Multi-channel particulate matter concentration monitoring equipment

Abstract

The utility model relates to multi-channel particulate matter concentration monitoring equipment, belongs to the technical field of air particulate matter monitoring, and solves the problem that the concentrations of particulate matters with different particle sizes cannot be synchronously detected in the prior art. The monitoring equipment comprises a box body; the air transmission assembly is arranged in the box body and is used for pumping air in the environment into the monitoring equipment; the monitoring assembly is arranged in the box body, the monitoring assembly is provided with a light emitting source and a plurality of detection channels, photoelectric sensors with different installation angles are arranged in the detection channels, the light emitting source is used for irradiating air in the detection channels so as to generate scattered light with different scattering intensities and scattering angles, and the photoelectric sensors are arranged in the detection channels. And the photoelectric sensor is used for capturing the scattered light and generating a corresponding electric signal representing the concentration of the particulate matters. According to the utility model, concentration monitoring of particulate matters with different particle sizes is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of air particle monitoring, and in particular relates to a multi-channel particle concentration monitoring device. Background Art

[0002] With the intensification of industrial pollution, air pollution has seriously affected human health. The detection of air quality has become particularly important. The detection, analysis and research of particulate matter in the air are the focus of current environmental protection work. Some particulate matter has a large area, strong activity, and is easily accompanied by toxic and harmful substances. It also stays in the atmosphere for a long time and moves a long distance. Therefore, it has a relatively greater impact on human health and atmospheric environmental quality.

[0003] Existing particle concentration monitoring equipment can only monitor a single particle concentration at a time. When monitoring the concentration of particles of different particle sizes, it is necessary to replace the test probe back and forth, and there are technical problems such as the inability to synchronously detect the concentration of particles of different particle sizes. Utility Model Content

[0004] In view of the above analysis, the embodiments of the present utility model aim to provide a multi-channel particulate matter concentration monitoring device to solve one or more of the above problems existing in the prior art.

[0005] The purpose of the utility model is achieved in this way:

[0006] A multi-channel particulate matter concentration monitoring device, comprising:

[0007] Box;

[0008] An air transmission component, disposed in the box, for drawing air from the environment into the monitoring device;

[0009] A monitoring component is arranged in the box, and the monitoring component has a light source and multiple detection channels. Each of the detection channels is provided with a photoelectric sensor with a different installation angle. The light source is used to irradiate the air in each of the detection channels to generate scattered light with different scattering intensities and scattering angles. The photoelectric sensor is used to capture the scattered light and generate a corresponding electrical signal representing the concentration of particulate matter.

[0010] Furthermore, it also includes a filter assembly, including a filter cover and a filter net, the filter cover is used to filter impurities in the air with a particle size greater than 2 mm, and the filter net is used to filter impurities in the air with a particle size greater than 0.1 mm.

[0011] Furthermore, it also includes a dehumidification component, one end of which is connected to the filter component and the other end is connected to the monitoring component. The dehumidification component includes a resistance wire and a dehumidifier, which is used to heat and then cool the air filtered by the filter component to remove water from the air.

[0012] Furthermore, it also includes a control component, which is arranged in the box and includes a control module. The control module is used to control the air transmission component, the dehumidification component and the monitoring component.

[0013] Furthermore, the control component also includes a data processing module for converting the photoelectric signal output by the photoelectric sensor into a digital signal, and storing and transmitting the digital signal.

[0014] Furthermore, the air transmission component includes a vacuum pump and a flow meter, and the control module controls the opening or closing of the vacuum pump according to the indication of the flow meter.

[0015] Furthermore, it also includes a display component, which is arranged on the side wall of the box and is electrically connected to the control component. The display component includes a touch screen for receiving and displaying the digital signal transmitted by the data processing module, as well as setting or adjusting monitoring parameters and sending the monitoring parameters to the control module.

[0016] Furthermore, the display component also includes a button for turning on or off the multi-channel particulate matter concentration monitoring device.

[0017] Furthermore, it also includes a battery assembly, which is arranged in the box and is used to provide power to the filter assembly, the air transmission assembly, the dehumidification assembly, the monitoring assembly, the control assembly and the display assembly.

[0018] Furthermore, the material of the box body includes aluminum alloy, and a handle is provided on the side wall to make the monitoring device easy to carry.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] a) Photoelectric sensors with different installation angles are arranged in multiple detection channels to capture scattered light with different scattering angles and intensities generated by the light source irradiating particles of different particle sizes, thereby generating an electrical signal representing the concentration of particles, thereby realizing synchronous monitoring of the concentration of particles of different particle sizes in the air;

[0021] b) The multi-channel particulate matter concentration monitoring device provided by the utility model dehumidifies the filtered air through a dehumidification component to prevent moisture in the air from entering the monitoring device and causing corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the structure of a multi-channel particle concentration monitoring device provided by the utility model;

[0024] Figure 2 A schematic diagram of the structure of the filter assembly provided by the utility model;

[0025] Figure 3 This is an exploded diagram of the multi-channel particle concentration monitoring device provided by the utility model.

[0026] Reference numerals:

[0027] 1-housing; 101-handle; 2-filter assembly; 201-filter cover; 202-filter screen; 3-air transmission assembly; 301-vacuum pump; 302-flow meter; 4-dehumidification assembly; 5-monitoring assembly; 6-control assembly; 7-display assembly; 701-touch screen; 702-button; 8-battery assembly. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments disclosed in this disclosure can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0030] Example 1

[0031] A specific embodiment of the utility model is as follows Figure 1-3As shown, a multi-channel particulate matter concentration monitoring device is disclosed, comprising:

[0032] Box 1;

[0033] An air transmission component 3, disposed in the housing 1, for drawing air from the environment into the monitoring device;

[0034] The monitoring component 5 is arranged in the box body 1. The monitoring component 5 has a light source and multiple detection channels. Each of the detection channels is provided with a photoelectric sensor with a different installation angle. The photoelectric sensor is used to capture the scattered light at different angles generated when the light source irradiates the air in each of the detection channels, and generate a corresponding electrical signal representing the concentration of particulate matter.

[0035] During implementation, the air transmission component 3 in the box 1 draws air from the environment into it and sends it into each detection channel in the monitoring component 5. When the light emitted by the light source shines into the detection channel, particles of different particle sizes in the air have different scattering angles and scattering intensities for the light. By setting the photoelectric sensor at different installation angles in the detection channel to capture scattered light at different scattering angles, electrical signals representing the concentrations of particles of different particle sizes are further generated.

[0036] Exemplarily, the monitoring component 5 is provided with six detection channels and six photoelectric sensors, which are respectively used to detect the concentration of air particles of 0.3μm, 0.5μm, 1.0μm, 2.5μm, 5μm and 10μm. The installation angle of each photoelectric sensor in the detection channel is adaptively adjusted by the staff according to the particle size of the particles to be detected, so that the scattered light generated by the light source irradiating particles of a specific particle size falls vertically on the receiver of the photoelectric sensor.

[0037] Compared with the prior art, the multi-channel particle concentration monitoring device provided in this embodiment, by arranging photoelectric sensors with different installation angles in multiple detection channels, captures scattered light of different scattering angles and scattering intensities generated by a light source irradiating particles of different particle sizes, and then generates an electrical signal representing the particle concentration, thereby realizing synchronous monitoring of the concentration of particles of different particle sizes in the air.

[0038] In this embodiment, a filter assembly 2 is also included, including a filter cover 201 and a filter net 202. The filter cover 201 is used to filter impurities in the air with a particle size greater than 2 mm, and the filter net 202 is used to filter impurities in the air with a particle size greater than 0.1 mm.

[0039] Specifically, in order to prevent impurities and large particles in the air from entering the interior of the equipment and causing pollution, the filter component 2 adopts double-layer filtration, one layer is used to filter large particles with a particle size greater than 2 mm in the air, and the other layer is used to filter impurities with a particle size greater than 0.1 mm in the air, and it is cleaned or replaced regularly.

[0040] In this embodiment, a dehumidification component 4 is also included, one end of which is connected to the filter component 2 and the other end is connected to the monitoring component 5. It includes a resistance wire and a dehumidifier, which is used to heat and then cool the air filtered by the filter component 2 to remove water from the air.

[0041] Specifically, the air in the environment still carries a large amount of moisture after being filtered. If it is not handled, it is easy to cause corrosion to the components inside the equipment. Therefore, the filtered air is first heated and then cooled by the dehumidification component 4 to remove most of the moisture, and then sent to the monitoring component 5 for concentration detection.

[0042] In this embodiment, a control component 6 is further included, which is arranged in the box body 1 and includes a control module. The control module is used to control the air transmission component 3, the dehumidification component 4 and the monitoring component 5.

[0043] Specifically, the control component 6 is electrically connected to the air transmission component 3, the dehumidification component 4 and the monitoring component 5, and performs real-time data exchange and command transmission with the air transmission component 3, the dehumidification component 4 and the monitoring component 5, thereby realizing precise control and monitoring of them.

[0044] In this embodiment, the control component 6 further includes a data processing module for converting the electrical signal output by the photoelectric sensor into a digital signal, and storing and transmitting the digital signal.

[0045] Specifically, the data processing module is responsible for receiving the electrical signal output by the photoelectric sensor and converting it into a digital signal that can be recognized by a computer. The digital signal reflects the actual state of the particle concentration. Then, the data processing module stores and transmits the digital signal to a subsequent system for further analysis or display.

[0046] In this embodiment, the air transmission component 3 includes a vacuum pump 301 and a flow meter 302 , and the control module controls the opening or closing of the vacuum pump 301 according to the indication of the flow meter 302 .

[0047] Specifically, the control module monitors the gas flow conditions in the current device according to the changes in the indication of the flow meter 302. Based on the feedback of the indication of the flow meter 302, the control module intelligently controls the opening or closing of the vacuum pump 301 to maintain appropriate gas flow and pressure in the device. This control mechanism helps to ensure that the device operates in a stable working state and can automatically adjust the operation of the vacuum pump 301 as needed.

[0048] In this embodiment, a display component 7 is also included, which is arranged on the side wall of the box body 1 and is electrically connected to the control component 6. The display component 7 includes a touch screen 701, which is used to receive and display the digital signal transmitted by the data processing module, as well as to set or adjust monitoring parameters and send the monitoring parameters to the control module.

[0049] Specifically, the touch screen 701, as a part of the display component 7, allows the user to intuitively receive and view the digital signal transmitted from the data processing module. In addition to the display function, the touch screen 701 also provides interactivity. The user can set or adjust monitoring parameters, such as alarm thresholds, sampling frequencies, etc., by touching the screen. The monitoring parameters will be sent to the control module to achieve automatic adjustment and control of the system. This design can meet the specific needs of users and improve the flexibility and operability of the equipment.

[0050] In this embodiment, the display component 7 further includes a button 702 for turning on or off the multi-channel particle concentration monitoring device.

[0051] Specifically, the display component 7 also provides a start-stop button 702 for the user to manually start or close the multi-channel particulate matter concentration monitoring device. Through a simple pressing operation, the user can conveniently control the operating status of the monitoring device. The design of the start-stop button 702 helps to improve the controllability of the monitoring device and quickly stop or restart the monitoring process when necessary, thereby more flexibly responding to different monitoring needs and environmental changes.

[0052] In this embodiment, a battery assembly 8 is also included, which is arranged in the box body 1 and is used to provide power to the filter assembly 2, the air transmission assembly 3, the dehumidification assembly 4, the monitoring assembly 5, the control assembly 6 and the display assembly 7.

[0053] Specifically, a charging interface is provided on the side wall of the box body 1 and is connected to the battery assembly 8 so that the battery assembly 8 can use the stored electrical energy to power other components.

[0054] In some embodiments, GPS and 4G antennas are also provided on the side walls of the box 1 for transmitting the digital signal output by the data processing module and the location information of the monitoring device to the background and the mobile terminal.

[0055] In this embodiment, the material of the box body 1 includes aluminum alloy, and a handle is provided on the side wall to make the monitoring device easy to carry.

[0056] Specifically, a carrier plate is detachably connected to the bottom plate of the box body 1, and positioning holes are provided on the carrier plate for installing the air transmission component 3, the dehumidification component 4, the monitoring component 5, the control component 6 and the battery component 8. After each component is installed on the carrier plate, the filter component 2 is connected to the air transmission component 3 and the dehumidification component 4 through an air pipe, and the monitoring component 5 is connected to the other end of the dehumidification component 4, and then the cover plate of the box body 1 is fixed to complete the installation of the monitoring equipment; and the box body 1 is formed by aluminum alloy material, which is light in weight and high in strength. There is a sealing groove on the contact surface between the cover plate and the side wall. After the sealing strip is installed, the sealing of the equipment will be greatly improved, and the sample air after collection will be discharged to the outside of the equipment. The inner wall is affixed with a waterproof and breathable net. The whole equipment has a waterproof and dustproof design to prevent erosion during long-term operation in the external environment.

[0057] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-channel particle concentration monitoring device, characterized in that: include: Box body (1); An air transmission component (3) is arranged in the housing (1) and is used to draw air from the environment into the monitoring device; A monitoring component (5) is arranged in the housing (1), the monitoring component (5) having a light source and a plurality of detection channels, each of the detection channels being provided with a photoelectric sensor at a different installation angle, the light source being used to illuminate the air in each of the detection channels to generate scattered light with different scattering intensities and scattering angles, the photoelectric sensor being used to capture the scattered light and generate a corresponding electrical signal representing the concentration of particulate matter.

2. The multi-channel particulate matter concentration monitoring device according to claim 1, characterized in that: It also comprises a filter assembly (2), comprising a filter cover (201) and a filter net (202), wherein the filter cover (201) is used to filter impurities in the air with a particle size greater than 2 mm, and the filter net (202) is used to filter impurities in the air with a particle size greater than 0.1 mm.

3. The multi-channel particle concentration monitoring device according to claim 2, characterized in that: It also includes a dehumidification component (4), one end of which is connected to the filter component (2) and the other end of which is connected to the monitoring component (5). The dehumidification component (4) includes a resistance wire and a dehumidifier, and is used to heat and then cool the air filtered by the filter component (2) to remove water from the air.

4. The multi-channel particulate matter concentration monitoring device according to claim 3, characterized in that: It also includes a control component (6) which is arranged in the box (1) and includes a control module, wherein the control module is used to control the air transmission component (3), the dehumidification component (4) and the monitoring component (5).

5. The multi-channel particle concentration monitoring device according to claim 4, characterized in that: The control component (6) also includes a data processing module, which is used to convert the electrical signal output by the photoelectric sensor into a digital signal, and store and transmit it.

6. The multi-channel particulate matter concentration monitoring device according to claim 5, characterized in that: The air transmission component (3) comprises a vacuum pump (301) and a flow meter (302), and the control module controls the opening or closing of the vacuum pump (301) according to the indication of the flow meter (302).

7. The multi-channel particulate matter concentration monitoring device according to claim 5, characterized in that: It also includes a display component (7) which is arranged on the side wall of the box (1) and is electrically connected to the control component (6). The display component (7) includes a touch screen (701) for receiving and displaying the digital signal transmitted by the data processing module, and for setting or adjusting monitoring parameters, and sending the monitoring parameters to the control module.

8. The multi-channel particulate matter concentration monitoring device according to claim 7, characterized in that: The display component (7) also includes a button (702) for turning on or off the multi-channel particle concentration monitoring device.

9. The multi-channel particulate matter concentration monitoring device according to claim 8, characterized in that: It also includes a battery assembly (8) which is arranged in the housing (1) and is used to provide electrical energy to the filter assembly (2), the air transmission assembly (3), the dehumidification assembly (4), the monitoring assembly (5), the control assembly (6) and the display assembly (7).

10. The multi-channel particulate matter concentration monitoring device according to claim 1, characterized in that: The material of the box body (1) includes aluminum alloy, and a handle (101) is provided on the side wall to make the monitoring device easy to carry.

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