CN203733279U - Wireless sensor node device with improved power supply - Google Patents
Wireless sensor node device with improved power supply Download PDFInfo
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- CN203733279U CN203733279U CN201420012493.6U CN201420012493U CN203733279U CN 203733279 U CN203733279 U CN 203733279U CN 201420012493 U CN201420012493 U CN 201420012493U CN 203733279 U CN203733279 U CN 203733279U
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- Prior art keywords
- module
- sensor node
- power supply
- node device
- power
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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
Abstract
The utility model discloses a wireless sensor node device with an improved power supply, and belongs to the technical field of meteorological observation devices. The wireless sensor node device comprises a microprocessor module, a wireless communication module, an RS485 bus port module, a power module and at least one data acquisition module, wherein the data acquisition module is connected with the microprocessor module through the RS485 bus port module; the microprocessor module is connected with the wireless communication module; the power module supplies power for each component; the data acquisition module comprises a meteorological sensor; the power module comprises a charging port unit, a first voltage releasing unit, a charging management unit, an over-charge and over-discharge protection unit, and a lithium battery which are connected in sequence, wherein the lithium battery is also connected with a second voltage releasing unit and a boosting unit. According to the wireless sensor node device with the improved power supply, a power supply system of a sensor node is improved, the limitation on chips of different working voltages at the same level is take into full account, the structure of an original power circuit is improved, and therefore, the wireless sensor node device is simple in structure, high in reliability, and small in energy consumption.
Description
Technical field
The utility model belongs to meteorological observation device technique field, especially relates to the wireless sensor node device for meteorological observation a kind of applicable large scale deployment, that have wireless Ad Hoc ability.
Background technology
China is a country that meteorological disaster is more serious, therefore need good Meteorological Observation System, and the design of meteorological observation node is of crucial importance to Meteorological Observation System.The functions such as meteorological observation node mainly completes the input of a plurality of measurands, the processing of data, data storage, data transmission, current meteorological observation node is all by external power supply, to be connected with terminal with wired mode in automatic weather station mostly.But because automatic weather station cost is higher, volume is large, very flexible, and power consumption is large, strong to basic communications facility dependence, is being restricted on a large scale in application and deployment.
Be accompanied by the develop rapidly of MEMS (micro electro mechanical system) (MEMs), SOC (system on a chip) (soc), radio communication and low-power-consumption embedded technology, be pregnant with wireless sensor network (WSN), and a change that has brought information Perception with its low-power consumption, low cost, feature distributed and self-organization.Wireless sensor network is exactly to form by being deployed in cheap microsensor nodes a large amount of in monitored area, the multihop self-organizing network forming by communication.The multiplex powered battery of existing wireless sensor node, power supply mode is single, and the sustainable supply ability of energy causes the job stability of node not high; And because the required voltage of each device in node is not identical, also need to arrange dissimilar power supply, and circuit structure is complicated, and cost is higher.
Summary of the invention
For addressing the above problem, the utility model discloses a kind of wireless sensor node device that improves power supply, power circuit is improved, utilize lithium battery power supply, capable of charging in many ways is provided, and saves the energy.
In order to reach above object, the utility model provides following technical scheme:
A kind of wireless sensor node device that improves power supply, comprise microprocessor module, wireless communication module, RS485 bus interface module, power module and at least one data acquisition module, described data acquisition module is connected with microprocessor module by RS485 bus interface module, described microprocessor module is connected with wireless communication module, described power module is each parts power supply, and described data acquisition module comprises meteorological sensor; Described power module comprises charging inlet unit, the first pressure unit, Charge Management unit, super-charge super-discharge protected location and the lithium battery connecting successively, and described lithium battery is also connected with boosting unit with the second pressure unit.
Further, described charging inlet unit is connected with direct supply, portable power source or sun-generated electric power respectively.
Further, in described wireless communication module, also comprise radio frequency front end chip.
Further, described data acquisition module also comprises image recording device.
Further, described meteorological sensor comprises temperature, humidity sensor, at least one in wind sensor, air velocity transducer, optical sensor.
Compared with prior art, the utility model improves the power-supply system of sensor node, and the restriction of the chip that takes into full account different operating voltage in same aspect, has improved former circuit construction of electric power, makes that it is simple in structure, reliability is high, energy resource consumption is low.The utility model is usingd the main electric weight source of lithium battery as sensor node, by unified interface circuit, solar photovoltaic powered, direct supply, portable power source and lithium battery are combined, make node select best power source design according to actual deployed environment, introduce power management techniques simultaneously, effectively strengthen the energy efficiency of node, thereby greatly improved availability and the stability of sensor node.In addition, the utility model has adopted RS-485 bus interface module connection data acquisition module and microprocessor module, and anti-common mode interference ability strengthens, and noise immunity is good, and the design that further simplifies the structure.
Accompanying drawing explanation
The wireless sensor node apparatus structure block diagram of the improvement power supply that Fig. 1 provides for the utility model;
Fig. 2 is power module structure block diagram;
Fig. 3 is power module circuitry schematic diagram;
Fig. 4 is RS-485 bus interface module circuit theory diagrams;
Fig. 5 is wireless communication module circuit theory diagrams;
Fig. 6 is the data acquisition module structured flowchart with image recording device.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand following embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometric center.
As shown in Figure 1, a kind of wireless sensor node device that improves power supply, comprise microprocessor module, wireless communication module, RS485 bus interface module, power module and at least one data acquisition module, described data acquisition module comprises meteorological sensor, described data acquisition module is connected with microprocessor module by RS485 bus interface module, described microprocessor module is connected with wireless communication module, and described power module is each parts power supply in node apparatus.Data collecting module collected transfers to microprocessor module by RS485 bus interface module after all kinds of weather datas, microprocessor module is done further processing to the data that collect and is coordinated the work of each module, and short-range wireless communication module is sent to gateway node by the data of handling well.The utility model has carried out larger improvement to power module; power module comprises charging inlet unit, the first pressure unit, Charge Management unit, super-charge super-discharge protected location and the lithium battery connecting successively as described in Figure 2, and described lithium battery is also connected with boosting unit with the second pressure unit.Charging inlet unit is lithium cell charging by the first pressure unit, Charge Management unit and super-charge super-discharge protected location.Charging inlet unit adopts unified interface circuit, therefore the control Function Integration Mechanism of the charging of power supply and power supply can be powered to node and is charged, and makes this power-supply system can access flexibly multiple charging system.Like this, according to the variation of sensor node environment for use, apply different power source designs, and carry out effective power management, strengthened the availability of node, improved the validity of energy.In this example, charging inlet unit can be connected with direct supply, portable power source or sun-generated electric power respectively, can by direct supply, portable power source or sun-generated electric power, be lithium cell charging respectively.
Fig. 3 is the circuit theory diagrams of power module, and wherein, interrupteur SW-SPST is controlling the startup of observer nodes and closing.Solar cell and direct supply have the voltage of 9V left and right when charging, and the real work voltage of sensor node is 3.3V, for the battery that buries that reduces to cause because of too high charging voltage damages, we utilize the first voltage reduction module to reduce the directly magnitude of voltage of access lithium battery.Charge management module adopts intelligent high-precision lithium battery managing chip LTC4054, and this chip can carry out effective Charge Management to lithium battery by peripheral circuit.Super-charge super-discharge protection module adopts FDFMA2P853 chip, stops charging at lithium battery voltage when charging high threshold magnitude of voltage.This power module is usingd lithium battery as main power supply, lithium battery is used and buries ion as charge carrier, there is 3.7V to the operating voltage between 4.IV, lithium battery can provide stable 3.3V voltage and boosting unit ME2108A50PG chip that 5V operating voltage is provided by the second pressure unit GS3406 chip, has realized the demand of the work of different chip type sensors in identical platform.Lithium battery as the advantage of power supply is, volume is little, be easy to carry, capacity is large, it is stable to use, can carry out charging and discharging repeatedly and not have memory effect, facilitates deployment and the movement of sensor node.The in the situation that of lithium battery quantity not sufficient, select external power source to power to node.
In this example, microprocessor adopts 8051 CPU core of using in CC2530 chip, and this is monocyclic 8051 compatible kernels, has three kinds of different internal storage access buses (SFR, DATA and CODE/XDATA), monocycle access SFR, DATA and main SRAM.This kernel also comprises a debugging interface and 18 input expanding interrupt locations.The 16(TXD of CC2530 chip pin) and 17(RXD) join with 4 pin and 1 pin of the sn65hvd3082e chip of RS485 interface module respectively, be responsible for collection and the transmission of data.
As shown in Figure 4, RS-485 bus interface module adopts sn65hvd3082e chip to be responsible for transmitting-receiving work, by 5V, powered, it is the RS485 transceiver of a low-power consumption, 1 pin is responsible for by industrial bus agreement, being sent to microprocessor by collecting the data of coming, 4 pin are responsible for transmitting signal to data acquisition module, assign instruction.RS-485 interface is to adopt balance driver and difference, and the combination of receiver, has wide common-mode rejection ratio and high electrostatic discharge protective capability, and anti-common mode interference ability is strong, and noise immunity is good.In addition, can the highest sensor that connects 256 data acquisitions in a bus, greatly reduced the use of I/O, simplified project organization, avoided multisensor carry.
As shown in Figure 5, wireless communication module adopts CC2530 chip, and the Physical layer of this chip and MAC layer are observed 802.15.4 consensus standard, and network layer and application layer are supported Zigbee and 6LOPWAN agreement.Observer nodes carries out communication by short-range wireless communication module and the same intelligent sensor node with this module, each intelligent sensor node sends to gateway node each key element weather data collecting by radio frequency, gateway node to the data that collect store, fusion and long-distance transmissions.In order to increase the communication distance of CC2530, the utility model has increased radio frequency front end chip CC2591 in the radio circuit of CC2530, CC2591 carries out power amplification to radiofrequency signal, between observer nodes and gateway node by radio communication, observer nodes can be disposed arbitrarily in interior space at communication range, be not subject to environmental limit, thereby effectively increased the communication distance between observer nodes and gateway node, guaranteed the stable transfer of data.The 25(RF_P of CC2530) with 26(RF_N) pin is connected with the 2nd pin with the 4th pin of CC2591 respectively after circuit after filtering.Filtering circuit consists of L4 (L7), C15 (C18) and C16 (C17).Wireless communication module adopts radio-frequency module CC2530, configures reversed F-typed PCB antenna, compatible with work EEE802.15.4, be operated in 2.4GHZ frequency range, communication range can reach 10m mono-75m, and for being responsible for transmitting-receiving Monitoring Data and exchange of control information, radio-frequency module CC2530 carries out work by microprocessor.
Further, as shown in Figure 6, described data acquisition module can also comprise image recording device, for example camera.By camera, the realtime graphic that sensor node can also acquisition node position, further enriches the data type that this node apparatus collects.
Specifically, described meteorological sensor comprises temperature, the humidity sensor that meteorological field is conventional, wind sensor, air velocity transducer, optical sensor etc.These sensors can gather accurate weather data.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned embodiment, also comprises the technical scheme being comprised of above technical characterictic combination in any.It should be pointed out that for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (5)
1. a wireless sensor node device that improves power supply, comprise microprocessor module, wireless communication module, RS485 bus interface module, power module and at least one data acquisition module, described data acquisition module is connected with microprocessor module by RS485 bus interface module, described microprocessor module is connected with wireless communication module, described power module is each parts power supply, and described data acquisition module comprises meteorological sensor; It is characterized in that: described power module comprises charging inlet unit, the first pressure unit, Charge Management unit, super-charge super-discharge protected location and the lithium battery connecting successively, and described lithium battery is also connected with boosting unit with the second pressure unit.
2. the wireless sensor node device of improvement power supply according to claim 1, is characterized in that: described charging inlet unit is connected with direct supply, portable power source or sun-generated electric power respectively.
3. the wireless sensor node device of improvement power supply according to claim 1 and 2, is characterized in that: in described wireless communication module, also comprise radio frequency front end chip.
4. the wireless sensor node device of improvement power supply according to claim 1 and 2, is characterized in that: described data acquisition module also comprises image recording device.
5. the wireless sensor node device of improvement power supply according to claim 1, is characterized in that: described meteorological sensor comprises temperature, humidity sensor at least one in wind sensor, air velocity transducer, optical sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420012493.6U CN203733279U (en) | 2014-01-09 | 2014-01-09 | Wireless sensor node device with improved power supply |
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| CN201420012493.6U CN203733279U (en) | 2014-01-09 | 2014-01-09 | Wireless sensor node device with improved power supply |
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| CN203733279U true CN203733279U (en) | 2014-07-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031469A (en) * | 2018-06-25 | 2018-12-18 | 成都智棚农业科技有限公司 | Integral photovoltaic is wireless weather station |
| CN113080074A (en) * | 2021-04-16 | 2021-07-09 | 河南牧原智能科技有限公司 | Under-board manure cleaning machine |
-
2014
- 2014-01-09 CN CN201420012493.6U patent/CN203733279U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031469A (en) * | 2018-06-25 | 2018-12-18 | 成都智棚农业科技有限公司 | Integral photovoltaic is wireless weather station |
| CN113080074A (en) * | 2021-04-16 | 2021-07-09 | 河南牧原智能科技有限公司 | Under-board manure cleaning machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20170109 |