Shiqiang components e-commerce table show with a new program to promote smart meter reading / meter development

Single chip microcomputer STM32L151CCU6

L0504-Murata muRata common mode inductor 90Ω 150mA

April 11-13, "China Instrument and Meter Industry Association Electrical Instrumentation Branch Branch 6th Second Directors Expansion Conference and 2017 34th China Electrical Instrumentation Industry Development Technology Seminar, Exhibition" was successfully held in Hangzhou . More than 100 companies including Roma and Shiqiang Component E-commerce participated in the exhibition.

Among them, Shiqiang Component E-commerce is the best electronic component distribution platform in the country. This time, the micro-power intelligent meter reading system program and the 698 protocol three-phase meter-specific program are strongly launched. Engineers who are not present can simply check out all the “new technologies, new components, and new solutions” in the exhibition by simply taking out their mobile phones and opening up the Shiqiang Component E-commerce App. They can easily put the content into the bag and realize all the online and offline. Interoperability.

The micro-power intelligent meter reading system solution is small and contributes to environmental protection and energy conservation.

As an important part of the National Electric Energy Forms Bureau, the intelligent meter reading system is an important factor affecting the overall situation. This time, Shiqiang Component E-commerce is divided into three units in the micro-power intelligent meter reading system: low-power operation Processing unit, high performance, low power wireless communication unit and clock unit.

In the low-power computing processing unit, Shiqiang Component E-commerce introduced the smart meter reading optimization device program, which is recommended by 16-bit ultra-low-power MCU from Renesas, the world's leading microcontroller supplier. Product R7F0C901 . As an ultra-low-power MCU, the R7F0C901 consumes only 66uA/MHz and consumes as little as 0.23uA (STOP mode, RAM reserved). Shiqiang component e-commerce adopts ultra-low power R7F0C901 in this solution, which is based on environmental protection and energy saving; on the other hand, it achieves the purpose of extending the life of smart meter reading by its low power consumption.

In the wireless communication unit, Shiqiang Component E-commerce brought Silicon Labs' Sub-GHz wireless transceiver Si4438. The wireless chip is cost-effective, with up to -124dbm receive sensitivity and +20dbm transmit power. And it is a wireless transceiver with ultra-low power consumption, its emission current is 75mA@20dbm, and the receiving current is only 3mA. The Si4438 is packaged in a QFN20 package and is only 4*4mm in size. It is the smallest in its class. In addition to the performance and power consumption advantages of the meter reading system with limited space, it is another advantage.

In the clock unit, Shiqiang component e-commerce brings Epson's RTC product, the RX-8025T. The RTC chip is one of the most commonly used modules in the field of intelligent four-meters. It has a high-speed I2C interface and a wide voltage range of 1.7V-5.5V. It supports various detection functions such as oscillation stop detection. It has a 32.768KHZ frequency output with time, calendar, interrupt and other functions. The RX-8025T has an ultra-low standby current of 480nA. It can be used for long-term use of the button battery after the system is powered down, ensuring that the clock calendar of the meter reading system is normally timed, so that the system can automatically calibrate the system time when reading the meter.

698 protocol three-phase table special program breaks through the technical barriers of multi-table copying

With the smart meter that started in 2016 gradually entering the replacement cycle, new demand for electricity meters has appeared on the market. How to break through the technical barriers of multi-table collection through the level of smart meter products, and discover and solve the core problems Hot issues today. Shiqiang Component E-commerce has brought a variety of solutions to this exhibition.

In the part of upgrading the product under the new standard agreement, Shiqiang Component E-commerce has introduced a three-phase smart meter solution based on Renesas RL78/R5F100PJMCU, which is replaced by Renesas series RL78/R5F100PL, and the storage capacity doubles. The hardware circuit can be replaced directly without changing the underlying configuration of the software. In addition, the R5F100PL can greatly reduce the CRC check time, which further reduces the data preparation time during the 485 communication process, thereby reducing the CPU load, and plays a significant role in scheduling tasks and reducing operating power consumption.

In the construction of wireless independent network, Shiqiang component e-commerce brings Silicon Labs' wireless transceiver core Si4438 and MCU, crystal and a small number of passive components to build a cost-effective Sub-GHz wireless transceiver solution. The program complies with the standards of the State Grid's self-organizing network and has been widely used in the products of many smart meter manufacturers. Its core component Si4438 has a wall penetration distance of up to 1500 meters, a receiving sensitivity of -128dBm, and an operating frequency range of 425~525MHz, which is designed based on the 470~510MHz frequency band. This frequency band is a special frequency band for wireless meter reading divided by the country. The channel is relatively clean and the interference is small, ensuring accurate and reliable data collection and management.

In the custom wireless proprietary protocol segment, Shiqiang Component E-commerce has launched SiliconLabs' multi-protocol system-on-chip (SoC) EFR32FlexGecko series, which provides flexible connectivity for devices and optimizes dedicated wireless protocols. In the low frequency range, it is convenient and fast to develop a proprietary protocol that meets the needs of its own products. In addition to providing wireless connectivity and simplifying the design of connected devices, wireless SoCs help developers design highly differentiated products that enhance the user experience and integrate multiple functions in a smaller form factor and lower power consumption. , shorten the time to market, and so on.

summary:

Shiqiang Component E-commerce, an e-commerce platform with innovative services as its core, has been helping enterprises to upgrade their products since it was launched in January 2016. It is committed to helping enterprises innovate and make full use of the Internet as a carrier to accelerate new components and technologies. The speed at which new solutions are disseminated to customers reduces the difficulty of research and development and reduces the time and cost of research and development.

In recent years, the demand for smart meters in the entire international market has shown great room for growth. Under this background, China's smart meter field has also ushered in new development opportunities. It is estimated that during the "13th Five-Year Plan" period, China will add 460 million sets of smart meters, and the overall market space will exceed 100 billion yuan. As a core platform that believes that engineers provide innovative services, Shiqiang Component E-commerce is also following the footsteps of the market. The smart meter reading and smart meter solutions will help customers achieve rapid development. Design and production.

At the same time, the relevant personnel of Shiqiang Component E-Commerce also expressed the hope that through such online and offline communication, we will continue to provide engineers with various components of technology and solutions to provide engineers with innovative sparks to help customers succeed. .