Sub-item metering energy consumption data collection device based on video image identification and method thereof

Abstract

The invention relates to a sub-item metering energy consumption data collection device based on video image identification. The method comprises the following steps: one camera is installed at a front end and responsible for taking in numbers of an energy consumption metering instrument or simulating images of pointer type display screens; analog video signals are encoded and converted into digital video signals via a video collector, and then the digital video signals are transmitted to an image preprocessing unit; a series of image processing and analysis are performed by the image preprocessing unit, a character segmentation unit and a character identification unit, and characters in the images are extracted; and character information is stored in a local storage unit according to the prescribed data format so as to be collected and counted by data collection gateway equipment and finally transmitted to an upper-level data center. Compared with a mode that energy consumption data automatic collection is realized by using a digital metering instrument with a data communication interface via replacement, the method is low in construction cost, low in construction difficulty and short in construction period, and has almost no influence on daily use of users so that the method is relatively suitable for occasions that the digital metering instrument cannot be replaced.

Description

[technical field] [0001] The invention belongs to the field of sub-item metering data collection of building energy consumption monitoring systems, in particular to a device and method for sub-item metering energy consumption data collection based on video image recognition. [Background technique] [0002] With the advancement of China's urbanization process and economic development, my country's building energy consumption accounts for about 30% of the total social energy consumption. The potential for energy conservation is huge, and public buildings bear the brunt of it. Therefore, building energy conservation is imperative. At present, the classified energy consumption of public buildings mainly includes water, electricity, gas, etc. It is the most ideal and efficient way to collect energy consumption data through the communication interface of digital meters. [0003] However, in the actual project implementation, it is found that most of the building's energy consumpti...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual project implementation, it is found that the energy consumption meters of most buildings do not have the function of data communication

The conventional method is to replace the existing measuring instruments, which not only increases the construction cost and construction difficulty, but also has a long construction period, which will affect the normal use of the building

Especially when it is necessary to replace the water and gas meters, it is necessary to obtain the consent of the relevant units, and various restrictions will be encountered in the actual construction

In terms of technological innovation, traditional video recognition technology can only recognize digital instrument LCD screens, but cannot recognize analog pointer screens.

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