CN213068558U - Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection - Google Patents
Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection Download PDFInfo
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- CN213068558U CN213068558U CN202020938292.4U CN202020938292U CN213068558U CN 213068558 U CN213068558 U CN 213068558U CN 202020938292 U CN202020938292 U CN 202020938292U CN 213068558 U CN213068558 U CN 213068558U
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Abstract
The utility model relates to the technical field of air quality monitoring, in particular to a multi-parameter microenvironment air quality monitoring device capable of rapidly and accurately detecting, which comprises a monitoring device body, wherein the monitoring device body comprises a shell, the shape of the shell is rectangular, and four corners of the shell are arc corners; the bottom surface of the shell is a back plate, the left side of the surface of the shell is provided with a liquid crystal display, and the right side of the surface of the liquid crystal display is provided with a plurality of function keys according to a vertical arrangement sequence; the lower part of the left side surface of the shell is provided with an air inlet hole; the middle part of the right side of the shell is provided with an exhaust port hole; a PCB is arranged in the shell, the left side of the upper bottom of the PCB is provided with an MCU, the left side of the MCU is provided with an LORA module, and a dust particle sensor is arranged above the LORA module; after entering a sensor chamber, gas firstly flows through a flow regulator, and then sequentially passes through the four-electrode gas sensors at uniform speed, so that each sensor is stably and fully contacted with the sampled gas.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an air quality monitoring technology field, concretely relates to multi-parameter microenvironment air quality monitoring devices that can accurate detection fast.
[ background of the invention ]
At present, a large part of air quality monitoring devices only monitor concentration data of one gas singly, and multiple gases need to be monitored by a plurality of instruments, so that time and labor are wasted, and the operation is troublesome.
The environment air quality monitoring sensor in China mostly adopts a three-electrode electrochemical sensor which consists of a W electrode, a C electrode and an R electrode, wherein the W electrode is a working electrode for oxidation reaction, the C electrode is a counter electrode for reduction reaction, and the R electrode is a reference electrode capable of providing constant potential. The traditional three-electrode electrochemical sensor has good stability, but long response time and large zero drift.
The traditional gas monitoring instrument measures by using a gas diffusion principle and has the problems of long sampling time, low speed, poor precision and the like. At present, most wireless sensing networks adopt a 2.4G ZIGBEE communication mode, ZIGBEE modules have the problems of high power consumption, poor penetrability and the like, the transmitting current reaches 50mA, and the wireless sensing networks can only transmit 200 meters at the farthest distance.
[ Utility model ] content
An object of the utility model is to provide a many parameter microenvironment air quality monitoring devices that can accurate detection fast to prior art's defect and not enough.
The utility model relates to a multi-parameter microenvironment air quality monitoring device capable of fast and accurately detecting, which comprises a monitoring device body, wherein the monitoring device body comprises a shell, the shape of the shell is rectangular, and four corners of the shell are arc angles; the bottom surface of the shell is a back plate, the left side of the surface of the shell is provided with a liquid crystal display, and the right side of the surface of the liquid crystal display is provided with a plurality of function keys according to a vertical arrangement sequence;
the lower part of the left side surface of the shell is provided with an air inlet hole; the middle part of the right side of the shell is provided with an exhaust port hole; a PCB is arranged in the shell, the left side of the upper bottom of the PCB is provided with an MCU, the left side of the MCU is provided with an LORA module, a dust particle sensor is arranged above the LORA module, and an air inlet of the dust particle sensor extends out of an air inlet hole of the shell to the outside;
a sensor chamber is arranged on the right side of the dust particle sensor, and an air outlet at the lower part of the right side of the dust particle sensor is communicated with an inlet at the left side of the sensor chamber; an exhaust port is arranged in the middle of the right side of the sensor chamber and extends out of an exhaust port hole in the right side of the shell to the outside; and a four-electrode gas sensor is arranged in the sensor chamber.
Further, a flow regulator is arranged at the inner end of the inlet of the sensor chamber, and the flow regulator is a regulating valve.
Further, the four-electrode gas sensor is made of SO2Sensor, CO sensor, NO2Sensor and O3And (4) forming a sensor.
Furthermore, a drying filter membrane is arranged on a channel through which an air outlet of the dust particle sensor is communicated with the sensor chamber.
Further, a micro fan is arranged at the inner upper part of the dust particle sensor.
Furthermore, the upper part of the left side of the PCB board is provided with a communication interface, and the communication interface is inserted into a communication interface hole at the corresponding position of the shell.
After the structure is adopted, the utility model discloses beneficial effect does: a many parameter microenvironment air quality monitoring devices that can accurate detect fast, it adopts after getting into the sensor room, gaseous flow regulator that flows through earlier, the uniform velocity loops through each four-electrode gas sensor, makes every sensor with by the gaseous stability of sampling, abundant contact, compare the tradition and utilize the diffusion principle to carry out the mode of measuring, improved sampling rate and sampling precision.
[ description of the drawings ]
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:
fig. 1 is a top view of the multi-parameter microenvironment air quality monitoring apparatus of the present invention;
fig. 2 is a bottom view of the multi-parameter microenvironment air quality monitoring device of the present invention;
figure 3 is this the utility model discloses a many parameter microenvironment air quality monitoring devices demolishs the inside structure picture that the backplate was faced upward and is seen the visual angle.
Description of reference numerals:
a dust particle sensor-1; an air inlet-2; an air outlet-3; a sensor chamber-4; SO2 sensor-5; CO sensor-6; NO2A sensor-7; o is3A sensor-8; exhaust port-9; drying the filter membrane-10; PCB board-11; LORA module-12; MCU-13; a communication interface-14; a micro fan-15; a display-16; function key-17; -a back plate-19; shell-20.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to fig. 3, the multi-parameter microenvironment air quality monitoring device capable of fast and accurately detecting according to the present embodiment includes a monitoring device body, the monitoring device body includes a housing 20, the housing 20 is rectangular, and four corners of the housing 20 are arc corners; the bottom surface of the shell 20 is a back plate 19, the left side of the surface of the shell 20 is provided with a liquid crystal display 16, and the right side of the surface of the liquid crystal display 16 is provided with a plurality of function keys 17 in a vertical arrangement sequence;
an air inlet hole is formed in the lower portion of the left side face of the shell 20; the middle part of the right side of the shell 20 is provided with an exhaust port hole;
a PCB (printed circuit board) 11 is arranged in the shell 20, a MCU13 is arranged on the left side of the upper bottom of the PCB 11, an LORA module 12 is arranged on the left side of the MCU13, a dust particle sensor 1 is arranged above the LORA module 12, and an air inlet 2 of the dust particle sensor 1 extends out of an air inlet hole of the shell 20 to the outside;
a sensor chamber 4 is arranged on the right side of the dust particle sensor 1, and an air outlet 3 at the lower part of the right side of the dust particle sensor 1 is communicated with an inlet at the left side of the sensor chamber 4; the middle part of the right side of the sensor chamber 4 is provided with an exhaust port 9, and the exhaust port 9 extends out of an exhaust port hole on the right side of the shell 20 to the outside; a four-electrode gas sensor is arranged in the sensor chamber 4.
Further, a flow regulator is arranged at the inner end of the inlet of the sensor chamber 4, and the flow regulator is a regulating valve.
Further, the four-electrode gas sensor is made of SO2Sensor 5, CO sensor 6, NO2Sensor 7 and O3A sensor 8.
Furthermore, a drying filter membrane 10 is arranged on a channel of the air outlet 3 of the dust particle sensor 1 communicated with the sensor chamber 4.
Further, a micro fan 15 is arranged at the upper part in the dust particle sensor 1. The micro fan 15 is also used as a sampling power source for sucking air from the air suction port 2, so that an additional air pump can be ingeniously omitted, and the sampling power consumption of the device is reduced.
Further, the upper portion of the left side of the PCB 11 is provided with a communication interface 14, and the communication interface 14 is inserted into a communication interface hole at a corresponding position of the housing 20.
The working principle of the utility model is as follows:
in this design, the function keys 17 can implement the functions of turning on, turning off, calibrating, etc. of the device. The liquid crystal display 16 can simultaneously display time, temperature and relative humidity, other environmental parameters, power and recording status.
In the design, the MCU13 is used for controlling the liquid crystal display 16, the function keys 17, the micro fan 15 and the SO2Sensor 5, CO sensor 6, NO2Sensor 7 and O3Sensor 8, LORA module 12.
The specific embodiment is as follows: in this design, the dust particle sensor 1 sucks gas from the inlet port by the micro fan 15, and measures the concentration of PM2.5 and PM10 in the gas.
Then, the gas is filtered by a drying filter membrane 10 after coming out of the gas outlet 3 and then enters the sensor chamber 4; after entering the sensor chamber 4, the gas first passed through a flow regulator and passed through the SO2 sensor 5, CO sensor 6, NO in sequence at a uniform rate of 300ml/min2Sensor 7 and O3The sensors 8 enable each sensor to be in stable and full contact with the sampled gas, and compared with a traditional measuring mode by using a diffusion principle, the sampling speed and the sampling precision are improved.
In this design, the signal that produces when gaseous passing through each sensor is through enlargiing and AD conversion back, gather by MCU13, calculate, data processing, produce concentration result data, the gaseous concentration data of gathering is again through on passing through LORA module 12 with wireless conveying to the server, the user can pass through computer or cell-phone APP access server, obtain relevant information, realize the concentration value of each gas of remote real time monitoring, and carry out the operation such as long-range display of closing, open demonstration and calibration, foretell operation is prior art, the technical staff of this trade can realize easily.
In this design, LORA module 12 has the advantage of low-power consumption, and the transmitting current of this module is only 10mA, has reduced 80% than the wireless module that currently uses commonly, and LORA module 12 has low-power consumption sleep mode moreover, can reduce the consumption of complete machine.
In some embodiments of the present design, the PCB 11 is further provided with a communication interface 14, and the communication interface 14 may also be connected to obtain the collected gas concentration data through a data line.
In some embodiments of the design, the sensor chamber 4 is provided with a sealing ring at the communication position (where the gas outlet 3 of the dust particle sensor 1 is communicated with the sensor chamber 4) and the gas outlet 9, so that gas leakage is prevented, and the sensor chamber is ensured to be a closed space, thereby ensuring the stability and uniformity of sampling.
The power supply mode of the device in the design is battery or solar battery power supply.
The utility model discloses a but many parameter microenvironment air quality monitoring devices of quick accurate detection, it adopts after getting into the sensor room, and gas flows through flow regulator earlier, and the even speed loops through each four-electrode gas sensor, makes every sensor and the gas that is sampled stable, abundant contact, compares the traditional mode of utilizing the diffusion principle to measure, has improved sampling rate and sampling precision; the gas concentration data acquired by the LORA module through wireless transmission not only can remotely monitor the concentration value of each gas in real time and carry out operations such as remote closing display, opening display and calibration, but also can reduce the power consumption of the whole machine due to the advantage of low power consumption of the LORA module.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. A multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected is characterized by comprising a monitoring device body, wherein the monitoring device body comprises a shell, the shell is rectangular, and four corners of the shell are arc corners; the bottom surface of the shell is a back plate, the left side of the surface of the shell is provided with a liquid crystal display, and the right side of the surface of the liquid crystal display is provided with a plurality of function keys according to a vertical arrangement sequence;
the lower part of the left side surface of the shell is provided with an air inlet hole; the middle part of the right side of the shell is provided with an exhaust port hole; a PCB is arranged in the shell, the left side of the upper bottom of the PCB is provided with an MCU, the left side of the MCU is provided with an LORA module, a dust particle sensor is arranged above the LORA module, and an air inlet of the dust particle sensor extends out of an air inlet hole of the shell to the outside; a sensor chamber is arranged on the right side of the dust particle sensor, and an air outlet at the lower part of the right side of the dust particle sensor is communicated with an inlet at the left side of the sensor chamber; an exhaust port is arranged in the middle of the right side of the sensor chamber and extends out of an exhaust port hole in the right side of the shell to the outside; and a four-electrode gas sensor is arranged in the sensor chamber.
2. The multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected according to claim 1, wherein: and a flow regulator is arranged at the inner end of the inlet of the sensor chamber and is a regulating valve.
3. The multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected according to claim 1, wherein: the four-electrode gas sensor is composed of SO2Sensor, CO sensor, NO2Sensor and O3And (4) forming a sensor.
4. The multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected according to claim 1, wherein: and a drying filter membrane is arranged on a channel for communicating the air outlet of the dust particle sensor with the sensor chamber.
5. The multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected according to claim 1, wherein: and a micro fan is arranged at the inner upper part of the dust particle sensor.
6. The multi-parameter microenvironment air quality monitoring device capable of being rapidly and accurately detected according to claim 1, wherein: and the upper part of the left side of the PCB is provided with a communication interface which is inserted in a communication interface hole at the corresponding position of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938292.4U CN213068558U (en) | 2020-05-29 | 2020-05-29 | Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020938292.4U CN213068558U (en) | 2020-05-29 | 2020-05-29 | Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection |
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| CN213068558U true CN213068558U (en) | 2021-04-27 |
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|---|---|---|---|
| CN202020938292.4U Active CN213068558U (en) | 2020-05-29 | 2020-05-29 | Multi-parameter microenvironment air quality monitoring device capable of achieving rapid and accurate detection |
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| CN (1) | CN213068558U (en) |
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