CN210863680U - Modular air quality monitoring device - Google Patents
Modular air quality monitoring device Download PDFInfo
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- CN210863680U CN210863680U CN201921715912.1U CN201921715912U CN210863680U CN 210863680 U CN210863680 U CN 210863680U CN 201921715912 U CN201921715912 U CN 201921715912U CN 210863680 U CN210863680 U CN 210863680U
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Abstract
The utility model discloses a modularized air quality monitoring device, which comprises a head cover, a basic module, a plurality of sensor modules and a tail cover, wherein the end parts of the head cover, the basic module, the sensor modules and the tail cover are respectively provided with a connecting end; the head end cover, the base module, the plurality of sensor modules and the tail end cover are coaxially arranged and are connected and installed in pairs sequentially through the connecting ends; the sensor module comprises a shell, an air duct, a partition plate component and a sensor component; the basic module comprises a shell, an air duct, a main control circuit board, power supply equipment and air exchange equipment. The utility model discloses simple structure, the design is the modularization completely, and the sensor is installed in general sensor module, conveniently realizes that the arbitrary combination of sensor is changed, and sensor module installs in the device through the mode of concatenating UNICOM, can install and change sensor module as required in the in-service use process, and easy dismounting does benefit to the maintenance of product selection in earlier stage and later equipment.
Description
Technical Field
The utility model belongs to the technical field of environmental monitoring, a air monitor device is related to, concretely relates to modularization air quality monitoring device.
Background
In recent years, governments have developed a plurality of policy documents about environmental protection, and have made fundamental, global and historical strategic deployment on ecological civilization construction, so that the environmental protection industry has come up with historical gold development opportunities.
In the prior art, the structural design of the air quality monitoring device generally aims at completing basic functions.
The non-modular or weak modular design generally uses a simple box structure with a large volume, arranges all parts and sensors required by the equipment inside the box structure, and is matched with devices such as an air pump and the like to control the inflow of the gas to be measured. Most of these products are shipped from the factory or designed for finalizing the design, the number and types of sensors used, the types of detectable gases, and other contents are fixed, and although individual products allow a small range of modification of their functions, the range of modification is narrow, and requires offline modification by professional engineers. Therefore, the product is low in design cost and stable in structure, but is narrow in application range, needs to be customized according to application scenes, is high in later-stage modification and replacement part cost, and is not suitable for dense spaces in cities or other scenes with requirements on the volume and the appearance of detection equipment and large-area laying requirements.
In another scheme, the monitoring device designed in a limited modular mode is adopted, and a universal component or a substrate is matched with a modular component to realize modular design. A certain number of mounting hole sites are arranged on the universal component, and interfaces of all the modular components are customized, so that modular design can be realized in limited module types and limited hole site ranges. The product realizes modular design to a certain extent, and design and assembly cost in later modification and earlier customized design is greatly reduced. However, the number of available modular components is very limited due to the fixed mounting holes, and the modular components need to be customized to achieve uniform structure, which seriously reduces the versatility of the product and increases the design cost.
Disclosure of Invention
For solving a series of problems, the utility model provides a modularization air quality detection device that can simple dismouting, in the product function selection of preceding stage and later stage maintenance of equipment in-process, can both accomplish to reduce its technical demand to the equipment installation personnel to the utmost, the utility model discloses technical scheme is as follows:
the utility model provides a modularization air quality monitoring devices, contains head end cover, basic module, a plurality of sensor module and tail end lid, and the tip of head end cover, basic module, sensor module and tail end lid all is equipped with the link respectively.
The head end cover, the base module, the plurality of sensor modules and the tail end cover are coaxially arranged and are connected and installed in pairs sequentially through the connecting ends; the side surfaces of the head end cover and the tail end cover are respectively and uniformly provided with vent holes.
The sensor module comprises a shell, an air duct, a partition plate component and a sensor component; the housing of the sensor module is of a regular cylindrical structure.
The partition plate component comprises a transverse partition plate, two longitudinal support plates and two longitudinal side plates, the transverse partition plate is transversely arranged in the axial direction of the sensor module, and an opening structure is arranged on the transverse partition plate; the longitudinal supporting plates at two sides are arranged in the sensor module in parallel along the axial direction of the sensor module and are respectively and vertically connected with two axial sides of the transverse partition plate so as to support the transverse partition plate; an axial channel with openings at two sides is formed among the transverse partition plate, the two support plates and the shell of the sensor module, and the two longitudinal side plates are the same with the radial direction of the sensor module and are respectively connected with the openings at two sides in a sealing mode.
The sensor component is arranged in a space formed by the transverse partition plate, the two support plates, the two side plates and the shell of the sensor module, and comprises a sensor and a sensor module circuit board; the sensor module circuit board is transversely arranged, a switching circuit and a circuit interface are arranged on the sensor module circuit board, a special interface for connecting the sensor is arranged on the switching circuit, and the circuit interface comprises a power supply interface and a communication interface of the sensor module; the sensor is arranged on the sensor module circuit board through a special interface on the switching circuit; the sensor module circuit board is assembled between the two side plates to form an H shape, and is assembled in a space formed by the two support plates, the transverse partition plate and the shell of the sensor module.
The air duct is an axial through hole structure formed between the transverse partition plate and the shell.
The basic module comprises a shell, an air duct, a main control circuit board, power supply equipment and air exchange equipment.
The housing in the base module and the housing of the sensor module are both of a regular cylindrical configuration.
The ventilator is longitudinally arranged in the basic module, is the same as the basic module in the radial direction, and is arranged at one end, close to the adjacent sensor module, in the basic module.
The exhaust holes are uniformly distributed in the radial direction on the shell in the basic module, the power supply equipment is arranged in the shell of the basic module, and the air interchanger, the exhaust holes and the power supply equipment are sequentially consistent with the airflow direction in the basic module along the axial arrangement direction of the basic module.
The main control circuit board is transversely clamped and fixedly arranged in the basic module and comprises a main control chip, data transmission equipment, a replaceable data storage device and a circuit interface.
The air duct in the base module is an axial channel formed between the main control circuit board and the shell in the base module, the transverse partition plate in the sensor module is flush with the main control circuit board in the base module, and the air duct of the sensor module is communicated with the air duct of the base module in the same axial direction.
The ventilator controls the air flow to flow through the sensor module after flowing in from the vent hole of the tail end cover, and then flows into the base module, part of the air flow flows out from the vent hole on the base module, and the other part of the air flow flows out from the vent hole of the head end cover.
Furthermore, connecting plates are respectively arranged at the ends close to the head and the tail in the basic module.
The connecting plates respectively comprise a transverse plate and two longitudinal plates; the two transverse plates are transversely arranged and respectively extend inwards and axially from the head end and the tail end of the basic module and are flush with the main control circuit board, the transverse plate at the head end extends to the outer side end, close to the tail end, of the main control circuit board, and the transverse plate at the tail end extends to the outer side face perpendicular to the air interchanger; the two longitudinal plates at the head end and the two longitudinal plates at the tail end are arranged along the axial direction of the basic module, are respectively and vertically connected with the two axial sides of the transverse plates at the head end and the tail end, and are respectively used for supporting the transverse plates; the axial length of the two longitudinal plates at the head end is the same as that of the transverse plate at the head end, and the axial length of the two longitudinal plates at the tail end is the same as that of the transverse plate at the tail end.
The connecting plates at the head end and the tail end form an outward opening structure with the shell of the basic module respectively.
The connecting end of the inward end of the head end cover and the tail end cover is provided with a protruding piece which is arranged axially; a connecting gap is arranged between a longitudinal supporting plate and a shell in the sensor module, and a protruding piece extends axially from the head end of the sensor module; there is the joint gap between the shell and the connecting plate in the basic module.
The joint clearance of basic module head end closely cooperates with the protruding piece link that the head end was covered, and the protruding piece link that the tail end was covered closely cooperates with the joint clearance of sensor module tail end department mutually, and protruding piece link on the sensor module head end closely cooperates with the joint clearance of adjacent sensor module or basic module tail end mutually.
Preferably, the sensor module and the base module are each of a segmented cylindrical construction.
Preferably, the ventilation device in the base module has a rounded square shape.
Preferably, the air exchange device is a fan.
The circuit interface on the main control circuit board in the basic module provides a female end interface for accessing the circuit interface on the sensor module circuit board in the next sensor module.
The circuit interface on the sensor module circuit board comprises a power supply interface and a communication interface, the circuit interface is divided into a male end interface and a female end interface, the male end interface is used for being connected into the female end interface in the basic module or the female end interface on the sensor module circuit board in the previous sensor module, and the female end interface is used for being connected into the male end interface of the circuit interface on the sensor module circuit board in the next sensor module.
The switching circuit on the sensor module circuit board unifies different communication data interfaces of various sensors into an RS485 bus interface through the single chip microcomputer, and the sensor module is connected into a power supply circuit and an RS485 bus in a circuit parallel mode; the main control chip on the basic module is an RS485 bus host, data reading and writing and instructions of all sensor modules on the circuit are controlled through the RS485 bus, and a master-slave working mode that a single bus is connected with a plurality of sensors in parallel is achieved through a modbus protocol.
The data of the sensor in the sensor module is transmitted to the switching circuit through the special interface, the switching circuit outputs the data to the main control chip on the main control circuit board in the base module through the circuit interface, the main control chip writes the acquired data into the replaceable data storage device to serve as local backup, and the acquired data are uploaded to the remote server through the data transmission equipment.
And 4 circuits, namely a power supply anode (VCC), a power supply Ground (GND), an RS485 bus A line and an RS485 bus B line, are respectively arranged in the male end interface and the female end interface.
The data transmission equipment is an internet of things communication module.
Preferably, the tail end cover is provided with a longitudinal filter means.
The utility model has the advantages that:
(1) the utility model discloses simple structure, the design is complete modularization, and the sensor is installed in general sensor module, conveniently realizes the arbitrary combination of sensor and changes, and sensor module installs in the device through the mode of concatenating UNICOM, can install and change sensor module as required in the actual use process; in principle, the upper limit of the number of the sensor modules is not accessed, the actual access number is only limited by a communication protocol, power supply power and structural strength, the assembly and disassembly are convenient, and the selection of products at the early stage and the maintenance of equipment at the later stage are facilitated;
(2) the structure is compact, and the lamp is easy to hide in positions such as street lamps, ceilings and the like;
(3) the sensor module and the base module are internally provided with air channels, the air channels are sequentially connected in series and integrally communicated, convection is formed through ventilation equipment, ventilation and heat dissipation are considered, the sensor and the air channels in the sensor module are connected through the opening, mutual interference of the sensor is avoided, and the sensor module can be applied to indoor and outdoor air quality monitoring or online detection of concentration of substances contained in other gases.
Drawings
Fig. 1 is a schematic exploded view of the present invention;
FIG. 2 is an exploded view of a sensor within a sensor module, a sensor module circuit board and side plates;
fig. 3 is a side view of the present invention;
FIG. 4 is a front view of the sensor module;
FIG. 5 is a cross-sectional view of a sensor module;
FIG. 6 is a front view of the base module;
FIG. 7 is a side view of a base module;
FIG. 8 is a cross-sectional view of a base module;
fig. 9 is a schematic circuit diagram according to the present invention.
Reference numerals: the sensor comprises a head end cover 1, a base module 2, a sensor module 3, a tail end cover 4, a shell 5, an air duct 6, a protruding piece 7, a vent hole 8 and a circuit interface 9;
the main control circuit board 21, the power supply equipment 22, the ventilation equipment 23, the exhaust hole 24, the transverse plate 25 and the longitudinal plate 26;
Detailed Description
Example 1
The appearance of the present embodiment is shown as a cylindrical segmented structure.
A modularized air quality monitoring device comprises a head end cover 1, a base module 2, a sensor module 3 and a tail end cover 4; the sensor module 3 adopts a universal design, and the sensors 34 can be installed in the sensor module 3 in any way or in combination. In the whole device, a plurality of sensor modules 3 can be installed according to actual conditions or requirements.
The end parts of the head cover 1, the base module 2, the sensor module 3 and the tail end cover 4 are respectively provided with a connecting end, the head cover 1, the base module 2, the sensor module 3 and the tail end cover 4 are coaxially arranged, and are mutually connected and installed in pairs sequentially through the connecting ends; the side surfaces of the head end cover 1 and the tail end cover 4 are respectively and uniformly provided with vent holes 8.
A sensor module 3 including a housing 5, an air duct 6, a partition member, and a sensor member; the housing 5 of the sensor module 3 is of cylindrical construction.
The basic module 2 comprises a shell 5, an air duct 6, a main control circuit board 21, a power supply device 22 and a ventilation device 23; the housing 5 in the base module 2 and the housing 5 of the sensor module 3 are both cylindrical in configuration. The bottom of the head end cover 1 is hermetically connected with the base module 2, and the bottom of the tail end cover 4 is hermetically connected with the sensor module 3.
In the sensor module 3, the partition part comprises a transverse partition plate 31, two longitudinal support plates 32 and two longitudinal side plates 33, the transverse partition plate 31 is transversely arranged in the axial direction of the sensor module 3, and the transverse partition plate 31 is provided with a hole structure; the longitudinal supporting plates 32 on both sides are arranged in the sensor module 3 in parallel along the axial direction of the sensor module 3 and are respectively vertically connected with both sides of the transverse partition plate 31 in the axial direction to support the transverse partition plate 31; the transverse partition 31, the two support plates 32 and the housing 5 of the sensor module 3 form an axial passage with two open sides, and the two longitudinal side plates 33 are all in the same radial direction as the sensor module 3 and are respectively connected with the two open sides in a sealing manner.
The sensor components are arranged in the space formed by the transverse partition plate 31, the two support plates 32, the two side plates 33 and the shell 5 of the sensor module 3, and comprise a sensor 34 and a sensor module circuit board 35; the sensor module circuit board 35 is transversely arranged, the sensor module circuit board 35 is provided with a switching circuit and a circuit interface 9, the switching circuit is provided with a special interface connected with the sensor 34, and the circuit interface 9 comprises a power supply interface and a communication interface of the module; the sensor 34 is mounted on the sensor module circuit board 35 through a dedicated interface on the adapter circuit; the sensor module circuit board 35 is assembled between the two side plates 33 and forms an "H" shape, and is assembled and installed in the space formed by the two support plates 32, the transverse partition plate 31 and the housing 5 of the sensor module 3.
The sensors 34 are installed in the universal sensor module 3, any required sensors 34 can be added through a simple serial connection mode, and the sensors 34 are connected to the special interfaces on the switching circuit. Data transmission and power supply in the sensor module 3 are unified in the same group of circuits in a parallel connection mode. The sensors 34 may be selected from sensors 34 for monitoring various data in air or other gases, such as a PM 2.5 sensor, a PM10 sensor, a CO sensor, a NO2 sensor, an H2S sensor, an NH3 sensor, a temperature and humidity sensor, and a barometric pressure sensor, among others.
The air duct 6 in the sensor module 3 is an axial through hole structure formed between the transverse partition plate 31 and the shell 5. The transverse partition plate 31 is provided with an opening structure, namely, the sensor 34 is connected with the air duct 6 through an opening, and the gas flowing through the embodiment can be fully contacted with the sensor 34 so as to be accurately detected by the sensor 34; but the high velocity airflow does not flow directly across the sensor 34 to extend the life of the sensor 34.
Inside the base module 2, the ventilator 23 is longitudinally arranged inside the base module 2 and in the same radial direction as the base module 2, mounted close to one end of the adjacent sensor module 3. In this embodiment, the ventilator 23 is a fan, and the outer frame of the fan is a rounded square.
Exhaust holes 24 are radially and uniformly distributed on the shell 5 in the basic module 2, the power supply equipment 22 is arranged in the shell 5 of the basic module 2, and the air interchanger 23, the exhaust holes 24 and the power supply equipment 22 are sequentially consistent with the airflow direction in the basic module 2 along the axial arrangement direction of the basic module 2. The power supply device 22 converts the external power source into a voltage for the apparatus to use, and the output power of the power supply device 22 is greater than the sum of the powers of all the sensor modules 3 allowed to be accessed.
The main control circuit board 21 is transversely clamped and fixedly arranged in the base module 2 and comprises a main control chip, data transmission equipment, a replaceable data storage device and a circuit interface 9. In the embodiment, the main control chip is a high-performance embedded processor, and provides higher sensor data reading and server data communication speeds on the premise of ensuring the reliability of the equipment; the data transmission equipment is an internet of things communication module.
The air duct 6 in the base module 2 is an axial channel formed between the main control circuit board 21 and the shell 5 in the base module 2, the transverse partition plate 31 in the sensor module 3 is flush with the main control circuit board 21 in the base module 2, and the air duct 6 of the sensor module 3 is communicated with the air duct 6 of the base module 2 in the same axial direction.
The fan control air current flows through sensor module 3 after flowing into from the air vent 8 of tail end lid 4, flows into basic module 2, has sufficient outside air to flow in the wind channel 6 of assurance sensor module 3, and the sensor is connected with 6 trompils in the wind channel, realizes detecting the air current. Part of the air flow exits from the exhaust holes 24 on the base module 2; the other part of the airflow flows into the head cover from the base module 2 and flows out from the vent hole 8 of the head cover, and the part of the airflow can flow to the power supply equipment 22 in the base module 2, so that the air cooling heat dissipation is carried out on the power supply equipment 22, and the influence of temperature change on sensor detection data is avoided.
The circuit interface 9 on the main control circuit board 21 in the base module 2 is only provided with a female terminal interface for accessing a male terminal interface of the circuit interface 9 on the next sensor module circuit board 35.
In the sensor module 3, the circuit interface 9 on the sensor module circuit board 35 is a unified power supply and communication interface, the circuit interface 9 is divided into a male end interface and a female end interface, the male end interface is used for being connected to the female end interface in the base module 2 or the male end interface on the sensor module circuit board 35 in the previous sensor module 2, and the female end interface is used for being connected to the female end interface of the circuit interface 9 on the next sensor module circuit board 35.
The switching circuit on the sensor module circuit board 35 unifies different communication data interfaces of various sensors into an RS485 bus interface through the single chip microcomputer, and the sensor module 3 is connected into a power supply circuit and an RS485 bus in a circuit parallel mode; the main control chip on the basic module 2 is an RS485 bus host, all the sensor modules 3, data reading and writing and instructions on the RS485 bus control circuit are controlled, and a master-slave multi-slave working mode of connecting a plurality of sensors on a single bus in parallel is realized through a modbus protocol. And 4 circuits, namely a power supply anode (VCC), a power supply Ground (GND), an RS485 bus A line and an RS485 bus B line, are respectively arranged in the male end interface and the female end interface. The mode can conveniently realize the replacement and increase and decrease of the sensor module 3, only the sensor module 3 needs to be directly increased or decreased from the circuit, and any professional modification or software upgrading of the product is not needed.
Data of a sensor in the sensor module 3 is transmitted to the switching circuit through a special interface, the switching circuit outputs the data to a main control chip on a main control circuit board 21 in the base module 2 through a circuit interface 9, the replaceable data storage device acquires the data from the main control chip to store local data, the internet of things communication module acquires the data from the main control chip to upload real-time data, the internet of things communication module performs data interaction with a cloud server, and meanwhile, the position of equipment is positioned through a base station positioning mode, and an auxiliary device is installed or pollutant data is analyzed.
Isolation connecting plates are respectively arranged at the two ends of the base module 2 close to the head and the tail.
The isolation connecting plates respectively comprise an isolation plate and a connecting plate, and the connecting plates respectively comprise a transverse plate 25 and two longitudinal plates 26; the transverse plates 25 are transversely arranged and respectively extend inwards and axially from the head end and the tail end of the base module 2 and are flush with the main control circuit board 21, the transverse plate 25 at the head end extends to the outer side surface vertical to the air interchanger 23, and the transverse plate 25 at the tail end extends to the outer side end, close to the tail end, of the main control circuit board 21; the two longitudinal plates 26 at the head end and the two longitudinal plates 26 at the tail end are arranged along the axial direction of the base module 2, and are respectively and vertically connected with the two axial side edges of the transverse plates 25 at the head end and the tail end so as to respectively support the transverse plates 25; the axial length of the first longitudinal plates 26 is the same as that of the first transverse plate 25, and the axial length of the tail longitudinal plates 26 is the same as that of the tail transverse plate 25.
The division boards at the head and tail ends form an outward opening structure with the shell 5 of the base module 2 respectively, and the division boards at the head and tail ends are vertically and hermetically connected with the two opening structures respectively.
The connecting end of the inward end of the head end cover 1 and the tail end cover 4 is provided with a protruding piece 7 which is axially arranged; a connecting gap is reserved between the longitudinal support plate 32 in the sensor module 3 and the shell 5, and the head end of the sensor module 3 is axially extended and provided with a protruding piece 7; there is a connection gap between the connection plate and the housing 5 in the base module 2.
The connection clearance of the head end of the basic module 2 is tightly matched with the connection end of the protruding piece 7 on the head end cover 1, so that the basic module 2 is tightly connected with the head end cover 1; the connecting end of the protruding piece 7 on the tail end cover 4 is tightly matched with the connecting gap at the tail end of the sensor module 3, so that the tail end cover 4 is tightly connected with the sensor module 3; the connection end of the protruding piece 7 at the head end of the sensor module 3 is tightly matched with the connection gap at the tail end of the adjacent sensor module 3 or the base module 2, so that the sensor module 3 is tightly connected with the adjacent sensor module 3 or the base module 2.
A longitudinal filter means may conveniently be provided in the tail end cover 4 to isolate large solid particles such as sand and stone from the outside and to avoid detrimental effects on the device.
Claims (9)
1. A modularized air quality monitoring device is characterized by comprising a head end cover (1), a base module (2), a plurality of sensor modules (3) and a tail end cover (4), wherein the end parts of the head end cover (1), the base module (2), the sensor modules (3) and the tail end cover (4) are respectively provided with a connecting end;
the head end cover, the base module (2), the plurality of sensor modules (3) and the tail end cover (4) are all arranged in the same axial direction and are connected and installed in pairs sequentially through the connecting ends; vent holes (8) are respectively and uniformly distributed on the side surfaces of the head end cover and the tail end cover;
a sensor module (3) comprising a housing (5), an air duct (6), a diaphragm component and a sensor component; the shell (5) of the sensor module is of a regular cylindrical structure;
the partition part comprises a transverse partition plate (31), two longitudinal support plates (32) and two longitudinal side plates (33), the transverse partition plate (31) is transversely arranged in the axial direction of the sensor module (3), and the transverse partition plate (31) is provided with an open pore structure; the longitudinal supporting plates (32) at two sides are arranged in the sensor module (3) in parallel along the axial direction of the sensor module and are respectively and vertically connected with two axial sides of the transverse clapboard (31) to support the transverse clapboard (31); axial channels with openings at two sides are formed among the transverse partition plate (31), the two support plates (32) and the shell (5) of the sensor module (3), and the two longitudinal side plates (33) are the same with the radial direction of the sensor module (3) and are respectively connected with the openings at two sides in a sealing way;
the sensor component is arranged in a space formed by the transverse partition plate (31), the two support plates (32), the two side plates (33) and the shell (5) of the sensor module (3), and comprises a sensor (34) and a sensor module circuit board (35); the sensor module circuit board (35) is transversely arranged, the sensor module circuit board (35) is provided with a switching circuit and a circuit interface (9), the switching circuit is provided with a special interface for connecting the sensor (34), and the circuit interface (9) comprises a power supply interface and a communication interface of the sensor module; the sensor (34) is installed on a sensor module circuit board (35) through a special interface on the switching circuit; the sensor module circuit board (35) is assembled between the two side plates (33) to form an H shape, and is assembled and then installed in a space formed by the two support plates (32), the transverse partition plate (31) and the shell (5) of the sensor module (3);
the air duct (6) is an axial through hole structure formed between the transverse partition plate (31) and the shell;
the basic module (2) comprises a shell (5), an air duct (6), a main control circuit board (21), power supply equipment (22) and ventilation equipment (23);
the shell (5) in the basic module (2) and the shell (5) of the sensor module (3) are both regular cylindrical structures;
the ventilation equipment (23) is longitudinally arranged in the base module (2), has the same radial direction as the base module (2), and is arranged at one end, close to the adjacent sensor module (3), in the base module (2);
exhaust holes (24) are radially and uniformly distributed in a shell (5) in the basic module (2), the power supply equipment (22) is arranged in the shell (5) of the basic module (2), and the air exchange equipment (23), the exhaust holes (24) and the power supply equipment (22) are sequentially consistent with the airflow direction in the basic module (2) along the axial arrangement direction of the basic module (2);
the main control circuit board (21) is transversely clamped and fixedly arranged in the basic module (2) and comprises a main control chip, data transmission equipment, a replaceable data storage device and a circuit interface (9);
an air duct (6) in the base module (2) is an axial channel formed between the main control circuit board (21) and the shell (5) in the base module (2), a transverse partition plate (31) in the sensor module (3) is flush with the main control circuit board (21) in the base module (2), and the air duct (6) of the sensor module (3) is communicated with the air duct (6) of the base module (2) in the same axial direction;
the ventilation equipment (23) controls the airflow to flow into the sensor module (3) from the vent hole (8) of the tail end cover (4) and then flow into the base module (2), part of the airflow flows out from the vent hole (24) on the base module (2), and the other part of the airflow flows out from the vent hole (8) of the head end cover (1).
2. A modular air quality monitoring device according to claim 1,
connecting plates are respectively arranged at the two ends of the base module (2) close to the head and the tail;
the connecting plates respectively comprise a transverse plate (25) and two longitudinal plates (26); the two transverse plates (25) are transversely arranged and axially extend inwards from the head end and the tail end of the basic module (2) respectively and are flush with the main control circuit board (21), the transverse plate (25) at the head end extends to the outer side end, close to the tail end, of the main control circuit board (21), and the transverse plate (25) at the tail end extends to the outer side face perpendicular to the air interchanger (23); the two longitudinal plates (26) at the head end and the two longitudinal plates (26) at the tail end are arranged along the axial direction of the basic module (2), are respectively and vertically connected with the two axial sides of the transverse plates (25) at the head end and the tail end, and are respectively used for supporting the transverse plates (25); the axial length of the two longitudinal plates (26) at the head end is the same as that of the transverse plate (25) at the head end, and the axial length of the two longitudinal plates (26) at the tail end is the same as that of the transverse plate (25) at the tail end;
the connecting plates at the head end and the tail end form an outward opening structure with the shell (5) of the base module (2) respectively.
3. A modular air quality monitoring device according to claim 2,
the connection end of the inward end of the head end cover (1) and the tail end cover (4) is provided with a protruding piece (7) which is arranged axially; a connecting gap is reserved between a longitudinal support plate (32) in the sensor module (3) and the shell (5), and a protruding piece (7) extends axially from the head end of the sensor module (3); a connecting gap is formed between the connecting plate in the base module (2) and the shell (5);
the connection clearance of basic module (2) head end closely cooperates with protruding piece (7) link on head end cover (1), and protruding piece (7) link on tail end cover (4) closely cooperates with the connection clearance of sensor module (3) tail end department mutually, and protruding piece (7) link on sensor module (3) head end closely cooperates with the connection clearance of adjacent sensor module (3) or basic module (2) tail end mutually.
4. A modular air quality monitoring device according to claim 3,
the sensor module (3) and the base module (2) are respectively of a sectional cylindrical structure.
5. A modular air quality monitoring device according to claim 4,
the ventilation equipment (23) in the base module (2) is in the shape of a round square.
6. A modular air quality monitoring device according to claim 5, characterized in that the air exchanging means (23) is a fan.
7. A modular air quality monitoring device according to claim 6,
a circuit interface (9) on a main control circuit board (21) in the base module (2) provides a female end interface for accessing a circuit interface (9) on a sensor module circuit board (35) in the next sensor module (3);
the circuit interface (9) on the sensor module circuit board (35) comprises a power supply interface and a communication interface, the circuit interface (9) is divided into a male end interface and a female end interface, the male end interface is used for being accessed into the female end interface in the base module (2) or the female end interface on the sensor module circuit board (35) in the previous sensor module (3), and the female end interface is used for being accessed into the male end interface of the circuit interface (9) on the sensor module circuit board (35) in the next sensor module (3);
the switching circuit on the sensor module circuit board (35) unifies different communication data interfaces of various sensors into an RS485 bus interface through the single chip microcomputer, and the sensor module is connected into a power supply circuit and an RS485 bus in a circuit parallel mode; the main control chip on the basic module (2) is an RS485 bus host, data reading and writing and instructions of all sensor modules on a circuit are controlled through the RS485 bus, and a master-slave working mode that a single bus is connected with a plurality of sensors in parallel is realized through a modbus protocol;
data of a sensor (34) in the sensor module (3) is transmitted to the switching circuit through a special interface, the switching circuit outputs the data to a main control chip on a main control circuit board (21) in the base module (2) through a circuit interface (9), the main control chip writes the acquired data into a replaceable data storage device to serve as local backup, and the acquired data are uploaded to a remote server through data transmission equipment;
and 4 circuits, namely a power supply anode (VCC), a power supply Ground (GND), an RS485 bus A line and an RS485 bus B line, are respectively arranged in the male end interface and the female end interface.
8. The modular air quality monitoring device of claim 7, wherein the data transmission device is an internet of things communication module.
9. A modular air quality monitoring device according to claim 8, characterized in that a longitudinal filter is provided in the end cover (4).
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| CN112098472B (en) * | 2020-08-18 | 2024-04-16 | 国网河北省电力有限公司电力科学研究院 | Series SF 6 Decomposition product detection sensor, detection device and detection method |
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