Diesel engine instantaneous rotational speed measurement and cylinder flameout fault diagnosis device and method

A technology of fault diagnosis device and instantaneous speed, which is applied in the direction of measuring device, linear/angular velocity measurement, velocity/acceleration/shock measurement, etc., which can solve the problem of large errors in fault diagnosis results

Active Publication Date: 2016-07-06
CHONGQING TELECOMMUNICATION INSTITUTE +1
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Problems solved by technology

[0006] In view of the above defects, the object of the present invention is to provide a device and method for measuring the instantaneous speed of a diesel engine and diagnosing a cylinder flameout fault. The method can effectively solve

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  • Diesel engine instantaneous rotational speed measurement and cylinder flameout fault diagnosis device and method
  • Diesel engine instantaneous rotational speed measurement and cylinder flameout fault diagnosis device and method
  • Diesel engine instantaneous rotational speed measurement and cylinder flameout fault diagnosis device and method

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, the present invention is described in detail:

[0050] figure 1 It is an overall structure diagram of the measuring device of the present invention, which is mainly composed of a detection unit 1 , a central processing unit 2 , a display unit 3 , an input unit 4 and an auxiliary circuit 5 . in:

[0051] Detection unit 1 is composed of electromagnetic speed sensor 1.2, Hall sensor 1.1, pulse shaping unit I1.3, pulse shaping unit II1.4, and is responsible for measuring the instantaneous speed signal and top dead center signal of the flywheel of the diesel engine.

[0052] Central processing unit 2 is composed of 16-bit dsPIC30F series single-chip microcomputer 2.2, high-speed frequency measurement unit 2.3, I / O interface 2.4, LED display interface 2.5 and communication interface 2.1, and uses uC / OS-II embedded operating system to improve the central processing The information processing capability of the unit. The communi...

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Abstract

The invention relates to the field of diesel engine fault diagnosis, and discloses a diesel engine instantaneous rotational speed measurement and cylinder flameout fault diagnosis device and method. The device mainly comprises a detection unit, a central processing unit, a display unit, an input unit and an auxiliary power supply, wherein the detection unit detects and acquires a instantaneous rotational speed signal and a top dead center signal of a diesel engine flywheel; the central processing unit calculates the instantaneous rotational speed according to the received signals, performs cylinder flameout fault diagnosis based on a PSO-BP diesel engine cylinder flameout fault recognition algorithm, determines the position of the fault cylinder, and sends the position information to the display unit, wherein the algorithm rapidity meets the utilization requirement of a test instrument based on an embedded mobile computing platform; the input unit inputs the flywheel tooth number of the diesel engine; and the auxiliary power supply supplies power to all the modules. According to the device, the rotational speed is accurately measured, and the cylinder flameout fault judgment is correct; and the device is utilized in large and medium diesel engines, tests the instantaneous rotational speed of the diesel engines on line, accurately diagnoses the diesel engine cylinder flameout faults, and can achieve digital measurement and remote monitoring management.

Description

technical field [0001] The invention relates to the field of diesel engine fault diagnosis, in particular to a diesel engine instantaneous speed measurement device and a cylinder flameout fault diagnosis method, which is a diesel engine instantaneous speed measurement and cylinder flameout fault diagnosis device. Background technique [0002] As the most commonly used power mechanical equipment, diesel engines are widely used in petroleum mines, fixed power generation, railway traction, construction machinery and other fields, as well as the power systems of military vehicles, tanks, warships, ships, etc. Once a failure occurs, it will often cause production stoppages and equipment damage Even casualties, bringing huge economic losses and social negative impact. Therefore, it is very necessary to monitor the running state of diesel engine in real time and locate faults quickly. Since the diesel engine is a reciprocating machine, the instantaneous speed of the diesel engine ...

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Application Information

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IPC IPC(8): F02B77/08G01P3/481
CPCF02B77/083G01P3/481
Inventor 曹龙汉刘小丽杨庆李建勇李锐
Owner CHONGQING TELECOMMUNICATION INSTITUTE
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