CN103105613B - Method and device for signal source selection - Google Patents
Method and device for signal source selection Download PDFInfo
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- CN103105613B CN103105613B CN201110352027.3A CN201110352027A CN103105613B CN 103105613 B CN103105613 B CN 103105613B CN 201110352027 A CN201110352027 A CN 201110352027A CN 103105613 B CN103105613 B CN 103105613B
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Abstract
The invention discloses a method and a device for signal source selection. The method comprises that when multiple channels of signal sources are accessed, whether an alarm exists in each channel of a signal source is detected; and according to an alarm detection result and preset configuration information, a current optimal signal source in the signal sources is determined. According to the method and the device, the effect that under the condition of access of the multiple channels of the signal sources, a user can select the optimal signal source for access so that integral performance of a system is improved and meanwhile user experience is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method for selecting signal source and device.
Background technology
With the development in epoch, location technology has been widely used in life, for the whole world being most widely used
For alignment system (Global Positioning System, referred to as GPS), it is one and is defended by covering the whole world 24
The satellite system of star composition.This system can ensure that at any time, and on the earth, any point can observe 4 simultaneously
Satellite, to ensure that satellite can collect longitude and latitude and the height of this observation station, to realize navigation, positioning, the function such as time service.
GPS can also be applied to time service calibrating frequency, such as electric power, post and telecommunications, the time synchronized of network such as communication, correct time award into, accurate
Really frequency award into etc., in synchronizing network engineer applied, range is wider.
For gps signal, it is a kind of discrete, one second signal once.With continuous signal, alarm is occurring
When can be immediately detected alarm presence different, when gps signal abnormal it is necessary to during through one section of acknowledged alarm
Between just can judge whether alert.GPS interface is divided into two kinds in physics model：One kind is gps antenna interface, and another kind is
General pulse per second (PPS) (1 pulse per second, referred to as 1PPS)+Time of Day (Time of Day, referred to as TOD) connects
Mouthful, i.e. 1PPS+TOD interface.For antennal interface, it is come process signal by a codec chip, works as link
When breaking down, chip can maintain transmission 1PPS signal, so would not switch.And to general 1PPS
+ TOD interface, when detection alarm, not only 1PPS to be detected whether there is exception, also will detect that TOD message whether there is
Abnormal, so judging that the condition that alarm exists has following three kinds of situation situations：A () does not have 1PPS signal or 1PPS signal to lose
Lose；B () has 1PPS signal, but in TOD message, pulse per second (PPS) status display 1PPS signal is unavailable；C () has TOD message, but
Message does not contain temporal information.In existing apparatus, the above-mentioned alarm detecting can only realize alarm report function, occurs in link
During fault, there is no corresponding protective measure.
In actual networking application, positioner present in prior art (for example, GPS positioning device), typically only connect
Enter a signal source (for example, gps signal source), but in order to realize defencive function, also have the applied field accessing two signal sources
Scape.When accessing multiple signal source it is impossible to differentiate the quality of each road signal source, the signal source of therefore often cut-in quality difference.
Content of the invention
For in correlation technique when accessing multiple signal source it is impossible to differentiate the quality of each road signal source, therefore often
The problem of the signal source of cut-in quality difference, the invention provides a kind of method for selecting signal source and device, above-mentioned at least to solve
Problem.
According to an aspect of the invention, it is provided a kind of method for selecting signal source, including：Connect when there is multipath signal source
Fashionable, detect that every road signal source whether there is alarm；According to alarm detection result and predetermined configurations information determine in signal source when
Front optimum signal source.
According to a further aspect in the invention, there is provided a kind of signal source selection device, including：Detection module, for depositing
When multipath signal source accesses, detect that described in every road, signal source whether there is alarm；Determining module, for tying according to alarm detection
Fruit and predetermined configurations information determine currently optimum signal source in described signal source.
By the present invention, the warning information of the multipath signal source being accessed using detection, and according to alarm detection result and pre-
Determine the method that configuration information determines currently optimum signal source in signal source, solve in correlation technique when the multiple signal sources of access
When it is impossible to differentiate the quality of each road signal source, the problem of the therefore often signal source of cut-in quality difference, and then user can be made
Select the signal source of optimum in the case that multipath signal source accesses, improve the overall performance of system, also improve simultaneously
Consumer's Experience.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of method for selecting signal source according to embodiments of the present invention；
Fig. 2 is the flow chart of method for selecting signal source according to the preferred embodiment of the invention；
Fig. 3 is the structured flowchart of signal source selection device according to embodiments of the present invention；
Fig. 4 is the structured flowchart of the signal source selection device according to the preferred embodiment of the present invention one；
Fig. 5 is the structured flowchart of the signal source selection device according to the preferred embodiment of the present invention two.
Specific embodiment
To describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.
Fig. 1 is the flow chart of method for selecting signal source according to embodiments of the present invention, as shown in figure 1, this signal source selects
Method comprises the following steps：
Step S102, when there is multipath signal source access, detects that every road signal source whether there is alarm；
Step S104, determines the current optimum signal in signal source according to alarm detection result and predetermined configurations information
Source.
By the present embodiment, the warning information of the multipath signal source being accessed using detection, and according to alarm detection result and
The method that predetermined configurations information determines the current optimum signal source in signal source, solves in correlation technique when the multiple letters of access
It is impossible to differentiate the quality of each road signal source during number source, the problem of the therefore often signal source of cut-in quality difference, and then can make
User selects currently optimum signal source in the case of multipath signal source access, improves the overall performance of system, simultaneously
Also improve Consumer's Experience.
In the above-described embodiments, above-mentioned predetermined configurations information can include：The selection mode of signal source and signal source excellent
First level, wherein, this selection mode can also include：Artificial selection's mode and unartificial selection mode (are referred to as automatically selecting
Select mode).In implementation process, artificial selection's mode can be manual intervention selection signal source, and unartificial selection mode is permissible
It is automatic selecting signal source, during setting, the priority of artificial selection's mode can be higher than unartificial selection.By carrying
Selection mode for signal source and the priority of signal source, can make system has more flexible selectivity, Consumer's Experience
Can increase therewith.
Preferably, when selection mode is for artificial selection mode, step S104 can include following process：
(1) respond the signal source selection instruction of user, determining in signal source needs the signal source of selection；
(2) when the signal source needing selection does not have alarm, it is currently optimum letter that determination needs the signal source of selection
Number source.
In implementation process, if there is alarm in the artificial signal source selecting, system can point out user again to select
Select the signal source not alerted, the mode of prompting can be can also to be to show by image by sound.When user selects again
During selecting, repeat the process of above-mentioned selection and alarm, till user chooses the signal source not alerted.Implementing
During or system during initial selection just exclusion there is the signal source of alarm, upon a selection of the user, permissible
Choose at random, as long as the signal source chosen is all the signal source not alerted.The setting of artificial selection's mode, it is possible to use family
Arbitrarily selection signal source, increased the maintainability of synchronizing network, facilitates user to carry out intervention operation.
Preferably, when selection mode is for unartificial selection mode (automatically selecting), step S104 can be wrapped further
Include following process：
(1) according to the priority of signal source, the signal source that there is not alarm in signal source is ranked up；
(2) the current optimum signal source in signal source is determined according to ranking results.
In implementation process, because each road signal source that alarm detection result is shown as existing alarm is second-rate,
Do not select such signal source as final reference signal source, each road signal source that there is not alarm is according to priority ranked up.
Priority can be arranged it is also possible to be arranged by order from small to large by descending order, no matter be pressed which kind of side
Formula arranges, and the signal source all selecting priority maximum is as there being signal source most.The setting of unartificial selection mode, when user is no
When method selects, system can select the signal source of a road optimum as input for it, be currently accessed signal go wrong or
When link failure, effectively can carry out pretection switch, make system more intelligent.
During being preferable to carry out, above-mentioned predetermined configurations information can also include：The confirmation that alarm produces and alarm disappears
Time, wherein, before detecting that every road signal source whether there is alarm, can further include following process：
(1) multiple ports for receipt signal source are configured；
(2) selection mode of the priority, acknowledging time and signal source of setting signal source.
For example, above-mentioned port can be 1PPS+TOD interface.During being preferable to carry out, detect whether every road signal source deposits
One below can be included in alarm：
(1) if the 1PPS signal of one or more signal source of signal source does not exist it is determined that this one or more letter
There is alarm in number source；
(2) if the 1PPS letter that in the TOD message of one or more signal source of signal source, pulse per second (PPS) status display exists
Number unavailable it is determined that there is alarm in this one or more signal source；
(3) if TOD message present in one or more signal source of signal source do not contain temporal information it is determined that this one
There is alarm in road or multipath signal source.
During being preferable to carry out, above-mentioned signal source can be the most widely used gps signal source.Below with the most normal
Above-mentioned preferred implementation is further described as a example gps signal source.
Fig. 2 is the flow chart of method for selecting signal source according to the preferred embodiment of the invention.As shown in Fig. 2 this signal source
System of selection includes following process：
Step S202, the port of GP configuring S signal source.
Wherein, GPS reference source is accessed in the multiple GPS port of configuration, and this GPS port refers to 1PPS+TOD interface.If it is desire to
Equipment has multiple 1PPS+TOD ports to access GPS reference source, then be configured to allow signal input by each port.
Step S204, configuration parameter.
Wherein, the parameter of configuration mainly includes priority, alarm produces and alarm disappearance acknowledging time and source selecting party
Formula.
Preferably, the priority of every road gps signal is set, and this priority is used to identify the mark of every road clock source.Excellent
First level is usually to be ranked up according to certain rule, during realizing, is ranked up according to positive integer is descending, numeral is got over
It is little that to represent priority higher.
Preferably, setting alarm produces and alarm disappearance acknowledging time, and wherein, this acknowledging time is in seconds, uses
To avoid the generation of error detection alarm and a period of time of disappearance.Because the discreteness of TOD message, the detection to alarm needs
There is an acknowledging time.
Preferably, setting source selection mode, wherein, this selection mode mainly includes artificial selection's mode and unartificial choosing
Select mode (automatically selecting mode), can be higher than, to arrange the priority of artificial selection's mode, the mode of automatically selecting.
Step S206, query warning.Every road is accessed with signal or port whether there is alarm poll detection, and alerted
Process.In implementation process, judge that the condition that alarm exists includes one below：
(1) 1PPS or 1PPS is not had to lose；
(2) there is 1PPS, but in TOD message, pulse per second (PPS) status display 1PPS is unavailable；
(3) there is TOD message, but message does not contain temporal information.
Step S208, selects gps signal source.The testing result of step S206 is foundation, simultaneously according to user setup, to institute
The quality having signal source is ranked up, and selects road Optimal Signals.
Wherein, if carrying out the selection of GPS reference source in the way of manually participating in selection, in the feelings being not detected by alarm
Under condition, the gps signal specified is selected to input as source, and the search of termination signal source list；
If carrying out the selection of GPS input source in the way of automatically selecting, according to whether there is alarm and priority
Height be ranked up, if there is alarm, then necessarily do not select this road signal as final reference source, if there is no announcement
Alert, then there is not the priority of the reference source of alarm in more each road, and is ranked up, and selects a road optimum according to ranking results
Signal source is as input.
After having executed above-mentioned steps, enter new alarm implementation procedure next time, you can with repeated execution of steps S206
To S208, such that it is able to currently optimum signal source is selected again according to current practice.
Fig. 3 is the structured flowchart of signal source selection device according to embodiments of the present invention.As shown in figure 3, the choosing of this signal source
Select device to include：
Detection module 10, for when there is multipath signal source access, detecting that every road signal source whether there is alarm；
Determining module 20, is connected with detection module 10 or couples, for according to alarm detection result and predetermined configurations information
Determine the current optimum signal source in signal source.
In above-mentioned signal source selection device, determining module 20 is joined with predetermined according to the alarm detection result of detection module 10
Confidence breath determines the current optimum signal source in signal source, and then user can be made to select in the case of multipath signal source access
Select out currently optimum signal source, improve the overall performance of system, also improve Consumer's Experience simultaneously.
Preferably, as shown in Figure 4 and Figure 5, above-mentioned signal source selection device can also include：
Configuration module 30, for configuring multiple ports for receipt signal source；
Setup module 40, is connected with configuration module 30 and detection module 10 or couples, for arranging predetermined configurations information, its
In, predetermined configurations information includes：The selection of the priority of signal source, the acknowledging time that alarm produces and alarm disappears and signal source
Mode.
Preferably, as shown in figure 4, above-mentioned determining module 20 may further include：
First determining unit 202, for when the selection mode of signal source is artificial selection mode, responding the signal of user
Source selection instruction, determining in signal source needs the signal source of selection；
Second determining unit 204, is connected with the first determining unit 202 or couples, in the signal source needing selection not
When there is alarm, it is currently optimum signal source that determination needs the signal source of selection.
Preferably, as shown in figure 5, determining module 20 may further include：
Sequencing unit 206, for when the selection mode of signal source is unartificial selection mode (automatically selecting mode), pressing
Priority according to signal source is ranked up to the signal source that there is not alarm in signal source；
3rd determining unit 208, is connected with sequencing unit 206 or couples, for being determined in signal source according to ranking results
Current optimum signal source.
Signal source selection device shown in Fig. 4 is a kind of preferred signal source selection device, when the selection mode of signal source
During for artificial selection mode, this device can determine currently optimum signal source according to the intervention of user.Signal shown in Fig. 5
Source selecting device is another kind of preferably signal source selection device, when the selection mode of signal source be unartificial selection mode (from
Dynamic selection mode) when, this device can be determined currently according to the signal source that priority size does not have alarm from signal source
Optimum signal source.
To sum up, the above-described embodiment providing by the present invention, by providing the method in manual intervention selection signal source and leading to
The method crossing the setting of the detection to alarm and priority, accomplishes to select the optimum conduct in a road defeated from multipath signal source
Enter, in the case of breaking down in signal source, also can carry out pretection switch, effectively prevent gps clock or time synchronized path
Interruption.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Computing device realizing, they can concentrate on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to they are stored
To be executed by computing device in the storage device, and in some cases, can be with different from shown in order execution herein
The step going out or describing, or they are fabricated to respectively each integrated circuit modules, or by the multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of method for selecting signal source is it is characterised in that include：
When there is multipath signal source access, detect that described in every road, signal source whether there is alarm；
Currently optimum signal source in described signal source is determined according to alarm detection result and predetermined configurations information；
Wherein, described predetermined configurations information includes：The selection mode of described signal source and the priority of described signal source, wherein,
Described selection mode includes：Artificial selection's mode and unartificial selection mode；
When described selection mode is artificial selection mode, described signal is determined according to alarm detection result and predetermined configurations information
Current optimum signal source in source includes：The signal source selection instruction of response user, determines in described signal source and needs to select
The signal source selected；When the described signal source needing selection does not have alarm, determine that the described signal source needing selection is described
Currently optimum signal source；
Described predetermined configurations information also includes：The acknowledging time that alarm produces and alarm disappears, is detecting signal source described in every road
Before alarm, also include：Configure multiple ports for receiving described signal source；The preferential of described signal source is set
The selection mode of level, described acknowledging time and described signal source；
Described port is 1PPS+TOD interface.
2. method according to claim 1 it is characterised in that when described selection mode be unartificial selection mode when, root
Determine that according to alarm detection result and predetermined configurations information the current optimum signal source in described signal source includes：
Priority according to described signal source is ranked up to the signal source that there is not alarm in described signal source；
Determine the current optimum signal source in described signal source according to ranking results.
3. method according to claim 1 it is characterised in that detect every road described in signal source with the presence or absence of alarm include with
One of lower：
If the 1PPS signal of one or more signal source of described signal source does not exist it is determined that this one or more signal source
There is alarm；
If the 1PPS signal that in the TOD message of one or more signal source of described signal source, pulse per second (PPS) status display exists is not
Can use it is determined that this one or more signal source has alarm；
If TOD message present in one or more signal source of described signal source does not contain temporal information it is determined that this road
Or there is alarm in multipath signal source.
4. according to the method in any one of claims 1 to 3 it is characterised in that described signal source is gps signal source.
5. a kind of signal source selection device is it is characterised in that include：
Detection module, for when there is multipath signal source access, detecting that described in every road, signal source whether there is alarm；
Determining module, for determining currently optimum signal in described signal source according to alarm detection result and predetermined configurations information
Source；
Described determining module includes：First determining unit, for described signal source selection mode be artificial selection mode when,
The signal source selection instruction of response user, determining in described signal source needs the signal source of selection；Second determining unit, is used for
When the described signal source needing selection does not have alarm, determine that the described signal source needing selection is described current optimum letter
Number source；
Described signal source selection device also includes：Configuration module, for configuring multiple ports for receiving described signal source；If
Put module, for arranging described predetermined configurations information, wherein, described predetermined configurations information includes：The priority of signal source, alarm
Produce and the acknowledging time of alarm disappearance and the selection mode of signal source；Described port is 1PPS+TOD interface.
6. device according to claim 5 is it is characterised in that described determining module includes：
Sequencing unit, for when the selection mode of described signal source is unartificial selection mode, excellent according to described signal source
First level is ranked up to the signal source that there is not alarm in described signal source；
3rd determining unit, for determining the current optimum signal source in described signal source according to ranking results.
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| CN201110352027.3A CN103105613B (en) | 2011-11-09 | 2011-11-09 | Method and device for signal source selection |
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| CN201110352027.3A CN103105613B (en) | 2011-11-09 | 2011-11-09 | Method and device for signal source selection |
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| CN104682362A (en) * | 2015-03-06 | 2015-06-03 | 南方电网科学研究院有限责任公司 | Control method for automatically selecting effective signal |
| CN105281035B (en) * | 2015-05-28 | 2019-03-01 | 维沃移动通信有限公司 | The antenna switching method and its mobile terminal of mobile terminal |
| CN105322517A (en) * | 2015-08-28 | 2016-02-10 | 广西电网有限责任公司电力科学研究院 | Control method for automatically choosing effective signal |
| CN105867859A (en) * | 2016-03-25 | 2016-08-17 | 广东威创视讯科技股份有限公司 | A splicing wall window windowing method and device |
| CN111427074B (en) * | 2020-06-10 | 2020-10-09 | 天津七一二通信广播股份有限公司 | GBAS-based high-reliability time system service equipment |
| CN111818384A (en) * | 2020-06-30 | 2020-10-23 | 北京市地铁运营有限公司地铁运营技术研发中心 | Display screen control method, control device, control system and computer-readable storage medium for rail transit |
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| CN102004258B (en) * | 2010-09-09 | 2012-10-10 | 中国计量科学研究院 | Time frequency transfer method and receiver based on multiple global navigation satellite system (GNSS) integration |
| CN201928290U (en) * | 2010-11-25 | 2011-08-10 | 江西省电力公司信息通信中心 | GPS (global positioning system), Beidou and pulse multi-benchmark PTP (picture transfer protocol) master clock |
| CN102123024B (en) * | 2011-03-17 | 2015-06-03 | 中兴通讯股份有限公司 | Method, system and device for switching and selecting clock source equipment |
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| CN2786640Y (en) * | 2005-04-30 | 2006-06-07 | 中国科学院国家授时中心 | GPS and Big Dipper receiver signal auto and manual switching equipment |
| CN201007739Y (en) * | 2006-10-19 | 2008-01-16 | 中国人民解放军总装备部汽车试验场 | Beidou and GPS navigation information syncretizing machine |
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