Fault detecting device of ship-used log

A technology of fault detection and speed log, which is applied in the direction of measuring devices, instruments, etc., can solve the problems of increased workload, etc., and achieve the effects of good reliability, low working voltage and power consumption, and simple structure

Inactive Publication Date: 2009-11-11
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main microcomputer board, differential pressure board, electromagnetic board, current frequency conversion, power supply board, display board, etc. in the log module will enter a period of frequent failures, and the workload of daily maintenance will increase day by day

Method used

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  • Fault detecting device of ship-used log
  • Fault detecting device of ship-used log
  • Fault detecting device of ship-used log

Examples

Experimental program
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Embodiment Construction

[0027] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0028] combine figure 1 , the present invention comprises data processor U1, data acquisition unit U3, multiplexer U2, communication interface unit U4, log meter U5, PC machine U6, wherein U1 adopts AT89C51 chip, U2 adopts CD4051 chip, U3 adopts ADC574 chip , U4 adopts MAX232 chip.

[0029] combine figure 2 , the input end of the multiplexer U2 is respectively connected with the output signals of the main microcomputer board, the pressure difference digital-analog conversion board, the electromagnetic digital-analog conversion board, the current-frequency conversion board, the power supply board, and the power amplifier board in the log meter U5, Wherein, the output of the current-frequency conversion board is a frequency signal. The data processor U1 controls the three binary control input terminals and the enable terminal of U2 to determine which channel is ...

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Abstract

The invention provides a fault detecting device of a ship-used log, which comprises a data processor (U1), a multiplex strobe (U2), a data collecting unit (U3), a communication interface unit (U4), a log (U5), a personal computer (PC) (U6). The input end of the multiplex strobe (U2) is connected with the log (U5). The data processor (U1) controls the three binary normal control input ends and enable ends of the multiplex strobe (U2) and determines which way is strobed. The output end of the multiplex strobe (U2) is connected with the input end of the data collecting unit (U3) to carry out the A / D conversion of the signals of the strobed way. The data processor (U1) judges the conversion status by inquiring and finishes the reading and writing operations. The data transmission is realized between the data processor (U1) and the PC (U6) by the communication interface unit (U4). Then the PC (U6) can detect the faults of all cards of the log (U5). The device can be arranged on any ship and can carry out the high-efficient and reliable fault diagnosis and fault locating at any time without the help of professional personnel.

Description

(1) Technical field [0001] The invention relates to a fault detection device, in particular to a fault detection technology for marine equipment. (2) Background technology [0002] The log is widely equipped on various surface ships and underwater submersibles, and is one of the main modern navigation equipment. By measuring the instantaneous speed of the ship relative to seawater, the log provides speed and voyage information for the ship's navigation and accumulates the voyage. At present, the main modules of the ship log include the main microcomputer board, differential pressure digital-analog conversion board, electromagnetic digital-analog conversion board, current frequency conversion board, power supply board, power amplifier board, etc., and adopt the principle of electromagnetic and differential pressure composite speed measurement The electromagnetic voltage and the differential voltage are respectively obtained, and then the corresponding processing is carried o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
Inventor 刘胜王宇超陈森焱李冰李芃
Owner HARBIN ENG UNIV
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