CN102547938A - Router, wireless sensor network and method for monitoring terminal nodes - Google Patents
Router, wireless sensor network and method for monitoring terminal nodes Download PDFInfo
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Abstract
The invention relates to the field of wireless sensor networks, in particular to a router, a wireless sensor network and a method for monitoring terminal nodes. The router is applied in the wireless sensor network, and comprises a routing module, an awakening module and a nonvolatile memory; the awakening module is connected with the routing module, and is used for periodically awakening the routing module which is in an asleep state; and the nonvolatile memory is connected with the routing module, and is used for storing the networking topologic information of the wireless sensor network in which the router is positioned and the information of the superior and subordinate nodes of the router, and the information is called after the routing module is awakened.
Description
Technical field
The present invention relates to the radio sensing network field, relate in particular to the method for a kind of router, radio sensing network and monitor terminal node.
Background technology
Along with the development of wireless communication technology and sensing technology, the application scenario of radio sensing network is more and more general.ZigBee is a kind of communication protocol that is mainly used in the radio sensing network; Can be operated on 2.4GHz (whole world is popular), 868MHz (Europe is popular) and 3 frequency ranges of 915 MHz (U.S. is popular); The transmission rate that has the highest 250kbit/s, 20kbit/s and 40kbit/s respectively; Its transmission range but can continue to increase in the scope of 10-75m.
As a kind of wireless communication technology, be low-power consumption and low cost based on the main feature of the radio sensing network of ZigBee agreement.Aspect power consumption, because the transmission rate of ZigBee agreement is low, transmitting power is merely 1mW, and has adopted park mode, so power consumption is very low.It is estimated that only depend on No. 5 batteries of two joints just can keep the service time that reaches about 6 months to 2 years based on the terminal equipment of the radio sensing network of ZigBee agreement, this is that other wireless device is too far behind to catch up.Aspect cost, the initial cost of ZigBee module estimate to drop to 1.5 to 2.5 dollars soon, and the ZigBee agreement is exempted from patent fee about 6 dollars.Low-cost also is a The key factor for the radio sensing network based on the ZigBee agreement.
In the above-mentioned description about the ZigBee agreement; Most critical be exactly " low-power consumption "; This characteristic has also influenced the node cost based on the radio sensing network of ZigBee agreement to a great extent, therefore we can say that the characteristic of ZigBee protocol technology most critical is exactly low energy consumption.But when actual this technology of employing is carried out networking; When only simplifying functional node/global function node (RFD/FFD) as the terminal leaf node; Can reach average transmit power is the low energy consumption degree of 1mW; And as router (Router) or telegon (Coordinator), average power consumption in use will reach about 200 ~ 500mW.And above-mentioned average power consumption also only is the power consumption of ZigBee protocol chip itself, also will add the power consumption of peripheral circuit, and its total power consumption also will further increase.Actual measurement shows, adopts the ZigBee router node of common disposable lithium cell power supply can only continuous firing 2 ~ 3 days.
The scheme that solves power problems in the prior art mainly comprises: adopt wired power supply; The Micropelt company of TI company and Germany releases the ZigBee protocol node of new forms of energy jointly, and this node adopts the thermoelectric generator of Micropelt company power supply to be provided for the router of the ZigBee agreement of TI company; Adopt solar storage battery to give radio sensing network power supply based on the ZigBee agreement; Adopt the extrahigh energy special cells to give radio sensing network power supply based on the ZigBee agreement.
Adopt the shortcoming of wired power supply to be to make radio sensing network to become cable network, so just can't embody the flexible advantage of radio sensing network based on the ZigBee agreement.Based on distance between the node of the radio sensing network of ZigBee agreement generally at several meters ~ tens meters; If all-router and telegon all will adopt wired power supply; The power line of Miru's cobweb will make the radio sensing network based on the ZigBee agreement become disgusting product so, is difficult to accepted by the user.
The ZigBee protocol node that the Micropelt company of TI company and Germany releases new forms of energy jointly adopts the thermoelectric generator of Micropelt company power supply to be provided for the ZigBee agreement router of TI company; The shortcoming of this skill solution is that novel thermoelectric generator costs an arm and a leg, and will write off fully based on the radio sensing network of ZigBee agreement advantage with low cost.In addition, thermoelectric generator only is applicable to the more violent environment that colds and heat succeed each other, and thermoelectric generator can't be used in most application scenarios.
Adopt solar storage battery to be for the shortcoming of the technical scheme of supplying power based on the radio sensing network of ZigBee agreement; The price of solar panel and storage battery is considerably beyond the price based on the radio sensing network node of ZigBee agreement, and the plurality of applications occasion can't guarantee enough solar light irradiations.
And adopting the extrahigh energy special cells to be that extrahigh energy special cells price is very expensive for the shortcoming of supplying power based on the radio sensing network of ZigBee agreement, a field credit union that has only only a few to disregard cost uses this solution.
Therefore, the technical scheme of a kind of solution of cheapness based on the radio sensing network power supply of ZigBee agreement can be provided, and not destroy the flexible advantage of radio sensing network, be problem demanding prompt solution in the prior art.
Summary of the invention
Technical problem to be solved by this invention is the technical scheme of a kind of solution of cheapness based on the radio sensing network power supply of ZigBee agreement to be provided, and not destroy the flexible advantage of radio sensing network.
In order to address the above problem, the invention provides a kind of router, be applied in the radio sensing network, comprise a routing module, a wake module and a nonvolatile memory; Said wake module is connected to routing module, is used for periodically waking up the routing module that is in resting state; Said nonvolatile memory is connected with routing module, is used for the networking topology information of the residing radio sensing network of storage router, the higher level and the downstream site information of this router, and above-mentioned information supplies routing module after being waken up, to call.
As optional technical scheme, further comprise a timer, said timer is connected with wake module, is used to control wake module and periodically wakes routing module up.
As optional technical scheme, said timer further is connected with routing module, is used for receiving the clock alignment signal that comes from the residing radio sensing network of router.
As optional technical scheme; Further comprise network reorganization control module, said network reorganization control module is connected with routing module with wake module, is used for when the number of times of wake module initiation wake command reaches a preset value; Sending network reorganization orders to routing module; Initiate the primary network paging, whether having failure node in the higher level that detects self and the downstream site, and regenerate network topology existing under the situation of failure node.
The present invention further provides a kind of radio sensing network, comprises at least one terminal, at least one router and at least one telegon, comprises an above-mentioned router in the said router at least.
As optional technical scheme; Further comprise first group of router; In said first group of router each is above-mentioned router; In said first group of router each includes a timer, be used to control wake module and periodically wake routing module up, and all timers in said first group of router is provided with identical wake-up period and wakeup time point.
As optional technical scheme; Further comprise second group of router; In said second group of router each is above-mentioned router; In said second group of router each includes a timer; Be used to control wake module and periodically wake routing module up, all timers in said second group of router are provided with identical wake-up period and wakeup time point, and the wake-up period of the timer in the timer in said first group of router and the second group of router is different.
The present invention further provides a kind of method that adopts the monitor terminal node of above-mentioned router, comprises the steps: that the routing module of (a) router is waken up by wake module; (b) routing module is transferred the networking topology information of residing radio sensing network, the higher level and the downstream site information of this router from nonvolatile memory; (c) routing module detects the terminal node positional information in the router coverage, and accepts the reporting information of downstream site; (d) routing module is reported the node to the higher level to the reporting information of above-mentioned terminal node positional information and downstream site according to the information of from nonvolatile memory, transferring; (e) routing module gets into resting state again.
As optional technical scheme, in the said step (a), said wake module is controlled by a timer, periodically wakes routing module up.In step (e) before, comprise that further said routing module requires a clock calibrating signal to the radio sensing network at router place, and the step of calibration timer.
As optional technical scheme; In step (e) before, further comprise radio sensing network request one wakeup time of said routing module, and be stored to the step of wake module to the router place; In the said step (a), wake module is waken routing module up according to this wakeup time.
As optional technical scheme; Said router further comprises network reorganization control module; Said network reorganization control module is connected with routing module with wake module, and said method further comprises the steps: the network reorganization order initiation ICQ of the network reorganization control module transmission that (f1) routing module basis receives in step (b) with (c); Detect in higher level and the downstream site of this router self and whether have failure node; If there is failure node, execution in step (f2) then, otherwise execution in step (c); (f2) regenerate network topology.
As optional technical scheme; Said step (a) and (b) between further comprise the steps: to get into first quiet period immediately after (g1) routing module is waken up by wake module; In said first quiet period; Routing module is only accepted data and is not sent data, treat that first quiet period finishes after, continue execution in step (b).
As optional technical scheme; Said step (d) and (e) between comprise the steps: that further (g2) routing module at first gets into second quiet period before dormancy; In said second quiet period; Routing module is only accepted data and is not sent data, treat that second quiet period finishes after, continue execution in step (e).
The invention has the advantages that; Having adopted periodically, the router of dormancy constitutes the wireless sense network network; Adopt wake module to wake routing module up; And adopt the nonvolatile memory holds network topological information, make router come energy efficient, and after being waken up, can devote oneself to work rapidly through dormancy.Owing to mainly be that wake module and nonvolatile memory are better,, increased life cycle so significantly practiced thrift the power consumption of router under resting state.
Further waken up at synchronization, and, just make complete group of router be operated in orderly synchronous regime, avoided loss of data in the synchronization dormancy through the router on the same group in the Control Network.
Further through in the Control Network not on the same group router constantly waken up in difference, avoid the power down simultaneously of the whole network router, avoid loss of data.
Further be provided with and only accept and do not send " silence period along " of data after waking up with before the dormancy, can avoid waiting after the startup that reason causes more slowly because of clock jitter, course of action or moment before the dormancy because router differs from one another to go on foot loss of data takes place owing to indivedual router nodes at router.
Description of drawings
It shown in the accompanying drawing 1 network architecture diagram of radio sensing network of the present invention and the said radio sensing network of router embodiment.
Accompanying drawing 2 is cut-away views of first router shown in the accompanying drawing 1.
It shown in the accompanying drawing 3 the implementation step sketch map of the method embodiment of monitor terminal node of the present invention.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to the method for router provided by the invention, radio sensing network and monitor terminal node.
At first provide the embodiment of radio sensing network according to the invention, comprised router of the present invention in this embodiment simultaneously.
Be the network architecture diagram of the said radio sensing network of this embodiment shown in the accompanying drawing 1, comprise first router 11, secondary route device 12, telegon 10 and a plurality of terminal 19.In other execution mode, can further include more router, and router can be provided with step by step also, the information of following level router is reported supreme level router, finally gathers to telegon.The router number of wireless sense network is one at least.The wireless signal institute region covered of first router 11 and secondary route device 12 all-routers such as grade is the guarded region of radio sensing network, and terminal 19 is a sensor node, and the number at terminal 19 is one at least.All terminals 19 all with the router communication that covers self zone, the information of collecting is reported to this router, and finally reports to telegon 10.The data message of transmission through network all has numbering, for example can distinguish each message with " 16bit node address+16bit message numbering cycle ", adds the 32bit timestamp.On the basis of the above message structure is done simple content additions and deletions, must be regarded as the obvious distortion that the present invention discloses technology.And can add the mistake retransmission mechanism and guarantee that the whole network data message can not lose or make mistakes.
Accompanying drawing 2 is cut-away views of first router 11 shown in the accompanying drawing 1, comprises routing module 211, wake module 212, nonvolatile memory 213, timer 2 14 and network reorganization control module 215.Wherein timer 2 14 is an optional components with network reorganization control module 215.Also should have a battery (not shown) in said first router 11 is above all module for power supply.Said wake module 212 is connected with routing module 211, and said timer 2 14 is connected with wake module 212, and timer 2 14 further is connected with routing module 211; Said nonvolatile memory 213 is connected with routing module 211; Said network reorganization control module 215 is connected with routing module 211 with wake module 212.
The structure of secondary route device 12 is identical with first router 11, repeats no more here.
Said wake module 212 is connected to routing module 211, is used for periodically waking up the routing module 211 that is in resting state.The initiation of this wake command can be from radio sensing network, to obtain a wakeup time before the each dormancy of routing module and be stored in the wake module 212, also can be timer 2 14 initiations through being connected with wake module 212.Said timer 2 14 is connected with wake module 212, is used to control wake module 212 and periodically wakes routing module 211 up.The wake-up period of this timer 2 14 can be provided with by the user in advance, also can be further to be connected with routing module 211 through timer 2 14, and be obtained from radio sensing network.Timer 2 14 is connected with routing module 211 can also be used for receiving the clock alignment signal that comes from router one 1 residing radio sensing network.
For the clock alignment signal, if comprised the ZigBee chip that possesses the real-time clock waking-up function in the routing module 211, this chip with the telegon clock as standard clock source.Then when network is set up, issue clock and give each router node and terminal leaf node, and whenever after one period long period, recalibrate; For the ZigBee chip that does not possess the real-time clock waking-up function, then can be when each routing module 211 change operating state over to by dormancy, perhaps every clock alignment that carries out at a distance from several times.
In engineering practice; For for the radio sensing network of Zigbee agreement; Employed ZigBee chip of router node and the employed ZigBee chip of terminal leaf node are identical; All has SLP (SLeeP, the producer's chip pin name that has is different, but function is identical) pin.Can make simple change to the hardware circuit of router, get into dormancy or withdraw from dormancy through GPIO pin Control Node able to programme, and control dormancy/operating time ratio (being duty ratio again) by software programming.Can find out that from top narration the technical scheme of adding wake module 212 is very little to the change of existing router on hardware and software, therefore be easy to operation.
In this embodiment, first router 11 belongs to first group of router, and first group of router can also further comprise a plurality of routers identical with first router 11.Each includes a timer first group of router, be used to control wake module and periodically wake routing module up, and all timers in said first group of router is provided with identical wake-up period and wakeup time point.Secondary route device 12 belongs to second group of router, and the characteristics of second group of router are identical with first group, repeat no more.All timers of router are provided with identical wake-up period and wakeup time point on the same group; Can guarantee that all routers open and get into operating state at synchronization; And, so just make full group equipment be operated in orderly synchronous regime in synchronization entering dormancy, avoid loss of data.
In this embodiment, first group of router at first router 11 place is provided with different wake-up periods with timer in second group of router that secondary route device 12 belongs to.Certainly, in other embodiment, also can further comprise the configuration of more groups.The router that can guarantee different groups like this can run out of all electric energy in different time.First group of every unlatching 100ms for example, dormancy 9900ms; Second group of every unlatching 100ms, dormancy 99900ms; The 3rd group of every unlatching 100ms, dormancy 999900ms.So, the staff is when changing battery to set of router, and the router of other groups still can operate as normal, and whole network only is that accuracy descends to some extent, and can not take place whole network to change battery simultaneously and situation about can't work.
The radio sensing network of the router of above-mentioned employing periodic wakeup work is particularly useful for the slow or low occasion of information updating frequency of terminal node translational speed; For example monitor the giant panda in the wildlife reserve, perhaps monitor the situation such as geology, weather and hydrology variation in somewhere.Usually only in a certain zone, slowly move for wild animals such as giant pandas, people only need whenever to get final product at a distance from several hrs even the state that obtained once them in one day; And for information such as geology, weather and hydrology variations, people maybe every day, jede Woche even gathered primary information in every month it is enough.For above-mentioned situation and analogue, the router that adopts periodic wakeup work is saves energy significantly, thereby the operating time of obviously improving router has been avoided the trouble of staff's frequent change battery.
All-router in the said radio sensing network can all be arranged to the router of above-mentioned periodic wakeup work, also can partly be arranged to the router of the above-mentioned type.For being placed in the occasion that is easy to change battery; Perhaps high, the router that moves frequent occasion of the terminal node frequency of occurrences; Also can adopt the router of traditional continuous operation, and only at the router that is difficult for changing the occasion of battery and the occasion layout periodic wakeup work that terminal node moves slowly or the frequency of occurrences is low.The occasion of difficult replacing battery described here for example can be the outer wall of skyscraper, the depths in forest valley or the HTHP place of manufacturing shop etc.; Described terminal node moves slowly or the low occasion of the frequency of occurrences for example can be the outermost of monitored wildlife reserve; Monitored animal; For example panda seldom can come across this.
Said nonvolatile memory 213 is connected with routing module 211, is used for the networking topology information of storage router 11 residing radio sensing networks, the higher level and the downstream site information of router one 1, and above-mentioned information supplies routing module 211 after being waken up, to call.Networking between the router is numerous and diverse work during radio sensing network makes up; For complex network; This process needs several minutes time usually, and router need carry out complicated network topology calculating continuously in the networking process, and power consumption is huge.After router is restarted at every turn, all will carry out networking, the router one 1 of this embodiment has further disposed nonvolatile memory 213 and has come storage networking information.After router one 1 was waken up, only need read in these information both can carry out the normal transmitting-receiving of data, and all carried out networking after needn't waking up at every turn.
In practical application, if control the router entering and withdraw from dormancy through the GPIO pin simply, in a single day router node gets into park mode so, and then the information in the internal memory all can be lost.After router node withdraws from dormancy entering operating state; The thing that at first will do is rebuild the ZigBee network topology exactly, though this process can be accomplished by the ZigBee agreement automatically, this process will expend short then hundreds of millisecond; Long then several minutes clock times; No matter be terminal leaf node or router node, coordinator node during this period of time, all need frequent communication, power consumption is very huge.And nonvolatile memory 213 only need simply be changed hardware circuit, and an external low capacity low energy consumption non-volatile memory chip gets final product.On the software view; Need in the ZigBee agreement, carry out simple modification; Router node all is stored in networking topology, superior node information, downstream site information etc. in the nonvolatile memory 213 before getting into dormancy, and from nonvolatile memory 213, takes out above-mentioned information immediately when withdrawing from dormancy and loading is advanced in the ZigBee protocol stack.Can find out that from top narration the technical scheme of adding nonvolatile memory 213 is very little to the change of existing router on hardware and software, therefore be easy to operation.
The effect of nonvolatile memory 213 is that also routing module 211 can keep in information to be sent to the nonvolatile memory 213.This guaranteed this routing module 211 by the work slice after waking up in, the data that can the data of failing before the dormancy to have sent, temporary transient desynchronizing state can't be sent and the storage that temporarily can't send from net state can not lost in nonvolatile memory 213.
Said network reorganization control module 215 is connected with routing module 211 with wake module 212; Be used for when the number of times that wake module 212 is initiated wake command reaches a preset value; Sending network reorganization and order to routing module 211, initiate the primary network paging, can be simple " hello " paging of the whole network; Whether having failure node in the higher level that detects routing module 211 self and the downstream site, and regenerate network topology existing under the situation of failure node.Said preset value can the person of being to use arrange that router one 1 is before predefined.According to the process of the distribution building network of effective router node topology is the basic function of radio sensing network such as Zigbee protocol network, repeats no more here.Network reorganization control module 215 can further be avoided owing to routing module is caused in time finding router failure by periodic wakeup, and then avoids the situation generation of breaking down and causing network paralysis owing to certain or some routers in the network.
Next provide the embodiment of the method for monitor terminal node according to the invention.
Be the implementation step sketch map of this embodiment shown in the accompanying drawing 3, comprise: step S300, the routing module of router is waken up by wake module; Step S310 gets into first quiet period immediately after routing module wakes up; Step S320, routing module transfer the networking topology information of residing radio sensing network, the higher level and the downstream site information of this router from nonvolatile memory; Step S330, routing module detects the terminal node positional information in the router coverage, and accepts the reporting information of downstream site; Step S340, routing module is reported the node to the higher level to the reporting information of above-mentioned terminal node positional information and downstream site according to the information of from nonvolatile memory, transferring; Step S350, routing module get into second quiet period; Step S360, routing module gets into resting state immediately again after second quiet period finishes.
Next please continue above-mentioned each step to be elaborated with reference to accompanying drawing 1 and network and the router shown in the accompanying drawing 2.
Among the step S300, the routing module of router is waken up by wake module.It is to realize that the arouse machine processed of the wake module of this step can have multiple mode.For example, said wake module can be controlled by a timer, periodically wakes routing module up; Or any time before the each dormancy of routing module from radio sensing network, obtain a wakeup time and be stored in the wake module, and control according to this wakeup time and to wake routing module up.In the execution mode that adopts timer, said routing module can also require a clock calibrating signal at the radio sensing network of any time to the router place that is under the wake-up states, and the calibration timer.
Among the step S310, get into first quiet period after routing module wakes up immediately, in said first quiet period, routing module is only accepted data and is not sent data.This step is an optional step.Use " silence period edge " can avoid information dropout.That that forwards operating state to from dormancy constantly, whole network equipment is not sent data and is received only data, after the several milliseconds of times of mourning in silence, begins just that normal data are sent and reception.This step has guaranteed that indivedual router nodes wait the firm startup that reason causes more slowly because of clock jitter, start-up course moment is owing to router step that differs from one another, loss of data took place.
Step S320, routing module transfer the networking topology information of residing radio sensing network, the higher level and the downstream site information of this router from nonvolatile memory.Networking between the router is numerous and diverse work during radio sensing network makes up; For complex network; This process needs several minutes time usually, and router need carry out complicated network topology calculating continuously in the networking process, and power consumption is huge.After router is restarted at every turn, all will carry out networking, the purpose of carrying out this step is that after router was waken up, only need read in these information both can carry out the normal transmitting-receiving of data, and all carried out networking after needn't waking up at every turn.
Since routing module by periodic wakeup after of short duration work, therefore be easy to router failure occur and situation about can't in time find.So network reorganization control module can also be set in router, before getting into normal operating conditions, can also further carry out the step of a network measuring.This step is all carried out after also needn't waking up at every turn, also can be when the number of times of wake module initiation wake command reaches a preset value, initiates the primary network paging by network reorganization control module.ICQ is initiated in the network reorganization order that routing module sends according to the network that receives reorganization control module, detects in higher level and the downstream site of this router self whether have failure node, if there is failure node, then regenerates network topology.If the node of not finding to have inefficacy, the step below then continuing to carry out.Regenerate after the network topology, need higher level and the downstream site information etc. of networking topology information, this router that will new radio sensing network to store nonvolatile memory into and replace information before.
Step S330, routing module detects the terminal node positional information in the router coverage, and accepts the reporting information of downstream site; Step S340, routing module is reported the node to the higher level to the reporting information of above-mentioned terminal node positional information and downstream site according to the information of from nonvolatile memory, transferring.The mode of operation of the router-module of above-mentioned two steps is identical with router mode of operation in the common radio sensing network, and the operating state of the radio sensing network in this step and wireless sense network network of the prior art are basic identical.
Step S350, routing module get into second quiet period, and in said second quiet period, routing module is only accepted data and do not sent data.This step is an optional step.As explanation, use " silence period edge " can avoid information dropout to step S310.That that forwards dormancy to from operating state constantly, whole network equipment is not sent data and is received only data, after the several milliseconds of times of mourning in silence, just begins to get into dormancy.This step guaranteed indivedual router nodes because of clock jitter, get into sleep procedure and wait the moment before the entering dormancy that reason causes loss of data to take place more slowly because router differs from one another to go on foot.
Step S360, routing module gets into resting state immediately again after second quiet period finishes.Routing module under the resting state just keeps a thread of communicating by letter with wake module, so under resting state, the power consumption of routing module is extremely low.When the routing module of resting state is worked next time, still carry out above-mentioned circulation.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (14)
1. a router is applied to it is characterized in that in the radio sensing network, comprises a routing module, a wake module and a nonvolatile memory;
Said wake module is connected to routing module, is used for periodically waking up the routing module that is in resting state;
Said nonvolatile memory is connected with routing module, is used for the networking topology information of the residing radio sensing network of storage router, the higher level and the downstream site information of this router, and above-mentioned information supplies routing module after being waken up, to call.
2. router according to claim 1 is characterized in that, further comprises a timer, and said timer is connected with wake module, is used to control wake module and periodically wakes routing module up.
3. router according to claim 2 is characterized in that said timer further is connected with routing module, is used for receiving the clock alignment signal that comes from the residing radio sensing network of router.
4. router according to claim 1 is characterized in that, further comprises network reorganization control module; Said network reorganization control module is connected with routing module with wake module; Be used for when the number of times of wake module initiation wake command reaches a preset value, sending network reorganization and ordering, initiate the primary network paging to routing module; Whether having failure node in the higher level that detects self and the downstream site, and regenerate network topology existing under the situation of failure node.
5. a radio sensing network comprises at least one terminal, at least one router and at least one telegon, it is characterized in that, comprises a described router of claim 1 in the said router at least.
6. radio sensing network according to claim 5; It is characterized in that; Further comprise first group of router, each in said first group of router is the described router of claim 1, and each in said first group of router includes a timer; Be used to control wake module and periodically wake routing module up, and all timers in said first group of router are provided with identical wake-up period and wakeup time point.
7. radio sensing network according to claim 5; It is characterized in that; Further comprise second group of router; In said second group of router each is the described router of claim 1, and each in said second group of router includes a timer, is used to control wake module and periodically wakes routing module up; All timers in said second group of router are provided with identical wake-up period and wakeup time point, and the wake-up period of the timer in the timer in said first group of router and the second group of router is different.
8. a method that adopts the monitor terminal node of the described router of claim 1 is characterized in that, comprises the steps:
(a) routing module of router is waken up by wake module;
(b) routing module is transferred the networking topology information of residing radio sensing network, the higher level and the downstream site information of this router from nonvolatile memory;
(c) routing module detects the terminal node positional information in the router coverage, and accepts the reporting information of downstream site;
(d) routing module is reported the node to the higher level to the reporting information of above-mentioned terminal node positional information and downstream site according to the information of from nonvolatile memory, transferring;
(e) routing module gets into resting state again.
9. the method for monitor terminal node according to claim 8 is characterized in that, in the said step (a), said wake module is controlled by a timer, periodically wakes routing module up.
10. the method for monitor terminal node according to claim 9 is characterized in that, in step (e) before, comprises that further said routing module requires a clock calibrating signal to the radio sensing network at router place, and the step of calibration timer.
11. the method for monitor terminal node according to claim 8; It is characterized in that; In step (e) before, further comprise radio sensing network request one wakeup time of said routing module, and be stored to the step of wake module to the router place; In the said step (a), wake module is waken routing module up according to this wakeup time.
12. the method for monitor terminal node according to claim 8; It is characterized in that; Said router further comprises network reorganization control module; Said network reorganization control module is connected with routing module with wake module, and said method further comprises the steps: in step (b) with (c)
(f1) routing module is initiated ICQ according to the network reorganization order of the network reorganization control module transmission that receives; Detect in higher level and the downstream site of this router self and whether have failure node; If there is failure node, execution in step (f2) then, otherwise execution in step (c);
(f2) regenerate network topology.
13. the method for monitor terminal node according to claim 8 is characterized in that, said step (a) and (b) between further comprise the steps:
(g1) routing module gets into first quiet period after being waken up by wake module immediately, and in said first quiet period, routing module is only accepted data and do not sent data, treat that first quiet period finishes after, continue execution in step (b).
14. the method for monitor terminal node according to claim 8 is characterized in that, said step (d) and (e) between further comprise the steps:
(g2) routing module at first gets into second quiet period before dormancy, and in said second quiet period, routing module is only accepted data and do not sent data, treat that second quiet period finishes after, continue execution in step (e).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636183A (en) * | 2016-02-23 | 2016-06-01 | 重庆邮电大学 | Energy-saving dormancy awakening method based on ZigBee technology |
| CN106658650A (en) * | 2016-12-06 | 2017-05-10 | 上海斐讯数据通信技术有限公司 | Method and device for maintaining routing information based on ZigBee network |
| CN109413164A (en) * | 2018-10-09 | 2019-03-01 | 郑州云海信息技术有限公司 | A kind of access service recovery method, device, equipment and readable storage medium storing program for executing |
| CN110072272A (en) * | 2018-01-24 | 2019-07-30 | 高新兴物联科技有限公司 | A kind of method of power consumption control, wireless terminal and cordless communication network equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425917A (en) * | 2007-10-29 | 2009-05-06 | 吉林市曼博科技有限公司 | Sleep scheduling method for wireless sensor network |
| US20100290379A1 (en) * | 2009-05-13 | 2010-11-18 | Snu R&Db Foundation | Method for wireless multi-hop network |
| CN102083162A (en) * | 2011-01-21 | 2011-06-01 | 河海大学常州校区 | Greedy multi-path routing method of wireless multimedia sensor network based on QoS (Quality of Service) |
-
2011
- 2011-12-29 CN CN201110449516.0A patent/CN102547938B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425917A (en) * | 2007-10-29 | 2009-05-06 | 吉林市曼博科技有限公司 | Sleep scheduling method for wireless sensor network |
| US20100290379A1 (en) * | 2009-05-13 | 2010-11-18 | Snu R&Db Foundation | Method for wireless multi-hop network |
| CN102083162A (en) * | 2011-01-21 | 2011-06-01 | 河海大学常州校区 | Greedy multi-path routing method of wireless multimedia sensor network based on QoS (Quality of Service) |
Non-Patent Citations (2)
| Title |
|---|
| 李群等: "无线传感器网络低占空比MAC协议研究", 《单片机与嵌入式系统应用》, no. 7, 31 December 2008 (2008-12-31) * |
| 石军锋: "无线传感网络动态休眠通信协议研究", 《中国优秀硕士学位论文全文数据库信息科技辑》, no. 6, 15 June 2009 (2009-06-15) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636183A (en) * | 2016-02-23 | 2016-06-01 | 重庆邮电大学 | Energy-saving dormancy awakening method based on ZigBee technology |
| CN106658650A (en) * | 2016-12-06 | 2017-05-10 | 上海斐讯数据通信技术有限公司 | Method and device for maintaining routing information based on ZigBee network |
| CN106658650B (en) * | 2016-12-06 | 2021-01-08 | 台州市吉吉知识产权运营有限公司 | Routing information maintenance method and device based on ZigBee network |
| CN110072272A (en) * | 2018-01-24 | 2019-07-30 | 高新兴物联科技有限公司 | A kind of method of power consumption control, wireless terminal and cordless communication network equipment |
| CN109413164A (en) * | 2018-10-09 | 2019-03-01 | 郑州云海信息技术有限公司 | A kind of access service recovery method, device, equipment and readable storage medium storing program for executing |
| CN109413164B (en) * | 2018-10-09 | 2022-04-22 | 郑州云海信息技术有限公司 | Access service recovery method, device, equipment and readable storage medium |
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