CN215573107U - Miniature ambient air quality monitoring device - Google Patents

Abstract

The utility model provides a monitoring function is complete, can require convenient increase and decrease sensor according to the monitoring, and the monitoring result is accurate, and miniature ambient air quality monitoring devices that measurement accuracy is high, includes pole setting, solar cell panel, support and host computer casing, ventilation dish cover, probe seat, ultrasonic wave wind direction air velocity transducer, temperature and humidity sensor, atmospheric pressure sensor, built-in gas sensor's gas sensor subassembly and dust particle sensor and system's host computer, and its special character is: the output port of the system host is also connected with an alarm relay, a module shell is arranged below the bracket, a ventilation net cover is arranged at the lower port of the module shell, and the gas sensor assembly is arranged in the module shell; temperature and humidity sensor and atmospheric pressure sensor set up respectively on the positive and negative of a circuit board, the circuit board is fixed on the aviation plug, the vertical cartridge of circuit board in the urceolus that the lower part was equipped with the vent and with the urceolus is connected, the aviation plug is pegged graft with aviation socket.

Description

Miniature ambient air quality monitoring device

Technical Field

The utility model relates to the field of environmental monitoring, in particular to a miniature environmental air quality monitoring device.

Background

The air quality directly influences the life quality of people, so the air quality monitoring device is very important for air monitoring, the environment monitoring is the basis of environment improvement, and along with the improvement of the living standard of people, the requirement on the environment air quality is also improved. The traditional air quality monitoring device adopts a camera to observe the smoke dust, the generation place and the concentration are not fine, the quantity cannot be quantified, and the use requirement cannot be met. The national monitoring air quality in important areas has less distribution points and high price, each device has a large size, and all the devices need to be calibrated on site in a point-area mode, so that the workload is large, the timeliness is insufficient, the aim of fine control cannot be achieved, and the pollution emission reduction cannot be evaluated. CN211926962U discloses a novel remote-controllable air quality monitoring station, which comprises a supporting rod, an acquisition device arranged at the top end of the supporting rod, and a stabilizing frame sleeved at the bottom end of the supporting rod; the acquisition device comprises a main control box connected with the supporting rod and an acquisition device arranged on the main control box, wherein the main control box comprises a control module for data processing and calculation, an air quality monitoring module for air quality detection, a meteorological parameter module for monitoring environmental state parameters, a display module for human-computer interaction, a communication module for remote communication control and a power supply module for providing working voltage, which are respectively connected with the control module; the control module, the air quality monitoring module, the meteorological parameter module, the display module and the communication module are all connected through a serial communication interface. But this remote control's air quality monitoring station sets up air quality monitoring module and meteorological parameter module inside confined master control case, air quality monitoring module includes two kinds at least among ozone electrochemical sensor, carbon monoxide electrochemical sensor, sulfur dioxide electrochemical sensor, nitrogen dioxide electrochemical sensor and the laser dust sensor, meteorological parameter module includes two kinds at least among wind speed sensor, wind direction sensor, temperature sensor, humidity transducer and the baroceptor, because master control incasement portion is obstructed with outside expert, causes air quality monitoring and meteorological monitoring data inaccurate. In addition, set up air quality monitoring module and meteorological parameter module inside confined master control case, be not convenient for increase and decrease the sensor according to the concrete requirement of monitoring, need the unpacking installation or dismantle the sensor, the operation is more troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a miniature ambient air quality monitoring device which has complete monitoring functions, can conveniently increase and decrease sensors according to monitoring requirements, has accurate monitoring results and high measuring precision.

The technical solution of the utility model is as follows: the utility model provides a miniature ambient air quality monitoring device, includes the pole setting install solar cell panel, support and host computer casing from top to bottom in the pole setting superpose above the support and through the ventilation dish cover that flange and long bolted connection a plurality of openings down and the centre was equipped with the mesosphere, set up the probe seat of built-in ultrasonic sensor circuit board above the ventilation dish cover of the superiors the probe seat top sets up ultrasonic wind direction air velocity transducer, set up system's host computer, display element, 485 interface one, GPS module, 4G wireless communication module, memory chip and power management unit in the host computer casing, set up temperature and humidity sensor and atmospheric pressure sensor in the middle cavity mouth department of the ventilation dish cover of superpose, ultrasonic wind direction air velocity transducer, temperature and humidity sensor and atmospheric pressure sensor constitute meteorological parameter sensor, meteorological parameter sensor passes through amplifier one, The device comprises a first A/D converter, a 485 communication interface, a GPS module, a 4G wireless communication module, a gas sensor assembly with a built-in gas sensor, a dust particle sensor, a second A/D converter, a third A/D converter, a first CPU, a first communication module and a second communication module, wherein the first A/D converter is connected with a system host, the output port of the system host is connected with the 485 communication interface, the GPS module and the 4G wireless communication module, the device also comprises a gas sensor assembly with the built-in gas sensor and the dust particle sensor, the output end of the gas sensor is connected with the second A/D converter through a second amplifier, the output end of the dust particle sensor is connected with the third A/D converter, the output ends of the second A/D converter and the third A/D converter are connected with the first CPU, the output end of the first CPU is connected with the system host through the communication module, and the device is characterized in that: the output port of the system host is also connected with an alarm relay, a module shell is arranged below the bracket, a ventilation net cover is arranged at the lower port of the module shell, and the gas sensor assembly is arranged in the module shell; temperature and humidity sensor and atmospheric pressure sensor set up the positive and negative at a circuit board respectively, the circuit board is fixed on the aviation plug, the vertical cartridge of circuit board is in the urceolus that the lower part was equipped with the vent and the aviation plug with the urceolus upper end mouth links together, the aviation plug is pegged graft with the aviation socket of fixing at probe seat bottom surface center.

Furthermore, set up the module board in the module casing corresponding ventilation net lid position, gas sensor subassembly, dust particle sensor and communication module are installed on the module board.

Furthermore, a collection main board is arranged at the position, corresponding to the dust particle sensor, of the back surface of the module board, and the CPU I and the A/D converter III are arranged on the collection main board.

Further, a gas sensor assembly wire holder is arranged on the module board, and the output end of the gas sensor assembly is electrically connected with the gas sensor assembly wire holder.

Further, the gas sensor component comprises a base with a screw hole on the bottom surface and an aluminum outer sleeve connected with the base through a thread, a vent is arranged in the middle of the upper end surface of the outer sleeve, filter paper and a gasket are arranged in the outer sleeve corresponding to the vent, an upper step and a lower step are arranged on the inner side wall of the base from top to bottom, an amplifying circuit board and a collecting circuit board are respectively arranged on the upper step and the lower step, a gas sensor is arranged on the amplifying circuit board, a sealing ring is arranged between the upper surface of the gas sensor and the gasket, a wire passing hole is arranged on the base, the amplifying circuit board is connected with the collecting circuit board through a pin socket, a second amplifier is arranged on the amplifying circuit board and connected with the gas sensor, a second A/D converter is arranged on the collecting circuit board, and the output end of the second A/D converter is connected with a plug-in piece on the collecting circuit board, the plug-in is the output end of the gas sensor assembly and is penetrated by the wire through hole.

Furthermore, the gas sensors are distributed at the edge of the module plate in an annular manner, so that smooth and uniform air inlet is ensured.

Further, the module board is equipped with the fixed orifices around, just the module board is through passing the screw installation of fixed orifices on the module casing.

Furthermore, the ventilation disc cover is made of PC (polycarbonate) so as to reduce weight and cost.

Further, the gas sensors include a NO2 sensor, a SO2 sensor, a CO sensor, an O3 sensor, and a TVOC sensor.

Further, the dust particle sensor is a PM2.5/1.0 sensor.

The utility model has the beneficial effects that:

1. compact structure, the equipment is convenient, and is small, with low costs, and measuring range is wide, can not only measure gas quality and can also survey relevant meteorological parameter, realizes the high altitude in the atmosphere pollution monitoring.

2. The gas sensor, the dust particle sensor and the meteorological parameter sensor are arranged separately, and are not influenced and interfered with each other, so that the respective measured data are accurate; the sensor can realize the arrangement of modularization cordwood system structure, can increase and decrease wantonly according to the monitoring requirement, makes things convenient for the dismouting, and it is convenient to use the maintenance, reduces the operation maintenance work load.

3. Each gas sensor component forms an integral module and is arranged in an aluminum sleeve, so that the installation is convenient and the radiation protection is realized.

4. The alarm system has an alarm function, and can give an alarm by switching on the alarm system through the alarm relay according to set values, such as exceeding of a monitoring value, expiration of a gas sensor and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection structure of the rack with the stacked disks and the module housing;

FIG. 3 is a schematic view of a vent panel cover stack;

FIG. 4 is a bottom view of the vent panel cover of FIG. 3;

FIG. 5 is a schematic view of the structure of the aviation plug of FIG. 3;

FIG. 6 is a right side view of the circuit board of FIG. 3;

FIG. 7 is a schematic circuit diagram of the system of the present invention;

FIG. 8 is a circuit schematic of an ultrasonic circuit board of the present invention;

FIG. 9 is a schematic view of a module housing;

FIG. 10 is a bottom view of FIG. 9 (with the vent cover removed);

FIG. 11 is a schematic view of a gas sensor assembly construction;

FIG. 12 is a schematic view of the connection structure of the gas sensor module and the module board.

In the figure: the device comprises an upright post-1, a host machine shell-2, a solar cell panel-3, a bracket-4, a module shell-5, a ventilation disk cover-6, an ultrasonic wind direction and wind speed sensor-7, a temperature and humidity sensor 8, a flange-9, a probe seat-10, an ultrasonic circuit board-11, a circuit board 12, an upper seat body-13, an outer cylinder-14, a ventilation opening-1401, a fastening nut-15, an aviation plug-16, a connecting plate-1601, an aviation socket-17, an atmospheric pressure sensor-18, a ventilation net cover-19, a module plate-20, a fixing hole-21, a gas sensor assembly wiring seat-22, a jack-2201, a collecting main board-23, a dust particle sensor-24, a communication module-25 and a power supply module-26, the gas sensor comprises a gas sensor component-27, a base-2701, a collecting circuit board-2702, an amplifying circuit board-2703, a gas sensor-2704, a sealing ring-2705, a gasket-2706, filter paper-2707, an outer sleeve-2708, a pin socket-2709, epoxy resin-2710, a screw hole-2711, an insert-2712 and a wire through hole-2713.

Detailed Description

As shown in fig. 1-7, a miniature ambient air quality monitoring device comprises a vertical rod 1, a solar panel 3, a bracket 4 and a host machine case 2 are arranged on the vertical rod 1 from top to bottom, a module shell 5 is arranged below the bracket 4, a plurality of PC material ventilation disc covers 6 with downward openings and hollow openings are arranged in the middle and are superposed on the bracket 4 and connected with the plurality of openings through flanges 9 and long bolts, the ultrasonic wind direction and wind speed sensor device is characterized in that a probe seat 10 with an ultrasonic circuit board 11 arranged inside is arranged on a ventilation disk cover on the uppermost layer, four ultrasonic wind direction and wind speed sensors 7 are arranged on the top surface of the probe seat 10 in a cross mode and are divided into two groups (two ultrasonic wind direction and wind speed sensors which are opposite to each other are a group), the two groups of ultrasonic wind direction and wind speed sensors work in turn under the control of the ultrasonic circuit board 11, and an upper seat body 13 is installed on the top surface of the probe seat 10 through a support column. A system host (model: ATMEGA128), a display unit connected with the system host, a 485 interface I used for uploading data, a GPS module, a 4G wireless communication module (GPRS), an alarm relay (model: FTR-B3GA4), a U disk, a storage chip, a clock chip and a power management unit are arranged in the host machine shell 2, the power management unit comprises a mains supply rectifier, a solar cell and a power converter, the working power supply of the device is an external solar cell and mains supply, the solar cell and the mains supply rectifier are respectively connected with the power converter, the switching between solar power supply and alternating current power supply is realized through the power management unit, and 12V is changed into 5V through the power converter after the mains supply is rectified.

An outer cylinder 14 with a vent at the lower part is arranged in the middle of the stacked ventilation disk covers 6, a circuit board 12 is vertically inserted in the outer cylinder 14, the top of the circuit board 12 is fixed on a connecting plate 1601 of an aviation plug 16 by screws, the aviation plug 16 is inserted in an upper cylinder opening of the outer cylinder 14 and is fixedly connected with the upper cylinder opening of the outer cylinder 14 through a fastening nut 15 (the aviation plug 16 and the upper cylinder opening of the outer cylinder 14 can be also bonded together), the aviation plug 16 is inserted in an aviation socket 17 fixed at the center of the bottom surface of the probe holder 10, and a temperature and humidity sensor 8 and an atmospheric pressure sensor 18 are respectively arranged on the front and back sides of the circuit board 12 corresponding to the vent 1401; the ultrasonic wind direction and wind speed sensor 7, the temperature and humidity sensor 8 and the atmospheric pressure sensor 18 form a meteorological parameter sensor, and the output end of the meteorological parameter sensor is connected with a system host through a first amplifier (model: LM324) and a first AD converter (model: AD 7705).

As shown in fig. 8, a second CPU (model: ATMEGA128), a second 485 interface for communicating with a system host, a change-over switch connected with the second CPU for controlling the working state of the ultrasonic wind direction and wind speed sensor 7, a collector (model: CS5233) for receiving analog signals output by the ultrasonic wind direction and wind speed sensor 7 and performing a/D conversion, and a third (digital signal) amplifier are arranged on the ultrasonic circuit board, an output end of the third amplifier is connected with the second CPU, and an output signal of the second CPU is connected with the system host through the second 485 interface.

As shown in fig. 9, 10, 11, 12 and 7, a ventilation net cover 19 is disposed at a lower port of the module case 5, the ventilation net cover 19 is connected to the module case 5 by screws, a module board 20 is disposed on the ventilation net cover 19 in the module case 5, a fixing hole 21 is disposed on the module board 20, and the module board 20 is mounted on an inner wall of the module case 5 by screws passing through the fixing hole 21. A module board 20 is provided with a gas sensor assembly wiring seat 22, a collection mainboard 23, a dust particle sensor 24, a communication module 25 (model: MAX3232) for communicating with a system host and a power supply module 26 for providing power supply, the dust particle sensor 24 and the collection mainboard 23 are respectively arranged at the front and back sides of the module board and correspond to the positions, the collection mainboard 23 is provided with a CPU (model: STM32F412), an A/D converter III (model: ADS1115) and a power supply module for supplying power to the CPU I and the A/D converter III, the gas sensor assembly wiring seat 22 is inserted with a gas sensor assembly 27127, the gas sensor assembly 27127 comprises a base 2701 with a screw hole on the bottom surface, an aluminum outer sleeve 2708 connected with the base 2701 through a screw thread, a vent hole is arranged in the middle of the upper end surface of the outer sleeve 2708, a filter paper 2707 and a gasket 2706 are arranged in the outer sleeve 2708 corresponding to the vent hole, an upper step and a lower step are arranged on the inner side wall of a base 2701 from top to bottom, an amplifying circuit board 2703 and an acquisition circuit board 2702 are respectively installed on the upper step and the lower step through screws, a gas sensor 2704 is arranged on the amplifying circuit board 2703, a sealing ring 2705 is arranged between the upper surface of the gas sensor 2704 and a gasket 2706, a wire through hole 2713 is arranged on the base 2701, the amplifying circuit board 2703 and the acquisition circuit board 2702 are connected through a pin socket 2709, a plug-in 2712 on the acquisition circuit board 2702 is positioned in the wire through hole 2713, epoxy resin 2710 is filled in the bottom of the base 2701, a second amplifier and a power supply module for supplying power to the second amplifier are also arranged on the amplifying circuit board 2703, a second A/D converter (type: ADS1115) and another power supply module for supplying power to the second A/D converter are arranged on the acquisition circuit board 2702, and the output end of the second A/D converter is connected with the plug-in 2712, the plug-in 2712 is the output end of the gas sensor assembly, the wire through hole 2713 penetrates through the plug-in (electrically connected) with the corresponding plug hole 2201 of the gas sensor assembly wire holder 22 on the module board 20, the output end of the gas sensor 2704 is connected with the second amplifier, the output end of the second amplifier is connected with the second a/D converter, the output end of the dust particle sensor 24 is connected with the third a/D converter, the output ends of the second a/D converter and the third a/D converter are connected with the input port of the first CPU 23, and the output port corresponding to the first CPU 23 is connected with the system host after passing through the communication module 25. The gas sensor module 27 is fastened to the module board 20 by screws installed in screw holes of the bottom surface thereof.

The gas sensor module 27 has five and internal gas sensors 2704 which are respectively a NO2 sensor, an SO2 sensor, a CO sensor, an O3 sensor and a TVOC sensor. The five gas sensor assemblies 27 are distributed close to the edge of the template set 20, so that smooth and uniform air inlet is ensured. The dust particle sensor 24 is a PM2.5/1.0 sensor, and a PM2.5/1.0 signal detected by the dust particle sensor and a gas signal of the gas sensor 2704 are transmitted to the first CPU after a/D conversion, and are transmitted to the system host through the communication module 25.

The system host computer analyzes and counts the information measured by each sensor, then outputs the information in a wired or wireless way, and simultaneously outputs the information to the alarm relay for being externally connected with the alarm system to alarm according to the set numerical values, such as the monitoring numerical value exceeding the standard, the gas sensor using due and the like, by switching on the alarm system through the alarm relay.

The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A miniature ambient air quality monitoring device comprises a vertical rod, wherein a solar cell panel, a support and a host machine shell are arranged on the vertical rod from top to bottom, a plurality of ventilation disk covers with downward openings and middle hollow openings are superposed on the support and connected through flanges and long bolts, a probe base with a built-in ultrasonic sensor circuit board is arranged on the ventilation disk cover on the uppermost layer, an ultrasonic wind direction and wind speed sensor is arranged at the top of the probe base, a system host, a display unit, a 485 interface I, a GPS module, a 4G wireless communication module, a storage chip and a power management unit are arranged in the host machine shell, a temperature and humidity sensor and an atmospheric pressure sensor are arranged at the hollow openings in the middle of the superposed ventilation disk covers, and the ultrasonic wind direction and wind speed sensor, the temperature and humidity sensor and the atmospheric pressure sensor form a meteorological parameter sensor, the meteorological parameter sensor is connected with the system host through the first amplifier and the first A/D converter, the output port of the system host is connected with the 485 communication interface, the GPS module and the 4G wireless communication module, the device also comprises a gas sensor component with a built-in gas sensor and a dust particle sensor, wherein the output end of the gas sensor is connected with a second A/D converter through a second amplifier, the output end of the dust particle sensor is connected with a third A/D converter, the output ends of the second A/D converter and the third A/D converter are connected with a first CPU, the output end of the first CPU is connected with a system host through a communication module, it is characterized in that the output port of the system host is also connected with an alarm relay, a module shell is arranged below the bracket, a ventilation net cover is arranged at the lower port of the module shell, and the gas sensor assembly is arranged in the module shell; temperature and humidity sensor and atmospheric pressure sensor set up the positive and negative at a circuit board respectively, the circuit board is fixed on the aviation plug, the vertical cartridge of circuit board is in the urceolus that the lower part was equipped with the vent and the aviation plug with the urceolus upper end mouth links together, the aviation plug is pegged graft with the aviation socket of fixing at probe seat bottom surface center.

2. The miniature ambient air quality monitoring device of claim 1, wherein a module board is disposed within the module housing at a location corresponding to the vent screen cover, said gas sensor assembly, dust particle sensor and communication module being mounted on said module board.

3. The miniature ambient air quality monitoring device of claim 2, wherein a collection motherboard is disposed on the back of the module board at a position corresponding to the dust particle sensor, and the first CPU and the third a/D converter are disposed on the collection motherboard.

4. The miniature ambient air quality monitoring device of claim 2 wherein a gas sensor module wire holder is provided on the module board, the gas sensor module output electrically connected to the gas sensor module wire holder.

5. The micro ambient air quality monitoring device according to claim 1, wherein the gas sensor assembly comprises a base with a screw hole on the bottom surface, an aluminum outer sleeve connected with the base through a screw thread, a vent hole is arranged in the middle of the upper end surface of the outer sleeve, filter paper and a gasket are arranged in the outer sleeve corresponding to the vent hole, an upper step and a lower step are arranged on the inner side wall of the base from top to bottom, an amplifying circuit board and a collecting circuit board are respectively arranged on the upper step and the lower step, a gas sensor is arranged on the amplifying circuit board, a sealing ring is arranged between the upper surface of the gas sensor and the gasket, a line passing hole is arranged on the base, the amplifying circuit board and the collecting circuit board are connected through a pin socket, a second amplifier is arranged on the amplifying circuit board and connected with the gas sensor, a second A/D converter is arranged on the collecting circuit board, and the second output end of the A/D converter is connected with a plug-in unit on the acquisition circuit board, and the plug-in unit is the output end of the gas sensor assembly and is penetrated by the wire passing hole.

6. The micro ambient air quality monitoring device of claim 2, wherein the gas sensors are distributed in a ring shape at the edge of the module plate.

7. The micro ambient air quality monitoring device of claim 2, wherein the module plate has fixing holes around it and the module plate is mounted to the module housing by screws passing through the fixing holes.

8. The miniature ambient air quality monitoring device of claim 1, wherein said vent disk cover is made of PC to reduce weight and cost.

9. The micro ambient air quality monitoring device of claim 1, wherein the gas sensor comprises a NO2 sensor, a SO2 sensor, a CO sensor, an O3 sensor, and a TVOC sensor.

10. The miniature ambient air quality monitoring device of claim 1, wherein said dust particle sensor is a PM2.5/1.0 sensor.

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