CN114414731A - Air quality acquisition equipment and acquisition method based on mobile terminal positioning service - Google Patents

Abstract

The invention discloses an air quality collection device and a collection method based on a mobile terminal positioning service. The air quality data continuous collection device comprises an air quality monitoring module, a PCB board, a single chip, a bluetooth data module, an information storage module, and a collection device composed of an electric core. terminal and cloud service platform. The collection method includes the following steps: setting a sampling interval threshold, the device terminal combines the location information provided by the cloud service platform to determine whether the time and distance are consistent with the threshold, and if so, obtain the current point air pollutant data, otherwise continue to search. The present invention provides a method for acquiring air pollutant data in a continuous area, and by collecting fine-grained air pollutant data in the area, the air condition of the target area can be more intuitively reflected. In addition, the present invention uses the position information provided by the mobile terminal to replace the positioning module, thereby reducing the equipment production cost and improving the economic benefit of the enterprise.

Description

A kind of air quality collection equipment and collection method based on mobile terminal positioning service

technical field

The invention relates to an air quality collection device and a collection method based on a mobile terminal positioning service, and belongs to the technical field of air pollutant detection equipment and methods.

Background technique

With the development of my country's industrialization, a large amount of industrial waste gas and automobile exhaust gas are discharged into the atmosphere, which leads to the rapid deterioration of air quality and causes many damages to people's health. Studies have shown that severe air pollution will cause great harm to the human respiratory tract and physiological functions, causing chronic bronchitis, bronchial asthma, lung cancer and other diseases. In addition, a large number of air pollutants can easily cause abnormal weather phenomena such as smog and acid rain, which brings inconvenience to people's production and life.

At present, the existing air quality collection devices on the market generally have problems such as relatively discrete distribution of data collection sources, relatively single types of air pollutant collection, and high cost. After investigation, it was found that the collection equipment used to measure air pollution data are all scattered point collection, that is, users can only obtain air pollution data at fixed collection points, and do not have the ability to collect continuous regional air quality data. In addition, the existing collection equipment can only collect data of a certain type of pollutants, and does not have the function of collecting multiple data. Due to the high-cost hardware such as positioning module and display screen, the production cost of such acquisition equipment is relatively high, and the economic benefit is relatively low.

Coarse-grained weather forecast can no longer satisfy people's pursuit of healthy life, and people have begun to seek accurate monitoring of air quality. There are often spatial differences in the composition of air pollutants in different regions. For example, the content of nitrogen oxides and sulfur oxides in the air pollutants in the surrounding areas of roads is significantly higher than that in other regions, while the PM2. more prominent. For researchers who study air quality in different regions, there is a need for data on various air pollutants. Therefore, whether in scientific research or civilian use, there is a broad market for the acquisition of multi-category air pollutant data.

SUMMARY OF THE INVENTION

In view of the above problems in the prior art, the present invention provides an air quality collection device and collection method based on a mobile terminal positioning service, so as to solve the problems of high production cost, relatively fixed collection points, and high production cost of air pollutant collection devices currently on the market. The problem of collecting pollutants is relatively single.

In order to achieve the above purpose, the technical solution adopted in the present invention is: an air quality acquisition device based on mobile terminal positioning service, comprising an air quality monitoring module, a Bluetooth data module, an information storage module and a PCB board; the air quality monitoring module, The bluetooth data module and the information storage module are electrically connected to the microcontroller; the air quality monitoring module is used for real-time monitoring and data transmission of major air pollutants such as nitrogen oxides, sulfides, and suspended particulate matter; the information storage module is used for The pollutant-related data is stored; the bluetooth data module is used to connect the mobile terminal user with the collection device; the single-chip microcomputer is connected to the cloud service platform; the cloud service platform is used to apply for the location service authority to the mobile terminal user.

A collection method of air quality collection equipment based on mobile terminal positioning service, comprising the following steps;

S1. First, set the measurement threshold, that is, the interval time and distance of the collection points;

S2. The cloud service platform applies for obtaining the mobile terminal location service permission, and transmits the location information to the collection device;

S3. The single-chip microcomputer starts timing through the built-in timer, and uses the position information to calculate the user's moving distance;

S4. The single-chip computer determines whether the detection interval time and distance are consistent with the previously set threshold, and if they are consistent, the current point air pollutant data is recorded;

S5. The air quality monitoring module transmits the collected air pollutant data to the information storage module; the information storage module determines the data type in combination with the instructions sent by the single-chip microcomputer, and generates the pollutant time data series T _i and the pollutant distance in combination with the air pollutant data. A data sequence D _i ; wherein, the pollutant time data sequence T _i and the pollutant distance data sequence D _i are respectively used to store the collected isochronous air pollutant data and isometric air pollutant data;

S6. After the collection process is over, the collection device uses the time or distance sequence data to generate the special data storage format file proposed by the present invention, reads the file through the cloud service platform, and presents it visually for the user.

Further, the step S1 is specifically:

S11. The user opens the cloud service platform and creates a new collection process;

S12. The user sets the measurement threshold according to the demand for data accuracy, including the interval distance and interval time;

S13. Connect with the acquisition device through the Bluetooth function of the mobile terminal, and transmit the instruction to start acquisition and the measurement threshold to the acquisition device.

Further, the step S2 is specifically:

S21. The cloud service platform applies to the mobile terminal for location service permissions;

S22. Use the positioning service to obtain the user's current point position information, specifically the pair of x and y coordinates;

S23. The cloud service platform uses the Bluetooth function to transmit the location information to the information storage module in the collection device.

Further, the step S3 is specifically:

S31. After the acquisition device receives the acquisition instruction and the measurement threshold, the single-chip microcomputer starts the timer to start timing;

S32. The single-chip microcomputer calls the position information in the information storage module to calculate the user's moving distance. The formula for calculating the distance is as follows:

Among them, d is the distance, x ₁ and x ₂ are the x-coordinates of the starting point and the user's current position, respectively, and y ₁ and y ₂ are the y-coordinates of the starting point and the user's current position, respectively;

S33. When the timer duration is equal to the threshold value, the timer automatically returns to zero, and starts from zero to count the next acquisition cycle;

S34. When the user's moving distance is equal to the threshold, set the user's current point as the starting point, and start from zero to calculate the distance for the next collection cycle.

Further, the step S4 is specifically:

S41. After the microcontroller starts timing and calculates the user's moving distance, it compares the time and distance with the threshold to retrieve the points that meet the time or space threshold;

S42. The single-chip microcomputer sends the collection instruction to the air quality monitoring module, and collects the air pollutant data at the current point.

Further, the step S6 is specifically:

S61. The user sends an instruction to end the collection process to the collection device through the cloud service platform;

S62. The single-chip microcomputer calls the air pollutant data sequence in the information storage module, and generates a special data storage file format pmd file;

S63. The single-chip microcomputer transmits the data to the cloud service platform through the Bluetooth data module, and the cloud service platform reads the pmd file and presents the data visually on the platform.

Further, the pmd file format is defined as: the file content consists of a 4-line file header and pollutant data. The file header is specifically: the first line is type, the value is T/D, depending on whether the acquisition type is an equidistant sequence or an isochronous sequence; the second line is time/distance, which indicates the duration or distance between two points, and the unit is / The third line is number, which reflects the number of collection points; the fourth line is date, which represents the end time of the collection process; the content of pollutant data consists of serial number, data of major air pollutants and location information of collection points.

The beneficial effects of the present invention are as follows: the main function of the present invention is to collect data of various major pollutants in the air for research and use by scientific researchers and to provide reference for residents to travel. In addition, the invention innovatively adopts the technology of obtaining air quality data location information based on the mobile terminal positioning service, which greatly reduces the production cost of the invention and the energy consumption in actual use, and effectively solves the problem that the production cost of similar equipment on the market is too high. question. On the other hand, the present invention innovatively proposes to detect timed, fixed-point and continuous air quality data, which greatly facilitates scientific researchers to conduct research on air quality in a large area.

Description of drawings

1 is a schematic structural diagram of a collection device of the present invention;

Fig. 2 is the use flow chart of the collection method of the present invention;

Fig. 3 is a schematic diagram of an example of a dedicated isochronous data storage file of the present invention;

FIG. 4 is a schematic diagram of an example of a dedicated isometric data storage file of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention, and not to limit the scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention, and the terms used herein in the description of the present invention are only for describing specific implementations The examples are not intended to limit the invention.

Referring to FIG. 1 , an air quality acquisition device based on a mobile terminal location service according to an embodiment further includes the following components: an air quality monitoring module, a Bluetooth data module, an information storage module, and a single-chip microcomputer connected to a PCB board, an air quality detection module, The bluetooth data module and the information storage module are electrically connected with the single-chip microcomputer, and the battery cell supplies power to all electrical components. The air quality monitoring module is located on the top of the PCB board, between the air inlet and the air outlet, so that the air can fully contact the surface of the module and collect data more accurately. The batteries are installed at the bottom of the main control box.

The present invention provides a collection device for obtaining air pollutant data with location information by using the mobile terminal positioning service. The device does not need to install a positioning module, and obtains the location information by connecting with the mobile terminal, thereby reducing the equipment production cost and solving the problem of similar domestic equipment. more expensive issues.

Referring to FIG. 2 , a method for collecting air quality collecting equipment based on a mobile terminal positioning service according to an embodiment is specifically:

S11. The user opens the cloud service platform of the present invention through a mobile device, and clicks the "New Collection Process" service of the cloud service platform;

S12. The user sets the measurement threshold according to the demand for data accuracy. Among them, the measurement threshold includes the interval time and interval distance of the collection points, and the units are /min and /m respectively;

S13. The cloud service platform is connected with the acquisition device through the Bluetooth function;

S14. The cloud service platform transmits the set threshold value and the instruction to start the collection to the collection device through the Bluetooth data module, and the threshold value is stored in the information storage module in the collection device.

S21. The cloud service platform applies to the mobile terminal for positioning permission;

S22. The cloud service platform uses the positioning service to obtain the user's current location information, and converts it into an x, y coordinate pair;

S23. Convert the longitude and latitude coordinates provided by the positioning service into x, y coordinate pairs through the coordinate conversion function of the cloud service platform;

S24. The cloud service platform uses the Bluetooth function to transmit the converted location information to the information storage module in the acquisition device.

S31. The user's handheld collection device starts moving collection along the collection route;

S32. After the acquisition device obtains the start acquisition instruction, start the timer to start timing;

S33. The single-chip microcomputer calls the position information in the information storage module, sets the current point as the starting point, and calculates the user's moving distance from zero. The formula for calculating the distance is as follows:

Among them, d is the distance, x ₁ and x ₂ are the x-coordinates of the starting point and the user's current position, respectively, and y ₁ and y ₂ are the y-coordinates of the starting point and the user's current position, respectively;

S34. The single-chip computer compares the distance and duration with the threshold. When the distance or duration is consistent with the threshold, the following actions are taken respectively:

S35. When the timer duration is equal to the threshold value, the timer automatically returns to zero, and starts timing the next collection point from zero. The single-chip microcomputer sends a collection instruction to the air quality monitoring module;

S36. When the moving distance of the user is equal to the threshold, set the current point of the user as the starting point, and start to measure the distance of the next collection point. The single-chip microcomputer sends the acquisition instruction to the air quality monitoring module.

S4. After the air quality monitoring module obtains the instruction, it starts to collect data on major air pollutants such as nitrogen oxides, sulfides, suspended particulate matter in the air;

S51. The air quality monitoring module transmits the collected data to the information storage module;

S52. The information storage module stores the isochronous air pollutant data sequence and the air pollutant data equidistant sequence respectively from the isochronous data and the isometric data;

S53. The isochronous sequence and the equidistant sequence of air pollutant data are represented by symbols T _i and D _i respectively.

S61. The user sends an instruction to end the collection process to the collection device through the cloud service platform;

S62. The single-chip microcomputer calls the air pollutant data sequence in the information storage module, and generates the special data storage file format pmd file of the present invention.

The S63.pmd file format is specified as:

The file content consists of a 4-line file header and contaminant data. The file header is specifically: the first line is type, and the value is T/D, which depends on the isometric sequence or the isochronous sequence; the second line is time/distance, which indicates the duration or distance between two points, in units of /min; The third row is number, which reflects the number of collection points; the fourth row is date, which represents the end time of the collection process. The content of pollutant data consists of serial number, data of major air pollutants and location information of collection points;

S63. The single-chip microcomputer transmits the data to the cloud service platform through the Bluetooth data module, and the cloud service platform reads the pmd file through the specific mechanism of the present invention, and visualizes the data on the platform.

The main function of the present invention is to collect data of various pollutants in the air for research and use by scientific researchers and to provide reference for residents to travel. In addition, the invention innovatively adopts the technology of obtaining air quality data location information based on the mobile terminal positioning service, which greatly reduces the production cost of the invention and the energy consumption in actual use, and effectively solves the problem that the production cost of similar equipment on the market is too high. question. On the other hand, the present invention innovatively proposes to detect timed, fixed-point and continuous air quality data, which greatly facilitates scientific researchers to conduct research on air quality in a large area. The present invention also provides a method for acquiring air pollutant data in a continuous area, which can more intuitively reflect the air condition of the target area. In addition, the present invention uses the position information provided by the mobile terminal to replace the positioning module, thereby reducing the equipment production cost and improving the economic benefit of the enterprise.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims (8)

1. An air quality acquisition device based on mobile terminal positioning service is characterized by comprising an air quality monitoring module, a Bluetooth data module, an information storage module and a PCB (printed circuit board); the air quality monitoring module, the Bluetooth data module and the information storage module are electrically connected with the single chip microcomputer; the air quality monitoring module is used for monitoring main air pollutants such as nitrogen oxides, sulfides and suspended particulate matters in real time and transmitting data; the information storage module is used for storing the related data of the pollutants; the Bluetooth data module is used for connecting a mobile terminal user with acquisition equipment; the single chip microcomputer is connected with the cloud service platform; the cloud service platform is used for applying for positioning service permission to a mobile terminal user, and the device supplies power through the battery cell.

2. A collection method of air quality collection equipment based on mobile terminal positioning service is characterized by comprising the following steps;

s1, firstly, setting a measurement threshold, namely the interval duration and distance of acquisition points;

s2, the cloud service platform applies for obtaining a mobile terminal positioning service authority and transmits position information to the acquisition equipment;

s3, the single chip starts timing through a built-in timer, and the user moving distance is calculated by utilizing the position information;

s4, judging whether the detection interval time and the distance are consistent with a preset threshold value or not by the single chip microcomputer, and recording air pollutant data of the current point if the detection interval time and the distance are consistent with the preset threshold value;

s5, the air quality monitoring module transmits the acquired air pollutant data to the information storage module; the information storage module judges the data type by combining the instruction sent by the singlechip and respectively generates a pollutant time data sequence T by combining air pollutant data_iData series D of distances from pollutants_i(ii) a Wherein the time data series T of the pollutants_iData series D of distances from pollutants_iThe data acquisition module is respectively used for storing the acquired isochronous air pollutant data and the equidistant air pollutant data;

and S6, after the acquisition process is finished, the acquisition equipment generates the special data storage format file provided by the invention, reads the file through the cloud service platform and visually presents the file for the user.

3. The collecting method of the air quality collecting device based on the mobile terminal location service as claimed in claim 1, wherein the step S1 specifically includes:

s11, opening a cloud service platform by a user, and building an acquisition flow;

s12, a user sets a measurement threshold value according to the requirement on data accuracy, wherein the measurement threshold value comprises an interval distance and an interval duration;

and S13, connecting the Bluetooth function of the mobile terminal with the acquisition equipment, and transmitting an instruction for starting acquisition and a measurement threshold value to the acquisition equipment.

4. The collecting method of the air quality collecting device based on the mobile terminal location service as claimed in claim 1, wherein the step S2 specifically includes:

s21, the cloud service platform applies for positioning service authority to the mobile terminal;

s22, acquiring the position information of the current point of the user by using a positioning service, wherein the position information is specifically an x coordinate pair and a y coordinate pair;

and S23, the cloud service platform transmits the position information to an information storage module in the acquisition equipment by using the Bluetooth function.

5. The collecting method of the air quality collecting device based on the mobile terminal location service as claimed in claim 1, wherein the step S3 specifically includes:

s31, after the acquisition equipment receives the acquisition instruction and the measurement threshold value, starting a timer by the single chip microcomputer to start timing;

and S32, calling the position information in the information storage module by the singlechip, and calculating the moving distance of the user. The calculation distance formula is as follows:

wherein d is a distance, x₁、x₂X-coordinate, y, of the starting point and the current position of the user, respectively₁、y₂Respectively as the y coordinates of the starting point and the current position of the user;

s33, when the time length of the timer is equal to a threshold value, the timer automatically returns to zero, and the next acquisition cycle is timed from zero;

and S34, when the moving distance of the user is equal to the threshold value, setting the current point of the user as a starting point, and calculating the distance of the next acquisition cycle from zero.

6. The collecting method of the air quality collecting device based on the mobile terminal location service as claimed in claim 1, wherein the step S4 specifically includes:

s41, after the single chip starts timing and calculates the moving distance of the user, the time and the distance are compared with a threshold value, and then a point which meets the time or space threshold value is searched;

and S42, the single chip microcomputer sends the acquisition instruction to the air quality monitoring module to acquire the air pollutant data of the current point.

7. The collecting method of the air quality collecting device based on the mobile terminal location service as claimed in claim 1, wherein the step S6 specifically includes:

s61, a user sends an acquisition process ending instruction to acquisition equipment through a cloud service platform;

s62, calling an air pollutant data sequence in the information storage module by the single chip microcomputer, and generating a special data storage file pmd file;

and S63, the single chip microcomputer transmits the data to a cloud service platform through the Bluetooth data module, and the cloud service platform reads pmd files and visually presents the data on the platform.

8. The collection method of the air quality collection device based on the mobile terminal location service as claimed in claim 7, wherein the pmd file format is defined as: the file content consists of 4 rows of file headers and pollutant data; the file header specifically comprises: the first is type, with a value of T/D, depending on whether the acquisition type is an equidistant sequence or an isochronous sequence; a second action time/distance, which represents the time length or distance of the interval between two points, and the unit is/minute or/meter; the third row is number and reflects the number of acquisition points; the fourth row is date which represents the end time of the acquisition process; the pollutant data content is composed of a serial number, various main air pollutant data and acquisition point position information.

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