CN105353603A - Universal type time synchronization system and implementation method - Google Patents
Universal type time synchronization system and implementation method Download PDFInfo
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- CN105353603A CN105353603A CN201510874743.6A CN201510874743A CN105353603A CN 105353603 A CN105353603 A CN 105353603A CN 201510874743 A CN201510874743 A CN 201510874743A CN 105353603 A CN105353603 A CN 105353603A
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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
- G04R20/04—Tuning or receiving; Circuits therefor
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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
- G04R20/06—Decoding time data; Circuits therefor
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention relates to a universal time synchronization system and an implementation method. The universal time synchronization system includes a receiving part, a clock part and an output part; a GPS/BD receiver unit, a 2Mbit receiving unit and an optical fiber IRIG-B(DC) receiving unit of the receiving part, a network unit, a display unit and a power supply unit of the clock part, as well as a PPS (TTL) output unit, a PPS (idle contact) output unit, an NTP output unit, a PTP output unit, an optical fiber IRIG-B (DC) output unit, an RS232 output unit, an RS422 output unit and an alarm output unit of the output part are respectively connected with a main control unit of the clock part; and the main control part performs processing such as data rationality judgment, punctuality and data protocol conversion on GPS/BD, B code and 2M signals which are received by the receiving part in an ARM, an FPGA and a punctuality module. According to the universal time synchronization system and implementation method of the invention adopted, high-precision and fully-functional time service equipment can receive four kinds of time service source signals, namely, Beidou, GPS, optical fiber B code and 2M signals, and therefore, an original mode that time service and positioning can be realized only relying on wireless satellite signals can be realized, and a defect of excessive reliance on a wireless positioning system can be avoided.
Description
Technical field
The present invention relates to a kind of clock synchronization system, particularly the universal clock synchronization system of one and implementation method.
Background technology
All there is limitation in kind and the output interface form in existing clock synchronization system Received signal strength source, the problems such as the punctual precision under various mode of operation, working stability degree are unreliable, and punctual low precision, signal resolving ability and output interface versatility are not strong can not meet the demand of every field using function.
Summary of the invention
For overcoming the deficiencies in the prior art; the invention provides a kind of universal clock synchronization system and implementation method; concrete technical scheme is; a kind of universal clock synchronization system; comprise three parts; be respectively receiving unit, clock part, output, it is characterized in that: receiving unit comprises GPS/BD receiver unit, 2Mbit receiving element, optical fiber IRIG-B(DC) receiving element; Clock portion is divided and is comprised main control unit, network element, display unit, power supply unit; Output comprises PPS(TTL) output unit, PPS(idle contact) output unit, NTP output unit, PTP output unit, optical fiber IRIG-B(DC) output unit, RS232 output unit, RS422 output unit, alarm output unit; GPS/BD receiver unit, 2Mbit receiving element, optical fiber IRIG-B(DC) receiving element, network element, display unit, power supply unit, PPS(TTL) output unit, PPS(idle contact) output unit, NTP output unit, PTP output unit, optical fiber IRIG-B(DC) output unit, RS232 output unit, RS422 output unit, alarm output unit be all connected to clock part main control unit; Described clock portion parallel circuit connects: GPS/BD, B code that receiving unit receives by the main control unit of clock part, 2M signal carry out the judgement of data rationality, keep time in ARM, FPGA, punctual module, data protocol conversion process, part data enter ARM, the FPGA of network element, network voltage changing module enters output after carrying out procotol conversion, another part data through expanding module, fiber optic switching module, isolation module process enter output.
The step of implementation method comprises, and a, main control unit receive 4 kinds of signal sources, are respectively GPS, BD, IRIG-B(DC), 2Mbit, signal solution can be counted as TOD form and corresponding time harbour by each signal source receiving element;
B, main control unit select a kind of signal source according to the quality priority in the signal source switching command binding signal source that display unit is uploaded;
C, ARM convert TOD data to time message information and control information, a part exports through process such as expansion module, level conversion, light-coupled isolations, another part is to FPGA, FPGA receiving time information and corresponding timing code first-born one-tenth DC B code, FPGA can generate the PPS aimed at time harbour simultaneously, and DC B code exports with the pattern of optical fiber through isolation, opto-electronic conversion process at output unit;
D, punctual module receive carries out punctual process to PPS, then carries out the process such as level conversion, light-coupled isolation through output unit, exports with the form of Transistor-Transistor Logic level, idle contact;
E, network processing unit are by Flash Load System, and this system comprises NTP and PTP protocol software, after receiving the PPS signal of the UTC of master control ARM output, punctual module, through procotol packaging, isolation processing, export through RJ45.
Technique effect of the present invention is, high precision, global function time service equipment, can receive and resolve the Big Dipper, GPS, optical fiber B code, 2M signal 4 kinds of time service source signals, instead of original and rely on unlimited satellite-signal time service, locator meams, avoid the drawback of the unlimited positioning system of heavy dependence.
Accompanying drawing explanation
Fig. 1 is that present system connects block diagram.
Fig. 2 is clock portion parallel circuit theory diagram of the present invention.
Fig. 3 is present system working routine process flow diagram.
Embodiment
As shown in Figure 1, 2, a kind of universal clock synchronization system, comprises three parts, is respectively receiving unit, clock part, output, and receiving unit comprises GPS/BD receiver unit, 2Mbit receiving element, optical fiber IRIG-B(DC) receiving element; Clock portion is divided and is comprised main control unit, network element, display unit, power supply unit; Output comprises PPS(TTL) output unit, PPS(idle contact) output unit, NTP output unit, PTP output unit, optical fiber IRIG-B(DC) output unit, RS232 output unit, RS422 output unit, alarm output unit; Output, the GPS/BD receiver unit of receiving unit, 2Mbit receiving element, optical fiber IRIG-B(DC) receiving element, the network element of clock part, display unit, power supply unit, output PPS(TTL) output unit, PPS(idle contact) output unit, NTP output unit, PTP output unit, optical fiber IRIG-B(DC) output unit, RS232 output unit, RS422 output unit, alarm output unit be all connected to clock part main control unit; Described clock portion parallel circuit connects: the process such as GPS/BD, B code that receiving unit receives by the main control unit of clock part, 2M signal carry out the judgement of data rationality, keep time in ARM, FPGA, punctual module, data protocol conversion, part data enter ARM, the FPGA of network element, network voltage changing module enters output after carrying out procotol conversion, and another part data enter output through expanding the process such as module, fiber optic switching module, isolation module.
As shown in Figure 2 and Figure 3, the method that native system realizes time synchronized is, 1, master control receives 4 kinds of signal sources, is respectively GPS, BD, IRIG-B(DC), 2Mbit, signal solution can be counted as TOD form and corresponding time harbour by each signal source receiving element;
2, master control determines to select a kind of signal source according to the quality of display unit model selection and signal source jointly, then ARM converts TOD data to time message information and control information, a part exports through process such as expansion module, level conversion, light-coupled isolations, and another part is to FPGA;
3, FPGA receiving time information and corresponding timing code first-born one-tenth DC B code, FPGA can generate the PPS aimed at time harbour simultaneously;
4, DC B code exports with the pattern of optical fiber through process such as isolation, opto-electronic conversion at output unit;
5, punctual module receives and carries out punctual process to PPS, then carries out the process such as level conversion, light-coupled isolation through output unit;
6, network processing unit is by Flash Load System, and this system comprises NTP and PTP protocol software, after receiving the PPS signal of the UTC of master control ARM output, punctual module, through procotol packaging, isolation processing, exports through RJ45;
7, data communication is carried out in display unit and master control, by display screen and pilot lamp, duty is described on the one hand, receives extraneous instruction on the other hand control duty by button.
Feature exports PPS-TTL level, PPS-idle contact, network interface (NTP, PTP protocol), optical fiber IRIG-B(DC code by computing, process), RS232, RS422, warning, the information such as display.
Universal clock synchronization system provides manual key or network switching mode to carry out the switching of 4 kinds of mode of operations, comprises GPS, the Big Dipper, IRIG-B, 2M; The screen of front panel display unit and pilot lamp can show the state such as effective mode of operation, power supply, operation, pulse per second (PPS), alarm, external source input, receipts star number now in time; Also by the duty of uniting during network monitoring and locating information can be exported.New time synchro system rear panel is aviation connector IO interface: input interface is mainly divided into a north of a road bucket, the input of GPS high frequency, two-way optical fiber IRIG-B input, a road 2M to input; Output interface is mainly divided into four roads sky node PPS outputs, eight road Transistor-Transistor Logic level PPS outputs, the electric mouth NTP output of four tunnels, four road light mouth NTP outputs, the electric mouth PTP output in a road, a road light mouth PTP output, two-way optical fiber IRIG-B(DC code) export two-way RS232 output, a road RS422 output, a road warning output.Transistor-Transistor Logic level PPS time service precision is 1us, and empty node PPS time service precision is 3us; Network N TP time service precision is LAN (Local Area Network) 10ms, wide area network 500ms, and provide be no less than 8 different IP addresses can receiving network data simultaneously, comprise date-time, position, highly, the information such as input source, receipts star number, failure message, positioning states, the automatic time synchronizing function of WindowsXPE new time synchro system is provided; PTP time service precision is 200ns; Optical fiber IRIG-B(DC code) time service precision is 1us; The protocol data that RS232, RS422, the exportable user of warning require.When 4 kinds of time service sources all cannot work, can reach the punctual precision of 1us/h, under punctual state, the signal of various output interface all can normally export.
Clock synchronization system adopts 2u19 inch standard size cabinet, for closed case, in development, all carried out environmental stress screening test in production run, thermocycling, cyclic damp heat test, shock and vibration, normal temperature are checked, EMC test, salt-fog test, mould test, before and after test, indices test result all meets accuracy requirement, and this precision index all has top standard at home and abroad.New time synchro system instead of original and relies on unlimited satellite-signal time service, locator meams, avoids the drawback of the unlimited positioning system of heavy dependence.
Claims (2)
1. a universal clock synchronization system; comprise three parts; be respectively receiving unit, clock part, output; it is characterized in that: a kind of universal clock synchronization system; comprise three parts; be respectively receiving unit, clock part, output, it is characterized in that: receiving unit comprises GPS/BD receiver unit, 2Mbit receiving element, optical fiber IRIG-B receiving element; Clock portion is divided and is comprised main control unit, network element, display unit, power supply unit; Output comprises PPS output unit, the PPS output unit of idle contact, NTP output unit, PTP output unit, optical fiber IRIG-B output unit, RS232 output unit, RS422 output unit, the alarm output unit of Transistor-Transistor Logic level; The PPS output unit of GPS/BD receiver unit, 2Mbit receiving element, optical fiber IRIG-B receiving element, network element, display unit, power supply unit, Transistor-Transistor Logic level, the PPS output unit of idle contact, NTP output unit, PTP output unit, optical fiber IRIG-B output unit, RS232 output unit, RS422 output unit, alarm output unit are all connected to clock part main control unit; Described clock portion parallel circuit connects: GPS/BD, B code that receiving unit receives by the main control unit of clock part, 2M signal carry out the judgement of data rationality, keep time in ARM, FPGA, punctual module, data protocol conversion process, part data enter ARM, the FPGA of network element, network voltage changing module enters output after carrying out procotol conversion, another part data through expanding module, fiber optic switching module, isolation module process enter output.
2. a universal clock synchronization system implementation method, is characterized in that: the step of implementation method comprises,
A, main control unit receive 4 kinds of signal sources, are respectively GPS, BD, IRIG-B, 2Mbit, and signal solution can be counted as TOD form and corresponding time harbour by each signal source receiving element;
B, main control unit select a kind of signal source according to the quality priority in the signal source switching command binding signal source that display unit is uploaded;
C, ARM convert TOD data to time message information and control information, a part exports through process such as expansion module, level conversion, light-coupled isolations, another part is to FPGA, FPGA receiving time information and corresponding timing code first-born one-tenth DC B code, FPGA can generate the PPS aimed at time harbour simultaneously, and DC B code exports with the pattern of optical fiber through process such as isolation, opto-electronic conversion at output unit;
D, punctual module receive carries out punctual process to PPS, then carries out level conversion, light-coupled isolation process through output unit, exports with the form of Transistor-Transistor Logic level, idle contact;
E, network processing unit are by Flash Load System, and this system comprises NTP and PTP protocol software, after receiving the PPS signal of the UTC of master control ARM output, punctual module, through procotol packaging, isolation processing, export through RJ45.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773635A (en) * | 2016-12-27 | 2017-05-31 | 天津七六四通信导航技术有限公司 | A kind of time service precision detecting system and implementation method |
| CN106817183A (en) * | 2016-12-27 | 2017-06-09 | 天津七六四通信导航技术有限公司 | PTP precision time protocols time service module and implementation method in a kind of electric power time service |
| CN106850069A (en) * | 2017-02-16 | 2017-06-13 | 中国铁道科学研究院 | Data optical fiber cascade unit and system |
| CN107817676A (en) * | 2017-09-27 | 2018-03-20 | 中国科学院长春光学精密机械与物理研究所 | A kind of time terminal system |
| CN107896134A (en) * | 2017-11-15 | 2018-04-10 | 中国电子科技集团公司第三十二研究所 | High-precision modularized time synchronization equipment |
| CN110928176A (en) * | 2019-11-21 | 2020-03-27 | 北京计算机技术及应用研究所 | Multifunctional time service equipment supporting multiple time service technologies |
| CN112433466A (en) * | 2020-11-20 | 2021-03-02 | 北京无线电计量测试研究所 | Time code signal output system and method |
| CN112751640A (en) * | 2020-12-25 | 2021-05-04 | 北京航星机器制造有限公司 | Gigabit network NTP time server based on alternating current B code |
| CN112929089A (en) * | 2021-01-29 | 2021-06-08 | 无锡精全电气技术有限公司 | Communication signal transmission method, circuit and system |
| CN113391543A (en) * | 2021-05-11 | 2021-09-14 | 国网浙江省电力有限公司湖州供电公司 | Time synchronization system calibration device based on Beidou GPS |
| CN114070445A (en) * | 2021-11-09 | 2022-02-18 | 中国科学院近代物理研究所 | Distributed power supply timing calibrator and synchronous triggering method |
| US11675318B2 (en) | 2019-12-31 | 2023-06-13 | Continental Automotive Systems, Inc. | Multi-interface GPS time synchronization |
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Cited By (16)
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| CN106817183A (en) * | 2016-12-27 | 2017-06-09 | 天津七六四通信导航技术有限公司 | PTP precision time protocols time service module and implementation method in a kind of electric power time service |
| CN106817183B (en) * | 2016-12-27 | 2019-03-08 | 天津七六四通信导航技术有限公司 | PTP precision time protocol time service module and implementation method in a kind of electric power time service |
| CN106773635A (en) * | 2016-12-27 | 2017-05-31 | 天津七六四通信导航技术有限公司 | A kind of time service precision detecting system and implementation method |
| CN106850069A (en) * | 2017-02-16 | 2017-06-13 | 中国铁道科学研究院 | Data optical fiber cascade unit and system |
| CN106850069B (en) * | 2017-02-16 | 2019-11-08 | 中国铁道科学研究院 | Data optical fiber cascade unit and system |
| CN107817676A (en) * | 2017-09-27 | 2018-03-20 | 中国科学院长春光学精密机械与物理研究所 | A kind of time terminal system |
| CN107896134A (en) * | 2017-11-15 | 2018-04-10 | 中国电子科技集团公司第三十二研究所 | High-precision modularized time synchronization equipment |
| CN110928176A (en) * | 2019-11-21 | 2020-03-27 | 北京计算机技术及应用研究所 | Multifunctional time service equipment supporting multiple time service technologies |
| US11675318B2 (en) | 2019-12-31 | 2023-06-13 | Continental Automotive Systems, Inc. | Multi-interface GPS time synchronization |
| CN112433466A (en) * | 2020-11-20 | 2021-03-02 | 北京无线电计量测试研究所 | Time code signal output system and method |
| CN112751640B (en) * | 2020-12-25 | 2022-11-15 | 北京航星机器制造有限公司 | Gigabit network NTP time server based on alternating current B code |
| CN112751640A (en) * | 2020-12-25 | 2021-05-04 | 北京航星机器制造有限公司 | Gigabit network NTP time server based on alternating current B code |
| CN112929089A (en) * | 2021-01-29 | 2021-06-08 | 无锡精全电气技术有限公司 | Communication signal transmission method, circuit and system |
| CN113391543A (en) * | 2021-05-11 | 2021-09-14 | 国网浙江省电力有限公司湖州供电公司 | Time synchronization system calibration device based on Beidou GPS |
| CN114070445A (en) * | 2021-11-09 | 2022-02-18 | 中国科学院近代物理研究所 | Distributed power supply timing calibrator and synchronous triggering method |
| CN114070445B (en) * | 2021-11-09 | 2024-06-04 | 中国科学院近代物理研究所 | Distributed power supply timing calibrator and synchronous triggering method |
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Application publication date: 20160224 |