CN212343769U - Test system for IRIG-B code output function of time system terminal - Google Patents
Test system for IRIG-B code output function of time system terminal Download PDFInfo
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- CN212343769U CN212343769U CN202021465449.2U CN202021465449U CN212343769U CN 212343769 U CN212343769 U CN 212343769U CN 202021465449 U CN202021465449 U CN 202021465449U CN 212343769 U CN212343769 U CN 212343769U
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Abstract
The utility model relates to the technical field of aviation, concretely relates to time system terminal IRIG-B sign indicating number output function's test system, including time system terminal, B sign indicating number test terminal and time precision tester, time system terminal is connected with B sign indicating number test terminal through first signal connection line, second signal connection line respectively, time system terminal, first signal connection line, second signal connection line are connected with time precision tester respectively, and time system terminal includes first display module, and B sign indicating number test terminal includes second display module, first display module, second display module all are used for showing time information. The utility model discloses a set up first switch on first signal connection line, set up the second switch on the second signal connection line, through first switch of rational control and second switch, only export specific signal to B sign indicating number test terminal when guaranteeing to the terminal, and then effectively improve test system to the test accuracy and the efficiency of software testing at the terminal of making the correct time.
Description
Technical Field
The utility model relates to an aviation technical field, concretely relates to time system terminal IRIG-B sign indicating number output function's test system.
Background
The time unifying system is a system for providing a unified standard time signal and a standard frequency signal for the measurement and control system. The space flight measurement and control equipment has many types, large quantity and wide distribution, and if the time length is not unified, the task cannot be completed at all. The system provides accurate time when key event characteristic points such as launching takeoff time (L), ignition and shutdown time of each stage of rocket engine, separation time, data injection time, satellite (ship) and rocket separation time, spacecraft orbit time and the like are required. The continuous, reliable and stable operation of the time unification system is the premise of normal work of the measurement and control system, and the performance of the time unification system directly influences the measurement precision and the measurement system of the aerospace measurement and control system.
The standardized time system equipment consists of a timing frequency calibration unit, a frequency standard unit, a time code generation unit, a time code distinguishing unit, a monitoring computer and the like. The timing frequency correction unit is generally provided with a GPS and a timing frequency correction means of a long-short wave time service system; the frequency standard unit comprises a rubidium atomic frequency standard and a universal quartz frequency standard to form a local redundant frequency standard; the time code generating unit forms a B time code in a standard format through more than 3 redundant modules, and the B time code is distributed and transmitted to nearby user equipment through the time code distinguishing unit; the monitoring microcomputer visually displays the parameters and the states of all the units and reports the running condition of the equipment to the upper-level network management.
Before time system equipment drops into practical application, indispensable be that IRIG-B sign indicating number output function to time system equipment detects, and among the prior art, lack the accurate means that detects to time system equipment IRIG-B sign indicating number output function, have the high-efficient production that hinders time system equipment, for this reason, the utility model provides a simple structure uses convenient time system terminal IRIG-B sign indicating number output function's test system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a time system terminal IRIG-B sign indicating number output function's test system, through set up first switch on first signal connection line, set up the second switch on the second signal connection line, through first switch of rational control and second switch, only export specific signal to B sign indicating number test terminal when guaranteeing, and then effectively improve test system to the test accuracy and the efficiency of software testing at system terminal.
The purpose of the utility model is realized through the following technical scheme:
a test system for an IRIG-B code output function of a timing terminal comprises the timing terminal, a B code test terminal and a time precision tester, wherein the timing terminal is connected with the B code test terminal through a first signal connecting line and a second signal connecting line respectively, the first signal connecting line is used for transmitting B (AC) signals, and the second signal connecting line is used for transmitting B (DC) signals; the time system terminal, the first signal connecting line and the second signal connecting line are respectively connected with the time precision tester, the time system terminal comprises a first display module, the B code test terminal comprises a second display module, and the first display module and the second display module are both used for displaying time information.
Furthermore, the test system also comprises a power supply, and the time system terminal, the B code test terminal and the time precision tester are respectively connected with the power supply. When the IRIG-B code output function of the timing terminal needs to be detected, the timing terminal, the B code test terminal and the time precision tester are respectively connected with a power supply, then the timing terminal is respectively connected with the B code test terminal through a first signal connecting line and a second signal connecting line, the timing terminal, the first signal connecting line and the second signal connecting line are respectively connected with the time precision tester, then the time of the B code test terminal is firstly modified, so that the time of the B code test terminal is inconsistent with the time of the timing terminal, then the timing terminal is controlled to input an IRIG-B (AC) signal to the B code test terminal, the B code test terminal is timed, and whether the time displayed by a second display module of the B code test terminal is consistent with the time displayed by a first display module of the timing terminal is observed; secondly, modifying the time of the B code test terminal again to ensure that the time of the B code test terminal is inconsistent with the time of the timing terminal again, then controlling the timing terminal to input an IRIG-B (DC) signal to the B code test terminal, carrying out time service on the B code test terminal, and observing whether the time displayed by a second display module of the B code test terminal is consistent with the time displayed by a first display module of the timing terminal; connecting a 1PPS output signal of a time system terminal into a time precision tester as a trigger signal, controlling the time system terminal to input an IRIG-B (AC) signal into the time precision tester, and observing whether the phase difference between the 1PPS output signal and the IRIG-B (AC) signal meets the requirement; then, accessing a 1PPS output signal of the time system terminal into the time precision tester as a trigger signal, controlling the time system terminal to input an IRIG-B (DC) signal to the time precision tester, and observing whether the phase difference between the 1PPS output signal and the IRIG-B (DC) signal meets the requirement; and then judging whether the IRIG-B code output function of the time system terminal is qualified or not according to each test result.
Furthermore, a first switch is arranged on the first signal connecting line.
Furthermore, a second switch is arranged on the second signal connecting line. The first switch is arranged on the first signal connecting line, the second switch is arranged on the second signal connecting line, when the control is needed, the system terminal only inputs IRIG-B (AC) signals to the B code test terminal, the first switch is arranged on the first signal connecting line in a connection and opening mode, the second switch on the second signal connecting line is disconnected, and therefore the condition that the system terminal only outputs the IRIG-B (AC) signals to the B code test terminal is ensured; similarly, when the control is needed, the system terminal only inputs an IRIG-B (DC) signal to the B code test terminal, a second switch is arranged on a second signal connecting line in a connection and opening mode, and a first switch on a first signal connecting line is disconnected, so that the system terminal is ensured to only output the IRIG-B (DC) signal to the B code test terminal.
Furthermore, the connection between the time system terminal and the time precision tester means that the time system terminal is connected to the time precision tester through a 1PPS output signal.
Further, the time precision tester is an oscilloscope.
Further, the time precision tester is a dual-channel digital oscilloscope.
Further, the time precision tester comprises a timing module, and the timing module is used for recording time information corresponding to the received signal of the time precision tester.
The utility model has the advantages that: the utility model discloses time system terminal IRIG-B sign indicating number output function's test system through set up first switch on first signal connection line, sets up the second switch on the second signal connection line, through the first switch of rational control and second switch, and the time system terminal only exports specific signal to B sign indicating number test terminal when guaranteeing, and then effectively improves test system to the test accuracy and the efficiency of software testing at time system terminal.
Drawings
FIG. 1 is a schematic diagram of a module connection of the testing system of the present invention;
in the figure, 1, a time system terminal; 101. a first display module; 2. b code test terminal; 201. a second display module; 3. a time precision tester; 4. a first signal connection line; 5. a second signal connection line; 6. a power source; 7. a first switch; 8. a second switch.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
The IRIG-B code is a common serial transmission mode in a time system, and compared with a parallel transmission mode, the IRIG-B code is continuous and simple in physics, long in transmission distance, standardized in interface and universal in the world. The time system is called the time system for short.
The IRIG-B code comprises two modes: b (DC) code and B (AC) code, (DC is a digital signal and AC is an analog modulated sinusoidal signal), and IRIG-B time code is a one frame per second time code.
As shown in fig. 1, a test system for an IRIG-B code output function of a timing terminal includes a timing terminal 1, a B code test terminal 2, and a time precision tester 3, where the timing terminal 1 is connected to the B code test terminal 2 through a first signal connection line 4 and a second signal connection line 5, the first signal connection line 4 is used for transmitting B (ac) signals, and the second signal connection line 5 is used for transmitting B (dc) signals; the time system terminal 1, the first signal connecting line 4 and the second signal connecting line 5 are respectively connected with the time precision tester 3, the time system terminal 1 comprises a first display module 101, the B code test terminal 2 comprises a second display module 201, and the first display module 101 and the second display module 201 are both used for displaying time information.
Specifically, the test system further comprises a power supply 6, and the time system terminal 1, the B code test terminal 2 and the time precision tester 3 are respectively connected with the power supply 6. When the IRIG-B code output function of the timing terminal 1 needs to be detected, the timing terminal 1, the B code testing terminal 2 and the time precision tester 3 are respectively connected with a power supply 6, then the timing system terminal 1 is connected with the B code test terminal 2 through a first signal connecting line 4 and a second signal connecting line 5 respectively, and the time system terminal 1, the first signal connecting line 4 and the second signal connecting line 5 are respectively connected with the time precision tester 3, then firstly, the time of the B code test terminal 2 is modified, so that the time of the B code test terminal 2 is inconsistent with the time of the timing terminal 1, then the control time system terminal 1 inputs IRIG-B (AC) signal to the B code test terminal 2, the method comprises the steps of carrying out time service on a B code test terminal 2, and observing whether the time displayed by a second display module 201 of the B code test terminal 2 is consistent with the time displayed by a first display module 101 of a timing terminal 1; then, the time of the B code test terminal 2 is modified again, so that the time of the B code test terminal 2 is inconsistent with the time of the clock terminal 1 again, then the clock terminal 1 is controlled to input an IRIG-B (DC) signal to the B code test terminal 2, time service is carried out on the B code test terminal 2, and whether the time displayed by the second display module 201 of the B code test terminal 2 is consistent with the time displayed by the first display module 101 of the clock terminal 1 or not is observed; accessing a 1PPS output signal of a time system terminal 1 into a time precision tester 3 as a trigger signal, controlling the time system terminal 1 to input an IRIG-B (AC) signal into the time precision tester 3, and observing whether the phase difference between the 1PPS output signal and the IRIG-B (AC) signal meets the requirement or not; then, accessing the 1PPS output signal of the time system terminal 1 into the time precision tester 3 as a trigger signal, controlling the time system terminal 1 to input an IRIG-B (DC) signal to the time precision tester 3, and observing whether the phase difference between the 1PPS output signal and the IRIG-B (DC) signal meets the requirement or not; and then judging whether the IRIG-B code output function of the time system terminal 1 is qualified or not according to each test result.
Specifically, a first switch 7 is disposed on the first signal connection line 4.
Specifically, a second switch 8 is disposed on the second signal connection line 5. By arranging the first switch 7 on the first signal connecting line 4 and the second switch 8 on the second signal connecting line 5, when control is needed, the system terminal 1 only inputs IRIG-B (AC) signals to the B code test terminal 2, the first switch 7 is arranged on the first signal connecting line 4 when connection and starting are carried out, the second switch 8 on the second signal connecting line 5 is disconnected, and the condition that the system terminal 1 only outputs the IRIG-B (AC) signals to the B code test terminal 2 is ensured; similarly, when the control is needed, the system terminal 1 only inputs an IRIG-B (dc) signal to the B code test terminal 2, the second switch 8 is arranged on the second signal connection line 5, and the first switch 7 on the first signal connection line 4 is turned off, so that the system terminal 1 is ensured to only output an IRIG-B (dc) signal to the B code test terminal 2.
Specifically, the connection between the time system terminal 1 and the time precision tester 3 means that the time system terminal 1 accesses the time precision tester 3 through a 1PPS output signal.
Specifically, the time precision tester 3 is an oscilloscope.
Specifically, the time precision tester 3 is a dual-channel digital oscilloscope.
Specifically, the time precision tester 3 includes a timing module, and the timing module is configured to record time information corresponding to a signal received by the time precision tester 3. Preferably, the B code test terminal 2 is a B code test terminal 2 conforming to the GJB2991-2008 standard.
When in use, when the IRIG-B code output function of the timing terminal 1 needs to be detected, the timing terminal 1, the B code test terminal 2 and the time precision tester 3 are respectively connected with the power supply 6, then the timing terminal 1 is respectively connected with the B code test terminal 2 through the first signal connecting wire 4 and the second signal connecting wire 5, and the timing terminal 1, the first signal connecting wire 4 and the second signal connecting wire 5 are respectively connected with the time precision tester 3,
step S1, firstly, modifying the time of the B code test terminal 2 to ensure that the time of the B code test terminal 2 is inconsistent with the time of the timing terminal 1, communicating the first switch 7, closing the second switch 8, then controlling the timing terminal 1 to input an IRIG-B (AC) signal to the B code test terminal 2, timing the B code test terminal 2, and observing whether the time displayed by the second display module 201 of the B code test terminal 2 is consistent with the time displayed by the first display module 101 of the timing terminal 1;
step S2, then, modifying the time of the B code test terminal 2 again to make the time of the B code test terminal 2 inconsistent with the time of the timing terminal 1 again, connecting the second switch 8, closing the first switch 7, then controlling the timing terminal 1 to input an IRIG-B (DC) signal to the B code test terminal 2, timing the B code test terminal 2, and observing whether the time displayed by the second display module 201 of the B code test terminal 2 is consistent with the time displayed by the first display module 101 of the timing terminal 1;
step S3, connecting the 1PPS output signal of the time system terminal 1 into a dual-channel digital oscilloscope as a trigger signal, controlling the time system terminal 1 to input an IRIG-B (AC) signal into the dual-channel digital oscilloscope, and observing whether the phase difference between the 1PPS output signal and the IRIG-B (AC) signal meets the requirement of being less than or equal to 0.2 us;
step S4, connecting the 1PPS output signal of the time system terminal 1 into a dual-channel digital oscilloscope as a trigger signal, controlling the time system terminal 1 to input an IRIG-B (DC) signal into the dual-channel digital oscilloscope, and observing whether the phase difference between the 1PPS output signal and the IRIG-B (DC) signal meets the requirement of being less than or equal to 0.2 us;
and then judging whether the IRIG-B code output function of the time unification terminal 1 is qualified or not according to the test results of the steps, if the test results in the steps all meet the requirements, judging the IRIG-B code output function to be qualified, and otherwise, judging the IRIG-B code output function to be unqualified.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. A test system for an IRIG-B code output function of a timing terminal is characterized by comprising the timing terminal, a B code test terminal and a time precision tester, wherein the timing terminal is respectively connected with the B code test terminal through a first signal connecting line and a second signal connecting line, the first signal connecting line is used for transmitting B (AC) signals, and the second signal connecting line is used for transmitting B (DC) signals; the time system terminal, the first signal connecting line and the second signal connecting line are respectively connected with the time precision tester, the time system terminal comprises a first display module, the B code test terminal comprises a second display module, and the first display module and the second display module are both used for displaying time information.
2. The system for testing the IRIG-B code output function of the timing terminal according to claim 1, wherein the system further comprises a power supply, and the timing terminal, the B code testing terminal and the time precision tester are respectively connected to the power supply.
3. The system for testing IRIG-B code output function of time system terminal as claimed in claim 1, wherein said first signal connection line is provided with a first switch.
4. The system for testing the IRIG-B code output function of the time system terminal as claimed in claim 1, wherein a second switch is disposed on the second signal connection line.
5. The system for testing the IRIG-B code output function of the time system terminal as claimed in claim 1, wherein the time system terminal is connected to the time accuracy tester through a 1PPS output signal.
6. The system for testing the IRIG-B code output function of the time system terminal as claimed in claim 1, wherein the time accuracy tester is an oscilloscope.
7. The system for testing the IRIG-B code output function of the time system terminal as claimed in claim 1, wherein the time precision tester is a dual-channel digital oscilloscope.
8. The system for testing the IRIG-B code output function of the time system terminal as claimed in claim 1, wherein the time precision tester comprises a timing module, and the timing module is configured to record time information corresponding to a signal received by the time precision tester.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021465449.2U CN212343769U (en) | 2020-07-22 | 2020-07-22 | Test system for IRIG-B code output function of time system terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021465449.2U CN212343769U (en) | 2020-07-22 | 2020-07-22 | Test system for IRIG-B code output function of time system terminal |
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| CN212343769U true CN212343769U (en) | 2021-01-12 |
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| CN202021465449.2U Active CN212343769U (en) | 2020-07-22 | 2020-07-22 | Test system for IRIG-B code output function of time system terminal |
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