Method and device for detecting oil level of oil tank

Abstract

The invention discloses an oil level detection device for an oil tank. A plurality of light beam emitters and a photosensitive element are arranged on the inner surface of the top wall of the oil tank; the plurality of light beam emitters are distributed in an annular array, and the photosensitive element is arranged at the central position of the annular array formed by the plurality of light beam emitters; light beams emitted by the light beam emitters have fixed deflection angles with the normal direction of the bottom wall of the oil tank; light beams emitted by the plurality of light beam emitters are refracted by oil liquid to form a plurality of light spots on the bottom wall of the oil tank; the photosensitive element is used for capturing the light spot and transmitting the position information of the light spot to the vehicle processor. The oil tank oil level detection method adopts the oil tank oil level detection device and comprises the following steps that light beams emitted by the light beam emitter pass through oil to form refracted light beams, and a plurality of light spots are formed on the bottom wall of the oil tank; capturing a light spot by using a photosensitive element, and transmitting the position information of the light spot to a vehicle processor; and according to the position information of the light spots, the oil depth and the oil mass ratio are calculated.

Description

technical field [0001] The invention relates to the technical field of liquid level measurement, in particular to a method and device for detecting the oil level of a fuel tank. Background technique [0002] In various fields where oil tanks are used, especially in the field of machinery, the most important method for measuring the oil level of the oil tank at present is to measure the oil level by changing the resistance. This measurement method needs to insert the oil level sensor directly into the oil. Therefore, when designing the oil tank, it is necessary to select the appropriate sensor or customize it. When purchasing the oil level sensor for maintenance, it must be purchased in strict accordance with the specifications, which makes the generality of the oil level sensor poor. It is not easy to buy in actual use, and the damage rate of this sensor is very high. Currently there are other fuel level sensors, such as ultrasonic sensors, which have low accuracy and high ...

AI Technical Summary

Problems solved by technology

However, this method of detecting the oil level has two obvious disadvantages: firstly, the measurement accuracy is low. When the oil tank is in a tilted state, the oil liquid level is always in a horizontal state. At this time, the oil liquid is also inclined relative to the oil tank. According to this The measurement results of the patent are wrong results; in addition, a large number of photosensitive devices are arranged at the bottom of the fuel tank, which is costly, low in reliability, and poor in practicability

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