Depth-of-field analysis system for a pressure-resistant tank

Abstract

The invention relates to a depth-of-field analysis system for a pressure-resistant tank, and the system comprises a vertical piano component which comprises strings, an iron skeleton, a top plate, anda soundboard, and the strings are divided into three groups: high-pitch-area strings, middle-pitch-area strings, and low-pitch-area strings, wherein the high-pitch area strings are three strings pertone, the middle-pitch area strings are two strings per tone, and the low-pitch area strings are one string per tone; the high-pitch area strings and the middle-pitch area strings are both bare strings, and the low-pitch area strings are made by winding steel wires around copper wires. The iron skeleton is of a rectangular structure, and the soundboard is composed of a resonance board, a wood aiding board, a soundboard frame and a string code. And the parameter extraction equipment is connected with the pressure-resistant tank identification equipment and is used for extracting the depth of field of the pressure-resistant tank target in the instant sharpening image and sending a distance over-close signal when the depth of field is less than or equal to a preset depth of field threshold value, otherwise, sending a distance reliable signal. According to the invention, chemical hidden dangers and explosion hidden dangers brought to piano equipment by the pressure-resistant tank are eliminated.

Description

technical field [0001] The invention relates to the field of upright pianos, in particular to a pressure tank depth analysis system. Background technique [0002] Because the grand piano takes up more space, people want to use the grand piano upright. This has just appeared early upright piano. Upright pianos are inexpensive and take up little space, making them a great purchase for hobbyists. The upright piano adopts a design scheme with interlaced strings, which effectively saves height and thickness. Previous upright pianos were up to 2.4 meters high. The current one is only 1-2 meters high. The upright piano is composed of six parts: string column, sound board, bracket, keyboard system including black and white keys and hammers, pedal mechanism including push rod, pedal and shell. [0003] The strings of the upright piano are made of steel wire, and the strings of the middle are made of steel wire; the strings of the bass are made of steel wire and copper wire. The...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the current upright piano is vulnerable to chemical threats and explosion threats brought by pressure tanks storing insecticides or aerosols nearby, the present invention provides a depth-of-field analysis system for pressure tanks. The pressure tanks of insecticides or aerosols have chemical effects and explosive effects on piano equipment. The parameter extraction equipment is used to extract the depth of field of the pressure tank target in the instant sharpened image, and the depth of field is less than or equal to the preset When the depth of field threshold is reached, a signal of too close distance is sent, otherwise, a reliable signal of distance is sent, and a buzzer alarm device is also used to perform a fixed frequency buzzer alarm operation when receiving the signal of too close distance; in a specific image During the processing, after the GAMMA adjustment process is performed on the image, the comparative analysis of the light and shade levels of the selected area is carried out on the image before and after the GAMMA adjustment process, and the contrast analysis results of the light and shade levels of the selected area are also carried out based on the images before and after the GAMMA adjustment process to determine whether Subsequent image sharpening operations need to be performed on the GAMMA-adjusted image

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