随着人工智慧物联网(AIoT)应用的蓬勃发展,不仅给我们的生活带来了便利,也改变了过去使用者的习惯。以“智慧家电”为例,根据资策会网购智慧家电的调查,有高达61%网友曾购买小型智慧家电,像是扫地机器人、智慧电视、智慧音箱、电扇、电子锅等都是近年智慧家电的人气商品。 有鉴于此,瑞萨(Renesas)电子作为全球领先的半导体解决方案供应商,在这波浪潮中也推出许多的解决方案作为产品的开发。如今随著语音辨识的高度应用成长,瑞萨(Renesas)电子携手赛微科技(Cyberon Corp.)推出新一系列的语音控制应用方案,即使在没有联网的环境下,依旧能享受智慧家庭的乐趣。在此次的开发中,分别采用两款MCU作为应用的选择:一款是RA系列的RA6M1,另一款是Synergy系列的S5D5。 采用瑞萨(Renesas)电子MCU - RA系列的RA6M1/Synergy系列的S5D5,搭配流量计感测器(FS1023)的智能饮水机语音控制技术,透过I2S界面接收DMIC麦克风音讯,并经由算法来撷取相对应的指令动作,当启动饮水机进行给水的过程,流量计感测器(FS1023)透过A/D界面回传流量值给主控制芯片,举例: 当下达语音指令 -“我要100CC水”,执行饮水机给水动作,经计算水量到达100CC即停止出水。此两款的MCU所搭载的语音辨识的算法是由赛微科技(Cyberon Corp.)所提供,其特色包括: 1.低功耗,高安全性和灵活的软件包(RA-FSP/Synergy-SSP)。 2.本地语音识别算法。无需网络连接,无需进行网络延迟即可执行实时控制。 3.全球语言支持:现在全球范围内多达34种语言支持。 4.语音识别算法所需的硬体资源较少: CPU运行于CM4@60DMIPS,ROM:?256KB闪存,?50KB SRAM。 这取决于有多少命令支持。 5.高精度:?98%(每200个命令)。 6.每个命令所需要的硬体资源如下表: 7. 语音辨识表现的状况: 核心技术优势 全球语言支持多达34种,且所需的硬体资源较精简  赛微科技的语音辨识引擎,提供了优异的抗干扰性  瑞萨所提供的FSP(Flexible Software Package) 和 Synergy Software Package(SSP) 快速的实现语音控制应用 方案规格RA6M1 MCU 规格:  处理器:120MHz Arm:registered: Cortex:registered:-M4F, 512KB Flash ROM, 256KB SRAM  工作温度:-40℃ 至 + 105℃  支援界面:UART界面、PMOD 界面  烧录方式:J-Link SWD 界面  开发环境:Renesas e2studio with FSP (请参阅博文: Renesas RA e2studio 与 FSP 下载安装及程序编译) Synergy S5D5 MCU 规格:  处理器:120MHz Arm:registered: Cortex:registered:-M4, 512KB Flash ROM, 384KB SRAM  工作温度:-40℃ 至 + 105℃  支援界面:UART界面、PMOD 界面  烧录方式:J-Link SWD 界面  开发环境:Renesas e2studio with SSP 方案来源于大大通。
2021-11-30 15:59:17 4.99MB 语音控制 智能饮水机 RA6M1 电路方案
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进度控制方案资料.pdf
2021-11-02 15:05:37 23KB
与公有链不同,联盟区块链超级账本Fabric额外集成了成员管理服务机制,能够提供基于通道层面的数据隔离保护。但这种数据隔离保护机制在通道内同步的仍是明文数据,因此存在一定程度的数据泄露风险。另外,基于通道的数据访问控制在一些细粒度隐私保护场景下也不适用。为了解决上述提及的联盟链超级账本中存在的数据隐私安全问题,提出了一种基于CP-ABE算法的区块链数据访问控制方案。结合超级账本中原有的Fabric-CA模块,提出的方案在实现用户级细粒度安全访问控制区块链数据的同时,还能够实现对CP-ABE方案中用户属性密钥的安全分发。对该方案进行的安全分析表明,该方案实现了ABE用户属性私钥安全分发和数据隐私性保护的安全性目标,性能分析部分也说明了所提方案具有良好的可用性。
2021-09-27 14:13:02 1.56MB 区块链 超级账本 CP-ABE 数据访问控制
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BRT-交通信号优先控制方案.pdf
2021-09-18 19:03:13 289KB 交通 V2X
很好的FOC介绍文档,在结合英飞凌单片的平台,具有很强的实践意义(XC886/888 CM/CLM 8-Bit Flash Microcontroller Sensorless Field Oriented Control for PMSM Motors.pdf)
2021-09-09 00:38:25 1.4MB FOC
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840Dsl_应用_力矩电机驱动的旋转工作台刹车装置控制方案
2021-09-08 09:03:21 4.98MB
一种新能源汽车热管理控制方案与开发策略.pdf
2021-08-31 09:08:40 1.25MB 新能源 能源时代 能源信息 参考文献
凌阳公司的文档,介绍直流无刷电机控制原理,清晰,非常有参考价值,看完之后对直流无刷电机的驱动控制原理应该基本清楚
2021-08-30 15:08:51 727KB 直流无刷电机 控制 原理
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Abstract ——This article deals with a phase-locked loop (PLL)- based novel control for wind turbine driven doubly fed induction generator interfaced to utility grid with a battery energy storage (BES) connected at the dc link. The control of grid-side converter (GSC) is modified to export/import constant power to/from the grid. The state of charge of BES helps in deciding the reference export power to the grid apart from the manual selection using averaged wind power in a particular period of time. An off maximum power point tracking logic is incorporated in the rotor-side converter (RSC) control to operate the BES within its constraints and, moreover, to feed constant power to the grid. In addition, the energy management scheme of the system is presented in the form of flowchart for both exporting and importing power to/from the grid. The RSC and GSC have taken care of unity power factor operation at stator terminals and to mitigate harmonics and grid currents balancing, respectively. The system performance is found robust as the PLL response is not affected even under grid voltages with dc offset. The system is modeled and simulations are carried out in MATLAB using SimPowerSystems tool box. Moreover, the control scheme performance is compared with conventional control algorithms both in terms of PLL and converter controls. To validate the effectiveness of the control scheme, a prototype of the system is developed. Test results demonstrate the satisfactory performance of the system under various operating conditions.
2021-08-26 14:08:25 7.26MB 双馈风机 并网
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Abstract——Injection of the wind power into an electric grid affects the power quality. The performance of the wind turbine and thereby power quality are determined on the basis of measurements and the norms followed according to the guideline specified in International Electro-technical Commission standard, IEC-61400. The influence of the wind turbine in the grid system concerning the power quality measurements are-the active power, reactive power, variation of voltage, flicker, harmonics, and electrical behavior of switching operation and these are measured according to national/international guidelines. The paper study demonstrates the power quality problem due to installation of wind turbine with the grid. In this proposed scheme STATic COMpensator (STATCOM) is connected at a point of common coupling with a battery energy storage system (BESS) to mitigate the power quality issues. The battery energy storage is integrated to sustain the real power source under fluctuating wind power. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement is simulated using MATLAB/SIMULINK in power system block set. The effectiveness of the proposed scheme relives the main supply source from the reactive power demand of the load and the induction generator. The development of the grid co-ordination rule and the scheme for improvement in power quality norms as per IEC-standard on the grid has been presented.
2021-08-25 17:05:35 770KB 电能质量 风能 STATCOM
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