CN105334728A - GPS based clock system for realizing high-precision synchronization of circuit system - Google Patents
GPS based clock system for realizing high-precision synchronization of circuit system Download PDFInfo
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- CN105334728A CN105334728A CN201510811032.4A CN201510811032A CN105334728A CN 105334728 A CN105334728 A CN 105334728A CN 201510811032 A CN201510811032 A CN 201510811032A CN 105334728 A CN105334728 A CN 105334728A
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- gps
- clock
- processing unit
- central processing
- functional module
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- 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
Abstract
The invention relates to a GPS based clock system for realizing high-precision synchronization of a circuit system. The clock system comprises a GPS receiver, a central processing unit, a CPLD (complex programmable logic device) functional module and a display module, wherein the GPS receiver realizes GPS signal receiving, decodes received information pulses, outputs decoded clock data information and transmits pulses per second to the CPLD functional module; the CPLD functional module outputs the pulses per second to the display module so as to realize a display function of a synchronizing clock; and the central processing unit realizes analysis and processing of GPS data information and releases time information of more than a second to the display module, and meanwhile, the central processing unit is connected with the CPLD functional module. The GPS based clock system for realizing high-precision synchronization of the circuit system makes use of a high-precision constant-temperature crystal oscillator to perform online monitoring and correction on random errors of a GPS clock, and has the advantages of simple structure, high precision, good stability, simple interface and low cost.
Description
Technical field
The present invention relates to the field of GPS, especially a kind of based on GPS realizing circuit system high-precise synchronization clock system.
Background technology
GPS is as navigation, time service and positioning system; there is time service precision high; the features such as civilian free and receiver cost is low, people are exploring and are utilizing the time synchronized performance of its brilliance to develop the various new granting of power system monitoring, protection and control.At that time, electric network fault analysis required that the temporal information of each microcomputer device was accurately within 1ms, and grid phase measurement is to the requirement of clock accuracy then up to μ s level, and travelling wave ranging and the requirement of traveling-wave protection to clock accuracy reach 1 μ s, even higher.First according to the synchronous clock technology overwhelming majority adopt the gps clock of the U.S., but these clock products or cost is high, or precision is too low, and GP clock is when satellite losing lock, and error reaches dozens or even hundreds of ms.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome above-mentioned middle Problems existing, provides a kind of based on GPS realizing circuit system high-precise synchronization clock system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of based on GPS realizing circuit system high-precise synchronization clock system, comprise GPS, CPU (central processing unit), CPLD functional module and display module, described GPS realizes the reception of gps signal, docking is received information pulse and is decoded, export the clock data information of decoding, and send pulse per second (PPS) to CPLD functional module, the Presentation Function that display module realizes synchronous clock is exported in the pulse per second (PPS) of CPLD functional module, described CPU (central processing unit) realizes the analysis to gps data information, process, issue the temporal information of second more than to display module, simultaneously, CPU (central processing unit) is connected with CPLD functional module.
Described CPU (central processing unit) is also connected with storer and clock chip.
Described CPU (central processing unit) is also connected with house dog.
The invention has the beneficial effects as follows: described one is based on GPS realizing circuit system high-precise synchronization clock system, High Accuracy Constant Temperature crystal oscillator is utilized to carry out on-line monitoring and correction to the stochastic error of gps clock, and it is simple to have structure, precision is high, the simple and low cost and other advantages of good stability, interface.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is a kind of structural representation based on GPS realizing circuit system high-precise synchronization clock system of entirety of the present invention.
Accompanying drawing acceptance of the bid note is described below: 1, GPS, and 2, CPU (central processing unit), 3, CPLD functional module, 4, display module, 5, storer, 6, clock chip, 7, house dog.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
One is as shown in Figure 1 based on GPS realizing circuit system high-precise synchronization clock system, comprise GPS 1, CPU (central processing unit) 2, CPLD functional module 3 and display module 4, GPS 1 realizes the reception of gps signal, docking is received information pulse and is decoded, export the clock data information of decoding, and send pulse per second (PPS) to CPLD functional module 3, the Presentation Function that display module realizes synchronous clock is exported in CPLD functional module 3 pulse per second (PPS), CPU (central processing unit) 2 realizes the analysis to gps data information, process, issue the temporal information of second more than to display module 4, simultaneously, CPU (central processing unit) 2 is connected with CPLD functional module 3, CPU (central processing unit) 2 is also connected with storer 5 and clock chip 6 and house dog 7.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (3)
1. one kind based on GPS realizing circuit system high-precise synchronization clock system, it is characterized in that: comprise GPS (1), CPU (central processing unit) (2), CPLD functional module (3) and display module (4), described GPS (1) realizes the reception of gps signal, docking is received information pulse and is decoded, export the clock data information of decoding, and send pulse per second (PPS) to CPLD functional module (3), the Presentation Function that display module realizes synchronous clock is exported in CPLD functional module (3) pulse per second (PPS), described CPU (central processing unit) (2) realizes the analysis to gps data information, process, issue the temporal information of second more than to display module (4), simultaneously, CPU (central processing unit) (2) is connected with CPLD functional module (3).
2. one according to claim 1 is based on GPS realizing circuit system high-precise synchronization clock system, it is characterized in that: described CPU (central processing unit) (2) is also connected with storer (5) and clock chip (6).
3. one according to claim 1 is based on GPS realizing circuit system high-precise synchronization clock system, it is characterized in that: described CPU (central processing unit) (2) is also connected with house dog (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510811032.4A CN105334728A (en) | 2015-11-21 | 2015-11-21 | GPS based clock system for realizing high-precision synchronization of circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510811032.4A CN105334728A (en) | 2015-11-21 | 2015-11-21 | GPS based clock system for realizing high-precision synchronization of circuit system |
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| Publication Number | Publication Date |
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| CN105334728A true CN105334728A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510811032.4A Pending CN105334728A (en) | 2015-11-21 | 2015-11-21 | GPS based clock system for realizing high-precision synchronization of circuit system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154816A (en) * | 2016-07-14 | 2016-11-23 | 南京国电南自电网自动化有限公司 | A kind of punctual method of automaton high accuracy |
| CN111954295A (en) * | 2017-12-19 | 2020-11-17 | 安科讯(福建)科技有限公司 | Time and precision considered synchronization maintaining method and system for TDD-LTE (time division Duplex-Long term evolution) equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6488274A (en) * | 1987-09-30 | 1989-04-03 | Toshiba Corp | Gps receiver |
| US5712867A (en) * | 1992-10-15 | 1998-01-27 | Nexus 1994 Limited | Two-way paging apparatus having highly accurate frequency hopping synchronization |
| CN1309486A (en) * | 2000-02-14 | 2001-08-22 | 东芝株式会社 | Time synchronizing method |
| CN2755626Y (en) * | 2004-12-16 | 2006-02-01 | 汪键 | Automatic scale and clock synchronizing system for maneuvering satellite station |
| CN101145864A (en) * | 2007-10-11 | 2008-03-19 | 华为技术有限公司 | A method and system for improving base clock performance |
| CN205067989U (en) * | 2015-09-07 | 2016-03-02 | 广西南宁至简至凡科技咨询有限公司 | Based on high accuracy synchronized clock system of GPS circuit system |
-
2015
- 2015-11-21 CN CN201510811032.4A patent/CN105334728A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6488274A (en) * | 1987-09-30 | 1989-04-03 | Toshiba Corp | Gps receiver |
| US5712867A (en) * | 1992-10-15 | 1998-01-27 | Nexus 1994 Limited | Two-way paging apparatus having highly accurate frequency hopping synchronization |
| CN1309486A (en) * | 2000-02-14 | 2001-08-22 | 东芝株式会社 | Time synchronizing method |
| CN2755626Y (en) * | 2004-12-16 | 2006-02-01 | 汪键 | Automatic scale and clock synchronizing system for maneuvering satellite station |
| CN101145864A (en) * | 2007-10-11 | 2008-03-19 | 华为技术有限公司 | A method and system for improving base clock performance |
| CN205067989U (en) * | 2015-09-07 | 2016-03-02 | 广西南宁至简至凡科技咨询有限公司 | Based on high accuracy synchronized clock system of GPS circuit system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154816A (en) * | 2016-07-14 | 2016-11-23 | 南京国电南自电网自动化有限公司 | A kind of punctual method of automaton high accuracy |
| CN106154816B (en) * | 2016-07-14 | 2019-04-16 | 南京国电南自电网自动化有限公司 | A kind of punctual method of automatic device high-precision |
| CN111954295A (en) * | 2017-12-19 | 2020-11-17 | 安科讯(福建)科技有限公司 | Time and precision considered synchronization maintaining method and system for TDD-LTE (time division Duplex-Long term evolution) equipment |
| CN111954295B (en) * | 2017-12-19 | 2023-03-31 | 安科讯(福建)科技有限公司 | Time and precision considered synchronization maintaining method and system for TDD-LTE (time division Duplex-Long term evolution) equipment |
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Application publication date: 20160217 |