Device for detecting engine condition based on pure vibration signal and method thereof

A vibration signal and state detection technology, applied in the direction of internal combustion engine testing, etc., can solve the problems of inability to evaluate the overall performance of the engine, inability to analyze non-ferromagnetic abrasive particles, and low degree of automation, so as to achieve historical data playback, real-time monitoring of vibration state, The effect of low equipment cost

Inactive Publication Date: 2009-05-27
ZHEJIANG UNIV
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Problems solved by technology

Its disadvantages are: large random error and low repeatability accuracy; observation and analysis rely on subjective experience: cumbersome spectrum making procedures and low degree of automation; non-ferromagnetic abrasive particles cannot be analyzed; it is only suitable for fault diagnosis of lubricating oil-lubricated moving parts, Difficult for grease-lubricated moving parts
As a single test, the detection range is extremely limited, and it cannot make a good evaluation of the overall performance of the engine.

Method used

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  • Device for detecting engine condition based on pure vibration signal and method thereof
  • Device for detecting engine condition based on pure vibration signal and method thereof

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Embodiment Construction

[0042] In conjunction with the accompanying drawings, the present invention will be described in detail below through specific implementation examples.

[0043] 1. A pure vibration signal-based engine state detection device provided in this specific embodiment includes sensors, data acquisition equipment, hand-held state detection equipment and servers, and the hand-held state detection equipment and data acquisition equipment are integrated into a hand-held patrol engine. The inspection instrument; the hand-held inspection instrument is a palmtop computer that has used real-time monitoring software; the server is a PC that utilizes data management software for data management. The system process is attached figure 1 .

[0044] 1. The hardware composition of the hand-held inspection instrument:

[0045] The data acquisition device is a data acquisition card based on a 16-bit MCU (MSP430), which is connected with an ICP acceleration sensor and is used to collect and preproces...

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Abstract

The present invention relating to the field of engine provides an engine state detecting device and method based on the pure vibration signals. The device includes a sensor, a data collecting device, a portable state detecting device and a server; the portable state detecting device and the data collecting device are integrated into a portable inspecting instrument; the sensor is connected with said portable inspecting instrument; the portable inspecting instrument is connected with the server. The method includes the steps of: (1) classifying according to the type of the engine and collecting the vibration signals to form a repository; (2) monitoring the running state of the engine to be tested; (3) analyzing the history data storied in the server to form an experience bank; (4) detecting the engine and judging the running state of the engine. The device in the present invention has a low cost, a convenient installation, a convenient assembling and disassembling and the device is easy to spread; the present invention provide a plurality of methods for diagnosing the fault and has a high success rate of diagnosing.

Description

technical field [0001] The invention relates to the field of engines, and more specifically relates to an engine state detection device and method based on pure vibration signals. Background technique [0002] With the intensification of market competition, people have higher and higher requirements for engine performance, and the harsh working conditions of the engine make it impossible for traditional monitoring technology to better predict and judge the operating status of the engine. According to the traditional diagnosis experience, the abnormal operation of the engine is mainly due to the decrease of sealing performance caused by wear and tear, in addition to improper adjustment factors. Many companies at home and abroad have researched and developed a variety of detection and diagnosis technologies for the state of engine components in order to solve the problem of engine running state detection. [0003] Ferrography diagnostic technology can find the early fatigue f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/12
Inventor 李培玉郑俊谭大鹏陈尚俭
Owner ZHEJIANG UNIV
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