CN202033488U - Automatic weather station based on wireless sensing network - Google Patents
Automatic weather station based on wireless sensing network Download PDFInfo
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- CN202033488U CN202033488U CN2011200828818U CN201120082881U CN202033488U CN 202033488 U CN202033488 U CN 202033488U CN 2011200828818 U CN2011200828818 U CN 2011200828818U CN 201120082881 U CN201120082881 U CN 201120082881U CN 202033488 U CN202033488 U CN 202033488U
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Abstract
The utility model relates to an automatic weather station based on a wireless sensing network, which comprises a processor module which is uniformly coordinated with other modules to work, and a wireless communication module for transmitting a signal to a background main work station, the automatic weather station also comprises a sensor module which is arranged at a weather station node and is used for collecting and monitoring weather factors, a memory module for storing data, and a power supply module, wherein the processor module is respectively connected with the memory module, the wireless communication module, the sensor module and the power supply module. The processor module uniformly coordinates the work of other modules. The processor module controls the sensor module to collect weather data and to process the weather data. The processor module stores the processed data into the memory module, and the processed data is transmitted to the background main work station through the wireless communication module. The processor module receives control information which is transmitted from the main work station through the wireless communication module so as to control the work of the entire automatic weather station nodes. The node can efficiently and accurately collect the data, and the anti-interference is strong. The weather factor nodes can be conveniently added and replaced, and an economic benefit can be realized.
Description
Technical field
The utility model relates to a kind of weather station, refers to a kind of automatic weather station based on the wireless sensing network technology especially, and by the wireless sensing net node that scatters, ad-hoc network carries out meteorological element collection and monitoring.
Background technology
At present domestic automatic weather station is wired automatic weather station mostly, generally can collecting temperature, humidity, wind speed, wind direction, air pressure, six meteorological elements of rainfall.Along with environment changes day by day, add new meteorological element if desired, then need to change whole automatic weather station, its wiring cost height.For some complex-terrains such as mountain area or polar regions, keep a traditional automatic weather station cost prohibitive.Publication number CN1402020A has announced a kind of automatic weather station, and this weather station is by multiple sensors, data acquisition unit, preposition controller, master controller, be formed by connecting by various interface, the function that can realize observing and handle in real time.What but this automatic weather station adopted is wired mode, and the wiring cost height is safeguarded inconvenience, and for some environment place abominable, with a varied topography, the effective collection and the monitoring of weather data can't be realized in zone that personnel can not arrive or interim disaster zone.Fast development along with subjects such as computing machine, electronic technology, Machine Designs has been pregnant with a kind of novel message control network----wireless sense network.Wireless sensor network is one group of wireless ad hoc network that is made of sensors A d hoc (point-to-point) mode.Its objective is the information of perception, collection and the processing network coverage geographic area and the perceptive object of cooperation, be distributed to the observer.
The utility model content
The purpose of this utility model has provided a kind of automatic weather station node based on wireless sensor network, and this utility model has effectively overcome above shortcoming, has reduced wiring cost, and is easy to maintenance.Realized under long-term unmanned guard's situation, the collection and the monitoring of meteorological element.
The utility model is achieved through the following technical solutions the utility model purpose:
A kind of automatic weather station based on wireless sense network, comprise other each module work of united and coordinating processor module, and with backstage master's workstation carry out signal transmission wireless communication module, also comprise the sensor assembly that is arranged on node place, weather station and is used for meteorological element collection and monitoring, the memory module that is used for storage data, reach power module, processor module links to each other with memory module, wireless communication module, sensor assembly and power module respectively.The work of the module of processor module united and coordinating other each.Processor module control sensor assembly is gathered weather data, and data are handled.Processor module in memory module, and sends to backstage master's workstation by wireless communication module with the data storing handled well.Processor module also can and by the control information that wireless communication module receives autonomous workstation to send, control the work of whole automatic weather station node.
Wireless communication module links to each other with processor module, sends data to main workstation under the control of processor module, and can receive the control information of autonomous workstation.
Memory module: the automatic weather station node need be stored large-capacity data, and in the native system design process, the NandFlash that has extended out 64M is used to store data.NandFlash as the data file access unit, and is made the JFF2 file system in the above, realize the power down protection of system information.
Sensor assembly: sensor assembly comprises Temperature Humidity Sensor, rain sensor etc.The automatic weather station node is gathered meteorological elements such as humiture, rainfall by sensor assembly, the simulating signal of gathering is converted to digital signal through A/D, obtains measured temperature or rainfall value.Sensor assembly is sent to processor module with data, carries out united and coordinating work by processor module.
Power module: automatic weather station need not to arrange the people on duty, and some meteorological element node place need be placed in the abominable place of geographical environment, has movability.So adopt the unified power supply of 2 joint dry cell batteries.The power consumption maximum is exactly wireless communication module in the wireless sensor network node, adopts the low power dissipation design pattern in this paper design.With the temperature is example, generally can not undergo mutation at short notice.Generally speaking, wireless communication module enters dormant state, if current data is compared with historical data, changes greater than 0.1 degree centigrade, and the wake on wireless communication module sends message to main workstation.In order to guarantee data accuracy, timer is set, per wake on wireless communication module transmission half an hour data are once.
Beneficial effect:
Along with technical progress, wireless sense network is widely used in military affairs, environmental science, medical treatment, space exploration and other commercial use.This utility model is applied to automatic weather station with the ZigBee wireless sensor network, has designed a kind of novel wireless automatic weather station node, and adopting S3C2410 is its main control chip, and Linux is as operating system, and CC2420 is as radio transmitting and receiving chip.Node is image data effectively accurately, strong interference immunity.Can add easily and change the meteorological element node, have certain economic benefits.For some environment place abominable, with a varied topography, zone that personnel can not arrive or interim occasion (when disaster takes place) have more far reaching significance.
Description of drawings
Fig. 1 is an automatic weather station node work block diagram
Fig. 2 is an automatic weather station design of node block diagram
Fig. 3 is automatic weather station node wireless communication module circuit theory diagrams
Fig. 4 is an automatic weather station node Temperature Humidity Sensor modular circuit schematic diagram
Specific embodiment:
A kind of automatic weather station based on wireless sense network, comprise other each module work of united and coordinating processor module, and with backstage master's workstation carry out signal transmission wireless communication module, also comprise the sensor assembly that is arranged on node place, weather station and is used for meteorological element collection and monitoring, the memory module that is used for storage data, reach power module, processor module links to each other with memory module, wireless communication module, sensor assembly and power module respectively.The work of the module of processor module united and coordinating other each.Processor module control sensor assembly is gathered weather data, and data are handled.Processor module in memory module, and sends to backstage master's workstation by wireless communication module with the data storing handled well.Processor module also can and by the control information that wireless communication module receives autonomous workstation to send, control the work of whole automatic weather station node.
Wireless communication module links to each other with processor module, sends data to main workstation under the control of processor module, and can receive the control information of autonomous workstation.
Memory module: the automatic weather station node need be stored large-capacity data, and in the native system design process, the NandFlash that has extended out 64M is used to store data.NandFlash as the data file access unit, and is made the JFF2 file system in the above, realize the power down protection of system information.
Sensor assembly: sensor assembly comprises Temperature Humidity Sensor, rain sensor etc.The automatic weather station node is gathered meteorological elements such as humiture, rainfall by sensor assembly, the simulating signal of gathering is converted to digital signal through A/D, obtains measured temperature or rainfall value.Sensor assembly is sent to processor module with data, carries out united and coordinating work by processor module.
Power module: automatic weather station need not to arrange the people on duty, and some meteorological element node place need be placed in the abominable place of geographical environment, has movability.So adopt the unified power supply of 2 joint dry cell batteries.The power consumption maximum is exactly wireless communication module in the wireless sensor network node, adopts the low power dissipation design pattern in this paper design.With the temperature is example, generally can not undergo mutation at short notice.Generally speaking, wireless communication module enters dormant state, if current data is compared with historical data, changes greater than 0.1 degree centigrade, and the wake on wireless communication module sends message to main workstation.In order to guarantee data accuracy, timer is set, per wake on wireless communication module transmission half an hour data are once.
The S3C2410 chip is adopted in the processor module design, and this is a 32 risc processors, and its kernel is based on ARM920T, has the MMU function.Extend out mass storage, and had accurate clock circuit.Wireless communication module 2 adopts zigbee chip CC2420, and the CC2420 radio frequency chip is the 2.4GHZ radio frequency chip that meets the zigbee standard of chipcon company exploitation.Zigbee adopts Physical layer and the medium Access Layer standard of IEEE802.15.4 as its bottom, has defined zigbee network layer, application support sublayer and application layer standard.It is a kind of closely, low-power consumption, radio network technique cheaply, be mainly used in short range transmission.The working frequency range of ZigBee is divided into 3, wherein on the 2.4GHZ frequency range, is divided into 16 channels, and this frequency range is industry, science, the medical science frequency range of global general-use, and this frequency range is to exempt from the radio frequency band of paying, exempting to apply for.
The memory module design has extended out the NandFlashK9F1208-YCB0 of 64M, with the access unit of NandFlash as weather data in order to guarantee the large-capacity data storage.The data line of NandFlash, address wire link to each other with address wire respectively at the data line of main control chip S3C2410.
Wireless communication module design S3C2410 is operated in holotype, and cc2420 is operated in from pattern.Processor chips S3C2410 has 2 groups of SPI, in native system design, use be SPI0.The SPI interface of cc2420 is made up of CSn, SI, SO and SCLK pin, respectively at the SPNSS0 of s3c2410, and SPIMOSI0, SPIMISO0, SCLK0 connects.S3c2410 is by SPI interface accessing CC2420 internal register and storer, and Cc2420 receives respectively from the chip selection signal of s3c2410 and clock signal, and under the control of s3c2410, carry out input output function.The SFD of CC2420, FIFO, a FIFOP and CCA4 pin is respectively at 4 GPIO mouths connections of s3c2410, the state of expression transceive data.Processor module can be by the duty of these four pin inquiry wireless communication modules.
Power module design automatic weather station need not to arrange the people on duty, and some meteorological element node need be placed in the abominable place of geographical environment, has movability.So adopt the unified power supply of 2 joint dry cells.The power consumption maximum is exactly wireless communication module 2 in the wireless sensor network node, adopts the low power dissipation design pattern in this paper design.With the temperature is example, generally can not undergo mutation at short notice.Generally speaking, wireless communication module enters dormant state, if current data is compared with historical data, changes greater than 0.1 degree centigrade, and the wake on wireless communication module sends message to main workstation.In order to guarantee data accuracy, timer is set, per wake on wireless communication module transmission half an hour data are once.Design can reduce the loss of power supply greatly like this.Generally can work more than 6 months.Under the situation of some conditions permits, also can adopt solar cell for supplying power.
Sensor assembly mainly comprises Temperature Humidity Sensor, rain sensor etc.Temperature Humidity Sensor adopts the HMP45D of Finland VAISALA company exploitation.The HMP45D temperature element adopts platinum resistance pt100.Platinum resistance has that resistance varies with temperature and the characteristic that changes is utilized four line constant current source power supply mode and linearizers, the sensor electrical resistance is changed the variation that is converted into magnitude of voltage temperature is measured.Temperature sensor provides constant electric current I
0, the platinum resistance of flowing through R
t=R
0(1+ α t+ β t), voltage U=I
0R
tSend the A/D change-over circuit to by voltage lead, obtain measured temperature value.The output signal of rain sensor is a switching signal, adopts tipping bucket rain gauge, and by holding the precipitation that accept at the mouth of a river, through the upset of tipping bucket, the adhesive tongue tube produces make-and-break signal, counts processing, the conversion rainfall through counter circuit when precipitation.
Principle of work: the utility model is applied to automatic weather station with the ZigBee wireless sensor network, has designed a kind of novel wireless automatic weather station node, and adopting S3C2410 is its main control chip, and Linux is as operating system, and CC2420 is as radio transmitting and receiving chip.Wireless sensing net node is by sensor assembly collection and monitoring meteorological element, and data are delivered to processor module, the work of processor module united and coordinating control whole node, the weather data of gathering is handled and analyzed, and the data after will handling by wireless communication module send to main workstation.Node is image data effectively accurately, strong interference immunity.
The course of work: the worker in meteorology is dispersed in the geographic area that needs monitoring with the automatic weather station node, for example high mountain, lake, grassland and the manpower place that can't arrive.The sensor assembly of automatic weather station node is used for the collection of meteorological element.Processor module is used to receive the weather information that collects, and data are analyzed and handled, and the data after wireless communication module is handled processor module send to main workstation.The worker in meteorology receives weather data by backstage master's workstation, need not manually image data in person, for some environment place abominable, with a varied topography, zone that personnel can not arrive or interim occasion (when disaster takes place) have more far reaching significance.When needs increase or change automatic automatic weather station node, only need new node is dispersed in the appointed area, extendability is easy to maintenance by force.
Claims (4)
1. automatic weather station based on wireless sense network, it is characterized in that: comprise other each module work of united and coordinating processor module, and with backstage master's workstation carry out signal transmission wireless communication module, also comprise the sensor assembly that is arranged on node place, weather station and is used for meteorological element collection and monitoring, the memory module that is used for storage data, reach power module, described processor module links to each other with described wireless communication module, sensor assembly, memory module and power module respectively.
2. the automatic weather station based on wireless sense network as claimed in claim 1 is characterized in that: described sensor assembly comprises temperature sensor, humidity sensor and rain sensor.
3. the automatic weather station based on wireless sense network as claimed in claim 1 is characterized in that: described wireless communication module sends data to main workstation under the control of processor module, and can receive the control information of autonomous workstation.
4. the automatic weather station based on wireless sense network as claimed in claim 1 is characterized in that: described power module is provided with timer, and main control module wake on wireless half an hour communication module sends data once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200828818U CN202033488U (en) | 2011-03-25 | 2011-03-25 | Automatic weather station based on wireless sensing network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200828818U CN202033488U (en) | 2011-03-25 | 2011-03-25 | Automatic weather station based on wireless sensing network |
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| CN202033488U true CN202033488U (en) | 2011-11-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235351A (en) * | 2013-04-26 | 2013-08-07 | 中国人民解放军理工大学 | Built-in communication module for portable atmospherium |
| CN106556880A (en) * | 2016-11-23 | 2017-04-05 | 苏州大学 | A kind of weather monitoring sensor node based on ZigBee |
-
2011
- 2011-03-25 CN CN2011200828818U patent/CN202033488U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235351A (en) * | 2013-04-26 | 2013-08-07 | 中国人民解放军理工大学 | Built-in communication module for portable atmospherium |
| CN106556880A (en) * | 2016-11-23 | 2017-04-05 | 苏州大学 | A kind of weather monitoring sensor node based on ZigBee |
| CN106556880B (en) * | 2016-11-23 | 2019-12-27 | 苏州大学 | Meteorological monitoring sensor node based on zigBee |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20130325 |