Image identification method and device for mechanical instrument window display figure

Abstract

The invention relates to amethod and device for identifying the digital image displayed in the mechanical instrument window, suitale for the identification of figure for various mechanical instrument window. The method, based on the working principle of absolute encoder in the field of industrial sensor, applys the mechanical location identifying method to the field of identifying image, carry out the identification for the position of image to reach the identification for the content of image, and especially is suitale for the application in which the one-chip microcomputer is as a processor, with high efficiency, accurate identification and good versatilityin. The device adopts the one-chip microcomputer as processor and is an integer of collecting, processing, identifying and transmitting image, and characterized in that the device comprises an image collection module, one-chip microcomputer processing and identifying module, a communication interface, a power module and transparent sealing structure. The device, having low cost, high efficiency and little volume, can be installed above the various mechanical instrument window with other structure, accordingly the identification of figure displayed in the instrument window can be carried out, as well as the date and the image are transmitted at the same time.

Description

technical field [0001] The invention relates to an image recognition method for numbers displayed on a window of a mechanical instrument, which realizes the identification of numbers in the window through image position recognition technology for various mechanical instrument display windows, and is suitable for using a single-chip microcomputer as the whole process of image acquisition, processing and identification processor applications. [0002] The invention also relates to an image recognition device for displaying numbers on a window of a mechanical instrument, which includes a CMOS image sensor, a lens, an auxiliary light source, a single-chip microcomputer, an image position recognition software module, a communication interface, a power supply module and a transparent sealing device, and can be widely used in Recognition of numbers displayed on windows of ordinary water meters, gas meters and other industrial instruments with word wheel counters as data recording dev...

AI Technical Summary

Problems solved by technology

[0006] Regardless of the transmission of video signals or compressed image digital signals, the amount of data is large, and it cannot be popularized and used in the current applied industries.

Taking a 100,000-pixel camera as an example, the amount of data after imaging is about 200KB. Using video transmission, the transmission speed can be guaranteed, but for video relay equipment, its technical complexity and difficulty in practical application are huge

Generally, video relay equipment can connect no more than 30 camera units, which requires laying video cables and power cables from each camera unit to the relay equipment, and its material and engineering costs have far exceeded the cost of the camera acquisition unit itself. Coupled with the use and maintenance costs of lines and relay equipment, the cost of this solution has greatly exceeded the actual affordability of the industry

Although another type of product uses bus communication such as RS485, but because the image data is too large, the bus transmission rate is low, and the transmission time is too long. Bottleneck, and the centralized processing of a large number of images also increases the cost of the upper computer, so it cannot meet the requirements of practical applications

[0007] 2. Image data interface problem

Products that only transmit image information cannot meet their requirements

[0009] 3. Image data storage problem

This method is obviously not suitable for applications requiring recognition speed, running time and low power consumption.

Images