CN106872326A - The automatic zero-setting method of dust sensor - Google Patents
The automatic zero-setting method of dust sensor Download PDFInfo
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- CN106872326A CN106872326A CN201710237344.8A CN201710237344A CN106872326A CN 106872326 A CN106872326 A CN 106872326A CN 201710237344 A CN201710237344 A CN 201710237344A CN 106872326 A CN106872326 A CN 106872326A
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- 239000000428 dust Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 230000005611 electricity Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 10
- 238000000746 purification Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of automatic zero-setting method of dust sensor, dust sensor includes：Housing, drainage part, detection part, light source component and switch member, housing has air inlet and gas outlet, drainage part, detection part and light source component are each provided in housing, drainage part is used to drive air-flow to flow to gas outlet from air inlet, detection part is used for gathering the quantity of dust in air-flow, switch member is used to open or close air inlet, and automatic zero-setting method comprises the following steps：S1：Braking drainage part, closes air inlet；S2：After the setting time of inlet close first, dust quantity is gathered by detection part and collection value is recorded as；S3：The collection value is set to the current zero point of dust sensor.Automatic zero-setting method according to embodiments of the present invention, using the detection characteristic of dust sensor, zero point that can be periodically to dust sensor is automatically adjusted so that the reliability and accuracy of detection of family expenses dust detection have obtained significantly improving.
Description
Technical field
The present invention relates to sensor testing equipment technical field, more particularly to a kind of automatic zero set side of dust sensor
Method.
Background technology
Dust sensor is one of indispensable sensor of common purification device, and common purification device has clarifier, fresh air system
System and some other home appliance with purification function etc..
Dust sensor is used to monitor the dust concentration in air ambient.Under normal circumstances, sensor uses a period of time
After null offset phenomenon, null offset amount can be produced to have difference with the when and where for using, sensor use time is more long,
Use environment is more severe, and null offset amount is bigger.The null offset amount of dust sensor can influence the accuracy of detection of sensor, because
This is in use for some time, it is necessary to carry out zeroing operation to dust sensor, but the zeroing of general dust sensor cannot
Carry out being carried out, it is necessary to return factory in user's family, it is very inconvenient.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of powder
The automatic zero-setting method of dust sensor, according to the automatic zero-setting method, zero point that can be periodically to dust sensor is adjusted.
The automatic zero-setting method of dust sensor according to embodiments of the present invention, the dust sensor includes：Housing, draw
Stream part, detection part, light source component and switch member, the housing have air inlet and gas outlet, the drainage part, the detection part
It is each provided in the housing with the light source component, the drainage part is used to drive air-flow to flow to the outlet from the air inlet
Mouthful, and detection part described in airflow passes, the detection part is by receiving the reflected light of dust after the light source component electrified light emitting
To gather the quantity of dust, the switch member is used to open or close the air inlet, the automatic zero set side of dust sensor
Method comprises the following steps：S1：The drainage part is braked, the air inlet is closed；S2：When the inlet close first sets
Between after, gathered by the detection part and dust quantity and be recorded as collection value；S3：The collection value is set to the dust sensing
The current zero point of device.
The automatic zero-setting method of dust sensor according to embodiments of the present invention, using the detection characteristic of dust sensor,
Zero point that can be periodically to dust sensor is automatically adjusted, and self-regulating process is very simple so that family expenses dust is examined
The reliability and accuracy of detection of survey have obtained significantly improving.
In certain embodiments, during zeroing, the light source component continues electrified light emitting.Light source component is persistently powered hair
Light can ensure to count optical noise during zeroing so that zeroing result is more accurate.
In certain embodiments, the detection part records a collection value at interval of the second setting time in step s 2,
The multiple collection values of detection part record；In step s3, the average value of multiple collection values is set to the dust sensor
Current zero point.Carrying out multi collect can ensure the accuracy of collection value, reduce because accidental error is to collection value result
Harmful effect.
In certain embodiments, in step s3, maximum and minimum value in multiple collection values are removed into rear, remaining collection
The average value of value is set to the current zero point of the dust sensor.Such collection value processing method can cause the result that returns to zero
It is more accurate.
In certain embodiments, first setting time is 3-5 minutes.First setting time ensure that detection when,
The gas of enclosure interior keeps stabilization, improves accuracy of detection.
In certain embodiments, second setting time is 10 seconds.Second setting time can during ensure that zeroing
To carry out multi collect, the accuracy of zeroing result is improve.
In certain embodiments, the switch member is the switch gate being rotatably connected on the housing.Such knot
Structure is relatively simple and easy production.
In certain embodiments, the drainage part is fan.
In certain embodiments, the drainage part is electric heating element.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is dust sensor zeroing view according to embodiments of the present invention, and wherein switch member is in and closes shape
State；
Fig. 2 is dust sensor working state schematic representation according to embodiments of the present invention, and wherein switch member is in open shape
State；
Fig. 3 is the adjusting zero method procedure chart of dust sensor according to embodiments of the present invention.
Reference：
Dust sensor 100, housing 1, air inlet 2, gas outlet 3, drainage part 4, detection part 5, light source component 6, switch member 7,
Test chamber 8.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
The automatic zero-setting method of dust sensor according to embodiments of the present invention, the method are described below with reference to Fig. 1-Fig. 3
Automatic zero set can be carried out for light scattering dust sensor, especially in some purifier dust sensors, carried out automatic
Zeroing operation.
Dust sensor according to embodiments of the present invention, as shown in figure 1, dust sensor 100 includes housing 1, drainage part
4th, detection part 5, light source component 6 and switch member 7.Housing 1 limits test chamber 8, and housing 1 has air inlet 2 and gas outlet 3,
Detection air enters from air inlet 2, is flowed out from venthole 3.Drainage part 4, detection part 5 and light source component 6 are each provided in housing 1, are drawn
Stream part 4 is used to drive air-flow to flow to gas outlet 3 from air inlet 2, and drainage part 4 can be fan guides air-flow to be flowed from air inlet 2
To gas outlet 3 to be detected, drainage part 4 can also be such as resistance wire electric heating element, and gas from air inlet is caused by heating
Mouth 2 flows to gas outlet 3 and reaches testing goal, and the form to drainage part 4 is not particularly limited herein.
The dust sensor 100 that the embodiment of the present invention is selected, air inlet can control to close or open.Specifically,
Switch member 7 is used to open or close air inlet 2, and switch member 7 both can be the switch gate being rotatably connected on housing 1,
The gas flow control valve at air inlet 2 can be mounted in, be not specifically limited here.
When detection part 5 is adopted by receiving the reflected light of dust after airflow passes detection part 5, and the electrified light emitting of light source component 6
Collect the quantity of dust.
The automatic zero-setting method of dust sensor according to embodiments of the present invention, as shown in figure 3, comprising the following steps：
S1：Braking drainage part 4, closes air inlet 2；
S2：After air inlet 2 closes the first setting time, dust quantity is gathered by detection part 5 and collection value is recorded as；
S3：The collection value is set to the current zero point of dust sensor 100.
It is to be appreciated that under normal operating condition, dust sensor 100 guides air-flow to be flowed from air inlet 2 using drainage part 4
Dust detection is carried out to air inlet 2.Under zeroing state, braking drainage part 4 closes air inlet 2, and first is closed in air inlet 2
After setting time, i.e., after the steady air current in test chamber 8, dust quantity is gathered by detection part 5 and collection value is recorded as, then will
Collection value is set to the current zero point of dust sensor 100, thus, because long-time uses the generation of dust sensor 100
Null offset amount will not produce influence to the measurement of the dust sensor 100 after zeroing.
The automatic zero-setting method of dust sensor according to embodiments of the present invention, the detection using dust sensor 100 is special
Property, zero point that can be periodically to dust sensor 100 is automatically adjusted, and self-regulating process is very simple so that family expenses
The reliability and accuracy of detection of dust detection have obtained significantly improving.
In certain embodiments, during zeroing, light source component 6 continues electrified light emitting.Light source component 6 continues electrified light emitting
Can ensure to count optical noise during zeroing so that zeroing result is more accurate.
In certain embodiments, detection part 5 records a collection value, detection at interval of the second setting time in step s 2
Part 5 records multiple collection values；In step s3, the average value of multiple collection values is set to current zero of dust sensor 100
Point.Carrying out multi collect can ensure the accuracy of collection value, reduce the harmful effect due to accidental error to collection value result.
In certain embodiments, in step s3, maximum and minimum value in multiple collection values are removed into rear, remaining collection
The average value of value is set to the current zero point of dust sensor 100.Such collection value processing method can cause the result that returns to zero
It is more accurate.
In certain embodiments, the first setting time is 3-5 minutes.The scope of the first setting time can also be not limited to 3-5
Minute, as long as ensure that the gas stabilization in test chamber 8.
In certain embodiments, the second setting time is 10 seconds.The length of the second setting time determines the individual of collection value
Number, therefore the second setting time meets collection requirement, it is not limited to 10 seconds.
An automatic zero-setting method for specific embodiment is introduced referring to Fig. 1-Fig. 2.
As shown in figure 1, in the embodiment, dust sensor 100 include housing 1, drainage part 4, detection part 5, light source component 6 with
And switch member 7.Housing 1 limits test chamber 8, and with air inlet 2 and gas outlet 3, drainage part 4, detection part 5 and light source component 6
It is each provided in housing 1, drainage part 4 is fan, when fan is opened, because the swabbing action of fan can cause air-flow from air inlet
2 enter test chamber 8, and test chamber 8 is left from gas outlet 3, and switch member 7 is the switch gate being rotatably connected on housing 1, switch
Door is for opening or closing air inlet 2.
The zeroing process of dust sensor 100 is as follows：
(1)：Dust sensor 100 closes fan by controlling I/O port, and simultaneously closes off air inlet 2；
(2)：Dust sensor 100 opens light source component 6 by controlling I/O port, and during zeroing, remains light source
Part 6 lights；
(3)：Wait 3-5 minutes, wait gas stabilization in test chamber 8；
(4)：The population for once being exported by detection part 5, continuous record ten times were read every 10 seconds；
(5)：Taking ten collection values carries out computing of averaging, and obtains average value M；
(6)：M is set to the current zero point of dust sensor 100.
(7)：Zeroing process terminates to open fan and air inlet 2, dust sensor 100 is recovered use state.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of automatic zero-setting method of dust sensor, it is characterised in that the dust sensor includes：Housing, drainage part,
Detection part, light source component and switch member, the housing have air inlet and gas outlet, the drainage part, the detection part and institute
State light source component to be each provided in the housing, the drainage part is used to drive air-flow to flow to the gas outlet from the air inlet, and
Detection part described in airflow passes, the detection part is gathered by receiving the reflected light of dust after the light source component electrified light emitting
The quantity of dust, the switch member is used to open or close the air inlet, and the automatic zero-setting method of dust sensor includes
Following steps：
S1：The drainage part is braked, the air inlet is closed；
S2：After the setting time of the inlet close first, dust quantity is gathered by the detection part and collection is recorded as
Value；
S3：The collection value is set to the current zero point of the dust sensor.
2. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that during zeroing,
The light source component continues electrified light emitting.
3. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that the spy in step s 2
Survey part and record a collection value, the multiple collection values of detection part record at interval of the second setting time；
In step s3, the average value of multiple collection values is set to the current zero point of the dust sensor.
4. the automatic zero-setting method of dust sensor according to claim 3, it is characterised in that will be many in step s3
In individual collection value maximum and minimum value remove after, the average value of remaining collection value be set to current zero of the dust sensor
Point.
5. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that first setting time
It is 3-5 minutes.
6. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that second setting time
It is 10 seconds.
7. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that the switch member is can to turn
Switch gate on the housing is connected dynamicly.
8. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that the drainage part is wind
Fan.
9. the automatic zero-setting method of dust sensor according to claim 1, it is characterised in that the drainage part is sent out for electricity
Warmware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237344.8A CN106872326B (en) | 2017-04-12 | 2017-04-12 | Automatic zero setting method of dust sensor |
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| CN201710237344.8A CN106872326B (en) | 2017-04-12 | 2017-04-12 | Automatic zero setting method of dust sensor |
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| CN106872326B CN106872326B (en) | 2020-05-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108169089A (en) * | 2017-12-31 | 2018-06-15 | 湖北兴业华德威安全信息技术股份有限公司 | A kind of laser dust sensor and dust concentration sampling zero formula measuring method of school |
| CN108362616A (en) * | 2018-02-08 | 2018-08-03 | 芜湖美智空调设备有限公司 | Dust sensor and its calibration method, airhandling equipment |
| CN109557004A (en) * | 2017-09-27 | 2019-04-02 | 田果成 | Detect cavity configuration, detection device, capture apparatus and terminal |
| CN110987739A (en) * | 2019-12-27 | 2020-04-10 | 厦门通创检测技术有限公司 | Particulate matter analyzer for engine |
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