CN104683090A - Expandable clock monitoring device and method - Google Patents
Expandable clock monitoring device and method Download PDFInfo
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- CN104683090A CN104683090A CN201510120147.9A CN201510120147A CN104683090A CN 104683090 A CN104683090 A CN 104683090A CN 201510120147 A CN201510120147 A CN 201510120147A CN 104683090 A CN104683090 A CN 104683090A
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Abstract
The invention discloses a method for monitoring a time synchronization device in real time. A monitoring device monitors a time synchronization signal output by the time synchronization device in real time; the time synchronization signal is compared with local standard time of the monitoring device to obtain a deviation; when the deviation is smaller than a certain threshold value, a time service of the time synchronization device is defaulted to be correct; when the deviation is excessively large, the abnormal time service of the time synchronization device is responded to, and alarming is carried out so as to ensure normal operation of an integral clock synchronization system. The monitoring device consists of a main control card, a backboard and a monitoring card; a real-time hardware monitoring function of an external time synchronization signal is realized at the monitoring card; the monitoring card supports multichannel parallel monitoring and monitoring of various time synchronization signals. By expansion of the passive backboard, the device can support parallel monitoring of a plurality of monitoring cards, so that capacity of monitoring channels and diversification of monitoring types are greatly expanded. All the cards adopt the modular design; the time synchronization signal monitoring device, which is convenient and is low in cost, is provided for a client.
Description
Technical field
The present invention relates to time synchronized monitoring device, be specifically related to signal monitoring device lock in time of a kind of many timing codes and easily extensible capacity.
Background technology
At present, the time synchronism apparatus based on various timing code has a wide range of applications in various industry, as subway system, high-speed railways, electric power system, intelligent hospital, intelligent transportation, intelligent city, Bank Danamon system etc.Each industry is according to residing environment and demand, and the time synchronizing signal form of needs is also not quite similar, and required amount is also the same not to the utmost.
Along with information technology and the development of electronic product and the extensive use in all trades and professions, deep transformation also be there occurs to the requirement of time synchronized and demand.The requirement of application to the accuracy of the lock in time provided of present industry-by-industry is more next high, and in other one side, to whole lock in time, the fail safe of system is also more and more stricter.In whole lock in time system, not only to have and precise time synchronization signal can be provided, also want can real-time ensuring time synchronism apparatus provide lock in time signal be accurately, this just needs a set of independently device can carry out Real-Time Monitoring to time synchronized time service device in real time, guarantee that time service device normally runs, and at time service device when generation is abnormal, there is alarm failure.
In view of this, the invention provides and a kind ofly monitor the time accuracy of many time synchronizing signals and the method for synchronizing information accuracy, the quality of the output signal of Real-Time Monitoring time service device lock in time.Another target of the present invention be can provide can support multiple time output type, independently, real-time, jumbo lock in time real time monitoring signals device.
Summary of the invention
The invention provides a kind of time synchronizing signal method of measurement and the device of supporting the easily extensible capacity of multiple timing code.That includes and have the method for self-defined communication and the backboard of expansion slot and multiple function card, every block function card can support hot plug, arbitrarily configures.Mainly there are provided a kind of method of monitoring multi-channel Time synchronizing signal that can be real-time and provide a kind of method of master control and monitoring card large data communication in real time.
The present invention is implemented as follows: one piece of monitoring card can measure multi-channel Time synchronizing signal in real time.Different time synchronizing signals is exported according to different time synchronism apparatus, select corresponding time signal monitoring card, receive external timing signal reference signal as measuring basis signal in the circuit of monitoring card simultaneously, and all external timing signal are sent to decoder module, decoder module can to external timing signal through row decoding according to time signal form, obtain temporal information, and with the local reference time compares, more laggard line time information storage and subsequent treatment, due to the parallel receive that design adopts, parallel decoding, receive while decode, so the systematic error of each Measurement channel is the same, and be minimum.
A kind of method with self-defined communication it require that main control card and monitoring card are realized by self-defining communication protocol.Send and adopt bus structures pattern, receive and adopt autonomous channel.Main control card is with the mode time-sharing send control command of training in rotation to monitoring card, and monitoring card connects main control card by point-to-point mode, to transmit the measurement parameter on monitoring card in real time.Every block monitoring card can both measure multichannel external time synchronizing signal in real time, and the data volume of generation is larger, if the measurement data on each road all adopts independent communication port, then to system cost, power system capacity all can produce waste.So present invention employs a kind of self-defining communication protocol.The measurement data of monitoring card is processed.Monitoring card just realizes hard ware measure, and deviation calculates, and measurement data comprises former external time information and also comprises and local standard time deviation, and this mode can improve measurement accuracy, and alleviates main control card load.Measurement data, by software process, is broken into packet by monitoring card, by self-defining agreement, sends main control card to.In order to allow the data measured real-time be presented at monitoring of software, main control card adopts the measurement data of the parallel every block of reception, sends to monitoring of software in time, sends abnormal signal lock in time at time synchronism apparatus, can response abnormality in time.
Accompanying drawing explanation
Fig. 1 is monitoring device schematic diagram of the present invention.
Fig. 2 is monitoring card high-level schematic functional block diagram of the present invention.
Fig. 3 is main control card high-level schematic functional block diagram of the present invention.
Embodiment
In order to make object of the present invention, clearly, below in conjunction with accompanying drawing, the present invention is described in further detail for technical scheme and advantage.
In the present invention, be applicable to multi-path real-time monitoring, monitoring capacity and monitoring time synchronizing signal can flexible configuration as required.In Fig. 1, time synchronized monitoring device provided by the invention comprises main control card+backboard+polylith monitoring card.Fig. 3 is the functional block diagram of main control card.Comprise measurement data receiver module, measurement data sending module, measured data processing module, local standard time generation module, and alarm module.
The measurement data that in the present invention, the measurement data receiver module of main control card is sended over by self-defining communication protocol reception monitoring card, communication device adopts programming device to realize, and can receive multichannel data by real-time parallel.Measured data processing module reads the data of reception in real time, adopts network interface to send host computer monitoring of software to by measurement data sending module the design.Main control card there is warning device, when monitoring external timing signal exception, alarm signal can occur.
In the present invention, main control card is except the reception of monitoring card data and uploading of Monitoring Data, and another one important process is just to provide this locality and marks fiducial time.The precision of local reference time and quality directly affect the monitoring accuracy of monitoring equipment.The local reference time adopts independent input source, adopts GPS and BD as the accurate input source of first-selection (monitoring one, secondary time synchronism apparatus), and light B code (monitoring secondary time synchronism apparatus) also can be adopted as reference time source.Main control card is by obtaining the time of satellite, and produce local standard time PPS+TOD, the local standard time passes to every block monitoring card by communication bus.
In the present invention, monitoring card is responsible for the monitoring function of time synchronizing signal.Every block monitoring card is responsible for the monitoring of the external time code of multichannel.As Fig. 2, the functional module that every block monitoring card comprises: external time code receiver module, local standard time receiver module, external time code processing module, cache module, Monitoring Data sending module.In order to the timing code of the outside multichannel of Real-Time Monitoring, monitoring card adopts programming device+ARM.
In the present invention, the monitoring of multiple timing code supported by monitoring device, external time code receiver module supports the input of the timing code of different electrical characteristic, by external time code receiver module, signal lock in time of different electrical characteristics is converted to the time signal of fiduciary level, such as time synchronism apparatus exports IRIG-B light signal, then need selective light B code monitoring card, by optical receiving circuit, obtain (LVTTL/LVCOMS etc.) B code of fiduciary level.This device one piece of light B code monitoring card supports 8 road light B code parallel monitorings.
All external timing signal are input to decoder module after being changed by receiving circuit, decoder module is while receive signal lock in time of external perimysium reference comment level, while decode according to timing code form, the light B coded signal that such as this device monitoring time synchronism apparatus exports, this device is by optical receiving circuit, and obtain fiduciary level Signal transmissions to decoder module, decoder module is according to the form of B code, by decoding light B code, obtain external standard time.It is synchronous that what decoder module was parallel received the decode for 8 tunnel external times.
Through decoder module, according to the external standard time obtained, external standard time and local standard time can compare by comparison module, in the time error of monitor input terminal with regard to real-time calculating external time synchronizing signal, farthest reduce the measure error of system.
The time error buffer memory of the external standard time of reception and survey can get off by cache module.The monitoring of each road has a cache module, guarantees the independence on each road of parallel monitoring.All Monitoring Data, finally all pass through data packing block, the external time information taken of one piece of monitoring card monitoring is become a packet, by self-defining agreement in the middle of this, defines the form of packet.Finally by sending module, temporal information bag is sent to main control card.
In sum, the present invention has the following advantages: (1), local clock module locking GPS/ Big Dipper satellite signal, provides local reference time source; (2), provide the method for real-time of parallel channel, guarantee the accuracy of multi-channel measurement; (3), the internal system communication protocol made by oneself, be various system flexible configuration monitoring capacity and monitoring time synchronizing signal type.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change made under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (7)
1. one kind realizes the method for monitoring time synchronizer, it is characterized in that: the time synchronizing signal of time synchronism apparatus time service and local standard time are made comparisons, the method comprises two steps: a) monitoring card receives external time synchronizing signal, and the agreement of time signal according to the time, decode time, obtain external standard time, b) monitoring card compares external standard time and local standard time.
2. the monitoring method according to right 1, it is characterized in that, the local standard time is the time that main control card acquisition gps satellite signal or Big Dipper satellite signal obtain, main control card sends the local standard time to each monitoring card, the external standard time of all monitorings with the local standard time for benchmark.
3. the monitoring card according to right 1 receives external time synchronizing signal, it is characterized in that: according to the electrical characteristic of different external time synchronizing signal, configure different monitoring cards, the receiving circuit on monitoring card, be converted into fiduciary level, be input between observation circuit.
4. the monitoring card decoding external time synchronizing signal according to right 1, it is characterized in that: external time synchronizing signal be converted to fiduciary level through receiving circuit, according to the form of timing code of external time synchronizing signal, decoder module can according to defined time format, decoding external time synchronizing signal obtains external standard time, so according to different timing code forms, different monitoring cards can be configured.
5. a device for monitoring time synchronizer, is characterized in that comprising main control card and polylith monitoring card by carrying out data communication between the expanded back panel of self-defined communication mode.
6. the device according to right 5, is characterized in that: polylith monitoring card, often opens monitoring card and can monitor 8 tunnel external time synchronizing signals simultaneously, configure different monitoring cards according to different time synchronizing signals.
7. the device according to right 5, it is characterized in that: self-defining communication mode between main control card and polylith monitoring card, the information of the external time of the monitoring on monitoring card all will send to main control card by self-defining mode, by self-defining communication mode, the reception data that main control card can walk abreast, but do not increase cost.
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| CN201510120147.9A CN104683090A (en) | 2015-03-19 | 2015-03-19 | Expandable clock monitoring device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395310A (en) * | 2017-07-28 | 2017-11-24 | 国电南瑞科技股份有限公司 | A kind of on-line monitoring optical signal direct measuring method and system based on time synchronized |
| CN109450584A (en) * | 2018-11-28 | 2019-03-08 | 上海东土远景工业科技有限公司 | Time measurement device and method |
| CN111984059A (en) * | 2020-07-31 | 2020-11-24 | 许继集团有限公司 | A PPS jump detection method and system for timing synchronization by a timing module |
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| CN201812155U (en) * | 2010-07-02 | 2011-04-27 | 上海汉鼎电力科技有限公司 | Satellite synchronous slave clock device |
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| CN103269263A (en) * | 2013-05-17 | 2013-08-28 | 浙江赛思电子科技有限公司 | Device and method for RS422/485 time code expanding output based on custom expansion clock and communication bus |
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2015
- 2015-03-19 CN CN201510120147.9A patent/CN104683090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101604142A (en) * | 2008-06-12 | 2009-12-16 | 湖北省电力试验研究院 | Time information detection method of output signal of satellite synchronous timing device |
| CN101771487A (en) * | 2008-12-31 | 2010-07-07 | 郑州威科姆科技股份有限公司 | Equipment for network time service precision detection and detection method using the detection equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107395310A (en) * | 2017-07-28 | 2017-11-24 | 国电南瑞科技股份有限公司 | A kind of on-line monitoring optical signal direct measuring method and system based on time synchronized |
| CN109450584A (en) * | 2018-11-28 | 2019-03-08 | 上海东土远景工业科技有限公司 | Time measurement device and method |
| CN111984059A (en) * | 2020-07-31 | 2020-11-24 | 许继集团有限公司 | A PPS jump detection method and system for timing synchronization by a timing module |
| CN111984059B (en) * | 2020-07-31 | 2022-08-26 | 许继集团有限公司 | PPS (polyphenylene sulfide) jump detection method and system for timing by time service module |
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Application publication date: 20150603 |