CN203894936U - Wireless sensor network node - Google Patents
Wireless sensor network node Download PDFInfo
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- CN203894936U CN203894936U CN201420311554.9U CN201420311554U CN203894936U CN 203894936 U CN203894936 U CN 203894936U CN 201420311554 U CN201420311554 U CN 201420311554U CN 203894936 U CN203894936 U CN 203894936U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a wireless sensor network node. The wireless sensor network node comprises a receiving and transmitting module, a control module, a sensing module and a power management module, wherein the receiving and transmitting module is used for communication by adopting a 2.45GHZ microwave frequency band and reading an electronic label; the control module is used for simultaneously fusing information data of the receiving and transmitting module and the sensing module and realizing low-speed wireless transmission based on standards of wireless communication at a 2.4GHz frequency band; the sensing module is used for acquiring environmental information data; the power management module is used for controlling power supply of each module. Due to the design of the WSN (Wireless Sensor Network) node fused with an RFID (Radio Frequency Identification Device), not only can objects be identified, but also the environmental information of the objects can be acquired, so the function of reading and writing an ISO 18000-4 protocol RFID label at the 2.45G microwave frequency band is increased, meanwhile, the wireless sensor network node is compatible to temperature and humidity acquisition, the disadvantage that an existing WSN node has single function and is small in application range is overcome, and the wireless sensor network node has the advantages of low power consumption and less use of resources.
Description
Technical field
The utility model relates to Internet of things system, relates in particular to a kind of wireless sensor network node.
Background technology
Wireless sensor network WSN (Wireless Sensor Networks) technological incorporation the communication technology, sensor technology and computer networking technology, be the hot topic research of multidisciplinary intersection.As 21 century one of most important technology, start from the earliest eighties of last century seventies, used on Vietnam battlefield by U.S. army at first.From the eighties in last century, U.S. Department of Defense successively drops into substantial contribution for the research to " over the horizon " battlefield monitoring Sensor, and main achievement has distributed sensor system, naval's Cooperative Engagement Capability system and the long-range battlefield sensor-based system of U.S. army.The formal mark rising of wireless sensor network technology is one of the technology of 21 tool potentiality and influence power of being classified as by the famous business-to business magazines (b to b) Business Week in the whole world in 1999.The multihop self-organizing network system that wireless sensor network is formed by a large amount of low cost sensor nodes of disposing in monitored area, collaborative work between node, thus realize the transmission of perception, data acquisition and the information of external environmental information.
Wireless radio frequency discrimination RFID (Radio Frequency Identification) technology utilizes radiofrequency signal Space Coupling to propagate, realize non contact transmission and the identification of information, it is be exceedingly fast efficiency high automatic identification and information acquiring technology of a kind of speed.In World War II, militarily, along with the fast development of semiconductor technology, chip does less and less thereafter for use the earliest, and from strength to strength, RFID technology is also developed rapidly function.Along with the continuous propelling of informationized society, the range of application of RFID technology is also more and more wider, from warehousing management to retail, logistics and supply chain management, manages automatic management etc. from airdrome luggage, the various aspects that have been penetrated into our life, contact more and more tightr with our life.
Current, these two kinds of technology are all to explore forward along technology path separately, and both fusions are used and are seldom taken into account.But from the angle of Communication Development, the communication system that RFID and WSN form, all has its weak point separately, has limited its application scope.Wireless sensor network does not generally adopt overall identification to the node in network, and RFID identifies node but transmission range restriction is obvious, and therefore, it is inevitable that combining RFID and WSN have had opportunity to become simultaneously.
WSN sensing node is realized networking based on distributed networking protocol, has data redundancy and mass flow discrepancy weighing apparatus between node, and requirement simultaneously can adjust to adapt to external change automatically.Therefore network system complexity needs greater energy consumption to maintain the existence of network.
In the middle of the practical application of RFID, the label being attached on article just identifies article or has stored a small amount of essential information, and system is difficult to understand the information change between itself and environment by label, and has himself transmission range restriction.The advantage of WSN perception external information and networking exactly can make up it and supply, and certainly can improve its range of application, strengthen its function.
Utility model content
The utility model, in order to solve technical matters related in background technology, provides a kind of wireless sensor network node.
The technical solution of the utility model is: a kind of wireless sensor network node, comprise transceiver module, control module, sensing module and power management module, and described transceiver module adopts 2.45GHz microwave frequency band to carry out communication reading electronic labels; The wireless communication standard of described control module based on 2.4GHz frequency range is simultaneously for merging the information data of transceiver module and sensing module and realizing low rate wireless transmission; Described sensing module is used for gathering environmental information data; Described power management module is for carrying out power supply control to modules.
Preferred as one, described transceiver module is carried out ISO 18000-4 agreement.
Preferred as one, described transceiver module is also provided with the first dual-mode antenna, and described control module is provided with the second dual-mode antenna.
Preferred as one, described sensing module comprises temperature sensor and humidity sensor.
Preferred as one, described sensing module also comprises that analog-to-digital conversion module is digital signal for the analog-signal transitions that sensor is collected.
In sum, the utlity model has following advantage:
The WSN design of node of combining RFID, the environmental information that not only can also obtain article the identify objects while is also the environmental information of article, in storage monitoring management, kills two birds with one stone.With respect to the monitoring management of artificial storage, dispose this node, will obviously promote the efficiency of management, reduce handling cost simultaneously.Increased and supported the read-write capability to ISO18000-4 agreement RFID label under 2.45G microwave frequency band, compatible humiture information acquisition simultaneously, has improved the little shortcoming of the single scope of application of existing WSN nodal function, has low-power consumption and takies the advantage that resource is few.
Brief description of the drawings
Fig. 1 is the hardware circuit block diagram of the present embodiment;
Fig. 2 is the transceiver module circuit theory diagrams of the present embodiment;
Fig. 3 is the outside drawing of first dual-mode antenna of the present embodiment;
Fig. 4 is the control module circuit theory diagrams of the present embodiment;
Fig. 5 is the outside drawing of second dual-mode antenna of the present embodiment;
Fig. 6 is the temperature sensor circuit schematic diagram of the present embodiment;
Fig. 7 is the circuit theory diagrams of the power management module of the present embodiment;
Fig. 8 is LDO schematic diagram in the power management module of the present embodiment.
Embodiment
Below in conjunction with accompanying drawing, with embodiment, the utility model is described in further detail.
As shown in Fig. 1-8, a kind of wireless sensor network node, comprises transceiver module, control module, sensing module and power management module, and described transceiver module adopts 2.45GHz microwave frequency band to carry out communication reading electronic labels; The wireless communication standard of described control module based on 2.4GHz frequency range is simultaneously for merging the information data of transceiver module and sensing module and realizing low rate wireless transmission; Described sensing module is used for gathering environmental information data; Described power management module is for carrying out power supply control to modules.Described transceiver module is carried out ISO 18000-4 agreement.Described transceiver module is also connected with the first dual-mode antenna, and described control module is connected with the second dual-mode antenna.Described sensing module comprises temperature sensor and humidity sensor.
Described sensing module also comprises that analog-to-digital conversion module is digital signal for the analog-signal transitions that sensor is collected.
Microwave 2.45GHz frequency range transceiver module mainly contains antenna and radio frequency front end chip nRF24LE1 forms, nRF24LE1 driven antenna is also obtained the signal of tag reflection from antenna, through amplification filtering, AM demodulation, sends to control section by the Manchester's cde of label information after digital demodulation.The peripheral basic circuit design of nRF24LE1, as shown in Figure 2.
The first dual-mode antenna being connected with transceiver module adopts snakelike.Snakelike antenna is by antenna bending, makes it increase in the vertical direction current direction, can reduce like this electric current length of flow across.Snakelike antenna arrangement is at top layer.Its physical dimension as shown in Figure 3.
Control module comprises main control module and radio frequency submodule, mainly comprises CC2530 single-chip microcomputer, antennal interface, crystal oscillator and I/O expansion interface.Between 32 and 33 pins, connect 32K crystal oscillator, under park mode.Between 22 and 23 pins, connect 32M crystal oscillator, as system major clock.Between 25 and 26 pin, connect antenna-matching circuit.5,6 pins are connected with serial data pin with the clock input pin of SHT10 respectively, for obtaining of the control to sensor and heat transfer agent.16,17 pins respectively with the reception of the asynchronous serial data bus of 24LE1 with send pin and be connected, obtain the label information of reader for main control module part.The peripheral basic circuit of CC2530 designs as shown in Figure 4.
The second dual-mode antenna being connected with control module adopts inverted-F, and it is gained the name to exactly like alphabetical F.Reversed F-typed PCB antenna structure is simple, be easy to coupling.The profile of inverse-F antenna and size are as shown in little Fig. 5.
Temperature Humidity Sensor adopts SHT10 chip, and SHT10 chip has four pins, two power pins (SB_3V3, GND) and dual serial interface (P15_SHTSCK, P14_SHTDATA).The supply voltage of SHT10 is 2.4 ~ 5.5 volts, and the design adopts 3.3 volts of power supplies.After sensor powers on, wait for that 11ms is to cross " dormancy " state.3 pin are serial clock input, synchronous for the communication between single-chip microcomputer and sensor chip.2 pin are data line, for the data transmission of control module.Its circuit design as shown in Figure 6.
Due to the WSN node limited energy of combining RFID, so low-power consumption requirement is very high.When power management module powers to each functional module, transceiver module uses 3.3V power supply; Control module work input voltage requires as 3.3V, and wound is 3.3V by module operating voltage.Its circuit design as shown in Figure 7.Fig. 8 shows the circuit design drawing of power management module mesolow difference linear constant voltage regulator.
More than explanation is only to explanation of the present utility model, make those of ordinary skill in the art's can completely implement this programme, but be not to restriction of the present utility model, those skilled in the art are reading after this instructions and can make to the present embodiment the amendment that there is no creative contribution as required, and these are all not creative amendments.But as long as within the scope of claim of the present utility model, be all subject to the protection of Patent Law.
Claims (5)
1. a wireless sensor network node, is characterized in that: comprise transceiver module, control module, sensing module and power management module, described transceiver module adopts 2.45GHz microwave frequency band to carry out communication reading electronic labels; The wireless communication standard of described control module based on 2.4GHz frequency range is simultaneously for merging the information data of transceiver module and sensing module and realizing low rate wireless transmission; Described sensing module is used for gathering environmental information data; Described power management module is for carrying out power supply control to modules.
2. a kind of wireless sensor network node according to claim 1, is characterized in that: described transceiver module is carried out ISO 18000-4 agreement.
3. a kind of wireless sensor network node according to claim 1, is characterized in that: described transceiver module is also provided with the first dual-mode antenna, described control module is provided with the second dual-mode antenna.
4. a kind of wireless sensor network node according to claim 1, is characterized in that: described sensing module comprises temperature sensor and humidity sensor.
5. a kind of wireless sensor network node according to claim 1, is characterized in that: described sensing module also comprises that analog-to-digital conversion module is digital signal for the analog-signal transitions that sensor is collected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311554.9U CN203894936U (en) | 2014-06-12 | 2014-06-12 | Wireless sensor network node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311554.9U CN203894936U (en) | 2014-06-12 | 2014-06-12 | Wireless sensor network node |
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| CN203894936U true CN203894936U (en) | 2014-10-22 |
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| CN201420311554.9U Expired - Fee Related CN203894936U (en) | 2014-06-12 | 2014-06-12 | Wireless sensor network node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996278A (en) * | 2014-06-12 | 2014-08-20 | 中山达华智能科技股份有限公司 | Wireless sensor network node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996278A (en) * | 2014-06-12 | 2014-08-20 | 中山达华智能科技股份有限公司 | Wireless sensor network node |
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| 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: 20141022 Termination date: 20170612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |