CN103209473A - Information acquisition method for low-power-consumption wireless sensor network - Google Patents
Information acquisition method for low-power-consumption wireless sensor network Download PDFInfo
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Abstract
The invention discloses an information acquisition system for a low-power-consumption wireless sensor network. The system comprises data aggregation nodes and data acquisition terminals, wherein the data aggregation nodes serve as synchronization reference and are used for sending synchronization information and control demands to the data acquisition terminals by frequency bands, time intervals and groups according to set fixed time intervals, wherein every time interval corresponds to a group, every group has N data acquisition terminals, the serial number of the data acquisition terminals is 1, 2...N, and N is an integer equal to or larger than 1; the acquisition terminals are used for monitoring/forwarding the synchronization information and the control demands at a time interval equal to that of the data aggregation nodes, and uploading data after receiving data uploading commands. According to the information acquisition system for the low-power-consumption wireless sensor network, apart from the data aggregation nodes which are powered by a mains supply, other data acquisition terminals all powered by batteries, so that extra costs caused by wiring, perforating and the like in the implementation process of the system can be avoided.
Description
Technical field
The invention belongs to wireless sensor network data acquisition technique field, particularly a kind of power consumption wireless sensor network information gathering method.
Background technology
Node in the radio sensing network generally adopts powered battery, and the limited energy and the requirement of long-term work are wireless sense network research and the key issue of implementing always.
In using at present, on the basis of satisfying the data acquisition demand, the most effective also is that the most direct way is: the power consumption that employing work/dormancy mechanism reduces node extends working time.Yet, in a large-scale network, the inevasible multi-hop transmission that will realize data, work/dormancy mechanism also must bring internodal stationary problem.
Therefore, be necessary to provide a kind of wireless sensor network, not only low in energy consumption, and can overcome the internodal stationary problem that brings owing to work/dormancy mechanism.
Summary of the invention
In order to overcome the problems referred to above of the prior art, the wireless sensor network information acquisition system and the method that the invention provides a kind of long-time reliability service and can implement on a large scale.
According to an aspect of the present invention, a kind of power consumption wireless sensor network information gathering system is provided, this system comprises convergence node and data collection station, wherein: the convergence node, it is as synchronous base, be used for according to the timing of setting at interval, frequency-division section, timesharing grouping send synchronizing information and control command to data collection station, the corresponding grouping of each period, and each grouping has N data acquisition terminal, be numbered 1,2 ... ..N, N is the integer more than or equal to 1; Data collection station is used for monitoring and/or transmit synchronizing information and control command with the time interval identical with the convergence node.
According to a further aspect in the invention, a kind of power consumption wireless sensor network information gathering method also is provided, wherein wireless sensor network comprises convergence node and data collection station, the method comprising the steps of: step 1, the convergence node powers on, it is used for according to the timing of setting at interval as synchronous base, and frequency-division section, timesharing grouping send synchronizing information and control command to data collection station; Step 2, data collection station powers on, and it is monitored with the time interval identical with the convergence node and/or transmits synchronizing information and control command, and wherein the execution of step 1 and step 2 does not have sequencing.
The present invention makes data collection station on the basis of satisfying the data acquisition demand, and the overwhelming majority time is in the low-power consumption resting state, can guarantee the long-play of system.It adopts adjustable work/dormancy mechanism and the searching/Restoration Mechanism synchronously of staggering the time, and can guarantee the synchronous and data upload of maximum N level, realizes the long-time reliability service of large-scale sensor network.
Description of drawings
The timing sequence diagram of Fig. 1 for using among the low-power consumption sensor network information acquisition method timeflag of the present invention.
Fig. 2 is the communication flow diagram of convergence node in the low-power consumption sensor network information acquisition method of the present invention and data terminal.
Fig. 3 is the flow chart of low-power consumption sensor network information acquisition method of the present invention in the performed step of convergence node;
Fig. 4 is the flow chart of low-power consumption sensor network information acquisition method of the present invention in the performed step of data collection station.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
At first some english abbreviations, symbol and the mark etc. that use in the accompanying drawing of the present invention are described as follows: SINK representative data aggregation node; END representative data acquisition terminal.SYNC instruction expression synchronic command, data collection station carries out synchronously after receiving this instruction, and what the present invention mentioned is to instigate end node and convergent point to be worked at one time synchronously, thus the information that guarantees convergent point can be issued to terminal node.。The COMD0 instruction represents synchronously/acquisition instructions that data collection station at first carries out carrying out data acquisition then synchronously after receiving this instruction.COMD1 command list registration is according to last teletype command, and data collection station at first carries out uploading data then synchronously after receiving this instruction.SYNC_FIND is the sequential under the terminal synchronizes searching modes; SYNC_MODE﹠amp; DATA_MODE is the sequential under the synchronous mode.
The timing sequence diagram of Fig. 1 for using among low-power consumption sensor network information acquisition system of the present invention and the method timeflag.The implication of each time that relates among Fig. 1 is as follows: t1 represents dormancy/work period (adjustable), and its size and clock precision directly influence the size of t2; T2 represents the time of SINK delayed delivery information, and this time is depended on the crystal oscillator deviation that timer conter is used, and time-delay herein is used for avoiding owing to the crystal oscillator deviation causes the sequential entanglement; T3 represents that the SYNC frame is packaged into the time that finishes that sends; T4 represents that END node maximum wait receives the time of SYNC frame synchronization, and in this time, the END node can postpone enter the wait accepting state according to self address (position in the link), postpone with SYNC time of reception (smaller or equal to) be unit; T5 represents the synchronous wakeup time (adjustable) of END node searching; T6 represents synchronous the staggering the time the time interval of END node searching; T7 represents that the COMD0 frame is packaged into the time that finishes that sends; T8 represents that the END node receives the time that data acquisition instructs laggard line data to gather; T9 represents that the COMD1 frame is packaged into the time that finishes that sends; T10 represents the instruction of END node wait data upload, and time-delay waits for that the END node is synchronous; After t11 represents that the END node is received the data upload instruction, the beginning data upload, in actual implementation procedure, node is according to the address setting data wait reception of self and the time slot of data upload, and time slot is unit with the data time of reception; T12 represent on the SINK node data teletype command send finish after, enter the wait data receiving state.Fig. 4 is timing Design figure of the present invention.
Above-mentioned each time depends on used hardware condition, below only under a kind of hardware condition, restriction and the relation of time is done exemplary explanation.Under other hardware conditions, the algorithm of time is identical.For example precondition is:
1), utilize MSP430F4130 timer conter TIMER0 as clock.
2), crystal oscillator: 32.768KHz ± 20ppm, i.e. maximum fmax=32768.65536Hz, minimum fmin=32767.34464.
3), timer conter adopts and to overflow interruption, namely 2s regularly interrupts.Suppose that dormancy/work period is Ts, then the number of times that needs to carry out interruption in the time at Ts is Ts/2.The minimum and maximum time that timer conter once interrupts is respectively:
Tmin＝65536/32768.65536＝1.99996s
Tmax＝65536/32767.34464＝2.00004s
Maximal phase is to shift time in one-period:
trel＝(2.00004-1.99996)*Ts/2
4), MSP430F4130 adopts the LM3 low-power consumption mode, and interrupts waking up by TIMER0.Wakeup time 6us.
5), radio frequency chip adopts CC1101, employing frequency calibration when entering RX or TX state by the IDLE state, this alignment time 799us.
6), CC1101XSOC waits for stable time 149-155us.
7), by 4,5,6 as can be known, node is by the normal mode of operation required time that wakes up to setting:
(6+799+149) us, the i.e. 954us≤td≤960us of us≤td≤(6+799+155)
Get maximum of T d=960us
Under these conditions, the time of the time requirement of t1: t1 is determined according to system requirements that by the user this value influences the power consumption of node.T1 is more big, and relative power consumption is more low, otherwise in like manner.The t1 actual range of node: (1.99996*Ts/2)≤t1≤(2.00004*Ts/2).
The time requirement of t2: working stage, the SINK node sends synchronizing information, and the END node receives to be waited for.Be operated at the SINK nodal clock under the situation of peak frequency fmax=32768.65536Hz, can receive synchronizing information in order to guarantee the END node, the SINK node need delay time at least (trel+Td) send i.e. t2 〉=(trel+Td).
Under the situation of Ts=180s, trel=(2.00004-1.99996) * 180/2+=0.0072s, so:
T2 〉=(0.0072+0.00096) s, i.e. t2 〉=8.16ms.
The time requirement of t3: this time is relevant with the frame length of SYNC, and the more big value of being somebody's turn to do of frame length is more big, and vice versa.Under the situation that frame length is fixed, this is worth relevant with the performance of used single-chip microcomputer and radio frequency chip.
The time requirement of t4: this value is relevant with the time of reception of synchronization frame.Suppose every the N of branch node, the time that each node receives SYNC is Trs, and then the reception total time of N node is Tr=N*Trs.Be operated at the SINK nodal clock under the situation of minimum frequency fmin=32767.34464, in order to guarantee the reception of all nodes of branch, reception should be not less than total time: Trmin=Tr+Trel+Td.Tr calculates with desirable time of reception (being the transmitting time of data), but total value will leave sufficient surplus, guarantees that under normal circumstances all nodes can both be received synchronization frame.
The time requirement of t5: the power consumption of this time effects node and synchronous recovery time, rationally set according to requirement in practical systems.
The time requirement of t6: this time needs smaller or equal to t5.
The time requirement of t7: this time is relevant with the frame length of COMD0, and the more big value of being somebody's turn to do of frame length is more big, and vice versa.Under the situation that frame length is fixed, this is worth relevant with the performance of used single-chip microcomputer and radio frequency chip.
The time requirement of t8: this value is the acquisition time of sensing data, and is relevant with type of sensor and mode of operation.
The time requirement of t9: this time is relevant with the frame length of COMD1, and the more big value of being somebody's turn to do of frame length is more big, and vice versa.Under the situation that frame length is fixed, this is worth relevant with the performance of used single-chip microcomputer and radio frequency chip.
The time requirement of t10: this time needs more than or equal to t4.
The time requirement of t11: this value is relevant with the time of reception of Frame.Suppose every the N of branch node, the time that each node receives DATA is Trd (this value will leave certain surplus, to guarantee the correct reception of data), and then the reception total time of N node is Tr=N*Trd.
The time requirement of t12: this value needs greater than (t11+t10-t9).The SINK node can: the time (t12-t11-t10+t9) is built in accepting state, and this value needs the time slot of uploading more than or equal to frame data.
The present invention proposes a kind of power consumption wireless sensor network information gathering system, this system comprises convergence node and large-scale data collection station.
As shown in Figure 2, according to the timing interval of setting, by wireless mode, periodically frequency-division section, timesharing grouping send synchronizing information and control command to the convergence node as synchronous base.The convergence node has M optional working frequency range, and each frequency range has K grouping, and each grouping has N acquisition terminal, and wherein M, K and N are the integers more than or equal to 1.Corresponding grouping of each, each grouping has N data acquisition terminal, is numbered 1,2.....N period.
The convergence node at first powers on, to judge after powering on whether the current time is the control command time, if the control command time, postpone the t2 time (because there is the crystal oscillator error in crystal oscillator, postpone to avoid causing the sequential entanglement because of the crystal oscillator error herein) send the 1st frequency range, the 1st control command of dividing into groups, and the data of wait terminal node are returned; If be the non-control command time, postpone the synchronizing information that the t2 time sends the 1st frequency range, the 1st grouping.Control command is COMD0 and COMD1, and wherein the COMD0 instruction is represented synchronously/acquisition instructions, and data collection station at first carries out carrying out data acquisition then synchronously after receiving this instruction.COMD1 command list registration is according to last teletype command, and data collection station at first carries out uploading data then synchronously after receiving this instruction.The above-mentioned non-control command of mentioning refers to the SYNC instruction, and it represents synchronic command, and data collection station carries out synchronously after receiving this instruction.
Synchronizing information and control command comprise the value of timer conter as clock information.Data collection station n is receiving that the laggard row clock of synchronizing information or control command is synchronous, and its algorithm is: local clock=synchronised clock+data transmitting time.
The pending data aggregation node has sent after control command or the synchronizing information, wait for Fixed Time Interval, 2S for example, 2s regularly interrupts when timer conter, continue to judge whether the current time is the control command time, if the control command time, then postpone the control command that the t2 time sends the 1st frequency range, the 2nd grouping, and wait for that the data of terminal node return; If be the non-control command time, postpone the synchronizing information that the t2 time sends the 1st frequency range, the 2nd grouping.The convergence node is after all grouping informations transmissions with all frequency ranges finish, and dormancy was arrived until t1 (Fig. 3) time.
Data collection station monitors/transmits that (that is, the synchronizing information and the control command that send by the wireless receiving aggregation node are if receive then transmit synchronizing information and control command with time interval identical with the convergence node.) synchronizing information and control command.
Data collection station has a plurality of, can be large-scale, belongs to different working frequency range and groupings, in the course of the work, monitors/transmit synchronizing information and control command with the time interval identical with the convergence node.
Data collection station n at first powers on, judge then whether this data collection station n is synchronous, if it is not synchronous, then enter synchronous searching modes, under this pattern, data collection station n staggers the time (being benchmark with the current time) forward or backward with Fixed Time Interval t6, makes its wakeup time t5 traversal one-period, under the perfect condition, must realize in the cycle synchronously in this traversal; Staggering the time synchronous wakeup time must be more than or equal to staggering the time the time interval, that is: t5 is more than or equal to t6, data collection station n one subsynchronous searching finish (being in the accepting state t5 time), enter resting state, wait for Fixed Time Interval, arrive until the t1 time, after the t1 time arrives, continue to judge whether this data collection station n is synchronous, if not synchronous, then continue to enter synchronous searching modes.
If data collection station n is synchronous, at t4 in the time, if receive that from the convergence node synchronizing information then carries out synchronously, and to the terminal node forwarding synchronizing information that is numbered n+1, enter resting state then, wait for Fixed Time Interval, arrive until the t1 time, after the t1 time arrives, continue to judge whether this data collection station n is synchronous, if not synchronous, then continue to enter synchronous searching modes.
Data collection station n carries out corresponding operating synchronously then as if receiving that control command is then at first carried out, (as the control command that receives is COMD0, then data collection station carries out data acquisition, as the control command that receives is COMD1, and then data collection station carries out data upload; If the time of data acquisition can be merged into an instruction with acquisition instructions and last teletype command than weak point, directly upload after namely collection finishes), and to subordinate's terminal n+1 node forwarding control command, enter resting state then, wait for Fixed Time Interval, arrive until the t1 time, after the t1 time arrives, continue to judge whether this data collection station n is synchronous, if not synchronous, then continue to enter synchronous searching modes; If do not receive information, then synchronization times does not add 1, when synchronization times does not reach the maximum of setting, be judged to be not synchronously, enter resting state then, wait for Fixed Time Interval, arrive until the t1 time, after the t1 time arrives, continue to judge whether this data collection station n is synchronous, if not synchronous, then continue to enter synchronous searching modes.
Data collection station can be sought synchronously with the time interval of setting of staggering the time under not synchronous state, in the time interval of time ergodic data aggregation node of staggering the time, realizes synchronously.Data collection station has M optional working frequency range, and each frequency range has K grouping, and each grouping has N acquisition terminal.Data collection station n (n=1 ... N), monitor same frequency range terminal n-1 and n-2 (if n=1 only monitors convergent point with the time interval identical with the convergence node; If n=2 monitors convergent point and is numbered 1 terminal; If n=3 monitors and is numbered 1 and 2 terminal; If n=4, monitor the terminal of numbering 2 and 3, the rest may be inferred) synchronizing information and control command, and transmit to the n+1 terminal of same frequency range.Data collection station n carries out corresponding operating after receiving control command.The upload frequencies of the transmission frequency determination data of data upload order.
According to a further aspect in the invention, a kind of power consumption wireless sensor network information gathering method is also proposed, Fig. 1 is the execution in step flow chart of convergence node in the power consumption wireless sensor network information gathering method of the present invention, and Fig. 2 is the execution in step flow chart of data collection station.
With reference to Fig. 3, each step below convergence node side is carried out:
Step 1, the convergence node powers on.
Step 2, judge whether the current time is the control command time, if the control command time, postpone the t2 time (because there is the crystal oscillator error in crystal oscillator, postpone to avoid causing the sequential entanglement because of the crystal oscillator error herein) send the 1st frequency range, the 1st control command of dividing into groups, and the data of wait terminal node are returned; If be the non-control command time, postpone the synchronizing information that the t2 time sends the 1st frequency range, the 1st grouping.
Control command is COMD0 and COMD1, and wherein the COMD0 instruction is represented synchronously/acquisition instructions, and data collection station at first carries out carrying out data acquisition then synchronously after receiving this instruction.COMD1 command list registration is according to last teletype command, and data collection station at first carries out uploading data then synchronously after receiving this instruction.The above-mentioned non-control command of mentioning refers to the SYNC instruction, and it represents synchronic command, and data collection station carries out synchronously after receiving this instruction.
Synchronizing information and control command comprise the value of timer conter as clock information.Node N is receiving that the laggard row clock of synchronizing information or control command is synchronous, and its algorithm is: local clock=synchronised clock+data transmitting time.
Step 3, the pending data aggregation node has sent after control command or the synchronizing information, wait for Fixed Time Interval, 2S for example, 2s regularly interrupts when timer conter, continues to judge whether the current time is the control command time, if the control command time, then postpone the control command that the t2 time sends the 1st frequency range, the 2nd grouping, and the data of wait terminal node are returned; If be the non-control command time, postpone the synchronizing information that the t2 time sends the 1st frequency range, the 2nd grouping.
Step 4, repeating step 2 finishes until all groupings (K grouping) information transmission of the 1st frequency range.
Step 5, adjusting frequency range is the 2nd frequency range, repeating step 2,3,4.
Step 6, repeating step 5 send until all frequency ranges (M frequency range) and finish.
Step 7, dormancy was arrived until t1 (Fig. 3) time, repeating step 2,3,4,5,6, t1 represents dormancy/work period.
With reference to Fig. 4, each step below the data collection station side is carried out:
Step 1, data collection station n powers on.
Step 2 judges whether this data collection station n is synchronous, if synchronous, then changes step 5 over to, if not synchronous, changes step 3 over to
Step 3, data collection station n enters synchronous searching modes, under this pattern, data collection station n is with Fixed Time Interval t6 stagger the time forward or backward (being benchmark with the current time), make its wakeup time t5 traversal one-period, under the perfect condition, must realize in the cycle synchronously in this traversal; Staggering the time synchronous wakeup time must be more than or equal to staggering the time the time interval, that is: t5 is more than or equal to t6.
Step 4, data collection station n one subsynchronous searching finishes (being in the accepting state t5 time), execution in step 6.
If step 5 data collection station n is synchronous, at t4 in the time, if receive that from the convergence node synchronizing information then carries out synchronously, and to the terminal node forwarding synchronizing information that is numbered n+1, execution in step 6 then; If receiving that control command is then at first carried out carries out corresponding operating synchronously then, (as the control command that receives is COMD0, and then data collection station carries out data acquisition, as the control command that receives is COMD1, and then data collection station carries out data upload; If the time of data acquisition can be merged into an instruction with acquisition instructions and last teletype command than weak point, directly upload after namely collection finishes), and to subordinate's terminal n+1 node forwarding control command, execution in step 6 then; If do not receive information, then synchronization times does not add 1, when synchronization times does not reach the maximum of setting, be judged to be not synchronous, execution in step 6.
Step 6, data collection station n enter resting state, wait for Fixed Time Interval, arrive until the t1 time, after the t1 time arrives, continue to judge whether this data collection station n is synchronous, if synchronous regime, then execution in step 5, otherwise execution in step 3,4.
In the present invention, when carrying out the COMD1 instruction, wait for then to time t10 at first synchronously, guarantee that all nodes of same grouping are all synchronous, data collection station is according to the numbering setting data wait reception of self and the time slot of data upload then, and time slot is unit with the data time of reception; Each data collection station divides time slot that data are uploaded to the convergence node step by step.The data that data collection station n uploads comprise the data that itself reaches all subordinate's terminals (n+1, n+2, n+3......).
System and method of the present invention utilizes adjustable work/dormancy mechanism and the searching/Restoration Mechanism synchronously of staggering the time, and realizes the long-time reliability service of large-scale sensor network.Frequency-division section, timesharing grouping send synchronizing information to the convergence node at interval with timing, data collection station n monitors the synchronizing information of terminal n-1 and n-2 at interval with regular time, in case the synchronizing information of receiving then realize synchronously and transmit enters normal data then and gathers sending mode.This system is except the data aggregation node adopts mains-supplied, and other all data collection stations all adopt powered battery, the extra cost that can avoid that system connects up in implementation process, perforation etc. brought.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; be understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. power consumption wireless sensor network information gathering system, this system comprises convergence node and data collection station, wherein:
The convergence node, it is as synchronous base, be used for according to the timing of setting at interval, frequency-division section, timesharing grouping send synchronizing information and control command to data collection station, the corresponding grouping of each period, each grouping has N data acquisition terminal, is numbered 1,2.....N, and N is the integer more than or equal to 1;
Data collection station is used for monitoring/transmit synchronizing information and control command with the time interval identical with the convergence node, and uploads data after receiving the data upload instruction.
2. the system as claimed in claim 1 is characterized in that, described data collection station is a plurality of, belongs to different working frequency range and groupings.
3. system as claimed in claim 2, it is characterized in that: described convergence node has M optional working frequency range, each frequency range has K grouping, each grouping has N acquisition terminal, described control command comprises data acquisition and two kinds of orders of data upload, order simultaneously comprises synchronizing information, and wherein M, K and N are the integers more than or equal to 1.
4. system as claimed in claim 3 is characterized in that, data collection station is staggered the time time interval searching synchronously with what set under not synchronous state, in the time interval of ergodic data aggregation node in the time interval of staggering the time, realize synchronously.
5. system as claimed in claim 3 is characterized in that, data collection station n monitors synchronizing information and the control command of same frequency range terminal n-1 and n-2 with the time interval identical with the convergence node, and transmits to the n+1 terminal of same frequency range.
6. as each described system of claim 1-5, it is characterized in that data collection station n carries out corresponding operating after receiving control command, the upload frequencies of the transmission frequency determination data of data upload order.
7. power consumption wireless sensor network information gathering method, wherein wireless sensor network comprises convergence node and data collection station, the method comprising the steps of:
Step 1, the convergence node powers on, and it is used for according to the timing of setting at interval as synchronous base, and frequency-division section, timesharing grouping send synchronizing information and control command to data collection station;
Step 2, data collection station powers on, and it monitors/transmits synchronizing information and control command with the time interval identical with the convergence node, and uploads data after receiving the data upload instruction.
Wherein the execution of step 1 and step 2 does not have sequencing.
8. method as claimed in claim 7 is characterized in that, step 1 further comprises:
Step 101, the convergence node powers on;
Step 102, whether the judgment data aggregation node current time is the control command time, if the control command time, the delay t2 time sends the control command of the 1st frequency range, the 1st grouping, and the data of wait corresponding data acquisition terminal node are returned; If be the non-control command time, postpone the synchronizing information that the t2 time sends the 1st frequency range, the 1st grouping, wherein t2 represents the time of convergence node delayed delivery information;
Step 2 further comprises:
Step 201, data collection station n powers on;
Step 202 judges whether this data collection station n is synchronous, if synchronous, then changes step 205 over to, if not synchronous, then changes step 203 over to;
If step 205 data collection station n is synchronous, at t4 in the time, if receive that from the convergence node synchronizing information then carries out synchronously, and to the terminal node forwarding synchronizing information that is numbered n+1, enter resting state then; Carry out corresponding operating synchronously then as if receiving that control command is then at first carried out, and transmit control command to the subordinate's data collection station node that is numbered n+1, enter resting state then; If do not receive information, then synchronization times does not add 1, when synchronization times does not reach the maximum of setting, is judged to be not synchronously, and wherein t4 represents the reception stand-by period that data collection station is the longest.
9. method according to claim 8 is characterized in that, further comprises step after step 102:
Step 103, the pending data aggregation node has sent after control command or the synchronizing information, after waiting for Fixed Time Interval, continue to judge whether the current time is the control command time, if the control command time, then postpone the control command that the t2 time sends the 1st frequency range, the 2nd grouping, and the data of wait terminal node are returned; If be the non-control command time, postpone the synchronizing information that the t2 time sends the 1st frequency range, the 2nd grouping;
Step 104, repeating step 102 finishes until all grouping informations transmissions of the 1st frequency range;
Step 105, adjusting frequency range is the 2nd frequency range, repeating step 102,103,104;
Step 106, repeating step 105 send until all M frequency ranges and finish;
Step 107, dormancy was arrived until the t1 time, repeating step 102,103,104,105,106, t1 represents dormancy/work period.
10. method according to claim 9 is characterized in that, after step 202, further comprises step:
Step 203, data collection station n enters synchronous searching modes, under this pattern, data collection station n is benchmark with the current time, t6 staggers the time forward or backward with Fixed Time Interval, make its wakeup time t5 traversal one-period, the synchronous wakeup time of staggering the time must be more than or equal to staggering the time the time interval, that is: t5 is more than or equal to t6;
Step 204, data collection station n one subsynchronous searching finishes execution in step 206;
After step 205, further comprise step:
Step 206, data collection station n enters resting state, waits for Fixed Time Interval, arrive until the t1 time, after the t1 time arrives, continue to judge whether this data collection station n is synchronous, if synchronous regime, then execution in step 205, otherwise execution in step 203,204.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451248A (en) * | 2014-08-29 | 2016-03-30 | 展讯通信（上海）有限公司 | Data acquisition system and data acquisition method |
| CN105682199A (en) * | 2016-02-01 | 2016-06-15 | 深圳市国华光电科技有限公司 | Wireless synchronization method and system |
| WO2017012359A1 (en) * | 2015-07-22 | 2017-01-26 | 深圳多新哆技术有限责任公司 | Method for controlling power-on of sensors |
| CN108934054A (en) * | 2018-06-19 | 2018-12-04 | 昆明理工大学 | A kind of Ad-hoc network cluster dividing algorithm based on node data value |
| CN109769223A (en) * | 2019-02-28 | 2019-05-17 | 上海电气集团股份有限公司 | A kind of acquisition method and data collection system of noise signal wireless synchronization |
| CN110545537A (en) * | 2019-07-12 | 2019-12-06 | 浙江捷昌线性驱动科技股份有限公司 | electric lifting table control system based on Bluetooth protocol communication |
| CN111866907A (en) * | 2019-04-29 | 2020-10-30 | 苏州捷杰传感技术有限公司 | Sensor networking time-staggered awakening control method and system based on ZigBee technology |
| CN112616121A (en) * | 2020-12-25 | 2021-04-06 | 国网北京市电力公司 | Method and device for transmitting monitoring data of outlet pressure plate |
| CN113891448A (en) * | 2021-09-15 | 2022-01-04 | 国网福建省电力有限公司福州供电公司 | Ad hoc network communication method and terminal |
| CN116321401A (en) * | 2023-02-17 | 2023-06-23 | 重庆御芯微信息技术有限公司 | Low-power consumption wireless data acquisition communication method and system |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105451248A (en) * | 2014-08-29 | 2016-03-30 | 展讯通信（上海）有限公司 | Data acquisition system and data acquisition method |
| CN105451248B (en) * | 2014-08-29 | 2019-07-05 | 展讯通信（上海）有限公司 | A kind of data collection system and collecting method |
| WO2017012359A1 (en) * | 2015-07-22 | 2017-01-26 | 深圳多新哆技术有限责任公司 | Method for controlling power-on of sensors |
| CN105682199A (en) * | 2016-02-01 | 2016-06-15 | 深圳市国华光电科技有限公司 | Wireless synchronization method and system |
| CN105682199B (en) * | 2016-02-01 | 2019-05-28 | 深圳市国华光电科技有限公司 | A kind of method and system of wireless synchronization |
| CN108934054B (en) * | 2018-06-19 | 2021-07-16 | 昆明理工大学 | Ad-hoc network clustering algorithm based on node data values |
| CN108934054A (en) * | 2018-06-19 | 2018-12-04 | 昆明理工大学 | A kind of Ad-hoc network cluster dividing algorithm based on node data value |
| CN109769223B (en) * | 2019-02-28 | 2022-06-10 | 上海电气集团股份有限公司 | Noise signal wireless synchronization acquisition method and data acquisition system |
| CN109769223A (en) * | 2019-02-28 | 2019-05-17 | 上海电气集团股份有限公司 | A kind of acquisition method and data collection system of noise signal wireless synchronization |
| CN111866907A (en) * | 2019-04-29 | 2020-10-30 | 苏州捷杰传感技术有限公司 | Sensor networking time-staggered awakening control method and system based on ZigBee technology |
| CN111866907B (en) * | 2019-04-29 | 2022-06-21 | 苏州捷杰传感技术有限公司 | Sensor networking time-staggered awakening control method and system based on ZigBee technology |
| CN110545537A (en) * | 2019-07-12 | 2019-12-06 | 浙江捷昌线性驱动科技股份有限公司 | electric lifting table control system based on Bluetooth protocol communication |
| CN112616121A (en) * | 2020-12-25 | 2021-04-06 | 国网北京市电力公司 | Method and device for transmitting monitoring data of outlet pressure plate |
| CN113891448A (en) * | 2021-09-15 | 2022-01-04 | 国网福建省电力有限公司福州供电公司 | Ad hoc network communication method and terminal |
| CN113891448B (en) * | 2021-09-15 | 2024-02-27 | 国网福建省电力有限公司福州供电公司 | Ad hoc network communication method and terminal |
| CN116321401A (en) * | 2023-02-17 | 2023-06-23 | 重庆御芯微信息技术有限公司 | Low-power consumption wireless data acquisition communication method and system |
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