor test device to meet the test request of a variety of mass air flow sensor
Victory, it is easy to manipulate, applicability is good.
In the present invention, drive mechanism includes butting up against flexible between the first floating pipe section 3 and the second floating pipe section 7
Duct section 5 and it is connected between the first floating pipe section 3 and the second floating pipe section 7 and controls the first floating pipe section 3 and second
The regulation cylinder 6 that floating pipe section 7 moves.Drive mechanism can control the first floating pipe section 3 and the second floating pipe section 7 to distinguish
Move and adjust to both sides, normal air flowmeter 2 and mass air flow sensor to be measured 8 are clamped with corresponding.
Regulation cylinder 6 is the two-way push cylinder provided with two separate chambers and two piston rods, and two piston rods are stretched
Go out end and connect the first floating pipe section 3 and the second floating pipe section 7 respectively.Can be according to the size of the mass air flow sensor of actual clamping
The specifications control regulation regulation movement of cylinder 6, simple in construction to meet clamping demand, control is convenient to use.
In the present invention, as shown in Figure 2, the first floating pipe section 3 and the second floating pipe section 7 connect the one of drive mechanism
End edge is removably attachable to the first activity along the annular flange mounting surface for being equipped with protrusion, telescopic pipes section by connecting bolt
On the flange mounting surface of the floating pipe section 7 of duct section 3 and second, in order to the maintenance cleaning and replacing of telescopic pipes section 5.
In the present invention, the outer periphery of telescopic pipes section 5 is provided with least two regulation cylinders 6 being spaced apart, steady to ensure
Fixed support regulation, also can set guide rod between the first floating pipe section 3 and the second floating pipe section 7 if necessary, be oriented to
Bar arranged for interval is between cylinder 6 is adjusted, to ensure accurately to connect between pipeline and pipeline.
In the present invention, conduit entrance section 1 and the floating pipe section 3 of pipe outlet section 9 and first and the second floating pipe section 7 with
One end margin of mass air flow sensor docking is equipped with the annular flange mounting surface of protrusion, and flange mounting surface is provided with blanket gas
Pad, sealed air cushion may be configured as with one fixed width, to adapt to the sealed connection of the mass air flow sensor of different caliber sizes.
In the present invention, it is equipped with and is supported on testboard in the first floating pipe section 3 and the second floating pipe section 7
Support base 4, the first floating pipe of the adjustment control section 3 of support base 4 and the second floating pipe section 7 and both ends conduit entrance section can be passed through
1 and the coaxial central degree of pipe outlet section 9, it is ensured that the accuracy of the mass air flow sensor test device.And the first floating pipe section 3
It can move back and forth with the second floating pipe section 7 along support base 4, its certain guiding control action adjusted to it.
This mass air flow sensor method of testing of the present invention, stability is good, and accuracy is high, and operation is easy to adjust quick, can fit
It is versatile with the detection of a variety of mass air flow sensor, there is preferable application prospect.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that present invention specific implementation is not by above-mentioned side
The limitation of formula, if the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without
Improve and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (3)
- A kind of 1. mass air flow sensor method of testing, it is characterised in that：Comprise the following steps：1) by adjusting cylinder the first floating pipe section of control and the second floating pipe section movement by normal air flowmeter and treating Survey mass air flow sensor and be clamped in corresponding position；2) blower fan is started, wind enters test pipeline through pneumatics device, and the first wind speed detector and the second wind speed detector detect respectively The wind velocity signal of pipeline inducer and outlet section is tested, by signal output to controller, controller identification wind velocity signal；Such as wind speed Signal is identical, then starts the data such as output voltage, the operating current of collection normal air flowmeter and mass air flow sensor to be measured and enter Row is gathered and exported to showing on display, is analyzed to judge properties of product quality；Wind speed such as outlet section is smaller, The vacuum located at pipe outlet section rear then can be started to aid in increasing the wind speed of back segment by controlling, treat entirely to test pipeline After interior wind speed is stable, start the data such as output voltage, the operating current of collection normal air flowmeter and mass air flow sensor to be measured It is acquired and exports to showing on display, is analyzed to judge properties of product quality.
- 2. according to the mass air flow sensor method of testing described in claim 1, it is characterised in that：The pneumatics device and vacuum are external The source of the gas of controllable adjustable pressure.
- 3. according to the mass air flow sensor method of testing described in claim 2, it is characterised in that：The blower fan, which is connected with, controls its turn The frequency converter of speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710507566.7A CN107367312B (en) | 2017-06-28 | 2017-06-28 | Air flow meter testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710507566.7A CN107367312B (en) | 2017-06-28 | 2017-06-28 | Air flow meter testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107367312A true CN107367312A (en) | 2017-11-21 |
| CN107367312B CN107367312B (en) | 2020-06-23 |
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ID=60305692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710507566.7A Active CN107367312B (en) | 2017-06-28 | 2017-06-28 | Air flow meter testing method |
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| Country | Link |
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| CN (1) | CN107367312B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007839A (en) * | 2017-11-30 | 2018-05-08 | 深圳市鼎信科技有限公司 | Damp detector control method, computer-readable recording medium and damping detector |
| CN109752059A (en) * | 2019-03-05 | 2019-05-14 | 平湖威格博尔电器有限公司 | Air flow rate detecting device and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007839A (en) * | 2017-11-30 | 2018-05-08 | 深圳市鼎信科技有限公司 | Damp detector control method, computer-readable recording medium and damping detector |
| CN108007839B (en) * | 2017-11-30 | 2023-10-13 | 深圳市鼎信科技有限公司 | Damping detector control method, computer readable storage medium and damping detector |
| CN109752059A (en) * | 2019-03-05 | 2019-05-14 | 平湖威格博尔电器有限公司 | Air flow rate detecting device and detection method |
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| Publication number | Publication date |
|---|---|
| CN107367312B (en) | 2020-06-23 |
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