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A baud rate calibration method, device and system

A calibration method and baud rate technology, applied in power oscillators, electrical components, etc., can solve the problems of inaccurate calibration, high cost of calibration baud rate, easy to be affected by the environment, etc., to reduce costs and improve calibration accuracy. Effect

Active Publication Date: 2016-06-22
NANJING LINYANG ELECTRIC POWER TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a baud rate calibration method, which aims to solve the current problems of high cost of calibrating the baud rate and being easily affected by the environment, resulting in inaccurate calibration

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  • A baud rate calibration method, device and system
  • A baud rate calibration method, device and system
  • A baud rate calibration method, device and system

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] In the embodiment of the present invention, the oscillation error is calculated by obtaining the zero-crossing point of the power frequency, and the baud rate is compensated according to the oscillation error, so as to realize automatic calibration.

[0021] figure 1 The implementation flow of the baud rate calibration method provided by the first embodiment of the present invention is shown, and for the convenience of description, only the parts related to the present invention are shown.

[0022] As an embodiment of the present invention, the baud rate calibration method includes the foll...

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Abstract

The invention belongs to the field of meter reading, and provides a method, a device and a system of calibration of a baud rate. The method comprises the following steps: obtaining a plurality of zero crossing points in power frequency and recording capture time and a zero crossing count value; calculating a reference cycle according to the zero crossing count value and calculating a vibration error according to the reference cycle and the capture time; and compensating the baud rate according to the vibration error to calibrate the baud rate. According to the method, the device and the system of the calibration of the baud rate, the vibration error is calculated according to the zero crossing points of the power frequency, and a baud rate timer is compensated according to the vibration error, so that the automatic calibration is achieved, cost is low and precision is high.

Description

technical field [0001] The invention belongs to the field of meter reading, in particular to a baud rate calibration method, device and system. Background technique [0002] In the power system, communication is essential, especially in the low-voltage centralized meter reading system, the carrier wave and communication between the electric energy meter, the collector, and the centralized meter reading terminal. Ensure sufficient success rate and accuracy rate. [0003] The current common practice is to use a high-cost microprocessor with a good temperature coefficient and an external crystal oscillator to form a baud rate generation system, but this method is costly, and the calibration is inaccurate due to factors such as the aging of the crystal oscillator. Contents of the invention [0004] The purpose of the embodiments of the present invention is to provide a baud rate calibration method, aiming at solving the current problems of high cost of baud rate calibration a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03B5/04
Inventor 吴镲
Owner NANJING LINYANG ELECTRIC POWER TECHNOLOGY CO LTD