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Dynamic filter

A filter and filter value technology, applied in the filter field, can solve problems such as offset and instability

Inactive Publication Date: 2007-02-07
OPTIMUM POWER TECH LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In data acquisition systems, sensors or their wiring often generate unwanted noise that offsets the read value from the actual sensed value
For example, unwanted signal distortions can be produced by vibrations of mechanical sensors or by unstable operating systems

Method used

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Examples

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Embodiment Construction

[0023] Reference will now be made to embodiments of systems, apparatus and methods for filtering signals to minimize small signal fluctuations while rapidly responding to larger signal fluctuations. Examples of these filter embodiments are explained in the drawings. The details, features and advantages of these filter embodiments will become more apparent in the following detailed description of their embodiments.

[0024] References in the specification to "one embodiment," "an embodiment," or similar references are intended to mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment of the present invention . The appearances of these terms in various places in the specification are not necessarily referring to the same embodiment. References to "or" are also intended to be inclusive, so that "or" can mean one or the other of a band or term or more than one band or term.

[0025] It sho...

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PUM

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Abstract

A system, an apparatus, and a method for dynamically filtering a signal, in order to minimize small signal fluctuations while reacting to larger signal fluctuations. The system, apparatus, and method include providing a filtered value comprising a portion of a previously determined value and a portion of a currently determined value, the portions depending on a magnitude of change between those previously and currently determined values, such that the filtered value is biased toward the previously determined value when the magnitude of change is small and biased more toward the currently determined value when the magnitude of change is larger.

Description

[0001] (cross-reference to related application) [0002] Not applicable. [0003] (Statement on Co-funded Research) [0004] Not applicable. technical field [0005] The present invention relates generally to filters, and particularly to filters that minimize small signal fluctuations while rapidly responding to larger signal fluctuations. Background technique [0006] When used in signal conditioning techniques, filters can suppress noise present on a signal or can average oscillating or unstable signals or can do both at the same time. Such filters may be implemented in software, where, for example, a portion of a signal that has been converted into digital information may be processed by instructions executed by a processor. Such filters can also be implemented in hardware, for example, which can directly process analog signals carrying analog or digital information. When implemented in hardware, the filtered signal can be converted to digital information after passin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02
CPCH03H17/0261
Inventor 格兰·F.·卡特菲尔德戴尔·K.·韦尔斯
Owner OPTIMUM POWER TECH LP