CN103648185A - Sink node of water environment wireless sensing monitoring network - Google Patents
Sink node of water environment wireless sensing monitoring network Download PDFInfo
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- CN103648185A CN103648185A CN201310585786.3A CN201310585786A CN103648185A CN 103648185 A CN103648185 A CN 103648185A CN 201310585786 A CN201310585786 A CN 201310585786A CN 103648185 A CN103648185 A CN 103648185A
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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 invention relates to a sink node of a water environment wireless sensing monitoring network, the sink node comprising a processor unit, a sensing unit, a communication unit and a power supply module. The processor unit includes a dual microcontroller, a dual memory and an A/D conversion portion; the dual microcontroller is composed of a K60N512 of ARM architecture and an MC13211 of HCS08 architecture, wherein the K60N512 is used for acquiring data and forwarding data processing, the MC13211 is used for wireless data communication and a Zigbee protocol is used here; the dual memory is a FLASH internally integrated by the K60N512 and the MC13211, and is used for storing data; and the A/D conversion portion receives and converts data of the sensing unit. A power module employs a dual power supply of a lithium battery and a solar cell to supply power for the processor module, a sensor module, and a Zigbee wireless communication module. The sink node provided by the invention is flexible in configuration, low in power, low in cost and the like, and belongs to the wireless monitoring and controlling fields.
Description
Technical field
The present invention relates to a kind of water environment wireless sensing monitoring net aggregation node, belong to wireless monitor control field.
Background technology
Domestic about water quality parameter, collection adopts the Water Test Kits of single parameter more, the problem such as its price is low, simple to operate, can not monitor continuously water quality, and labour intensity is large, and mobility is poor, and acquisition speed is slow.Cannot meet water field of big area, the demand of complex-terrain water area water-quality parameter monitoring.Therefore need to look for a kind of new technology, solve large area, many waters and complex-terrain water environment water quality parameter monitoring management and seem particularly necessary.
Wireless sensor network is as an emerging technology, by being deployed in, cheap nodes a large amount of in monitored area forms, by communication, form the ad-hoc network of a multi-hop, the perceptive object information in cooperation acquisition and processing monitored area, and send to observer.Its appearance has produced a kind of brand-new Information acquisi-tion mode.In conjunction with the transducer of different types, wireless sensor network has broad application prospects in various fields such as environmental monitoring, military inspection, Smart Home, intelligent transportation, Industry Control.Water environment wireless sensing monitoring net is that wireless sensor network is in the typical case's application in environmental monitoring field.Compare with existing water environment automatic monitoring system, that water environment wireless sensing monitoring net has is little to eco-environmental impact, monitored density is high and in extensive range, the advantage such as system cost is low.
Water environment wireless sensing monitoring net is shed waters interested by a large amount of sensor nodes (quantity is from hundreds of to several thousand), and node forms a wireless network fast by self-organizing.Node comprises ordinary node, aggregation node and base station etc.Aggregation node had both been born the collection of information, also bore and collected the information that ordinary node is sent, and forward, and related to the processing such as Route Selection, topological structure.Therefore, aggregation node plays a key effect in water environment wireless sensing monitoring net, and its performance is directly connected to the stable of monitoring network.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the invention is to provide a kind of water environment sensor monitoring net aggregation node.It is large that this aggregation node has monitoring range; flexible configuration; feature low in energy consumption, little to natural environment influence, with low cost; can realize the multi-point remote multi-parameter real time on-line monitoring to water environment; find in time paroxysmal water pollution accident, so that relevant departments can take measures in time, search and pollute source; reduce to pollute the impact on agricultural water, animal husbandry water and people's domestic water, monitoring and environmental protection that water environment is changed have great development prospect and realistic meaning.
The invention provides a kind of monitoring water environment net aggregation node based on wireless sensor network, comprising: processor module, sensor assembly, power module, communication module, memory module.All modules are all passed through water-proofing treatment, and power module is that processor module and sensor assembly, communication module are powered.
In Acquisition Circuit, transducer pre-process circuit connects pH transducer, salinity sensor and temperature sensor under water, can gather pH value, salinity value and the temperature in waters to be monitored, then the pH signal of collection, salinity signal and water temperature signal are converted to the voltage signal of 0～5V and deliver to processor module.
The voltage signal that processor module receiving sensor sends, processes and stores pH signal, salinity signal and water temperature signal, then by communication module, is sent to base station.It is core that processor in communication module be take the MC13211 chip that Freescale company produces, and communicating by letter between the main responsible node networking of MC13211, node and base station, transmits water quality parameter data between node.Aggregation node data volume, data-handling capacity are much larger than ordinary node, and therefore, aggregation node increase is data processor independently, i.e. the K60N512 of ARM framework, the processing that realizes data with communicate by letter.
In order to expand the memory data output of aggregation node, except relying on the integrated Flash capacity of microcontroller self, also should extend out independently memory space.The erasable formula storage hierachy of the electricity 24LC1025 chip that adopts Microchip Technology (Microchip Technology Inc.) to produce.
Monitoring node power module comprise two parts power supply :+3.3V and+5V.Wherein a part of export after voltage stabilizing+5V of lithium battery output+12V direct voltage, gives sensor assembly, serial port module and memory module power supply.Another part by be converted to+3.3V of voltage stabilizing DC-voltage supply to MC13211 minimum system and wireless communication module.In order fully ensureing, to adopt lithium battery and solar cell Double-battery powered mode by the unattended operation of monitoring node work, under existence conditions, to have improved to greatest extent the flying power of battery, guaranteed the life cycle of node.
Wireless communication module design.Between each monitoring node, pass through the networking of Zigbee communication protocol, and be connected with base station, by base station commands, control uploading data.Network structure network based on IEEE802.15.4/zighee agreement is a kind of topological structure of multi-hop, can realize the point-to-point transmission between each node of network, this structure is interconnected to form netted, network is very healthy and strong, fault-tolerant ability is stronger, when individual link and terminal node inefficacy, can transmit by rerouting, transmission range and reliability are also strong than other structural network.
Accompanying drawing explanation
The system configuration schematic diagram of Fig. 1 water environment wireless sensing of the present invention monitoring net aggregation node;
The signal conditioning circuit principle connection layout of Fig. 2 temperature sensor;
The signal conditioning circuit principle connection layout of Fig. 3 PH transducer;
The signal conditioning circuit principle connection layout of Fig. 4 salinity sensor;
The minimum system reference circuit principle connection layout of Fig. 5 microcontroller MC13211;
Fig. 6 transmitting antenna and power amplifier modulate circuit principle connection layout;
Fig. 7 battery management module circuit theory connection layout.
Fig. 8 memory module circuit theory connection layout.
The minimum system reference circuit principle connection layout of Fig. 9 microcontroller K60N512.
Specific embodiments
Below in conjunction with accompanying drawing, the present invention is described in detail:
Fig. 1 is the system configuration schematic diagram that the present invention is based on the monitoring water environment net aggregation node of wireless sensor network.This node device comprises sensing unit, processing unit, communication unit and Power supply unit.
(1) sensing unit comprises transducer and signal conditioning circuit two parts.
Transducer is responsible for gathering pH value, salinity value and the water temperature in waters to be monitored.Monitoring node is provided with pH transducer, salinity sensor and temperature sensor, can gather pH value, salinity value and the water temperature of water body, and signal conditioning circuit is done the processing such as linearisation, temperature-compensating to the data that gather.
From Fig. 2 TMP, obtain water temperature signal, and be sent to the TMP pin in the minimum system reference circuit principle connection layout of Fig. 5 microcontroller MC13211; From Fig. 3 PH interface, obtain pH value signal, and be sent to the PH pin in the minimum system reference circuit principle connection layout of Fig. 5 microcontroller MC13211; From Fig. 4 Salinity interface, obtain salinity value signal, and be sent to the Salinity pin in the minimum system reference circuit principle connection layout of Fig. 5 microcontroller MC13211.
(2) processing unit comprises microcontroller, memory and A/D converter.
Between microcontroller MC13211 responsible node, transmit data, as shown in Figure 5; Microcontroller K60N512 is responsible for data storage and forwards, as shown in Figure 9.Water quality parameter after node collects and processes, is not to upload to immediately base station, therefore need to be temporarily stored according to certain storage organization node this locality.Water quality parameter can adopt the mode of regularly uploading, also can the instruction of passive receive host computer after, according to the requirement of host computer, upload corresponding water quality parameter historical data.
From Fig. 5 RxD and TxD interface wireless, obtain other node data, be transferred to respectively TxD and RxD pin in the minimum system reference circuit principle connection layout of Fig. 9 microcontroller K60N512.
(3) communication unit comprises transmitting antenna and power amplifier modulate circuit.
Monitoring network is set up the radio communication based on Zigbee communication.Between monitoring node, by Zigbee wireless communication technology, carrying out the transmission of data, adopt the transmission of multi-hop formula that the water quality parameter of collection is pooled to base station, is communicated by letter the parameter converging is transferred to remote data center by GPRS in base station.The effect of transmitting power amplifying circuit is that wireless transceiver input power is amplified to reach desired output power.Because digital received and sent is all realized by same antenna circuit, in antenna end, add the Transmit enable that a radio frequency single-pole double-throw switch (SPDT) is realized data.
RFIN_P from Fig. 6 and RFIN_M interface obtain wireless communication data, and are sent to respectively RFIN_P and RFIN_M pin in the minimum system reference circuit principle connection layout of Fig. 5 microcontroller MC13211.
(4) energy module comprises energy supply and energy management.
Consider that monitoring node need to be deployed in water for a long time, often change battery and be not easy to realize, and manually change also extra labor intensive material resources of battery, increase monitoring cost, be also unfavorable for the continuation of monitoring.So add energy management module in the design of monitoring node, Real-Time Monitoring battery remaining power, by the dump energy of acquisition node, each module of node is carried out to necessary energy distribution, to reach the object that extends node life cycle and uninterruptedly monitor continuously waters.
Battery management module circuit theory connection layout as shown in Figure 7, its can Real-Time Monitoring electric quantity of lithium battery, and can realize lithium battery and starve charging/discharging function, and is provide+5V of node voltage.
(5) Data Storage.
Compare with general node, the storage capacity of aggregation node is relatively strong, and its connects wireless sensor network and is connected with base station, the data retransmission of collection on base station and external network.Therefore, aggregation node except will meeting the basic function such as data acquisition, data processing, radio communication of terminal node, also will have stronger data storage function in design.In order to expand the memory data output of aggregation node, except relying on the integrated Flash capacity of microcontroller self, also need to extend out independently memory space.Adopt electric erasable formula storage hierachy 24LC1025 chip, data storage capacity is 1024K.This family device is supported 2 line serial line interfaces, with 8 bit memory pieces, combines.
In Fig. 8 under SCL interface clock, from SDA interface, obtain data, and be sent to respectively SCL and SDA pin in the minimum system reference circuit principle connection layout of Fig. 9 microcontroller K60N512.
Claims (2)
1. water environment wireless sensing monitoring net aggregation node, is characterized in that comprising: the Zigbee wireless transceiver module for connecting sensor group to obtain the sensor interface of temperature, pH value and salinity value, the data processing module being connected with sensor interface, to be connected with data processing module.
2. according to claim 1 in the water environment monitoring node of wireless sensor network, it is characterized in that: it is the K60N512 chip of Freescale Kinetis series that processing module adopts model.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750077A (en) * | 2015-03-21 | 2015-07-01 | 浙江海洋学院 | Water quality monitoring system of offshore cage based on ZigBee and GPRS (General Packet Radio Service) technologies |
| CN108414709A (en) * | 2018-01-15 | 2018-08-17 | 昆山奕盛来环境科技有限公司 | A kind of detection device of contaminated wastewater degree |
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| US20090303837A1 (en) * | 2008-06-05 | 2009-12-10 | Keith William L | Method to estimate local towed array angles using flush mounted hot film wall shear sensors |
| CN201681071U (en) * | 2009-12-11 | 2010-12-22 | 中国计量学院 | Multi-parameter modularized aquaculture water environment wireless monitoring system |
| CN202562906U (en) * | 2012-03-15 | 2012-11-28 | 邹赛 | Wireless sensing network based water environmental pollution monitoring system |
| CN202582603U (en) * | 2012-05-02 | 2012-12-05 | 南昌工程学院 | Gathering node of water environment monitoring sensor network |
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Patent Citations (5)
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| CN101281187A (en) * | 2008-04-08 | 2008-10-08 | 杭州电子科技大学 | Water environment monitoring node based on ZigBee wireless technique |
| US20090303837A1 (en) * | 2008-06-05 | 2009-12-10 | Keith William L | Method to estimate local towed array angles using flush mounted hot film wall shear sensors |
| CN201681071U (en) * | 2009-12-11 | 2010-12-22 | 中国计量学院 | Multi-parameter modularized aquaculture water environment wireless monitoring system |
| CN202562906U (en) * | 2012-03-15 | 2012-11-28 | 邹赛 | Wireless sensing network based water environmental pollution monitoring system |
| CN202582603U (en) * | 2012-05-02 | 2012-12-05 | 南昌工程学院 | Gathering node of water environment monitoring sensor network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104750077A (en) * | 2015-03-21 | 2015-07-01 | 浙江海洋学院 | Water quality monitoring system of offshore cage based on ZigBee and GPRS (General Packet Radio Service) technologies |
| CN108414709A (en) * | 2018-01-15 | 2018-08-17 | 昆山奕盛来环境科技有限公司 | A kind of detection device of contaminated wastewater degree |
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Application publication date: 20140319 |