CN101232195A - Dormancy awakening method and industry wireless sensor network system based on solar energy - Google Patents
Dormancy awakening method and industry wireless sensor network system based on solar energy Download PDFInfo
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- CN101232195A CN101232195A CNA200810046787XA CN200810046787A CN101232195A CN 101232195 A CN101232195 A CN 101232195A CN A200810046787X A CNA200810046787X A CN A200810046787XA CN 200810046787 A CN200810046787 A CN 200810046787A CN 101232195 A CN101232195 A CN 101232195A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to an industrial wireless sensor network system based on solar energy, which comprises a solar energy collector, an energy storage unit and a sensor node. The invention further relates to a sleep wakeup method, which comprises following steps: acquiring a sleep wakeup parameter by the sensor node; determining the current state of the sensor node; and comparing the sleep wakeup parameter with a preset threshold value and determining the state of the sensor node according to the current state. Accordingly, the wireless sensor network system based on solar energy and the sleep wakeup method depending on the channel state, the solar cell state and the solar irradiation state in the wireless sensor network can effectively prolong the service life of the network and provide a network structure capable of sustainable development, thus providing better energy-conservation safeguard for the system.
Description
Technical field
The present invention relates to the radio sensing network technical field, relate in particular to a kind of industry wireless sensor network system and dormancy awakening method thereof based on solar energy.
Background technology
Wireless sensor network is current receive much concern in the world, relate to multidisciplinary height intersection, the integrated hot research field, forward position of knowledge height.It combines sensor technology, embedded computing technique, modern network and wireless communication technology, distributed information processing etc., can be by the information of the monitoring in real time of all kinds of integrated microsensor node cooperation ground, perception and various environment of collection or monitoring target.These information are sent out by wireless mode, and be sent to user terminal with the network mode of organizing multi-hop certainly, possess good prospects for application, but its energy consumption problem is a big bottleneck of limited its application always, power saving also is a very important aspect of design wireless sensor network system.
Dormant technology in the existing wireless sensor network mainly contains two kinds of periodically dormancy and self-adapting dormancies.Periodically dormancy is meant in node is at a fixed time and is in dormancy or active state, is activity-park mode of fixing because node adopts, cause can not fine adaptation offered load variation, also exist the long and not high deficiency of energy efficiency of time-delay.Self-adapting dormancy be on the basis of periodicity dormancy, carry out improved, the main distinction is exactly that node dormancy and activity time are according to the communication flows dynamic change, this method adopts dynamic duty ratio more energy-conservation, but because its positive dormancy, often make the too early resting state that enters, reduce the throughput of network, increased the time-delay of network.
At present in the construction of national economy, solar energy becomes the first-selected energy supply scheme that outdoor wireless is used just gradually, its major advantage is as follows: as the abundantest available nonvolatil energy, it is to 15 minutes energy of ground irradiation, and the just enough whole world was used 1 year; Solar energy grows on trees, and does not need transportation; Solar energy can not bring pollution when using, and is a kind of energy of cleaning.Based on aforesaid multiple advantage, solar energy can effectively use in low-power equipment and remote application scenario.Solar energy only relies on the minority hours of daylight among one day can store enough energy, and when not having sunlight, solar cell discharges the energy of being stored, and keeps the power demands of system.
For this reason, based on the plurality of advantages of solar energy with for energy-conservation and consideration environmental protection, the present invention introduces solar powered thought, for sensor network system provides energy source, prolonged the lifetime of network, a kind of wireless sensor network structure of sustainable development is provided.In addition, take all factors into consideration the dormancy awakening method of node in the solar energy radio sensor network from many aspects, as described based on solar cell state, radio channel state and solar radiation state etc., take all factors into consideration balance, for better energy-conservation guarantee is provided based on solar powered wireless sensor network system.
Summary of the invention
In order to solve in the prior art problem that periodically dormancy and self-adapting dormancy exist, based on the plurality of advantages of solar energy with for energy-conservation and consideration environmental protection, the invention provides a kind of wireless sensor network system based on solar energy, so that network work is more stable, prolong the lifetime of network, a kind of network configuration of sustainable development is provided; And a kind of dormancy awakening method, for system provides more effective energy-conservation guarantee.
To achieve these goals, a kind of industry wireless sensor network system provided by the invention based on solar energy, this system comprises:
Solar collector is used to collect solar energy;
Energy storage units is connected with described solar collector, is used for solar energy storage that described solar collector is collected and the energy that storage is provided to sensor node;
Sensor node, be connected with described energy storage units,, obtain relevant dormancy awakening parameter according to the performance of network system by the energy power supply of described energy storage units storage, described dormancy awakening parameter and predefined threshold value are compared, to determine the state of sensor node.
Wherein, described solar collector comprises:
Solar cell is used to described sensor node power supply;
Control circuit is connected with described solar cell, is used to control the operating state of described system, and solar cell is carried out additives for overcharge protection, over.
Wherein, described energy storage units comprises:
The multilayer energy accumulator, the energy that storage is collected by described solar collector can be selected the size of energy storage capacity by selecting the number of plies of energy storage, and the number of plies is many more, and the energy that can store is big more;
Charging control and commutation circuit are connected with described multilayer energy accumulator, are used to control the number of plies of described multilayer energy accumulator and switch select.
To achieve these goals, a kind of dormancy awakening method provided by the invention is characterized in that comprising:
When described dormancy awakening parameter is the solar cell state value, it is characterized in that described predefined threshold value is for changing the critical value of activity pattern over to from park mode; Described step 3 is specially: the size of judging described solar cell state value, if be higher than the described critical value that changes activity pattern from park mode over to, then node changes activity pattern over to from park mode, if be lower than the described critical value that changes activity pattern from park mode over to, node keeps park mode, and continues to obtain the solar cell state value at next time slot.
Described predefined threshold value is for changing the critical value of activity pattern over to from park mode; Described step 3 is specially: the state value size of judging the radio communication channel of described prediction, if be higher than the described critical value that changes activity pattern from park mode over to, then node changes activity pattern over to from park mode, if be lower than described predefined threshold value 4, node then keeps park mode, and predicts the state value of next slotted radio channel.
When described dormancy awakening parameter is the state value of solar radiation, it is characterized in that described predefined threshold value is for changing the critical value of activity pattern over to from park mode; Described step 3 is specially: the state value size of judging described solar radiation, if be higher than the described critical value that changes activity pattern from park mode over to, then node changes activity pattern over to from park mode, if be lower than the described critical value that changes activity pattern from park mode over to, node then keeps park mode, continues to read the state value of solar radiation at next time slot.
Described predefined threshold value is node changes park mode over to from activity pattern a critical value; When described dormancy awakening parameter is the solar cell state value, described step 3 is specially: judge whether described solar cell state value is lower than the described critical value that changes park mode from activity pattern over to, in this way, then change park mode over to from activity pattern, as be higher than, then keep activity pattern and obtain the solar cell state value at next time slot.
Described predefined threshold value is node changes park mode over to from activity pattern a critical value; When described dormancy awakening parameter is the state value of radio communication channel, described step 3 is specially: whether the state value of judging described radio communication channel is lower than the described critical value that changes park mode from activity pattern over to, in this way, then change activity pattern over to from park mode; Otherwise, keep activity pattern continues to read radio communication channel at next time slot state value.
Described predefined threshold value is node changes park mode over to from activity pattern a critical value; When described dormancy awakening parameter was the state value of solar radiation, described step 3 was specially: whether the state value of judging described solar radiation is lower than describedly changes the critical value of park mode over to from activity pattern, in this way, then changes activity pattern over to from park mode; Otherwise, keep activity pattern continues to read solar radiation at next time slot state value.
Therefore, the present invention is by providing the wireless sensing network system based on solar energy, and the state that relies on channel status, solar cell state, solar radiation in the wireless sensor network carries out the method for dormancy awakening, effectively prolonged the lifetime of network, a kind of network configuration of sustainable development is provided, and provides better energy-conservation guarantee for system.
Description of drawings
Fig. 1 is the industry wireless sensor network system structure chart based on solar energy of the present invention.
Fig. 2 is the node power supply illustraton of model of the industry wireless sensor network system based on solar energy of the present invention.
Fig. 3 is of the present invention based on the node solar cell volt-ampere characteristic figure in the industry wireless sensor network system of solar energy.
Fig. 4 be of the present invention based in the industry wireless sensor network system of solar energy based on the dormancy awakening method flow chart of node solar cell state.
Fig. 5 be of the present invention based in the industry wireless sensor network system of solar energy based on the dormancy awakening method flow chart of radio communication channel state.
Fig. 6 be of the present invention based in the industry wireless sensor network system of solar energy based on the dormancy awakening method flow chart of solar radiation state.
Embodiment
Below by drawings and Examples, the technical scheme of the embodiment of the invention is described in further detail.
Fig. 1 is that the industry wireless sensor network system illustraton of model based on solar energy of the present invention mainly is made of external environment condition, solar collector 1, energy storage units 2 and sensor node 3.Described external environment condition comprises factors such as the wind that influences the solar radiation state, cloud layer, latitude, and described solar collector 1 comprises solar cell 11, control circuit 12, and solar cell is described sensor node 2 power supplies; Control circuit 12 is connected with described solar cell, the operating state of control system, and solar cell played additives for overcharge protection, over; Described energy storage units 2 comprises that multilayer energy accumulator 21 is as the ground floor energy controller ... N layer energy controller and charging control and commutation circuit 22, the multilayer energy accumulator is being stored by the collected energy of described solar collector for 21 li, can be by selecting the number of plies of energy storage, select the size of the capacity of described energy storage units, the number of plies is many more, and the energy that can store is big more; Charging control and commutation circuit 22 are connected with described multilayer energy accumulator, are used to control the number of plies of described multilayer energy accumulator and switch select; Described sensor node is that the core that constitutes whole system communication is used to obtain the energy of described energy storage units storage, obtain the dormancy awakening parameter, described dormancy awakening parameter and predefined threshold value are compared, determining the state of sensor node, this threshold value can be adjusted according to factors such as the performance of network and environment.Its power supply model as shown in Figure 2.
Fig. 2 is the node power supply illustraton of model of the industry wireless sensor network system based on solar energy of the present invention.Collect solar energy by solar cell device 1 as solar panel 1,, supply the energy requirement of sensor node 3 through energy storage and conversion.If comparing under the harsh conditions, when the radiation of sunlight is not enough, powered by the energy that is stored in the battery 11, its volt-ampere characteristic as shown in Figure 3.
Fig. 3 is of the present invention based on the node solar cell volt-ampere characteristic figure in the industry wireless sensor network system of solar energy, and described curve chart is more satisfactory state.Identify solar energy maximum power supply energy Pw and corresponding electric current and voltage extreme value Vm, Im among the figure, can obtain the maximum load impedance of described solar cell by Ohm's law.Control circuit in the solar collector described in Fig. 1 can reasonably be arranged in pairs or groups impedance in order to avoid the waste of energy.
In industrial wireless sensor network, introduce solar powered thought,, just be based on the plurality of advantages of solar energy and for energy-conservation and consideration environmental protection for sensor network system provides energy source.What in addition, general sensor network system was considered all is that this has not only limited the capacity of energy for node provides the common batteries power supply, cause the more frequent of node battery altering, also can cause node not have energy to supply with and quit work, destroy the network route, influence the performance of whole system.And not only make network work more stable based on solar powered wireless sensor network, and prolonged the lifetime of network, a kind of network configuration of sustainable development is provided.
The industrial sensor Radio Network System that the present invention is based on solar energy provides a kind of dormancy awakening method, this method has preestablished threshold value, wherein be provided with two threshold values, corresponding respectively node changes activity pattern and node change park mode over to from activity pattern critical value over to from park mode.And the state that relatively decides next time slot sensor node based on these three dormancy awakening parameters of solar cell state, radio channel state and solar radiation state and these threshold values.Threshold value is based on that factors such as the performance of network system and environment decide, and can dynamically adjust, based on selecting different values in solar cell state, three kinds of different dormancy awakening methods of radio channel state and solar radiation state.
Be illustrated in figure 4 as the method that the battery status that the present invention is based on solar energy carries out dormancy awakening.This method comprises:
Be illustrated in figure 5 as the method that the state value that the present invention is based on radio communication channel carries out dormancy awakening.This method comprises:
Be illustrated in figure 6 as the method that the solar radiation state carries out dormancy awakening that the present invention is based on.This method comprises:
Three kinds of mechanism of the dormancy awakening of above-mentioned network effectively provide power save mode for described system.And, angle is from many aspects considered dormancy awakening method, as described based on solar cell state, radio channel state and solar radiation state etc., consider balance from many aspects, consider the dormancy awakening method of described solar energy radio sensor network system.
And the present invention is based on above-mentioned three kinds of dormancy awakening methods, take all factors into consideration the various aspects of performance of the industry wireless sensor network system of described solar energy, as channel status, the solar cell state, the state of solar radiation etc., can set in advance channel status according to certain override mechanism is that limit priority carries out dormancy awakening, next is the solar cell state, be the state of solar radiation at last, but the present invention is not limited to this, the comprehensive channel state, the solar cell state, the state of solar radiation is chosen dormancy awakening method, for system provides better energy-conservation guarantee.
To state three comparison condition be that current sensor node state is dormancy when sensor node engraves at a time, and the state of the channel status of this moment, solar cell state, solar radiation all satisfies when being higher than threshold value 1, the dormancy awakening method of node is based on the fusion of described several states, for depending on the comprehensive dormancy awakening method that above-mentioned described override mechanism is carried out; When this occasion was somebody's turn to do the method that only satisfies constantly wherein, the dormancy awakening method of node was based on described a single state.
In the practical application, can be earlier the node state of the industry wireless sensor network system of this solar energy be carried out modeling (as using multidimensional discrete time Markov chain), with capacity, the channel status of radio communication and the state of solar radiation etc. of expression solar cell.A kind of modeling method that provides is as follows, take the linear battery model of relaxation effect to represent solar cell, adopt finite state Markov model representation radio communication channel, catch the correlated channels degenerative process, the solar radiation process is with a random process and in conjunction with concrete parametric representations such as wind speed and directions.
It should be noted last that, above embodiment is only unrestricted in order to the technical scheme of the explanation embodiment of the invention, although the embodiment of the invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical scheme of the embodiment of the invention, and not break away from the spirit and scope of the invention process technical scheme.
Claims (10)
1. industry wireless sensor network system based on solar energy is characterized in that comprising:
Solar collector is used to collect solar energy;
Energy storage units is connected with described solar collector, is used for solar energy storage that described solar collector is collected and the energy that storage is provided to sensor node;
Sensor node, be connected with described energy storage units,, obtain relevant dormancy awakening parameter according to the performance of network system by the energy power supply of described energy storage units storage, described dormancy awakening parameter and predefined threshold value are compared, to determine the state of sensor node.
2. the industry wireless sensor network system based on solar energy according to claim 1 is characterized in that described solar collector comprises:
Solar cell is used to described sensor node power supply;
Control circuit is connected with described solar cell, is used to control the operating state of described system, and solar cell is carried out additives for overcharge protection, over.
3. the industry wireless sensor network system based on solar energy according to claim 2 is characterized in that described energy storage units comprises:
The multilayer energy accumulator, the energy that storage is collected by described solar collector can be selected the size of energy storage capacity by selecting the number of plies of energy storage, and the number of plies is many more, and the energy that can store is big more;
Charging control and commutation circuit are connected with described multilayer energy accumulator, are used to control the number of plies of described multilayer energy accumulator and switch select.
4. dormancy awakening method is characterized in that comprising:
Step 1, sensor node obtains relevant dormancy awakening parameter according to the performance of network system;
Step 2 is judged the current state of described sensor node;
Step 3 compares described dormancy awakening parameter and predefined threshold value, according to described current state, to determine the operating state of next time slot of sensor node.
5. dormancy awakening method according to claim 4 when described dormancy awakening parameter is the solar cell state value, is characterized in that, described predefined threshold value is for changing the critical value of activity pattern over to from park mode; Described step 3 is specially: the size of judging described solar cell state value, if be higher than the described critical value that changes activity pattern from park mode over to, then node changes activity pattern over to from park mode, if be lower than the described critical value that changes activity pattern from park mode over to, node keeps park mode, and continues to obtain the solar cell state value at next time slot.
6. dormancy awakening method according to claim 4 when described dormancy awakening parameter is the state value of radio communication channel, is characterized in that, described predefined threshold value is for changing the critical value of activity pattern over to from park mode; Described step 3 is specially: the state value size of judging the radio communication channel of described prediction, if be higher than the described critical value that changes activity pattern from park mode over to, then node changes activity pattern over to from park mode, if be lower than described predefined threshold value 4, node then keeps park mode, and predicts the state value of next slotted radio channel.
7. dormancy awakening method according to claim 4 when described dormancy awakening parameter is the state value of solar radiation, is characterized in that, described predefined threshold value is for changing the critical value of activity pattern over to from park mode; Described step 3 is specially: the state value size of judging described solar radiation, if be higher than the described critical value that changes activity pattern from park mode over to, then node changes activity pattern over to from park mode, if be lower than the described critical value that changes activity pattern from park mode over to, node then keeps park mode, continues to read the state value of solar radiation at next time slot.
8. dormancy awakening method according to claim 4 is characterized in that described predefined threshold value is node changes park mode over to from activity pattern a critical value; When described dormancy awakening parameter is the solar cell state value, described step 3 is specially: judge whether described solar cell state value is lower than the described critical value that changes park mode from activity pattern over to, in this way, then change park mode over to from activity pattern, as be higher than, then keep activity pattern and obtain the solar cell state value at next time slot.
9. dormancy awakening method according to claim 4 is characterized in that, described predefined threshold value is node changes park mode over to from activity pattern a critical value; When described dormancy awakening parameter is the state value of radio communication channel, described step 3 is specially: whether the state value of judging described radio communication channel is lower than the described critical value that changes park mode from activity pattern over to, in this way, then change activity pattern over to from park mode; Otherwise, keep activity pattern continues to read radio communication channel at next time slot state value.
10. dormancy awakening method according to claim 4 is characterized in that, described predefined threshold value is node changes park mode over to from activity pattern a critical value; When described dormancy awakening parameter was the state value of solar radiation, described step 3 was specially: whether the state value of judging described solar radiation is lower than describedly changes the critical value of park mode over to from activity pattern, in this way, then changes activity pattern over to from park mode; Otherwise, keep activity pattern continues to read solar radiation at next time slot state value.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101350775B (en) * | 2008-09-10 | 2010-09-22 | 北京航空航天大学 | Control method for shrouding wireless sensor network using node boundary |
| WO2012031542A1 (en) * | 2010-09-06 | 2012-03-15 | 中国移动通信集团上海有限公司 | Method, system, and apparatus for establishing communication for wireless sensor network |
| CN103167519A (en) * | 2011-12-16 | 2013-06-19 | 江南大学 | High-efficiency and energy-saving visual sensor network target covering algorithm |
| CN108932765A (en) * | 2017-05-24 | 2018-12-04 | 北京卡多宝信息技术有限公司 | A kind of smart lock and its control method, intelligent lock system |
| CN109199327A (en) * | 2017-06-30 | 2019-01-15 | 三星电子株式会社 | Self-powered wearable device for the monitoring of continuous biological characteristic |
| CN111207864A (en) * | 2020-03-15 | 2020-05-29 | 成都智创利源科技有限公司 | Integrated solar wireless power indicator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101350775B (en) * | 2008-09-10 | 2010-09-22 | 北京航空航天大学 | Control method for shrouding wireless sensor network using node boundary |
| WO2012031542A1 (en) * | 2010-09-06 | 2012-03-15 | 中国移动通信集团上海有限公司 | Method, system, and apparatus for establishing communication for wireless sensor network |
| CN103167519A (en) * | 2011-12-16 | 2013-06-19 | 江南大学 | High-efficiency and energy-saving visual sensor network target covering algorithm |
| CN108932765A (en) * | 2017-05-24 | 2018-12-04 | 北京卡多宝信息技术有限公司 | A kind of smart lock and its control method, intelligent lock system |
| CN109199327A (en) * | 2017-06-30 | 2019-01-15 | 三星电子株式会社 | Self-powered wearable device for the monitoring of continuous biological characteristic |
| US10959626B2 (en) | 2017-06-30 | 2021-03-30 | Samsung Electronics Co., Ltd. | Self-powered wearable for continuous biometrics monitoring |
| CN111207864A (en) * | 2020-03-15 | 2020-05-29 | 成都智创利源科技有限公司 | Integrated solar wireless power indicator |
| CN111220250A (en) * | 2020-03-31 | 2020-06-02 | 芯海科技（深圳）股份有限公司 | Electronic scale, and scale pressing detection method and storage medium thereof |
| CN113795007A (en) * | 2021-09-14 | 2021-12-14 | 华北电力大学 | Wireless sensor for measuring transformer vibration signal and low-power-consumption working method |
| CN113795007B (en) * | 2021-09-14 | 2023-10-13 | 华北电力大学 | Wireless sensor for measuring vibration signal of transformer and low-power-consumption working method |
| CN114826401A (en) * | 2022-03-31 | 2022-07-29 | 华南理工大学 | Visible light energy-carrying communication method, system and device based on solar cell panel |
| CN114826401B (en) * | 2022-03-31 | 2023-10-31 | 华南理工大学 | Visible light energy-carrying communication method, system and device based on solar panel |
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