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WO2017035690A1 - Capteur de concentration de matière particulaire et terminal mobile - Google Patents

Capteur de concentration de matière particulaire et terminal mobile Download PDF

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Publication number
WO2017035690A1
WO2017035690A1 PCT/CN2015/088359 CN2015088359W WO2017035690A1 WO 2017035690 A1 WO2017035690 A1 WO 2017035690A1 CN 2015088359 W CN2015088359 W CN 2015088359W WO 2017035690 A1 WO2017035690 A1 WO 2017035690A1
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WO
WIPO (PCT)
Prior art keywords
light
particulate matter
unit
electrical signal
concentration sensor
Prior art date
Application number
PCT/CN2015/088359
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English (en)
Chinese (zh)
Inventor
侯婷婷
Original Assignee
侯婷婷
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 侯婷婷 filed Critical 侯婷婷
Priority to PCT/CN2015/088359 priority Critical patent/WO2017035690A1/fr
Publication of WO2017035690A1 publication Critical patent/WO2017035690A1/fr

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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
    • G01N15/02—Investigating particle size or size distribution
    • 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

Definitions

  • the invention relates to the technical field of environmental safety detection, in particular to a particle concentration sensor and a mobile terminal.
  • particulate matter pollution in the atmosphere is one of the most common environmental pollution. Excessive particulate matter can cause various lung diseases after entering the lungs, such as silicosis, asbestosis, pneumoconiosis, etc., if the particles contain toxic properties. The metal will also damage the human brain, nerves, kidneys, etc., and it will directly cause death.
  • the prior art methods for detecting the concentration of particulate matter include weighing method, oscillating balance method, light scattering method, etc., and light scattering method is the most common method for measuring the concentration of particulate matter, specifically: inhaling air containing particulate matter into the darkroom to the darkroom When the particles in the light illuminate the light, scattering occurs. Under the condition that the physical properties of the particles are certain, the scattered light intensity of the particles is linear to the mass concentration of the particles, and the scattered light intensity of the particles is converted into a pulse count or the intensity of the scattered light is converted.
  • the electrical mass signal can measure the relative mass concentration of the particulate matter, and then through the preset conversion coefficient, the mass concentration of the particulate matter can be directly obtained.
  • sensors that use light scattering to detect the concentration of particulate matter generally need to include a darkroom, a light unit, a photoelectric converter, a processing unit, a draft unit, and an optical trap unit.
  • the dark room is provided with an air inlet and an air outlet, and the air blowing unit is connected to the air outlet. After the air blowing unit is started, the air in the dark room is extracted, and the air inlet of the dark room draws in air from the atmosphere.
  • the light emitting unit, the photoelectric converter, the processing unit and the light trap unit are all disposed in the dark room, the light emitting unit emits light, illuminates the dark indoor air, and generates scattered light, the photoelectric converter receives the scattered light, and converts the scattered light into an electrical signal, and processes The unit calculates the particle concentration based on the electrical signal.
  • Light The trap unit emits light that is emitted by the light emitting unit and that does not generate scattering.
  • a sensor for detecting the concentration of particulate matter by a light scattering method generally needs to include a dark room, a draft unit, a light trap unit, and the like, and the dark room and the exhaust unit, the light trap unit usually need to occupy a certain volume, so that the volume of the sensor is excessive. Large, inconvenient to carry, unfavorable promotion and application.
  • the present invention proposes a particle concentration sensor capable of greatly reducing the volume occupied by the particle concentration sensor.
  • a technical solution adopted by the present invention is to provide a particle concentration sensor, comprising a light emitting unit and a light processing unit;
  • the light processing unit includes a photoelectric converter and a filter layer, the filter layer is disposed on the photoelectric converter; the light emitting unit emits light of a predetermined wavelength into a particle-containing environment, wherein the predetermined wavelength of light meets Scattering occurs to the particulate matter to generate scattered light; the light processing unit is disposed within a range covered by the scattered light, wherein the filter layer transparently transmits the scattered light to the photoelectric converter, and filters the Light other than scattered light; the photoelectric converter is configured to convert the scattered light into an electrical signal and transmit the electrical signal to the computing unit.
  • the particulate matter concentration sensor further comprises a calculating unit, configured to calculate a concentration of the particulate matter in the particulate matter-containing environment according to the electrical signal.
  • the wavelength of the scattered light is the predetermined wavelength; and the filtering layer is configured to filter light of other wavelengths other than the predetermined wavelength.
  • the angle between the optical axis center line of the light emitted by the light emitting unit and the optical axis center line of the light received by the light processing unit is not equal to 180 degrees.
  • the particulate matter concentration sensor further includes a baffle; the baffle plate is disposed between the light emitting unit and the light processing unit, wherein the baffle plate is used to block the light emitted by the light emitting unit directly Transfer to the light processing unit.
  • the particle concentration sensor further comprises a housing; the light emitting unit, the light processing unit, The computing unit and the baffle are disposed in the outer casing; the outer casing is provided with a symmetric first through hole and a second through hole; the light emitted by the light emitting unit enters the particulate matter environment through the first through hole; The scattered light enters the light processing unit through the second through hole.
  • the computing unit includes a receiving module, an obtaining module, and a computing module;
  • the particulate matter concentration sensor further includes a storage module, a control module, and an input and output module;
  • the receiving module is configured to receive an electrical signal sent by the photoelectric converter;
  • the obtaining module is configured to obtain, from the storage unit, a conversion coefficient between the preset electrical signal and the particle concentration, and the initial electrical signal, wherein the initial electrical signal is when the light emitting unit does not emit light of a predetermined wavelength,
  • the filter layer receives light having the same wavelength as the predetermined wavelength in a particulate-containing environment, and transmits the light to the photoelectric converter, the photoelectric converter converts the obtained electrical signal according to the light, and the electric
  • the signal is stored in the storage unit;
  • the calculation module is configured to calculate the concentration of the particulate matter in the particulate matter environment according to the received electrical signal, the initial electrical signal, and the conversion coefficient;
  • the control module is configured to control the illumination of the illumination unit;
  • the particle concentration sensor further includes a collecting lens; the collecting lens is disposed on the light emitting unit.
  • another technical solution adopted by the present invention is to provide a mobile terminal including the above-mentioned particulate matter concentration sensor.
  • a mobile terminal including a particulate matter concentration sensor and a computing unit;
  • the particulate matter concentration sensor includes a light emitting unit and a light processing unit; and the light emitting unit is in a particulate matter environment Transmitting light of a predetermined wavelength, wherein the predetermined wavelength of light encounters particles, scattering occurs to generate scattered light;
  • the light processing unit includes a photoelectric converter and a filter layer, and the filter layer is disposed on the photoelectric converter The light processing unit is disposed within a range covered by the scattered light, wherein the filter layer transparently transmits the scattered light to the photoelectric converter, and filters light other than the scattered light;
  • a photoelectric converter is configured to convert the scattered light into an electrical signal and transmit the electrical signal to the computing unit;
  • the computing unit is configured to calculate a concentration of particulate matter in the particulate-containing environment based on the electrical signal.
  • the wavelength of the scattered light is the predetermined wavelength; the filtering layer is configured to filter light of other wavelengths other than the predetermined wavelength; the optical axis center line of the light emitted by the light emitting unit and the light processing The angle between the centerlines of the optical axes of the light received by the unit is not equal to 180 degrees.
  • the particulate matter concentration sensor further includes a baffle; the baffle plate is disposed between the light emitting unit and the light processing unit, wherein the baffle plate is used to block the light emitted by the light emitting unit directly The transmission reaches the optical processing unit and the filter layer.
  • the particle concentration sensor further comprises a casing; the lighting unit, the light processing unit, the calculating unit and the baffle are disposed in the casing; the casing is provided with a symmetric first through hole and a second through hole The light emitted by the light emitting unit enters the particle-containing environment through the first through hole; the scattered light enters the light processing unit through the second through hole.
  • the computing unit includes a receiving module, an obtaining module, and a computing module; the mobile terminal further includes a storage unit; the receiving module is configured to receive an electrical signal sent by the photoelectric converter; and the acquiring module is configured to use the storage unit Obtaining a conversion coefficient between the preset electrical signal and the particle concentration, and the initial electrical signal, wherein the initial electrical signal is in a environment containing the particulate matter when the light emitting unit does not emit light of a predetermined wavelength Light having the same wavelength as the predetermined wavelength and transmitting the light to the photoelectric converter, the photoelectric converter converting an electric signal obtained according to the light, and storing the electrical signal in a storage unit;
  • the calculation module is configured to calculate a particulate matter concentration of the environment based on the received electrical signal, the initial electrical signal, and the conversion coefficient.
  • the mobile terminal further includes a determining unit, an alarm unit, and a display unit; the determining unit determines whether the calculated dust concentration is greater than a predetermined alarm concentration; and if the predetermined alarm concentration is greater than the predetermined alarm concentration, the alarm unit generates an alarm a signal; the display unit is configured to display the concentration of the particulate matter.
  • the light processing unit can receive the light of the predetermined wavelength and encounter the particulate matter in the environment containing the particulate matter.
  • the light processing unit includes a photoelectric converter and a filter layer, the filter layer is disposed on the photoelectric converter, and the filter layer filters the light other than the scattered light, so that the photoelectric converter receives only the scattered light and receives the scattering according to the Light generates an electrical signal, which in turn can Calculating the concentration of the particulate matter based on the electrical signal, it can be seen that the particulate matter concentration sensor of the present invention does not require a power device, a matting chamber, or a dark chamber, and greatly reduces the volume of the particulate matter concentration sensor, making the particulate matter concentration sensor more portable and also saving particulate matter concentration. The cost of the sensor is conducive to the popularization and application of the particle concentration sensor.
  • FIG. 1 is a schematic structural view of a first embodiment of a particulate matter concentration sensor of the present invention
  • FIG. 2 is a schematic view showing an angle between an optical axis center line of light received by the light processing unit and a center line of an optical axis of light emitted from the light emitting unit in the first embodiment of the particle concentration sensor of the present invention, which is not equal to 180 degrees.
  • Figure 3 is a schematic view showing the structure of a second embodiment of the particle concentration sensor of the present invention.
  • FIG. 4 is a schematic structural view of a third embodiment of the particulate matter concentration sensor of the present invention.
  • FIG. 5 is a schematic structural diagram of a first embodiment of a mobile terminal according to the present invention.
  • FIG. 6 is a schematic structural diagram of a second embodiment of a mobile terminal according to the present invention.
  • the particulate matter concentration sensor includes a light emitting unit 11 and a light processing unit 12.
  • the optical processing unit 12 includes a filter layer 121 and a photoelectric converter 122.
  • the filter layer 121 is disposed on the photoelectric converter 122, and the filter layer 121 filters and filters the light.
  • the light emitting unit 11 emits light of a predetermined wavelength into a particulate-containing environment, wherein light of a predetermined wavelength encounters the particles, scattering occurs, and scattered light is generated.
  • the particles are irradiated with light, scattering occurs, and the intensity of the scattered light is linear to the concentration of the particles. Therefore, the concentration of the particles can be calculated from the intensity of the scattered light.
  • the particle-containing environment contains two meaning environments, one environment containing particles, such as: atmospheric environment, underground mining environment, etc.; another environment without any particulate matter, if there is no particulate matter in the environment Then, the particle concentration value detected by the particle concentration sensor is zero.
  • the light processing unit 12 is disposed within a range covered by the scattered light, wherein the filter layer 121 transparently transmits the scattered light to the photoelectric converter 122 and filters the light other than the scattered light.
  • the filter layer 121 covers the light receiving port (not shown) of the photoelectric converter 122, so that all the light entering the photoelectric converter 122 needs to be filtered by the filter layer 121.
  • the layer 121 allows only light having a wavelength of a predetermined wavelength to pass through the filter layer 121, and filters light of other wavelengths other than the predetermined wavelength, so that light of other wavelengths other than the predetermined wavelength cannot enter the photoelectric converter 122 through the filter layer 121, thereby making the photoelectric
  • the converter 122 can only receive light of a predetermined wavelength.
  • Filtering layer 121 filters out other light in the particle-containing environment, allowing only light of a predetermined wavelength to pass, preventing the photoelectric converter 122 from receiving light of other wavelengths, affecting subsequent calculation results.
  • the positions of the light emitting unit 11 and the light processing unit 12 may be set such that the angle between the optical axis center line of the light emitted by the light emitting unit 11 and the optical axis center line of the light received by the light processing unit 12 is not equal to 180 degrees, as shown in FIG. 2, the angle between the optical axis center line of the light emitted by the light emitting unit 11 and the optical axis center line of the light received by the light processing unit 12 is ⁇ ⁇ 180 degrees, wherein the optical axis center The angle between the lines is ⁇ 180 degrees to prevent the light processing unit 12 from receiving the scattered light.
  • the particulate sensor also includes a computing unit 13.
  • the photoelectric converter 12 converts the scattered light into an electrical signal and transmits an electrical signal to the computing unit 13.
  • the calculation unit 13 is configured to calculate the concentration of the particulate matter in the environment containing the particulate matter based on the electrical signal. Since the intensity of the scattered light is linear with the concentration of the particles, the scattered light can be converted into an electrical signal, and the concentration of the particles is calculated based on the electrical signal.
  • the light-receiving device 12 of the present invention receives only part of the scattered light, when calculating the concentration of the particulate matter based on the scattered light, the conversion coefficient between the electrical signal and the concentration of the particulate matter can be preset and adjusted by the conversion coefficient.
  • the particulate-containing environment it is also possible to include light of a predetermined wavelength. If the particle-containing environment contains light having a wavelength of a predetermined wavelength, and light having a wavelength of a predetermined wavelength in the particulate-containing environment enters the light processing unit 12, the particulate matter is detected. When the concentration of the particles in the environment is different, the filter layer 121 cannot filter the light having a wavelength of a predetermined wavelength in the environment containing the particles, and the light having a wavelength of a predetermined wavelength in the environment containing the particles affects the calculation result. Therefore, it is necessary to calculate the concentration of the particles.
  • the calculation unit 13 includes a receiving module 131, an obtaining module 132, and a calculating module 133.
  • the particulate sensor further includes a storage unit 14
  • the receiving module 131 receives the electrical signal transmitted by the photoelectric converter.
  • the obtaining module 132 acquires a conversion coefficient between the preset electrical signal and the particle concentration and the initial electrical signal from the storage unit 14, wherein the initial electrical signal is that the filter layer 121 receives the particulate matter when the light emitting unit 11 does not emit light of a predetermined wavelength.
  • the light having the same wavelength as the predetermined wavelength of the environment transmits light to the photoelectric converter 122, and the photoelectric converter 122 converts the obtained electric signal according to the light.
  • the light emitting unit 11 may not be turned on first, and the light processing unit 12 first receives the light having the same wavelength as the predetermined wavelength in the environment containing the particulate matter, and generates an initial electrical signal. And storing the initial electrical signal in the storage unit 14.
  • the light-emitting unit 11 is turned on again, and the light processing unit 12 receives the light containing the particle reflection and the same wavelength in the environment as the predetermined wavelength, and generates a received electrical signal stored in the storage unit 14.
  • the calculation module 133 is configured to calculate the particulate matter concentration of the environment according to the received electrical signal, the initial electrical signal, and the conversion coefficient.
  • the conversion factor can be preset based on historical statistics.
  • the sensor also includes a baffle 15, a housing 16, an input and output unit 17, and a control unit 18.
  • the baffle 15 is disposed between the light emitting unit 11 and the light processing unit 12, wherein the baffle 15 is used to block the light of the predetermined wavelength emitted by the light emitting unit 11 from being directly transmitted to the light processing unit 12, in short, in the light emitting
  • a baffle 15 is disposed between the unit 11 and the light processing unit 12, and the baffle 15 blocks the light emitted by the light emitting unit 11 and directly diffused toward the light processing unit 12, and the baffle 15 restricts the light emitting unit 11 from directly to the light processing unit. 12 emits light.
  • the filter layer 121 filters only light of a wavelength other than the predetermined wavelength, the wavelength of the light emitted by the scattered light and the light-emitting unit 11 is a predetermined wavelength. If the light emitted by the light-emitting unit 11 reaches the filter layer 121 directly, the filter layer 121 This light cannot be filtered out, which in turn affects subsequent calculations. Of course, in other alternative embodiments, the baffle 15 may not be provided.
  • the light emitted by the light emitting unit 11 cannot be directly transmitted to the light processing unit 12, for example:
  • the light emitting unit 11 and the light processing unit 12 are disposed at the same horizontal plane.
  • the particulate matter concentration sensor further includes a collecting lens 23, and the collecting lens 23 is disposed on the light emitting unit. 21, the collecting lens 23 controls the propagation direction of the light emitted by the light emitting unit 21, wherein the collecting lens 23 can collect the light emitted by the light emitting unit 21, or control the light emitted by the light emitting unit 21 to spread the balance thereof.
  • a condensing lens (not shown) may be disposed on the filter layer 221 according to actual conditions, which is not specifically limited herein.
  • the light emitting unit 11, the light processing unit 12, the calculating unit 13, the storage unit 14, the baffle 15, the input and output unit 17, and the control unit 18 are all disposed in the outer casing 16 to protect the light emitting unit 11 and the light processing unit 12 through the outer casing 16.
  • the outer casing 16 is provided with a symmetrical first through hole 161 and a second through hole 162.
  • the first through hole 161 corresponds to the light emitting unit 11
  • the light emitted by the light emitting unit 11 enters the particle containing environment through the first through hole 161
  • the second through hole 162 corresponds to the light processing unit 12
  • the scattered light enters through the second through hole 162 .
  • a symmetrical first groove 361 and second groove 362 may also be disposed on the outer casing 36.
  • the light emitting unit 31 is disposed in the first recess 361
  • the light processing unit 32 is disposed in the second recess 362.
  • the first groove 361 can also serve to define the propagation direction of the light emitted by the light emitting unit 31. Therefore, in the embodiment of the present invention, the baffle can also be directly the outer casing 36.
  • the photoelectric converter 322 is disposed at the bottom of the second recess 362, the filter layer 321 is disposed at an upper portion of the second recess 362, and the filter layer 321 fills the upper space of the second recess 362, so that the filter layer 321 The upper surface is flush with the upper surface of the outer casing 36.
  • the light-emitting unit 31 is disposed at the bottom of the first recess 361.
  • a light-passing layer 311 may also be disposed.
  • the light-passing layer 311 allows light of a predetermined wavelength to pass through, and the light-passing layer 311 fills the first layer.
  • An upper space of a groove 361, and an upper surface of the light-passing layer 311 is flush with an upper surface of the outer casing 36.
  • the control unit 18 is connected to the light emitting unit 11 and the calculating unit 143 for controlling the turning on or off of the light emitting unit 11 and the calculating unit 143, thereby controlling the lighting unit 11 to emit light or the calculating unit to perform processing.
  • the input/output unit 17 is configured to receive the input conversion coefficient and convert the conversion coefficient Stored in the storage unit 14, or the particle concentration output calculated by the calculation module 133, other devices (not shown) may be connected to the input input and output unit 17, and the concentration of the particulate matter outputted by the input and output unit 17 is received, and according to the concentration of the particulate matter. Subsequent processing, for example: display of particulate matter concentration, alarm based on particle concentration, and the like.
  • the light processing unit when the positions of the light emitting unit and the light processing unit are set such that the light emitting unit directly emits light of a predetermined wavelength into the particulate-containing environment, the light processing unit can receive the light of the predetermined wavelength and encounter the particulate matter in the environment containing the particulate matter.
  • the generated scattered light in addition, the light processing unit includes a photoelectric converter and a filter layer, the filter layer is disposed on the photoelectric converter, and the filter layer filters the light other than the scattered light, so that the photoelectric converter receives only the scattered light and receives the scattering according to the The light generates an electrical signal, and the particle concentration can be calculated according to the electrical signal.
  • the particle concentration sensor of the present invention does not need a power device, a matting chamber, or a dark room, and greatly reduces the volume of the particle concentration sensor, so that the particle concentration sensor It is more portable and saves the cost of the particle concentration sensor, which is beneficial to the popularization and application of the particle concentration sensor.
  • FIG. 5 is a schematic structural diagram of a first embodiment of a mobile terminal according to the present invention.
  • the mobile terminal 40 includes a particulate matter concentration sensor 401.
  • the particle concentration sensor 401 please refer to the above embodiment of the particle concentration sensor, which will not be repeated here.
  • the mobile terminal further includes a receiving processing module (not shown), the receiving processing module is connected to an input and output unit (not shown) in the particulate matter concentration sensor 401, and the receiving processing module receives the concentration of the particulate matter output by the input and output unit, and is performed according to the concentration of the particulate matter.
  • the treatment for example, shows the concentration of the particulate matter, alarms according to the concentration of the particulate matter, and the like.
  • FIG. 6 is a schematic structural diagram of a second embodiment of a mobile terminal according to the present invention.
  • the second embodiment of the mobile terminal is different from the first embodiment of the mobile terminal in that the calculation unit 502, the input and output unit 503, and the storage unit 504 are not disposed in the particulate matter concentration sensor 501, but are disposed in the mobile terminal 50, and the concentration of the particulate matter is
  • the sensor 501 includes only a light emitting unit (not shown) and a light processing unit (not shown), and the calculating unit 502 and the light processing unit in the particulate matter concentration sensor 501 (Fig.
  • the input and output unit 503 and the storage unit 504 please refer to the particle concentration sensor embodiment, which will not be further described herein.
  • other structures of the particle concentration sensor 501 Please also refer to the particle concentration sensor implementation, which will not be repeated here.
  • the mobile terminal 50 further includes a display unit 505, a determining unit 506, and an alarm unit 507.
  • the display unit 505 displays the concentration of the particulate matter calculated by the calculation unit 502.
  • the judging unit 506 judges whether the calculated particulate matter concentration is greater than a predetermined alarm concentration.
  • the alarm unit 507 generates an alarm signal, wherein the alarm signal may be an audible alarm signal, for example, an alarm sound or a text or graphic alarm signal.
  • the display unit 15 can also display an alarm signal, for example, display "particles exceeding the standard, please note", or display a triangle icon and flash a prompt.
  • a three-level alarm may be set, and different alarm signals are generated at different levels, and the difference between the calculated particle concentration and the predetermined alarm concentration is obtained, if the difference is between the first predetermined value and the second predetermined value, or the difference And equal to the first predetermined value, generating a first alarm signal, where the difference is between the second predetermined value and the third predetermined value, or the difference is equal to the second predetermined value, generating a second alarm signal, if the difference is greater than or equal to The third predetermined value generates a third alarm signal.
  • the display unit 505, the determining unit 506, and the alarm unit 507 in the embodiment of the present invention correspond to the receiving processing module in the first embodiment of the mobile terminal.
  • the light processing unit when the positions of the light emitting unit and the light processing unit are set such that the light emitting unit directly emits light of a predetermined wavelength into the particulate-containing environment, the light processing unit can receive the light of the predetermined wavelength and encounter the particulate matter in the environment containing the particulate matter.
  • the generated scattered light in addition, the light processing unit includes a photoelectric converter and a filter layer, the filter layer is disposed on the photoelectric converter, and the filter layer filters the light other than the scattered light, so that the photoelectric converter receives only the scattered light and receives the scattering according to the The light generates an electrical signal, and the particle concentration can be calculated according to the electrical signal.
  • the particle concentration sensor of the present invention does not need a power device, a matting chamber, or a dark room, and greatly reduces the volume of the particle concentration sensor, so that the particle concentration sensor More portable, also saves the cost of the particle concentration sensor, which is beneficial to particulate matter The promotion and application of concentration sensors.

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Abstract

L'invention concerne un capteur de concentration de matière particulaire et un terminal mobile. Le capteur de concentration de matière particulaire comprend une unité d'émission de lumière (11) et une unité de traitement optique (12) qui comprend un convertisseur électrique optique (122) et une couche de filtrage (121) disposée sur le convertisseur électrique optique (122). L'unité d'émission de lumière (11) émet la lumière présentant une longueur d'onde prédéterminée dans l'environnement comprenant une matière particulaire. La lumière de diffusion est générée lorsque la lumière avec une longueur d'onde prédéterminée rencontre la matière particulaire et est diffusée. L'unité de traitement optique (12) est située dans la plage de la lumière de diffusion. La lumière de diffusion en son sein, est transmise à travers la couche de filtrage (121), qui filtre la lumière à l'exception de la lumière de diffusion, vers le convertisseur électrique optique (122). Le convertisseur électrique optique est utilisé pour convertir le signal de lumière de dispersion en signal électrique. La taille du capteur de concentration de matière particulaire est considérablement réduite par la structure mentionnée.
PCT/CN2015/088359 2015-08-28 2015-08-28 Capteur de concentration de matière particulaire et terminal mobile WO2017035690A1 (fr)

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PCT/CN2015/088359 WO2017035690A1 (fr) 2015-08-28 2015-08-28 Capteur de concentration de matière particulaire et terminal mobile

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Application Number Priority Date Filing Date Title
PCT/CN2015/088359 WO2017035690A1 (fr) 2015-08-28 2015-08-28 Capteur de concentration de matière particulaire et terminal mobile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117664816A (zh) * 2024-02-02 2024-03-08 深圳市美思先端电子有限公司 一种外光路颗粒物传感器及颗粒物检测方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020018204A1 (en) * 2000-07-28 2002-02-14 Bernd Sachweh Method and apparatus for determining physical collective parameters of particles of gases
CN2733345Y (zh) * 2004-09-07 2005-10-12 南通八达实业有限公司 空气尘埃监测自动控制器
CN104614295A (zh) * 2015-03-04 2015-05-13 郑波 一种根据移动终端检测空气污染指数的方法及系统
CN104807738A (zh) * 2015-03-24 2015-07-29 中国科学院上海光学精密机械研究所 单气溶胶粒子形状实时检测装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020018204A1 (en) * 2000-07-28 2002-02-14 Bernd Sachweh Method and apparatus for determining physical collective parameters of particles of gases
CN2733345Y (zh) * 2004-09-07 2005-10-12 南通八达实业有限公司 空气尘埃监测自动控制器
CN104614295A (zh) * 2015-03-04 2015-05-13 郑波 一种根据移动终端检测空气污染指数的方法及系统
CN104807738A (zh) * 2015-03-24 2015-07-29 中国科学院上海光学精密机械研究所 单气溶胶粒子形状实时检测装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117664816A (zh) * 2024-02-02 2024-03-08 深圳市美思先端电子有限公司 一种外光路颗粒物传感器及颗粒物检测方法

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