Portable high-precision event sequence recording test instrument and test method

An event sequence recording, high-precision technology, applied in electrical testing/monitoring, etc., can solve the problems of single test method and many connection cable requirements, and achieve the effect of convenient expansion, convenient and accurate inspection, and guaranteeing absolute time accuracy.

Inactive Publication Date: 2012-04-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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Problems solved by technology

[0007] Aiming at the deficiencies of the existing technology mentioned in the above-mentioned background technology, when testing multiple modules, there are many requirements for connecting cables and the testing method is too simple, the present invention proposes a portable high-precision event sequence recording tester and testing method

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  • Portable high-precision event sequence recording test instrument and test method
  • Portable high-precision event sequence recording test instrument and test method
  • Portable high-precision event sequence recording test instrument and test method

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Embodiment Construction

[0045] The preferred embodiments will be described in detail below with reference to the accompanying drawings. It should be emphasized that the following description is exemplary only, and is not intended to limit the scope of the invention and its application.

[0046] The invention is a portable high-precision event sequence recording tester and a testing method, which are used to solve the problems of inconvenient cable connection operation when the test object is a plurality of event sequence recording modules and the distances are relatively far apart in the prior art.

[0047] figure 1 It shows the composition structure diagram of the present invention-a portable high-precision event sequence recording tester, including two parts: a host computer and a slave computer. The host mainly realizes control, display and output, and the slave realizes the signal output function. The master and the slave are connected through a network cable.

[0048] The tester outputs trigg...

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Abstract

The invention discloses a portable high-precision event sequence recording test instrument and test method, and belongs to the technical field of event sequence recording. The test method comprises the following steps of: outputting a trigger signal to each channel of an event sequence recording module by the test instrument according to a selected test mode; and determining whether the channel trigger sequence for the test instrument and real-time record of the event sequence recording module are consistent so as to detect whether the function of the event sequence recording module is accurate. The test instrument has the advantages that absolute precision for event occurrence is ensured, the clock synchronization performance of a tested system can be conveniently detected, the number of slave computers can be reasonably selected when tested objects are a plurality of the recording modules, and the slave computers can be distributed in different positions so as to facilitate cable connection.

Description

technical field [0001] The invention belongs to the technical field of event sequence recording, and in particular relates to a portable high-precision event sequence recording tester and a testing method. Background technique [0002] The event sequence recording module is used in various automatic control systems to record abnormal events. It records the event occurrence time, the first event and the interval sequence of chain occurrence events, which is the most important basis for the analysis of system failures, anomalies and accidents. With the increasing application of the event sequence recording module, after a long period of operation, there will be channel failures, omissions, misrecords, etc., which makes it difficult to determine the cause of the accident during accident analysis, and it is impossible to correctly determine the first incident point. , affecting the safe operation of the equipment. Therefore, it is necessary to verify the accuracy of the record...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 何青张志杜冬梅
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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