CN109313131A - Photo-electric dust sensor device and air-conditioning equipment - Google Patents
Photo-electric dust sensor device and air-conditioning equipment Download PDFInfo
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- CN109313131A CN109313131A CN201780035057.7A CN201780035057A CN109313131A CN 109313131 A CN109313131 A CN 109313131A CN 201780035057 A CN201780035057 A CN 201780035057A CN 109313131 A CN109313131 A CN 109313131A
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- 239000000428 dust Substances 0.000 title claims abstract description 232
- 238000004378 air conditioning Methods 0.000 title claims description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 146
- 238000012937 correction Methods 0.000 claims abstract description 108
- 238000001514 detection method Methods 0.000 claims abstract description 78
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000005286 illumination Methods 0.000 claims abstract description 18
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 description 18
- 238000004140 cleaning Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
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- Dispersion Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Photo-electric dust sensor device (1) of the invention includes: main body shell (8)；Illumination region (4)；Acceptance part (5)；Light signal correction portion (24), it is based in main body shell (8) and dust detection zone (SA) is that there is no or almost no carried out by optical signal to by optical signal by optical signal, and in the case where dust detection zone (SA) is dustless state by the second of acceptance part (5) output in the case where the dustless state of dust by the first of acceptance part (5) output；And dust test section (25), based on using light signal correction portion (24) have modified by optical signal, detect the presence or absence of dust or concentration.
Description
Technical field
The present invention relates to the air-conditioning equipments that photo-electric dust sensor device has the device.
Background technique
With the development of science and technology, air pollution is increasingly becoming problem.For example, propose to by with the smog of cigarette,
The particulates such as the particulates such as coal dust, the contaminant particles that micropowder is representative or house moss (will be in the present specification as detection
Dust-type (foreign matter) merging of object is abbreviated as " dust ".) caused by the photo-electric dust that is detected of air pollution pass
Sensor arrangement.For this photo-electric dust sensor device, exists and angularly consider from the pollutional condition of observation air
And the case where being equipped on the air-conditioning equipments such as air purifier or the air-conditioning with air-cleaning function.
For example, patent document 1 discloses a kind of photo-electric dust sensor device comprising illumination region, dust detection zone
Domain and acceptance part detect to obtain container irradiation to dust by the light of self-luminescent part in future, and receive to examine from dust by acceptance part
The reflected light for surveying region, to be detected to the dust etc. to swim in dust detection zone.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2000-356583 bulletin
Summary of the invention
The technical problems to be solved by the invention
But in the air-conditioning equipment equipped with above-mentioned photo-electric dust sensor device, the air containing dust due to
By the dust detection zone of photo-electric dust sensor device, therefore there are dust attachment or it is deposited in photo-electric dust sensing
Situation inside device device.
As described above, if photo-electric dust sensor device inside adhesive dust etc., the light for carrying out self-luminescent part is unrestrained
It penetrates and incident to acceptance part., inspection more than the amount of the light from dust detection zone that accordingly, there exist the amounts of the light received by acceptance part
The case where surveying accuracy decline.
Therefore, the present invention is to provide the high photo-electric dust sensor device of detection accuracy as project.
The means solved the problems, such as
In order to solve the above problems, photo-electric dust sensor device of the invention is characterised by comprising: body shell
Body；Illumination region is arranged in aforementioned body shell, to the dust detection zone irradiation light for detecting the dust in air；
Acceptance part is arranged in aforementioned body shell, and receives to project from above-mentioned illumination region and overflow in above-mentioned dust detection zone
Penetrate or through above-mentioned dust detection zone light, the light received is exported as by optical signal；Light signal correction portion, base
In in aforementioned body shell and above-mentioned dust detection zone be there is no or almost no the dustless states of above-mentioned dust the case where
Under by above-mentioned acceptance part export first by optical signal, and in the case where above-mentioned dust detection zone is above-mentioned dustless state by
The second of above-mentioned acceptance part output is modified to above-mentioned by optical signal by optical signal；And dust test section, based on by upper
It states light signal correction portion and has modified above-mentioned by optical signal, the presence or absence of above-mentioned dust or concentration are detected.
Invention effect
Photo-electric dust sensor device according to the present invention, is based in main body shell and dust detection zone is dustless
By acceptance part output first by optical signal in the case where state, and in the case where dust detection zone is dustless state by by
The second of light portion output is modified by optical signal to by optical signal.Thereby, it is possible to reduce attachment or be deposited in main body shell
Influence of the dust to light, improve detection accuracy.
Detailed description of the invention
Fig. 1 is the circuit block diagram of the photo-electric dust sensor device of first embodiment of the invention.
Fig. 2 is the figure being illustrated for the detecting state of the photo-electric dust sensor device to Fig. 1.
Fig. 3 is photo-electric dust sensing when indicating to make to have the air-conditioning equipment of the photo-electric dust sensor device of Fig. 1 to act
The figure of the output valve of device device.
Fig. 4 is the figure for indicating the output valve and correction value of the photo-electric dust sensor device of Fig. 1.
Fig. 5 is to indicate that the sensor output of the photo-electric dust sensor device of four embodiment of the invention is obtained with correction value
The figure of the relationship of time.
Fig. 6 is to indicate that the sensor output of the photo-electric dust sensor device of fifth embodiment of the invention is obtained with correction value
The figure of the relationship of time.
Fig. 7 is the sensor output and correction value acquisition time of the photo-electric dust sensor device of sixth embodiment of the invention
Relationship figure.
Fig. 8 is the sensor output and correction value acquisition time of the photo-electric dust sensor device of seventh embodiment of the invention
Relationship figure.
Fig. 9 is the circuit block diagram of the photo-electric dust sensor device of eighth embodiment of the invention.
Figure 10 is the circuit block diagram of previous photo-electric dust sensor device.
Figure 11 is the figure being illustrated for the detecting state of the photo-electric dust sensor device to Figure 10.
Specific embodiment
One embodiment of the present invention is illustrated according to attached drawing below.Also, in the following description, as needed
Using the term (such as term comprising "upper", "lower", " right side ", " left side ") for indicating specific direction or position, but these terms
Use be in order to referring to attached drawing make invention be readily appreciated that, not technical scope of the invention is made by the meaning of these terms
It limits.In addition, the following description substantially only illustrates, it is not intended to and the present invention, its applicable object or its purposes is made
It limits out.In addition, attached drawing is that schematically, ratio of each size etc. may not be consistent with reality.
Firstly, before explanation of the invention, referring to Fig.1 0, Figure 11 is to previous photo-electric dust sensor device 101
It is illustrated.
Photo-electric dust sensor device 101 as shown in Figure 10, including main body shell 108 and in the main body shell 108
The test section 110 and control unit 120 of setting.Test section 110 is made of illumination region 104 and acceptance part 105.Control unit 120 is by right
The driving circuit control unit 21 that the illumination region 104 of test section 110 is controlled is constituted.In addition, being set in the inside of main body shell 108
It is equipped with dust detection zone SA.
Illumination region 104 includes the light-emitting component 104a and driving circuit 104b for making light-emitting component 104a driving.In addition, by
Light portion 105 includes light receiving element 105a and the multiple amplifying circuits being connected in series between light receiving element 105a and control unit 120
G1, G2 are to Gn (n be 2 or more integer).
In above-mentioned photo-electric dust sensor device 101, if starting to carry out dust detection, the driving of control unit 120
Circuit control portion 121, which controls driving circuit 104b, drives light-emitting component 104a, and light (such as pulsed light) Le is detected to dust
Region SA irradiation.Also, it receives by the light receiving element of the dust D diffused light Lr from dust detection zone SA reflected
105a exports the diffused light Lr received as by optical signal.From light receiving element 105a output by optical signal by amplifying
Circuit G1, G2 are sent after amplifying to Gn to control unit 120.
Photo-electric dust sensor device 101 detects dust based on the output valve by optical signal for being sent to control unit 120
The presence or absence of dust D of detection zone SA or concentration, the output valve level by optical signal based on light receiving element 105a, detection pass through
The partial size of the dust D of dust detection zone SA.
Herein, it in the case where the dust D of dust detection zone SA is few, is reflected by the dust of dust detection zone SA
The light Le for carrying out self-luminescent part 104 is few, therefore the light income of light receiving element 105a is few.On the other hand, passing through dust detection zone
In the case that the dust D of SA is more, reflected by the dust of dust detection zone SA it is more come the light Le of self-luminescent part 104, therefore by
The light income of optical element 105a is more.
That is, as shown in figure 11, in the small situation of the output valve by optical signal for being sent to control unit 120 (referring to the α 1 of (b)
Region) under, photo-electric dust sensor device 101 is judged as that dust detection zone SA dust is few (or nothing).On the other hand, it is sending out
It send to the big situation of the output valve by optical signal of control unit 120 (referring to 2 region α of (b)), photo-electric dust sensor device
101 are judged as that dust detection zone SA dust is more (or having).Also, as long as the dust of dust detection zone SA is more, correspondingly
Output valve by optical signal is big.
(first embodiment)
Next, the photo-electric dust sensor device 1 to first embodiment of the invention is illustrated.As shown in Figure 1, the
The photo-electric dust sensor device 1 of one embodiment by main body shell 8 and the test section 10 being arranged in the main body shell 8 and
Control unit 20 is constituted.In addition, being provided with dust detection zone SA in main body shell 8.
Test section 10 includes illumination region 4 and acceptance part 5.
Illumination region 4 by light-emitting component 4a (such as light emitting diode (LED)) and drive light-emitting component 4a driving portion 4b
It constitutes.Light-emitting component 4a issues constant irradiation light Le using driving circuit 4b.Driving circuit 4b and LED circuit power supply, LED electricity
Road GND (ground line) connection.
Also, illumination region 4 is provided with illumination region lens and illumination region slit (not shown), can effectively by from shine
The light Le (light beam) that element 4a is projected is irradiated to dust detection zone SA.
Acceptance part 5 by light receiving element 5a (such as light emitting diode) and multiple (being herein three) amplifying circuit G1, G2,
G3 is constituted.The light Lr received is transformed to electric signal (being denoted as below by optical signal) by light receiving element 5a.Amplifying circuit G1 to G3
It is connected in series between light receiving element 5a and control unit 20, it will be by optical signal amplification.What is be exaggerated is utilized acceptance part 5 by optical signal
It is sent to control unit 20.
Also, by optical signal due to very small, using multiple amplifying circuit G1, G2, G3, will be amplified to by optical signal
The level that can be handled by control unit 20.
In addition, acceptance part 5 is provided with acceptance part slit and acceptance part lens (not shown), it can be effectively by light member
Part 5a receives the light Lr from dust detection zone SA.
Control unit 20 is made of microcomputer (being denoted as microcomputer below) etc., including at driving circuit control unit 21, signal
Reason portion 22 and communication unit 23.
Driving circuit control unit 21 controls the driving circuit 4b of illumination region 4.
Signal processing part 22 includes light signal correction portion 24 and dust test section 25.Be sent to signal processing part 22 by
Optical signal (analog signal) is inputted to analog-to-digital converter (A/D converter) and is transformed to digital signal.
Light signal correction portion 24 is modified to what is sent from acceptance part 5 by optical signal.Specifically, by optical signal
Correction portion 24 is from main body shell 8 and the case where the dustless state of dust detection zone SA is does not have (or almost without) dust
Under by acceptance part 5 export first by the output valve Vi of optical signal, subtract dust detection zone SA be dustless state feelings
Under condition second correction value Vp is determined as by the obtained value of the output valve Vs of optical signal by acceptance part 5 exports.Also, by optical signal
Correction portion 24 subtracts determined correction value Vp from the output valve by optical signal that acceptance part 5 is sent, and calculating is repaired by optical signal
Positive output value.
Dust test section 25 based on by light signal correction portion 24 it is modified by optical signal be by optical signal amendment export
Value detects the presence or absence of dust of dust detection zone SA or concentration.Specifically, dust test section 25 is in the amendment by optical signal
Output valve is to be judged as in dust detection zone SA that dust is few (or nothing), by optical signal in defined threshold situation below
Output valve is corrected more than in the case where defined threshold, is judged as in dust detection zone SA that dust is more (or having).Dust test section
The dust testing result that 25 dust detection zone SA is obtained is sent to communication unit 23.
In the building up inside of main body shell 8 or in the case where be attached with dust, as shown in Fig. 2, increasing to Vs from Vi.The increasing
Dosage no matter dust detection zone SA amount of dust it is how all the same, therefore the value that Vs obtains will be subtracted from Vi and calculated as amendment
Value reduces the influence of the dust of attachment etc. in main body shell 8 from detecting by subtracting in optical signal.
Communication unit 23 is grey to photo-electric by the dust testing result of the dust detection zone SA sent from dust test section 25
The external of dust sensor device 1 sends.In addition, transmitted information is received from the external of photo-electric dust sensor device 1, to
Signal processing parts 22 etc. are sent.
However, in the actual use environment, being difficult to realize dustless state or the state close to dustless state.In turn, in order to
Judge whether it is dustless state, it is necessary to which in addition the dust sensor of not adhesive dust is set.
Showing drafting in Fig. 3 and being input to makes to be equipped with above-mentioned photo-electric dust sensor device 1 and has air cleaning
The figure of the signal of the A/D converter of signal processing part 22 when the air-conditioning equipment movement of function.In the Fig. 3, with depicted as solid lines
The output valve by optical signal inputted to A/D converter, is drawn with a dashed line by low-pass filter etc. to the output by optical signal
Value carry out treated figure.
As shown in figure 3, being input to the amplitude of the output valve by optical signal of A/D converter very when air-conditioning equipment starts
(Δ V1) greatly, but change over time small.This is considered as playing a role to change over time by air-cleaning function to become net
Change air.That is, in the case where being input to the amplitude of the output valve by optical signal of A/D converter becomes sufficiently small (Δ V2),
Becoming dust is zero or considerably less state.
Therefore, in above-mentioned photo-electric dust sensor device 1, using inputting to signal processing part 22 by optical signal
Output valve determines whether dustless state.Specifically, the deviation of the light signal value output exported in during the prescribed period is calculated,
Calculated light signal value output deviation be defined threshold situation below under, be determined as dustless state.It is real first
Apply in the photo-electric dust sensor device 1 of mode, by optical signal output valve deviation according to exporting in during the prescribed period
It is calculated by the difference of the maxima and minima of the output valve of optical signal.If it is determined that being dustless state, then light signal correction portion 24
Calculate second by optical signal output valve Vs, based on this second by optical signal output valve Vs and first by optical signal output valve
Vi determines correction value Vp.It is defeated to calculate the amendment shown in Fig. 7 by optical signal based on the correction value Vp determined for dust test section 25
Be worth out, detect dust detection zone SA dust whether there is or not etc..
In the method, since the second output valve Vs by optical signal can be calculated in the operating of air-conditioning equipment,
The amount of dust that dust detection zone SA can be corresponded to, calculates accurate correction value Vp.Also, first by optical signal output valve
Vi is interior using main body shell 8 and dust detection zone SA is the theoretical output valve by optical signal under dustless state status.That is,
Detect dust detection zone SA the presence or absence of dust it is equal before, precalculate first by optical signal output valve Vi and be stored in control
In portion 20 processed.
As described above, using the photo-electric dust sensor device 1 of first embodiment, based in main body shell 8 and
Dust detection zone SA be in the case where dustless state by acceptance part 5 export first by non-nothing in optical signal and main body shell 8
Dirt state but dust detection zone SA be in the case where dustless state by acceptance part 5 export second by optical signal, light is believed
It number is modified.Thereby, it is possible to reduce the influence of the light from the dust for adhering in main body shell 8 or accumulating, detection is improved
Precision.
In addition, calculate by acceptance part 5 during the prescribed period in export the output valve by optical signal deviation, calculated
Deviation by the output valve of optical signal is in defined threshold situation below, and judgement dust detection zone SA is dustless state.By
This, can not use other dust sensor, easily be determined that whether dust detection zone SA is dustless state.
In addition, according to the difference of the maxima and minima of the output valve by optical signal exported in during the prescribed period calculate by
The deviation of the output valve of optical signal, so as to mitigate the processing load that dustless state determines.
In addition, correction value Vp is determined by output valve Vi, Vs of optical signal based on first, second, from the output by optical signal
Value subtracts correction value Vp, thus allows for the amendment by optical signal.Thereby, it is possible to reduce to come to adhere to or be deposited in main body
The influence of the light of dust in shell 8 improves detection accuracy.
And, if be not limited to the above method for the judgement of dustless state, for example, it is also possible to using unattached dust its
He determines dust sensor.
In addition, first is not limited to theoretical value by the output valve Vi of optical signal, as long as possible, it is also possible to measured value.
(second embodiment)
The photo-electric dust sensor device 1 of second embodiment of the present invention and the photo-electric dust of first embodiment sense
The difference of device device 1 is, is believed according to the standard deviation calculation light of the interior output valve by optical signal exported during the prescribed period
Number output valve deviation.
In this manner it is achieved that according to the standard deviation calculation light of the interior output valve by optical signal exported during the prescribed period
The deviation of the output valve of signal can reduce the processing load that dustless state determines.
(third embodiment)
The photo-electric dust sensor device 1 of third embodiment of the present invention and the photo-electric dust of first embodiment sense
The difference of device device 1 is, by optical signal output valve deviation according to the output by optical signal exported in during the prescribed period
The quartile deviation of value calculates.
In this manner it is achieved that passing through the quartile deviation meter according to the interior output valve by optical signal exported during the prescribed period
The deviation for calculating the output valve by optical signal can reduce the processing load that dustless state determines.
(the 4th embodiment)
The photo-electric dust sensor device 1 of 4th embodiment of the invention and the photo-electric dust of first embodiment sense
The difference of device device 1 is, as shown in figure 5, being determined as dustless state and calculating correction value by light signal correction portion 24
After Vp1, in the case where being determined as dustless state again and calculating correction value Vp2 by light signal correction portion 24, by correction value
Vp2 is updated to from Vp1.Also, the appended drawing reference T1 in Fig. 5 indicates specified time limit.
In this manner it is achieved that based on latest computed go out correction value Vp detection dust detection zone SA dust whether there is or not etc., energy
Enough improve detection accuracy.
(the 5th embodiment)
The photo-electric dust sensor device 1 of 5th embodiment of the invention and the photo-electric dust of the 4th embodiment sense
The difference of device device 1 is, as shown in fig. 6, segmentation subtract from the output valve by optical signal correction value Vp subtract calculation.
In this manner it is achieved that subtracting calculation by what segmentation carried out subtracting correction value Vp from the output valve by optical signal, even if repairing
Positive value Vp is influenced to be widely varied by noise contribution, also can ignore that the influence of noise contribution, therefore can be improved detection
Precision.
In addition, with it is direct subtracted from the output valve by optical signal correction value Vp the case where subtracting calculation compared with, can subtract
A possibility that few user is judged as abnormal operation.
Also, the segmentation of correction value Vp subtracts to be referred at last, is to the value equal with correction value Vp from the value less than correction value Vp
Only, gradually increase correction value Vp (reduction calculated value) and what is carried out subtracts calculation.By gradually increasing reduction calculated value in this manner, from
And it can be avoided and the output valve by optical signal is carried out excessively subtracting calculation.
(sixth embodiment)
The photo-electric dust sensor device 1 of sixth embodiment and the photo-electric dust sensor device 1 of the 5th embodiment
Difference be, as shown in fig. 7, subtracting the case where value that correction value Vp is obtained is to become negative from the output valve by optical signal
Under, correction value Vp is changed to " zero ".
In the photo-electric dust sensor device 1 of sixth embodiment, for example, the amount of the dust of dust detection zone SA
It reduces, during the output valve by optical signal being represented by dotted lines is less than the specified time limit T2 of correction value Vp1, by correction value Vp
It is set as " zero ", and is modified value Vp decision again, determines new correction value Vp3.Thereby, it is possible to accurately detect dust detection
The dust of region SA whether there is or not etc..
(the 7th embodiment)
The photo-electric dust sensor device 1 of 7th embodiment and the photo-electric dust sensor device 1 of sixth embodiment
Difference be, as shown in figure 8, in the output valve by optical signal less than first by the output valve Vi of optical signal the case where (period
T3 under), the first output valve Vi by optical signal will be changed to by the output valve of optical signal.
In this manner it is achieved that the output valve by optical signal less than first by the output valve Vi of optical signal in the case where, energy
Enough by the way that the first output valve Vi by optical signal will be changed to by the output valve of optical signal, it is negative to mitigate the processing that correction value Vp is calculated
Lotus.
(the 8th embodiment)
The photo-electric dust sensor device 1 of 8th embodiment and the photo-electric dust sensor device 1 of first embodiment
Difference be, signal processing part 22 is provided with storage unit 26 as shown in Figure 9.
Storage unit 26 is made of nonvolatile memory, is stored by the calculated correction value Vp in light signal correction portion 24.
By the way that storage unit 26 is arranged in the manner described above, the processing load of correction value Vp calculating can reduce.
Also, in the photo-electric dust sensor device 1 of the 8th embodiment, initially by light after only power supply is connected
The correction value Vp that signal correction portion 24 determines is stored in storage unit 26.Therefore, it is able to suppress the memory capacity of storage unit 26.
(the 9th embodiment)
The photo-electric dust sensor device 1 of 9th embodiment and the photo-electric dust sensor device 1 of the 8th embodiment
Difference be, in advance in storage unit 26 store correction value Vp, be initially based on after being connected until power supply by optical signal
During until the correction value Vp decision of correction portion 24, the amendment by optical signal is carried out based on pre-stored correction value Vp.
In this manner it is achieved that by the way that correction value Vp is stored in storage unit 26 in advance, for example, even if being difficult to calculate
In the case where the two output valve Vs by optical signal, can also detect with high precision the dust of dust detection zone SA whether there is or not etc..
The photo-electric dust sensor device 1 of above-mentioned first to the 9th embodiment, can be applied to air purifier, band
There are the air-conditioning equipments such as the air-conditioning of air-cleaning function.
The present invention and embodiment are summarized as follows.
Photo-electric dust sensor device 1 of the invention is characterised by comprising:
Main body shell 8；
Illumination region 4 is arranged in aforementioned body shell 8, by light to the dust detection zone for the dust for being used to detect in air
SA irradiation；
Acceptance part 5 is arranged in aforementioned body shell 8, receives to project from above-mentioned illumination region 4 and in above-mentioned dust detection zone
The light that above-mentioned dust detection zone SA is diffused or penetrated in SA, the light received is exported as by optical signal；
Light signal correction portion 24, is based in aforementioned body shell 8 and above-mentioned dust detection zone SA is not or almost
Do not have in the case where the dustless state of above-mentioned dust by above-mentioned acceptance part 5 export first by optical signal Vi and in above-mentioned dust
Detection zone SA be in the case where above-mentioned dustless state by above-mentioned acceptance part 5 export second by optical signal Vs, to above-mentioned light
Signal is modified；And
Dust test section 25, based on by above-mentioned light signal correction portion 24 it is modified above-mentioned by optical signal, to above-mentioned dust
Whether there is or not or concentration detected.
According to the above configuration, based in main body shell 8 and dust detection zone SA be dustless state in the case where by by
Light portion 5 export first by optical signal and exported in the case where dust detection zone SA is dustless state by acceptance part 5 the
Two, by optical signal, are modified to by optical signal.Thus, it is possible to reduce from the dust for adhering in main body shell 8 or accumulating
The influence of light, can be improved detection accuracy.
In addition, the photo-electric dust sensor device 1 of an embodiment calculated by above-mentioned light signal correction portion 24 it is above-mentioned
Acceptance part 5 during the prescribed period in the deviation of the above-mentioned output valve by optical signal that exports, calculated above-mentioned by optical signal
The deviation of output valve is to be determined as above-mentioned dustless state in defined threshold situation below.
According to above embodiment, without using other dust sensor, it will be able to easily be determined that dust detection zone
Whether domain SA is dustless state.
In addition, the photo-electric dust sensor device 1 of an embodiment is according to the interior above-mentioned light exported during the prescribed period
The difference of the maxima and minima of the output valve of signal calculates the deviation of the above-mentioned output valve by optical signal.
According to above embodiment, the processing load that dustless state determines can be reduced.
In addition, the photo-electric dust sensor device 1 of an embodiment is according to the interior above-mentioned light exported during the prescribed period
The deviation of the above-mentioned output valve by optical signal of the standard deviation calculation of the output valve of signal.
According to above embodiment, the processing load that dustless state determines can be reduced.
In addition, the photo-electric dust sensor device 1 of an embodiment is according to the interior above-mentioned light exported during the prescribed period
The quartile deviation of the output valve of signal calculates the deviation of the above-mentioned output valve by optical signal.
According to above embodiment, the processing load that dustless state determines can be reduced.
In addition, the photo-electric dust sensor device 1 of an embodiment is by above-mentioned light signal correction portion 24 based on above-mentioned
First, second is determined correction value Vp by output valve Vi, Vs of optical signal.
According to above embodiment, can determine reduce from the dust for adhering in main body shell 8 or accumulating
The correction value of the influence of light.
In addition, the photo-electric dust sensor device 1 of an embodiment is subtracted from the above-mentioned output valve by optical signal by upper
The correction value Vp for stating the decision of light signal correction portion 24, to carry out the above-mentioned amendment by optical signal.
According to above embodiment, the influence of the light from the dust for adhering in main body shell 8 or accumulating can be reduced,
It can be improved detection accuracy.
In addition, the segmentation of photo-electric dust sensor device 1 of an embodiment carries out the above-mentioned output valve by optical signal
Subtract calculation.
According to above embodiment, though correction value Vp due to noise contribution influence and change very big, also can ignore that
The influence of noise contribution, therefore can be improved detection accuracy.
In addition, the photo-electric dust sensor device 1 of an embodiment makes above-mentioned correction value Vp from less than above-mentioned correction value
The value of Vp to become with the above-mentioned equal value of correction value Vp and gradually increase, carry out the above-mentioned output valve by optical signal to be segmented
Subtract calculation.
It can be improved inspection due to can be avoided the output valve excessively subtracted by optical signal according to above embodiment
Survey precision.
In addition, the photo-electric dust sensor device 1 of an embodiment is subtracted from the above-mentioned output valve by optical signal
In the case where stating the value that correction value Vp is obtained and becoming negative, the above-mentioned output valve by optical signal is changed to above-mentioned first light and is believed
Number output valve Vi.
According to above embodiment, become the feelings of negative subtracting the value that correction value Vp is obtained from the output valve by optical signal
Under condition, the first output valve Vi by optical signal will be changed to by the output valve of optical signal.Thereby, it is possible to accurately detect dust inspection
Survey the presence or absence of dust of region SA etc..
In addition, the photo-electric dust sensor device 1 of an embodiment is subtracted from the above-mentioned output valve by optical signal
In the case where stating the value that correction value Vp is obtained and becoming negative, above-mentioned correction value is determined again using above-mentioned light signal correction portion 24
Vp。
According to above embodiment, the case where the value for subtracting correction value Vp from the output valve by optical signal becomes negative
Under, correction value Vp is determined again.Thereby, it is possible to accurately detect the dust of dust detection zone SA whether there is or not etc..
In addition, the photo-electric dust sensor device 1 of an embodiment is in the above-mentioned output valve by optical signal less than above-mentioned
In the case where first output valve by optical signal, the above-mentioned output valve by optical signal is changed to above-mentioned first by the defeated of optical signal
It is worth out.
According to above embodiment, the processing load of correction value Vp calculating can reduce.
In addition, the photo-electric dust sensor device 1 of an embodiment has the storage for storing above-mentioned correction value Vp
Portion 26.
According to above embodiment, the processing load of correction value Vp calculating can reduce.
In addition, the photo-electric dust sensor device 1 of an embodiment is being carried out based on above-mentioned light signal correction portion 24
The above-mentioned amendment by optical signal when, above-mentioned correction value Vp is stored in above-mentioned storage unit 26.
According to above embodiment, the processing load of correction value Vp calculating can reduce.
In addition, the photo-electric dust sensor device 1 of an embodiment is initially believed by above-mentioned light after only connecting power supply
The above-mentioned correction value Vp that number correction portion 24 determines is stored in above-mentioned storage unit 26.
According to above embodiment, it is able to suppress the memory capacity of storage unit 26.
In addition, above-mentioned repair is stored in advance in above-mentioned storage unit 26 in the photo-electric dust sensor device 1 of an embodiment
Positive value Vp is based on during initially by above-mentioned light signal correction portion 24 determining above-mentioned correction value Vp after connecting until power supply
Pre-stored above-mentioned correction value Vp carries out the above-mentioned amendment by optical signal by above-mentioned light signal correction portion 24.
According to above embodiment, even for example, the case where being difficult to calculate the second output valve Vs by optical signal, also can
The dust of enough high-precision detection dust detection zone SA whether there is or not etc..
Air-conditioning equipment of the invention has above-mentioned photo-electric dust sensor device 1.
According to the above configuration, the air-conditioning equipment with the high photo-electric dust sensor device 1 of detection accuracy can be obtained.
The constituent element illustrated in the above mentioned first to ninth implementations can also be appropriately combined, in addition, certainly can also
Suitably to select, replace or delete.
Description of symbols
1 photo-electric dust sensor device
4 illumination regions
4a light-emitting component
4b driving circuit
5 acceptance parts
5a light receiving element
8 main body shells
10 test sections
20 control units
21 driving circuit control units
22 signal processing parts
23 communication units
24 light signal correction portions
25 dust test sections
26 storage units
G1, G2, G3 amplifying circuit
SA dust detection zone
Vp correction value
Output valve of the Vi first by optical signal
Output valve of the Vs second by optical signal
Claims (17)
1. a kind of photo-electric dust sensor device characterized by comprising
Main body shell；
Illumination region is arranged in the main body shell, to the dust detection zone irradiation light for detecting the dust in air；
Acceptance part is arranged in the main body shell, receives to project from the illumination region and in the dust detection zone
Diffusion or the light for penetrating the dust detection zone, the light received is exported as by optical signal；
Light signal correction portion is based in the main body shell and the dust detection zone is there is no or almost no institutes
It states in the case where the dustless state of dust and first is by optical signal and in the dust detection zone by the acceptance part exports
In the case where the dustless state by the acceptance part export second by optical signal, be modified to described by optical signal；With
And
Dust test section, based on by optical signal, having to the dust described in being had modified as light signal correction portion
Nothing or concentration are detected.
2. photo-electric dust sensor device according to claim 1, which is characterized in that
Light signal correction portion calculate as the acceptance part during the prescribed period in export described in by optical signal output valve
Deviation be determined as described in the case where the deviation of the calculated output valve by optical signal is defined threshold situation below
Dustless state.
3. photo-electric dust sensor device according to claim 2, which is characterized in that
By the difference of the maxima and minima of the output valve of optical signal according to output in during the prescribed period, calculate it is described by
The deviation of the output valve of optical signal.
4. photo-electric dust sensor device according to claim 2, which is characterized in that
By the defeated of optical signal described in standard deviation calculation according to being exported in during the prescribed period by the output valve of optical signal
The deviation being worth out.
5. photo-electric dust sensor device according to claim 2, which is characterized in that
By optical signal described in quartile deviation calculating according to being exported in during the prescribed period by the output valve of optical signal
The deviation of output valve.
6. photo-electric dust sensor device according to any one of claim 1 to 5, which is characterized in that
Light signal correction portion is determined correction value by the output valve of optical signal based on described first, second.
7. photo-electric dust sensor device according to claim 6, which is characterized in that
Light signal correction portion is carried out and subtracting the correction value determined from the output valve by optical signal
The amendment by optical signal.
8. photo-electric dust sensor device according to claim 7, which is characterized in that
The segmentation progress output valve by optical signal subtracts calculation.
9. photo-electric dust sensor device according to claim 8, which is characterized in that
Make the correction value from be less than the correction value value gradually increased to the value equal with the correction value is become, be segmented into
The row output valve by optical signal subtracts calculation.
10. photo-electric dust sensor device according to claim 7, which is characterized in that
In the case where subtracting the value that the correction value obtains from the output valve by optical signal becomes negative, by the light
The output valve of signal is changed to the described first output valve by optical signal.
11. photo-electric dust sensor device according to any one of claims 7 to 10, which is characterized in that
In the case where subtracting the value that the correction value obtains from the output valve by optical signal becomes negative, institute is utilized again
It states light signal correction portion and determines the correction value.
12. photo-electric dust sensor device according to claim 7, which is characterized in that
It, will be described by optical signal in the case where the output valve by optical signal is less than the described first output valve by optical signal
Output valve be changed to the described first output valve by optical signal.
13. the photo-electric dust sensor device according to any one of claim 6 to 12, which is characterized in that
With the storage unit for storing the correction value.
14. photo-electric dust sensor device according to claim 13, which is characterized in that
When having carried out the amendment by optical signal by light signal correction portion, the correction value is stored in the storage
In portion.
15. photo-electric dust sensor device described in 3 or 14 according to claim 1, which is characterized in that
It is initially stored in the storage unit by the correction value that light signal correction portion determines after only power supply is connected.
16. photo-electric dust sensor device described in any one of 3 to 15 according to claim 1, which is characterized in that
The correction value is stored in advance in the storage unit, initially by light signal correction portion after connecting until power supply
During determining the correction value, the light is carried out by light signal correction portion based on the pre-stored correction value
The amendment of signal.
17. a kind of air-conditioning equipment, which is characterized in that
With photo-electric dust sensor device described in any one of claims 1 to 16.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-116930 | 2016-06-13 | ||
| JP2016116930 | 2016-06-13 | ||
| PCT/JP2017/013636 WO2017217078A1 (en) | 2016-06-13 | 2017-03-31 | Photoelectric dust sensor device and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109313131A true CN109313131A (en) | 2019-02-05 |
Family
ID=60664345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780035057.7A Pending CN109313131A (en) | 2016-06-13 | 2017-03-31 | Photo-electric dust sensor device and air-conditioning equipment |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6559346B2 (en) |
| CN (1) | CN109313131A (en) |
| WO (1) | WO2017217078A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7008252B2 (en) * | 2017-08-29 | 2022-01-25 | パナソニックＩｐマネジメント株式会社 | Particle detection sensor |
| JP7033980B2 (en) * | 2018-03-28 | 2022-03-11 | 能美防災株式会社 | Smoke detector and smoke detection system |
| JP6710840B2 (en) * | 2018-11-21 | 2020-06-17 | 株式会社マツシマメジャテック | Panel dust monitoring device and method, panel dust monitoring system |
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| JP2011086058A (en) * | 2009-10-14 | 2011-04-28 | Sharp Corp | Smoke sensor and fire alarm |
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| JP2007047029A (en) * | 2005-08-10 | 2007-02-22 | Sharp Corp | Dust sensor and air cleaner |
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| AU2008323626B2 (en) * | 2007-11-15 | 2014-09-18 | Garrett Thermal Systems Limited | Particle detection |
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| JP5870810B2 (en) * | 2012-03-28 | 2016-03-01 | 村田機械株式会社 | Yarn traveling information acquisition device and yarn processing device |
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2017
- 2017-03-31 WO PCT/JP2017/013636 patent/WO2017217078A1/en active Application Filing
- 2017-03-31 JP JP2018523338A patent/JP6559346B2/en active Active
- 2017-03-31 CN CN201780035057.7A patent/CN109313131A/en active Pending
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| JP2000356583A (en) * | 1999-06-14 | 2000-12-26 | Sharp Corp | Dust sensor |
| CN101388133A (en) * | 2007-07-05 | 2009-03-18 | 夏普株式会社 | Photoelectric smoke sensor and electronic equipment |
| JP2011086058A (en) * | 2009-10-14 | 2011-04-28 | Sharp Corp | Smoke sensor and fire alarm |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6559346B2 (en) | 2019-08-14 |
| WO2017217078A1 (en) | 2017-12-21 |
| JPWO2017217078A1 (en) | 2019-04-18 |
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