公开(公告)号：US20150323957A1

公开(公告)日：2015-11-12

申请号：US14652256

申请日：2013-12-06

Applicant: ENDRESS+HAUSER GMBH+CO. KG

Inventor： Kaj Uppenkamp ,  Walter Rombach ,  Franco Ferraro ,  Armin Wernet

IPC: G06F1/08

CPC classification number: G06F1/08 ,  G01D18/008 ,  G01D21/00 ,  H03L1/026 ,  H03L7/099

Abstract: A method for stabilizing the clock frequency of a microcontroller associated with a field device of automation technology. The field device as a function of application is exposed to different process conditions, wherein the clock frequency of the microcontroller is ascertained at at least two different temperature values, and/or at at least two different voltage values. Based on the ascertained values, the dependence of the clock frequency of the microcontroller on temperature over a predetermined temperature- and/or frequency range and/or the dependence of the clock frequency of the microcontroller on voltage over a predetermined voltage- and/or frequency range is ascertained. The ascertained values are stored, and the influence of temperature and/or voltage on the clock frequency of the microcontroller is at least approximately compensated taking into considerating the ascertained temperature dependence and/or the ascertained voltage dependence.

Abstract translation: 一种用于稳定与自动化技术的现场设备相关联的微控制器的时钟频率的方法。 作为应用的函数的现场设备暴露于不同的工艺条件，其中微控制器的时钟频率在至少两个不同的温度值和/或至少两个不同的电压值下确定。 基于确定的值，微控制器的时钟频率对于预定温度和/或频率范围内的温度的依赖性和/或微控制器的时钟频率对预定电压和/或频率上的电压的依赖性 确定范围。 存储确定的值，并且考虑到确定的温度依赖性和/或确定的电压依赖性，至少大约补偿温度和/或电压对微控制器的时钟频率的影响。

公开(公告)号：US20150312020A1

公开(公告)日：2015-10-29

申请号：US14649258

申请日：2013-11-27

Applicant: ENDRESS+HAUSER GMBH+CO. KG

Inventor： Walter Rombach ,  Franco Ferraro ,  Armin Wernet ,  Kaj Uppenkamp

IPC: H04L7/00

CPC classification number: H04L7/0008 ,  H01F2019/085

Abstract: An apparatus for synchronizing the clock frequencies of a first electronics unit arranged on the primary side, and a second electronics unit arranged on the secondary side. Associated with the first electronics unit is a clock signal producer, which produces a clock signal having a reference clock frequency, wherein a transmission unit is provided between the first electronics unit and the second electronics unit. A first control unit is provided, which operates the transmission unit with a clock frequency, which amounts to a fraction of the reference clock frequency of the first electronics unit, wherein a second control unit is provided, which couples the clock frequency out to the secondary side and, based on the out-coupled clock frequency, produces for the second electronics unit a clock frequency, which is synchronous with the reference clock frequency of the first electronics unit.

Abstract translation: 一种用于同步布置在初级侧的第一电子单元的时钟频率的装置和布置在次级侧的第二电子单元。 与第一电子单元相关联的是时钟信号生成器，其产生具有参考时钟频率的时钟信号，其中传输单元设置在第一电子单元和第二电子单元之间。 提供了第一控制单元，其以时钟频率操作传输单元，该时钟频率等于第一电子单元的参考时钟频率的一小部分，其中提供第二控制单元，其将时钟频率耦合到次级 并且基于输出耦合时钟频率，为第二电子单元产生与第一电子单元的参考时钟频率同步的时钟频率。

公开(公告)号：US10228717B2

公开(公告)日：2019-03-12

申请号：US14652256

申请日：2013-12-06

Applicant: Endress + Hauser GmbH + Co. KG

Inventor： Kaj Uppenkamp ,  Walter Rombach ,  Franco Ferraro ,  Armin Wernet

IPC: G06F9/00 ,  G06F1/08 ,  G01D21/00 ,  H03L1/02 ,  H03L7/099 ,  G01D18/00

Abstract: A method for stabilizing the clock frequency of a microcontroller associated with a field device of automation technology. The field device as a function of application is exposed to different process conditions, wherein the clock frequency of the microcontroller is ascertained at least two different temperature values, and/or at least two different voltage values. Based on the ascertained values, the dependence of the clock frequency of the microcontroller on temperature over a predetermined temperature- and/or frequency range and/or the dependence of the clock frequency of the microcontroller on voltage over a predetermined voltage- and/or frequency range is ascertained. The ascertained values are stored, and the influence of temperature and/or voltage on the clock frequency of the microcontroller is at least approximately compensated taking into considering the ascertained temperature dependence and/or the ascertained voltage dependence.