CN212207988U - Time code precision measuring device - Google Patents
Time code precision measuring device Download PDFInfo
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- CN212207988U CN212207988U CN202021480148.7U CN202021480148U CN212207988U CN 212207988 U CN212207988 U CN 212207988U CN 202021480148 U CN202021480148 U CN 202021480148U CN 212207988 U CN212207988 U CN 212207988U
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Abstract
The utility model discloses a time code precision measurement device, this kind of time code precision measurement device include, measurement type antenna, satellite are looked module, atomic clock common and are tamed module, measuring module, data acquisition processing module and power module. The utility model provides a time code precision measuring device, which is characterized in that a measuring antenna receives, processes and transmits signals of a navigation satellite system; the satellite common-view module receives and processes the signals to generate satellite common-view time data and provides TOD (time stamp) data; the atomic clock taming module provides a time frequency reference; the measuring module measures the time precision of externally input data; and the data acquisition and processing module controls the rubidium clock, and performs parameter setting, data acquisition, result analysis and display. The time code precision measuring device uses a time source with unified standards, has small error and high measuring precision, has small size, is more economical and cheap, and is more suitable for popularization and application in various fields.
Description
Technical Field
The utility model relates to a time code measurement technical field, in particular to, a time code precision measurement device.
Background
The time is one of seven basic physical quantities in the international system of units, is the most accurate and widely applied physical quantity in all the physical quantities at present, and the definition of the time unit of 'second' is realized by an atomic clock. The development of modern science and technology is based on the precision experimental measurement, and the measurement precision of time frequency is the highest of all physical quantities and physical constants at present. The high-precision time frequency becomes a vital parameter in national science and technology, economy, military affairs and social life, the application range of the high-precision time frequency permeates engineering technology application fields such as information transmission, power transmission and distribution, deep space exploration, space travel, navigation positioning, weapon experiments, earthquake monitoring and forecasting, geological mineral exploration, measurement and testing and the like from basic research such as physical theory and basic physical constant and the like, and the high-precision time frequency is related to various aspects of important departments of national civilization such as transportation, financial securities, post and telecommunications, energy and the like, and is directly related to the safety and stability of the country and the society, so that the precision measurement of time equipment is particularly important. The knowledge in the fields of utc (coordinated Universal time) world coordination time, gnss (global Navigation Satellite system) global Navigation Satellite system, and tod (time of day) timestamp, etc. is involved.
The time sources of the existing high-precision time code tester all come to GPS time or Beidou time or the time of other atomic clocks, a unified time source is not used as a reference, and high precision is not provided to ensure the accuracy, so that the problem of uncertain precision is brought to standard time frequency appliances applied in the fields of industry and national defense in the future. In addition, in the time frequency transmission mode such as optical fiber transmission and satellite bidirectional transmission, the manufacturing cost is relatively high, and the method is not suitable for popularization in various fields.
The utility model discloses looking at and solving current above-mentioned problem, establishing one set and solving the measuring device size that is relevant in the reality great, manufacturing cost is higher, and on measurement accuracy, because the standard of time source is unified the great error that leads to the uncertainty of time reference to bring, cause the time code precision measurement device of the not high problem of general time code precision measurement device precision.
SUMMERY OF THE UTILITY MODEL
To the above defect, the utility model provides a technical problem lies in, provides a time code precision measurement device to solve the measuring device size that is relevant in the reality that prior art exists great, manufacturing cost is higher, and on measurement accuracy, because the standard of time source is non-uniform leads to the great error that the time reference uncertainty brought, causes the not high problem of general time code precision measurement device precision.
The utility model provides a time code precision measurement device includes:
a measurement type antenna for receiving a navigation satellite system signal;
the satellite common-view module is electrically connected with the measurement type antenna;
the atomic clock taming module is electrically connected with the satellite common-view module;
the measurement module is electrically connected with the satellite common-view module and the atomic clock taming module respectively;
the data acquisition processing module is respectively and electrically connected with the satellite common-view module, the atomic clock taming module and the measuring module, and is provided with a device for acquiring national standard atomic time common-view data information;
and the power supply module is electrically connected with all the modules except the measuring antenna.
Preferably, the measurement module comprises: one or more of a 1PPS/TOD measurement module, an IRIG-B measurement module, an NTP measurement module and a PTP measurement module.
Preferably, the measurement module is connected to an external device, the external device providing 1PPS and TOD specification, network time protocol, and time code, wherein,
the 1PPS/TOD measuring module is used for receiving 1PPS and TOD data input by the external equipment;
the IRIG-B measuring module receives an IRIG-B time code (comprising an AC code and a DC code) input by external equipment;
the NTP measuring module receives NTP network time protocol data input by external equipment;
and the PTP measuring module is used for receiving PTP (IEEE1588) network time protocol data input by the external equipment.
Preferably, the measurement module is electrically connected with the satellite common view module through an RS422 bus.
Preferably, the data acquisition processing module is electrically connected with the satellite common-view module, the atomic clock taming module and the measurement module through a CAN bus.
Preferably, the satellite common view module is electrically connected with the measurement type antenna through a radio frequency coaxial cable.
Preferably, the data acquisition and processing module is provided with a computing component for processing and analyzing the acquired information to acquire a clock difference Δ T-Tutc, where Tru is an atomic clock time of the atomic clock domestication module, and Tutc is an acquired national standard atomic time.
Preferably, according to the clock difference Δ T, the data acquisition and processing module is provided with a control component, the control component controls the atomic clock disciplining module electrically connected with the control component, the atomic clock disciplining module disciplines and adjusts the atomic clock, and the atomic clock disciplining module obtains standard time of tracing to a national standard atomic time.
According to the above technical scheme, the utility model provides a pair of time code precision measurement device, its atomic clock taming module looks the module and all measuring modules provide time signal and frequency signal's benchmark altogether for the satellite, looks the module and looks the comparison altogether when national standard atomic through the satellite, and data acquisition and processing module realize the regulation to rubidium clock and tamine, as the benchmark of other measuring module's time frequency. The measuring module measures the time precision of externally input data according to a time signal and a frequency signal provided by a rubidium clock subjected to remote tracing and TOD (time stamp) reference data provided by the common-view module. And transmitting the result to a data acquisition and processing module for analysis and display. The data acquisition and processing module mainly has the functions of: downloading common-view data from a server in the state standard atomic time through an Internet network, and comparing the common-view data with the common-view data generated by the common-view module to obtain time difference data between a local clock and the state standard atomic time; calculating a disciplined regulation quantity of a rubidium clock by analyzing and calculating time difference data, and controlling the frequency and the phase of the rubidium clock to keep the rubidium clock consistent with the national standard atomic time; and setting parameters and acquiring data, analyzing results and displaying the results of all the measurement modules. The power supply module provides direct current power supply for all the modules. Each structure is mutually supported, on measurement accuracy, uses the unified time source of standard, reduces the error that the time reference uncertainty brought, improves time sign indicating number precision measurement device precision, the utility model provides a pair of time sign indicating number precision measurement device's size is little, low in manufacturing cost, the practicality is higher, suits to extensively promote and apply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a time code precision measuring device according to an embodiment of the present invention;
fig. 2 is a block diagram of a satellite co-viewing principle adopted in the embodiment of the present invention;
fig. 3 is a block diagram illustrating steps of the time code precision measuring apparatus according to an embodiment of the present invention.
In FIGS. 1-3: 1. a measurement type antenna; 2. a satellite common view module; 3. an atomic clock taming module; 4. a measurement module; 5. a data acquisition processing module; 6. a power supply module; 7. a radio frequency coaxial cable; 8. an RS422 bus; 9. a CAN bus; 21. a satellite navigation receiver; 31. an atomic clock; 41. 1PPS/TOD measurement module; 42. an IRIG-B measurement module; 43. an NTP measurement module; 44. a PTP measurement module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to fig. 3, an embodiment of a time code precision measuring device according to the present invention will be described. The time code precision measuring device comprises a measuring antenna 1, a satellite common-view module 2, an atomic clock taming module 3, a measuring module 4, a data acquisition processing module 5 and a power supply module 6, wherein the measuring antenna 1 receives a navigation satellite system signal; the satellite common-view module 2 is electrically connected with the measurement type antenna 1; the atomic clock taming module 3 is electrically connected with the satellite common-view module 2; the measurement module 4 is respectively and electrically connected with the satellite common view module 2 and the atomic clock taming module 3; the data acquisition processing module 5 is respectively and electrically connected with the satellite common-view module 2, the atomic clock taming module 3 and the measuring module 4, and is provided with a device for acquiring national standard atomic time common-view data information; the power supply module 6 is electrically connected to all modules except the measurement type antenna 1.
The power supply module 6 comprises a direct current power supply module or an alternating current power supply module, and the module is started firstly to provide direct current/alternating current for the time code precision measuring device. The measurement type antenna 1 comprises a GNSS measurement type antenna and a full-frequency-point measurement type antenna, the measurement type antenna 1 receives signals of navigation satellite systems such as Beidou, GPS, GLONASS, Galileo and the like, and after the received signals are filtered and amplified, the measurement type antenna 1 transmits radio frequency signals to a satellite common-view module 2 electrically connected with the measurement type antenna 1. The satellite common-view module 2 receives signals of navigation satellite systems such as the Beidou and the like, processes the data and generates satellite common-view time data. The device for acquiring the national standard atomic time co-vision data information on the data acquisition processing module 5 downloads the co-vision data from a national standard atomic time server through an Internet network, compares the co-vision data with the co-vision data acquired from the satellite co-vision module 2 to acquire time difference data of a local clock and the national standard atomic time, calculates the taming adjustment quantity of an atomic clock 31 such as a rubidium atomic clock and a hydrogen atomic clock through analysis and operation of the time difference data, and sends an adjustment signal to the atomic clock taming module 3 by the data acquisition processing module 5 to adjust and taming the frequency and the phase of the atomic clock 31 so as to keep the frequency and the phase consistent with the national standard atomic time.
The measurement module 4 receives externally input data, compares the data with the time signal and frequency signal of the atomic clock 31 subjected to remote tracing provided by the atomic clock taming module 3 and TOD (time stamp) reference data information provided by the satellite common view module 2, measures time precision of the externally input data, and transmits the result to the data acquisition and processing module 5. The data acquisition processing module 5 analyzes and displays the acquired module data, the comparison result and the like. The data acquisition and processing module 5 transmits instruction information such as related instructions for parameter setting of the measurement module 4 while transmitting data in the whole process.
The measurement type antenna 1 receives signals of a navigation satellite system, and transmits the signals to the satellite common-view module 2 after filtering and amplifying. The satellite common-view module 2 receives signals of navigation satellite systems such as the Beidou and the like, performs data processing to generate satellite common-view time data, provides reference and judgment basis for the process of disciplining the atomic clock 31 by the atomic clock disciplining module 3, and provides TOD (time stamp) data for the measuring module 4.
The atomic clock taming module 3 provides time signals and frequency signals for the satellite common-view module 2 and the measuring module 4, the data acquisition and processing module 5 realizes adjustment and taming of the atomic clock 31 through common-view comparison between the satellite common-view module 2 and the national standard atomic time, and data provided by the atomic clock 31 tracing to the national standard atomic time is used as the time frequency reference of the measuring module 4.
The measurement module 4 measures the time precision of externally input data according to the time signal and the frequency signal provided by the atomic clock 31 subjected to remote tracing and the TOD (time stamp) reference data provided by the satellite common view module 2, and transmits the result to the data acquisition and processing module 5 for analysis and display.
The data acquisition and processing module 5 has 3 main functions: downloading common-view data from a server in the national standard atomic time through an Internet network, and comparing the common-view data with the common-view data generated by the satellite common-view module 2 to obtain time difference data of a local clock and the national standard atomic time; calculating the disciplined adjustment quantity of the atomic clock 31 through the analysis and calculation of the time difference data, and controlling the frequency and the phase of the atomic clock 31 to keep the frequency and the phase consistent with the national standard atomic time; and thirdly, parameter setting, data acquisition, result analysis and display are carried out on the measuring module 4.
All the structures are matched with each other, in the aspect of measuring precision, when a time source uses a national standard atom, a time source with unified standard is used as a reference, errors caused by uncertainty of the time reference are reduced, the precision of the time code precision measuring device is improved, and the precision of a standard time frequency instrument applied in the fields of future industry and national defense is guaranteed.
In the present embodiment, the measurement module 4 includes one or more of a 1PPS/TOD measurement module 41, an IRIG-B measurement module 42, an NTP measurement module 43, and a PTP measurement module 44. The measuring module 4 is connected with an external device, the external device provides 1PPS and TOD regulations, a network time protocol and a time code, wherein the 1PPS/TOD measuring module 41 receives 1PPS and TOD data input by the external device; the IRIG-B measurement module 42 receives an IRIG-B time code (including an AC code and a DC code) input by an external device; the NTP measurement module 43 receives NTP network time protocol data input by external equipment; the PTP measurement module 44 receives PTP (IEEE1588) network time protocol data input by an external device.
According to the time signal and the frequency signal provided by the atomic clock 31 which is traced remotely and the TOD (time stamp) reference data provided by the satellite common view module 2, the 1PPS/TOD measurement module 41 measures the time precision of the externally input 1PPS and TOD, the IRIG-B measurement module 42 measures the precision of the externally input IRIG-B time code (including AC code and DC code), the NTP measurement module 43 measures the precision of the externally input NTP network time protocol, the PTP measurement module 44 measures the precision of the externally input IEEE1588(PTP) network time protocol, and then the modules respectively transmit the results to the data acquisition processing module 5 for analysis and display.
In the present embodiment, the measurement module 4 is electrically connected to the satellite common view module 2 through the RS422 bus 8. The data acquisition processing module 5 is electrically connected with the satellite common view module 2, the atomic clock taming module 3 and the measuring module 4 through a CAN bus 9. The satellite common view module 2 is electrically connected with the measurement type antenna 1 through a radio frequency coaxial cable 7. The RS422 bus 8 transmits time data and branched 1PPS signals and frequency signals, the CAN bus 9 performs data acquisition and module control, and the radio frequency coaxial cable 7 is a low-loss radio frequency coaxial cable. Through these connecting wires, carry out low-loss, high-efficient data transmission, furthest has guaranteed the high accuracy of the time data of acquireing, simultaneously for the mode of time frequency transmission such as optic fibre transmission, satellite bidirectional transfer, this kind of mode makes the whole size of device littleer, manufacturing cost is lower in this embodiment, more be favorable to manufacturing and in the popularization and the application of each field.
In this embodiment, the data acquisition and processing module 5 is provided with a computing component for processing and analyzing the acquired information to acquire a clock difference Δ T-Tutc, where Tru is the atomic clock 31 time of the atomic clock taming module 3, and Tutc is the acquired national standard atomic time.
The high-precision satellite navigation receiver a21 may measure the clock difference Δ T between the atomic clock 31(Tru) and the navigation satellite clock (Tsat) of the clientAThe clock offset includes errors, including orbit and clock errors of the navigation satellite, time delay errors of the propagation link, and errors introduced by the navigation receiver. At the same moment, the clock difference delta T between the national standard atomic time UTC (k) and the navigation satellite clock (Tsat) of the reference end can be measured through the high-precision satellite navigation receiver BB＝Tutc-Tsat。
Through network communication, the data acquisition processing module A5 of the client can download the common-view data generated by the data acquisition processing module B of the reference terminal, the clock difference between the client atomic clock 31 and the national standard atomic time UTC (k) can be obtained through the subtraction of the two time differences,
△T＝△TA-△TB＝(Tru-Tsat) - (Tutc-Tsat) ═ Tru-Tutc, which results provide a theoretical basis for the disciplined adjustment of the subsequent atomic clock 31.
In this embodiment, according to the clock difference Δ T, the data acquisition and processing module 5 is provided with a control component, the control component controls the atomic clock disciplining module 3 electrically connected with the control component, the atomic clock disciplining module 3 disciplines and adjusts the atomic clock 31, and the atomic clock disciplining module 3 obtains the standard time of tracing to the national standard atomic time.
Through the satellite common-view method, the data acquisition processing module 5 downloads common-view data from a server of the national standard atomic time through the Internet, compares the common-view data with the common-view data generated by the satellite common-view module 2 to obtain time difference data of a local clock and the national standard atomic time, calculates the phase deviation, the frequency deviation and the frequency drift of the atomic clock 31 relative to the standard atomic time within a period of time, namely clock difference delta T, and then disciplines and adjusts the atomic clock 31 according to the clock difference delta T to keep the atomic clock consistent with the national standard atomic time so as to obtain the standard time of tracing to the national standard atomic time.
After the atomic clock 31 is disciplined and traced back to the national standard atomic time by the satellite common view method, time and frequency reference signals can be provided for the measurement module 4. The measuring module 4 can analyze the externally input time code signal, compare the generated time information with the reference time information, measure the time difference, and finally obtain the time measurement precision of the client time code equipment.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A time code accuracy measuring device, comprising:
a measurement type antenna (1) for receiving a navigation satellite system signal;
the satellite common-view module (2) is electrically connected with the measurement type antenna (1);
the atomic clock taming module (3) is electrically connected with the satellite common-view module (2);
the measurement module (4) is respectively and electrically connected with the satellite common-view module (2) and the atomic clock taming module (3);
the data acquisition processing module (5) is respectively and electrically connected with the satellite common-view module (2), the atomic clock taming module (3) and the measuring module (4), and is provided with a device for acquiring national standard atomic time common-view data information;
and the power supply module (6) is electrically connected with all modules except the measuring antenna (1).
2. The time code accuracy measuring device according to claim 1, wherein the measuring module (4) comprises: one or more of a 1PPS/TOD measurement module (41), an IRIG-B measurement module (42), an NTP measurement module (43) and a PTP measurement module (44).
3. The time code accuracy measurement device according to claim 2, wherein the measurement module (4) is connected to an external device, the external device providing 1PPS and TOD specifications, network time protocol and time code, wherein,
a 1PPS/TOD measuring module (41) for receiving 1PPS and TOD data input by the external equipment;
the IRIG-B measuring module (42) receives an IRIG-B time code (comprising an AC code and a DC code) input by external equipment;
the NTP measuring module (43) receives NTP network time protocol data input by external equipment;
and the PTP measuring module (44) receives PTP (IEEE1588) network time protocol data input by the external equipment.
4. A time code accuracy measuring device according to claim 3, characterized in that said measuring module (4) is electrically connected to said satellite common view module (2) via RS422 bus (8).
5. The time code precision measuring device according to claim 4, wherein the data acquisition and processing module (5) is electrically connected with the satellite common view module (2), the atomic clock taming module (3) and the measuring module (4) through a CAN bus (9).
6. The time code accuracy measuring device according to claim 5, wherein the satellite common view module (2) is electrically connected with the measuring antenna (1) through a radio frequency coaxial cable (7).
7. The time code precision measuring device according to claim 6, wherein the data acquisition and processing module (5) is provided with a calculating component for processing and analyzing the acquired information to obtain the clock error Δ T-Tutc, wherein Tru is the time of the atomic clock (31) of the atomic clock taming module (3), and Tutc is the acquired national standard atomic time.
8. The time code precision measuring device according to claim 7, wherein the data acquisition and processing module (5) is provided with a control component according to the clock difference Δ T, the control component controls the atomic clock disciplining module (3) electrically connected with the control component, the atomic clock disciplining module (3) disciplines and adjusts the atomic clock (31), and the atomic clock disciplining module (3) obtains the standard time of tracing to the national standard atomic time.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113311694A (en) * | 2021-05-28 | 2021-08-27 | 北京卓越航导科技有限责任公司 | Method and device for jointly taming rubidium clock by Beidou satellite common vision and unidirectional time service |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113311694A (en) * | 2021-05-28 | 2021-08-27 | 北京卓越航导科技有限责任公司 | Method and device for jointly taming rubidium clock by Beidou satellite common vision and unidirectional time service |
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