CN107196725A - Embedded device time service method based on priority - Google Patents
Embedded device time service method based on priority Download PDFInfo
- Publication number
- CN107196725A CN107196725A CN201710321282.9A CN201710321282A CN107196725A CN 107196725 A CN107196725 A CN 107196725A CN 201710321282 A CN201710321282 A CN 201710321282A CN 107196725 A CN107196725 A CN 107196725A
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- time
- time service
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004891 communication Methods 0.000 abstract description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/14—Setting the time according to the time information carried or implied by the radio signal the radio signal being a telecommunication standard signal, e.g. GSM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electric Clocks (AREA)
Abstract
The invention discloses a kind of embedded device time service method based on priority, GPS time services priority is set as P1, GSM time services priority is P2, NTP time services priority is P3；After embedded device start, 3 kinds of time service modes initiate work simultaneously, any time service mode is preferentially got after UTC time, was performed as long as no the higher time service method of priority and RTC chip time service is acted, just the storage of this UTC time into embedded RTC chip；If the time service source of high priority gets UTC time, then the time service request of low priority stops the acquisition of time service data immediately, until the time service source of highest priority was got after the time, stops whole time service strategy.The present invention can allow embedded device, and quick obtaining, to the time accuracy highest time service time, is easy to keep between internet of things equipment being in communication with each other synchronization, a reliable basis of time is provided for the logout of equipment in itself after powering.
Description
Technical field
The invention belongs to embedded device time service method technical field, particularly relate to a kind of based on the embedding of priority
Enter formula equipment time service method.
Background technology
Along with Internet of Things, the fast development of car networking technology, requirement more and more higher of the communication terminal to real-time, time service
Equipment afterwards can ensure to keep synchronous between each remote terminal, while when the equipment after time service can provide for reduction scene
Sequence foundation.The time service principle of embedded product is mainly by the way of GPS on the market at present, the time service method ratio of this mode
It is more single, easily influenceed by factors such as weather and environment.
There are three kinds of time service methods, i.e. GPS, GSM and NTP on the market at present.The characteristics of GPS time services is that real-time is higher, number
According in transmitting procedure, it is delayed smaller；Have the disadvantage that gps signal is easily influenceed by weather, environment, or even when positioning sometimes
Between it is long or positioning failure.The characteristics of GSM time services is that real-time is of a relatively high, in data transmission procedure, is delayed small；Have the disadvantage
GSM time services are limited by GSM network operator, and some mobile communication carriers do not provide GSM time services service.The characteristics of NTP time services
It is that time real-time is higher, but is limited by GPRS network signal intensity, network delay is longer.For these reasons, now it is badly in need of
Develop a kind of embedded device time service method of the quick obtaining to correct time after powering that can allow.
The content of the invention
There is provided a kind of embedded device time service side based on priority in order to overcome the shortcomings of prior art presence by the present invention
Time service method in method, the present invention can realize that quick obtaining is to real-time highest UTC time value after embedded device start.
The present invention is achieved by the following technical solutions：A kind of embedded device time service method based on priority, its
Comprise the following steps：
1）Define GPS, GSM and NTP time service priority：GPS time services Time priority is set as P1, GSM time service time priorities
Level is P2, and NTP time services Time priority is P3；
2）Time service strategy after start：After embedded device start, this 3 kinds of time service modes of GPS, GSM and NTP initiate work simultaneously
Make, any time service mode is preferentially got after UTC time, and it is right to be performed as long as no the higher time service method of priority
RTC chip time service is acted, just the storage of this UTC time into embedded RTC chip；
3）If the time service source of high priority gets UTC time, then the time service request of low priority stops time service number immediately
According to acquisition, flowed with saving data traffic and consumption, until the time service source of highest priority was got after the time, stop whole time service
Strategy.
For example, after device power-up, GSM time services preferentially get UTC time, now, if gps time is not got,
The UTC time value is then write into RTC chip at once；Meanwhile, stop the request action of NTP time services, to save flow；Later, GPS
Time service also successfully gets UTC time, because GPS time service priority is higher, at this time, it may be necessary to which the UTC time is write into RTC cores
In piece.Further, since GPS is priority P 1, i.e. limit priority, now whole time service action is terminated.
GPS is the abbreviation of English Global Positioning System (global positioning system).
GSM is English Global System for Mobile communications（Global system for mobile communications）'s
Referred to as.
NTP is English Network Time Protocol（NTP）Abbreviation, it is in synchronizing network
The agreement of the time of each computer.
UTC is English Coordinated Universal Time（Coordinated Universal Time(UTC)）Abbreviation, when also known as the world unifies
Between, universal time, international coordination time.
RTC is English Real-Time Clock（Real-time clock）Abbreviation.
The beneficial effects of the invention are as follows：Invention describes a kind of GPS/GSM/NTP based on priority time services simultaneously are former
Reason, it is a kind of embedded device time service method based on priority, by the time service method in the present invention, can be allowed embedded
Equipment after powering quick obtaining to the time accuracy highest time service time.Pass through the time service method in the present invention, Ke Yishi
Quick obtaining is easy to embedded device especially Internet of Things to UTC real-time highest UTC time values after existing embedded device start
Between net equipment keep be in communication with each other synchronization, while also the logout for equipment in itself provide a reliable time according to
According to.It can be applied to the embedded electronic product of the accurate real-time UTC time of institute's quick offer in need.
Brief description of the drawings
Fig. 1 is the particular flow sheet of the embedded device time service method of the invention based on priority.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in figure 1, a kind of embedded device time service method based on priority, it comprises the following steps：1）Definition
GPS, GSM and NTP time service priority：GPS time services Time priority is set as P1, GSM time services Time priority is P2, NTP
Time service Time priority is P3；2）Time service strategy after start：After embedded device start, this 3 kinds of time services of GPS, GSM and NTP
Mode initiates work simultaneously, and any time service mode is preferentially got after UTC time, as long as no the higher time service of priority
Method was performed to be acted to RTC chip time service, just the storage of this UTC time into embedded RTC chip；3）If Gao You
The time service source of first level gets UTC time, then the time service request of low priority stops the acquisition of time service data immediately, to save number
Flowed according to flow and consumption, until the time service source of highest priority was got after the time, stop whole time service strategy.
For example, after device power-up, GSM time services preferentially get UTC time, now, if gps time is not got,
The UTC time value is then write into RTC chip at once；Meanwhile, stop the request action of NTP time services, to save flow；Later, GPS
Time service also successfully gets UTC time, because GPS time service priority is higher, at this time, it may be necessary to which the UTC time is write into RTC cores
In piece.Further, since GPS is priority P 1, i.e. limit priority, now whole time service action is terminated.
Finally it should be noted that above content is merely illustrative of the technical solution of the present invention, rather than to present invention protection
The limitation of scope, simple modification or equivalent substitution that one of ordinary skill in the art is carried out to technical scheme,
All without departing from the spirit and scope of technical solution of the present invention.
Claims (1)
1. a kind of embedded device time service method based on priority, it is characterised in that：Embedded based on priority sets
Standby time service method comprises the following steps：
1）Define GPS, GSM and NTP time service priority：GPS time services Time priority is set as P1, GSM time service time priorities
Level is P2, and NTP time services Time priority is P3；
2）Time service strategy after start：After embedded device start, this 3 kinds of time service modes of GPS, GSM and NTP initiate work simultaneously
Make, any time service mode is preferentially got after UTC time, and it is right to be performed as long as no the higher time service method of priority
RTC chip time service is acted, just the storage of this UTC time into embedded RTC chip；
3）If the time service source of high priority gets UTC time, then the time service request of low priority stops time service number immediately
According to acquisition, flowed with saving data traffic and consumption, until the time service source of highest priority was got after the time, stop whole time service
Strategy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321282.9A CN107196725A (en) | 2017-05-09 | 2017-05-09 | Embedded device time service method based on priority |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321282.9A CN107196725A (en) | 2017-05-09 | 2017-05-09 | Embedded device time service method based on priority |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107196725A true CN107196725A (en) | 2017-09-22 |
Family
ID=59873143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710321282.9A Pending CN107196725A (en) | 2017-05-09 | 2017-05-09 | Embedded device time service method based on priority |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107196725A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110023778A (en) * | 2017-10-12 | 2019-07-16 | 华为技术有限公司 | A kind of localization method and equipment |
| CN111310894A (en) * | 2020-02-10 | 2020-06-19 | 烟台持久钟表有限公司 | Large clock source detection method based on NB-IoT |
| WO2020134810A1 (en) * | 2018-12-25 | 2020-07-02 | 维沃移动通信有限公司 | Methods for acquiring and sending time information, terminal and network device |
| CN111597100A (en) * | 2020-07-24 | 2020-08-28 | 成都智明达电子股份有限公司 | Embedded system fault log recording and analyzing method |
| CN112769517A (en) * | 2021-01-14 | 2021-05-07 | 武汉光庭信息技术股份有限公司 | T-BOX time synchronization method and device |
| CN113271169A (en) * | 2021-04-27 | 2021-08-17 | 东风汽车集团股份有限公司 | Vehicle time service method and system based on wireless communication terminal |
| CN113890663A (en) * | 2021-09-24 | 2022-01-04 | 重庆长安新能源汽车科技有限公司 | Domain controller time synchronization management method and system and vehicle |
| CN116243586A (en) * | 2023-02-01 | 2023-06-09 | 岚图汽车科技有限公司 | Vehicle time correction method and related equipment |
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| CN2631154Y (en) * | 2002-11-08 | 2004-08-04 | 上海欣泰通信技术有限公司 | Exchange board time supply device |
| CN103001759A (en) * | 2012-11-23 | 2013-03-27 | 北京东土科技股份有限公司 | Time synchronization method, system and device based on network |
| CN103580767A (en) * | 2012-08-01 | 2014-02-12 | 中国移动通信集团公司 | Clock synchronization method, device and network element of wireless communication network |
| CN104601317A (en) * | 2014-12-31 | 2015-05-06 | 南京大全自动化科技有限公司 | Synchronous clock device of FPGA and control method thereof |
| CN204392263U (en) * | 2014-12-31 | 2015-06-10 | 南京大全自动化科技有限公司 | The Synchronization Clock of a kind of FPGA |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2631154Y (en) * | 2002-11-08 | 2004-08-04 | 上海欣泰通信技术有限公司 | Exchange board time supply device |
| CN103580767A (en) * | 2012-08-01 | 2014-02-12 | 中国移动通信集团公司 | Clock synchronization method, device and network element of wireless communication network |
| CN103001759A (en) * | 2012-11-23 | 2013-03-27 | 北京东土科技股份有限公司 | Time synchronization method, system and device based on network |
| CN104601317A (en) * | 2014-12-31 | 2015-05-06 | 南京大全自动化科技有限公司 | Synchronous clock device of FPGA and control method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110023778A (en) * | 2017-10-12 | 2019-07-16 | 华为技术有限公司 | A kind of localization method and equipment |
| CN110023778B (en) * | 2017-10-12 | 2021-09-14 | 华为技术有限公司 | Positioning method and device |
| US11474259B2 (en) | 2017-10-12 | 2022-10-18 | Huawei Technologies Co., Ltd. | Positioning method and device |
| WO2020134810A1 (en) * | 2018-12-25 | 2020-07-02 | 维沃移动通信有限公司 | Methods for acquiring and sending time information, terminal and network device |
| CN111310894A (en) * | 2020-02-10 | 2020-06-19 | 烟台持久钟表有限公司 | Large clock source detection method based on NB-IoT |
| CN111310894B (en) * | 2020-02-10 | 2023-09-05 | 烟台持久钟表有限公司 | NB-IoT based large Zhong Shiyuan detection method |
| CN111597100A (en) * | 2020-07-24 | 2020-08-28 | 成都智明达电子股份有限公司 | Embedded system fault log recording and analyzing method |
| CN112769517A (en) * | 2021-01-14 | 2021-05-07 | 武汉光庭信息技术股份有限公司 | T-BOX time synchronization method and device |
| CN112769517B (en) * | 2021-01-14 | 2024-01-12 | 武汉光庭信息技术股份有限公司 | T-BOX time synchronization method and device |
| CN113271169A (en) * | 2021-04-27 | 2021-08-17 | 东风汽车集团股份有限公司 | Vehicle time service method and system based on wireless communication terminal |
| CN113890663A (en) * | 2021-09-24 | 2022-01-04 | 重庆长安新能源汽车科技有限公司 | Domain controller time synchronization management method and system and vehicle |
| CN116243586A (en) * | 2023-02-01 | 2023-06-09 | 岚图汽车科技有限公司 | Vehicle time correction method and related equipment |
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Application publication date: 20170922 |