CN115529259A - Novel signal delay measuring and synchronizing method - Google Patents
Novel signal delay measuring and synchronizing method Download PDFInfo
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- CN115529259A CN115529259A CN202111545879.4A CN202111545879A CN115529259A CN 115529259 A CN115529259 A CN 115529259A CN 202111545879 A CN202111545879 A CN 202111545879A CN 115529259 A CN115529259 A CN 115529259A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims abstract description 11
- 230000008054 signal transmission Effects 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
- H04L43/0858—One way delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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Abstract
The invention discloses a new signal delay measurement and synchronization method, in particular to the technical field of signal delay measurement, which comprises the following steps: s1: acquiring microsecond-level accurate time by adding GPS equipment; s2: the method comprises the steps that the master equipment obtains accurate time and then sends the accurate time to the slave equipment through a radio station; s3: after receiving the accurate time of the master device, the slave device subtracts the accurate time of the slave device to obtain the transmission delay time; s4: in the later acquisition, synchronous acquisition is carried out according to the measured delay; the system comprises radio equipment 1, radio equipment 2, a GPS positioning module 1, a GPS positioning module 2, a data acquisition module, a data sending module, a processing unit and a background computer terminal, wherein the radio equipment 1 is electrically connected with the GPS positioning module 1, and the GPS positioning module 1 is in data connection with the data acquisition module; by additionally arranging the GPS equipment on 2 pieces of equipment, a signal transmission delay test is carried out after each position movement, and the transmission delay time parameter is manually calibrated to realize 2-place synchronous acquisition.
Description
Technical Field
The invention relates to the technical field of signal delay measurement, in particular to a novel signal delay measurement and synchronization method.
Background
Propagation delay (tpd), the symbol, is the time required for a digital signal to pass from the input(s) to the output of the logic gate; 1) Propagation delay (tpd), the symbol, is the time required for a digital signal to pass from the input(s) to the output of the logic gate; the time of the propagation delay is typically measured in microseconds (μ s), nanoseconds (ns), or picoseconds (ps), with 1 μ s =10-6 seconds, 1ns =10-9 seconds, and 1ps =10-12 seconds; the propagation delay of an Integrated Circuit (IC) logic gate may differ for one input; the average propagation delay of a logic gate integrated circuit increases with the complexity of the internal circuitry if all other factors are fixed to be constant; some ic technologies allow the longer tpd value of interinventy to exceed others, i.e., to be considered slower; in digital devices such as computers, propagation delay is important because of the direct influence on speed. This applies to memory chips and microprocessors; 2) In a communication system, propagation delay refers to the time required for a signal to travel from a source to a destination; the delay time can vary from up to about 0.25 seconds for satellite communication systems to several nanoseconds or microseconds for Local Area Networks (LANs).
In the process of data acquisition in production, two devices are required to output acquisition instructions simultaneously to ensure the consistency of the data of the two places, but the devices 2 in the synchronous acquisition process do not have a unified clock system and can only send signal instructions with delayed acquisition through a radio system, namely, one device is used as a main device to send out a signal instruction which is to be acquired after 5S, and the other device acquires the data after the acquisition time of 5S minus the delay caused by radio station transmission; the station delay sets a fixed value before acquisition begins.
The signal delay measurement in the prior art has the following problems:
1. but 2 devices change with location. The originally set fixed delay is not suitable for a new acquisition environment, so that errors occur in the 2 nd data, and the synchronism of the acquired data is influenced;
2. the positions of the 2 devices are not fixed, and each change of the positions leads to the increase and decrease of the transmission time, so that the fixed transmission delay is not applicable.
Disclosure of Invention
It is an object of the present invention to provide a new signal delay measurement and synchronization method to solve the above-mentioned problems in the background art.
In order to solve the technical problems, the invention adopts the following technical scheme: a new signal delay measurement and synchronization method comprising the steps of:
s1: acquiring microsecond-level accurate time by adding GPS equipment;
s2: the method comprises the steps that the master equipment obtains accurate time and then sends the accurate time to the slave equipment through a radio station;
s3: after receiving the accurate time of the master device, the slave device subtracts the accurate time of the slave device to obtain the transmission delay time;
s4: in later acquisitions, synchronous acquisition is performed according to the measured delay.
Radio station equipment 1, radio station equipment 2, GPS orientation module 1, GPS orientation module 2, data acquisition module, data transmission module, processing unit and backstage computer terminal.
Preferably, radio station equipment 1 and GPS positioning module 1 electric connection, GPS positioning module 1 and data acquisition module data connection, radio station equipment 2 and GPS positioning module 2 electric connection, GPS positioning module 2 and data acquisition module data connection.
Preferably, the data acquisition module is in data connection with the data transmission module, the data transmission module is in data connection with the processing unit, and the processing unit is electrically connected with the background computer terminal.
Preferably, the processing unit comprises a signal generator, a background processor, a GPS calibration station and a radio transmitter.
Preferably, the signal generator is in communication connection with a GPS calibration radio station, the background processor is electrically connected with the GPS calibration radio station, and the GPS calibration radio station is electrically connected with the radio transmitter.
Preferably, the S1 includes a GPS positioning module 1 and a GPS positioning module 2 respectively attached to the radio station apparatus 1 and the radio station apparatus 2.
Preferably, S2 includes acquiring, by the background computer terminal, the precise time of the transmitted data and transmitting the time to the radio station device 1 and the radio station device 2 via the radio transmitter.
Preferably, the step S3 includes acquiring, by the background computer terminal, time data of signal transmission delay after the positions of the radio station device 1 and the radio station device 2 move, acquired by the GPS positioning module 1 and the GPS positioning module 2, and then calculating the time difference.
Preferably, the step S4 includes performing a signal transmission delay test after each position movement, and manually calibrating a transmission delay time parameter to implement 2-step synchronous acquisition.
Compared with the prior art, the invention has the beneficial effects that:
the method comprises the steps that a GPS device is added to obtain microsecond-level accurate time, a master device obtains the accurate time, the microsecond-level accurate time is sent to a slave device through a radio station, the slave device subtracts the accurate time of the slave device after receiving the accurate time of the master device to obtain transmission delay time, in the later acquisition, synchronous acquisition is carried out according to the measured delay, the radio station transmission delay is calibrated through the GPS to achieve synchronous acquisition, and the delay time can be measured and corrected for multiple times in the acquisition work; the time synchronism during collection can be ensured, and the working efficiency is greatly improved.
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 the drawings without creative efforts.
Fig. 1 is a flow chart of a new signal delay measurement and synchronization method of the present invention.
Fig. 2 is a schematic diagram illustrating a new signal delay measurement and synchronization method according to the present invention.
FIG. 3 is a schematic diagram of a processing unit according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1-3, the present invention provides a new signal delay measurement and synchronization method, comprising the steps of:
s1: acquiring microsecond-level accurate time by adding GPS equipment;
s2: the master equipment acquires the accurate time and then sends the accurate time to the slave equipment through the radio station;
s3: after receiving the accurate time of the master device, the slave device subtracts the accurate time of the slave device to obtain the transmission delay time;
s4: in later acquisitions, synchronous acquisition is performed according to the measured delay.
Radio station equipment 1, radio station equipment 2, GPS orientation module 1, GPS orientation module 2, data acquisition module, data transmission module, processing unit and backstage computer terminal.
Further, radio station equipment 1 and GPS orientation module 1 electric connection, GPS orientation module 1 and data acquisition module data connection, radio station equipment 2 and GPS orientation module 2 electric connection, GPS orientation module 2 and data acquisition module data connection.
Furthermore, the data acquisition module is in data connection with the data transmission module, the data transmission module is in data connection with the processing unit, and the processing unit is electrically connected with the background computer terminal.
Further, the processing unit includes a signal generator, a background processor, a GPS calibration station, and a radio transmitter.
Further, signal generator and GPS calibration radio station communication connection, backstage treater and GPS calibration radio station electric connection, GPS calibration radio station electric connection and radio transmitter electric connection.
Further, S1 includes through install GPS orientation module 1 and GPS orientation module 2 additional respectively on radio station equipment 1 and radio station equipment 2.
Further, the step S3 includes acquiring, by the background computer terminal, time data of signal transmission delay after the positions of the radio station device 1 and the radio station device 2 move, which is acquired by the GPS positioning module 1 and the GPS positioning module 2, and then calculating the time difference.
Further, S4 includes performing a signal transmission delay test after each position movement, and manually calibrating a transmission delay time parameter to implement 2-step synchronous acquisition.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A new method of signal delay measurement and synchronization, characterized by: the method comprises the following steps:
s1: acquiring microsecond-level accurate time by adding GPS equipment;
s2: the method comprises the steps that the master equipment obtains accurate time and then sends the accurate time to the slave equipment through a radio station;
s3: after receiving the accurate time of the master device, the slave device subtracts the accurate time of the slave device to obtain the transmission delay time;
s4: in later acquisitions, synchronous acquisition is performed according to the measured delay.
The system comprises radio equipment 1, radio equipment 2, a GPS positioning module 1, a GPS positioning module 2, a data acquisition module, a data sending module, a processing unit and a background computer terminal.
2. The new signal delay measuring and synchronizing method as claimed in claim 1, wherein the radio equipment 1 is electrically connected to the GPS positioning module 1, the GPS positioning module 1 is in data connection with the data acquisition module, the radio equipment 2 is electrically connected to the GPS positioning module 2, and the GPS positioning module 2 is in data connection with the data acquisition module.
3. The method as claimed in claim 2, wherein the data acquisition module is in data connection with a data transmission module, the data transmission module is in data connection with a processing unit, and the processing unit is electrically connected with the background computer terminal.
4. A new method of signal delay measurement and synchronization as in claim 1 wherein said processing unit comprises a signal generator, a background processor, a GPS calibration station and a radio transmitter.
5. The method as claimed in claim 4, wherein the signal generator is communicatively connected to a GPS calibration radio, the background processor is electrically connected to the GPS calibration radio, and the GPS calibration radio is electrically connected to the radio transmitter.
6. A new signal delay measuring and synchronizing method as claimed in claim 1, wherein said S1 comprises a GPS positioning module 1 and a GPS positioning module 2 respectively installed on the radio equipment 1 and the radio equipment 2.
7. A new signal delay measurement and synchronization method as claimed in claim 1, characterized in that S2 comprises acquiring the exact time of the transmitted data by the background computer terminal and sending to station 1 and station 2 via the radio transmitter.
8. The new signal delay measuring and synchronizing method according to claim 1, wherein the step S3 comprises acquiring time data of signal transmission delay after the position of the radio equipment 1 and the radio equipment 2 is moved through the GPS positioning module 1 and the GPS positioning module 2 by the background computer terminal and then calculating the time difference.
9. The method as claimed in claim 1, wherein S4 includes performing a signal transmission delay test after each position shift, and artificially calibrating the transmission delay time parameter to achieve 2-step synchronous acquisition.
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| CN202111545879.4A CN115529259A (en) | 2021-12-16 | 2021-12-16 | Novel signal delay measuring and synchronizing method |
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| CN113259082A (en) * | 2021-06-08 | 2021-08-13 | 中汽创智科技有限公司 | Heterogeneous sensor synchronization method and device, vehicle and storage medium |
| CN113747563A (en) * | 2021-09-03 | 2021-12-03 | 国网江苏省电力有限公司电力科学研究院 | Synchronous acquisition method and device for power internet of things sensors |
-
2021
- 2021-12-16 CN CN202111545879.4A patent/CN115529259A/en active Pending
Patent Citations (6)
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| US20040024550A1 (en) * | 2000-09-19 | 2004-02-05 | Heinrich Doerken | Method for measuring unidirectional transmission characteristics such as packet propagation time, fluctuations in propagation time and results derivable therefrom, in a telecommunications network |
| JP2015032997A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｋｄｄｉ研究所 | Base station device, control method of the same, and program |
| CN106341879A (en) * | 2016-05-24 | 2017-01-18 | 北京动量科技有限责任公司 | GPS time reference-based multi-point synchronous communication method and device |
| CN112532472A (en) * | 2020-11-09 | 2021-03-19 | 广东电网有限责任公司广州供电局 | Method for testing uploading delay of phasor measurement unit |
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