Engine instantaneous rotating speed measuring device, volatility measuring system and method

Abstract

The invention relates to an engine instantaneous rotating speed measuring device, a volatility measuring system and method. The engine instantaneous rotating speed measuring device comprises a field programmable logic gate array, a single chip microcomputer, a first interface, a second interface and an external sensor interface. The external sensor interface is connected with a crankshaft sensor in an engine and is used for acquiring a signal of the crankshaft sensor; the first interface is connected with the external sensor interface and the field programmable logic gate array and is used for transmitting a collected signal of the crankshaft sensor to the field programmable logic gate array; the field programmable logic gate array is connected with the single chip microcomputer to obtain the interrupt sampling frequency of the interrupt signal; the single chip microcomputer is connected with the second interface, and the instantaneous rotating speed of the engine is obtained through processing and output.

Description

technical field [0001] The present application relates to the technical field of engine speed measurement, in particular to an engine instantaneous speed measurement device, fluctuation rate measurement system and method. 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 fluctuates regularly, which contains a wealth of information about the working state of the d...

AI Technical Summary

Problems solved by technology

In the stable working condition of the diesel engine, the instantaneous fluctuating speed of the diesel engine will be very large, but because the change of this instantaneous fluctuating speed is measured by the angle of the crankshaft angle, the frequency of change is very fast, so even if the instantaneous speed of the diesel engine fluctuates greatly, However, the average speed of the diesel engine changes very little, so it has no direct impact on the operation of the diesel engine and is often ignored

However, this instantaneous speed fluctuation will cause greater stress on the valve train of the diesel engine, the gears and chains in the timing system, and reduce the reliability of the diesel engine.

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