Renesas Semiconductor Single-Phase Smart Meter Solution


Electricity meters are rapidly evolving into electronics as a need to prevent theft of electricity and automatic meter reading (AMR). In recent years, with the advancement of energy conservation and environmental protection, in order to realize a smart grid that uses energy efficiently at the local level, smart meters that control various indoor devices through electric meters are expanding in various places. The electric meter is becoming a gateway for home communication, and is moving toward high performance and high functionality.

The installation of the meter from the factory to the field requires the operation of a built-in battery, and only the low power consumption of the real-time clock (RTC) operation becomes more important. In addition, in order to satisfy the infrared communication at the time of AMR and table lookup, a UART (Universal Asynchronous Receiver Transmitter) is required for communication between prepaid cards.

The R8C/Lx series in the Renesas MCU product line has a built-in 3-channel UART to meet the various communication methods required for smart meters, and low power consumption through built-in RTC. In addition, the large-capacity memory can support the high functionality of smart meters. Other built-in on-chip oscillators (OCO), watchdog timers (WDTs), LCD drive control circuits, etc. reduce the number of external components, resulting in low cost.

System Block Diagram

Smart meter

Suspended Installation Linear Light namely LED wall washer series aluminum lamp body, compact and lightweight cover and mounting bracket made of aluminum alloy die-casting high-pressure high-temperature silicone rubber seals, ensure waterproof reliability. Lamps can be a combination of single or multiple installation. Applicable to all kinds of buildings, indoor and outdoor local or contour lighting.

Lamp housings are made of aluminum drawn, sharp lines, simple structure, beautiful appearance, strong, corrosion-resistant, easy to install. Light surface electrostatic spray, high temperature resistance, good weatherability. Imported anodized aluminum reflector plate, ensuring high output light energy. 3MM thick high-strength tempered glass, high transmittance, impact resistance. Built up to ensure protection class IP65. 

Technical parameters Model: HX-XQ range of colors: red, yellow, blue, green, white and color beam angle: 15 ° -60 ° light irradiation distance: 20 m control system: DMX512 controller or wall washer simple controller case material aluminum connection standard signal power cord connector 3-pin signal connector

Electrical Specifications

Rated operating voltage: AC90-260V / 12V DC

Rated operating current (maximum): 1.8A (PC-12V) 3.6A (PC-12V) 5.4A (PC-12V)

Power consumption: 21.6W (PC-12V) 43.2W (PC-12V) 64.8W (PC-12V)

Environmental Specifications

Recommended temperature: -20 ℃ -40 ℃ Waterproof grade: IP65

Suspended Installation Linear Light

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