Lam Research 716-011624-001

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Lam Research 716-011624-001

  从客户的反馈来看,我们认识到还需要对串行接口连接的使用问题进行进一步的探讨。其中的一个问题与电池有关,另一个就是通信距离。
    RF数据传输是通过被动通信模式建立起来的,这就意味着电源由阅读器或写入器提供。这样的话,串行数据传输就需要额外的电池。电池问题是有源标签中的普遍问题,我们的技术在实际应用中有时被误解为有源标签。但不管怎样,电池寿命是需要考虑的问题。
    从这一点上来看,串行接口的功能最适合于机器或仪器中的嵌入式应用,因为这些应用中总是能提供稳定的电源。但是,如果标签被牢固地安装和依附在一些可移动的资产或者物体上,电池管理就会成为问题,因为电池寿命结束时无法对电池进行更换。
    因此,根据使用环境评估电池寿命显得尤为重要,可以考虑一些充电设备,比如充电电池,或者利用一些能源发电的电池。如果在RF通信过程中能够充电,在理论上应该是不错的选择,但是却不实用,因为通信距离会受到严重破坏。
    关于通信距离,众所周知,阻抗匹配对于超高频段至关重要,因为它决定了通信性能。因此必须考虑到,匹配阻抗会因为通过串行接口连接各种LSI和器件,或者因为安装在电路板上,而受到严重影响。从上述情况来看,如果使用串行接口,与传统的RFID标签相比,天线设计可能会越来越复杂。
    未来发展
    由于RFID代表射频识别(RadioFrequencyIDentification),RFID起初被用作可由RFID阅读器读取的ID存储。富士通半导体将FRAM用在了RFID上,由于FRAM擦写速度快、耐擦写次数高而实现了大容量存储的数据载体标签。如今,内置串行接口的RFID增加了一项新功能,即时标签不在RF区域,也可通过MCU从传感器等设备上记录可追溯数据,并可在日后通过RF读取数据。
    尽管在实际应用中有些问题还需要得到解决,我们还是希望客户通过样品对这一功能进行评估,从而发现新的可能性。在与客户进行评估和探讨的过程中,我们将改进LSI的规格的问题。此外,我们有许多MCU产品可以与RFID连接,希望客户也能可以考虑采用这些产品。

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选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。