Portable line fault monitoring/analyzing recorder

Abstract

The invention provides a portable line fault monitoring/analyzing recorder. The portable line fault monitoring/analyzing recorder comprises a voltage type signal acquisition device, a paperless recorder, a voltage converter and a current transformer; the voltage type signal acquisition device is connected with the voltage converter, the voltage converter is connected with the paperless recorder by use of a wire, and the paperless recorder is connected with the current transformer; a signal acquired by the voltage type signal acquisition device is sent to the voltage converter and converted into a DC signal by the voltage converter, and the DC signal is sent to the paperless recorder; a current signal is detected by use of the current transformer of a split core type, and the split core type current transformer outputs a DC signal which directly goes into the paperless recorder; the paperless recorder records voltage and current signal curves. The portable line fault monitoring/analyzing recorder has the advantages of easy fault detection point connection, diversified detection ways, long voltage and current curve recording time and short curve sampling period, and further is capable of quickly realizing monitoring on a continuous-production automatic system out of order temporarily and analyzing the part out of order of a detected device by use of the curves recorded by the paperless recorder. The portable line fault monitoring/analyzing recorder is simple to operate and convenient to carry and use.

Description

technical field [0001] The invention relates to an analysis recorder in the measurement field, in particular to a [0002] A portable line fault monitoring and analysis recorder. Background technique [0003] When there is a short-term fault in the automatic control system circuit or device of continuous production, such as poor contact of the contactor (the resistance of the circuit becomes larger), the resistance of the second action of the contactor is normal, etc., without stopping the machine, the traditional Most of the line fault detection methods are to monitor the line voltage and current manually through multimeters, clamp meters, oscilloscopes, etc., and the probability of successfully detecting the fault point is extremely low. For example, by laying detection lines and connecting the detection points to the distributed control system to generate current and voltage curves, this method requires parking to connect the detection points, which is time-consuming and...

AI Technical Summary

Problems solved by technology

[0003] When there is a short-term fault in the automatic control system circuit or device of continuous production, such as poor contact of the contactor (the resistance of the circuit becomes larger), the resistance of the second action of the contactor is normal, etc., without stopping the machine, the traditional Most of the line fault detection methods are manual monitoring of line voltage and current through multimeters, clamp meters, oscilloscopes, etc., and the probability of manual successful detection of fault points is extremely low

For example, by laying detection lines and connecting the detection points to the distributed control system to generate current and voltage curves, this method requires parking to connect the detection points, which is time-consuming and laborious to operate, and the sampling period of the current and voltage generated by the distributed control system is relatively long (500 milliseconds-1 seconds), which cannot fully meet the needs of fault diagnosis

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