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1. 发明授权

US5963147A Conversion circuit for process control system 失效
标题翻译：过程控制系统转换电路
公开(公告)号：US5963147A
公开(公告)日：1999-10-05
申请号：US897523
申请日：1997-07-21
申请人： Brian L. Westfield , Stephen D. Anderson , Bennett L. Louwagie , Todd A. Piechowski , Gregory C. Brown
发明人： Brian L. Westfield , Stephen D. Anderson , Bennett L. Louwagie , Todd A. Piechowski , Gregory C. Brown
IPC分类号： G05B11/36 , G05B19/042 , G05B19/418 , H04L25/02 , G08C19/04
CPC分类号： G05B19/0423 , G05B19/4185 , G05B2219/25189 , G05B2219/25191 , G05B2219/31121 , G05B2219/31126 , G05B2219/31135 , G05B2219/33197 , Y02P90/18
摘要： Conversion circuitry for use in a process control system is adapted for coupling to a primary process control loop. Digital receiver circuitry in the conversion circuitry receives a digital signal transmitted over the primary process control loop from a field transmitter and responsively provides a digital output. A microprocessor receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry for coupling to a secondary process control loop receives the secondary loop control output from the microprocessor and responsively controls current flowing through the secondary process control loop. The current flowing through the secondary process control loop is related to the digital signal transmitted by the field transmitter.
摘要翻译：用于过程控制系统的转换电路适于耦合到主过程控制回路。转换电路中的数字接收机电路接收从现场发射机通过主过程控制回路传输的数字信号，并且响应地提供数字输出。微处理器接收数字输出并且响应地提供辅助回路控制输出。用于耦合到次级过程控制回路的二次回路控制电路接收来自微处理器的次级回路控制输出，并且响应地控制流过次级过程控制回路的电流。流过次级过程控制回路的电流与现场发射机发射的数字信号有关。

2. 发明授权

US06307483B1 Conversion circuit for process control system 失效
标题翻译：过程控制系统转换电路
公开(公告)号：US06307483B1
公开(公告)日：2001-10-23
申请号：US09287775
申请日：1999-04-07
申请人： Brian L. Westfield , Stephen D. Anderson , Bennett L. Louwagie , Todd A. Piechowski , Gregory C. Brown
发明人： Brian L. Westfield , Stephen D. Anderson , Bennett L. Louwagie , Todd A. Piechowski , Gregory C. Brown
IPC分类号： G08C1904
CPC分类号： G05B19/0423 , G05B19/4185 , G05B2219/25189 , G05B2219/25191 , G05B2219/31121 , G05B2219/31126 , G05B2219/31135 , G05B2219/33197 , Y02P90/18
摘要： Conversion circuitry for use in a process control system is adapted for coupling to a primary process control loop. Digital receiver circuitry in the conversion circuitry receives a digital signal transmitted over the primary process control loop from a field transmitter and responsively provides a digital output. A microprocessor receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry for coupling to a secondary process control loop receives the secondary loop control output from the microprocessor and responsively controls current flowing through the secondary process control loop. The current flowing through the secondary process control loop is related to the digital signal transmitted by the field transmitter.
摘要翻译：用于过程控制系统的转换电路适于耦合到主过程控制回路。转换电路中的数字接收机电路接收从现场发射机通过主过程控制回路传输的数字信号，并且响应地提供数字输出。微处理器接收数字输出并且响应地提供辅助回路控制输出。用于耦合到次级过程控制回路的二次回路控制电路接收来自微处理器的次级回路控制输出，并且响应地控制流过次级过程控制回路的电流。流过次级过程控制回路的电流与现场发射机发射的数字信号有关。

3. 发明授权

US5650777A Conversion circuit for process control system 失效
标题翻译：过程控制系统转换电路
公开(公告)号：US5650777A
公开(公告)日：1997-07-22
申请号：US479801
申请日：1995-06-07
申请人： Brian L. Westfield , Stephen D. Anderson , Bennett L. Louwagie , Todd A. Piechowski
发明人： Brian L. Westfield , Stephen D. Anderson , Bennett L. Louwagie , Todd A. Piechowski
IPC分类号： G05B11/36 , G05B19/042 , G05B19/418 , H04L25/02 , G08C19/36
CPC分类号： G05B19/0423 , G05B19/4185 , G05B2219/25189 , G05B2219/25191 , G05B2219/31121 , G05B2219/31126 , G05B2219/31135 , G05B2219/33197 , Y02P90/18
摘要： Conversion circuitry for use in a process control system is adapted for coupling to a primary process control loop. Digital receiver circuitry in the conversion circuitry receives a digital signal transmitted over the primary process control loop from a field transmitter and responsively provides a digital output. A microprocessor receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry for coupling to a secondary process control loop receives the secondary loop control output from the microprocessor and responsively controls current flowing through the secondary process control loop. The current flowing through the secondary process control loop is related to the digital signal transmitted by the field transmitter.
摘要翻译：用于过程控制系统的转换电路适于耦合到主过程控制回路。转换电路中的数字接收机电路接收从现场发射机通过主过程控制回路传输的数字信号，并且响应地提供数字输出。微处理器接收数字输出并且响应地提供辅助回路控制输出。用于耦合到次级过程控制回路的二次回路控制电路接收来自微处理器的次级回路控制输出，并且响应地控制流过次级过程控制回路的电流。流过次级过程控制回路的电流与现场发射机发射的数字信号有关。

4. 发明授权

US5535243A Power supply for field mounted transmitter 失效
标题翻译：现场安装变送器电源
公开(公告)号：US5535243A
公开(公告)日：1996-07-09
申请号：US274385
申请日：1994-07-13
申请人： Kevin D. Voegele , Todd A. Piechowski
发明人： Kevin D. Voegele , Todd A. Piechowski
IPC分类号： G08C19/02 , G05B15/02 , H04L27/04 , H04L27/12 , H04L27/20
CPC分类号： G05B15/02
摘要： A field mounted transmitter for use in a two-wire process control loop includes a sensor, measurement circuitry and a power supply. The sensor senses a process variable of a process which is transmitted over the control loop by the measurement circuitry. The power supply is powered by a current flowing through the control loop and powers the measurement circuitry. The power supply includes an inductive element coupled to the measurement circuitry and a switch which selectively couples the inductive element to the control loop.
摘要翻译：用于二线过程控制回路的现场安装变送器包括传感器，测量电路和电源。传感器感测通过测量电路在控制回路上传输的过程的过程变量。电源由流过控制回路的电流供电，并为测量电路供电。电源包括耦合到测量电路的感应元件和选择性地将感应元件耦合到控制回路的开关。

5. 发明申请

US20090019435A1 SYSTEM AND METHOD FOR OVER THE AIR PROGRAMMING 审中-公开
标题翻译：用于空中编程的系统和方法
公开(公告)号：US20090019435A1
公开(公告)日：2009-01-15
申请号：US11776678
申请日：2007-07-12
申请人： Todd A. Piechowski , Fred Bezat
发明人： Todd A. Piechowski , Fred Bezat
IPC分类号： G06F15/177 , G06F9/44
CPC分类号： G06F8/65 , G06F9/4401
摘要： A method for programming computer code at a remote platform having a local computer. A home device sends a computer code to the local computer via wireless transmission wherein the computer code is stored within an alternate area of a flash memory. Once a complete copy of the computer code is recognized at the local computer the integrity of the computer code is checked and if proper, a new boot address is assigned at the local computer. At this time the local computer is rebooted such that when the computer restarts the alternate computer code is used thus effectively updating the computer software.
摘要翻译：一种用于在具有本地计算机的远程平台上编程计算机代码的方法。家庭设备通过无线传输将计算机代码发送到本地计算机，其中计算机代码存储在闪速存储器的替代区域内。一旦在本地计算机识别出计算机代码的完整副本，则检查计算机代码的完整性，如果正确，则在本地计算机上分配新的引导地址。此时本地计算机重新启动，使得当计算机重新启动时，替代计算机代码被使用，从而有效地更新计算机软件。

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