发明名称 |
Digital Filter for Digital Weigher |
摘要 |
A digital filter for a digital weigher reduces a calculation time in an adapted filter while maintaining weighing accuracy, a digital weigher includes the filter for the weigher, and a wave filtering process method uses the digital filter for the digital weigher. A fixation section of a FIR filter removes an oscillating component in a predetermined frequency range, from a digital weighing signal. A determination device determines whether an amplitude of an oscillating component contained in a digital weighing signal derived by performing a wave filtering process falls within a predetermined damping range. A control device changes a frequency range of an oscillating component to be removed by an adaptive section of the filter based on a result of the determination. The adaptive section of the filter performs the wave filtering process with respect to the oscillating component in the frequency range changed by the control device. |
申请公布号 |
US2017052058(A1) |
申请公布日期 |
2017.02.23 |
申请号 |
US201615346581 |
申请日期 |
2016.11.08 |
申请人 |
YAMATO SCALE CO., LTD. |
发明人 |
Ito Sachie;Nagai Takayuki;Shimizu Ryo |
分类号 |
G01G23/01;G01G23/06 |
主分类号 |
G01G23/01 |
代理机构 |
|
代理人 |
|
主权项 |
1. A digital filter for a digital weigher, comprising:
a FIR filter for performing a wave filtering process with respect to a digital weighing signal containing an oscillating component; a determination device for determining whether or not an amplitude of an oscillating component contained in a digital weighing signal derived by performing the wave filtering process by the FIR filter falls within a predetermined allowable damping range, in every predetermined sampling of the digital weighing signal within one weighing cycle; and a control device; wherein the FIR filter includes a fixation section for removing an oscillating component in a predetermined frequency range, and an adaptive section for removing an oscillating component in a changeable frequency range; wherein the fixation section is configured to remove a character frequency of a weight sensor of a digital weigher which weights objects, from the digital weighing signal input to the FIR filter; and wherein the control device is configured to change the frequency range of the oscillating component which is to be removed by the adaptive section, based on a result of the determination performed by the determination device. |
地址 |
Akashi-shi JP |