请问大家,有么有人做混沌信号的呢?有个帐篷映射,想问一下有没有编写过它的程序,初值是什么范围呢?
2013-06-19 09:50
我们正在设计一个需要2MS/s采样率的系统,但是PSoC 5只有700 kbs/s。从数据表我可以看到它是基于一个14 MHz的时钟,但是如果你去一个更高的时钟,会发生什么?我敢肯定精度会下降,但这并不重要,在我的情况下(6 - 7位是好的)。有人能告诉我会发生什么吗? 以上来自于百度翻译 以下为原文We are designing a system needing 2Ms/s sampling rate, but the PSOC 5 only have 700kbs/s. From the datasheet i can see it is based on a 14 Mhz clock, but what happens if you go to a higher clock.? I am pretty sure the accuracy will go down, but that is not so important in my case (6-7bit is fine). Can anybody tell me what will happen?
2019-04-25 11:33
高周波机的工作原理是介质材料在高频电场的作用下发生分子极化现象,并按电场方向排列,因高频电场,以极快的速度改变方向,则介质材料,就会因介电损耗而发热。
2019-09-16 10:35
DMA向导不允许将8位SAR ADC连接到8位VDAC。它抱怨不兼容的突发大小。具体的错误是“所选的源和目的地具有不兼容的突发大小。不能选择有效的大小。附上一个包含三个相关组件的最小示例项目。这足以重现错误信息。还附加了错误消息的截图。我怀疑这是由于SAR ADC被永久地卡在16位寄存器配置中,从DMA的角度来看,即使该组件配置为8位分辨率。这意味着DMA配置假定最小的突发大小为2字节,即使1字节的突发大小应该是很好的。在SAR ADC数据表的DMA部分中,我看到了关于AcdSARARWRK0YOPTR源的注释:“接收一个2字节的结果,用于转换,结果总是具有12位分辨率。”这支持先前怀疑DMA突发大小不能缩小以匹配配置的8位RES。洗脱。DMA向导将分辨率从1到3字节缩放DeltasigMA ADC突发大小,因为分辨率从8位变为20位。DeltasigMA数据表还将这些突发大小列为依赖于分辨率的ADCJ-DESIGLDEXYSAMPYPTR的有效长度。我惊讶的是,SAR ADC不能同样地缩放突发宽度。这是一个错误,还是仅仅是SAR ADC硬件的限制?除了使用DeltasigMA ADC而不是SAR ADC之外,还有什么可行的建议吗?我怀疑有可能把DMA源地址指向ADCYSARA WRK0YRG,它包含相关的8位值。我认为一种选择是链接一对TDS,每个TD读取一个字节,其中第一个TD传递第一个字节到8位VDAC,而第二个TD只将另一个字节扔掉。我还发现这两个未解决的线程遇到相同的突发宽度问题。从SAR到VDAC的DMA为什么我无法通过DMA将数据从ADCYSAR传输到VDAC8?PNG182.8 KSalaAdcdDMAYDAC.Cyrj.CaseVo.01.Zip18.2 K 以上来自于百度翻译 以下为原文The DMA Wizard does not allow linking an 8-bit SAR ADC to an 8-bit VDAC.It complains about incompatible burst sizes. The specific error is "The selected Source and Destination have incompatible Burst sizes. No valid size can be selected". A minimal example project just containing the three relevant components added to the schematic is attached. This is enough to reproduce the error message. Also attached a screenshot of the error message. I suspect this is due to the SAR ADC being permanently stuck in a 16-bit register configuration from the DMA's perspective, even if the component is configured with 8-bit resolution. This means that the DMA configuration assumes a minimum burst size of 2 bytes, even though a burst size of 1 byte should be fine. In the DMA section of the SAR ADC datasheet, I see this comment about the ADC_SAR_WRK0_PTR source: "Receive a 2-byte result for a conversion with a result that always has 12-bit resolution." This supports the previous suspicion that the DMA burst size cannot shrink to match the configured 8-bit resolution. The DMA Wizard scales the DeltaSigma ADC burst size correctly from 1 to 3 bytes as the resolution changes from 8-bit to 20-bit. The DeltaSigma datasheet also lists these burst sizes as valid lengths of ADC_DelSig_DEC_SAMP_PTR depending on resolution. I'm just surprised that the SAR ADC cannot scale burst width similarly. Is this a bug, or just a limitation of the SAR ADC hardware?Are there any workaround suggestions besides just using the DeltaSigma ADC instead of the SAR ADC?I doubt it's possible to just point the DMA source address to ADC_SAR_WRK0_REG, which contains the relevant 8-bit value. I'm thinking one option is to chain a pair of TDs that each read one byte, where the first TD passes the first byte along to the 8-bit VDAC, and the second TD just throws the other byte away. I also found these two unresolved threads which encountered the same burst width issue.DMA from SAR to VDACWhy I am unable to transfer data from ADC_SAR to VDAC8 Via DMA? burst_size_error.png 182.8 KSAR_ADC_DMA_DAC.cyprj.Archive01.zip 18.2 K
2018-12-21 15:06
随着电子技术的飞速发展,未来战场上的各种武器系统面临着严峻的威胁,隐身技术已经被认为是提高武器系统生存能力和突防能力的有效手段。屏蔽材料的发展和应用是隐身技术发展的关键因素之一,受到世界各主要军事国家的高度重视。国外已经出现了不少兼容多频段的隐身材料专利,目前国内一些单位也分别研制了多波段伪装遮障,采用可见光、红外、雷达兼容隐身设计技术,实现了多波段隐身。尽管目前隐身屏蔽材料已在微波、红外等波段取得了很大的成果,但目前在太赫兹频段之间的研究甚少。
2019-08-05 07:32
一文了解红外热像仪的测温原理及其注意事项
2021-03-18 08:12
10000级的洁净帐篷,在其内部,我们打算建造一个探究太空的装置。这个装置是依据光学原理设计的,对粒子和除气作用十分敏感。帐篷内还有大量的电子,我想知道清洁室和静电损耗要求下应使用的最好材料是什么?答:清洁
2019-05-30 07:43
产品必须符合EMC("电磁兼容)要求,欧洲规定:销售违反电磁兼容法令(89/336/EEC)的产品将面临高额罚款,因此,商家越来越重视产品的电磁兼容性问题,为了降低成本,要根据公司需求和规模的不同,组建一个EMC实验室,本文介绍建设公司内部EMC测试设备的优点、缺点和方法。
2019-07-24 06:34
走去。 一刻钟后,他们回到了自己正在重建的家园附近,准备钻进***下发的帐篷内。 这时,一阵凉风吹来,吹得他们同时打了个寒颤。 紧接着,一栋完好的两层建筑映入了他们的眼帘,那是他们异常熟悉的,之前花费
2021-07-28 07:31