CN104244382A - Power control method and device for wireless body area network sensor nodes - Google Patents
Power control method and device for wireless body area network sensor nodes Download PDFInfo
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- CN104244382A CN104244382A CN201310253745.4A CN201310253745A CN104244382A CN 104244382 A CN104244382 A CN 104244382A CN 201310253745 A CN201310253745 A CN 201310253745A CN 104244382 A CN104244382 A CN 104244382A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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Abstract
The invention discloses a power control method and device for wireless body area network sensor nodes. The method includes the steps that when a data acquisition task starts, a sensor module reports acquired data to a processor module in each data acquisition period according to the power level grade indicated by the processor module in advance, and reports the power level grade of the sensor module; the processor module determines the power level grade of a next data acquisition period according to the signal quality of the data reported by the sensor module and the power level grade reported by the sensor module, and sends the power level grade of the next data acquisition period to the sensor module. Through the power control method and device for wireless body area network sensor nodes, the power consumption of the wireless body area network sensor nodes is dynamically controlled.
Description
Technical field
The present invention relates to short distance broadband wireless communications field, particularly relate to a kind of Poewr control method and device of wireless body area network sensor node.
Background technology
Wireless body area network (WBAN, Wireless Body Area Network) technology is the fusion of micro sensing technology, biomedical technology and wireless communication technology, the key technology becoming Internet of Things due to features such as its low-power consumption, high reliability, high throughputs supports, ubiquitous medical services can be provided, become the focus of medical profession, business circles and academia's extensive concern.
WBAN system belongs to short range communication systems, there is following characteristics: WBAN system is mainly used in grouped data collection or the monitoring of local conditions in medical treatment or non-medical field at present, take human body as channel, especially implanting device, changeable tissue parameter result in complicated channel conditions, and human body is very sensitive to electromagnetic reaction, so essential to the control of equipment transmitted power; When equipment implant into body, the volume of battery and life problems are outstanding difficult problems for system; And traditional fixed step size Poewr control method not only follow-up control is poor, but also power loss unnecessary under stable channels situation can be caused; WBAN system group network is flexible, the star topology formed with everyone with it hub (hub) and several nodes (node) is for elementary cell, the irregular motion of this topology unit makes the topological structure of system flexible and changeable, causes received power unstable.Therefore, while considering the performance characteristics such as the reliability of WBAN system, multiplicity of network and mobility, effectively process power consumption issues has become one of significant challenge that WBAN technology faces.
IEEE 802.15.6 defines the Energy Saving Strategy of wireless body area network from macroscopic perspective, gives the method that power consumption is saved in " dormancy " and " hibernation " two kinds, but dynamic power control strategy is still blank.Because sensor node is mostly rely on battery to carry out work, and sensor node and communication module are shared a set of power supplys, and therefore, how the power consumption of the sensor node of Dynamic controlling wireless body area network, is current problem demanding prompt solution.
Summary of the invention
In view of this, main purpose of the present invention is the Poewr control method and the device that provide a kind of wireless body area network sensor node, to realize the power consumption of Dynamic controlling wireless body area network sensor node.
For achieving the above object, technical scheme of the present invention is achieved in that
A Poewr control method for wireless body area network sensor node, the method comprises:
When data acquisition session starts, the power level grade that sensor assembly indicates in advance according to processor module in each data collection cycle reports gathered data to described processor module, and reports the power level grade of described sensor assembly;
The power level grade that described processor module reports according to the signal quality of described sensor assembly reported data and described sensor assembly, determines the power level grade of next data collection cycle and sends to described sensor assembly.
Preferably, before data acquisition session starts, the method also comprises:
Described processor module sends to described sensor assembly and wakes dormancy instruction up, described sensor assembly according to described in wake dormancy instruction up and wake up from resting state;
Described processor module sends to described sensor assembly and wakes SLEEP instruction up, described sensor assembly according to described in wake SLEEP instruction up and enter and treat operating state.
Preferably, the method also comprises:
When data acquisition session starts, described processor module sends data acquisition instructions to described sensor assembly, and described sensor assembly enters operating state after receiving described data acquisition instructions and starts to carry out data acquisition.
Preferably, the method also comprises:
At the end of data acquisition session, described processor module sends END instruction to described sensor assembly, and whether the collection of described sensor assembly end data also continues to keep operating state to described processor module inquiry;
If described processor module judges to need to continue image data, then send data acquisition instructions to described sensor assembly; If described processor module judges without the need to continuing image data, then send to described sensor assembly and enter sleep state instruction, described sensor assembly enters sleep state; If to enter when dormant duration reaches predetermined threshold value described processor module still without data acquisition demand at described sensor assembly, then described processor module sends to described sensor assembly and enters resting state instruction, and described sensor assembly enters resting state.
An output control device for wireless body area network sensor node, comprising: sensor assembly and processor module,
Described sensor assembly, for when data acquisition session starts, the power level grade indicated in advance according to processor module in each data collection cycle reports gathered data to described processor module, and reports the power level grade of described sensor assembly;
Described processor module, for the power level grade reported according to signal quality and the described sensor assembly of described sensor assembly reported data, determines the power level grade of next data collection cycle and sends to described sensor assembly.
Preferably, before data acquisition session starts, described processor module sends to described sensor assembly and wakes dormancy instruction up, accordingly, described sensor assembly according to described in wake dormancy instruction up and wake up from resting state;
Described processor module sends to described sensor assembly and wakes SLEEP instruction up, accordingly, described sensor assembly according to described in wake SLEEP instruction up and enter and treat operating state.
Preferably, when data acquisition session starts, described processor module sends data acquisition instructions to described sensor assembly, and described sensor assembly enters operating state after receiving described data acquisition instructions and starts to carry out data acquisition.
Preferably, at the end of data acquisition session, described processor module sends END instruction to described sensor assembly, and whether the collection of described sensor assembly end data also continues to keep operating state to described processor module inquiry;
If described processor module judges to need to continue image data, then send data acquisition instructions to described sensor assembly; If described processor module judges without the need to continuing image data, then send to described sensor assembly and enter sleep state instruction, described sensor assembly enters sleep state; If to enter when dormant duration reaches predetermined threshold value described processor module still without data acquisition demand at described sensor assembly, then described processor module sends to described sensor assembly and enters resting state instruction, and described sensor assembly enters resting state.
Preferably, described device also comprises: energy supply module, for powering to described processor module and sensor assembly.
The Poewr control method of a kind of wireless body area network sensor node provided by the invention and device, under ensureing that sensor node carries out the prerequisite of normal data acquisition, effectively can save power consumption; Realization of the present invention is simple, little to overhead requirements, is applicable to the short range communication systems that this power conservation requirement of wireless body area network is high.
Accompanying drawing explanation
Fig. 1 is the flow chart of the Poewr control method of a kind of wireless body area network sensor node of the embodiment of the present invention;
Fig. 2 is the structural representation of a kind of sensor node of the embodiment of the present invention;
Fig. 3 is the flow chart of the Poewr control method of the another kind of wireless body area network sensor node of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
The Poewr control method of a kind of wireless body area network sensor node that the embodiment of the present invention provides, as shown in Figure 1, mainly comprises:
Step 101, when data acquisition session starts, the power level grade that sensor assembly indicates in advance according to processor module in each data collection cycle reports gathered data to processor module, and reports the power level grade of sensor assembly.
Sensor assembly and processor module all belong to the internal module of the output control device of sensor node, mapping relations between sensor node internal preset power level grade and transmitted power, the transmitted power that different power level grade is corresponding different, these mapping relations can by described sensor assembly and processor module call.
So, when data acquisition session starts, processor module can at last data collection period to the power level grade that uses of a data collection cycle after sensor assembly instruction, accordingly, the power level grade that sensor assembly indicates in last data collection period receiving processor module, in the described power level grade that a rear data collection cycle indicated according to the last cycle, gathered data are reported to processor module according to the transmitted power of correspondence, and sensor assembly also reports the power level grade self adopted to processor module when reporting gathered data.
Further, before data acquisition session starts, described processor module needs to send to described sensor assembly to wake dormancy instruction up, described sensor assembly according to described in wake dormancy instruction up and wake up from resting state; Described processor module needs to send to described sensor assembly to wake SLEEP instruction up, described sensor assembly according to described in wake SLEEP instruction up and enter and treat operating state.
When data acquisition session starts, described processor module sends data acquisition instructions to described sensor assembly, and described sensor assembly enters operating state after receiving described data acquisition instructions and starts to carry out data acquisition.
Step 102, the power level grade that processor module reports according to the signal quality of sensor assembly reported data and sensor assembly, determines the power level grade of next data collection cycle and sends to sensor assembly.
The power level grade that processor module reports according to the signal quality of last data collection period inner sensor module reported data and sensor assembly, determines the power level grade of next data collection cycle and sends to sensor assembly; Sensor assembly according to the power level grade that described processor module sends, adopts corresponding transmitted power to send the data gathered to processor module in next data collection cycle described.
Wherein, according to signal quality and the power level grade of reported data in last data collection period; adjust the power level grade in next cycle; its concrete adjustable strategies can specifically set according to actual needs; the embodiment of the present invention does not limit concrete adjustable strategies, and in practical application, any adjustable strategies that can be applicable to the embodiment of the present invention all should belong to the protection range of the embodiment of the present invention.
In addition, at the end of data acquisition session, processor module sends END instruction to sensor assembly, and whether the collection of sensor assembly end data also continues to keep operating state to processor module inquiry;
If processor module judges to need to continue image data, then send data acquisition instructions to sensor assembly; If processor module judges without the need to continuing image data, then send to sensor assembly and enter sleep state instruction, sensor assembly enters sleep state; If entered when dormant duration reaches predetermined threshold value at sensor assembly, processor module is still without data acquisition demand, then processor module sends to sensor assembly and enters resting state instruction, and sensor assembly enters resting state.
The Poewr control method of corresponding above-mentioned wireless body area network sensor node, the embodiment of the present invention also provides a kind of output control device of wireless body area network sensor node, mainly comprises: sensor assembly and processor module, wherein,
Sensor assembly, for when data acquisition session starts, the power level grade indicated in advance according to processor module in each data collection cycle reports gathered data to processor module, and reports the power level grade of sensor assembly;
Processor module, for the power level grade reported according to signal quality and the sensor assembly of sensor assembly reported data, determines the power level grade of next data collection cycle and sends to sensor assembly.
Further, before data acquisition session starts, processor module sends to sensor assembly and wakes dormancy instruction up, and accordingly, sensor assembly wakes up from resting state according to waking dormancy instruction up;
Processor module sends to sensor assembly and wakes SLEEP instruction up, and accordingly, sensor assembly enters treat operating state according to waking SLEEP instruction up.
When data acquisition session starts, processor module sends data acquisition instructions to sensor assembly, and sensor assembly enters operating state after receiving data acquisition instructions and starts to carry out data acquisition.
Further, at the end of data acquisition session, processor module sends END instruction to sensor assembly, and whether the collection of sensor assembly end data also continues to keep operating state to processor module inquiry;
If processor module judges to need to continue image data, then send data acquisition instructions to sensor assembly; If processor module judges without the need to continuing image data, then send to sensor assembly and enter sleep state instruction, sensor assembly enters sleep state; If entered when dormant duration reaches predetermined threshold value at sensor assembly, processor module is still without data acquisition demand, then processor module sends to sensor assembly and enters resting state instruction, and sensor assembly enters resting state.
Further, this device also comprises: energy supply module, for powering to processor module and sensor assembly.
The embodiment of the present invention also provides a kind of sensor node comprising said apparatus, as shown in Figure 2, this sensor node mainly comprises: sensor assembly, processor module, wireless communication module and energy supply module, wherein, the effect of sensor assembly, processor module and energy supply module and function, see described in aforementioned means embodiment, repeat no more herein.Wireless communication module, for realizing sensor node and extraneous radio communication function.
In addition, sensor assembly comprises sense signals module, transmitter submodule and sampling/maintenance submodule, wherein, sense signals module is data acquisition unit, transmitter submodule is responsible for collection and the transmission of signal, sampling/keep submodule to be used for sampling to the data of collection, and carry out the record of data.
Processor module comprises processor submodule and memory submodule, and wherein, the data that processor submodule is used for gathering process, and memory submodule is used for storing data.
Wireless communication module can comprise network submodular, medium education (MAC) submodule and transceiver submodule, wherein, network submodular is responsible for the command function of networking contour level, MAC submodule is for carrying out the data processing of MAC layer, and transceiver submodule is for carrying out the relevant data transmit-receive of physical layer.
Below in conjunction with the sensor node structure shown in Fig. 2, elaborate the Poewr control method of the embodiment of the present invention further.See Fig. 3, first, processor module sends to sensor assembly and wakes dormancy instruction up, and sensor assembly wakes up from resting state according to waking dormancy instruction up; Processor module sends to sensor assembly and wakes SLEEP instruction up, and sensor assembly enters treat operating state according to waking SLEEP instruction up.
When there being data acquisition demand, processor module sends data acquisition instructions to sensor assembly, and sensor assembly enters operating state after receiving data acquisition instructions and starts to carry out data acquisition; The data that the power level grade that sensor assembly indicates in advance according to processor module in each data collection cycle gathers to processor module real-time report, and the power level grade reporting sensor assembly.Processor module can at last data collection period to the power level grade that uses of a data collection cycle after sensor assembly instruction, accordingly, the power level grade that sensor assembly indicates in last data collection period receiving processor module, in the described power level grade that a rear data collection cycle indicated according to the last cycle, report gathered data according to the transmitted power of correspondence to processor module.Here, sensor assembly can according to the power level grade reported data of acquiescence at first data collection cycle; Also power level grade can be carried by processor module in the data acquisition instructions sent to sensor assembly, the power level grade reported data that sensor assembly indicates in first data collection cycle is according to described data acquisition instructions.From second data collection cycle, sensor assembly can carry out reporting of image data, sensor assembly also reports sensor assembly to use power level grade when reporting gathered data according to processor module in the power level grade of upper cycle instruction.The power level grade that processor module reports according to the signal quality of sensor assembly reported data and sensor assembly, determines the power level grade of next data collection cycle and sends to sensor assembly; Sensor assembly according to the power level grade that described processor module sends, adopts corresponding transmitted power to send the data gathered to processor module, so continues, until data acquisition session terminates in next data collection cycle described.
At the end of data acquisition session, processor module sends END instruction to sensor assembly, and whether the collection of sensor assembly end data also continues to keep operating state to processor module inquiry;
Processor module judges, generally includes following three kinds of situations: 1, temporarily do not need image data, 2, need Resurvey data, 3, need to gather new data.If the above-mentioned 2nd and 3 kinds of situations, then processor module sends data acquisition instructions to sensor assembly, and indication sensor module starts to perform data acquisition session.If above-mentioned 1st kind of situation, then processor module sends to sensor assembly and enters sleep state instruction, and sensor assembly enters sleep state; In addition, processor module statistics sensor assembly is in dormant duration, if to enter when dormant duration reaches predetermined threshold value processor module still without data acquisition demand at sensor assembly, then processor module sends to sensor assembly and enters resting state instruction, and sensor assembly enters resting state.
In sum, the embodiment of the present invention has filled up the blank of the Dynamic controlling sensor node power consumption in wireless body area network, under ensureing that sensor node carries out the prerequisite of normal data acquisition, effectively can save power consumption, this is not only conducive to energy-conservation, also seems particularly important to human-body safety; The realization of the embodiment of the present invention is simple, little to overhead requirements, is applicable to the short range communication systems that this power conservation requirement of wireless body area network is high.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (9)
1. a Poewr control method for wireless body area network sensor node, is characterized in that, the method comprises:
When data acquisition session starts, the power level grade that sensor assembly indicates in advance according to processor module in each data collection cycle reports gathered data to described processor module, and reports the power level grade of described sensor assembly;
The power level grade that described processor module reports according to the signal quality of described sensor assembly reported data and described sensor assembly, determines the power level grade of next data collection cycle and sends to described sensor assembly.
2. the Poewr control method of wireless body area network sensor node according to claim 1, it is characterized in that, before data acquisition session starts, the method also comprises:
Described processor module sends to described sensor assembly and wakes dormancy instruction up, described sensor assembly according to described in wake dormancy instruction up and wake up from resting state;
Described processor module sends to described sensor assembly and wakes SLEEP instruction up, described sensor assembly according to described in wake SLEEP instruction up and enter and treat operating state.
3. the Poewr control method of wireless body area network sensor node according to claim 1, it is characterized in that, the method also comprises:
When data acquisition session starts, described processor module sends data acquisition instructions to described sensor assembly, and described sensor assembly enters operating state after receiving described data acquisition instructions and starts to carry out data acquisition.
4. the Poewr control method of wireless body area network sensor node according to claim 1, it is characterized in that, the method also comprises:
At the end of data acquisition session, described processor module sends END instruction to described sensor assembly, and whether the collection of described sensor assembly end data also continues to keep operating state to described processor module inquiry;
If described processor module judges to need to continue image data, then send data acquisition instructions to described sensor assembly; If described processor module judges without the need to continuing image data, then send to described sensor assembly and enter sleep state instruction, described sensor assembly enters sleep state; If to enter when dormant duration reaches predetermined threshold value described processor module still without data acquisition demand at described sensor assembly, then described processor module sends to described sensor assembly and enters resting state instruction, and described sensor assembly enters resting state.
5. an output control device for wireless body area network sensor node, is characterized in that, comprising: sensor assembly and processor module,
Described sensor assembly, for when data acquisition session starts, the power level grade indicated in advance according to processor module in each data collection cycle reports gathered data to described processor module, and reports the power level grade of described sensor assembly;
Described processor module, for the power level grade reported according to signal quality and the described sensor assembly of described sensor assembly reported data, determines the power level grade of next data collection cycle and sends to described sensor assembly.
6. the output control device of wireless body area network sensor node according to claim 5, it is characterized in that, before data acquisition session starts, described processor module sends to described sensor assembly and wakes dormancy instruction up, accordingly, described sensor assembly according to described in wake dormancy instruction up and wake up from resting state;
Described processor module sends to described sensor assembly and wakes SLEEP instruction up, accordingly, described sensor assembly according to described in wake SLEEP instruction up and enter and treat operating state.
7. the output control device of wireless body area network sensor node according to claim 5, it is characterized in that, when data acquisition session starts, described processor module sends data acquisition instructions to described sensor assembly, and described sensor assembly enters operating state after receiving described data acquisition instructions and starts to carry out data acquisition.
8. the output control device of wireless body area network sensor node according to claim 5, it is characterized in that, at the end of data acquisition session, described processor module sends END instruction to described sensor assembly, and whether the collection of described sensor assembly end data also continues to keep operating state to described processor module inquiry;
If described processor module judges to need to continue image data, then send data acquisition instructions to described sensor assembly; If described processor module judges without the need to continuing image data, then send to described sensor assembly and enter sleep state instruction, described sensor assembly enters sleep state; If to enter when dormant duration reaches predetermined threshold value described processor module still without data acquisition demand at described sensor assembly, then described processor module sends to described sensor assembly and enters resting state instruction, and described sensor assembly enters resting state.
9. the output control device of wireless body area network sensor node according to any one of claim 5-8, it is characterized in that, described device also comprises: energy supply module, for powering to described processor module and sensor assembly.
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| CN201310253745.4A CN104244382A (en) | 2013-06-24 | 2013-06-24 | Power control method and device for wireless body area network sensor nodes |
| PCT/CN2013/082070 WO2013185738A2 (en) | 2013-06-24 | 2013-08-22 | Power control method and device for wireless body area network sensor node |
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| CN201310253745.4A CN104244382A (en) | 2013-06-24 | 2013-06-24 | Power control method and device for wireless body area network sensor nodes |
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| CN106413065A (en) * | 2016-12-05 | 2017-02-15 | 浙江科技学院 | Control method of low-power-consumption wireless sensor network system |
| CN107708189A (en) * | 2017-09-29 | 2018-02-16 | 深圳市盛路物联通讯技术有限公司 | A kind of device sleeps awakening method and system |
| CN107949049A (en) * | 2017-11-15 | 2018-04-20 | 浙江省产品质量安全检测研究院 | A kind of wireless sensor network Poewr control method |
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| WO2013185738A3 (en) | 2014-05-15 |
| WO2013185738A2 (en) | 2013-12-19 |
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