CN109089237A - A kind of building environmental monitoring system based on LoRa wireless sensor network - Google Patents
A kind of building environmental monitoring system based on LoRa wireless sensor network Download PDFInfo
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- CN109089237A CN109089237A CN201811182297.2A CN201811182297A CN109089237A CN 109089237 A CN109089237 A CN 109089237A CN 201811182297 A CN201811182297 A CN 201811182297A CN 109089237 A CN109089237 A CN 109089237A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of building environmental monitoring systems based on LoRa wireless sensor network, including center convergence node, monitoring computer and N number of wireless sensor measuring node, N >=10, N number of wireless sensor measuring node is connected by LoRa wireless network with center convergence node, and center convergence node is connected by USART serial ports with monitoring computer.Corresponding ambient parameter information is acquired by wireless sensor measuring node first, then pass through LoRa wireless network, the data that each node collects are transferred to center convergence node, measurement data is finally transferred to monitoring computer with USART serial ports by center convergence node.The metrical information that the present invention collects can be subsequently used for the intelligent control of the air-conditioning system realized in building, humidity controlling system, lighting system, dust pelletizing system etc., optimize the operation of these energy consumption equipments, energy utilization rate is improved, there is certain meaning to energy-saving and emission-reduction.
Description
Technical field
The invention belongs to environmental quality monitoring field, especially a kind of building environment based on LoRa wireless sensor network
Monitoring system.
Background technique
Building environment is an important component of people's livelihood.With the quick raising of living standard, people are to residence
Firmly the demand of environmental degree of comfort, safety and energy conservation and environmental protection etc. is more more and more urgent.To building environmental quality indices
Control realizes the safe early warnings such as fire and building structure and provides support for building energy saving synergy, all be unable to do without compacting first
Environmental data basis.By taking energy consumption of building manages as an example, a kind of distributed energy consumption of height is presented in current various building construction environment
State has huge energy-saving potential.According to statistics, for office building and large public building, less cost is paid
To obtain the energy-saving effect for being more than 20%.Therefore, a kind of acquisition Environment Inside the Building parameter information, including temperature in real time is researched and developed
The building environmental monitoring system of degree, humidity, illuminance, dust concentration etc. has centainly subsequent propulsion building effectively energy conservation
Meaning.
At this stage, more and more environmental monitoring systems are acquired using digital automatization, and use various communication modes
Complete the deployment of monitoring node:
1. conventional wired networks realize the transmission of monitoring data using telephone network existing in building, computer network etc..
Partial wideband is used to realize timing meter reading and data if the water, electricity and gas automatic meter reading system of Chongqing Hua Weiwo electricity scientific & technical corporation
Centralized management.
2. various bussing techniques, including various industrial CAN, Modbus, Profibus buses and aim at building automatic
Lonworks bus of design etc..Bussing technique has been obtained for wide application in building automatic field, such as grinds magnificent public affairs
The BEMS building energy management system of department is exactly the acquisition for using field bus technique to realize data, and real using Modbus bus
Existing automation control.
But the environmental monitoring system of wired communication mode, it has the following problems:
1. project amount is big, design cost is high: the wiring of newly-built building needs just to consider the problems of at the beginning of design wiring, also
The wiring that monitoring network and home network must be comprehensively considered increases the design cost of building.
2. wiring is cumbersome, influences beauty: existing building are routed with the wiring that need to comprehensively consider the cable network that oneself has
Otherwise pattern can damage its surface structure, influence beauty.
3. the operation of cable network is with maintenance cost height: the system operation cost connected using cable network will be with building
It monitors the increase of area and constantly rises.Again due to Wireline be usually easier after a period of time has passed it is affected by environment
And aging or baited by rodent or other animals and damaged, increase the maintenance cost of system.
4. some monitoring applications are not suitable for disposing wireline cable, such as to the monitoring application of Historical Buildings, cable is deployed to
This too big application and provisional monitoring application etc..
Summary of the invention
The purpose of the present invention is to provide a kind of building environmental monitoring systems based on LoRa wireless sensor network, to adopt
Collect precise circumstances information everywhere in building, solves and be routed cumbersome, operation present in traditional cable environment monitoring system
The problems such as high with maintenance cost.
The technical solution for realizing the aim of the invention is as follows: a kind of building environment prison based on LoRa wireless sensor network
Examining system, including center convergence node, monitoring computer and N number of wireless sensor measuring node, N >=10, N number of wireless sensor
Measuring node is connected by LoRa wireless network with center convergence node, and center convergence node is in terms of USART serial ports and monitoring
Calculation machine is connected.Wherein:
The wireless sensor measuring node, for acquiring the ambient parameter information in building everywhere in real time, and will measurement
Data are transmitted to center convergence node by LoRa wireless module；
The center convergence node, for receiving the number for being dispersed in wireless sensor measuring node acquisition all in building
According to, and data are transferred to monitoring computer by USART serial ports；
The monitoring computer, for handle the ambient parameter information received and by result in the form of tables of data tissue
It is stored in MySQL database；Meanwhile also built on monitoring computer friendly interface host computer monitoring of software and
Apache web site, operation maintenance personnel directly check the corresponding metrical information of each node on host computer monitoring of software, or logical
The Apache web site on mobile phone browser remote access monitoring computer is crossed, relevant metrical information is inquired.The present invention with
The prior art is compared, remarkable advantage:
(1) networking flexibility, favorable expandability: forming network in a manner of wireless Ad Hoc between sensor node, and new node can be with
It is added at any time without being impacted to original network, there is preferable scalability, be easily installed and dispose.
(2) low-power consumption, low cost, easy to maintain: communication reduces the investment of wiring, reduces maintenance and maintenance
Difficulty, while the establishment of Information Acquisition System being made not need additional hardware investment the characteristics of self-organizing, reduced costs.
LoRa Radio Transmission Technology more system is run for a long time saves cost.
(3) fault-tolerant ability is strong: the monitoring system has stronger fault-tolerant ability, can also be mentioned by technologies such as information fusions
The precision of high monitoring data.
Detailed description of the invention
Fig. 1 is the structural block diagram of building environmental monitoring system
Fig. 2 is the structural block diagram of wireless sensor measuring node
Fig. 3 is the flow chart of web site
Fig. 4 is the flow chart of host computer monitoring of software
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
In conjunction with Fig. 1, a kind of building environmental monitoring system based on LoRa wireless sensor network, including center convergence section
Point, monitoring computer and N number of wireless sensor measuring node, N >=10, N number of wireless sensor measuring node are wireless by LoRa
Network is connected with center convergence node, and center convergence node is connected with USART serial ports with monitoring computer.
The wireless sensor measuring node, for acquiring the ambient parameter information in building everywhere in real time, and will measurement
Data are transmitted to center convergence node by LoRa wireless module.
The center convergence node is dispersed in wireless sensor node all in building number collected for receiving
According to, and data are transferred to monitoring computer by USART serial ports.
The monitoring computer, for handle the ambient parameter information received and by result in the form of tables of data tissue
It is stored in MySQL database；Meanwhile also built on monitoring computer friendly interface host computer monitoring of software and
Apache web site, operation maintenance personnel directly check the corresponding metrical information of each node on host computer monitoring of software, or logical
The Apache web site on mobile phone browser remote access monitoring computer is crossed, relevant metrical information is inquired.
The course of work of building environmental monitoring system are as follows: wireless sensor measuring node acquires in building everywhere in real time first
Ambient parameter information, and measurement data is transmitted to center convergence node by LoRa wireless module.Then center convergence section
Point, which receives, is dispersed in wireless sensor measuring node data collected all in building, and data are passed through USART serial ports
It is transferred to monitoring computer.Last monitoring computer processing, storage and display measurement result.
In conjunction with Fig. 2, the wireless sensor measuring node includes Temperature Humidity Sensor, illuminance sensor, PM2.5 sensing
Device, microcontroller, LoRa wireless module and power management module；Temperature Humidity Sensor and illuminance sensor pass through I2C connects
Mouth is connected with microcontroller, and PM2.5 sensor and the general USART interface of LoRa wireless module are connected with microcontroller, electricity
Source control module respectively with Temperature Humidity Sensor, illuminance sensor, PM2.5 sensor, microcontroller, LoRa wireless module phase
Connection；Wherein:
The Temperature Humidity Sensor, temperature for collecting environment and relative humidity data, are obtained by calculation dew point temperature
Angle value.
The illuminance sensor, illuminance data for collecting environment.
The PM2.5 sensor, PM2.5 data for collecting environment.
The microcontroller, the sensor above-mentioned for timing controlled carry out the acquisition of corresponding information, and by the letter of acquisition
Breath is organized into the data frame of following format, which is sent to LoRa wireless module；
| Frame head 0x3C | Acquisition Node Ground It compiles location Numbers (two A word Section) | Transmission Channel It is number (single Byte) | Data Domain word Joint number (individual character Section) | Illumination Degree (four Byte) | Temperature (four words Section) | Relatively Humidity (four words Section) | Dew point Temperature (four words Section) | Particle Density (four words Section) | Verification It is (single Byte) | Postamble 0x0D |
The LoRa wireless module will in a manner of LoRa spread spectrum communication for receiving the data frame from microcontroller
Data frame transfer gives center convergence node.
The power management module, for Temperature Humidity Sensor, illuminance sensor, PM2.5 sensor, microcontroller
Electric energy is provided with LoRa wireless module.
The course of work of wireless sensor measuring node are as follows: the above-mentioned sensor of microcontroller timing controlled first carries out phase
Answer the acquisition of information.Wherein, the temperature and relative humidity data of Temperature Humidity Sensor acquisition environment, and dew point is obtained by calculation
Temperature value；The illuminance data of illuminance sensor acquisition environment；The PM2.5 data of PM2.5 sensor acquisition environment.Then micro-
The information collected is organized into the data frame of certain format by controller, which is sent to LoRa wireless module.Most
Whole LoRa wireless module receives the data frame from microcontroller, by data frame transfer to center in a manner of LoRa spread spectrum communication
Aggregation node.
The center convergence node is used to receive the number for being dispersed in wireless sensor measuring node acquisition all in building
According to, and data are transferred to monitoring computer by USART serial ports.
MySQL database, Apache web site and host computer monitoring of software have been built above the monitoring computer.
The MySQL database, the measurement number for each measurement point in the tissue in the form of tables of data and storage building
According to, while for Apache web site and the access of host computer monitoring of software to obtain the relevant information wherein saved.
The Apache web site, it is each in building for being shown in a manner of browser web page to mobile subscriber
The correlation measurement information of measurement point.
The host computer monitoring of software, for directly showing each measurement point in building to user in a manner of graphical interfaces
Correlation measurement information.
In conjunction with Fig. 3, the Apache web site, for showing building to mobile subscriber in a manner of browser web page
The correlation measurement information of each point in the world.
The course of work of Web site are as follows: user inputs account ID in web page first and password logs in.System meeting
The legitimacy for verifying account information in the database can prompt user to log in wrong if authentication error；If verifying is correct,
User can be prompted to log in success.When successful log, if it is administrator, then administrator's operation interface can be entered, at this
In interface, administrator can manage the information of all ordinary users, including addition, deletion, modification general user information；It can also be with
Input node number inquires the environment measurement data of the point；It can also exit and log in back to former log-in interface.When logging in success
When, if it is ordinary user, then normal user operation interface can be entered, in the interface.Ordinary user can be with input node
Number inquires the environment measurement data of the point；It can also exit and log in back to former log-in interface.
In conjunction with Fig. 4, the host computer monitoring of software is each in building for directly being shown to user in a manner of graphical interfaces
The related measurement data of point.
The workflow of host computer monitoring of software are as follows: first with the presence or absence of the corresponding MySQL of connection on inquiry monitoring computer
The odbc data source of database then creates odbc data source and connects the odbc data source if it does not exist.Then serial ports is configured
Parameter, including serial port, baud rate, data bit digit, stop position digit, verification type.Then serial ports is opened, centromere is received
The data that point transmission comes.It can check in each database there is which tables of data in the host computer monitoring of software, it can also be defeated
Enter querying condition and checks relevant metrical information.
Claims (4)
1. a kind of building environmental monitoring system based on LoRa wireless sensor network, it is characterised in that: including center convergence section
Point, monitoring computer and N number of wireless sensor measuring node, N >=10, N number of wireless sensor measuring node are wireless by LoRa
Network is connected with center convergence node, and center convergence node is connected with USART serial ports with monitoring computer.Wherein:
The wireless sensor measuring node, for acquiring the ambient parameter information in building everywhere in real time, and by measurement data
Center convergence node is transmitted to by LoRa wireless module；
The center convergence node, for receiving the data for being dispersed in wireless sensor measuring node acquisition all in building,
And data are transferred to monitoring computer by USART serial ports；
The monitoring computer, for handling the ambient parameter information received and by result, tissue is stored in the form of tables of data
In MySQL database；Meanwhile the host computer monitoring of software and Apache of friendly interface are also built on monitoring computer
Web site, operation maintenance personnel directly check the corresponding metrical information of each node on host computer monitoring of software, or clear by mobile phone
Device of looking at remotely accesses the Apache web site on monitoring computer, inquires relevant metrical information.
2. as described in claim 1 based on the building environmental monitoring system of LoRa wireless sensor network, it is characterised in that: institute
State wireless sensor measuring node include Temperature Humidity Sensor, illuminance sensor, PM2.5 sensor, microcontroller, LoRa without
Wire module and power management module；Temperature Humidity Sensor and illuminance sensor pass through I2C interface is connected with microcontroller,
PM2.5 sensor and the general USART interface of LoRa wireless module are connected with microcontroller, power management module respectively with it is warm and humid
Sensor, illuminance sensor, PM2.5 sensor, microcontroller, LoRa wireless module is spent to be connected；Wherein:
The Temperature Humidity Sensor, temperature for collecting environment and relative humidity data, are obtained by calculation dew point temperature value；
The illuminance sensor, illuminance data for collecting environment；
The PM2.5 sensor, PM2.5 data for collecting environment；
The microcontroller, the sensor above-mentioned for timing controlled carry out the acquisition of corresponding information, and by the information group of acquisition
It is made into the data frame of following format, which is sent to LoRa wireless module；
The LoRa wireless module, for receiving the data frame from microcontroller, by data in a manner of LoRa spread spectrum communication
Frame is transferred to center convergence node；
The power management module, for Temperature Humidity Sensor, illuminance sensor, PM2.5 sensor, microcontroller and
LoRa wireless module provides electric energy.
3. as described in claim 1 based on the building environmental monitoring system of LoRa wireless sensor network, it is characterised in that: institute
It states center convergence node and is dispersed in the data that all wireless sensor measuring node acquires in building for receiving, and by data
Monitoring computer is transferred to by USART serial ports.
4. as described in claim 1 based on the building environmental monitoring system of LoRa wireless sensor network, it is characterised in that: institute
It states and has built MySQL database, Apache web site and host computer monitoring of software on monitoring computer；Wherein:
The MySQL database, for the measurement data of each measurement point in the tissue in the form of tables of data and storage building, together
When for Apache web site and host computer monitoring of software access to obtain the relevant information wherein saved；
The Apache web site, for showing each measurement in building to mobile subscriber in a manner of browser web page
The correlation measurement information of point；
The host computer monitoring of software, for directly showing the phase of each measurement point in building to user in a manner of graphical interfaces
Close metrical information.
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Cited By (8)
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| CN110113438A (en) * | 2019-06-12 | 2019-08-09 | 西南科技大学 | A kind of heavy construction environmental monitoring system based on LoRa |
| CN110189493A (en) * | 2019-06-28 | 2019-08-30 | 南京丰厚电子有限公司 | A kind of EAS sound magnetic burglary-resisting system based on LoRa |
| CN111465036A (en) * | 2019-12-05 | 2020-07-28 | 浙江工业大学 | Fire-fighting data transmission method based on L oRa star network polling nested networking |
| CN111491303A (en) * | 2020-04-10 | 2020-08-04 | 许瑜超 | Building communication system based on L oRa-Mesh and building communication ad hoc network method |
| CN111561969A (en) * | 2020-05-29 | 2020-08-21 | 西安理工大学 | Integrated monitoring system of complicated target range environment based on loRa |
| CN112187766A (en) * | 2020-09-23 | 2021-01-05 | 北京时代凌宇信息技术有限公司 | Modbus protocol conversion terminal configuration method and Modbus protocol conversion terminal |
| CN114200075A (en) * | 2021-10-21 | 2022-03-18 | 北京中电飞华通信有限公司 | Building internal environment condition monitoring system |
| CN115046591A (en) * | 2022-06-27 | 2022-09-13 | 大连莱克科技发展有限公司 | Modularization distributing type temperature flow measuring device |
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