CN106643888A - 6LoWPAN based building environment monitoring system - Google Patents
6LoWPAN based building environment monitoring system Download PDFInfo
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- CN106643888A CN106643888A CN201611105594.8A CN201611105594A CN106643888A CN 106643888 A CN106643888 A CN 106643888A CN 201611105594 A CN201611105594 A CN 201611105594A CN 106643888 A CN106643888 A CN 106643888A
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- 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
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- 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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Abstract
A 6LoWPAN based building environment monitoring system comprises sensor nodes, a boundary routing node and a host computer monitoring center. The sensor nodes are arranged in each floor to monitor temperature, humidity and smoke information in the present environment in real time; each node collects on group of data including the temperature, humidity and smoke; due to the fact that environmental factors change slowly, the sensor nodes collect the data every 3 minutes, A/D conversion is carried out by microcontrollers in the sensor nods, and the data is sent to the boundary routing node; and the boundary routing node communicates with a monitoring host in the host computer monitoring center via the Ethernet, a 6LoWPAN data packet sent by the sensor nodes is converted into an IPv4 data packet, the IPv4 data packet is sent to a monitoring host, and interaction and remote access between the sensor nodes and the host computer monitoring center are realized. The 6LoWPAN based building environment monitoring system can monitor whether there are hidden safety hazards in a building conveniently, saves labor resources and improves the monitoring level.
Description
Technical field
The present invention relates to a kind of environmental monitoring system based on wireless sensor network, and in particular to based on 6LoWPAN's
Building environmental monitoring system.
Background technology
In the today's society of information technology fast development, intelligent building prison of the Automatic Measurement Technique in combination with information transfer
Examining system is applied to more and more in daily life.At present, most buildings are in the no portion simultaneously of construction period
Administration's security device, and later stage deployment causes cost intensive and disposes difficulty from wired mode, and easily body of wall is damaged.Should
The research contents of project utilizes wireless sensor network, can effectively reduce building and maintenance cost.
Traditional wireless communication mode such as WiFi, the bluetooth Shortcomings in terms of networking and power managed.Its network node
Quantity and transmission range is limited cannot carry out large scale deployment, and the higher service life of power consumption is short.Wireless sensor network has
Have low-power consumption, MANET, low cost, support multi-hop transmission, the features such as network capacity is big.It is wireless to pass and building space area is big
Sensor network can preferably meet its demand.
The wireless sensor network solution existing defects based on ZigBee technology commonly used at present.It is deposited with IP network
In isomery, it is impossible to which realization is accessed end to end, causes network stabilization poor.Simultaneously in China, ZigBee only supports that 2.4G communicates,
Penetration power is poor, because building body of wall is more, causes its information transfer stability to reduce.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide the building environment based on 6LoWPAN
Monitoring system, by each corner in building Sensor monitoring node is placed, by the environmental information of monitoring by 6LoWPAN without
Line communication mode is transferred to monitoring center, and monitoring center can obtain the environmental key-element information of each monitoring point, is easy to monitor building
Whether there is potential safety hazard in the world, save human resourcess, improve level monitoring.
To achieve these goals, the technical solution used in the present invention is：
Supervised based on the building environmental monitoring system of 6LoWPAN, including sensor node, border routing node and host computer
The part of measured center three；
Each sensor node is arranged in every floor, the temperature, humidity and smog information in real-time monitoring current environment；
Described sensor node is according to the building number of plies and the node of every layer of size deployment respective numbers；Each section
Point one group of data of collection, every group of data include temperature, humidity, smog；Because the change of each environmental key-element is slow, sensor node is adopted
Collection set of time is to gather 1 time per 3 minutes, and carries out A/D conversions by the microcontroller inside sensor node, finally by number
According to transmission to border routing node；
The monitoring main frame of border routing node and host computer monitoring center by ethernet communication, by by sensor node
The 6LoWPAN packets of transmission are converted into IPv4 packets, send to monitoring main frame, so as to realize sensor node and host computer
The interaction of monitoring center and remote access；
The hardware of described sensor node includes microcontroller, and four signal connection end mouths are provided with microcontroller,
Connect CC1120 radio-frequency modules, Temperature Humidity Sensor, Smoke Sensor and system debug interface respectively；
The hardware of described border routing node includes that microcontroller, as main control unit, is arranged on described microcontroller
There are four signal connection end mouths, CC1120 radio-frequency modules, system debug interface, clock module and ethernet communication are connected respectively and is connect
Mouthful；
Each sensor node constitutes sensor network, and described sensor network is using 6LoWPAN as Networking protocol.
The microcontroller of described sensor node is TM4C123GXL.
The microcontroller of described border routing node is TM4C1294XL.
Beneficial effects of the present invention：
Building environmental monitoring system based on 6LoWPAN according to the present invention, it is fully functional and being capable of steady operation；Can
Node communication frequency is effectively reduced, the working time of radio-frequency module is reduced, so as to play a part of to reduce node power consumption, with group
Net convenience, easy care, low cost, stable and long-range monitoring and other advantages, can effectively realize the monitoring to building environment,
With higher using value and promotional value.
And 6LoWPAN communication technologys are adopted as the solution of wireless sensor network, can using its IPv6 characteristic
Easily realize the communication between sensor network and Internet network；It is easy to system maintenance, while it supports that Sub-1GHz leads to
Letter, with stronger penetration power, improves the stability of system communication.
Description of the drawings
Fig. 1 is present system structured flowchart.
Fig. 2 is inventive sensor node hardware structure figure.
Fig. 3 is border routing node hardware of the present invention composition figure.
Fig. 4 is host computer theory diagram of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, according to the building number of plies and the sensor node of every layer of size deployment respective numbers, each section
Point one group of data of collection, every group of data include temperature, humidity, smog etc.；Because each environmental key-element changes slow, therefore sensor
Node acquisition time is set to be gathered 1 time per 3 minutes, and by data publication to border routing node, Jing Ethernets reach MQTT
Server, the message that server is subscribed to according to host computer (MQTT clients), pushes data into host computer；
Border routing node as data transfer between sensor network and user bridge, by by sensor node send out
The IPV6 packets for sending are converted into IPv4 packets, and Jing Ethernets are sent to MQTT servers；Host computer monitoring center be used for
MQTT servers subscribe to message to obtain sensor node data and show, for abnormal data alarm signal is sent, and preserve
The data of collection.
As shown in Fig. 2 sensor node uses TM4C123GXL (MCU) as controller, CC1120 is used as radio-frequency module.
MCU initializes CC1120 radio-frequency modules to select the working method of sensor node and match mailing address.When sensor section
Point receives the instruction of boundary node transmission, and MCU is arrived the data publication that sensor node is collected by CC1120 radio-frequency modules
Boundary node；
As shown in figure 3, border routing node is used as data sampling sensor network and the bridge of extraneous network data exchange,
Require in terms of memory capacity and computing capability higher.System selects the TM4C1294XL microcontrollers of TI companies as master control
Unit, compared with TM4C123GXL, it is supported ethernet communication, possesses bigger Flash and RAM, can store more
Nodal information and more powerful operational capability.Its hardware composition increased clock module and Ethernet compared with sensor node
Communication interface, guarantees the time synchronized of all nodes in whole data collecting system by clock module, and Ethernet interface
Then realize the data interaction between sensor network and host computer.
The sensor network of system can be relatively easy to realize to sensing data using 6LoWPAN as Networking protocol
Upload, reduce development difficulty, reduce system complexity.Sensor node selects MQTT as application layer host-host protocol, the association
With publish/subscribe as model, sensor node is gathered sensing data and is sent to MQTT generations view by way of clocked flip
Reason server.By proxy server again by data-pushing to user, without the need for the direct access sensors network of user, so as to reduce
The communications burden of sensor network.
The operation principle of the present invention：
Sensor node adopts modularized design, and whole flow process is divided into system initialization, sensor data acquisition, process with
And issue data；Initialization program includes that peripheral hardware is initialized and netinit, while starting intervalometer, is touched by intervalometer
Send out sensor node and gather the data of each sensor, and carry out data packing being sent to generation by MQTT agreements after A/D conversions
Reason server carries out data processing；Sensor node is connected first by host computer IP address and MQTT fixing ends slogan 1883
To the MQTT proxy servers being deployed on host computer；Then theme (topic) information is registered, the subject information in system is
Sensor node is numbered.Sensing data is sent to proxy server after the completion of registration issues data, be then turned off having connected
Into data is activation.
Border routing node initializing process is basically identical with sensor node；After the completion of initialization, message to be received is waited.
After the information of sensor node issue is received, NAT64 the and DNS64 technologies using Contiki systems will be received
Information is converted to corresponding IPv4 packets according to DNS request, is then sent to host computer by ethernet interface, completes
Data acquisition to sensor network.Simultaneously when host computer sends to sensor node asks, border routing node is by data
Bag is converted to IPv6 forms and retransmits to respective sensor node.
As shown in Figure 4：Host computer is the main tool that user monitors greenhouse, is designed using three-tier architecture, i.e. business
Logical layer, alternation of bed and accumulation layer.Wherein Business Logic is responsible for communication, calculates and store to processing data.Interaction
Layer is used for interacting between system and user.Accumulation layer selects the storage of ACCESS database realizing data, so as to historical query
And data analysiss.Concrete composition block diagram is as shown in Figure 4.Due to sensor network using MQTT as application layer host-host protocol,
Host computer needs to realize the data interaction between user and sensor network by proxy server.System is selected and increased income message generation
Proxy servers of the reason software Mosquitto as MQTT.Host computer monitoring system start after according to sensor node number to
Proxy server sends subscription information, so as to complete to subscribe to function, when proxy server receives the number of sensor node issue
Again by data-pushing to host computer monitoring system according to after.
Claims (3)
1. based on 6LoWPAN building environmental monitoring system, it is characterised in that including sensor node, border routing node with
And the part of host computer monitoring center three；
Each sensor node is arranged in every floor, the temperature, humidity and smog information in real-time monitoring current environment；
Described sensor node is according to the building number of plies and the node of every layer of size deployment respective numbers；Each node is adopted
Collect one group of data, every group of data include temperature, humidity, smog；Due to the change of each environmental key-element slowly, when sensor node is gathered
Between be set to be gathered 1 time per 3 minutes, and A/D conversions are carried out by the microcontroller inside sensor node, finally data are sent out
Deliver to border routing node；
Border routing node passes through ethernet communication with the monitoring main frame of host computer monitoring center, by the way that sensor node is sent
6LoWPAN packets be converted into IPv4 packets, send to monitoring main frame, so as to realize that sensor node and host computer are monitored
The interaction at center and remote access；
The hardware of described sensor node includes microcontroller, and four signal connection end mouths are provided with microcontroller, respectively
Connection CC1120 radio-frequency modules, Temperature Humidity Sensor, Smoke Sensor and system debug interface；
The hardware of described border routing node includes that microcontroller, as main control unit, on described microcontroller four is provided with
Individual signal connection end mouth, connects respectively CC1120 radio-frequency modules, system debug interface, clock module and ethernet interface；
Each sensor node constitutes sensor network, and described sensor network is using 6LoWPAN as Networking protocol.
2. the building environmental monitoring system based on 6LoWPAN according to claim 1, it is characterised in that described sensing
The microcontroller of device node is TM4C123GXL.
3. the building environmental monitoring system based on 6LoWPAN, it is characterised in that the microcontroller of described border routing node is
TM4C1294XL。
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| CN201611105594.8A CN106643888A (en) | 2016-12-05 | 2016-12-05 | 6LoWPAN based building environment monitoring system |
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| CN201611105594.8A CN106643888A (en) | 2016-12-05 | 2016-12-05 | 6LoWPAN based building environment monitoring system |
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Cited By (8)
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| CN107295108A (en) * | 2017-08-14 | 2017-10-24 | 安徽简道科技有限公司 | The network communication method of automatic building control system |
| CN107613017A (en) * | 2017-10-13 | 2018-01-19 | 天津科技大学 | Dangerous matter sources monitoring system and its implementation based on Internet of Things |
| CN107948332A (en) * | 2018-01-05 | 2018-04-20 | 南通大学 | A kind of agriculture Internet of things system and control method based on IPv6 |
| CN108565756A (en) * | 2018-04-20 | 2018-09-21 | 苏州中康电力开发有限公司 | Intelligent Prefabricated Cubical Substation group network system |
| CN108873831A (en) * | 2018-06-01 | 2018-11-23 | 南京理工大学 | A kind of universal multi-channel workshop data acquisition method |
| CN108900988A (en) * | 2018-06-06 | 2018-11-27 | 天津大学 | A kind of indoor electronic instrument temperature monitoring method based on 6LoWPAN |
| CN111208269A (en) * | 2020-03-04 | 2020-05-29 | 中国海洋大学 | Low-cost offshore culture water quality monitoring system and method |
| US11336730B1 (en) * | 2020-11-13 | 2022-05-17 | Zhejiang Gongshang University | MQTT-based distribution internet of things system and method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107295108A (en) * | 2017-08-14 | 2017-10-24 | 安徽简道科技有限公司 | The network communication method of automatic building control system |
| CN107613017A (en) * | 2017-10-13 | 2018-01-19 | 天津科技大学 | Dangerous matter sources monitoring system and its implementation based on Internet of Things |
| CN107948332A (en) * | 2018-01-05 | 2018-04-20 | 南通大学 | A kind of agriculture Internet of things system and control method based on IPv6 |
| CN108565756A (en) * | 2018-04-20 | 2018-09-21 | 苏州中康电力开发有限公司 | Intelligent Prefabricated Cubical Substation group network system |
| CN108873831A (en) * | 2018-06-01 | 2018-11-23 | 南京理工大学 | A kind of universal multi-channel workshop data acquisition method |
| CN108900988A (en) * | 2018-06-06 | 2018-11-27 | 天津大学 | A kind of indoor electronic instrument temperature monitoring method based on 6LoWPAN |
| CN111208269A (en) * | 2020-03-04 | 2020-05-29 | 中国海洋大学 | Low-cost offshore culture water quality monitoring system and method |
| US11336730B1 (en) * | 2020-11-13 | 2022-05-17 | Zhejiang Gongshang University | MQTT-based distribution internet of things system and method thereof |
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Application publication date: 20170510 |