CN210136157U

CN210136157U - PM2.5 and PM10 detection device

Info

Publication number: CN210136157U
Application number: CN201920736119.3U
Authority: CN
Inventors: 李振华; 李清锋; 杨涛; 陈会祥; 刘起光
Original assignee: MH Robot and Automation Co Ltd
Current assignee: MH Robot and Automation Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-03-10
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses a PM2.5 and PM10 detection device, including a base member, install concentration sensor on the base member, one side of concentration sensor is provided with the fan, and the air flows through concentration sensor under the drive of fan, concentration sensor passes through the relay and inserts the singlechip, the singlechip still is connected with wireless communication module; the fan drives indoor air to flow, so that the concentration of the whole indoor PM2.5 and PM10 can be acquired at a fixed position, and the intermittent power supply of the concentration sensor under the control of the relay is combined, so that the service life of the concentration sensor is prolonged, and the monitoring precision is improved.

Description

PM2.5 and PM10 detection device

Technical Field

The utility model relates to an air quality detection area, concretely relates to PM2.5 and PM10 detection device.

Background

PM10 generally refers to particulate matter below 10 microns in size that floats in air for long periods of time, tends to carry contaminants to great distances, results in an extended contamination range, and can also provide a reaction bed for chemical reactions in the atmosphere. And PM2.5 is used as a particulate matter with the aerodynamic equivalent diameter of less than or equal to 2.5 microns in the ambient air, has small particle diameter, strong activity, is very easy to carry toxic substances, can stay in the atmosphere for a long time and scatter far away, is inhaled by a person, can cause pulmonary heart disease, aggravate asthma, cause a series of pathological changes such as chronic nasopharyngitis, chronic bronchitis and the like, and has great harm. At present, people spend most of the time indoors, so that the detection of the indoor PM2.5/PM10 concentration is very important.

The inventor finds that currently, a handheld or placed PM2.5/10 detector is frequently used indoors, the detection mode needs personnel to enter the environment to be detected to check data, remote monitoring cannot be performed, detection data are often limited in the placement position of the detector, and different concentrations of PM2.5/PM10 are caused by different ventilation conditions at different indoor positions, so that the handheld or placed detector is difficult to acquire accurate data; on the other hand, not only is the continuous operation of the detection device always energy consuming, but also the service life of the probe of the detection sensor is difficult to be effectively prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned technical problem, the utility model provides a PM2.5 and PM10 detection device, the PM2.5 and PM 10's of being particularly suitable for indoor environment concentration detection, the mode that drives the air flow through the fan improves the mobility of room air, realizes the intermittent type formula work of sensor through the relay to when improving device measurement accuracy, improved the life of sensor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a PM2.5 and PM10 detection device comprises a substrate, wherein a concentration sensor is mounted on the substrate, a fan is arranged on one side of the concentration sensor, air flows through the concentration sensor under the driving of the fan, the concentration sensor is connected to a single chip microcomputer through a relay, and the single chip microcomputer is further connected with a wireless communication module; the fan also obtains the electric energy through the singlechip, and when the relay closed, concentration sensor and singlechip switch-on, concentration sensor uploads the data of acquireing to the singlechip, and the singlechip is exported through wireless communication module after with the data processing of acquireing.

Furthermore, the single chip microcomputer is connected with an alternating current power supply through a transformer to obtain electric energy.

Furthermore, the base body is provided with a channel, the fan is arranged at one end of the channel, and the concentration sensor is arranged in the channel.

Furthermore, the concentration sensor selects nova PM sensor SDS011, and is communicated with the single chip microcomputer through a serial port.

Furthermore, the relay controls the energy supply of the concentration sensor, the relay is selected from but not limited to an electromagnetic relay and a solid-state relay, and the action of the relay is controlled by the single chip microcomputer.

Furthermore, the lug is provided with a detachable second plate, the wireless communication module is LoRa-SX1278, and the single chip microcomputer is communicated with the outside through the wireless communication module.

Furthermore, the transformer is an alternating current transformer, one end of the alternating current transformer is connected with the single chip microcomputer, and the other end of the alternating current transformer is connected with an alternating current power supply.

Further, the base is a plate, and the plate is mounted to the wall by a connector.

Compared with the prior art, the utility model, possess following beneficial technological effect:

(1) the fan drives indoor air to flow, so that the concentration of PM2.5 and PM10 in the whole room can be acquired at a fixed position, and the intermittent power supply of the concentration sensor under the control of the relay is combined, so that the service life of the concentration sensor is prolonged, and the monitoring precision is improved;

(2) the requirement on real-time performance in the field of air quality detection is relatively low, and the intermittent work of the concentration sensor is controlled in a relay mode, so that the energy consumption of the concentration sensor is reduced;

(3) the data acquired by the singlechip are transmitted to an external element through the wireless communication module, so that the multi-end sharing of the data is realized, and the real-time viewing is facilitated;

(4) the alternating current power supply is adopted, the household power supply is directly connected, power supplies such as a dry battery and the like are not needed, the battery is not needed to be replaced, and the continuous power supply is ensured;

(5) through the combination of plate and connecting piece, realize the holistic wall-hanging installation of device, compare in hand-held type and place the formula, shared space is littleer, does not produce with indoor other settings and interferes.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a data transmission flow chart of the present invention;

fig. 3 is a schematic diagram of the wireless communication module of the present invention;

FIG. 4 is a schematic diagram of the AC-DC conversion structure of the present invention;

FIG. 5 is a schematic diagram of the single-chip microcomputer of the present invention;

fig. 6 is a schematic circuit diagram of the relay of the present invention;

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "mounted", "connected", "fixed", and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.

As introduced in the background art, the concentrations of the indoor PM2.5 and PM10 cannot be remotely monitored in the prior art, and detection data are often limited to the placement of detectors and are difficult to acquire accurate data; on the other hand, the continuous operation of the detection device not only consumes energy all the time, but also the service life of the probe of the detection sensor is difficult to be effectively prolonged, and in order to solve the technical problems, the invention provides a PM2.5 and PM10 detection device.

Example 1

In an exemplary embodiment of the present application, as shown in fig. 1 to 6, the PM2.5 and PM10 detection apparatus includes an AC-DC power conversion module, a relay module, a sensor module, a microprocessor module, and a wireless communication module, the microprocessor module is connected to an AC power supply through the AC-DC power conversion module, one end of the relay module is connected to the AC power supply through the AC-DC power conversion module, the other end of the relay module is connected to the sensor module, and the relay module, the sensor module, and the wireless communication module are all electrically connected to the microprocessor module; the microprocessor module adopts a single chip microcomputer, the sensor module adopts a concentration sensor, the AC-DC power supply conversion module adopts a transformer, and the AC power supply is a household circuit;

furthermore, the concentration sensor selects nova PM sensor SDS011, and is communicated with the singlechip through a serial port;

when the concentration sensor works, a special laser beam is generated by a special laser module, and light scattering can be caused when particles pass through a detection area. The scattered light is converted into electrical signals which are amplified and processed, and the number and diameter of the particles can be obtained by analysis, since the waveform of the signal has a certain relationship with the particle diameter. The concentration sensor is communicated with the single chip microcomputer through a serial port, digital output is achieved, stability and reliability are achieved, the requirement for real-time performance in the field of air quality detection is relatively low, the intermittent operation of the concentration sensor is controlled through a relay, and energy consumption of the concentration sensor is reduced.

Furthermore, the wireless communication module selects LoRa-SX1278, the single chip microcomputer is communicated with the outside through the wireless communication module, PM2.5/10 data obtained by measurement of the sensor is firstly sent to the single chip microcomputer through a serial port, the single chip microcomputer transmits the data to the wireless communication module SX1278, and the SX1278 is wirelessly transmitted to the intelligent node. The intelligent node forwards the data to the server, and a user can check the data through a WEB browser and an APP and also can inquire historical data.

Through the wireless communication module, the data acquired by the singlechip are transmitted to an external element, so that the data are shared at multiple ends, and the real-time viewing is facilitated.

Example 2

In another embodiment of the present application, the PM2.5 and PM10 detection devices are different from embodiment 1 in that they further include a base and a fan mounted on the base.

The concentration sensor is arranged on the base body, a fan is arranged on one side of the concentration sensor, air flows through the concentration sensor under the driving of the fan, the concentration sensor is connected to the single chip microcomputer through a relay, and the single chip microcomputer is further connected with a wireless communication module; the single chip microcomputer is connected with an alternating current power supply through a transformer to obtain electric energy; the substrate is provided with a passage, the fan is arranged at one end of the passage, and the concentration sensor is arranged in the passage and used for measuring the concentrations of PM2.5 and PM10 in air flowing through the concentration sensor.

Through the mode that sets up the passageway, the fan combines with the passageway, is convenient for form the wind channel, makes the air flow of concentration sensor department more stable to measuring precision has been guaranteed.

Further, the base is a plate, and the plate is mounted on the wall through a connecting piece;

through the combination of plate and connecting piece, realize the holistic wall-hanging installation of device, compare in hand-held type and place the formula, shared space is littleer, does not produce with indoor other settings and interferes.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The PM2.5 and PM10 detection device is characterized by comprising a base body, wherein a concentration sensor is mounted on the base body, a fan is arranged on one side of the concentration sensor, air flows through the concentration sensor under the driving of the fan, the concentration sensor is connected into a single chip microcomputer through a relay, and the single chip microcomputer is further connected with a wireless communication module.

2. The PM2.5 and PM10 detection device of claim 1, wherein the single chip microcomputer is powered by an AC power source through a transformer.

3. A PM2.5 and PM10 sensing device as claimed in claim 1, wherein the base body is provided with a passage, the fan is provided at one end of the passage, and the concentration sensor is mounted in the passage for measuring the concentration of PM2.5 and PM10 in the air passing through the concentration sensor.

4. The PM2.5 and PM10 detection device of claim 1 or 3, wherein the concentration sensor is nova PM sensor SDS011, and the concentration sensor communicates with the single chip microcomputer through a serial port.

5. The PM2.5 and PM10 detection device of claim 1, wherein the relay controls the energy supply of the concentration sensor, the relay is selected from but not limited to an electromagnetic relay and a solid state relay, and the action of the relay is controlled by a single chip microcomputer.

6. The PM2.5 and PM10 detection device of claim 1, wherein the wireless communication module is LoRa-SX1278, and the single chip microcomputer communicates with the outside through the wireless communication module.

7. The PM2.5 and PM10 detection device of claim 2, wherein the transformer is an AC transformer, one end of the AC transformer is connected with the single chip microcomputer, and the other end of the AC transformer is connected with an AC power supply.

8. A PM2.5 and PM10 testing apparatus as claimed in claim 1, wherein the substrate is a plate mounted to the wall by connectors.