CN205539995U - Multimode high accuracy time service system - Google Patents
Multimode high accuracy time service system Download PDFInfo
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- CN205539995U CN205539995U CN201620099599.3U CN201620099599U CN205539995U CN 205539995 U CN205539995 U CN 205539995U CN 201620099599 U CN201620099599 U CN 201620099599U CN 205539995 U CN205539995 U CN 205539995U
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Abstract
The utility model belongs to the whole network time lock field, in particular to multimode high accuracy time service system. The utility model discloses a big dipper time service unit, GPS time service unit, IRIG B time service unit, docile punctual unit and time service algorithm unit, big dipper time service unit, GPS time service unit, IRIG B time service unit all with time service algorithm unit between both -way communication be connected, time service algorithm unit still with tame that both -way communication is connected between the punctual unit, tame punctual unit including taming punctual circuit, at big dipper pulse signal second, GPS pulse signal second, IRIG under the whole condition of losing of B pulse signal second, tame punctual circuit and get into punctual state, punctual time of time service algorithm unit output and punctual second pulse. The utility model discloses a big dipper satellite time, GPS satellite time and IRIG the time conduct of B sign indicating number the external clock source of time service system has prevented the puzzlement that brings, moreover when GPS satellite timeliness can be unstable the utility model has the characteristics of precision height, good reliability, stable performance.
Description
Technical field
This utility model belongs to the whole network time synchronized field, particularly to a kind of multimode time service system in high precision
System.
Background technology
The whole network time synchronized mainly uses clock synchronization system that clock each in network carries out high accuracy and awards
Time, clock source and time service algorithm that clock synchronization system uses can directly affect the accurate of belonging network time service
Property and reliability, and current time reference be substantially all dependence the GPS time service of satellite clock source, in view of GPS
Time is under the jurisdiction of the U.S., and gps signal precision is by US military control, it is impossible to ensures that the moment provides and accurately may be used
Lean on, the satellite time transfer signal of stable performance.Therefore, on the basis of GPS time service, other time service sources are introduced
And can to provide precision height, good reliability, the satellite time service system of stable performance will be the most necessary.
Utility model content
This utility model is in order to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of multimode high accuracy time service
System, this utility model, using satellite time and IRIG-B code as reference source, once loses external reference
Source, this utility model will enter the most punctual state, and this utility model has precision height, reliability
Good, the feature of stable performance.
For achieving the above object, this utility model have employed techniques below measure:
A kind of multimode high accuracy time dissemination system, including Big Dipper time service unit, GPS time service unit, IRIG-B
Time service unit, taming punctual unit and time service algorithm unit, described Big Dipper time service unit, GPS award
The signal output part of Shi Danyuan, IRIG-B time service unit all with the signal input part phase of time service algorithm unit
Even, described taming two-way communication between unit with time service algorithm unit of keeping time is connected, described time service algorithm list
The signal output part output time service time of unit and time service pulse per second (PPS).
This utility model can also be realized further by techniques below measure.
Preferably, described Big Dipper time service unit include big-dipper satellite receive circuit, the first level shifting circuit,
And first signal isolation circuit, described big-dipper satellite receives the signal input part of circuit and connects big-dipper satellite
Signal, the signal output part of big-dipper satellite reception circuit connects the signal input of the first signal isolation circuit
End, the signal output part of described first level shifting circuit connects big-dipper satellite and receives circuit, the first signal
The signal input part of isolation circuit, the signal input part of described first level shifting circuit connects time service algorithm
The signal output part of unit, the signal output part of described first signal isolation circuit connects time service algorithm unit
Signal input part.
Preferably, described GPS time service unit include gps satellite receive circuit, second electrical level change-over circuit,
And secondary signal isolation circuit, described gps satellite receives the signal input part of circuit and connects gps satellite
Signal, gps satellite receives the signal input part of the signal output part connection secondary signal isolation circuit of circuit,
The signal output part of described second electrical level change-over circuit connects gps satellite and receives circuit, secondary signal isolation
The signal input part of circuit, the signal input part of described second electrical level change-over circuit connects time service algorithm unit
Signal output part, described secondary signal isolation circuit signal output part connect time service algorithm unit letter
Number input.
Preferably, described IRIG-B time service unit includes the 3rd level shifting circuit and photoelectric switching circuit,
The signal input part of described photoelectric switching circuit connects IRIG-B code signal, the signal of photoelectric switching circuit
Input connects the signal output part of the 3rd level shifting circuit, and the signal output part of photoelectric switching circuit is even
Connecing the signal input part of time service algorithm unit, the signal input part of described 3rd level shifting circuit connects to be awarded
Time algorithm unit signal output part.
Further, described unit of keeping time of taming includes the 4th level shifting circuit, the 3rd signal isolation electricity
Road and taming punctual circuit, the signal input part of described 4th level shifting circuit connects time service algorithm
The signal output part of unit, two signal output parts of described 4th level shifting circuit connect the 3rd respectively
Signal isolation circuit, the signal input part of taming punctual circuit；The signal of described 3rd signal isolation circuit
Input connects the signal output part taming punctual circuit, and the signal output part of the 3rd signal isolation circuit is even
Connect the signal input part of time service algorithm unit；The described signal input part taming punctual circuit connects time service and calculates
The signal output part of method unit.
Further, described time service algorithm unit includes that microprocessor, power-switching circuit, state indicate
Circuit, output interface circuit and the 4th signal isolation circuit, the signal input part of described microprocessor
Connect the first signal isolation circuit, secondary signal isolation circuit, photoelectric switching circuit, the 3rd signal isolation
Circuit, the signal output part of power-switching circuit, the signal output part of described microprocessor connects to tame keeps
Time circuit, condition indication circuit, the signal input part of output interface circuit；Described power-switching circuit
Signal output part connect the first level shifting circuit, second electrical level change-over circuit, the 3rd level shifting circuit,
The signal input part of the 4th level shifting circuit；The signal output part of described output interface circuit connects the 4th
The signal input part of signal isolation circuit, the signal output part output time service of described 4th signal isolation circuit
Time and time service pulse per second (PPS).
Further, described big-dipper satellite receives the model of circuit is China's authority's microelectronics limited public affairs of science and technology
The TD3020T module that department produces, it is U-blox company of Switzerland that described gps satellite receives the model of circuit
The LEA-M8T module produced, the described model taming punctual circuit is China's sky Telekom Malaysia limited public affairs of science and technology
The CM5503 clock module that department produces, described microprocessor model is that Microsemi company of the U.S. produces
SmartFusion2 series M2S025T chip.
The beneficial effects of the utility model are:
1), this utility model include Big Dipper time service unit, GPS time service unit, IRIG-B time service unit,
Tame punctual unit and time service algorithm unit, described Big Dipper time service unit, GPS time service unit, IRIG-B
Time service unit is all connected with two-way communication between time service algorithm unit, and described time service algorithm unit is also with taming
Between punctual unit, two-way communication connects；This utility model uses big-dipper satellite time, gps satellite time
With the IRIG-B code time as the external clock reference of described time dissemination system, it is therefore prevented that when the gps satellite time
The puzzlement brought during unstable properties, and this utility model has precision height, good reliability, performance
Stable feature.
Be worth it is emphasized that: this utility model is only protected by above-mentioned physical unit and connects each thing
Manage device or physical platform that the circuit between parts is constituted, without regard to software section therein.
2), described unit of keeping time of taming includes taming punctual circuit, at Big Dipper pps pulse per second signal, GPS
In the case of pps pulse per second signal, IRIG-B pps pulse per second signal are all lost, described circuit of keeping time of taming enters
Punctual state, and time dissemination system can be seamlessly switched to other external clocks do not lost by this utility model
Source or local system time, it is ensured that the reliability and stability of the time of time system output；And this reality
Tame punctual function by novel foundation and may insure that this utility model exports the high-precision time.
3), described big-dipper satellite receives the model of circuit be that authority microelectronics Science and Technology Ltd. of China gives birth to
The TD3020T module produced, it is that U-blox company of Switzerland produces that described gps satellite receives the model of circuit
LEA-M8T module, the described model taming punctual circuit be that sky Telekom Malaysia Science and Technology Ltd. of China gives birth to
The CM5503 clock module produced, described microprocessor model is that Microsemi company of the U.S. produces
The M2S025T chip of SmartFusion2 series.The parts of above-mentioned multiple specific model are worked in coordination, real
Show optimal design of the present utility model.
Accompanying drawing explanation
Fig. 1 is this utility model system connection diagram；
Fig. 2 is this utility model systematic schematic diagram；
Fig. 3 is this utility model time service method process chart.
In figure, the implication of label symbol is as follows:
10 Big Dipper time service unit 11 big-dipper satellites receive circuit
12 first level shifting circuit 13 first signal isolation circuit
20 GPS time service unit 21 gps satellites receive circuit
22 second electrical level change-over circuit 23 secondary signal isolation circuit
30 IRIG-B time service unit 31 the 3rd level shifting circuits
32 photoelectric switching circuits 40 tame punctual unit
41 the 4th level shifting circuit 42 the 3rd signal isolation circuit
43 tame punctual circuit 50 time service algorithm unit
51 microprocessor 52 power-switching circuits
53 condition indication circuit 54 output interface circuits
55 the 4th signal isolation circuit
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technology in this utility model embodiment
Scheme is clearly and completely described, it is clear that described embodiment is only this utility model one
Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into this
The scope of utility model protection.
As it is shown in figure 1, a kind of multimode high accuracy time dissemination system, award including Big Dipper time service unit 10, GPS
Shi Danyuan 20, IRIG-B time service unit 30, taming punctual unit 40 and time service algorithm unit 50,
Wherein,
Big Dipper time service unit 10, is used for receiving Big Dipper satellite signal, and output meets NMEA0183 agreement
Big Dipper time signal and Big Dipper pps pulse per second signal to the signal input part of time service algorithm unit 50；GPS
Time service unit 20, is used for receiving gps satellite signal, and when exporting the GPS meeting NMEA0183 agreement
Between signal and GPS second pulse signal to the signal input part of time service algorithm unit 50；IRIG-B time service
Unit 30, is used for receiving IRIG-B code signal, and exports that to meet the IRIG-B of IRIG-B code agreement straight
Stream code is to the signal input part of time service algorithm unit 50；Tame punctual unit 40, be used for receiving the Big Dipper second
Pulse signal, GPS second pulse signal and IRIG-B pps pulse per second signal, and export the second arteries and veins after taming
Rush signal to the signal input part of time service algorithm unit 50, described tame punctual unit 40 and time service algorithm
Between unit 50, two-way communication connects；Time service algorithm unit 50, for by described IRIG-B direct current code solution
Calculating is IRIG-B time signal and IRIG-B pps pulse per second signal, and judges described Big Dipper time signal, GPS
Time signal and the effectiveness of IRIG-B time signal, thus obtain effective Beijing time,
Output time service time and time service pulse per second (PPS) eventually, the signal input part of described time service algorithm unit 50 connects north
Bucket time service unit 10, GPS time service unit 20, the signal output part of IRIG-B time service unit 30.
As in figure 2 it is shown, described Big Dipper time service unit 10 includes that big-dipper satellite receives circuit the 11, first electricity
Flat change-over circuit 12 and the first signal isolation circuit 13, described big-dipper satellite receives circuit 11 and is used for
Receiving Big Dipper satellite signal, big-dipper satellite receives the signal output part of circuit 11 and connects the first signal isolation
The signal input part of circuit 13, the signal output part of described first level shifting circuit 12 connects the Big Dipper and defends
Star receives the signal input part of circuit the 11, first signal isolation circuit 13, described first level conversion electricity
The signal input part on road 12 connects the signal output part of time service algorithm unit 50, described first signal isolation
The signal output part of circuit 13 connects the signal input part of time service algorithm unit 50.
As in figure 2 it is shown, described GPS time service unit 20 includes that gps satellite receives circuit the 21, second electricity
Flat change-over circuit 22 and secondary signal isolation circuit 23, described gps satellite receives circuit 21 and is used for
Receiving gps satellite signal, gps satellite receives the signal output part of circuit 21 and connects secondary signal isolation electricity
The signal input part on road 23, the signal output part of described second electrical level change-over circuit 22 connects gps satellite
Receive circuit 21, the signal input part of secondary signal isolation circuit 23, described second electrical level change-over circuit
The signal input part of 22 connects the signal output part of time service algorithm unit 50, described secondary signal isolation electricity
The signal output part on road 23 connects the signal input part of time service algorithm unit 50.
As in figure 2 it is shown, described IRIG-B time service unit 30 includes the 3rd level shifting circuit 31 and light
Power conversion circuit 32, described photoelectric switching circuit 32 is used for receiving IRIG-B code signal, opto-electronic conversion electricity
The signal input part on road 32 connects the signal output part of the 3rd level shifting circuit 31, photoelectric switching circuit
The signal output part of 32 connects the signal input part of time service algorithm unit 50, described 3rd level conversion electricity
The signal input part on road 31 connects the signal output part of time service algorithm unit 50.
As in figure 2 it is shown, described unit 40 of keeping time of taming includes the 4th level shifting circuit the 41, the 3rd letter
Number isolation circuit 42 and tame punctual circuit 43, the signal of described 4th level shifting circuit 41 is defeated
Enter end and connect the signal output part of time service algorithm unit 50, two signals of the 4th level shifting circuit 41
Outfan connects the 3rd signal isolation circuit 42 respectively, tames the signal input part of punctual circuit 43；Institute
The signal input part stating the 3rd signal isolation circuit 42 connects the signal output part taming punctual circuit 43,
The signal output part of the 3rd signal isolation circuit 42 connects the signal input part of time service algorithm unit 50；Institute
State the signal output part of the signal input part connection time service algorithm unit 50 taming punctual circuit 43.
As in figure 2 it is shown, described time service algorithm unit 50 include microprocessor 51, power-switching circuit 52,
Condition indication circuit 53, output interface circuit 54 and the 4th signal isolation circuit 55, described micro-place
The signal input part of reason device 51 connects the first signal isolation circuit 13, secondary signal isolation circuit 23, light
Power conversion circuit the 32, the 3rd signal isolation circuit 42, the signal output part of power-switching circuit 52, micro-
The signal output part of processor 51 connects tames punctual circuit 43, condition indication circuit 53, output interface
The signal input part of circuit 54, the signal output part of described power-switching circuit 52 is also connected with the first level
Change-over circuit 12, second electrical level change-over circuit the 22, the 3rd level shifting circuit the 31, the 4th level conversion
The signal input part of circuit 41；The signal input part of described 4th signal isolation circuit 55 connects output and connects
The signal output part of mouth circuit 54.
It is the production of authority microelectronics Science and Technology Ltd. of China that described big-dipper satellite receives the model of circuit 11
TD3020T module, described TD3020T module support BD2/GPS bimodulus time service locating module, pass through
Serial ports output NMEA data also provide 1PPS time signal, and time service precision is up to 30ns；Described GPS
The model of satellite reception circuit 21 is the LEA-M8T module that U-blox company of Switzerland produces, described
LEA-M8T module supports the multimode time service locating modules such as BD2/GPS, by serial ports output NMEA data also
Providing 1PPS time signal, time service precision is up to 20ns；During the model of described taming punctual circuit 43 is
The CM5503 clock module that Guo Tian Telekom Malaysia Science and Technology Ltd. produces, described CM5503 clock module
The punctual ability of 1PPS output is less than 3.5us, and pulse width is 100ms, have frequency lock speed fast,
The feature that accuracy is high；Described microprocessor 51 model is that Microsemi company of the U.S. produces
The M2S025T chip of SmartFusion2 series, described integrated FPGA and ARM of M2S025T chip internal
Device Cortex-M3 at stone, FPGA pin mapping flexibly, logical order parallel running and process speed
The features such as degree is fast meet this utility model parallel processing to external input signal, improve described system and run
Efficiency and precision, described ARM hard nucleus management device can reduce described time service method development difficulty, strengthen its journey
Sequence is portable, beneficially secondary development.
This utility model in use, can coordinate with software of the prior art and use.Below
In conjunction with software of the prior art, operation principle of the present utility model is described, it must be noted that
It is: the software matched with this utility model is not innovative part of the present utility model, is not this practicality
Novel ingredient.
As it is shown on figure 3, the enforcement of the time service method of a kind of multimode high accuracy time dissemination system specifically includes following
Step:
S1, described microprocessor 51 receive the Big Dipper time signal of the first signal isolation circuit 13 output,
Described Big Dipper time signal is such as:
“$BDRMC,031054.00,A,3151.67797,N,11714.51358,E,0.022,,021115,
,,D*67”
According to Big Dipper time signal described in NMEA0183 protocol analysis and judge its effectiveness, such as the 3rd
That ", " is corresponding is " A ", then this time signal is effective, and this time signal solution is counted as standard Beijing
Time is stored in Big Dipper time caching, such as BDBuf []=" 2015,02,11,031054 ", when representing Beijing
Between 11 days 3 February in 2015 time 10 points 54 seconds, and to arrange Big Dipper time tag be effective, as
BDValid=1；It is invalid, such as BDValid=0 for otherwise arranging Big Dipper time tag；
S2, described microprocessor 51 receive the gps time signal of secondary signal isolation circuit 23 output,
Described gps time signal is such as:
“$GPRMC,031054.00,A,3151.67797,N,11714.51358,E,0.022,,021115,
,,D*76”
According to gps time signal described in NMEA0183 protocol analysis and judge its effectiveness, such as the 3rd
That ", " is corresponding is " A ", then this time signal is effective, and described time signal solution is counted as standard north
The capital time is also stored in Big Dipper time caching, such as GPSBuf []=" 2015,02,11,031054 ", represent
10 points 54 seconds during 11 days 3 February of 2015 Beijing time, and gps time is set is masked as effectively,
Such as GPSValid=1；Otherwise arrange gps time be masked as invalid, such as GPSValid=0；
S3, described microprocessor 51 receive the IRIG-B direct current code of photoelectric switching circuit 32 output, micro-
Processor 51 calculates IRIG-B time signal and IRIG-B pps pulse per second signal according to IRIG-B code agreement,
Described microprocessor 51 resolves IRIG-B time signal and judges its effectiveness；If effectively, then by described
IRIG-B time signal solution is counted as standard Beijing time and is stored in during the IRIG-B time caches, as
IRIGBBuf []=" 2015,02,11,031054 ", when representing 11 days 3 February of 2015 year Beijing time
10 points 54 seconds, and to arrange IRIG-B time tag be effective, such as IRIGBValid=1；Otherwise arrange
IRIG-B time tag is invalid, such as IRIGBValid=0；
S4, described microprocessor 51 judge Big Dipper time tag, gps time mark, IRIG-B time
Mark is the most effective；If Big Dipper time tag is effectively, such as BDValid=1, then the Big Dipper time is cached
In standard Beijing time be set to local system time, such as LOCALBuf []=BDBuf []="
2015,02,11,031054 ", microprocessor 51 Big Dipper second that the first signal isolation circuit 13 is exported
Pulse signal is sent into and is tamed punctual circuit 43；
Otherwise, if Big Dipper time tag is invalid and gps time is masked as effectively, as
BDValid=0, GPSValid=1, then be set to local system by the standard Beijing time in gps time caching
The system time, such as LOCALBuf []=GPSBuf []=" 2015,02,11,031054 ", and by secondary signal every
GPS second pulse signal from circuit 23 output is sent into and is tamed punctual circuit 43；
Otherwise, if Big Dipper time tag, that gps time mark is is invalid, and IRIG-B time tag is
Effectively, such as BDValid=0, GPSValid=0, IRIGBValid=1, then in the IRIG-B time being cached
Standard Beijing time be set to local system time, such as LOCALBuf []=IRIGBBuf []="
2015,02,11,031054 ", and by IRIG-B pps pulse per second signal send into and tame punctual circuit 43；
If Big Dipper time tag, gps time mark, that IRIG-B time tag is is invalid, described micro-place
Reason device 51 starts to perform from step S1 again；
S5, in above S1, S2, S3, S4 arbitrary steps, if the response of described microprocessor 51 come
From the local pps pulse per second signal of the 3rd signal isolation circuit 42 output, then microprocessor 51 enters pulse per second (PPS)
Interrupt handling routine, local system time is from adding one second, such as LOCALBuf []="
2015,02,11,031055 ", export local system time LOCALBuf, then exit stage casing processing routine,
Described microprocessor 51 from perform this step S5 back next step continue executing with.
Claims (7)
1. multimode high accuracy time dissemination system, it is characterised in that: include Big Dipper time service unit (10),
GPS time service unit (20), IRIG-B time service unit (30), taming punctual unit (40), Yi Jishou
Time algorithm unit (50), described Big Dipper time service unit (10), GPS time service unit (20), IRIG-B
The signal output part of time service unit (30) all signal input parts with time service algorithm unit (50) are connected,
Described tame punctual between unit (40) with time service algorithm unit (50) two-way communication be connected, described in award
Time algorithm unit (50) signal output part output time service time and time service pulse per second (PPS).
2. a kind of multimode high accuracy time dissemination system as claimed in claim 1, it is characterised in that: described
Big Dipper time service unit (10) include big-dipper satellite receive circuit (11), the first level shifting circuit (12),
And first signal isolation circuit (13), described big-dipper satellite receives the signal input part of circuit (11)
Connect Big Dipper satellite signal, big-dipper satellite receive circuit (11) signal output part connect the first signal every
From the signal input part of circuit (13), the signal output part of described first level shifting circuit (12) is even
Connect big-dipper satellite and receive circuit (11), the signal input part of the first signal isolation circuit (13), described
The signal input part of the first level shifting circuit (12) connects the signal output of time service algorithm unit (50)
End, the signal output part of described first signal isolation circuit (13) connects time service algorithm unit (50)
Signal input part.
3. a kind of multimode high accuracy time dissemination system as claimed in claim 2, it is characterised in that: described
GPS time service unit (20) include gps satellite receive circuit (21), second electrical level change-over circuit (22),
And secondary signal isolation circuit (23), described gps satellite receives the signal input part of circuit (21)
Connect gps satellite signal, gps satellite receive circuit (21) signal output part connect secondary signal every
From the signal input part of circuit (23), the signal output part of described second electrical level change-over circuit (22) is even
Connect gps satellite and receive circuit (21), the signal input part of secondary signal isolation circuit (23), described
The signal input part of second electrical level change-over circuit (22) connects the signal output of time service algorithm unit (50)
End, the signal output part of described secondary signal isolation circuit (23) connects time service algorithm unit (50)
Signal input part.
4. a kind of multimode high accuracy time dissemination system as claimed in claim 3, it is characterised in that: described
IRIG-B time service unit (30) includes the 3rd level shifting circuit (31) and photoelectric switching circuit (32),
The signal input part of described photoelectric switching circuit (32) connects IRIG-B code signal, photoelectric switching circuit
(32) signal input part connects the signal output part of the 3rd level shifting circuit (31), opto-electronic conversion
The signal input part of signal output part connection time service algorithm unit (50) of circuit (32), the described 3rd
The signal input part of level shifting circuit (31) connects the signal output part of time service algorithm unit (50).
5. a kind of multimode high accuracy time dissemination system as claimed in claim 4, it is characterised in that: described
Tame punctual unit (40) include the 4th level shifting circuit (41), the 3rd signal isolation circuit (42),
And tame punctual circuit (43), the signal input part of described 4th level shifting circuit (41) connects
The signal output part of time service algorithm unit (50), two letters of described 4th level shifting circuit (41)
The signal that number outfan connects the 3rd signal isolation circuit (42) respectively, tame punctual circuit (43) is defeated
Enter end；The signal input part of described 3rd signal isolation circuit (42) connects tames punctual circuit (43)
Signal output part, the signal output part of the 3rd signal isolation circuit (42) connects time service algorithm unit (50)
Signal input part；The described signal input part taming punctual circuit (43) connects time service algorithm unit (50)
Signal output part.
6. a kind of multimode high accuracy time dissemination system as claimed in claim 5, it is characterised in that: described
Time service algorithm unit (50) includes microprocessor (51), power-switching circuit (52), state instruction electricity
Road (53), output interface circuit (54) and the 4th signal isolation circuit (55), described micro-process
The signal input part of device (51) connects the first signal isolation circuit (13), secondary signal isolates circuit (23),
Photoelectric switching circuit (32), the 3rd signal isolation circuit (42), the signal of power-switching circuit (52)
Outfan, the signal output part of described microprocessor (51) connects tames punctual circuit (43), state
Indicating circuit (53), the signal input part of output interface circuit (54)；Described power-switching circuit (52)
Signal output part connect the first level shifting circuit (12), second electrical level change-over circuit (22), the 3rd
Level shifting circuit (31), the signal input part of the 4th level shifting circuit (41)；Described output connects
The signal output part of mouth circuit (54) connects the signal input part of the 4th signal isolation circuit (55), institute
State signal output part output time service time and the time service pulse per second (PPS) of the 4th signal isolation circuit (55).
7. a kind of multimode high accuracy time dissemination system as claimed in claim 6, it is characterised in that: described
It is that authority microelectronics Science and Technology Ltd. of China produces that big-dipper satellite receives the model of circuit (11)
TD3020T module, it is that U-blox company of Switzerland produces that described gps satellite receives the model of circuit (21)
LEA-M8T module, the described model taming punctual circuit (43) be that Chinese sky Telekom Malaysia science and technology is limited
The CM5503 clock module that company produces, described microprocessor (51) model is U.S. Microsemi
The M2S025T chip of the SmartFusion2 series that company produces.
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| CN201620099599.3U CN205539995U (en) | 2016-01-28 | 2016-01-28 | Multimode high accuracy time service system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505832A (en) * | 2017-08-02 | 2017-12-22 | 桂林电子科技大学 | A kind of high-precision time dissemination system |
| CN113721274A (en) * | 2021-07-26 | 2021-11-30 | 四创电子股份有限公司 | Beidou-based data processing algorithm for adaptive antenna state |
| CN115309031A (en) * | 2022-07-22 | 2022-11-08 | 杭州亿邦博通科技股份有限公司 | Beidou/GPS dual-mode digital high-precision synchronous time service equipment and system |
-
2016
- 2016-01-28 CN CN201620099599.3U patent/CN205539995U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505832A (en) * | 2017-08-02 | 2017-12-22 | 桂林电子科技大学 | A kind of high-precision time dissemination system |
| CN107505832B (en) * | 2017-08-02 | 2019-11-19 | 桂林电子科技大学 | A kind of high-precision time dissemination system |
| CN113721274A (en) * | 2021-07-26 | 2021-11-30 | 四创电子股份有限公司 | Beidou-based data processing algorithm for adaptive antenna state |
| CN113721274B (en) * | 2021-07-26 | 2024-04-26 | 四创电子股份有限公司 | Beidou-based data processing algorithm for self-adaptive antenna state |
| CN115309031A (en) * | 2022-07-22 | 2022-11-08 | 杭州亿邦博通科技股份有限公司 | Beidou/GPS dual-mode digital high-precision synchronous time service equipment and system |
| CN115309031B (en) * | 2022-07-22 | 2023-12-29 | 杭州亿邦博通科技股份有限公司 | Beidou/GPS dual-mode digital high-precision synchronous time service equipment and system |
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