CN206114479U - Dust detection device - Google Patents
Dust detection device Download PDFInfo
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- CN206114479U CN206114479U CN201621182619.XU CN201621182619U CN206114479U CN 206114479 U CN206114479 U CN 206114479U CN 201621182619 U CN201621182619 U CN 201621182619U CN 206114479 U CN206114479 U CN 206114479U
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- 239000000428 dust Substances 0.000 title claims abstract description 118
- 238000001514 detection method Methods 0.000 title claims abstract description 77
- 230000005611 electricity Effects 0.000 claims description 5
- 241000883990 Flabellum Species 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a dust detection device, include: casing, piezoelectricity air pump and dust detection subassembly. The casing is equipped with first air inlet and first gas outlet, the casing inner chamber passes through first air inlet first gas outlet communicates with each other with external environment. The piezoelectricity air pump with the dust detection subassembly all sets up on the casing. The piezoelectricity air pump be used for with the casing outside air passes through first air inlet is sent into in the casing. The dust detection subassembly is used for detecting the dust content of the air in the casing. Foretell dust detection device sends into the outside air to the casing in through the piezoelectricity air pump, does not easily assemble the dust in the piezoelectricity air pump, like this alright result in the relatively poor phenomenon of dust detection accuracy with easy deposit dust on the flabellum of overcoming traditional air -blower to make the dust detection accuracy improve greatly.
Description
Technical field
The utility model is related to dust detection technique field, more particularly, to a kind of dust investigating.
Background technology
Dust investigating generally adopts light scattering principle, by laser or infrared radiation air particle, collects anti-
Optical signal after penetrating, the quantity or concentration of particulate in air are calculated using Principle of Statistics.Traditional dust investigating
It is required to, with the gas channel for introducing finely ground particles air, the air containing particulate matter is fed through into powder by gas channel
The test side of dust sensor carries out illumination detection.However, traditional dust investigating will contain particle often through air blast
The air of thing is incorporated in gas channel, after air blast long-time use, more dust is easily deposited on the flabellum of air blast, drum
The dust accumulated on fan leaf may be mixed in gas channel, and has influence on the essence of the detection data of dust sensor
Exactness.
The content of the invention
Based on this, the utility model is the defect for overcoming prior art, there is provided a kind of powder that can improve detection accuracy
Dust detection device.
Its technical scheme is as follows：Dust investigating, including：Housing, the housing is provided with the first air inlet and goes out with first
Gas port, the housing cavity is communicated by first air inlet, first gas outlet with external environment；Piezoelectricity air pump and powder
Dirt detection components, the piezoelectricity air pump is respectively provided with the housing with the dust detection components, and the piezoelectricity air pump is used for
The hull outside air is sent in the housing by first air inlet, the dust detection components are used to detect
The dust content of the air in the housing.
Wherein in one embodiment, the piezoelectricity air pump is arranged in the housing with the dust detection components
Portion, is provided with gas channel in the housing, the piezoelectricity air pump has the second air inlet and the second gas outlet, second air inlet
Mouth is communicated with first air inlet, and second gas outlet communicates with the gas channel, and the dust detection components are located at
The sidepiece of the gas channel, test side and the gas channel of the dust detection components are oppositely arranged.
Wherein in one embodiment, dust investigating also includes flow sensor, and the flow sensor is arranged on
In the gas channel, the flow sensor is used to obtain the air velocity in the gas channel.
Wherein in one embodiment, open region is provided with the housing, the shell nozzle area is covered with control circuit
Plate, the control board is electrically connected with the flow sensor, the dust detection components and the piezoelectricity air pump；It is described
Enclosure interior is equiped with fixed mount, and the fixed mount is described for the dust detection components, the piezoelectricity air pump to be fixed on
In housing, the fixed mount cooperatively forms the gas channel with the control board.
Wherein in one embodiment, the hull outside is connected with protection cap, and the protection cap covers at the control
Circuit board.
Wherein in one embodiment, dust investigating also includes driving voltage judge module and alarm module, described
Driving voltage judge module is connected with the driving power supply of the alarm module, the piezoelectricity air pump, and the driving voltage judges mould
Whether block is used to judge the driving voltage of the piezoelectricity air pump more than the first preset value, and the alarming device is used in the piezoelectricity
The driving voltage of air pump carries out actuation of an alarm when being more than the first preset value.
Wherein in one embodiment, dust investigating also includes that air velocity judge module controls mould with driving voltage
Block, the air velocity judge module is connected with the flow sensor, the driving voltage control module and the voltage electrical
The driving power supply of pump is connected, and the air velocity judge module is used to judge whether the air velocity in the gas channel is more than
Second preset value, when the air velocity that the driving voltage control module is used in the gas channel is more than the second preset value
Reduce the driving voltage of the driving power supply.
Wherein in one embodiment, the air velocity judge module is additionally operable to judge the air in the gas channel
Whether flow velocity is less than the 3rd preset value, and the air velocity that the driving voltage control module is additionally operable in the gas channel is little
Increase the driving voltage of the driving power supply when three preset values.
Wherein in one embodiment, the flow sensor includes the first thermistor, the second thermistor and voltage
Detection module, first thermistor is connected in series in constant voltage power supply circuit with second thermistor, the voltage inspection
Surveying module is used to obtain the first thermistor both end voltage or the second thermistor both end voltage, and described first is hot
Quick resistance is successively set in the gas channel with second thermistor along airflow direction.
Wherein in one embodiment, the flow sensor includes the first thermistor, the second thermistor, potentiometer
With voltage detection module, first thermistor is connected in series in constant voltage power supply circuit with second thermistor, described
First thermistor is connected in parallel after being connected in series with second thermistor with two anchor leg ends of the potentiometer,
The voltage detection module is used to obtain test lead, the Yi Jisuo between first thermistor and second thermistor
The voltage between the movable leadframe end of potentiometer is stated, first thermistor is with second thermistor along airflow direction
In being successively set on the gas channel.
The advantage or principle of preceding solution are illustrated below：
1st, above-mentioned dust investigating, is fed through extraneous air in housing by piezoelectricity air pump, in piezoelectricity air pump not
It is easy to gather dust, so just can overcome easily deposit on the flabellum of traditional air blast dust to cause dust to detect accuracy
Poor phenomenon, so that dust detection accuracy is greatly improved.
2nd, it is provided with open region in housing.Shell nozzle area is covered with control board.Control board and flow sensor,
Dust detection components and piezoelectricity air pump are electrically connected with.Enclosure interior is equiped with fixed mount.Fixed mount be used for by dust detection components,
Piezoelectricity air pump is fixed in housing, and fixed mount cooperatively forms gas channel with control board.Thus, by control board with
For fixing the fixed mount of dust detection components, piezoelectricity air pump cooperatively forming gas channel so that dust investigating volume
Minimize as far as possible, and the Detection results of dust are relatively stable.
3rd, hull outside is connected with protection cap.Protection cap covers at control board.Protection cap is avoided that control board
Rubbed, broken equivalent damage, control board can be played a protective role.
4th, dust investigating also includes driving voltage judge module and alarm module.The driving voltage judge module with
The alarm module, the driving power supply of the piezoelectricity air pump are connected.The driving voltage judge module is used to judge the piezoelectricity
Whether the driving voltage of air pump is more than the first preset value.The alarming device is used to be more than in the driving voltage of the piezoelectricity air pump
Actuation of an alarm is carried out during the first preset value.When driving voltage judge module, to determine the driving voltage of piezoelectricity air pump pre- more than first
If during value, then illustrating that the dust gathered in gas channel is caused because long-time is using more dust has been gathered in gas channel
Windage increases, and the driving voltage for so just causing piezoelectricity air pump increases.It is electric in the driving of the piezoelectricity air pump by alarming device
Carry out after actuation of an alarm when pressure is more than the first preset value, just can timely notify that staff is carried out clearly to dust investigating
Science and engineering is made.
5th, after the air velocity in gas channel increases, control reduces the driving voltage of piezoelectricity air pump, makes piezoelectricity air pump
The air mass flow being sent in housing is reduced.And work as after the reduction of the air velocity in gas channel, control rises high-voltage electrical apparatus pump
Driving voltage, makes voltage electrical be pumped into the increase of the air mass flow in housing.Thus, spray in the voltage electrical infusion pump unit time can be caused
The gas flow for going out is consistent all the time, so that it is guaranteed that the accuracy of dust investigating dust content detection.
Description of the drawings
Fig. 1 is the one of which structural representation of the dust investigating described in the utility model embodiment；
Fig. 2 is the one of which structural representation of the dust investigating described in the utility model embodiment；
Fig. 3 is the one of which structural representation of the dust investigating described in the utility model embodiment；
Fig. 4 be the utility model embodiment described in dust investigating in flow sensor one of which structural representation
Figure；
Fig. 5 be the utility model embodiment described in dust investigating in flow sensor one of which structural representation
Figure.
Description of reference numerals：
10th, housing, the 11, first air inlet, the 12, first gas outlet, 13, gas channel, 14, open region, 20, voltage electrical
Pump, the 21, second air inlet, the 22, second gas outlet, 30, dust detection components, 40, flow sensor, the 41, first thermistor,
42nd, the second thermistor, 43, voltage detection module, 44, potentiometer, 50, control board, 60, fixed mount, 70, protection cap.
Specific embodiment
Embodiment of the present utility model is described in detail below：
As shown in figure 1, the dust investigating described in the utility model embodiment, including：Housing 10, piezoelectricity air pump 20 with
Dust detection components 30.The housing 10 is provided with the first air inlet 11 and the first gas outlet 12, and the inner chamber of the housing 10 passes through institute
State the first air inlet 11, first gas outlet 12 to communicate with external environment.The piezoelectricity air pump 20 and the dust detection group
Part 30 is arranged on the housing 10.
The piezoelectricity air pump 20 is described for the extraneous air of the housing 10 to be sent to by first air inlet 11
In housing 10.Piezoelectricity air pump 20 in the present embodiment expands or shrinks pump chamber inner chamber body when mainly working by vibrational structure
Mode extraneous air is fed through in the housing 10 of dust investigating.Specifically, in pump chamber inner chamber body expansion process, dust
Air outside detection means is drawn in pump chamber by the first air inlet 11, the second air inlet 21；Pump chamber inner chamber body reduced
Cheng Zhong, pump room air is expelled in the housing 10 of dust investigating by exhaust passage and the second gas outlet 22.It is described
Dust detection components 30 are used to detect the dust content of the air in the housing 10.Dust detection components 30 in the present embodiment
Can be using laser or infrared detection component.
Above-mentioned dust investigating, is fed through extraneous air in housing 10 by piezoelectricity air pump 20, piezoelectricity air pump 20
In be not easy to gather dust, easily deposition dust so just can be overcome on the flabellum of traditional air blast to cause dust detection essence
The poor phenomenon of exactness, so that dust detection accuracy is greatly improved.
In the present embodiment, the piezoelectricity air pump 20 is arranged in the housing 10 with the dust detection components 30
Portion. it is provided with gas channel 13 in the housing 10.The piezoelectricity air pump 20 has the second air inlet 21 and the second gas outlet 22.Institute
State the second air inlet 21 to communicate with first air inlet 11, second gas outlet 22 communicates with the gas channel 13.Institute
State sidepiece of the dust detection components 30 positioned at the gas channel 13, test side and the air-flow of the dust detection components 30
Passage 13 is oppositely arranged.When air containing particulate matter flows through gas channel 13, the test side of dust detection components 30 is by sending out
Particulate matter in the laser penetrated or infrared radiation air, and the optical signal after reflection is collected, calculated using Principle of Statistics
The quantity or concentration of particulate in air.Position of the dust detection components 30 in housing 10 can be arranged according to actual conditions
(as shown in Fig. 2 Fig. 2 is the enforcement that the position in the housing 10 of dust detection components 30 is different from dust investigating described in Fig. 1
Example).
Wherein, dust investigating also includes flow sensor 40.The flow sensor 40 is arranged on the air-flow and leads to
In road 13, the flow sensor 40 is used to obtain the air velocity in the gas channel 13.Dust investigating long-time
After use, a large amount of dust is easily gathered in gas channel 13, the dust gathered in gas channel 13 will have influence on gas channel 13
In air velocity, got after air velocity by flow sensor 40, just can be used to judge dust in gas channel 13
Deposition, it is possible to timely cleaning operation is carried out to dust investigating, to improve the accuracy of dust content detection.
Refer in Fig. 3, the housing 10 and be provided with open region 14.The open region 14 of the housing 10 is covered with control board
50.The control board 50 is electrical with the flow sensor 40, the dust detection components 30 and the piezoelectricity air pump 20
Connection.Fixed mount 60 is equiped with inside the housing 10.The fixed mount 60 is used for the dust detection components 30, the pressure
Electrical pump 20 is fixed in the housing 10, and the fixed mount 60 cooperatively forms the gas channel with the control board 50
13.Thus, by control board 50 with the fixed mount 60 for fixing dust detection components 30, piezoelectricity air pump 20 coordinating shape
Into gas channel 13 so that dust investigating volume is minimized as far as possible, and the Detection results of dust are relatively stable.
The housing 10 is externally connected to protection cap 70.The protection cap 70 covers at the control board 50.Protection
Lid 70 is avoided that control board 50 is rubbed, breaks equivalent damage, and control board 50 can be played a protective role.
Dust investigating also includes driving voltage judge module and alarm module.The driving voltage judge module and institute
State alarm module, the driving power supply of the piezoelectricity air pump 20 is connected.The driving voltage judge module is used to judge the piezoelectricity
Whether the driving voltage of air pump 20 is more than the first preset value.The alarming device is used for the driving voltage in the piezoelectricity air pump 20
More than carrying out actuation of an alarm during the first preset value.First preset value can be according in actual conditions, and air velocity is subject to larger resistance
The driving voltage value relative set of corresponding piezoelectricity air pump 20, is not repeated during power.When driving voltage judge module is determined
The driving voltage of piezoelectricity air pump 20 be more than the first preset value when, then illustrate gas channel 13 in due to long-time using gathered compared with
Many dusts, the dust gathered in gas channel 13 is so that windage increase, the driving voltage for so just causing piezoelectricity air pump 20 increases.
By alarming device the piezoelectricity air pump 20 driving voltage be more than the first preset value when carry out actuation of an alarm after, just can and
When notify that staff carries out cleaning work to dust investigating.
Dust investigating also includes air velocity judge module and driving voltage control module.The air velocity judges
Module is connected with the flow sensor 40.The driving power supply phase of the driving voltage control module and the piezoelectricity air pump 20
Even.The air velocity judge module is used to judge whether the air velocity in the gas channel 13 is more than the second preset value.
The air velocity that the driving voltage control module is used in the gas channel 13 reduces described when being more than the second preset value
The driving voltage of driving power supply.The air velocity judge module is additionally operable to judge that the air velocity in the gas channel 13 is
It is no to be less than the 3rd preset value.Second preset value, the 3rd preset value can be according to the corresponding piezoelectricity of actually required air velocity
The driving voltage value of air pump 20 carries out relative set.The driving voltage control module is additionally operable in the gas channel 13
Air velocity increases the driving voltage of the driving power supply when being less than three preset values.Thus, when the air in gas channel 13
After flow velocity increase, control reduces the driving voltage of piezoelectricity air pump 20, makes piezoelectricity air pump 20 be sent to the air mass flow in housing 10
Reduce.And work as after the reduction of the air velocity in gas channel 13, control rises the driving voltage of high-voltage electrical apparatus pump 20, makes piezoelectricity air pump
20 are sent to the increase of the air mass flow in housing 10.Thus, the gas flow sprayed in the unit interval of piezoelectricity air pump 20 can be caused
All the time it is consistent, so that it is guaranteed that the accuracy of dust investigating dust content detection.
In the present embodiment, the driving voltage judge module, the alarm module, the air velocity judge module and institute
State driving voltage control module and be arranged at the control board 50.Thus, dust investigating small volume can be caused as far as possible
Type, and it is easy to assembly and disassembly.
Fig. 4 is referred to, the flow sensor 40 includes the first thermistor 41, the second thermistor 42 and voltage detecting
Module 43.First thermistor 41 is connected in series in constant voltage power supply circuit with second thermistor 42, and first hot
The thermistor 42 of quick resistance 41 and second is the thermistor of positive temperature coefficient.The voltage detection module 43 is used to obtain described
The both end voltage of first thermistor 41 or the both end voltage of the second thermistor 42.First thermistor 41 with it is described
Second thermistor 42 is successively set in the gas channel 13 along airflow direction.Air velocity in gas channel 13
After increase, the first thermistor 41 can be increased with the resistance difference of the second thermistor 42, the electricity of the detection of voltage detection module 43
Pressure will change, and according to the voltage control of the detection of voltage detection module 43 driving voltage of piezoelectricity air pump 20 is reduced, and make pressure
Electrical pump 20 is sent to the air mass flow in housing 10 and reduces.And work as after the reduction of the air velocity in gas channel 13, first is hot
Quick resistance 41 can diminish with the resistance difference of the second thermistor 42, and the voltage of the detection of voltage detection module 43 equally can become
Change, the driving voltage of high-voltage electrical apparatus pump 20 is risen according to the voltage control of the detection of voltage detection module 43, send into piezoelectricity air pump 20
Increase to the air mass flow in housing 10.Thus, regardless of dust investigating external environment condition, the unit interval of piezoelectricity air pump 20
The gas flow of interior ejection is consistent all the time, so that it is guaranteed that the accuracy of dust investigating dust content detection.
Fig. 5 is referred to, in another middle one embodiment, the flow sensor 40 includes the first thermistor 41, second
Thermistor 42, potentiometer 44 and voltage detection module 43.First thermistor 41 is gone here and there with second thermistor 42
Connection is connected in constant voltage power supply circuit.First thermistor 41 be connected in series with second thermistor 42 after with the electricity
Two anchor leg ends of position device 44 are connected in parallel.The voltage detection module 43 be used for obtain first thermistor 41 with
Test lead between second thermistor 42 and the voltage between the movable leadframe end of the potentiometer 44.Described
One thermistor 41 is successively set in the gas channel 13 with second thermistor 42 along airflow direction.Work as bridge
After energization, the first thermistor 41 and the second thermistor 42 cause it to flow through electric current reduction, directly due to heating, temperature rising
To reaching balance.Potentiometer 44 is now adjusted, makes bridge output voltage be zero.When fluid starts flowing in gas channel 13,
On fluid first thermistor 41 of public attention due to faster heat dissipation causes temperature can be than the temperature of second thermistor 42 of lower public attention
Degree is low, causes electric bridge unbalance, and fluid-flow rate is bigger in gas channel 13, and electric bridge imbalance degree is bigger.By voltage
Detection module 43 measures the voltage imbalance numerical value of bridge, just can measure the temperature difference of two resistance, and then measurable outlet
Rate of flow of fluid in circulation road 13.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be defined by claims.
Claims (10)
1. dust investigating, it is characterised in that include：
Housing, the housing is provided with the first air inlet and the first gas outlet, and the housing cavity passes through first air inlet, institute
State the first gas outlet to communicate with external environment；
Piezoelectricity air pump and dust detection components, the piezoelectricity air pump is respectively provided with the housing with the dust detection components,
The piezoelectricity air pump is used to the hull outside air is sent in the housing by first air inlet, the dust
Detection components are used to detect the dust content of the air in the housing.
2. dust investigating according to claim 1, it is characterised in that the piezoelectricity air pump and the dust detection group
Part is arranged at the enclosure interior, is provided with gas channel in the housing, and the piezoelectricity air pump has the second air inlet and the
Two gas outlets, second air inlet is communicated with first air inlet, and second gas outlet communicates with the gas channel,
The dust detection components are located at the sidepiece of the gas channel, test side and the gas channel of the dust detection components
It is oppositely arranged.
3. dust investigating according to claim 2, it is characterised in that also including flow sensor, the flow velocity is passed
Sensor is arranged in the gas channel, and the flow sensor is used to obtain the air velocity in the gas channel.
4. dust investigating according to claim 3, it is characterised in that open region, the shell are provided with the housing
Body open region is covered with control board, the control board and the flow sensor, the dust detection components and institute
State the electric connection of piezoelectricity air pump；The enclosure interior is equiped with fixed mount, the fixed mount be used for by the dust detection components,
The piezoelectricity air pump is fixed in the housing, and the fixed mount cooperatively forms the gas channel with the control board.
5. dust investigating according to claim 4, it is characterised in that the hull outside is connected with protection cap, institute
State protection cap and cover at the control board.
6. dust investigating according to claim 4, it is characterised in that also including driving voltage judge module and warning
Module, the driving voltage judge module is connected with the driving power supply of the alarm module, the piezoelectricity air pump, described to drive electricity
Whether pressure judge module is used to judge the driving voltage of the piezoelectricity air pump more than the first preset value, and the alarming device is used for
The driving voltage of the piezoelectricity air pump carries out actuation of an alarm when being more than the first preset value.
7. the dust investigating according to any one of claim 4～6, it is characterised in that also judge including air velocity
Module and driving voltage control module, the air velocity judge module is connected with the flow sensor, the driving voltage
Control module is connected with the driving power supply of the piezoelectricity air pump, and the air velocity judge module is used to judge the gas channel
In air velocity whether be more than the second preset value, the driving voltage control module is used for the air in the gas channel
Flow velocity reduces the driving voltage of the driving power supply when being more than the second preset value.
8. dust investigating according to claim 7, it is characterised in that the air velocity judge module is additionally operable to sentence
Whether the air velocity broken in the gas channel is less than the 3rd preset value, and the driving voltage control module is additionally operable to described
Air velocity in gas channel increases the driving voltage of the driving power supply when being less than three preset values.
9. dust investigating according to claim 3, it is characterised in that the flow sensor includes the first temperature-sensitive electricity
Resistance, the second thermistor and voltage detection module, first thermistor is connected in series in perseverance with second thermistor
In source circuit, the voltage detection module is used to obtain the first thermistor both end voltage or second temperature-sensitive electricity
Resistance both end voltage, first thermistor is successively set on the air-flow and leads to second thermistor along airflow direction
In road.
10. dust investigating according to claim 3, it is characterised in that the flow sensor includes the first temperature-sensitive
Resistance, the second thermistor, potentiometer and voltage detection module, first thermistor is connected with second thermistor
In being connected to constant voltage power supply circuit, first thermistor be connected in series with second thermistor after with the potentiometer
Two anchor leg ends are connected in parallel, and the voltage detection module is used to obtain first thermistor with second temperature-sensitive
Test lead between resistance and the voltage between the movable leadframe end of the potentiometer, first thermistor with it is described
Second thermistor is successively set in the gas channel along airflow direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621182619.XU CN206114479U (en) | 2016-10-27 | 2016-10-27 | Dust detection device |
| PCT/CN2016/105719 WO2018076405A1 (en) | 2016-10-27 | 2016-11-14 | Dust measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621182619.XU CN206114479U (en) | 2016-10-27 | 2016-10-27 | Dust detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114479U true CN206114479U (en) | 2017-04-19 |
Family
ID=58525429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621182619.XU Active CN206114479U (en) | 2016-10-27 | 2016-10-27 | Dust detection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206114479U (en) |
| WO (1) | WO2018076405A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290098A (en) * | 2016-10-27 | 2017-01-04 | 广东奥迪威传感科技股份有限公司 | Dust investigating |
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|---|---|---|---|---|
| CN109444011A (en) * | 2018-12-27 | 2019-03-08 | 常熟市德虞矿山机电有限公司 | A kind of hair dirt device for direct-reading dust concentration calibrating installation |
| CN111122403A (en) * | 2019-12-19 | 2020-05-08 | 沈阳风驰软件股份有限公司 | Railway coal transportation presses down dirt effect detecting system |
| TWI747132B (en) * | 2020-01-08 | 2021-11-21 | 研能科技股份有限公司 | Health detection device having gas detection function |
| TWI738183B (en) * | 2020-01-16 | 2021-09-01 | 研能科技股份有限公司 | Air detection system |
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| US7129847B2 (en) * | 2003-08-06 | 2006-10-31 | Edwards Systems Technology, Inc. | Detector with dust filter and airflow monitor |
| KR100602698B1 (en) * | 2004-08-31 | 2006-07-20 | 삼성전자주식회사 | Air conditioner |
| CN204758444U (en) * | 2015-06-30 | 2015-11-11 | 连云港岚宝电子科技有限公司 | PM2. 5 particle detection device |
| CN205445973U (en) * | 2016-02-25 | 2016-08-10 | 广东奥迪威传感科技股份有限公司 | Piezoelectricity micro air pump structure |
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| CN106442249B (en) * | 2016-10-27 | 2024-03-22 | 广东奥迪威传感科技股份有限公司 | Dust detection device |
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2016
- 2016-10-27 CN CN201621182619.XU patent/CN206114479U/en active Active
- 2016-11-14 WO PCT/CN2016/105719 patent/WO2018076405A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290098A (en) * | 2016-10-27 | 2017-01-04 | 广东奥迪威传感科技股份有限公司 | Dust investigating |
| CN106290098B (en) * | 2016-10-27 | 2024-04-02 | 广东奥迪威传感科技股份有限公司 | Dust detection device |
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| Publication number | Publication date |
|---|---|
| WO2018076405A1 (en) | 2018-05-03 |
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