Low engine oil level automatic alarming method

Abstract

The invention discloses a low engine oil level automatic alarming method. The method comprises a photoelectric liquid level sensor, a A / D converter, a single chip microcomputer, a display, a buzzer, asignal amplifier and a relay. According to the method, the photoelectric liquid level sensor is adopted, the contact type point engine oil level measuring and controlling is realized by utilizing theprinciple that light is reflected and refracted on two different medium interfaces, the photoelectric liquid level sensor is unrelated with other characteristics of the medium include temperature, pressure, density and electrical parameters, so that the liquid level detecting is accurate, the repeated precision is high, the response speed is high, and the liquid level control is very accurate, all components inside the photoelectric liquid level sensor are subjected to resin pouring and sealing treatment, and no mechanical movable part is arranged in the sensor, so that the reliability of thesensor is high, the service life is long, maintenance is avoided, and the sensor can be directly installed to use without debugging and checking; due to the fact that the size of the photoelectric probe is small, a plurality of photoelectric probes are installed on one measuring body to manufacture a multi-point liquid level sensor, and intelligent monitoring is realized.

Description

technical field [0001] The invention relates to the technical field of automobile engine oil level monitoring, in particular to an automatic alarm method for low engine oil level. Background technique [0002] Engine oil, that is, engine lubricating oil, can lubricate and reduce friction for the engine, assist cooling and cooling, seal and prevent leakage, prevent rust and corrosion, shock absorption and buffering, etc. It is known as the "blood" of the car. When the oil level drops to a certain To a certain extent, the oil pressure in the main oil channel of the engine lubrication system will be lower than the normal range, which will destroy the lubrication conditions of the engine, cause poor lubrication, cooling and cleaning, and cause wear of parts. Therefore, it is necessary to detect the oil level of the car to To prevent engine accidents, the earliest automobile oil level detection was realized through the oil lever, which required manual control, which was troubleso...

AI Technical Summary

Problems solved by technology

[0002] Engine oil, that is, engine lubricating oil, can lubricate and reduce friction for the engine, assist cooling and cooling, seal and prevent leakage, prevent rust and corrosion, shock absorption and buffering, etc. It is known as the "blood" of the car. When the oil level drops to a certain To a certain extent, the oil pressure in the main oil channel of the engine lubrication system will be lower than the normal range, which will destroy the lubrication conditions of the engine, cause poor lubrication, cooling and cleaning, and cause wear of parts. Therefore, it is necessary to detect the oil level of the car to To prevent engine accidents, the earliest automobile oil level detection was realized through the oil lever, which required manual control, which was troublesome and not very controllable. With the progress of society and the development of science, the sensor technology gradually matured and was widely used. Applications and many fields, including the technical field of engine oil level detection, therefore, it is particularly important to provide a sensor-based low engine oil level alarm method

[0003] Most of the existing low oil level alarm methods use mechanical sensors to detect the oil level. The structure of the mechanical sensor is relatively complicated, the installation is inconvenient, and the positioning accuracy is poor. It needs to be debugged, and it has been in contact with the oil for a long time. Poor corrosion resistance and short service life. The existing low oil level alarm method can only detect the low level of the oil. When the oil is in a low state, it will alarm and cannot monitor various positions of the oil level. The functionality is poor , the existing low oil level alarm method can not control the car circuit, when the oil level is in a very low state, if the engine is forced to start, it will cause parts wear and damage to the engine

Images