Pointer instrument automatic reading method based on key point detection

A technology of automatic reading and key points, which is used in instruments, character and pattern recognition, computer parts and other directions, can solve the problem of lack of automatic reading of instrument readings, etc., and is not easy to be affected by changes in ambient light and noise, and has good robustness. , good accuracy and robustness

Inactive Publication Date: 2020-03-24
杭州远鉴信息科技有限公司
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AI Technical Summary

Problems solved by technology

Therefore, there is a lack of a method for automatically reading meter readings with high precision and high stability in the prior art

Method used

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  • Pointer instrument automatic reading method based on key point detection
  • Pointer instrument automatic reading method based on key point detection
  • Pointer instrument automatic reading method based on key point detection

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Embodiment Construction

[0061] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0062] The specific embodiment and its implementation situation implemented according to the complete method of the present invention are as follows:

[0063] There are 3212 experimental pictures, including ten types of pointer instruments. The number of pictures in each category is distributed as shown in Table 2. Among them, 2570 pictures are used for training, and the remaining 642 pictures are used as verification set pictures.

[0064] Table 2 Number of pictures of various pointer instruments

[0065]

[0066] The server operating system used by the present invention during training is Ubuntu 16.04, and the configuration of the server includes 1 CPU model of Intel Xeon E5 2683v3, 2 GPU models of Nvidia Titan X (Pascal), and a total of 32G memory. A total of 100 epochs were iterated on 2 GPUs during training, the initial learn...

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Abstract

The invention discloses a pointer instrument automatic reading method based on key point detection. The pointer instrument automatic reading method includes the steps: collecting a front RGB image ofthe pointer instrument, and constructing a key point detection network based on an improved mask region convolutional neural network; inputting the front RGB image of the pointer instrument with knowninstrument readings and the readings thereof into a key point detection network for training, and predicting a to-be-detected object to obtain a positioning position and key points of scale lines andpointers on a dial plate; fitting an arc formed by the scale lines and a straight line where the pointer is located based on the detected key points; and finally, automatically calculating the reading of the pointer type instrument according to the relative angle between the straight line where the pointer is located and the arc formed by the scale lines. The pointer instrument automatic readingmethod can achieve the automatic reading of the pointer instrument, is good in precision and robustness, can be suitable for various types of pointer instruments, and is important in engineering valueand significance.

Description

technical field [0001] The invention relates to an automatic reading method of a pointer meter, in particular to an automatic reading method of a pointer meter based on key point detection. Background technique [0002] Due to its good practicability, high reliability and low cost advantages, pointer meters are currently widely used in power systems, petrochemicals and other traditional industries. Take the substation in the power system as an example. For safety reasons, there are many pointer instruments in the substation to monitor the temperature and air pressure of the equipment. At present, substation inspection personnel need to record the readings of various instruments every day to ensure that the equipment is in a normal operating state. This kind of work with low labor value is very time-consuming and a great waste of human resources. Recently, with the introduction of the concept of smart grid, the operation and operation and maintenance technology of substation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/62
CPCG06V10/25G06V2201/02G06F18/241G06F18/2415
Inventor 齐冬莲方翌啸闫云凤李启
Owner 杭州远鉴信息科技有限公司
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