CN111142365A

CN111142365A - Time code output system

Info

Publication number: CN111142365A
Application number: CN201911337603.XA
Authority: CN
Inventors: 郭红玉; 李世光; 王超; 杨祎
Original assignee: Beijing Institute of Radio Metrology and Measurement
Current assignee: Beijing Institute of Radio Metrology and Measurement
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-05-12

Abstract

The invention discloses a time code output system, which comprises a receiver module, a master control module and a time code output module, wherein the receiver module is used for receiving a Beidou/GPS signal, analyzing the time information of the Beidou/GPS signal and outputting a 1PPS signal to the master control module; the time frequency signal input module is used for receiving IRIG-B codes, 1PPS and time frequency signals input from the outside of 10 MHz; the rubidium clock module is used for receiving the 1PPS signal sent by the main control module and outputting a 10MHz signal after the rubidium clock is locked; the master control module comprises an FPGA and an MCU dual processor, analyzes and processes the 1PPS signal output by the receiver module and the input signal of the time-frequency signal input module, sends the 1PPS signal to the rubidium clock module to discipline the rubidium clock and generate a system time-base signal, and the system time-base signal comprises 10MHz, 1PPS and TOD, so that the function card is automatically identified and controlled when the system time-base signal is in a punctual, self-walking and time service state; and the functional board card module comprises at least one functional card, and the functional card outputs time code signals which comprise IRIG-B codes, 1PPS, 10MHz, PTP and NTP. The technical scheme of the invention realizes the universality and expansibility of the system.

Description

Time code output system

Technical Field

The invention belongs to the field of time code application, and particularly relates to a universal time code output system.

Background

The time unification technology is a subject developed according to the field that the system time of national defense weaponry, space flight experiment and the like must be highly synchronized. With the progress of science and technology, the time code output system is widely applied to various fields, including modern communication, navigation, power dispatching, astronomy, geodetic survey, earthquake, traffic and the like. With the continuous expansion of user groups, the requirements for the type of time frequency signals and the number of channels output by the time code system are changing. In the prior art, no device can support the requirement of expanding the signal category and the channel number. The universal time code output system is developed, so that the defects of the prior art are alleviated, the expanding customization requirements of users can be met, the development period can be shortened, and the design cost can be saved.

In view of this, the present invention provides a time code output system, which improves the versatility and extensibility of the system compared with the prior art.

Disclosure of Invention

The technical scheme for solving the technical problems is as follows:

a time code output system, comprising: the system comprises a receiver module, a time-frequency signal input module, a rubidium clock module, a main control module and a functional board card module; the receiver module is used for receiving the Beidou/GPS signals, analyzing the time information of the Beidou/GPS signals and outputting 1PPS signals to the main control module; the time frequency signal input module is used for receiving IRIG-B codes, 1PPS and time frequency signals input from the outside of 10 MHz; the rubidium clock module is used for receiving the 1PPS signal sent by the main control module, outputting a 10MHz signal after the rubidium clock is locked, and improving the frequency accuracy of the output after the rubidium clock is disciplined by one order of magnitude; the master control module comprises an FPGA and an MCU dual processor, analyzes and processes the 1PPS signal output by the receiver module and the input signal of the time-frequency signal input module, sends the 1PPS signal to the rubidium clock module to discipline the rubidium clock and generate a system time-base signal, and the system time-base signal comprises 10MHz, 1PPS and TOD, so that the function card is automatically identified and controlled when the system time-base signal is in a punctual, self-walking and time service state; and the functional board card module comprises at least one functional card, and the functional card outputs time code signals which comprise IRIG-B codes, 1PPS, 10MHz, PTP and NTP.

Further, still include: the expansion input board card module comprises at least one expansion input card for realizing time code signal input which is not realized by the expansion time frequency signal input module, the expansion input card is inserted into the expansion input card slot, and the main control module carries out automatic identification.

Further, still include: and the screen display module displays the time information and the equipment running state information under the control of the main control module.

Further, still include: and the key control module is used for inquiring and modifying the running state of the equipment under the control of the main control module.

The invention has the following beneficial effects:

compared with the prior art, the time code output system provided by the invention supports the function of automatically identifying the type of the time code board card, and realizes the universality of the time code output system; the method supports dynamic time code board card type replacement to output different time code signals, and realizes the expansibility of a time code output system.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a time code output system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and embodiments, wherein the examples are provided for illustrative purposes only and are not intended to limit the scope of the present invention.

A time code output system is disclosed, as shown in FIG. 1, a receiver module, a time-frequency signal input module, a rubidium clock module, a main control module, a functional board card module, an expansion input board card module, a screen display module, a key control module and a network port and serial port communication module; the receiver module, the time-frequency signal input module, the rubidium clock module, the main control module and the functional board card module realize the basic functions of the time code output system, so that the time code output system can automatically identify the type of the time code board card and output time code signals of different channels.

And the receiver module is used for receiving the Beidou/GPS signals, analyzing the time information of the Beidou/GPS signals and outputting 1PPS signals to the main control module.

And the time frequency signal input module is used for receiving the IRIG-B code, the 1PPS and a time frequency signal externally input by 10 MHz.

And the rubidium clock module receives the 1PPS signal sent by the main control module, and is used for outputting a 10MHz signal after the rubidium clock is locked, and the frequency accuracy of the output after the rubidium clock is disciplined is improved by one order of magnitude.

The master control module comprises an FPGA and an MCU dual processor, analyzes and processes the 1PPS signal output by the receiver module and the input signal of the time-frequency signal input module, sends the 1PPS signal to the rubidium clock module to discipline the rubidium clock, generates a system time-base signal, and the system time-base signal comprises 10MHz, 1PPS and TOD, so that the function card is automatically identified and controlled when the function card is in a punctual state, self-propelled and timed.

The functional board card module comprises at least one functional card, such as functional card 1 … functional card N shown in figure 1, and the functional card outputs time code signals, wherein the time code signals comprise IRIG-B codes, 1PPS, 10MHz, PTP and NTP.

The expansion input board card module is used as an optional expansion module of the system, and as shown in fig. 1, the expansion input board module includes an expansion input card 1 and an expansion input card 2, so as to input a time code signal which is not realized by the expansion time-frequency signal input module, the expansion input card is inserted into an expansion input card slot, and the main control module performs automatic identification.

The screen display module is used as an optional expansion module of the system and displays time information and equipment running state information under the control of the main control module.

The key control module is used as an optional expansion module of the system and used for inquiring and modifying the running state of the equipment under the control of the main control module.

The network port and serial port communication module is used as an optional expansion module of the system and is interacted with the upper computer under the control of the main control module, so that the upper computer can inquire and modify equipment information.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A time code output system, comprising: the system comprises a receiver module, a time-frequency signal input module, a rubidium clock module, a main control module and a functional board card module;

the receiver module receives the Beidou/GPS signals, analyzes the time information of the Beidou/GPS signals and outputs 1PPS signals to the main control module;

the time frequency signal input module receives an IRIG-B code, 1PPS and a 10MHz externally input time frequency signal;

the rubidium clock module receives the 1PPS signal sent by the main control module, the rubidium clock is used for outputting a 10MHz signal after being locked, and the frequency accuracy output by the rubidium clock after being taminated is improved by one order of magnitude;

the master control module comprises an FPGA and an MCU dual processor, analyzes and processes the 1PPS signal output by the receiver module and the input signal of the time-frequency signal input module, sends the 1PPS signal to the rubidium clock module to discipline the rubidium clock and generate a system time-base signal, wherein the system time-base signal comprises 10MHz, 1PPS and TOD, and realizes time keeping, self-walking and time service, and automatic identification and control are carried out on the function card;

the function board card module comprises at least one function card, the function card outputs time code signals, and the time code signals comprise IRIG-B codes, 1PPS, 10MHz, PTP and NTP.

2. The time code output system according to claim 1, further comprising:

the expansion input board card module comprises at least one expansion input card, the time code signal input which is not realized by the time frequency signal input module is expanded, the expansion input card is inserted into an expansion input card slot, and the main control module carries out automatic identification.

3. The time code output system according to claim 1, further comprising:

and the screen display module displays time information and equipment running state information under the control of the main control module.

4. The time code output system according to claim 1, further comprising:

and the key control module is used for inquiring and modifying the running state of the equipment under the control of the main control module.

5. The time code output system according to claim 1, further comprising:

and the network port and serial port communication module is used for interacting with an upper computer under the control of the main control module so as to enable the upper computer to inquire and modify equipment information.