CN202475776U - Wireless sensing node - Google Patents
Wireless sensing node Download PDFInfo
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- CN202475776U CN202475776U CN2012200968678U CN201220096867U CN202475776U CN 202475776 U CN202475776 U CN 202475776U CN 2012200968678 U CN2012200968678 U CN 2012200968678U CN 201220096867 U CN201220096867 U CN 201220096867U CN 202475776 U CN202475776 U CN 202475776U
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Abstract
The utility model discloses a wireless sensing node which is composed of a core plate and a sensor bottom plate. The wireless sensing node is characterized in that the core plate comprises a master controller and an RF (radio frequency) chip, wherein the master controller is connected with the RF chip; the master controller is connected with a peripheral circuit; the sensor bottom plate is composed of a power supply powering function module, a sensing data acquisition function module, a human-computer interaction function module and a communication function module; and the core plate is connected with the sensor bottom plate by a pin header. The wireless sensing node can be suitable for 6LowPAN and Zigbee, the application of introducing to an internet by a low-rate wireless local area network is enlarged, and implementation of a large-scale sensing control network is possible.
Description
Technical field
The utility model belongs to the Internet of Things field, particularly a kind of wireless sensing node that is applicable to 6LowPAN and Zigbee.
Background technology
Radio sensing network is used
Wireless sensor network (Wireless Sensor Networks, WSN) be current that receive much concern in the world, relate to that multidisciplinary height intersects, the integrated hot research field, forward position of knowledge height.Development of technology such as sensor technology, MEMS, modern network and radio communication have promoted the generation and the development of modern wireless sensor network.Wireless sensor network has been expanded people's information obtaining ability, and the physical message of objective world is linked together with the transmission network, in next generation network, will provide the most directly for people, the most effectively, the most real information.Wireless sensor network can obtain objective physical message, has very wide application prospect, can be applied to fields such as military and national defense, industrial or agricultural control, city management, biologic medical, environment measuring, rescue and relief work, deathtrap Long-distance Control.Cause the great attention of many national academias and industrial quarters, be considered to one of technology of power that 21 century had an immense impact on.
Wireless sensor network is exactly to form by being deployed in cheap microsensor nodes a large amount of in the monitored area; The network system of the self-organizing of a multi-hop that forms through communication; Its objective is in the perception of cooperation ground, collection and the processing network's coverage area by the information of perceptive object, and send to the observer.Transducer, perceptive object and observer have constituted three key elements of wireless sensor network.
Wireless sensor network (wireless sensor network) is called for short WSN, is a kind of network of being made up of the great quantity of small transducer.These Miniature Sensors generally are called sensor node (sensor node) or mote (dust).Generally also there is one or several base station (being called sink) to be used for concentrating the data of collecting in this kind network from Miniature Sensor.
Though the large-scale commercial applications of wireless sensor network is used; Because the restriction of aspects such as technology is still waiting time; But recent years, along with the decline that assesses the cost and microprocessor volume are more and more littler, wireless sensor network quite a lot begins to come into operation.
The Zigbee technology
The ZigBee technology be a kind of closely, low complex degree, low-power consumption, low rate, double-direction radio mechanics of communication cheaply.Be mainly used in the application of carrying out transfer of data between the various electronic equipments that distance is short, low in energy consumption and transmission rate is not high and periodic data, intermittent data and the transmission of low reaction time data typically being arranged.
Zigbee is a kind of highly reliable wireless data sending network, is similar to CDMA and GSM network.The Zigbee digital transmission module is similar to the mobile network base station.Communication distance from 75 meters of standard to hundreds of rice, several kilometers, and support infinite expanding.Zigbee be one by a wireless data sending network platform can how forming to 65000 wireless data transmission modules; In whole network range; Can intercom mutually between each Zigbee network digital transmission module, the distance between each network node can be from the 75m infinite expanding of standard.Different with the CDMA net of mobile communication or GSM net is that the Zigbee network mainly is to set up for industry spot automation control data transmission, thereby it must have simply, and is easy to use, reliable operation, the characteristics that price is low.And mobile radio communication mainly is to set up for voice communication, and each base station is worth generally all more than 1,000,000 yuans, and each Zigbee " base station " is less than 1000 yuans.Each Zigbee network node not only itself can be used as monitored object, and the transducer that for example it connected directly carries out data acquisition and monitoring, and other network node of transfer passes the data information of coming automatically.In addition, each Zigbee network node (FFD) also can be in the scope that own signal covers and a plurality of isolated child node (RFD) wireless connections of not bearing network information transfer task.
The 6LowPAN technology
6LowPAN (IPv6 over Low-power Wireless Personal Area Networks) utilizes IEEE 802.15.4 link to support IP-based communication, and it observes the interoperability of open standard and assurance and other IP devices simultaneously.
Internet of Things has caused since the global extensive concern that terminal quantity continues to rise, and becomes the market at over ten billion terminal gradually, has proposed the challenge of two aspects to network operation.At first be the sign indicating number addressing requirement, see that from international and domestic two aspects the IPv4 address shortage has become undisputable fact.On the one hand, by the end of in March, 2010, only remaining 22 of global assignable category-A IPv4 address fields estimate that the IPv4 address pool of the APNIC of Asia address administration branch in 2012 will exhaust, and domestic corporation can't apply for the IPv4 address more when the time comes; On the other hand, China's acquired IPv4 address share only accounts for 6.3% of the whole world, certainly will influence the development of the huge potential market of China.This shows that the address need of the Internet and mobile Internet still can not be satisfied in the IPv4 address, for developing Internet of Things, particularly have the identified problems of the sensing layer node of One's name is legion, this problem is more obvious.Secondly, Internet of Things business development problem also highlights appearance, and at present, the data format on the perception terminal is varied, is difficult to the unified management operation, and novel business is difficult to land.Because the network layer communication standard of lack of uniform, the exploitation of application program is in state without ready patterns to follow, and the internet, applications of extensively developing based on the ICP/IP protocol stack is not easy to transplant.Therefore; The agreement of the development need unified standard of Internet of Things comes supporting network to extensive ubiquitousization development; Also need the network foundation setting of a standard to hatch various novel business models, real realize " ubiquitous network, omnipotent business ".
The research emphasis of 6LowPan working group is technology such as adaptation layer, route, header-compressed, burst, IPv6, network insertion and network management, has proposed the adaptation layer technical draft at present. other technologies are also in discussion
6LowPan technology bottom adopts the PHY layer and the MAC layer of IEEE 802.15.4 regulation, and network layer adopts the IPv6 agreement.Because the loaded length that the long-range dried 6LowPan bottom of loaded length that MAC supports among the IPv6 can provide; In order to realize the seamless link of MAC layer and network layer; The suggestion of 6Low-Pan working group increases a network adaptation layer between network layer and MAC layer, be used for accomplishing work such as packet header compression, burst and reorganization and netted routing forwarding.
6LowPAN has following technical advantage:
(1) popularization: IP network is widely used, and as the IPv6 of Next Generation Internet core technology, is also quickening the paces that it is popularized, and in the LR-WPAN network, uses IPv6 to be easier to accepted.
(2) applicability: the IP network protocol stack architecture receives approval widely, and the LR-WPAN complete network can carry out simply based on this framework, exploitation effectively.
(3) more space, location: IPv6 to be applied to the maximum bright spot of LR-WPAN be exactly huge address space.This has exactly satisfied disposes needs extensive, the high density LR-WPAN network equipment.
(4) support the configuration of stateless automatic address: among the IPv6 when node starts.Can read MAC Address automatically, and configure required IPv6 address according to dependency rule.This characteristic is concerning sensor network, and is very attractive, because in most of the cases, can not be to the sensor node configuration user interfaces, and node must possess automatic configuration feature.
(5) be prone to insert: LR-WPAN uses the IPv6 technology, is easier to insert other network and Next Generation Internets based on the IP technology, and its technology that can make full use of IP network is developed.
(6) easy exploiting: at present based on many technology of IPv6 comparative maturity, and be widely accepted, these technology carried out suitable simplifying and accepting or rejecting, simplified the process of protocol development to the characteristic of LR-WPAN.
See that thus the IPv6 technology has the space of wide development in the online application of low rate wireless local, and low rate wireless local network accessing Internet will be expanded its application greatly, makes the realization of extensive sensing control network become possibility.
Summary of the invention
The purpose of the utility model is the limitation that solves existing WLAN, and a kind of wireless sensing node is provided, and is specially adapted to 6LowPAN and Zigbee.
The utility model purpose is achieved through following technical scheme:
A kind of wireless sensing node comprises core board and sensor base plate, and its said core board comprises main controller, RF chip, peripheral circuit, and RF chip, peripheral circuit are connected with main controller respectively; Said sensor base plate comprises power supply function of supplying power module, sensing data acquisition function module, human-computer interaction function module and communication function module, and said power supply function of supplying power module, sensing data acquisition function module, human-computer interaction function module, communication function module are connected with main controller respectively; Core board is connected with sensor base plate.
The form that this wireless sensing node adopts core board to separate with sensor base plate, core board are to be connected with sensor base plate through row's pin.Core board links to each other with sensor base plate for female mouthful through two 10 faller gills, and sensor base plate is core board power supply and data communication through row's pin; Make things convenient for the expansion and the transplanting of user function.
Said power supply function of supplying power module adopts the duplicate supply pattern, comprises battery powered mode, the DC5V dc power source adapter powering mode of two joint 1.5V batteries.
Said sensing data acquisition module comprises damp-warm syndrome transducer, light sensation transducer, 3-axis acceleration sensor, infrared receiving/transmission device, and said damp-warm syndrome transducer, light sensation transducer, 3-axis acceleration sensor, infrared receiving/transmission device are connected with main controller respectively.
Said human-computer interaction function module comprises five to button, display and UART communication interface, and said five are connected with display to button, and display is connected with main controller, and the UART communication interface is connected with main controller.Wherein five are used for wireless sensing node is directly disposed to button, and display is used for the explicit user key message, and the UART communication interface is the DB9 specification, is used for communicating by letter with host computer.
Said communication function module adopts serial mode or the SPI serial mode and the main controller communication of Transistor-Transistor Logic level/RS232 level.The serial mode of communication function module employing Transistor-Transistor Logic level/RS232 level and host computer or other main controllers communicate; The SPI serial ports is the programming/SPI communication interface with PIN10; Can be used for communicating by letter, cooperate with packet sniffer software and realize 802.15.4 data packet analysis appearance function with SPI.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Fig. 2 is the utility model bimodulus power supply power pack.
Fig. 3 is the interface sketch map of the utility model infrared receiving/transmission device and main controller.
Fig. 4 is the CC2530 circuit connection diagram.
Embodiment
As shown in Figure 1, this wireless sensing node is made up of core board 1 and base plate 2, and core board 1 comprises main controller 11, RF chip 12, peripheral circuit 13, and main controller 11 is connected with RF chip 12, and main controller 11 is connected with peripheral circuit 13; Said base plate 2 is made up of power supply function of supplying power module 21, sensing data acquisition function module 22, human-computer interaction function module 23 and communication function module 24; Core board 1 is connected with base plate 2 through two 10*2 row pins.
CC2530 is a on-chip system chip of using to IEEE 802.15.4, Zigbee, Zigbee RF4CE and intelligent energy; Owing to have high-capacity flash memory up to 256KB; CC2530 is fit to Zigbee pro and uses very much; Support is used for the novel RemoTI storehouse of Zigbee RF4CE, and this storehouse is that first item meets the storehouse of ZigBee RF4CE agreement in the industry, and has more jumbo internal memory will allow to download with reprogramming in the back-up system on the sheet in the air.In addition, CC2530 has also combined 1 fully-integrated high-performance radio-frequency transceiver, has 8051MCU, 8KB RAM, 32/64/128/256KB flash memory and other powerful support function and peripheral hardware.
The base plate 2 main functions that realize comprise power supply function of supplying power, sensing data acquisition function, human-computer interaction function and wire communication function.Be that base plate 2 specifically is made up of power supply function of supplying power module 21, sensing data acquisition function module 22, human-computer interaction function module 23 and communication function module 24.
As shown in Figure 2: power supply function of supplying power module 21 adopts the duplicate supply pattern, selects powering mode to select through wire jumper.The battery powered mode of two joint 1.5V batteries is to use two joint No.5 cells, and in an embodiment, boosting through the DSP60210 pressurizer is stabilized in 3.3V, generally is used for terminal node, and this kind pattern is installed easily, need not related electric wire.DC5V dc power source adapter powering mode is to adopt 5V power supply dc power source adapter, converts stable 3.3V voltage to through the AMS117 electric pressure converter and supplies base plate and core board to use, and this kind powering mode need generally to be used to the routing node of long-term work.
In the present embodiment, the damp-warm syndrome transducer adopts the transducer DHT11 with humiture one, in real time collecting temperature and humidity data; The light sensation transducer can move data by the collection site light sensation; The model of 3-axis acceleration sensor is MMA7455, can gather three-dimensional acceleration information, vibration data and freely falling body monitoring etc. in real time; The infrared receiving/transmission device can be realized the infrared remote controlled function.
This wireless sensing node has powerful human-computer interaction function; The user can dispose wireless sensing node to button, RS232 serial ports or SPI serial ports through five; And can carry out the demonstration of information through 12864LCD display, LED, wireless sensing node is controlled or by wireless sensing node control infrared receiving/transmission device through the infrared receiving/transmission device.Simultaneously, the user understands the residual state of current electric quantity for ease, also is provided with the electric quantity of power supply indicator light on the human-computer interaction function module.Fig. 3 is the five interface sketch mapes to button of man-machine interactive function module, and Fig. 4 is the CC2530 circuit connection diagram.
User's download is upgraded firmware and image data for ease, and the user can use the serial mode of Transistor-Transistor Logic level/RS232 level to communicate by letter with wireless sensing node, also can communicate by letter with wireless sensing node through the SPI serial mode.Its application implementation can be the collection and the datagram scanning of sensing data respectively.
Claims (6)
1. wireless sensing node; It is characterized in that comprising core board (1) and sensor base plate (2); Its said core board (1) comprises main controller (11), RF chip (12), peripheral circuit (13), and RF chip (12), peripheral circuit (13) are connected with main controller (11) respectively; Said sensor base plate (2) comprises power supply function of supplying power module (21), sensing data acquisition function module (22), human-computer interaction function module (23) and communication function module (24), and said power supply function of supplying power module (21), sensing data acquisition function module (22), human-computer interaction function module (23), communication function module (24) are connected with main controller (11) respectively; Core board (1) is connected with sensor base plate (2).
2. wireless sensing node according to claim 1 is characterized in that said core board (1) is to be connected with sensor base plate (2) through row's pin.
3. wireless sensing node according to claim 1 is characterized in that said power supply function of supplying power module (21) adopts the duplicate supply pattern, comprises battery powered mode, power supply adaptor powering mode.
4. wireless sensing node according to claim 1; It is characterized in that said sensing data acquisition function module (22) comprises damp-warm syndrome transducer, light sensation transducer, 3-axis acceleration sensor, infrared receiving/transmission device, said damp-warm syndrome transducer, light sensation transducer, 3-axis acceleration sensor, infrared receiving/transmission device are connected with main controller (11) respectively.
5. wireless sensing node according to claim 1; It is characterized in that said human-computer interaction function module (23) comprises five to button, display and UART communication interface; Said five are connected with display to button; Display is connected with main controller (11), and the UART communication interface is connected with main controller (11).
6. wireless sensing node according to claim 1 is characterized in that said communication function module (24) adopts serial mode or the SPI serial mode and main controller (11) communication of Transistor-Transistor Logic level/RS232 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200968678U CN202475776U (en) | 2012-03-15 | 2012-03-15 | Wireless sensing node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012200968678U CN202475776U (en) | 2012-03-15 | 2012-03-15 | Wireless sensing node |
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| CN202475776U true CN202475776U (en) | 2012-10-03 |
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| CN2012200968678U Expired - Fee Related CN202475776U (en) | 2012-03-15 | 2012-03-15 | Wireless sensing node |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102612171A (en) * | 2012-03-15 | 2012-07-25 | 广东工业大学 | Wireless sensing node |
| CN113383696A (en) * | 2021-07-05 | 2021-09-14 | 薄海洋 | Automatic irrigation and monitoring system of green house based on wireless network deployment |
-
2012
- 2012-03-15 CN CN2012200968678U patent/CN202475776U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102612171A (en) * | 2012-03-15 | 2012-07-25 | 广东工业大学 | Wireless sensing node |
| CN102612171B (en) * | 2012-03-15 | 2016-07-27 | 广东工业大学 | A kind of wireless sensing node |
| CN113383696A (en) * | 2021-07-05 | 2021-09-14 | 薄海洋 | Automatic irrigation and monitoring system of green house based on wireless network deployment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |