| Ningbo Jiangbei Dongfang Water Meter Instrument Factory |
Mobile: (0) 13905746717
Address: Zone C, Jiangbei Investment and Entrepreneurship Center, Ningbo
| Detailed introduction of automatic water meter verification device! |
| Publisher: Website release time: 2013-9-27 Read: Times |
I. Product Introduction The SW2000 camera-type automatic water meter verification device is in accordance with the requirements of "JJG162-2009 Water Meter Verification Regulations". Under the Windows operating platform, a combination of computer and single-chip technology is used to realize automatic verification of water meter detection. After installing the water meter, you only need to enter the verification information on the computer, and no manual intervention is required. Click the "Start Verification" icon, and the device automatically completes the verification of the nominal, demarcation, and minimum flow in order. It reduces the labor intensity of the verification personnel, improves the verification efficiency and accuracy, and is easy to operate, which is very suitable for the current water meter verification units. Second, the structure principle This device includes a water meter verification table, automatic identification control system, verification software, computer and printer. As shown in the figure below, a camera is installed above each water meter to be tested, and the output video signal is directly input to the high-speed computer's image acquisition card. The computer software completes the processing of the water meter disk image and identifies the flow meter of the water meter being checked. The control box completes the collection of the water level signals of various standard containers such as 10L / 100L, and controls the opening and closing of multiple solenoid valves. During the verification, two water level signals are monitored in real time, water level measurement is performed after the water is stopped, and data is sent to the computer. After the computer collects the water meter dial image, it uses image technology to identify the flow rate of each water meter being tested, and combines the data measured by the control box to the standard container, and finally calculates the water meter verification report, thereby realizing the entire process of water meter verification.
Third, performance characteristics 1. Intuitive and reliable This device uses a camera instead of human eyes to read the water meter pointer on the basis of China's most commonly used "volume method verification", which fully meets the requirements of water meter readings such as the national metrological verification regulations JJG162-2009, The automatic recognition accuracy reaches 1/3 of the minimum score of the water meter, and the automatic recognition rate is more than 90%; it is the most automated water meter verification scheme, and the market share is the first in the country. 2. Advanced science integrates electronics, imaging and mechanical technology. Simple operation, easy to use and maintain. 3. Accurate and reliable use of photoelectric induction signals, sensitive to changes in water level, generating stable water level pulse signals, excellent anti-interference. The computer adopts a variety of fast mathematical algorithms to ensure the real-time and reliability of image recognition, eliminate human error, and improve the accuracy of the device. 4. Artificial intelligence The verification device realizes the automatic reading of the water meter and the standard container flow, automatically switches the flow, and automatically calculates the error after the verification is completed and forms a print report. The entire verification process is automatically completed, and the work of the inspector Simplified. 5. Data management function The computer verification software provided by the strong verification device automatically calculates and draws the verification conclusions according to the regulations. It can save all the water meter verification data and has a complete database function such as verification record query, statistics, and printing. 4. Technical parameters 1. Detection range: 15-25mm, 15-50mm, 40-100mm, 200mm, 300mm and other caliber dry and wet water meters 2. Number of test water meters: 1-16 3. Calibration table accuracy: excellent At 0.2 level 4. Image recognition rate ≥90% 5. Image recognition error: 0.33 division 6. Water level measurement error: ± 0.004% 7. Detection input: 1-16 video signals; 2-4 water level sensing signals; 2 -4 channels of water level measurement signal 8. Control output: 4-10 channels of high-power relay output 9. Data processing: Automatically calculate according to the regulations and draw the conclusion of the verification, can save all water meter verification data, and have verification record query, statistics, printing, etc. Database functions. 10. Area of the testing device: (4300 × 1800 × 2600) mm (small caliber)