公开(公告)号：US20170082471A1

公开(公告)日：2017-03-23

申请号：US14862832

申请日：2015-09-23

Applicant: Texas Instruments Incorporated

Inventor： R. Venkata Ramanan ,  Anand Dabak ,  Amardeep Sathyanarayana

IPC: G01F1/66

CPC classification number: G01F1/667 ,  G01F25/0007

Abstract: A method, system and apparatus is disclosed for auto-tuning a circuit associated with an upstream transducer (UPT) and a circuit associated with a downstream transducer (DNT) for reciprocal operation in an ultrasonic flowmeter. The method includes exchanging signals between the upstream transducer and the downstream transducer; comparing at least one of respective maximum amplitudes of an upstream signal and a downstream signal and respective center frequencies of a Fast Fourier Transform (FFT) of the upstream signal and the downstream signal; and responsive to determining that at least one of the respective maximum amplitudes and the respective center frequencies do not match, correcting the mismatch.

公开(公告)号：US09584185B2

公开(公告)日：2017-02-28

申请号：US13659536

申请日：2012-10-24

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Kumaran Vijayasankar

IPC: H02J1/00 ,  H02J3/00 ,  H04B3/54

CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/542 ,  H04B2203/5433

Abstract: Systems and methods for relative phase detection and zero crossing detection for power line communications (PLC) are described. In some embodiments, both transmit and receive PLC devices detect a zero crossing on an AC mains phase. The devices start a phase detection counter (PDC) by generating a zero crossing pulse within 5% of the actual zero crossing time. When a frame is transmitted, the transmitting device includes a PDC value in the frame control header (FCH). The PDC value corresponds to the start time of the FCH. When the frame is received at the receive PLC device, the receive PLC device measures a local PDC value between the zero crossing and the start of the FCH. The receive device compares the local PDC value to the PDC value in the FCH of the received frame and determines if the devices are on the same phase.

Abstract translation: 描述了用于电力线通信（PLC）的相对相位检测和零交叉检测的系统和方法。 在一些实施例中，发送和接收PLC设备都检测AC电源相位上的过零点。 器件通过在实际过零时间的5％内产生过零脉冲来启动相位检测计数器（PDC）。 当发送帧时，发送装置在帧控制报头（FCH）中包括PDC值。 PDC值对应于FCH的开始时间。 当在接收PLC设备处接收到帧时，接收PLC设备测量过零点和FCH开始之间的本地PDC值。 接收设备将本地PDC值与接收帧的FCH中的PDC值进行比较，并确定设备是否处于同一相位。

公开(公告)号：US09453867B2

公开(公告)日：2016-09-27

申请号：US14203689

申请日：2014-03-11

Applicant: Texas Instruments Incorporated

Inventor： Anand Dabak ,  Clive Bittlestone

IPC: G01C3/06 ,  G01R31/00 ,  G06F11/00 ,  H04B11/00 ,  G01S7/52

CPC classification number: G01R31/00 ,  G01S7/5205 ,  G06F11/00 ,  G06F11/27 ,  H04B11/00

Abstract: A transceiver device combination includes a first ultrasound transducer and a processor chip including a central processing unit (CPU). A memory is coupled to the CPU including stored ultrasound communications software for rendering the processor chip a target device for an ultrasound probe driven via a host computing device having a second ultrasound transducer for together performing ultrasonic debugging of the processor chip. The transceiver device combination includes (i) a transmit path including an ultrasound driver having an input driven by an output of the CPU, where an output of the ultrasound driver is coupled to drive an input of the first ultrasound transducer to transmit ultrasound signals and (ii) a receive path including analog signal processing circuitry that couples an output of the first ultrasound transducer responsive to received ultrasound signals from the ultrasound probe to an input of the CPU.

Abstract translation: 收发器装置组合包括第一超声换能器和包括中央处理单元（CPU）的处理器芯片。 存储器耦合到CPU，包括存储的超声波通信软件，用于使处理器芯片用于经由具有第二超声波换能器的主计算装置驱动的超声波探头的目标装置，以一起执行处理器芯片的超声波调试。 收发器设备组合包括（i）包括具有由CPU的输出驱动的输入的超声驱动器的发射路径，其中超声驱动器的输出被耦合以驱动第一超声换能器的输入以发射超声信号和（ ii）包括模拟信号处理电路的接收路径，所述模拟信号处理电路将所述第一超声换能器的输出响应所接收的超声信号从所述超声波探头耦合到所述CPU的输入。

公开(公告)号：US09300361B2

公开(公告)日：2016-03-29

申请号：US14576334

申请日：2014-12-19

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

IPC: H04B3/00 ,  H04B3/54

CPC classification number: H04B3/54 ,  H04B3/546 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L5/14

Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period.

公开(公告)号：US20150180539A1

公开(公告)日：2015-06-25

申请号：US14576334

申请日：2014-12-19

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

IPC: H04B3/54

CPC classification number: H04B3/54 ,  H04B3/546 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L5/14

Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period.

Abstract translation: 描述了实现电力线通信（PLC）技术共存的系统和方法。 在一些实施例中，由诸如PLC网关的PLC设备执行的方法可以包括响应于由PLC设备接收到的外部前置码来检测来自PLC网络上的外部PLC设备的通信，终止到PLC网络的传输，以便 响应于外部前导码的特定于网络的共存扩展帧间间隔（cEIFS）时间段，以及在网络特定时间段结束之后恢复到PLC网络的传输。

公开(公告)号：US20150061636A1

公开(公告)日：2015-03-05

申请号：US14317730

申请日：2014-06-27

Applicant: Texas Instruments Incorporated

Inventor： Kaichien Tsai ,  Minghua Fu ,  Anand Dabak

IPC: G01R35/00

CPC classification number: G01R35/005 ,  G01R35/04

Abstract: A system is provided for calibrating a device. The system includes a reference component, a sampling component, a calibration component, a comparing component and a proportional integral component. The reference component provides a reference power signal based on a voltage instruction and a current instruction. The sampling component samples a voltage signal to obtain a sampled voltage value and samples a current signal to obtain a sampled current value. The calibration component generates a calibrated power signal based on the sampled voltage value and the sampled current. The comparing component generates an error signal based on the reference power signal and the calibrated power signal. The proportional integral component and the calibration component are a feedback system that is operable to calibrate the gain of the sampled voltage and the sample current based on the error signal.

Abstract translation: 提供用于校准装置的系统。 该系统包括参考组件，采样组件，校准组件，比较组件和比例积分组件。 参考组件基于电压指令和当前指令提供参考功率信号。 采样分量采样电压信号以获得采样电压值并对电流信号进行采样以获得采样电流值。 校准组件基于采样电压值和采样电流产生校准功率信号。 比较组件基于参考功率信号和校准功率信号产生误差信号。 比例积分分量和校准分量是可用于基于误差信号校准采样电压和采样电流的增益的反馈系统。

公开(公告)号：US08948274B2

公开(公告)日：2015-02-03

申请号：US13659870

申请日：2012-10-24

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

IPC: H04B3/00 ,  H04B3/54

CPC classification number: H04B3/54 ,  H04B3/546 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L5/14

Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period.

Abstract translation: 描述了实现电力线通信（PLC）技术共存的系统和方法。 在一些实施例中，由诸如PLC网关的PLC设备执行的方法可以包括响应于由PLC设备接收到的外部前置码来检测来自PLC网络上的外部PLC设备的通信，终止到PLC网络的传输，以便 响应于外部前导码的特定于网络的共存扩展帧间间隔（cEIFS）时间段，以及在网络特定时间段结束之后恢复到PLC网络的传输。