Automatic Meter Reading Mode Analysis Of Camera Water Meter Check Bench

The new model of the camera water meter can increase the water meter verification efficiency and reduce the difficulty of operation. Accurate reading accurately reads the measured water table is Video water meter check benchThe basic requirements of the test water meter are core technologies that affect the accuracy of the water meter.

The current water meter is mainly divided into mechanical reading and electronic reading. The mechanical reading is that the pointer and the rim showing the water meter current water is the mainstream display method; the electronic reading generally uses the liquid crystal screen to display the current amount of current, more other information can be displayed under the control of the smart water meter. It is generally m bus, RS-485 or infrared program, which is determined by its different communication protocols. Of course, there are also two reading modes. The camera water meter check bench has a long history, and the market share is high. However, with the development of technology and the promotion of new demand, the electronic meter reading represented by the remote water meter is gradually recognized by the market. Therefore, the set mechanical reading and an electronic reading are integrated in the integral of the imaging water meter check bench.

Video water meter check benchAutomatic meter reading mainly has photoelectric identification meter reading, laser sampling meter reading and high speed camera meter reading. Among them, the water meter digital indicator adopts photoencentry meter reading, laser sampling meter reading and high speed camera meter reading with plum refer to start. Here is a simple comparative analysis of these three methods.

The camera identification meter reading is a static photo of the initial calibration of the schedule by the camera, compares the read computer software, and obtains the change of the measured water table, and calculates the verification results.

The advantage of a photographic identification scheme is that it approaches a manual reading method. The dial-up photo in the initial state can be archived to perform the second manual species. In view of the limitations of the program technology, there are some shortcomings in this program. First, the quality of the photos taken is easy to interfere with the environment. For example, the brightness will affect the reading effect of the photo. The water droplets on the dial can even make the photos of the photographed cannot be used for computer recognition; second, only the static dial can only be used to limit the verification method, which is not easy to improve the verification efficiency. Due to the water hammer effect, the application range is limited to small diameter water meter; third, recognition rate. The computer's determination or droplet recognition of the pointer edge position may result in reading data abnormality, affect the verification result; fourth, is the location estimate. Software cannot accurately estimate the relative position of the dial pointer, which will cause some interference in small flow verification.

Video water meter check benchApplication is limited by the identification rate and verification method, requiring manual intervention. If the data is abnormal, you need to manually compare a lot of data. The verification method can only use the start-stop mode and the verification efficiency is low. Suitable for small diameters, small quantities, not applicable to the verification of large continuous water meters.

The laser sampling sheet is sampled to sample the laminated plum, accumulating the amount of change, resulting in the amount of change in the water meter; laser sampling is a dynamic, continuous process, can be verified by sampling.