Low-power consumption single-phase intelligent power meter
A smart electric energy meter and low power consumption technology, applied in the direction of measuring electric variables, measuring devices, instruments, etc., can solve problems such as battery undervoltage, achieve low power consumption, good economic and social benefits, and reduce standby power consumption
Inactive Publication Date: 2015-07-01
TANGSHAN UNIS INTELLIGENT ELECTRONICS
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Problems solved by technology
[0004] In order to solve the above technical problems, the present invention provides a low-power single-phase smart energy meter, which uses a variety of low-power processing methods to reduce the power consumption of the energy meter itself and the power consumption in the battery-powered state, and solve the problem of battery undervoltage. question
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Additionally, the protection scope of the present invention should not be limited only to the following specific structures or components or specific parameters.
[0017] The electric energy meter of the present invention uses a magnetic coupler, which is a digital isolator, can replace the optocoupler, and is superior to the optocoupler in terms of speed, power consumption, performance and the like. Unlike optocouplers, magnetic couplers are based...
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The invention provides a low-power consumption single-phase intelligent power meter. The low-power consumption single-phase intelligent power meter comprises a power circuit, a voltage sampling circuit, a current sampling circuit, a measuring chip circuit, a storage circuit, a control circuit, a liquid crystal display unit, an infrared communication module, a 485 communication module, a carrier communication module, an ESAM (embedded secure access module) and a microprocessor; a storage chip and a magneto-couple isolation chip ADUM1241 are utilized in the low-power consumption single-phase intelligent power meter, the maximum power consumption of the magneto-couple chip is 84 mW, the maximum power consumption of an optocoupler is 200 mW, so that power can be saved by around 60%. The low-power consumption single-phase intelligent power meter can reduce the dead power consumption as well as the power consumption when powered by batteries, thereby solving the problem of under-voltage of the batteries.
Description
technical field [0001] The invention belongs to the field of electromagnetic measurement, and in particular relates to an intelligent electric energy meter, especially an electric energy meter with low power consumption and high stability. Background technique [0002] Smart energy meters have more and more strict requirements on power consumption. On the one hand, the power consumption of the energy meter itself must be controlled during normal measurement. On the other hand, when the power is cut off, the energy meter must ensure the power consumption of the real-time clock and the power consumption of the liquid crystal display. . At present, the product is not perfect in terms of low power consumption technology, and the phenomenon of battery undervoltage is common. [0003] For example, a network type electric energy meter disclosed in the Chinese patent application No. 200510032688 is used to collect the information of scattered user electric energy meters in the area...
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IPC IPC(8): G01R11/00
Inventor 李银龙马华李双李宝英
Owner TANGSHAN UNIS INTELLIGENT ELECTRONICS