Detection system of liquid flow position and detection method thereof

Abstract

The invention discloses a detection system of liquid flow position and a detection method thereof. The detection system comprises a data collection module, a processing module, a communication module, an upper computer and a power module, wherein the data collection module comprises image collection elements and a light supplementing element for the image collection elements; two image collection elements are provided and used for collecting the reflected light signals of the liquid flow under natural light or specific-wavelength light provided by the light supplementing element so as to further judge the liquid flow position; the processing module comprises a microcontroller which is connected with the image collection elements and a memory; the communication module comprises a first communication module which is connected with the microcontroller; the upper computer comprises a host, a display device and a second communication module; and the power module is used for supplying power to the data collection module, the processing module, the communication module and the upper computer. Through the detection system of liquid flow position and the detection method thereof, the position of the falling liquid flow on a detection plane can be obtained.

Description

technical field [0001] The invention belongs to the field of sensing technology, and in particular relates to a liquid flow position detection system and a detection method thereof, in particular to a detection system and a detection method for obtaining the position of a falling liquid flow on a detection plane. Background technique [0002] Liquid flow, as a common working fluid in various fields of industry, often has fluidity, and the flow form of liquid flow is also distinguished: if the flow rate is very slow, the liquid flow will flow in layers without mixing with each other, which is laminar flow; if When the flow velocity increases and becomes faster and faster, the liquid flow begins to fluctuate. This situation is called transition flow; when the flow velocity continues to increase, the streamline cannot be clearly distinguished, and many eddies will appear. This is turbulent flow, also known as chaotic flow. flow, turbulence or turbulence. [0003] Regardless of...

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Problems solved by technology

[0003] Regardless of the flow form of the liquid flow, to clearly understand the law of its trajectory change, it is necessary to determine the position of the liquid flow, especially to obtain the position of the falling liquid flow on the detection plane, such as on many cavity parts For the processed small hole, it is necessary to judge whether the cavity part and the small hole processed are qualified. Since the part belongs to the cavity part, the traditional measurement method is difficult to apply. Two methods are often used in actual production: visual inspection method and standard rod method

The visual method is to let the liquid flow of a certain rated pressure be ejected from the small hole, and observe the position of the liquid flow with the eyes to distinguish the trajectory change. Because the resolution line of the human eye at the distance of clear vision is 0.07mm, this The measurement accuracy of the first method is low, and it can only be described qualitatively, and quantitative indicators cannot be obtained; the standard rod method is to insert a small standard rod into the small hole of the part, and simulate the axis of the liquid flow by measuring the axis of the standard rod. Due to the limitation of other factors, the measurement work is time-consuming and laborious, and the results are scattered and the accuracy is low.

[0004] At present, there is no detection system and detection method that can quantify and efficiently detect the liquid flow position to meet the demand.

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