公开(公告)号：US20150051858A1

公开(公告)日：2015-02-19

申请号：US14386374

申请日：2012-10-24

Applicant: ABB TECHNOLOGY LTD.

Inventor： Lilei Zhai ,  Wei Liu ,  Axel Lohbeck

IPC: G01R23/10

CPC classification number: G01R23/10 ,  H03K21/38

Abstract: The present invention discloses a pulse frequency measurement device and method and a control system, the device including: a hardware counter configured to perform a counting operation on an input pulse sequence to output a counting result; and a processing unit configured to obtain number of pulses from the counting result outputted by the hardware counter and measure a first time period during which the obtained number of pulses occupy, in which the processing unit includes a frequency calculation module configured to calculate a frequency of the input pulse sequence based on the obtained number of pulses and the first time period. According to the invention, it is possible to achieve adaptive pulse frequency measurement and multi-channel sampling for multiple input pulse sequences with a relatively low cost while ensuring the accuracy of the measurement result.

Abstract translation: 本发明公开了一种脉冲频率测量装置及方法和控制系统，该装置包括：硬件计数器，被配置为对输入脉冲序列执行计数操作以输出计数结果; 以及处理单元，被配置为从硬件计数器输出的计数结果中获得脉冲数，并且测量所获得的脉冲数占据的第一时间段，其中处理单元包括频率计算模块，其被配置为计算频率 基于获得的脉冲数和第一时间段的输入脉冲序列。 根据本发明，可以在确保测量结果的准确性的同时以相对低的成本实现多输入脉冲序列的自适应脉冲频率测量和多通道采样。