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Precautions and troubleshooting for multi-user smart meters

Views: 信息来源:山东科大中天电子有限公司 发布时间:2019/12/1 Source of information: Shandong University of Science and Technology Zhongtian Electronics Co., Ltd.Release time: 2019/12/1

Because multi-user smart meters need to measure and store user power consumption, their data storage reliability is very important. The use of dual non-volatile memory chips, hardware write-protection interface circuit design, data backup voting, data verification, password write protection, data readback verification and other software and hardware measures to improve the reliability of data storage

Multi-user smart meters are also known as quantitative watt-hour meters and IC card meters. In addition to the ordinary watt-hour meter's metering function, in particular, users first buy electricity and then use electricity after buying electricity. If they do not use electricity, users do not continue to buy electricity , It will automatically cut off the power and stop the power supply.

Electricity is one of the indispensable resources for people's daily life. As a necessary instrument to measure its use, electricity meters have also become an indispensable measuring instrument in people's lives. The increase in electricity consumption and the change in electricity consumption methods have made electricity meters Upgrading is imminent. The advent of pre-paid energy meters has largely met the needs of current electricity metering. The following explains the relevant knowledge of pre-paid energy meters.

1. After the user's electricity card purchases electricity once, it should be strictly in accordance with one table and one card. Used in wet water meters, adopting unique patented sealing technology scheme, the sensor and the character wheel are sealed in a transparent character wheel box, which can be used in different water quality, not only to ensure that the water meter reading is clear, but also to ensure that the electronic sensor part works Long-term stability and reliability.

2. The card should be kept properly, and should not be placed with strong magnetic materials, and the surface of the chip of the card should be kept clean.

3. If the purchased power is not used up and there is a power outage, you should first check whether the outlet of the meter has voltage. If there is voltage, you should check other switches and lines. If there is no voltage at the outlet of the meter, you need to check whether it is a brake alarm. For example, when the brake alarm value is set to 10kW • h (settable), when the user ’s power remains to 10kW • h, the meter will lose power. Need to insert the card again to continue power supply.

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