CN205333613U - Air quality tester - Google Patents

Abstract

The utility model relates to an air quality detector, which belongs to the technical field of environmental monitoring. The detector in the utility model includes a data acquisition module, an MCU, a communication module and a power supply module for power supply. The data acquisition module includes a The sensor installation board on the board is centered on the particle sensor and surrounded by other sensors. The MCU and the power module are fixed on the main control board and fixedly connected to the sensor transfer board through the main control board adapter board to realize various tests. The transmission of parameter signals and the supply of power supply. In addition, the detector is also equipped with a hand-held mobile operating machine for viewing the working status and configuring working parameters. The connection between the sensor adapter board and the main control board adapter board simplifies air quality detection. The internal structure of the instrument is convenient for assembly and maintenance operations. The arrangement of various sensors on the sensor mounting plate ensures the miniaturization of the tester. The tester is compact in structure, low in cost, and can be laid out in a grid.

Description

An air quality detector

technical field

The utility model belongs to the technical field of environmental monitoring, in particular to an air quality detector.

Background technique

At present, the sites of environmental monitoring centers in large and medium-sized cities usually use approved traditional monitoring systems for environmental monitoring. The complete set of traditional monitoring systems costs about 1 million RMB, which is expensive and has a large system volume, high installation and maintenance costs, and limited Therefore, there are very few environmental monitoring center sites in large and medium-sized cities. Environmental monitoring data can reflect the overall air quality of the city from a macro perspective, but cannot reflect it from a micro perspective. The quality of air in local areas and specific areas, therefore, in order to build more environmental monitoring stations to provide more real-time environmental monitoring data, a low-cost, compact, responsive, fast and effective networkable An air quality testing instrument with a grid layout that can undertake complex testing tasks.

Utility model content

The utility model provides an air quality detector, which is compact in structure, low in cost, low in installation and maintenance costs, can be installed in large quantities in various areas of the city, and can realize air quality monitoring in local and specific areas of the city. Quality monitoring.

Concrete technical scheme of the present utility model is:

An air quality detector, the detector includes a power supply module, a data acquisition module, an MCU and a communication module for data transmission with a server, the data acquisition module is connected to the MCU, the MCU is connected to the communication module, and the power module is used to power the entire node Power supply is provided, and the data acquisition module includes a sensor mounting board equipped with a particle sensor, a gas sensor and a temperature and humidity sensor. It is circular, the sensor mounting plate is fixed on the sensor adapter plate, the main control board is installed on the main control board adapter plate, the sensor adapter plate is fixedly connected with the main control board adapter plate, and the particle sensor is fixed on the sensor In the middle of the end face of the mounting plate, the gas sensor and the temperature and humidity sensor are fixed around the particle sensor.

The particle sensor is a PM2.5 sensor based on the light scattering principle, and the gas sensor is a gas sensor based on the electrochemical principle or the metal oxide principle.

The power supply module includes a power management module and a solar panel and a lithium battery connected thereto, and the power management module is also provided with a USB interface.

The communication module includes three kinds of communication modules including WiFi, ZIGBEE and GPRS.

A bluetooth module and an infrared receiver connected to the MCU are fixed on the main control board, and the sensor node is also provided with a mobile operating machine for data transmission with the bluetooth module and the infrared receiver.

The main control board 1 is fixedly provided with a GPS positioning module connected with the MCU.

The beneficial effects of the utility model are: the connection between the data acquisition module and the MCU in the detector is realized through the connection between the sensor adapter board and the main control board adapter board, and the sensor adapter board realizes the fixing of various sensors And signal transfer function, the main control board adapter board realizes the fixing of the main control board and signal transfer, and realizes the electrical connection of the solar panel and lithium battery, and the sensor transfer board is directly connected with the main control board transfer board And between the two, the signal transmission of various parameters to be measured and the power supply are completed. This connection method can simplify the internal structure of the air quality detector and facilitate assembly and maintenance operations. The data acquisition module is centered on the particle sensor, and other The way that the sensors are installed on the circular sensor mounting plate around the centralized layout ensures the realization of the miniaturization of the detector.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a schematic diagram of the principle of connection of each module in the utility model.

In the attached drawings, 1. main control board, 2. main control board adapter board, 3. sensor adapter board, 4. sensor installation board, 5. particle sensor, 6. gas sensor, 7. temperature and humidity sensor, 8. Power management module, 9. Solar panel, 10. Lithium battery, 11. Bluetooth module, 12. Infrared receiver, 13. Mobile operating machine, 14. GPS positioning module.

detailed description

An air quality detector, the detector includes a power supply module, a data acquisition module, an MCU and a communication module for data transmission with a server, the data acquisition module is connected to the MCU, the MCU is connected to the communication module, and the power module is used to power the entire node Power is provided, and the data acquisition module includes a sensor mounting plate 4 equipped with a particle sensor 5, a gas sensor 6, and a temperature and humidity sensor 7. The gas sensor is set to a group of multiples, and the MCU is installed on the main control board 1. The sensor installation The plate 4 is circular, the sensor mounting plate 4 is fixed on the sensor adapter plate 3, the main control board 1 is installed on the main control board adapter plate 2, the sensor adapter plate 3 is fixedly connected with the main control board adapter plate 2, The particle sensor 5 is fixed in the middle of the end face of the sensor mounting plate 4 , and the gas sensor 6 and the temperature and humidity sensor 7 are fixed around the particle sensor 5 .

Specific embodiments, as shown in Figure 1 and Figure 2, in the data acquisition module, the particle sensor 5 is a PM2.5 sensor of the light scattering principle, the gas sensor 6 is a gas sensor of the electrochemical principle or the metal oxide principle, and the particle sensor 5. The gas sensor 6 and the temperature and humidity sensor 7 are fixed on the sensor adapter board 3 and realize the signal transfer function, and the main control board 1 fixed with the MCU is fixed on the main control board transfer board 2 to realize signal transfer, The MCU is responsible for the overall control of the node, the collection of various data, and data transmission. The particle sensor is connected to the MCU through the serial port. The current signals output by various gas sensors are amplified after I/V conversion, and input to AD through the analog switch to be collected and Digitizing.

The power module is fixed on the main control board 1, and it includes a power management module 8 and a solar panel 9 and a lithium battery 10 connected thereto. The power management module 8 is also provided with a USB interface, and the power management module 8 is provided with a charging and discharging circuit. The power supply module provides power supply and management for the solar panel and lithium battery for the entire sensor node through the charging and discharging circuit. The sensor adapter board 3 is directly connected to the main control board adapter board 2 and various parameters to be measured are completed between the two. For signal transmission and power supply, the communication module is fixed on the main control board and includes three communication modules of WiFi, ZIGBEE, and GPRS. The three modules are respectively connected to the MCU. The main control board 1 is fixed with a Bluetooth module 11 connected to the MCU. and infrared receiver 12, the sensor node is also provided with a mobile operator 13 for data transmission with it through the bluetooth module 11 and the infrared receiver 12, the mobile operator is a hand-held mobile operator and is equipped with an operable display screen for sensor node Check the working status, set parameters through the operation display screen and configure working parameters through Bluetooth or infrared signal transmission. The main control board 1 is also fixedly equipped with a GPS positioning module 14 connected to the MCU, and the MCU uses the GPS positioning module 14 The latitude and longitude information of the current deployment location is collected, packaged together with various test parameters and sent to the server through GPRS, ZIGBEE, and WIFI communication modules.

The air quality detector in the utility model performs the signal transmission and power supply of each parameter to be measured through the connection of the sensor adapter board and the main control board adapter board, which simplifies the internal connection structure of the detector and facilitates assembly and maintenance. The data acquisition module is installed on the sensor mounting board in a layout mode centered on the particle sensor and surrounded by other sensors, and each sensor adopts a low-cost, miniaturized, and low-power design sensor, which ensures the detector’s reliability. Miniaturization, the entire air quality detector can also observe the working status of the nodes and configure the working parameters anytime and anywhere through the hand-held mobile operating machine, which greatly facilitates the use and operation process. The air quality detector involved in the utility model is small in size and low in cost. Low, grid layout can be carried out in the city, so as to realize real-time detection of air quality in various regions and specific areas.

Claims (6)

1. A kind of air quality detector, this detector comprises power module, data acquisition module, MCU and the communication module that carries out data transmission with server, data acquisition module is connected with MCU, MCU is connected with communication module, and power module is used for The entire node provides power, and the data acquisition module includes a sensor mounting plate (4) equipped with a particle sensor (5), a gas sensor (6) and a temperature and humidity sensor (7). On the control board (1), it is characterized in that: the sensor installation board (4) is circular, the sensor installation board (4) is fixed on the sensor adapter board (3), and the main control board (1) is installed on the main On the control board adapter plate (2), the sensor adapter plate (3) is fixedly connected with the main control board adapter plate (2), and the particle sensor (5) is fixed in the middle of the end face of the sensor mounting plate (4). The sensor (6) and the temperature and humidity sensor (7) are fixed around the particle sensor (5). 2. An air quality detector according to claim 1, characterized in that: the particle sensor (5) is a PM2.5 sensor based on the principle of light scattering, and the gas sensor (6) is based on an electrochemical principle or a metal oxide sensor. Physical principle gas sensor. 3. A kind of air quality detection instrument according to claim 1, it is characterized in that: described power supply module comprises power management module (8) and the solar panel (9) and lithium battery (10) that are connected with it, power supply The management module (8) is also provided with a USB interface. 4. An air quality detector according to claim 1, characterized in that: said communication module includes three communication modules of WiFi, ZIGBEE and GPRS. 5. A kind of air quality detection instrument according to claim 1, it is characterized in that: the bluetooth module (11) that is connected with MCU and the infrared receiver (12) that are fixed on described main control board (1), sensor The node is also provided with a mobile operating machine (13) for data transmission with it through a bluetooth module (11) and an infrared receiver (12). 6. An air quality detector according to claim 1, characterized in that: said main control board (1) is fixedly provided with a GPS positioning module (14) connected to the MCU.