CN110113438A - A kind of heavy construction environmental monitoring system based on LoRa - Google Patents

Abstract

The invention relates to an environment monitoring system, which is mainly composed of an environment monitoring node, a data concentrator, a display screen, a router, a cloud server, a webpage and a mobile intelligent terminal. The environmental monitoring node monitors the corresponding environmental information based on each sensor, and forwards its information data to the data concentrator. After the data concentrator processes the environmental data, on the one hand, it transmits the environmental data to the display screen through LoRa to realize local environmental monitoring. The data concentrator connects to the router through WiFi, uses the Internet to upload data and store its environmental data in the cloud server. The web page and mobile intelligent terminal software access the server to obtain environmental data, and realize its remote environmental monitoring.

Description

A LoRa-based large-scale building environment monitoring system

technical field

The application background of the present invention belongs to the field of environmental quality monitoring, specifically a large-scale building environment monitoring system based on LoRa. The content of the invention relates to technical fields such as wireless communication, Internet of Things, and cloud service computing. remote monitoring.

Background technique

With the rapid development of computer technology, network technology, control technology, artificial intelligence and other technologies and the improvement of living standards, people's needs for the comfort, safety, energy saving and environmental protection of residential buildings are becoming more and more urgent. Environmental monitoring data is the basis for building environmental quality assessment and intelligent system control.

Environmental monitoring under large buildings has the characteristics of scattered monitoring nodes, many interference factors, and long data transmission distances. At present, common wireless environmental monitoring technologies are mainly based on WiFi, ZigBee, and Bluetooth, but the wireless transmission distances of the above wireless environmental monitoring technologies are relatively long Short and easily disturbed.

LoRa is a low-power wide area network wireless communication technology based on spread spectrum modulation technology. It has the characteristics of large communication range, ultra-low power consumption and strong anti-interference ability. It solves the problem that traditional wireless communication design schemes cannot take into account transmission distance, anti-interference and Therefore, it is widely used in large-scale area monitoring. The use of LoRa wireless communication technology for environmental monitoring of large buildings can effectively improve the wireless transmission distance and anti-interference during transmission.

Contents of the invention

The purpose of the present invention is to provide a LoRa-based large-scale building environment monitoring system to solve the shortcomings of the traditional wireless communication technology in the common wireless environment monitoring system solutions in the background art.

In order to solve the above technical problems, the present invention provides the following technical solutions: a large-scale building environment monitoring system based on LoRa, which can be divided into four parts, namely the environmental monitoring part, the environmental data concentration and transmission part, the data storage part, and the environmental display part. part.

The environmental monitoring part is composed of several environmental monitoring nodes. After the environmental monitoring node collects the corresponding environmental values through the sensor, the node master processes and assembles these values and transmits its data to the data center through the LoRa wireless communication technology according to a certain protocol format. Centralized terminal.

The environmental data centralization and transmission part is composed of data centralization terminals and routers. The data concentrator is used to receive the data collected by all wireless environmental monitoring nodes scattered in the building, and the router is used for network interconnection. After receiving the data transmitted by each wireless environmental monitoring node, the data concentrator centralizes and processes the data again, processes the data into JSON format, and relies on the router side, and the router uploads the data to the cloud server.

The data storage part is mainly a cloud server, and the cloud server deploys a MySQL database, which is responsible for the storage of various data such as environmental data, user data, and device data.

The environmental display part is composed of the display screen inside the building, the smart terminal on the mobile terminal and the web page on the PC end. The display screen obtains environmental data from the data concentrator for local environmental monitoring in the building. Obtain data for remote monitoring. Thus, the environmental monitoring node monitors the environmental information and sends it to the data concentrator. After receiving the data from the environmental monitoring node, the data concentrator sends the data to the display on the one hand for local environmental monitoring, and uploads the data to the cloud on the other hand. The server uses mobile smart terminal software and web pages to realize remote monitoring by obtaining server data.

Description of drawings

Fig. 1 is the overall structural block diagram of this invention;

Fig. 2 is a system data concentrator architecture diagram;

Fig. 3 is the framework diagram of environmental monitoring node;

Figure 4 is a system server architecture diagram;

Figure 5 is the electrical connection diagram of the LoRa wireless communication module of the system.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings in the embodiments of the present invention. However, it should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Figure 1 is a block diagram of the instruction manual, which is the architecture diagram of the entire system. The system can be divided into two parts, the upper computer and the lower computer. The lower computer is composed of an environmental monitoring node, a data concentrator, a display screen, and a router. The environmental monitoring nodes are distributed at various points inside the building to monitor environmental data, and transmit the monitored environmental data to the data concentrator through LoRa wireless communication technology. It is transmitted to the display to realize local environment monitoring. On the one hand, the data is transmitted to the router through WiFi wireless communication technology, and the router uploads the data to the cloud server. The upper computer is composed of cloud server, webpage and mobile intelligent terminal software. The cloud server receives the environmental data uploaded by the lower computer and stores them in the database. The webpage is mainly used for PC monitoring, and the webpage establishes data with the cloud server through HTTP protocol and Socket. The channel realizes the interaction of data, and then realizes the remote monitoring of the environment. The mobile intelligent terminal software is mainly used for the environmental monitoring of the mobile terminal. The mobile intelligent terminal software establishes a data channel with the cloud server through the HTTP protocol and Socket to realize the data interaction and realize the environmental information. remote monitoring.

Fig. 2 is a structure diagram of a data concentrator. The data concentrator is mainly composed of a storage module composed of an STM32 processor, EEPROM and Flash, a LoRa wireless communication module, a WiFi wireless communication module, and a USB power interface circuit module. The STM32 processor is the data core processing unit, which is responsible for processing and calculating various data, analyzing various control instructions and executing corresponding instructions. EEPROM and Flash form a storage module, which stores information and data such as user WiFi accounts and passwords, so that they will not be lost when power is turned off. The LoRa wireless communication module is used to receive data from environmental monitoring nodes. The WiFi wireless communication module is used to realize information interaction with the router. The USB power interface circuit module adopts USB power supply to provide normal working voltage for each module and circuit.

Fig. 3 is a structural diagram of an environmental monitoring node, which is mainly composed of various sensor modules, LoRa communication modules, power supply modules and STM32 processors. Various sensor modules are used to monitor the corresponding environmental data, and transmit the monitored environmental data to the processor, which performs centralized calculation and processing of the data. The LoRa communication module is used to realize data interaction with the data concentrator, and the power module provides normal working voltage for the environmental monitoring nodes.

FIG. 4 is a program architecture diagram of the system server, and the cloud server can be divided into a processing layer and a port layer. The processing layer relies on the MySQL database and is responsible for real-time message data analysis, data arithmetic processing, variable logic transformation, data reading and writing and storage. The port layer realizes data information interaction with the embedded terminal, mobile intelligent terminal software, and web pages. The data interaction between the server and the embedded terminal is realized by the MQTT protocol. The data interaction between the server and the mobile intelligent terminal software is realized based on the HTTP protocol and the Socket protocol.

Figure 5 is a schematic diagram of the electrical connection between the LoRa communication module and the STM32 microcontroller. The M1 and M2 pins determine the working mode of the LoRa communication module. Serial communication is used to realize the data interaction between the LoRa module and the STM32 microcontroller processor.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1. a kind of heavy construction environmental monitoring system based on LoRa, acquisition, transmission and visualization including environmental data are aobvious Show, it is characterised in that:

A. mobile intelligent terminal software, the mobile intelligent terminal software with monitoring system matches are long-range for mobile intelligent terminal Monitoring；

B. webpage is managed with the matched webpage of this Intelligent housing for remote system control；

C. cloud server stores for data and carries out data interaction with webpage, mobile intelligent terminal software；

D. environment monitoring node is distributed environment monitoring node, is carried out using LoRa wireless communication technique and data concentrator Data interaction is monitored for domestic environment；

E. display screen, the information inspection end that system is located locally are counted with data concentrator by LoRa wireless communication technique According to interaction；

F. data concentrator is located at indoor data and transmits core, is responsible for environmental data collection, forwarding and upload；

G. router realizes network share.

2. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the ring Data interaction between border monitoring node, display screen and data concentrator is all made of LoRa wireless communication technique.

3. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the ring It is carried out in data set by the way of poll between border monitoring node and data concentrator.

4. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the number Router is connected by Wi-Fi according to concentrator, uploaded using internet realization data and is stored in cloud server.

5. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the number The upload of environmental data is carried out using MQTT agreement and JSON data format according to concentrator.

6. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the clothes Business device disposes MySQL database, for the storage of the Various types of data such as user information, environmental data, and can be carried out real-time packet number According to parsing, the data processing works such as parameter calculation process.

7. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the clothes Business device and webpage, mobile intelligent terminal software are based on the both-way communication for realizing data between http protocol and Socket agreement part.

8. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that page end It is able to achieve the environmental data real-time display in current building with mobile intelligent terminal software, and page end was able to achieve in 24 hours Environmental data change display.

9. a kind of according to claim 1, heavy construction environmental monitoring system based on LoRa, which is characterized in that the ring Border monitoring data specifically include temperature and humidity, formaldehyde, light intensity, CO, PM1.0, PM2.5, PM10, air quality monitoring.