An air quality automatic monitoring terminal based on Beidou positioning

Abstract

This invention provides an automatic air quality monitoring terminal based on BeiDou positioning, comprising a device housing, a sensor module, a data acquisition module, a data display module, and a BeiDou positioning module. The sensor module collects air quality data, and the data acquisition module is connected to the sensor module to acquire the data. The BeiDou positioning module acquires the location information of the monitoring terminal in real time. The data acquisition module fuses the air quality data with the corresponding location information and transmits it to the data display module for display. By integrating BeiDou positioning functionality, this invention can accurately obtain the geographical location information of the monitoring point. Simultaneously, by combining various air quality sensors, it enables effective measurement and analysis of air quality-related parameters. It can be widely applied in atmospheric environmental monitoring, urban air quality assessment, pollution source tracing, environmental science research, and related environmental protection decision-making, providing important data support and technical means for ensuring air quality and improving environmental conditions.

Description

Technical Field

[0001] This invention belongs to the field of environmental monitoring and positioning technology, and in particular relates to an automatic air quality monitoring terminal based on Beidou positioning. Background Technology

[0002] With the acceleration of industrialization and urbanization, air quality has become an increasingly prominent concern. Accurate and real-time monitoring of air quality is crucial for environmental protection, public health, and scientific decision-making.

[0003] Traditional air quality monitoring methods rely on manual marking to determine the location of air quality monitoring terminals. On-site engineers mark the locations of these terminals on a map and then feed the location information back to the company's management platform. This approach has several drawbacks, including limited monitoring point distribution, difficulty in achieving comprehensive coverage, and untimely data updates. Furthermore, it lacks accuracy and efficiency in locating and managing monitoring data, and recording the location of a large number of terminals is quite cumbersome.

[0004] The BeiDou Navigation Satellite System boasts high precision and reliability. Combining BeiDou positioning with automatic air quality monitoring terminals provides these terminals with accurate geographic location information, facilitating precise analysis and management of air quality in different regions. This not only allows for a more comprehensive understanding of air quality conditions but also enables better tracing of pollution sources and planning of environmental protection measures.

[0005] Against this backdrop, it is particularly necessary to develop an automatic air quality monitoring terminal based on BeiDou positioning to meet the needs of efficient, accurate, and real-time air quality monitoring and precise positioning, and to promote the further development and improvement of air quality monitoring technology. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic air quality monitoring terminal based on BeiDou positioning, which meets the needs for efficient, accurate, and real-time air quality monitoring and precise positioning. To this end, this invention adopts the following technical solution:

[0007] An automatic air quality monitoring terminal based on BeiDou positioning includes a device housing, a sensor module, a data acquisition module, a data display module, and a BeiDou positioning module. The sensor module is used to collect air quality data; the data acquisition module is connected to the sensor module to acquire the data; the BeiDou positioning module acquires the location information of the monitoring terminal in real time; and the data acquisition module fuses the air quality data with the corresponding location information and transmits it to the data display module for display.

[0008] Furthermore, the sensor module includes various air quality monitoring sensors such as particulate matter sensors and gas sensors; used to monitor various pollutants in the air.

[0009] Furthermore, the data acquisition module is used to process and analyze the received air quality data, and has data preprocessing and storage functions.

[0010] Furthermore, the data display module is used to display the processed air quality data in various modes such as charts and lists, and can use a high-definition display screen.

[0011] Furthermore, the BeiDou positioning module includes a BeiDou chip and an antenna, used to acquire real-time geographical location information of the automatic air quality monitoring terminal.

[0012] Furthermore, the device housing is made of an anti-interference material.

[0013] Furthermore, the data acquisition module is connected to a remote server to achieve data synchronization and remote monitoring.

[0014] Furthermore, the sensor module and the data acquisition module are connected by a shielded cable to reduce interference.

[0015] This invention relates to the field of air quality monitoring, providing a device for an automatic air quality monitoring terminal based on BeiDou positioning. This terminal utilizes advanced sensor technology, data acquisition and processing technology, and the BeiDou positioning system to perform real-time, continuous, and accurate monitoring of air quality in a specific area. By integrating BeiDou positioning functionality, this invention can accurately acquire the geographical location information of monitoring points. Simultaneously, by combining various air quality sensors, such as those monitoring particulate matter (PM2.5, PM10, etc.), harmful gases (sulfur dioxide, nitrogen oxides, carbon monoxide, ozone, etc.), and meteorological parameters (temperature, humidity, air pressure, wind speed, wind direction, rainfall, etc.), it enables effective measurement and analysis of air quality-related parameters. This technology can be widely applied to atmospheric environmental monitoring, urban air quality assessment, pollution source tracing, environmental science research, and related environmental protection decision-making, providing crucial data support and technical means for ensuring air quality and improving environmental conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an automatic air quality monitoring terminal product.

[0017] Figure 2 Flowchart of the positioning algorithm for automatic air quality monitoring terminals.

[0018] Figure 3 This is a schematic diagram of the position correction of the present invention. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] like Figure 1 As shown, an automatic air quality monitoring terminal based on BeiDou positioning includes a device shell, a sensor module 1, a data acquisition module 2, a data display module 3, and a BeiDou positioning module 5. The sensor module is used to collect air quality data. The data acquisition module is connected to the sensor module to obtain data. The BeiDou positioning module obtains the location information of the monitoring terminal in real time. The data acquisition module fuses the air quality data with the corresponding location information and transmits it to the data display module for display.

[0021] The sensor module includes various air quality monitoring sensors such as particulate matter sensors and gas sensors; it is used to monitor various pollutants in the air.

[0022] The data acquisition module is used to process and analyze the received air quality data, and has data preprocessing and storage functions.

[0023] The data display module is used to display the processed air quality data in various modes such as charts and lists, and can use a high-definition display screen.

[0024] The BeiDou positioning module includes a BeiDou chip and an antenna, and is used to obtain the real-time geographical location information of the automatic air quality monitoring terminal.

[0025] The device casing is made of anti-interference material.

[0026] The data acquisition module is connected to a remote server to achieve data synchronization and remote monitoring.

[0027] The sensor module and the data acquisition module are connected by a shielded cable to reduce interference.

[0028] When the equipment starts working, the sampling device begins collecting air samples, and sensor module 1 begins monitoring the concentration of various pollutants in the air. Then, sensor module 1 sends the monitored data to data acquisition module 2 for preliminary processing. The processed data is then sent to local data display module 3 via a 485 interface, and BeiDou positioning module 5 obtains the real-time geographical location information of the automatic air quality monitoring terminal.

[0029] like Figure 2 The flowchart of the air quality automatic monitoring terminal positioning algorithm based on BeiDou positioning of the present invention is shown below:

[0030] When there are four or more satellites, the weighted square method is used to calculate the location of the automatic air quality monitoring terminal.

[0031]

[0032] in,

[0033] Pn is the remote sensing observation distance corresponding to satellite n, which is obtained from the observation data;

[0034] It is the position corresponding to satellite n, obtained from the data returned by the satellite;

[0035] C is the speed of light;

[0036] dtu represents the satellite clock bias;

[0037] In represents the ionospheric delay corresponding to satellite n, obtained from the modeling data;

[0038] Tn is the tropospheric delay corresponding to satellite n, obtained from the modeling data;

[0039] The coordinates of the device are obtained by using the equations of the four known satellites to obtain the data (x, y, z, dtu).

[0040] The above steps provide distance information between the automatic air quality monitoring terminal and the satellite. For devices that are positioning themselves for the first time, this distance information, along with the known position of the satellite, is used to calibrate the position of the automatic air quality monitoring terminal.

[0041] like Figure 3 As shown, the location calibration steps are as follows: Set up 3 fixed points for measurement and obtain geographical coordinate information. Each fixed point is measured 10 times. The distance between each fixed point, a, is less than 20 meters, and the distance b is set according to the actual situation.

[0042] Calculate the average coordinates of each point based on the observed values:

[0043]

[0044] i represents the number of measurements at each point, and j represents the number of fixed points;

[0045] Calculate the point residuals using the observed values ​​and the formula above:

[0046]

[0047] Calculate the sum of squared residuals:

[0048]

[0049] The standard deviations Sx, Sy, and Sz at each point are obtained from the above formulas as follows:

[0050]

[0051] Where v represents the degrees of freedom, v = (i-1)*j;

[0052] The horizontal standard deviation Sxy and the vertical standard deviation Sh can be obtained from the above formulas:

[0053]

[0054] Calculate the distance Di and elevation difference ΔHi between the reference station and each fixed station;

[0055]

[0056] Calculate the horizontal distance measurements Di and the reference value D for 10 sets of measurements. * The difference εDi, and the difference between the measured elevation Hi and the reference value h * The difference εHi;

[0057]

[0058] In the above formula, D on the baseline field * and h * All were determined by the Invar baseline ruler.

[0059] To ensure the accuracy of the calibration, εDi and εHi in the above formula must meet the following conditions:

[0060]

[0061] If εDi and εHi do not satisfy any of the above formulas, the item needs to be recalibrated until the conditions are met.

Claims

1. An automatic air quality monitoring terminal based on BeiDou positioning, comprising a device housing, a sensor module, a data acquisition module, a data display module, and a BeiDou positioning module, characterized in that: The sensor module is used to collect air quality data. The data acquisition module is connected to the sensor module to obtain data. The Beidou positioning module obtains the location information of the monitoring terminal in real time. The data acquisition module fuses the air quality data with the corresponding location information and transmits it to the data display module for display.

2. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The sensor module includes various air quality monitoring sensors such as particulate matter sensors and gas sensors.

3. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The data acquisition module has data preprocessing and storage functions.

4. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The data display module is a high-definition display screen.

5. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The BeiDou positioning module includes a BeiDou chip and an antenna.

6. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The device casing is made of anti-interference material.

7. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The data acquisition module is connected to a remote server to achieve data synchronization and remote monitoring.

8. The automatic air quality monitoring terminal based on BeiDou positioning according to claim 1, characterized in that, The sensor module and the data acquisition module are connected by a shielded cable to reduce interference.

Images