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IRIG-B (Inter-Range Instrumentation Group-B) code time hack device and time hack method thereof

A code element and P code technology, applied in the field of time synchronization of smart devices, can solve the problem of occupying many ports and lines, save ports and lines, and improve real-time and accuracy.

Inactive Publication Date: 2010-06-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing system uses the serial port to receive the IRIG-B code signal, which occupies more ports

Method used

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  • IRIG-B (Inter-Range Instrumentation Group-B) code time hack device and time hack method thereof
  • IRIG-B (Inter-Range Instrumentation Group-B) code time hack device and time hack method thereof
  • IRIG-B (Inter-Range Instrumentation Group-B) code time hack device and time hack method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] figure 2 It is the basic principle diagram of the IRIG-B code time synchronization device provided by Embodiment 1 of the present invention. figure 2 Among them, an IRIG-B code time synchronization device provided by the present invention includes a photoelectric isolator and a core chip, and the photoelectric isolator is connected to the core chip. The core chip can use the 32-bit high-performance chip model MCF52259 launched by Freescale Semiconductor in 2008. Its operating frequency can reach up to 80MHZ. It integrates 512K FLASH and 64K RAM inside, and uses its 16-bit counter module. (GTP), can easily complete the identification of the IRIG-B code symbol, and then realize the time synchronization of the IRIG-B code. The photoelectric isolation device is used to improve the anti-interference ability of the input IRIG-B code symbol signal.

Embodiment 2

[0029] image 3 It is the basic principle diagram of the IRIG-B code timing device provided by Embodiment 2 of the present invention. image 3 Among them, an IRIG-B code time synchronization device provided by the present invention includes a photoelectric isolator and a core chip, and also includes a level conversion chip. At this time, the connection mode of each device is: the photoelectric isolator is connected with the level conversion chip, and the level conversion chip is connected with the core chip. The level conversion chip can be a chip of model MAX3088, which is used to convert the IRIG-B code signal passing through the photoelectric isolator into a TTL level signal.

Embodiment 3

[0031] In this embodiment, a 32-bit high-performance chip of model MCF52259 is used as the core chip, and a chip of model MAX3088 is used as the level conversion chip as an example to illustrate the time synchronization process of the IRIG-B code.

[0032] First, follow the image 3 Connect the device, connect the photoelectric isolator to the MAX3088 chip, and connect the MAX3088 chip to the MCF52259 chip. Wherein, the connection between the MAX3088 chip and the MCF52259 chip is specifically, the connection between the MAX3088 chip and the GPT pin of the MCF52259 chip. Figure 4 It is the circuit diagram of the MCF52259 chip. Figure 4 In, the GPT pin of MCF52259 chip is Figure 4 The part outlined by the dotted line. In the present invention, when the MAX3088 chip is not used, the photoelectric isolator can be directly connected to the GPT pin of the MCF52259 chip.

[0033] Secondly, in the MCF52259 chip, a 16-bit counter module (GTP) is used. In the GTP module design, ...

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Abstract

The invention discloses an IRIG-B code time hack device and a time hack method thereof in the field of intelligent equipment time hack technology. The time hack device comprises an optoelectronic isolator and a core chip, wherein the optoelectronic isolator is connected with the core chip, and the core chip comprises a 16-bit counter module as well as a level conversion chip; and when the time hack device comprises the level conversion chip, the optoelectronic isolator is connected with the level conversion chip, and the level conversion chip is connected with the core chip. The time hack method comprises the following steps: receiving and identifying an IRIG-B code element; starting the 16-bit counter module according to the type of the IRIG-B code element; and identifying time information. By utilizing the 16-bit counter module in the core chip, the device directly carries out IRIG-B code time hack and increases the real-time performance and the accuracy of time hack; and simultaneously, the core chip uses one I / O (input / output) port, thereby saving ports and circuits.

Description

technical field [0001] The invention belongs to the technical field of time synchronization of intelligent equipment, in particular to an IRIG-B code time synchronization device and a time synchronization method. Background technique [0002] In recent years, due to the increase in electrical equipment and electricity consumption year by year, people have higher and higher requirements for the automation and safe operation of the power system, and an important condition for realizing the automation and safe operation of the power system is the accuracy and accuracy of the grid time. Unite. With the popularity of microcomputer automation devices in power systems, the power grid has more urgent requirements for time unification. GPS (Global Positioning System) is a highly accurate time release system, so it has been widely used in power systems gradually. The State Grid Corporation of China's "Notice on Strengthening Power System Clock Management" clearly requires the gradua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G7/00
Inventor 秦立军李文彦
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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