CN210534089U

CN210534089U - Air detection device

Info

Publication number: CN210534089U
Application number: CN201920430615.6U
Authority: CN
Inventors: 李建伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-05-15
Anticipated expiration: 2029-04-01

Abstract

The utility model relates to an empty gas detection surveys technical field, especially relates to an empty gas detection surveys device. Including last casing and the lower casing that closes mutually with last casing, be equipped with the inlet port on going up the casing, be equipped with the fan with the corresponding position of inlet port in the upper casing, the internal position that corresponds with the fan of inferior valve is provided with PM2.5 sensor, the air outlet department of PM2.5 sensor is provided with the TVOC sensor that is used for monitoring TVOC content, the internal TVOC sensor left side that lies in of inferior valve is provided with the TVOC filter chamber, the exit correspondence of TVOC filter chamber is provided with CO ₂ sensor, correspond with CO ₂ sensor on the casing down and be provided with the venthole, the internal PM2.5 sensor below that lies in of inferior valve is provided with the control circuit board that is used for handling transmission data, the control circuit board below is provided with and mobile terminal signal connection WIFI communication board, lithium cell, PM2.5 sensor, TVOC sensor and CO ₂ sensor all with control circuit board electric connection. The utility model discloses portable, measuring effect is good.

Description

Air detection device

Technical Field

The utility model relates to an empty gas detection surveys technical field, especially relates to an empty gas detection surveys device.

Background

With the progress and development of society, the living standard of people is higher and higher, but the environment pollution is followed. Along with the pollution of the environment, the air pollution is more and more serious, and the detection of the air quality is more and more important in the production and the life of people. Air detection in the broad sense refers to the detection of the constituent components of air. In the narrow sense of air detection, mainly from the application point of view, indoor air detection is the focus of research. The air quality detection device is used for detecting air quality by means of decoration pollution caused by substances harmful to human bodies contained in indoor decoration materials, furniture and the like and released into home and office environments. The national 'civil construction engineering indoor environmental pollution control regulation' issued and implemented in 2006 lists five main pollutants: formaldehyde, benzene, ammonia gas, total volatile organic compounds TVOC, radioactive radon and the like.

The existing air detection device is generally placed indoors for monitoring the indoor air quality and cannot be carried about. In public occasions, the air quality of the place where the air conditioner is located cannot be monitored at any time, and the air conditioner cannot be evaded in time when the air is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome not enough among the prior art, avoid the air detection device to be difficult for carrying, and provide a portable air detection device, the utility model discloses portable, measuring effect is good.

In order to realize the above purpose, the utility model discloses a technical scheme is: a portable air detection device comprises an upper shell and a lower shell buckled with the upper shell, wherein an air inlet is formed in the upper shell, a fan used for providing stable air volume is arranged in the upper shell at a position corresponding to the air inlet, a rechargeable lithium battery is arranged in the upper shell below the fan, and the fan is electrically connected with the lithium battery;

the internal position that corresponds with the fan of inferior valve is provided with the PM2.5 sensor that is arranged in detecting PM2.5 content in the air, the air outlet department of PM2.5 sensor is provided with the TVOC sensor that is used for monitoring TVOC content, it is provided with the TVOC filter chamber to lie in TVOC sensor left side down the casing, the exit correspondence of TVOC filter chamber is provided with CO₂Sensor, the lower shell is provided with CO₂The sensor corresponds and is provided with the venthole, it is provided with the control circuit who is used for handling transmission data to lie in PM2.5 sensor below in the lower casingThe board, control circuit board below is provided with the WIFI communication board with mobile terminal signal connection, lithium cell, PM2.5 sensor, TVOC sensor and CO₂The sensors are electrically connected with the control circuit board.

In order to further realize the utility model discloses, can prefer following technical scheme for use:

preferably, the upper shell is provided with a USB interface capable of charging the lithium battery, and the USB interface is electrically connected with the lithium battery.

Preferably, the internal PM2.5 sensor air inlet department that lies in of inferior valve is provided with the intake pipe of loudspeaker form, intake pipe horn mouth and fan phase-match, the thin mouthful of and PM2.5 sensor air inlet sealing connection of intake pipe.

Preferably, a filter screen is arranged at the air outlet of the PM2.5 sensor.

Preferably, a filter box is arranged in the filter cavity, and activated carbon is arranged in the filter box.

Preferably, a protective cover for protecting the control circuit board is arranged above the control circuit board in the lower shell, and the outlet of the filter cavity penetrates through the protective cover and the CO₂The sensors correspond.

Preferably, the control circuit board comprises a data processing module and an electric quantity monitoring module.

Preferably, the side wall of the lower shell is provided with a small hole, an LED lamp is arranged in the small hole, and the LED lamp is electrically connected with the electric quantity monitoring module.

Preferably, the fan is a magnetic suspension fan.

Preferably, any one of the four corners of the upper shell and the lower shell is provided with a rope hanging opening.

The utility model has the advantages that:

1. the utility model discloses in be provided with the PM2.5 sensor, the air outlet department of PM2.5 sensor is provided with the filter screen, PM2.5 sensor air outlet department corresponds and is provided with the TVOC sensor, TVOC sensor left side is provided with the TVOC filter chamber, the exit of TVOC filter chamber is provided with CO₂Sensor, PM2.5 sensor, TVOC sensingVessel and CO₂The sensor all with control circuit board electric connection, the micronic dust in the filter screen filtered air, TVOC in the TVOC filter chamber filtered air can effectively avoid micronic dust, TVOC to cause the influence to the testing result of other sensors, make the testing result more accurate.

2. The utility model discloses in be provided with casing and lower casing, go up casing spiral-lock and on casing down, go up arbitrary angle and be provided with relatively on the four corners of casing and lower casing and hang the rope mouth, hang and to connect the cable loop on the rope mouth, this convenient dismouting of structure easily carries.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a front view of the upper housing according to embodiment 1 of the present invention;

fig. 3 is a schematic view of the inside of an upper shell in embodiment 1 of the present invention;

fig. 4 is a bottom view of the housing in embodiment 1 of the present invention;

wherein: 1-upper shell, 2-fan, 3-lithium battery, 4-PM2.5 sensor, 5-TVOC sensor, 6-TVOC filter cavity and 7-CO₂The device comprises a sensor, 8-a control circuit board, 9-a WIFI communication board, 10-a USB interface, 11-an air inlet pipe, 12-a filter box, 13-a protective cover, 14-an LED lamp, 15-an air inlet hole, 16-an air outlet hole, 17-a lower shell and 18-a rope hanging port.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-4, a portable air detection device comprises an upper casing 1 and a lower casing buckled with the upper casing, wherein at least two air inlets 15 are formed in the upper casing 1, a fan 2 is installed in the upper casing 1 at a position corresponding to the air inlets 15, a rechargeable lithium battery 3 is installed below the fan 2, a USB interface 10 is formed in a position corresponding to the lithium battery on the side wall of the upper casing 1, and the USB interface 10 is electrically connected with the lithium battery;

a PM2.5 sensor 4 for detecting the content of PM2.5 in air is arranged in a position, corresponding to the fan 2, in the lower shell 17, a trumpet-shaped air inlet pipe 11 is arranged at an air inlet of the PM2.5 sensor 4, the large end of the air inlet pipe 11 is matched with the fan 2, and the narrow-end of the air inlet pipe 11 is hermetically connected with an air inlet of the PM2.5 sensor; the fan 2 is a magnetic suspension fan 2, the magnetic suspension fan is low in noise and high in stability, stable air volume can be provided for the PM2.5 sensor, and the measurement accuracy of the sensor is guaranteed; the PM2.5 sensor is a DY-A1 laser PM2.5 sensor, and the measurement precision is high; the air inlet pipe is in a horn shape, so that sucked air flow can be more stable, and the influence caused by vortex flow is reduced;

a TVOC sensor 5 for monitoring the content of TVOC in the air is installed at an air outlet of a PM2.5 sensor 4 in the lower shell 17, a TVOC filter cavity 6 is installed on the left side of the TVOC sensor 5, a filter box 12 is installed in the TVOC filter cavity 6, the side wall of the filter box is provided with small holes, activated carbon is filled in the filter box, the diameter value of the activated carbon is larger than that of the small holes, the activated carbon can effectively adsorb the TVOC in the air, and the influence of the TVOC on other sensors is reduced; CO is correspondingly arranged at the outlet of the TVOC filter cavity 6₂Sensor 7, CO₂The sensor can monitor CO in the air₂In such an amount that one can avoid CO in the air₂Dizziness caused by over-high content;

in the lower shell 17 is located CO₂A control circuit board 8 for processing transmission data is installed on the right side of the sensor 7, a WIFI communication board 9 capable of being in signal connection with the mobile terminal is installed below the control circuit board 8, and the WIFI communication board 9 is connected with the control circuit board through a FPC (flexible printed circuit) flexible flat cable; a protective cover 13 for protecting the control circuit board is arranged between the PM2.5 sensor and the control circuit board in the lower shell, and an outlet of the TVOC filter cavity penetrates through the protective cover and the CO₂Corresponding to the sensors, wires of the PM2.5 sensor 4 and the TVOC sensor 5 penetrate through the protective cover 13 to be electrically connected with the control circuit board 8; on the lower housing side wall with CO₂The position corresponding to the sensor 7 is provided with an air outlet 16, and the detected gas is discharged from the air outlet 16; the control circuit board is provided with a data processing module and an electric quantity monitoring module, the data processing module adopts an ST cortex m4 series chip, the main frequency running speed can reach 168MHz, the electric quantity monitoring module adopts a T1 BQ17441, and the WIFI communication board 9 adopts an EMW3162 module;

the side wall of the lower shell is provided with a small hole, the LED lamp 14 is installed in the small hole, the LED lamp 14 is electrically connected with the control circuit board, and when the electric quantity monitoring module on the control circuit board monitors that the electric quantity of the lithium battery is insufficient, the LED lamp 14 is controlled to work, so that a user is reminded to charge in time to avoid the loss of the battery; any one of the four corners of the upper shell and the lower shell is oppositely provided with a rope hanging opening, and a rope buckle 18 can be hung at the rope hanging opening, so that the carrying is convenient.

The working process of the embodiment is as follows:

fan suction air, the air enters into PM2.5 sensor through the intake pipe, PM2.5 content in the PM2.5 sensor detection air, the micronic dust in the filter screen filtration air of PM2.5 sensor air outlet department, TVOC sensor detects the TVOC's in the air after the filter screen filters, the air admission TVOC filter chamber that contains TVOC, the filter chamber filters TVOC, the export discharge of filter chamber is followed to the air after the filtration, by CO₂The sensor detects CO in the air after filtering TVOC₂Content of (a), PM2.5 sensor, TVOC sensor and CO₂The sensor transmits the detected data to the control circuit board, the control circuit board processes the summarized data, and the control circuit board transmits the processed dataAnd the data are output to the WIFI communication board, and the WIFI communication board transmits the data to the mobile terminal.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an empty gas detection surveys device, includes casing and the lower casing that buckles mutually with last casing, its characterized in that: the upper shell is provided with an air inlet, a fan used for providing stable air volume is arranged in the upper shell at a position corresponding to the air inlet, a rechargeable lithium battery is arranged in the upper shell below the fan, and the fan is electrically connected with the lithium battery;

the internal position that corresponds with the fan of inferior valve is provided with the PM2.5 sensor that is arranged in detecting PM2.5 content in the air, the air outlet department of PM2.5 sensor is provided with the TVOC sensor that is used for monitoring TVOC content, it is provided with the TVOC filter chamber to lie in TVOC sensor left side down the casing, the exit correspondence of TVOC filter chamber is provided with CO₂Sensor, the lower shell is provided with CO₂The sensor correspondence is provided with the venthole, the internal PM2.5 sensor below that lies in of inferior valve is provided with the control circuit board that is used for handling transmission data, the control circuit board below is provided with the WIFI communication board with mobile terminal signal connection, lithium cell, PM2.5 sensor, TVOC sensor and CO₂The sensors are electrically connected with the control circuit board.

2. An air detection unit as claimed in claim 1, wherein: the upper shell is provided with a USB interface capable of charging the lithium battery, and the USB interface is electrically connected with the lithium battery.

3. An air detection unit as claimed in claim 1, wherein: the internal PM2.5 sensor air inlet department that lies in of inferior valve is provided with the intake pipe of loudspeaker form, intake pipe horn mouth and fan phase-match, the thin mouthful of and PM2.5 sensor air inlet sealing connection of intake pipe.

4. An air detection unit as claimed in claim 3, wherein: and a filter screen is arranged at the air outlet of the PM2.5 sensor.

5. An air detection unit as claimed in claim 1, wherein: the TVOC filter chamber is internally provided with a filter box, and the filter box is internally provided with activated carbon.

6. An air detection unit as claimed in claim 1, wherein: the lower casing is internally provided with a protective cover used for protecting the control circuit board above the control circuit board, and the outlet of the filter cavity penetrates through the protective cover and the CO₂The sensors correspond.

7. An air detection unit as claimed in claim 1, wherein: the control circuit board comprises a data processing module and an electric quantity monitoring module.

8. An air detection unit as claimed in claim 1, wherein: the LED lamp is characterized in that a small hole is formed in the side wall of the lower shell, an LED lamp is arranged in the small hole, and the LED lamp is electrically connected with the electric quantity monitoring module.

9. An air detection unit as claimed in claim 1, wherein: the fan is a magnetic suspension fan.

10. An air detection unit as claimed in claim 1, wherein: any one of the four corners of the upper shell and the lower shell is provided with a rope hanging opening oppositely.