CN106501682A - A kind of low-consumption wireless means of communication - Google Patents
A kind of low-consumption wireless means of communication Download PDFInfo
- Publication number
- CN106501682A CN106501682A CN201611115925.6A CN201611115925A CN106501682A CN 106501682 A CN106501682 A CN 106501682A CN 201611115925 A CN201611115925 A CN 201611115925A CN 106501682 A CN106501682 A CN 106501682A
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- China
- Prior art keywords
- fault detector
- packet
- low
- air
- power consumption
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/10—Streamlined, light-weight or high-speed protocols, e.g. express transfer protocol [XTP] or byte stream
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of low-consumption wireless means of communication, the method includes：Communication terminal sends wakeup packet every a preset time period to fault detector；Whether fault detector detection has packet in the air, if there is packet, judges whether aerial packet is wakeup packet；If air-data bag is wakeup packet, wireless receiving pattern opened by fault detector.The method realizes the power consumption for reducing fault detector, increases the service life.
Description
Technical field
The present invention relates to fault detector technical field, more particularly to a kind of low-consumption wireless means of communication.
Background technology
At present, the reliability service of intelligent electric power electrical network is always the important leverage of socio-economic development, with national economy
Fast development, the consumption of the energy also increases increasingly, and state key vigorously supports power grid construction, and dynamics of investment greatly strengthens, right
The requirement of the safe and reliable operation of power distribution network also more and more higher.All the time, the operational monitoring means of 10kV power distribution networks are low, mostly
The monitoring for being used for distribution line using FTU or DTU, can improve the operation and management level of power distribution network, but due to cost intensive,
Large area is installed, and there is certain difficulty.Such as C classes, D classes, E type loads region install monitoring terminal it is not necessary that
's.In above-mentioned zone, if using the fault detector that can carry out current monitoring, it is possible to carry out quick fault section fixed
Position, assists line data-logging personnel to carry out the lookup of trouble point, and also is capable of the operation shape of on-line monitoring line load and circuit
State, improves circuit reliability of operation.
Fault detector as the one kind in fault locator in intelligent distribution network, some regions obtained should
With.But due to due to device current power consumption, causing trouble indicator cannot the reliable on-line operation of long-time safety and stability,
So as to causing trouble indicator cisco unity malfunction, it is impossible to accurately recognize failure, and communication monitoring end in fault locator
End, can be with dismounting and change battery, and daytime can power by solar panel when sunny, compares fault detector maintenance
Convenient.As fault detector wireless receiving is big with power consumption during sending, certainly will reduce that fault detector equipment uses when
Between.Now, the method for tradition solution power consumption typically takes two ways：One kind is to install solar energy additional in fault detector shell
Volt cell panel, another kind is by online CT power taking technologies.
But what both approaches all cannot be basic solves the problems, such as that power consumption, solar panel night cannot obtain energy
Source, can only switch to backup battery to power, reduce the service life of monitoring device；When line load electric current is less than 10A, CT takes
Electric ability.The traditional method of above two, can all have influence on the safe and reliable lasting operation of fault locator.So such as
What reduces the power consumption of fault detector, and it is a difficult problem in the urgent need to address at present to increase the service life.
Content of the invention
It is an object of the invention to provide a kind of low-consumption wireless means of communication, to realize the power consumption for reducing fault detector,
Increase the service life.
For solving above-mentioned technical problem, the present invention provides a kind of low-consumption wireless means of communication, including：
Communication terminal sends wakeup packet every a preset time period to fault detector；
Whether fault detector detection has packet in the air, if there is packet, judges whether aerial packet is wake-up
Packet；
If air-data bag is wakeup packet, wireless receiving pattern opened by fault detector.
Preferably, after whether fault detector detection has packet in the air, also include：
If no data bag, fault detector enters low-power consumption mode.
Preferably, if the wakeup packet, after wireless receiving pattern opened by fault detector, also include：
If air-data bag is not wakeup packet, fault detector enters low-power consumption mode.
Preferably, before communication terminal sends wakeup packet to fault detector, also include：
After fault detector power-up initializing is completed, when judging not having tasks carrying, low-power consumption mode is entered.
Preferably, after the fault detector power-up initializing is completed, when judging not having tasks carrying, low work(is entered
After consumption pattern, also include：
When fault detector judges that wireless antenna is in without receiving with the state for sending, the pattern that regularly wake up is entered.
Preferably, when fault detector judges that wireless antenna is in without receiving with the state for sending, the pattern that regularly wake up is entered
Afterwards, also include：
Wireless antenna is placed in reception state in predetermined time by fault detector.
Preferably, fault detector detects whether there is packet in the air in preset time period.
A kind of low-consumption wireless means of communication provided by the present invention, communication terminal is every a preset time period to event
Barrier indicator sends wakeup packet；Whether fault detector detection has packet in the air, if there is packet, judges aerial number
Whether it is wakeup packet according to bag；If air-data bag is wakeup packet, wireless receiving pattern opened by fault detector.Can
See, only when fault detector receives wakeup packet, wireless receiving pattern can just be opened by fault detector, adopt
The mode of timing wake-up, by wireless carrier communication check air-data bag, realizes entering between fault detector and communication terminal
Row communication, so by reducing the wirelessly activating time, reduces the power consumption that wirelessly brings, and realizes the power consumption for reducing fault detector,
Increase the service life.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of flow chart of low-consumption wireless means of communication provided by the present invention；
Fig. 2 is that the order based on low-power consumption sends and receives sequential chart；
Fig. 3 is sender's flow chart；
Fig. 4 is recipient's flow chart.
Specific embodiment
The core of the present invention is to provide a kind of low-consumption wireless means of communication, to realize the power consumption for reducing fault detector,
Increase the service life.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention in
Accompanying drawing, to the embodiment of the present invention in technical scheme be clearly and completely described, it is clear that described embodiment is only
The a part of embodiment of the present invention, rather than whole embodiments.Embodiment in based on the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is a kind of flow chart of low-consumption wireless means of communication provided by the present invention, the method bag
Include：
S11：Communication terminal sends wakeup packet every a preset time period to fault detector；
S12：Whether fault detector detection has packet in the air, if there is packet, judges that whether aerial packet is
Wakeup packet；
S13：If air-data bag is wakeup packet, wireless receiving pattern opened by fault detector.
It can be seen that, only when fault detector receives wakeup packet, fault detector can just be opened and wirelessly be connect
Receipts pattern, by the way of timing wake-up, by wireless carrier communication check air-data bag, realizes fault detector and communication
Communicated between terminal, so by reducing the wirelessly activating time, reduced the power consumption that wirelessly brings, realize reducing indicating fault
The power consumption of device, increases the service life.
Said method is based on, specifically, after whether fault detector detection has packet in the air, if no data bag, therefore
Barrier indicator enters low-power consumption mode.
Further, if the wakeup packet, after wireless receiving pattern opened by fault detector, if air-data
It is not wakeup packet to wrap, and fault detector enters low-power consumption mode.
Further, before communication terminal sends wakeup packet to fault detector, also include：Electricity on fault detector
After initialization is completed, when judging not having tasks carrying, low-power consumption mode is entered.
Wherein, after the fault detector power-up initializing is completed, when judging not having tasks carrying, low-power consumption is entered
After pattern, when fault detector judges that wireless antenna is in without receiving with the state for sending, the pattern that regularly wake up is entered.That is failure
Indicator judge wireless antenna in without receive and without send state when, enter timing wake up pattern.
Further, when fault detector judges that wireless antenna is in without receiving with the state for sending, enter
After formula, wireless antenna is placed in reception state in predetermined time by fault detector.
Wherein, fault detector detects whether there is packet in the air in preset time period.
This method solves a difficult problem for distribution network failure indicator service life, as state's net requires fault detector in battery
Can be with the reliable continuous service of outdoor long-term safety in the case of power supply, therefore fault detector must be in the way of super low-power consumption
Long-time stable is reliably run, and fault detector power consumption is mainly consumed in radio communication, and the present invention propose wirelessly low
The communication means of power consumption, solves the difficult problem that fault detector wireless telecommunications produce high power consumption.
The present invention provides a kind of means of communication of low-power consumption, can greatly reduce the power supply power consumption of fault locator,
Greatly prolong the service life of device, reduce the cost of overhead transmission line fault locator later maintenance.
The present invention proposes a kind of low-consumption wireless means of communication for fault detector, and the method is wireless sharp by reducing
Live time, reduces the power consumption that wirelessly brings, by the way of timing wake-up, by wireless carrier communication check air-data bag,
Realize being communicated and communication terminal between, and intercept because opening wireless carrier, each moment there can only be data in the air
Bag is being transmitted, and enhances the reliability of packet transmission, strong antijamming capability.
The low-consumption wireless means of communication need the recipient's fault detector for cooperating and sender's communication terminal.
Fig. 2 is that the order based on low-power consumption sends and receives sequential chart.T1 is communication terminal whole cycle, and t2 is that communication is whole
End sends the interval time of packet, and wireless timings of the t3 for fault detector, t4 are wirelessly placed in for fault detector and connect
The time of receipts state.
For sender's communication terminal, the Wakeup interval Δ t and cycle T for sending wake-up packet is set, then sends wake-up packet
Quantity is N=1+T/ Δ t, wherein Δ t >=40ms, T >=3*t3 (circuit per loop line three fault detectors), and Δ t and T can set.
And when timing cycle T is reached, sender judges whether to carry out waking up to send i.e. N ≠ 0, if N=0, is not waken up
Send, if wake-up is received and wake up sign is suspended, sender carries out command operation according to order is sent.Fig. 3 is sender
Flow chart.
For recipient's fault detector, after reception device power-up initializing is completed, CPU is judged without tasks carrying, CPU
Low-power consumption mode is entered, is now judged wirelessly without reception and transmission, is entered the awake pattern of timing, fault detector can be greatly reduced
Power consumption.The awake pattern of timing is entered when wireless, internal crystal oscillator clock is wirelessly closed, CPU enters low-power consumption, and wireless timing cycle is pressed
According to the t3 cycles, open and receive the t4 times.When recipient's timing t3 is reached, reception state and retention time is wirelessly placed in
For t4, detect within the t4 times and whether there is in the air packet.If listening to packet in the air and destination address being native device, table
Show and receive a complete packet, wake up CPU, enter internal agreement parsing, judge packet.If wake-up packet, then
Wireless receiving pattern is opened, air-data bag is intercepted at full speed, is waited order to be received；If wireless receiving persistent period t4, does not detect
Packet is measured, then returns the awake pattern of wireless timing.Fig. 4 is recipient's flow chart.
Wherein, sender's awakening mode will be configured according to the timing cycle of recipient, if desired ensured with 3 dresses of group
Put and reliably can be waken up, then ensure that recipient timing of the awakening mode of recipient more than 3 times is waken up the cycle.
For recipient, timing time of intercept is then, it is ensured that recipient wirelessly enters timing receipt and intercepts state, in case
Only recipient is detected less than air-data bag, causes wirelessly exit low-power consumption mode.
For sender, the time interval of wake-up packet must is fulfilled for more than air transmission time+recipient's process time+connect
Debit sends the time, it is ensured that when sender sends next packet, can normally receive response bag, and strict implement sends
With the timing for receiving.
When recipient receives wake-up packet, and during the wireless reception state of entrance at full speed, packet should configure time-out time,
To prevent sender from not sending command operation, cause recipient to be constantly in reception state, it is impossible to enter low power consumpting state, waste
Battery power, causes the service life reduction of device.
The power consumption of the fault detector wireless module that the invention is substantially reduced, extends the battery powered cycle.The low work(
The means of communication of consumption do not affect the normal communication between device.Avoid high cost that device brought from high-capacity battery and big
Volume, it is achieved that wirelessly ultralow low-power consumption.
To sum up, a kind of low-consumption wireless means of communication provided by the present invention, communication terminal is every a Preset Time week
Phase sends wakeup packet to fault detector；Whether fault detector detection has packet in the air, if there is packet, judges empty
In packet whether be wakeup packet；If air-data bag is wakeup packet, wireless receiving mould opened by fault detector
Formula.It can be seen that, only when fault detector receives wakeup packet, wireless receiving mould can just be opened by fault detector
Formula, by the way of timing wake-up, by wireless carrier communication check air-data bag, realizes fault detector and communication terminal
Between communicated, so by reducing the wirelessly activating time, reduce the power consumption wirelessly brought, realize reducing fault detector
Power consumption, increases the service life.
Above a kind of low-consumption wireless means of communication provided by the present invention are described in detail.Used herein
Specific case is set forth to principle of the invention and embodiment, and the explanation of above example is only intended to help and understands this
The method and its core concept of invention.It should be pointed out that for those skilled in the art, without departing from this
On the premise of bright principle, some improvement and modification can also be carried out to the present invention, these improvement and modification also fall into power of the present invention
In the protection domain that profit is required.
Claims (7)
1. a kind of low-consumption wireless means of communication, it is characterised in that include：
Communication terminal sends wakeup packet every a preset time period to fault detector；
Whether fault detector detection has packet in the air, if there is packet, judges whether aerial packet is to wake up data
Bag；
If air-data bag is wakeup packet, wireless receiving pattern opened by fault detector.
2. the method for claim 1, it is characterised in that after whether fault detector detection has packet in the air, also
Including：
If no data bag, fault detector enters low-power consumption mode.
3. method as claimed in claim 2, it is characterised in that if the wakeup packet, fault detector are opened wireless
After reception pattern, also include：
If air-data bag is not wakeup packet, fault detector enters low-power consumption mode.
4. the method for claim 1, it is characterised in that communication terminal to fault detector send wakeup packet it
Before, also include：
After fault detector power-up initializing is completed, when judging not having tasks carrying, low-power consumption mode is entered.
5. method as claimed in claim 4, it is characterised in that after the fault detector power-up initializing is completed, when sentencing
When breaking without tasks carrying, after entering low-power consumption mode, also include：
When fault detector judges that wireless antenna is in without receiving with the state for sending, the pattern that regularly wake up is entered.
6. method as claimed in claim 5, it is characterised in that fault detector judges that wireless antenna is in without receiving and send
State when, enter timing wake up pattern after, also include：
Wireless antenna is placed in reception state in predetermined time by fault detector.
7. method as claimed in claim 6, it is characterised in that fault detector detects whether have in the air in preset time period
Packet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611115925.6A CN106501682A (en) | 2016-12-07 | 2016-12-07 | A kind of low-consumption wireless means of communication |
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| CN201611115925.6A CN106501682A (en) | 2016-12-07 | 2016-12-07 | A kind of low-consumption wireless means of communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447269A (en) * | 2017-03-22 | 2019-11-12 | 华为技术有限公司 | The system and method switched for asynchronous awakening mode and associative mode |
| CN113380015A (en) * | 2021-05-10 | 2021-09-10 | 河北稳控科技有限公司 | Wireless passive sensor and working method of wireless passive controller thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482734A (en) * | 2009-01-22 | 2009-07-15 | 深圳市博孚机电有限公司 | Low-power consumption control circuit and its operating procedure |
| US20100060293A1 (en) * | 2007-01-24 | 2010-03-11 | Continental Automotive France | Device for detecting the failure of an electrical power supply for a logic unit |
| CN102721899A (en) * | 2012-04-28 | 2012-10-10 | 深圳市科陆电子科技股份有限公司 | Fault indicator plant wireless communication method |
| CN202587236U (en) * | 2012-05-31 | 2012-12-05 | 国网电力科学研究院 | Power transmission line state monitoring low-power communication device based on dormancy awakening mechanism |
| CN102883370A (en) * | 2012-09-07 | 2013-01-16 | 浙江工业大学 | Distributed data transmission method for power line monitoring system on basis of wireless sensor network |
| KR20140032572A (en) * | 2012-09-06 | 2014-03-17 | 현대중공업 주식회사 | Transmission line monitoring device and operating method thereof |
| CN105119726A (en) * | 2015-08-25 | 2015-12-02 | 深圳市晓渡云科技有限公司 | Wireless sensor network node rapid awakening method and apparatus thereof |
| CN105182188A (en) * | 2015-09-30 | 2015-12-23 | 福建奥通迈胜电力科技有限公司 | Low-power-consumption AD data sampling method based on fault indicator |
| CN105490902A (en) * | 2016-02-01 | 2016-04-13 | 杭州古北电子科技有限公司 | Intelligent home system, and wireless information acquisition equipment control method and apparatus |
| CN105792339A (en) * | 2016-03-03 | 2016-07-20 | 上海大学 | Low power consumption design method for wireless sensor network node |
| CN105988554A (en) * | 2016-01-27 | 2016-10-05 | 上海华测导航技术股份有限公司 | Method for enabling single-chip microcomputer to periodically and regularly enter low-power-consumption mode |
-
2016
- 2016-12-07 CN CN201611115925.6A patent/CN106501682A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100060293A1 (en) * | 2007-01-24 | 2010-03-11 | Continental Automotive France | Device for detecting the failure of an electrical power supply for a logic unit |
| CN101482734A (en) * | 2009-01-22 | 2009-07-15 | 深圳市博孚机电有限公司 | Low-power consumption control circuit and its operating procedure |
| CN102721899A (en) * | 2012-04-28 | 2012-10-10 | 深圳市科陆电子科技股份有限公司 | Fault indicator plant wireless communication method |
| CN202587236U (en) * | 2012-05-31 | 2012-12-05 | 国网电力科学研究院 | Power transmission line state monitoring low-power communication device based on dormancy awakening mechanism |
| KR20140032572A (en) * | 2012-09-06 | 2014-03-17 | 현대중공업 주식회사 | Transmission line monitoring device and operating method thereof |
| CN102883370A (en) * | 2012-09-07 | 2013-01-16 | 浙江工业大学 | Distributed data transmission method for power line monitoring system on basis of wireless sensor network |
| CN105119726A (en) * | 2015-08-25 | 2015-12-02 | 深圳市晓渡云科技有限公司 | Wireless sensor network node rapid awakening method and apparatus thereof |
| CN105182188A (en) * | 2015-09-30 | 2015-12-23 | 福建奥通迈胜电力科技有限公司 | Low-power-consumption AD data sampling method based on fault indicator |
| CN105988554A (en) * | 2016-01-27 | 2016-10-05 | 上海华测导航技术股份有限公司 | Method for enabling single-chip microcomputer to periodically and regularly enter low-power-consumption mode |
| CN105490902A (en) * | 2016-02-01 | 2016-04-13 | 杭州古北电子科技有限公司 | Intelligent home system, and wireless information acquisition equipment control method and apparatus |
| CN105792339A (en) * | 2016-03-03 | 2016-07-20 | 上海大学 | Low power consumption design method for wireless sensor network node |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447269A (en) * | 2017-03-22 | 2019-11-12 | 华为技术有限公司 | The system and method switched for asynchronous awakening mode and associative mode |
| US10674450B2 (en) | 2017-03-22 | 2020-06-02 | Futurewei Technologies, Inc. | System and method for asynchronous wake-up mode and related mode switching |
| CN110447269B (en) * | 2017-03-22 | 2021-03-30 | 华为技术有限公司 | System and method for asynchronous wake mode and related mode switching |
| CN113380015A (en) * | 2021-05-10 | 2021-09-10 | 河北稳控科技有限公司 | Wireless passive sensor and working method of wireless passive controller thereof |
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