Dial image conversion method, system and equipment for pointer type measuring instrument and medium

Abstract

The invention discloses a dial image conversion method and system for a pointer type measuring instrument, and the method comprises the steps: obtaining dial images of the pointer type measuring instrument at equal time intervals, enabling every S dial images to form a group, employing the same pulse equivalent for each group of dial images to calculate the corresponding pulse number and remainder, and enabling the remainder not to be abandoned, instead, the remainder being used for calculating the pulse number corresponding to the next group of images, so that the total pulse number (the sum of all the pulse numbers) is not lost when the pointer type measuring instrument performs reading detection each time, and the reading accuracy is ensured; meanwhile, the pulse numbers corresponding to the dial images in each group being slightly different, so that the frequency change is directly reflected, namely the flow change of the pointer type measuring instrument being reflected, and a tester can more intuitively observe the flow change and the feedback capability of a measured object.

Description

technical field [0001] The invention belongs to the technical field of instrument detection, and in particular relates to a dial image conversion method, system, computer equipment and storage medium of a pointer type measuring instrument. Background technique [0002] Pointer measuring instruments determine the reading by the specific position of the pointer on the dial, that is, determine the measurement value. For example, a pointer water meter is usually composed of a circular dial and a sub-dial. The circular area formed by each red pointer and the scale circle around it is called a sub-dial. All the sub-dials are distributed on the circle centered on the center of the dial. . The automatic reading of the pointer type water meter takes the pointer as the key of interpretation. The prior art is to extract the pointer by positioning the dial and the sub-dial, and finally identify the pointer reading. The dial positioning is to extract the target area of ​​the red pointe...

AI Technical Summary

Problems solved by technology

[0004] 1. When measuring at equal time intervals, it is impossible to achieve real-time equal pulse equivalent output

The pointer rotates at a non-uniform speed. Therefore, even at the same time interval, the difference between the readings of the two images before and after will be inconsistent. The difference between each reading is used as the pulse equivalent, resulting in different pulse equivalents for each pulse transmission, which cannot be realized. Equal pulse equivalent output which is unacceptable in industrial measurement;

[0005] 2. Even if equal pulse equivalent output is realized, since the accumulated pulse number is not necessarily an integer multiple of the pulse equivalent, when the accumulated pulse number is not an integer multiple of the pulse equivalent, the remainder is usually discarded, resulting in the problem of reading error

Set the pulse equivalent to a fixed value. When there is a remainder when the accumulated pulse number to be transmitted is divided by the pulse equivalent, the remainder is usually rounded off, which will affect the reading accuracy.

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