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USB (Universal Serial Bus) storage circuit for online monitor of cable

A technology for storage circuits and monitors, which is applied in the direction of instruments, measuring electronics, measuring devices, etc., and can solve the problems of not being able to save cables all the time

Inactive Publication Date: 2012-02-15
大连大工安道船舶技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of the above-mentioned prior art, the situation of the cable cannot be saved from time to time for later specific analysis

Method used

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  • USB (Universal Serial Bus) storage circuit for online monitor of cable
  • USB (Universal Serial Bus) storage circuit for online monitor of cable
  • USB (Universal Serial Bus) storage circuit for online monitor of cable

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Embodiment Construction

[0009] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0010] refer to figure 1 , in this embodiment, for the convenience of the present invention, the 24-hour current, temperature and other changes of the cable are recorded, and the instrument itself also saves the data, which is beneficial to the analysis of the normal operation status of the cable, and accumulates a large amount of data for the follow-up cable life judgment. data. And provide USB data download port, you can download data very conveniently at any time. Of course, the running status of the cable is also displayed on the LCD screen of the instrument in real time during the on-site online monitoring. It is a reference for operators on site to judge the working status of cables.

[0011] Specific circuits (such as figure 2 ) The whole circuit is controlled by the main control chip U1. The power supply of the chip U1 is 3.3V. The 3.3V i...

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Abstract

The invention discloses a USB (Universal Serial Bus) storage circuit for an online monitor of a cable. The USB storage circuit can be used for monitoring the online state of the cable and acquiring various information changes, even weak information changes in time, processing and comprehensively analyzing the information and judging the reliability of the cable and predicating the residual life of the cable according to the numeric value magnitude and the change trend of the information, thereby latent faults can be found at early stage and early warning or specified operation can be provided as necessary. The USB storage circuit can also be used for testing current of various power cables with copper and aluminum cores in marine power and shore power voltage grades, the cable temperature and high-resistance leakage faults.

Description

technical field [0001] The invention relates to a USB storage circuit of a cable online monitor, which belongs to the field of cable detection. Background technique [0002] The aging of cables and the development of defects are statistical, and the speed of development also varies, and most of them have a certain development period. During this period, there will be various early signs, manifested as a small amount of gradual changes in its electrical, physical, chemical and other characteristics. [0003] At present, there are many monitoring instruments for cable insulation, temperature, current, etc., but because the sensor itself has a large error (usually ±2%), it affects the accuracy of sampling, and the current sensor is usually in the form of a transformer, which increases the The volume of the instrument itself limits the installation in places where the space is relatively narrow. And the situation of the cable cannot be saved from time to time for later specifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
Inventor 周长亮滕传龙
Owner 大连大工安道船舶技术股份有限公司
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