CN202929368U - Time synchronizer for observation apparatus of sea floor observation network - Google Patents
Time synchronizer for observation apparatus of sea floor observation network Download PDFInfo
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- CN202929368U CN202929368U CN 201220585485 CN201220585485U CN202929368U CN 202929368 U CN202929368 U CN 202929368U CN 201220585485 CN201220585485 CN 201220585485 CN 201220585485 U CN201220585485 U CN 201220585485U CN 202929368 U CN202929368 U CN 202929368U
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Abstract
The utility model discloses a time synchronizer for the observation apparatus of a sea floor observation network, comprising main connection box PTN equipment, a secondary connection box and P sea floor observation apparatuses. The NTP synchronization signal and PTP synchronization signal output by the main connection box PTN equipment is input to the two-layer switch of the secondary connection box; the two-layer switch divides the input signal to N+1 signals and outputs the N+1 signals; one PTP synchronization signal is distributed, amplified to M PPS signals and output through a PTP secondary clock and a PPS distribution amplifier; and the M PPS signals, and the N NTP synchronization signals and PTP synchronization signals are respectively input to P observation apparatuses one to one, wherein each PPS signal is connected to one input terminal of the master control unit of the corresponding observation apparatus through the isolation circuit and the amplification circuit of the corresponding observation apparatus, and the corresponding NTP synchronization signal and PTP synchronization signal are directly connected with the other input terminal of the master control unit of the corresponding observation apparatus, where P=M=N. The time synchronizer for the observation apparatus of a sea floor observation network is directly connected to the observation apparatus of a sea floor observation network to realize time synchronization.
Description
Technical field
The utility model relates to a kind of time synchronism apparatus of submarine observation network observation instrument, especially a kind of time synchronism apparatus of the submarine observation network observation instrument based on NTP and PTP technology.
Background technology
Seabed observation network is the 3rd observation platform of earth system; crucial observation station in observation platform is namely the diversified observation instrument of access submarine observation network; these observation instruments have very important effect to aspects such as scientific research of seas, resource exploration, environmental protection, disaster preventions; the various ambient signals that these observation instruments are collected give the precise time stamp, and corresponding data are processed and analysis significance is great for carrying out on land.
Because the observation instrument that is in the zone, deep-sea can't fix up an aerial wire to receive gps satellite signal and Big Dipper satellite signal, therefore just time signal can only be transferred to the seabed from the bank base via optoelectronic composite cable, the variation of the time signal that the remote high precision of the time signal that provides of time signal transmission requirement system, diversified observation instrument requirement system provide.
Summary of the invention
The purpose of this utility model is to provide a kind of time synchronism apparatus of submarine observation network observation instrument, to achieve a butt joint into the time synchronized of the observation instrument of submarine observation network.
for achieving the above object, the time synchronism apparatus of submarine observation network observation instrument of the present utility model comprises: main plug into box PTN equipment, inferior box and P submarine observation instrument of plugging into, the NTP synchronizing signal of the main box PTN equipment output of plugging into is connected through the layer 2-switched input end of cable with the inferior box of plugging into the PTP synchronizing signal, Layer 2 switch is divided into N+1 road output with NTP synchronizing signal and the PTP synchronizing signal of input, one road PTP synchronizing signal inputs to PTP from clock and inputs to the PPS distribution amplifier of built-in crystal oscillator after being decoded as the PPS signal, the PPS distribution amplifier is enlarged into M road PPS signal output with the PPS signal distribution of input, M road PPS signal inputs to P observation instrument with the N road NTP synchronizing signal of Layer 2 switch output and PTP synchronizing signal are corresponding one by one respectively, the buffer circuit of PPS signal in observation instrument wherein is connected with an input end of observation instrument main control unit with amplifying circuit, the NTP synchronizing signal directly is connected with another input end of observation instrument main control unit with the PTP synchronizing signal, P=M=N, and be positive integer.
Above-mentioned observation instrument is the equipment of the real-time online observation of access seabed observation network and data acquisition.Such as seismograph, sampling thief, thermohaline deep profile instrument, deep sea camera etc.
In the utility model, the said master box PTN equipment of plugging into is the web-transporting device of supporting the IEEE1588v2 agreement, being operated in the boundary clock pattern, for example can adopt the transmitted in packets switch of the 1850 TSS-5C models of CIT Alcatel.
In the utility model, said Layer 2 switch is the web-transporting device of supporting IEEE1588 v2 agreement, for example can adopt the EDS616 modular ethernet switches of MOXA company.
In the utility model, said PTP from clock be support IEEE1588 v2 agreement from clock module, can be that Link1588 PTP is from the clock card.
In the utility model, it is the punctual precision 5 * 10 of being built-in with of TimeDA2000 that said PPS distribution amplifier can adopt model
-10The time signal expanding device of/day constant-temperature crystal oscillator.
In the utility model, said observation instrument main control unit is the key control unit of observation instrument, can be seismographic digital recording system, can be also the CPU element of deep sea sampler.
In the utility model, it is the 6N137 High-Speed Coupled Device that said buffer circuit can adopt isolating chip.
The principle of work of this device is as follows:
The NTP synchronizing signal of the PTN equipment output of the main box of plugging into and PTP synchronizing signal are through the Layer 2 switch of cable transmission to the inferior box of plugging into;
Layer 2 switch is divided into N+1 road output with NTP synchronizing signal and the PTP synchronizing signal of input, one road PTP synchronizing signal inputs to PTP from clock and decodedly goes out with the UTC time deviation after 200ns is with interior PPS signal, input to the PPS distribution amplifier of built-in crystal oscillator, all the other every roads, N road are exported NTP synchronizing signal and PTP synchronizing signal simultaneously;
The PPS distribution amplifier distributes the PPS signal of input and is enlarged into M road PPS signal, M=N;
The M road PPS signal of PPS distribution amplifier output is corresponding one by one with N road NTP synchronizing signal and the PTP synchronizing signal of Layer 2 switch output respectively, and by cable transmission to P observation instrument, P=M=N, and be positive integer;
Buffer circuit in each observation instrument carries out isolation processing to the PPS signal of input, input to the observation instrument main control unit after amplifying processing by amplifying circuit, carry out combined decoding with the NTP synchronizing signal of input observation instrument main control unit or PTP synchronizing signal and realize time synchronized: when observation instrument is supported Network Time Protocol, realize the Microsecond grade time synchronized by NTP synchronizing signal and the decoding of PPS combined signal; Support IEEE1588 v2 agreement when observation instrument, decode by the PTP synchronizing signal and realize the Microsecond grade time synchronized.
The time synchronism apparatus of submarine observation network observation instrument of the present utility model offers observation instrument from clock to the PTP synchronizing signal output PPS signal of decoding by PTP in the inferior box of plugging into, can increase the diversity of submarine observation network time signal; In the inferior box of plugging into, PTP is distributed amplification from the PPS signal of clock output, realized that 1 road PPS signal expands to multichannel, observation instrument need not to carry out the decoding of PTP synchronizing signal again can obtain high precision PPS signal, can reduce the observation instrument cost; Observation instrument is isolated the amplification processing to the PPS signal that receives, and has improved PPS signal long-distance transmissions driving force afterwards.
Description of drawings
Fig. 1 is the time synchronism apparatus schematic diagram of submarine observation network observation instrument.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
with reference to Fig. 1, the time synchronism apparatus of submarine observation network observation instrument comprises: main plug into box PTN equipment 1, inferior box 2 and P submarine observation instrument 6 of plugging into, the NTP synchronizing signal of main box PTN equipment 1 output of plugging into is connected through the input end of cable with the Layer 2 switch 3 of the inferior box 2 of plugging into the PTP synchronizing signal, Layer 2 switch 3 is divided into N+1 road output with NTP synchronizing signal and the PTP synchronizing signal of input, one road PTP synchronizing signal inputs to PTP from clock 4 and inputs to the PPS distribution amplifier 5 of built-in crystal oscillator after being decoded as the PPS signal, PPS distribution amplifier 5 is enlarged into M road PPS signal output with the PPS signal distribution of input, M road PPS signal inputs to P observation instrument 6 with the N road NTP synchronizing signal of Layer 2 switch 3 output and PTP synchronizing signal are corresponding one by one respectively, the buffer circuit 7 of PPS signal wherein in observation instrument 6 is connected with an input end of observation instrument main control unit 9 with amplifying circuit 8, the NTP synchronizing signal directly is connected with another input end of observation instrument main control unit 9 with the PTP synchronizing signal, P=M=N, P=M=N=8 in legend.
Claims (5)
1. the time synchronism apparatus of a submarine observation network observation instrument, is characterized in that comprising main plug into box PTN equipment (1), the inferior box of plugging into (2) and P submarine observation instrument (6); the NTP synchronizing signal of main box PTN equipment (1) output of plugging into is connected through the input end of cable with the Layer 2 switch (3) of inferior box (2) of plugging into the PTP synchronizing signal, Layer 2 switch (3) is divided into N+1 road output with NTP synchronizing signal and the PTP synchronizing signal of input, one road PTP synchronizing signal inputs to PTP from clock (4) and inputs to the PPS distribution amplifier (5) of built-in crystal oscillator after being decoded as the PPS signal, PPS distribution amplifier (5) is enlarged into M road PPS signal output with the PPS signal distribution of input, M road PPS signal respectively with the N road NTP synchronizing signal of Layer 2 switch (3) output and PTP synchronizing signal corresponding P the observation instrument (6) that input to one by one, the buffer circuit (7) of PPS signal wherein in observation instrument (6) is connected with an input end of observation instrument main control unit (9) with amplifying circuit (8), the NTP synchronizing signal directly is connected with another input end of observation instrument main control unit (9) with the PTP synchronizing signal, P=M=N, and be positive integer.
2. the time synchronism apparatus of submarine observation network observation instrument according to claim 1, is characterized in that, said observation instrument (6) is the equipment of the real-time online observation of access seabed observation network and data acquisition.
3. the time synchronism apparatus of submarine observation network observation instrument according to claim 1 is characterized in that the said master box PTN equipment (1) of plugging into is the web-transporting device of supporting the IEEE1588v2 agreement, being operated in the boundary clock pattern.
4. the time synchronism apparatus of submarine observation network observation instrument according to claim 1, is characterized in that, said Layer 2 switch (3) is the web-transporting device of supporting IEEE1588 v2 agreement.
5. the time synchronism apparatus of submarine observation network observation instrument according to claim 1, is characterized in that, said PTP from clock (4) be support IEEE1588 v2 agreement from clock module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585485 CN202929368U (en) | 2012-11-08 | 2012-11-08 | Time synchronizer for observation apparatus of sea floor observation network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585485 CN202929368U (en) | 2012-11-08 | 2012-11-08 | Time synchronizer for observation apparatus of sea floor observation network |
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| CN202929368U true CN202929368U (en) | 2013-05-08 |
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| CN 201220585485 Expired - Lifetime CN202929368U (en) | 2012-11-08 | 2012-11-08 | Time synchronizer for observation apparatus of sea floor observation network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108255048A (en) * | 2018-03-21 | 2018-07-06 | 中国科学院深海科学与工程研究所 | Based on the underwater time calibration inductively communicated and synchronization system and method |
-
2012
- 2012-11-08 CN CN 201220585485 patent/CN202929368U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108255048A (en) * | 2018-03-21 | 2018-07-06 | 中国科学院深海科学与工程研究所 | Based on the underwater time calibration inductively communicated and synchronization system and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170104 Address after: Rudong County, Jiangsu province 226407 Nantong Yangkou Port Economic Development Zone of Yangkou Port Business Mansion Patentee after: ZHONGTIAN TECHNOLOGY MARINE SYSTEMS Co.,Ltd. Address before: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee before: ZHEJIANG University |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 226407 Nantong, Rudong Foreign Economic Development Zone, Hong Kong, Hong Kong, Hong Kong Commercial Building Patentee after: ZHONGTIAN TECHNOLOGY MARINE SYSTEMS Co.,Ltd. Address before: Rudong County, Jiangsu province 226407 Nantong Yangkou Port Economic Development Zone of Yangkou Port Business Mansion Patentee before: ZHONGTIAN TECHNOLOGY MARINE SYSTEMS Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
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| CX01 | Expiry of patent term |