CN109186720A - A kind of water level sensor durability test method - Google Patents
A kind of water level sensor durability test method Download PDFInfo
- Publication number
- CN109186720A CN109186720A CN201811046891.9A CN201811046891A CN109186720A CN 109186720 A CN109186720 A CN 109186720A CN 201811046891 A CN201811046891 A CN 201811046891A CN 109186720 A CN109186720 A CN 109186720A
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- CN
- China
- Prior art keywords
- water level
- level sensor
- durability test
- switch
- test method
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
Abstract
The invention discloses a kind of water level sensor durability test methods, which comprises the steps of: includes the following steps: 1) to be attached water level sensor to be measured with test device；2) start button switch is pressed, gas is passed through；3) air pressure reduction regulation, control input the size of the atmospheric pressure value in water level sensor to be measured；4) water level sensor exhaust to be measured is lost heart, and a cycle terminates；5) it repeats step 3) step 4) and carries out cycle period test.This water level sensor durability test method of the present invention, high degree of automation, quick and precision easy to detect is high, and proving period is short, and applicability is good, with good application prospect.
Description
Technical field
The invention belongs to sensor technical fields, more specifically to a kind of water level sensor durability test method.
Background technique
Water level sensor reliability is one of most important performance of automatic washing machine, it is the property that user is concerned about the most
Can, also it is related to product utilization rate.Water level sensor poor reliability will have a direct impact on product sale.Therefore, water level sensor can
It is an essential important tests by property type approval test, wherein durable test is also in type approval test in reliability demonstration
One of important link.It in the prior art, is to wash the placement of use in washing machine water level sensor to durable sensor traditional test mode
It is tested inside clothing machine；Period test mode testing time is long, and the general entire proving period end time needs 3-4 months,
Waiting time is too long, and test is responsible for and test phase is easy to appear other non-use in washing machine water level sensor failures and shuts down
The generation of phenomenon cannot accurately react the reliability of use in washing machine water level sensor.
Summary of the invention
Present invention aim to address problems of the existing technology, provide a kind of high degree of automation, and proving period is short,
The high water level sensor durability test method of accuracy.
To achieve the goals above, the technical scheme adopted by the invention is as follows: a kind of water level sensor durability test method, packet
It includes following steps: including the following steps: 1) to be attached water level sensor to be measured with test device；2) start button is pressed to open
It closes, is passed through gas；3) air pressure reduction regulation, control input the size of the atmospheric pressure value in water level sensor to be measured；4) input simulation
The pneumatic parameter value of washing machine highest inflow；5) water level sensor to be measured reaches setup parameter value final vacuum and loses heart, a week
Phase terminates；6) 3) step 5) that repeats the above steps carries out cycle period test.
To keep above-mentioned technical proposal more detailed and specific, the present invention also provides optimization technique sides further below
Case, to obtain satisfied practical function:
The gas of 0.2Kpa air pressure is passed through in step 2).
Input gas carries out decompression tune through level-one air pressure dropping valve switch and secondary accurate air valve regulating switch in step 3)
Section.
After water level sensor to be measured reaches setup parameter value, system determines state of pressure keeping 5S, starts to deflate after 5S, put
The gas time is 5S.
Servo air pressure adjustment on the channel for being connected to water level sensor to be measured equipped with accuracy controlling low pressure value switchs
And control water level sensor air pressure inside inflation/deflation is precisely controlled switch valve.
In step 4), water level sensor exhaust gas inside is controlled by being precisely controlled switch valve.
Level-one air pressure dropping valve switch and secondary accurate air valve regulating switch are set on the controller of test device, the control
It is additionally provided with the start button switch and stop button switch that control starting stops on device processed, is additionally provided with the work of display working condition
Indicator light and emergency stop button switch.
The controller is connected with counter, and every carry out a cycle, counter numeration is once.
A kind of this water level sensor durability test method of the present invention compared with prior art, has the advantage that this hair
Bright this water level sensor durability test method, high degree of automation, quick and precision easy to detect is high, and applicability is good, has
Preferable application prospect.
Detailed description of the invention
The label in content and figure expressed by the attached drawing to this specification is briefly described below:
Fig. 1 is water level sensor durable test logical construction schematic diagram of the present invention；
Fig. 2 is water level sensor durable test controller schematic diagram of the present invention；
Appended drawing reference: 1, start button switchs, 2, stop button switch, 3, work light, 4, emergency stop button switch, 5,
Secondary precision air valve regulating switch, 6, level-one air pressure dropping valve switch.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation.
Water level sensor reliability, which improves, means that washing machine is more durable.Therefore, water level sensor is reliable
Property type approval test is an essential important tests, and wherein durable test is also in type approval test, in reliability demonstration
One of important link.
1) this water level sensor durability test method of the present invention includes the following steps: water level sensor to be measured and survey
Trial assembly, which is set, to be attached；2) start button switch is pressed, gas is passed through；3) air pressure reduction regulation, control input water level to be measured and pass
The size of atmospheric pressure value in sensor；4) the pneumatic parameter value of input simulation washing machine highest inflow；5) water level sensor to be measured
Reach setup parameter value final vacuum to lose heart, a cycle terminates；6) 3) step 5) that repeats the above steps carries out cycle period test.
Different parameter values is inputted according to different product characteristics, is washed by the input simulation of servo air pressure adjustment switch control
Clothing machine highest intakes magnitude as parameter value, such as: input pressure value eg.380mm water-column, corresponding input 3.72kPa, master
Act on is for simulating washing machine highest inflow；In entire test process, water level sensor rises to from 0mm water column automatically
380mm water column (ratio such as water-column mm is converted into atmospheric pressure value)；After water-column reaches setting value, system voluntarily determines pressure maintaining shape
Start to deflate after state 5S, 5S, deflation time 5S；
In the present invention, the controller of test device is equipped with the start button switch 1 and stop button that control starting stops
Switch 2, the level-one air pressure dropping valve switch 6 of reduction regulation and secondary accurate air valve regulating switch 5, are additionally provided with display working condition
Work light 3 and emergency stop button switch 4.Emergency stop button switch 4 is pressed when misoperation or operation exception.
The gas of 0.2Kpa air pressure is passed through in step 2).Guarantee the gas for being passed through clean dried.
Input gas carries out decompression tune through level-one air pressure dropping valve switch and secondary accurate air valve regulating switch in step 3)
Section.
Servo air pressure adjustment on the channel for being connected to water level sensor to be measured equipped with accuracy controlling low pressure value switchs
And control water level sensor air pressure inside inflation/deflation is precisely controlled switch valve.Servo air pressure adjustment switch is for controlling input water
Atmospheric pressure value size inside level sensor.
In step 3), different atmospheric pressure values are inputted according to different product characteristic.Such as: Eg.XQB45 model maximum durable test water
Pillar height degree 380mm, setting value 3.72kPa；Eg.XQB55 model maximum durable test water-column 120mm, setting value
1.17kPa；
In step 4), by being precisely controlled switch valve, realizes water level sensor exhaust gas inside, it is more to be automatically drained out interiors of products
Residual air body.
In the present invention, every carry out a cycle, counter counts once automatically, and the gauge internal of sensor detector is certainly
Row design cycle period, inside carry out logic control to it using PLC or single-chip microcontroller；In this test method by washing machine into
Depth of water angle value is converted to air pressure, is controlled by time, gas bleeder valve gas flow rate, sets the air value punching be converted to
Outgassing rate；It is main or is controlled by the time.
This water level sensor durability test method of the present invention, high degree of automation, quick and precision easy to detect is high, tests
The card period is short, and applicability is good, with good application prospect.
The present invention is exemplarily described above in conjunction with attached drawing, but the present invention is not limited to aforesaid way, only
The improvement for the various unsubstantialities to be carried out using the inventive concept and technical scheme of the present invention directly applies to other occasions
, it falls within the scope of protection of the present invention.
Claims (8)
1. a kind of water level sensor durability test method, which comprises the steps of: including the following steps: 1) will be to
Water level sensor is surveyed to be attached with test device；2) start button switch is pressed, gas is passed through；3) air pressure reduction regulation, control
System inputs the size of the atmospheric pressure value in water level sensor to be measured；4) the pneumatic parameter value of input simulation washing machine highest inflow；
5) water level sensor to be measured reaches setup parameter value final vacuum and loses heart, and a cycle terminates；6) repeat the above steps 3) step 5)
Carry out cycle period test.
2. water level sensor durability test method described in accordance with the claim 1, it is characterised in that: be passed through 0.2Kpa in step 2)
The gas of air pressure.
3. water level sensor durability test method according to claim 2, it is characterised in that: input gas warp in step 3)
Level-one air pressure dropping valve switch and secondary accurate air valve regulating switch carry out reduction regulation.
4. water level sensor durability test method described in accordance with the claim 3, it is characterised in that: passed being connected to water level to be measured
The channel of sensor is equipped with the servo air pressure adjustment switch of accuracy controlling low pressure value and control water level sensor air pressure inside is filled
That deflates is precisely controlled switch valve.
5. water level sensor durability test method according to claim 4, it is characterised in that: in step 4), by accurate
Control switch valve controls water level sensor exhaust gas inside.
6. water level sensor durability test method according to claim 5, it is characterised in that: water level sensor to be measured reaches
After setup parameter value, system determines state of pressure keeping 5S, starts to deflate after 5S, deflation time 5S.
7. according to the described in any item water level sensor durability test methods of claim 3 to 6, it is characterised in that: level-one air pressure
It is depressured threshold switch and secondary accurate air valve regulating switch is set on the controller of test device, control is additionally provided on the controller
The start button switch and stop button switch that starting stops, being additionally provided with the work light and scram button of display working condition
Switch.
8. water level sensor durability test method according to claim 7, it is characterised in that: the controller is connected with meter
Number device, every carry out a cycle, counter numeration are primary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811046891.9A CN109186720A (en) | 2018-09-08 | 2018-09-08 | A kind of water level sensor durability test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811046891.9A CN109186720A (en) | 2018-09-08 | 2018-09-08 | A kind of water level sensor durability test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109186720A true CN109186720A (en) | 2019-01-11 |
Family
ID=64915296
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811046891.9A Pending CN109186720A (en) | 2018-09-08 | 2018-09-08 | A kind of water level sensor durability test method |
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Citations (7)
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| CN102183284A (en) * | 2011-04-14 | 2011-09-14 | 张广忠 | Liquid flow standard calibration device |
| CN102353429A (en) * | 2011-08-22 | 2012-02-15 | 上海理工大学 | High-precision performance detector of resonant mode water level sensor and test method thereof |
| CN202614611U (en) * | 2012-06-30 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Negative pressure endurance test device |
| CN104697782A (en) * | 2015-04-10 | 2015-06-10 | 东风汽车零部件(集团)有限公司 | Compressive testing bed for testing fatigue, durability and parameters of valve mechanism |
| US20160175511A1 (en) * | 2014-12-19 | 2016-06-23 | Fenwal, Inc. | Systems and methods for real time calibration of pump stroke volumes during a blood separation procedure |
| CN205909907U (en) * | 2016-07-26 | 2017-01-25 | 宁波创盛仪表有限公司 | Full -automatic pressure resistance test installation of gas flowmeter |
| CN107843318A (en) * | 2017-12-19 | 2018-03-27 | 广电计量检测（北京）有限公司 | A kind of liquid level gauge Endurance life test device and method |
-
2018
- 2018-09-08 CN CN201811046891.9A patent/CN109186720A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183284A (en) * | 2011-04-14 | 2011-09-14 | 张广忠 | Liquid flow standard calibration device |
| CN102353429A (en) * | 2011-08-22 | 2012-02-15 | 上海理工大学 | High-precision performance detector of resonant mode water level sensor and test method thereof |
| CN202614611U (en) * | 2012-06-30 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Negative pressure endurance test device |
| US20160175511A1 (en) * | 2014-12-19 | 2016-06-23 | Fenwal, Inc. | Systems and methods for real time calibration of pump stroke volumes during a blood separation procedure |
| CN104697782A (en) * | 2015-04-10 | 2015-06-10 | 东风汽车零部件(集团)有限公司 | Compressive testing bed for testing fatigue, durability and parameters of valve mechanism |
| CN205909907U (en) * | 2016-07-26 | 2017-01-25 | 宁波创盛仪表有限公司 | Full -automatic pressure resistance test installation of gas flowmeter |
| CN107843318A (en) * | 2017-12-19 | 2018-03-27 | 广电计量检测（北京）有限公司 | A kind of liquid level gauge Endurance life test device and method |
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Application publication date: 20190111 |