NXP燃气表和水表解决方案

Release time:2017-04-15
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source:Ameya360
reading:177

1、前言

   流量计是用于测量某个特定时间或一段时间的天然气用量或自来水用量的装置。测量值将通过低功耗段式LCD显示。该LCD通常由MCU上的段式LCD驱动器驱动.先进的流量计整合了射频通信接口,用于连接单向或双向射频计量表读数系统。

2、方案概述

   (1)流量计 流量计是用于测量某个特定时间或一段时间的天然气用量或自来水用量的装置。测量值将通过低功耗段式LCD显示。该LCD通常由MCU上的段式LCD驱动器驱动。 先进的流量计整合了射频通信接口,用于连接单向或双向射频计量表读数系统。计量表的最新发展趋势是采用先进的加速度传感器来检测细微的运动和记录篡改事件

  (2)重要设计参数

系统中器件的成本

系统中器件在恶劣室外环境下的可靠性

系统的电池使用时间超过10年

防篡改安全机制

通信接口要求

能够在现场扩展和更新系统



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NXP will ship this year as many as five SoCs made in Samsung’s 28nm fully depleted silicon-on-insulator (FD-SOI) process, including one that has been sampling for six months. Samsung is expected to announce its FD-SOI roadmap in May and is already working on RF and in-house embedded MRAM for it. An NXP executive showed the first samples of the products at an event here, a key milestone in a long journey for FD-SOI. The next big step is finding an embedded non-volatile memory for the process, given embedded flash is expected to hit limits at 14nm. A Globalfoundries executive declined to say when it expects to ship the first commercial chip in its 22nm FD-SOI or how many tapeouts it has completed in the process. The company announced its first FD-SOI tapeout last year and said it now has 70 customer engagements. “Our FD-SOI business is small right now, but it will be mainstream,” said Ryan Lee, a vice president of foundry marketing for Samsung. One chip designer at the event said his company has been interested in FD-SOI for a long time. It made a test chip at STMicroelectronics but chose to work on commercial designs with Samsung because Globalfoundries was not ready until Sanjay Jha became the foundry’s CEO, after the fabless company made its decision. NXP's Geoff Lees shows samples of his FD-SOI i.MX chips. (Image: EE Times) NXP described four 64-bit ARMv8 and one 32-bit ARMv7 embedded SoCs under its i.MX brand, three now in production in Samsung’s FD-SOI process. Over the next two years, the family will cover a performance range that scales by a factor of 25, five times more than its planar-based i.MX chips, each design optimized for different performance and power characteristics. “I don’t think that would be possible without 28nm FD-SOI,” said Geoff Lees, general manager of NXP’s microcontroller group. A high-end automotive SoC will run up to eight 1080-progressive displays and run without a fan. “It’s operating in conditions that would kill a cellphone,” with three orders of magnitude better reliability, Lees said. An i.MX 7ULP announced in March includes independent application and real-time domains. It targets a wide range of markets from home automation to wearables. Long term, Lees said FD-SOI promises better ADCs and lower power radios. For example, he expects single-antenna 802.11n Wi-Fi on the power budget of Zigbee and other 802.15.4 protocols and an ability to take “Bluetooth Low Energy to new record power levels, opening up new apps at new cost points.”
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