CN104198349A - Dust detection device and dust detection method - Google Patents
Dust detection device and dust detection method Download PDFInfo
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- CN104198349A CN104198349A CN201410476778.XA CN201410476778A CN104198349A CN 104198349 A CN104198349 A CN 104198349A CN 201410476778 A CN201410476778 A CN 201410476778A CN 104198349 A CN104198349 A CN 104198349A
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- 239000000428 dust Substances 0.000 title claims abstract description 118
- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 230000003287 optical effect Effects 0.000 claims abstract description 48
- 238000004020 luminiscence type Methods 0.000 claims description 59
- 238000000034 method Methods 0.000 claims description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 18
- 238000012216 screening Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 10
- 238000002834 transmittance Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
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- 238000004364 calculation method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 208000030303 breathing problems Diseases 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention relates to a dust detection device and a dust detection method. The dust detection device comprises a light-emitting component, a detection channel, a light interception component and a control circuit, wherein the light-emitting component emits detecting light; the detection channel is arranged on a light path of the detecting light and used for enabling the detecting light to illuminate suspended dust entering the detection channel from a convection air vent of the detection channel; the optical axis of the light interception component and the optical axis of the light-emitting component form a preset angle, and the light interception component is used for receiving scatter light, being in a preset angle with the optical axis of the light-emitting component, scattered by the detecting light through the suspended dust, and generating corresponding electrical signals according to optical signals of the scatter light; the control circuit is connected with the light-emitting component and the light interception component and used for driving the light-emitting component, receiving the electrical signals sent by the light interception component, and calculating the concentration of dust in the detection channel according to the electrical signals. The dust detection device has the advantages of small size, low power consumption, low cost, good application convenience and high detection precision.
Description
Technical field
The present invention relates to a kind of sensor technology, particularly relate to a kind of dust investigating and dust detection method.
Background technology
Economic development, living standard improves constantly, but environmental pollution is more and more serious, and in air, dust suspension concentration significantly increases, and the frequency of haze weather is also rising.PM2.5 wherein (diameter is less than the finely ground particles of 2.5um) is closely bound up with health, has directly caused the significantly rising of the various breathing problem incidences of disease.Continuous deterioration in view of air quality, air purifying process and air purification series products have obtained swift and violent development, people also more and more pay close attention to the numerical value of PM2.5 simultaneously, this just needs a high-precision dust investigating to embody intuitively airborne dust concentration situation, need to purify room air determining whether, or whether the own residing environment of assessment is applicable to carrying out some activity.
At present there is the device that a kind of mode that adopts suction-type spectral scan detects market.The accuracy of detection of this dust investigating is high, and the distinguishable concentration that goes out different-diameter particle, but high cost only limits to special measurement equipment and use, and is not suitable for civilian in enormous quantities.
Summary of the invention
In view of the above problems, proposed the present invention so that a kind of overcome the problems referred to above or the dust investigating addressing the above problem at least in part and dust detection method are provided, in the situation of accuracy of detection, reduced costs guaranteeing.
According to first aspect of the present invention, a kind of dust investigating is provided, comprising:
Luminescence component, described luminescence component sends detection light;
Sense channel, described sense channel is arranged in the light path of described detection light, so that the convection current blow vent that described detection light irradiates via described sense channel enters the dust suspension in described sense channel;
Light-receiving module, the optical axis of described light-receiving module and the optical axis of described luminescence component are predetermined angle, to receive, described detection light is that scatter via described dust suspension is the scattered beam of described predetermined angle with optical axis described luminescence component, and generates corresponding electric signal according to the light signal of described scattered beam;
Control circuit, described control circuit is connected with described light-receiving module with described luminescence component respectively, the described electric signal sending for receiving described light-receiving module, and calculate the dust concentration in described sense channel according to described electric signal.
According to second aspect of the present invention, a kind of dust detection method is provided, comprising:
Luminescence component sends detection light, with the convection current blow vent irradiating via sense channel, enters the dust suspension in described sense channel;
Light-receiving module receives described detection light, and via described dust suspension, that scatter and optical axis described luminescence component are the scattered beam of predetermined angle, and wherein, the optical axis of described light-receiving module and the optical axis of described luminescence component are described predetermined angle;
Described light-receiving module generates corresponding electric signal according to the light signal of described scattered beam;
Control circuit receives the described electric signal that described light-receiving module sends;
Described control circuit, according to described electric signal, calculates the dust concentration in described sense channel.
By technique scheme, the technical scheme that the embodiment of the present invention provides at least has following advantages:
The technical scheme that the embodiment of the present invention provides consists of luminescence component and light-receiving module setting, and the optical axis of light-receiving module and the optical axis of described luminescence component are the light channel structure of predetermined angle, realized based on optical detection principle, according to the power of described scattered beam, calculate the dust concentration in described sense channel.Hence one can see that, and the technical scheme that the embodiment of the present invention provides is light principle due to what adopt, and compared with the device of existing structure, its volume is little, and cost is low, be easy to carry, and low in energy consumption; In addition, the principle of the technical scheme that the embodiment of the present invention provides based on optical scattering, its accuracy of detection is high.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.
Accompanying drawing explanation
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing is only for the object of preferred implementation is shown, and do not think limitation of the present invention.And in whole accompanying drawing, by identical reference symbol, represent identical parts.In the accompanying drawings:
Fig. 1 shows the structural representation of the dust investigating that the embodiment of the present invention one provides;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 shows the structural representation of control circuit in a kind of dust investigating that the present embodiment one provides;
Fig. 4 shows the fundamental diagram of a kind of dust investigating that the present embodiment one provides;
Fig. 5 shows the schematic flow sheet of a kind of dust detection method that the present embodiment two provides.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1,2 and 3, the embodiment of the present invention one provides the structural representation of dust investigating.As shown in Figure 1, described dust investigating comprises: luminescence component 1, sense channel 2, light-receiving module 3 and control circuit 4 (as described in Fig. 2 and Fig. 3).Wherein, described luminescence component 1 sends detection light.Described sense channel 2 is arranged in the light path of described detection light, so that the convection current blow vent that described detection light irradiates via described sense channel 2 enters the dust suspension in described sense channel 2.The optical axis of the optical axis of described light-receiving module 3 and described luminescence component 1 is predetermined angle, to receive the optical axis with described luminescence component 1 that described detection light scatters via described dust suspension, be the scattered beam of described predetermined angle, and generate corresponding electric signal according to the light signal of described scattered beam.Described control circuit 4 is connected with described light-receiving module 3 with described luminescence component 1 respectively, for driving described luminescence component, and receives the described electric signal that described light-receiving module 3 sends, and calculates the dust concentration in described sense channel according to described electric signal.
The technical scheme that the present embodiment provides consists of luminescence component and light-receiving module setting, and the optical axis of light-receiving module and the optical axis of described luminescence component are the light channel structure of predetermined angle, realized based on optical detection principle, according to the power of described scattered beam, calculate the dust concentration in described sense channel.Hence one can see that, and the technical scheme that the present embodiment provides is light principle due to what adopt, and compared with the device of existing structure, its volume is little, and cost is low, be easy to carry, and low in energy consumption; In addition, the principle of the technical scheme that the present embodiment provides based on optical scattering, its accuracy of detection is high.
Wherein, the predetermined angle described in above-described embodiment can be 100～140 degree.The situation that described predetermined angle is 120 degree has been shown in Fig. 1, and in fact, the setting of described predetermined angle can be set as the physical characteristics of luminescence component, light-receiving module etc. according to each device, and the present embodiment is not construed as limiting this.
Further, as shown in Figure 1, luminescence component described in above-described embodiment one can adopt following structure to realize.Described luminescence component 1 comprises: luminophor 11 and light emission lens 12.Wherein, described luminophor 11 sends Infrared.Described light emission lens 12 is arranged on the bright dipping side of described luminophor 11, for the light that described luminophor 11 is sent, is converted to directional light.Wherein, described directional light is described luminescence component 1 and sends detection light, and the optical axis of described light emission lens 12 is the optical axis of described luminescence component 1.Fig. 1 only shows a kind of specific implementation of described luminescence component, and in the specific implementation, described luminescence component also can adopt other structure to realize, for example, the structure being formed by luminophor and a plurality of lens, the present embodiment is not done concrete restriction to this.
Further, as shown in Figure 1, described light-receiving module 3 can adopt following structure to realize.Described light-receiving module 3 comprises: sensitive lens 32 and sensitive device 31.Wherein, described sensitive lens 32 is for converging as converging light being received from the scattered beam that described detection light scatters via described dust suspension.Described sensitive device 31 is arranged on the focal position place of described sensitive lens, described in receiving, converges light, and according to the described light signal that converges light, generates corresponding electric signal.Wherein, the optical axis of described sensitive lens 32 is the optical axis of described light-receiving module 3.
From said structure, shown in Fig. 1 and Fig. 2, the principle of work of the described dust investigating that the present embodiment provides is as follows:
Luminescent device 1, under the driving of control circuit 4, sends non-visible Infrared (detecting light).This non-visible Infrared becomes directional light, directive sense channel 2 through the light emission lens 12 on optical module 7.While having the dust of suspension in sense channel, this dust can form scattering to light.Part scattered beam (being the scattered beam that the optical axis of its optical axis and described luminescence component is described predetermined angle) directive sensitive lens 32 wherein.Scattered beam focuses on through sensitive lens 32, and light is converged on sensitive device 31, and sensitive device 31 is converted to electric signal by light signal and carries out follow-up signal processing and computing for control circuit.
Further, because the described electric signal that sensitive device generates according to light signal is fainter, can not meet the demand of follow-up computing, so control circuit needs it to process after receiving described electric signal, and then carry out follow-up calculating according to the signal after processing.As shown in Figure 3, the control circuit described in above-described embodiment one, can adopt following structure to realize.Concrete, described control circuit 4 comprises: driving circuit 5, amplifying circuit 41 and processor 42.Wherein, described driving circuit 5 is connected with luminescence component, for driving described luminescence component to send described detection light.Described amplifying circuit 41 is connected with light-receiving module, for the described electric signal that described light-receiving module is generated, amplifies.Concrete, as shown in Figure 3, described amplifying circuit 41 is connected with the sensitive device 31 of described light-receiving module.Described processor 42 is connected with described amplifying circuit 41 with described driving circuit respectively, for controlling described driving circuit, and detects the described electric signal after amplifying, and adopts default algorithm to calculate the dust concentration in described sense channel 2.During specific embodiment, described amplifier 41 can specifically adopt high precision operating amplifier, or also can adopt multistage amplifier circuit to realize.Described processor 42 can select microprocessor to realize.
Further, as shown in Figure 3, described control circuit 4 can also comprise: filtering circuit 43.Described filtering circuit 43 is arranged between described amplifying circuit 41 and described processor 42, for the described electric signal to after amplifying, carries out filtering processing.Accordingly, described processor is connected with described amplifying circuit 41 by described filtering circuit 43 by 42, and the described electric signal specifically for after processing according to filtering, adopts default algorithm to calculate the dust concentration in described sense channel.The present embodiment is by described filtering circuit is set, can effectively filtering external disturbance, guaranteed the authenticity of signal.Wherein, when specific embodiment, described filtering circuit 43 can be specially filter capacitor.
Further, as shown in Figure 3, described control circuit 4 can also comprise: adjust potentiometer 44.Described adjustment potentiometer 44 is arranged among described amplifying circuit, for described electric signal is carried out to amplifier gain compensation.The present embodiment has been realized the compensation of amplifier gain by described adjustment potentiometer 44 is set, eliminate the impact of components and parts inconsistency on testing result.
Here you need to add is that: the processor described in the described dust investigating that the present embodiment provides can adopt the mode of standard serial port communication to export result of calculation.The described processor that the present embodiment provides calculates dust concentration can utilize optical detection principle, according to the power of reflection ray, obtains the electric signal with dust concentration linear dependence.The linear relationship of described electric signal and described dust concentration can be pre-determined and be stored by staff, when described processor receives after the electric signal of described light-receiving module transmission, described processor, by the linear relationship of described electric signal and described dust concentration, obtains the described dust concentration that described electric signal is corresponding.Certainly, described processor, except adopting the mode of linear search to obtain described dust concentration, also can, according to the calculation procedure being pre-configured in described processor, calculate dust concentration.
Here it should be noted that: the detection light that the luminescence component described in above-described embodiment sends can be pulse light.Thus, further, the control circuit 4 described in the described dust investigating that above-described embodiment provides is also for sending the pulse signal of preset length by setpoint frequency.The described pulse signal that described driving circuit 5 also sends for receiving described control circuit 4, and drive described luminescence component 1 to send pulse light according to described pulse signal.When specific embodiment, described driving circuit 5 can be power tube.Described power tube is connected with the luminophor in described luminescence component 1.Described power tube is connected with the processor 42 in described control circuit 4.Wherein, described pulse light is as described detection light.
Fig. 4 shows the fundamental diagram of the described dust investigating that the present embodiment one provides.As can be seen from Figure 4, the processor 42 in described control circuit 4 is pressed the pulse signal that setpoint frequency sends preseting length, drives driving circuit 5, sends pulse light be irradiated to the dust suspension in sense channel by driving circuit 5 control luminescent devices 1.Sensitive device 3 is converted to electric signal by the light signal receiving, and after amplifying circuit 41 amplifies, turns back to processor 42.42 pairs of signals that collect of processor, process by software algorithm, in the mode of standard serial port, export dust concentration signal.In Fig. 4, also show storer, EEPROM.By described storer is set, described processor can refer to the dust density of calculating to exist in described storer, in order to subsequent calculations, uses.
Wherein, the output of the power supply of described control circuit input and rs 232 serial interface signal is integrated in the connector 6 of six pins, has simplified and being connected of governor circuit, easy to use.Whole control circuit 4 working currents are no more than 20mA, meet the user demand of low power consuming devices completely.
The setpoint frequency of described processor transmitted signal can be set according to the parameter characteristic of used components and parts.For example, described setpoint frequency can send a pulse signal for every 10ms.The length of described pulse signal can be 320ns.Described processor drives driving circuit to light the luminophor in luminescence component; And by setting sequential relationship, after the setting duration (as 280ns) after transmitted signal, detect received voltage signal, the useful signal collecting is asked for to the mean value in 1s, and outwards send data with the communication mode of standard serial port.
Further, as shown in Figure 2, Fig. 2 shows the structural representation of the described dust investigating of above-described embodiment.As shown in Figure 2, described dust investigating also comprises: pedestal 8 and screening cover 9.Here you need to add is that described screening cover 9 can be metallic shield lid.Adopt fully filtering external disturbance of metallic shield lid, guaranteed the authenticity of signal.Described pedestal 8 is provided with air hole (not shown).Described screening cover 9 is provided with air hole (not shown).Described luminescence component 1, described light-receiving module 3, described control circuit 4 are all arranged on that on described pedestal 8, (processor 42 shown in Fig. 2 in described control circuit 4 is arranged on described pedestal, and the connector 6 of six pins is arranged on described pedestal, remaining is and illustrates).Described screening cover 9 is arranged on described pedestal 8, described luminescence component 1, described light-receiving module 3, described control circuit 4 is contained in the accommodating cavity of described screening cover 9 and described pedestal 8 formations.The air hole of the air hole of described pedestal 8 and described screening cover 9 forms described sense channel 2.
Further, in order to guarantee the measuring accuracy of dust measurement device, keep the pollution that is not subject to dust, particularly optics of each parts, between pedestal described in above-described embodiment and described screening cover, be provided with sense channel wall.Air hole on air hole on described pedestal, described screening cover and described sense channel wall form described sense channel.Air hole on air hole on described pedestal, described screening cover is as the convection current blow vent of described sense channel.Described detection light and described scattered beam on described conduit wall, on the light path of corresponding described detection light and the light-receiving optical path of described light-receiving module, be equipped with transmittance section, so that can see through described transmittance section.
By the design of said structure, make, in accommodation space that each parts all form in described pedestal and screening cover, each parts and external dust are kept apart, and then guaranteed the measuring accuracy of dust investigating, and each electronic unit to be difficult for being subject to the interference of dust.
Here also you need to add is that: described in the described dust investigating that above-described embodiment provides, on processor, also dispose parametric compensation correcting function program, by this program can fully guarantee to dispatch from the factory consistance of product is set.
The schematic flow sheet of the dust detection method that as shown in Figure 5, the embodiment of the present invention two provides.The described dust investigating that above-described embodiment one provides can be realized the described method that the present embodiment two provides.Concrete, the method described in the present embodiment two, comprising:
Step 101, luminescence component send detection light, with the convection current blow vent irradiating via sense channel, enter the dust suspension in described sense channel.
Wherein, described detection light can be specially pulse light.
Here it should be noted that: before above-mentioned steps 101, also comprise the steps:
Described control circuit sends the pulse signal of preset length by setpoint frequency;
Driving circuit receives the described pulse signal that described control circuit sends, and drives described luminescence component to send pulse light according to described pulse signal;
Wherein, described pulse light is as described detection light.Described setpoint frequency is that every 10ms sends a pulse signal, and described preset length is 320ns.
Step 102, light-receiving module receive described detection light, and via described dust suspension, that scatter and optical axis described luminescence component are the scattered beam of predetermined angle.
Wherein, the optical axis of described light-receiving module and the optical axis of described luminescence component are described predetermined angle.
Step 103, described light-receiving module generate corresponding electric signal according to the light signal of described scattered beam.
Step 104, control circuit receive the described electric signal that described light-receiving module sends.
Step 105, described control circuit, according to described electric signal, calculate the dust concentration in described sense channel.
When specific embodiment, this step can adopt following steps to realize:
First, described control circuit is according to described electric signal, calculate when the current dust concentration that advance into the dust suspension in described sense channel.
Then, described control circuit is set all passing dust concentration calculating in the period before obtaining and receiving described electric signal.
Finally, to current dust concentration and all described passing dust concentration that gets, average.
Wherein, described mean value is as the described dust concentration entering in described sense channel.The described setting period can be 0.5s, 1s etc.
The above-mentioned mode of averaging of the present embodiment employing enters the dust concentration in described sense channel described in calculating, and can effectively improve the accuracy of detection of dust investigating.
Here you need to add is that: when the control circuit described in the present embodiment drives described luminescence component to send pulse light, also need according to the sequential relationship of setting, after setting duration (as 280ns) after transmitted signal, detect received voltage signal, the useful signal collecting is asked for to the mean value in 1s, and outwards send data with the communication mode of standard serial port.
The technical scheme that the present embodiment provides consists of luminescence component and light-receiving module setting, and the optical axis of light-receiving module and the optical axis of described luminescence component are the light channel structure of predetermined angle, realized based on optical detection principle, according to the power of described scattered beam, calculate the dust concentration in described sense channel.Hence one can see that, and the technical scheme that the present embodiment provides is light principle due to what adopt, and compared with the device of existing structure, its volume is little, and cost is low, be easy to carry, and low in energy consumption; In addition, the principle of technical scheme provided by the invention based on optical scattering, its accuracy of detection is high.
Further, step 105 described in above-described embodiment, described control circuit, according to described electric signal, calculate the dust concentration in described sense channel, can adopt following steps to realize:
Step 1051, described electric signal is amplified.
Step 1052, according to the described electric signal after amplifying, adopt default algorithm to calculate the dust concentration in described sense channel.
Further, the step 105 described in above-described embodiment, described control circuit, according to described electric signal, calculate the dust concentration in described sense channel, can also comprise the steps:
Step 1053, the described electric signal after amplifying is carried out to filtering processing.
Accordingly, described step 1052, describedly according to the described electric signal after amplifying, adopt default algorithm to calculate the dust concentration in described sense channel, be specially:
Described electric signal after processing according to filtering, adopts default algorithm to calculate the dust concentration in described sense channel.
Further, the step 105 described in above-described embodiment, described control circuit, according to described electric signal, calculate the dust concentration in described sense channel, can also comprise the steps:
Step 1054, described electric signal is carried out to amplifier gain compensation.
It should be noted that: for aforesaid each embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in instructions all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part of detailed description, can be referring to the associated description of other embodiment.
Be understandable that the correlated characteristic reference mutually in said method and device.In addition, " first " in above-described embodiment, " second " etc. are for distinguishing each embodiment, and do not represent the quality of each embodiment.
Those skilled in the art can be well understood to, for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the instructions that provided herein, a large amount of details have been described.Yet, can understand, embodiments of the invention can not put into practice in the situation that there is no these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Similarly, be to be understood that, in order to simplify the disclosure and to help to understand one or more in each inventive aspect, in the above in the description of exemplary embodiment of the present invention, each feature of the present invention is grouped together into single embodiment, figure or sometimes in its description.Yet, the method for the disclosure should be construed to the following intention of reflection: the present invention for required protection requires than the more feature of feature of clearly recording in each claim.Or rather, as reflected in claims below, inventive aspect is to be less than all features of disclosed single embodiment above.Therefore, claims of following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present invention.
In addition, those skilled in the art can understand, although embodiment more described herein comprise some feature rather than further feature included in other embodiment, the combination of the feature of different embodiment means within scope of the present invention and forms different embodiment.For example, in the following claims, the one of any of embodiment required for protection can be used with array mode arbitrarily.
It should be noted above-described embodiment the present invention will be described rather than limit the invention, and those skilled in the art can design alternative embodiment in the situation that do not depart from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has a plurality of such elements.The present invention can be by means of including the hardware of some different elements and realizing by means of the computing machine of suitably programming.In having enumerated the unit claim of some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.
Claims (17)
1. a dust investigating, is characterized in that, comprising:
Luminescence component, described luminescence component sends detection light;
Sense channel, described sense channel is arranged in the light path of described detection light, so that the convection current blow vent that described detection light irradiates via described sense channel enters the dust suspension in described sense channel;
Light-receiving module, the optical axis of described light-receiving module and the optical axis of described luminescence component are predetermined angle, to receive, described detection light is that scatter via described dust suspension is the scattered beam of described predetermined angle with optical axis described luminescence component, and generates corresponding electric signal according to the light signal of described scattered beam;
Control circuit, described control circuit is connected with described light-receiving module with described luminescence component respectively, be used for driving described luminescence component, and receive the described electric signal that described light-receiving module sends, and calculate the dust concentration in described sense channel according to described electric signal.
2. dust investigating according to claim 1, is characterized in that, described predetermined angle is 100～140 degree.
3. dust investigating according to claim 1 and 2, is characterized in that, described luminescence component comprises:
Luminophor, it sends Infrared;
Light emission lens, the bright dipping side that it is arranged on described luminophor, is converted to directional light for the light that described luminophor is sent;
Wherein, described directional light is described luminescence component and sends detection light, and the optical axis of described light emission lens is the optical axis of described luminescence component.
4. dust investigating according to claim 1 and 2, is characterized in that, described light-receiving module comprises:
Sensitive lens, for converging as converging light being received from the scattered beam that described detection light scatters via described dust suspension;
Sensitive device, the focal position place that it is arranged on described sensitive lens converges light described in receiving, and according to the described light signal that converges light, generates corresponding electric signal;
Wherein, the optical axis of described sensitive lens is the optical axis of described light-receiving module.
5. dust investigating according to claim 1 and 2, is characterized in that, described control circuit, comprising:
Driving circuit, described driving circuit is connected with luminescence component, for driving described luminescence component to send described detection light;
Amplifying circuit, described amplifying circuit is connected with light-receiving module, for the described electric signal that described light-receiving module is generated, amplifies;
Processor, described processor is connected with described amplifying circuit with described driving circuit respectively, for controlling described driving circuit, and detects the described electric signal after amplifying, and adopts default algorithm to calculate the dust concentration in described sense channel.
6. dust investigating according to claim 5, is characterized in that, described control circuit, also comprises:
Filtering circuit, described filtering circuit is arranged between described amplifying circuit and described processor, for the described electric signal to after amplifying, carries out filtering processing;
Accordingly, described processor is connected with described amplifying circuit by described filtering circuit, and the described electric signal specifically for after processing according to filtering, adopts default algorithm to calculate the dust concentration in described sense channel.
7. dust investigating according to claim 6, is characterized in that, described control circuit, also comprises:
Adjust potentiometer, described adjustment potentiometer is arranged among described amplifying circuit, for described electric signal is carried out to amplifier gain compensation.
8. dust investigating according to claim 5, is characterized in that,
Described processor, also for sending the pulse signal of preset length by setpoint frequency;
Described driving circuit, the described pulse signal also sending for receiving described control circuit, and drive described luminescence component to send pulse light according to described pulse signal;
Wherein, described pulse light is as described detection light.
9. dust investigating according to claim 1 and 2, is characterized in that, also comprises:
Pedestal, which is provided with air hole;
Screening cover, described screening cover is provided with air hole;
Wherein, described luminescence component, described light-receiving module, described control circuit are all arranged on described pedestal;
Described screening cover is arranged on described pedestal, described luminescence component, described light-receiving module, described control circuit is contained in the accommodating cavity of described screening cover and described pedestal formation;
The air hole of described pedestal and the air hole of described screening cover form described sense channel.
10. dust investigating according to claim 9, is characterized in that,
Between described pedestal and described screening cover, be provided with sense channel wall;
Air hole on air hole on described pedestal, described screening cover and described sense channel wall form described sense channel;
Air hole on air hole on described pedestal, described screening cover is as the convection current blow vent of described sense channel;
Described detection light and described scattered beam on described conduit wall, on the light path of corresponding described detection light and the light-receiving optical path of described light-receiving module, be equipped with transmittance section, so that can see through described transmittance section.
11. 1 kinds of dust detection methods, is characterized in that, comprising:
Luminescence component sends detection light, with the convection current blow vent irradiating via sense channel, enters the dust suspension in described sense channel;
Light-receiving module receives described detection light, and via described dust suspension, that scatter and optical axis described luminescence component are the scattered beam of predetermined angle, and wherein, the optical axis of described light-receiving module and the optical axis of described luminescence component are described predetermined angle;
Described light-receiving module generates corresponding electric signal according to the light signal of described scattered beam;
Control circuit receives the described electric signal that described light-receiving module sends;
Described control circuit, according to described electric signal, calculates the dust concentration in described sense channel.
12. methods according to claim 11, is characterized in that, described control circuit, according to described electric signal, calculates the dust concentration in described sense channel, comprising:
Described electric signal is amplified;
Described electric signal according to after amplifying, adopts default algorithm to calculate the dust concentration in described sense channel.
13. methods according to claim 12, is characterized in that, described control circuit, according to described electric signal, calculates the dust concentration in described sense channel, also comprises:
Described electric signal after amplifying is carried out to filtering processing;
Accordingly, describedly according to the described electric signal after amplifying, adopt default algorithm to calculate the dust concentration in described sense channel, be specially:
Described electric signal after processing according to filtering, adopts default algorithm to calculate the dust concentration in described sense channel.
14. according to the method described in claim 12 or 13, it is characterized in that, described control circuit, according to described electric signal, calculates the dust concentration in described sense channel, also comprises:
Described electric signal is carried out to amplifier gain compensation.
15. according to the method described in any one in claim 11～14, it is characterized in that, also comprises:
Described control circuit sends the pulse signal of preset length by setpoint frequency;
Driving circuit receives the described pulse signal that described control circuit sends, and drives described luminescence component to send pulse light according to described pulse signal;
Wherein, described pulse light is as described detection light.
16. methods according to claim 15, is characterized in that, described setpoint frequency is that every 10ms sends a pulse signal, and described preset length is 320ns.
17. methods according to claim 15, is characterized in that, described control circuit, according to described electric signal, calculates the dust concentration in described sense channel, is specially:
Described control circuit, according to described electric signal, calculates when the current dust concentration that advances into the dust suspension in described sense channel;
Described control circuit is set all passing dust concentration calculating in the period before obtaining and receiving described electric signal;
To current dust concentration and all described passing dust concentration getting, average;
Wherein, described mean value is as the dust concentration in described sense channel.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136633A (en) * | 2015-08-12 | 2015-12-09 | 朱凌云 | Pulsed infrared dust concentration detection circuit |
| CN105486617A (en) * | 2015-11-27 | 2016-04-13 | 易轩 | Fine particle fast detector |
| CN105628573A (en) * | 2016-03-30 | 2016-06-01 | 广东美的厨房电器制造有限公司 | Lens assembly, device for detecting attachment magnitude and household appliance |
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| US10225442B2 (en) | 2015-02-16 | 2019-03-05 | Mediatek Inc. | Electronic device and method for sensing air quality |
| CN114682018A (en) * | 2022-04-13 | 2022-07-01 | 中国石油大学(北京) | Intelligent monitoring control system and method for coalescer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6055052A (en) * | 1998-01-26 | 2000-04-25 | Mie Corporation | System for, and method of, monitoring airborne particulate, including particulate of the PM2.5 class |
| CN201138324Y (en) * | 2007-12-20 | 2008-10-22 | 西安劳特信息技术有限责任公司 | Photoelectric coal dust concentration sensor in rare diffusing type |
| CN101354332A (en) * | 2008-09-26 | 2009-01-28 | 北京绿林创新数码科技有限公司 | Laser powder dust detector with humidity continuous self-correcting function and detecting method thereof |
| CN102854109A (en) * | 2012-07-31 | 2013-01-02 | 安徽皖仪科技股份有限公司 | Novel intelligent sensor for measuring dust concentration by using laser backscattering method |
| CN103673202A (en) * | 2012-09-10 | 2014-03-26 | 珠海格力电器股份有限公司 | Air conditioning system and PM2.5 detection and purification method thereof |
-
2014
- 2014-09-17 CN CN201410476778.XA patent/CN104198349B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6055052A (en) * | 1998-01-26 | 2000-04-25 | Mie Corporation | System for, and method of, monitoring airborne particulate, including particulate of the PM2.5 class |
| CN201138324Y (en) * | 2007-12-20 | 2008-10-22 | 西安劳特信息技术有限责任公司 | Photoelectric coal dust concentration sensor in rare diffusing type |
| CN101354332A (en) * | 2008-09-26 | 2009-01-28 | 北京绿林创新数码科技有限公司 | Laser powder dust detector with humidity continuous self-correcting function and detecting method thereof |
| CN102854109A (en) * | 2012-07-31 | 2013-01-02 | 安徽皖仪科技股份有限公司 | Novel intelligent sensor for measuring dust concentration by using laser backscattering method |
| CN103673202A (en) * | 2012-09-10 | 2014-03-26 | 珠海格力电器股份有限公司 | Air conditioning system and PM2.5 detection and purification method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10225442B2 (en) | 2015-02-16 | 2019-03-05 | Mediatek Inc. | Electronic device and method for sensing air quality |
| CN106290089A (en) * | 2015-05-12 | 2017-01-04 | 杜晨光 | A kind of high-precision miniaturization particulate matter sensors |
| CN105136633A (en) * | 2015-08-12 | 2015-12-09 | 朱凌云 | Pulsed infrared dust concentration detection circuit |
| CN105486617A (en) * | 2015-11-27 | 2016-04-13 | 易轩 | Fine particle fast detector |
| CN105628573A (en) * | 2016-03-30 | 2016-06-01 | 广东美的厨房电器制造有限公司 | Lens assembly, device for detecting attachment magnitude and household appliance |
| CN105628573B (en) * | 2016-03-30 | 2018-05-22 | 广东美的厨房电器制造有限公司 | Lens subassembly, for detecting the device of attachment magnitude and household electrical appliance |
| CN106018221A (en) * | 2016-05-19 | 2016-10-12 | 上海勤煊信息科技有限公司 | Movable portable dust detector for warehouse storage |
| CN106706659A (en) * | 2016-12-22 | 2017-05-24 | 武汉理工光科股份有限公司 | Digital detection system and method for flame detector |
| CN106706659B (en) * | 2016-12-22 | 2019-09-10 | 武汉理工光科股份有限公司 | Flame detector digitized detection system and method |
| CN106963001A (en) * | 2017-05-09 | 2017-07-21 | 南京正泽科技股份有限公司 | A kind of Multifunctional gauze mask |
| CN107966392A (en) * | 2017-11-28 | 2018-04-27 | 苏州佑克骨传导科技有限公司 | A kind of PM2.5 detects broadcast device |
| CN109217819A (en) * | 2018-09-13 | 2019-01-15 | 友达光电股份有限公司 | Dust investigating, comprising its solar cell system, use its appraisal procedure |
| CN114682018A (en) * | 2022-04-13 | 2022-07-01 | 中国石油大学(北京) | Intelligent monitoring control system and method for coalescer |
| CN114682018B (en) * | 2022-04-13 | 2023-01-31 | 中国石油大学(北京) | Intelligent monitoring control system and method for coalescer |
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