发明名称 |
System, in particular for digitizing a time-continuous and value-continuous periodic signal with a firmly predefined number of samples per period |
摘要 |
A system is disclosed, in particular for digitizing a time-continuous and value-continuous periodic signal with a respective firmly predefined number of samples per period. In at least one embodiment, the system includes an A/D converter for digitizing an analog AC signal applied to the input of the A/D converter, the converter including a single-bit modulator which converts the AC signal into a first data stream of temporally immediately successive single-bit data words at a predefined operating clock rate; and a downstream decimation filter which respectively aggregates a predefined number of temporally immediately successive single-bit data words in the first data stream into respective temporally immediately successive n-bit data words which form a second data stream which corresponds to a digitization of the AC signal at a sampling frequency which is derived from the operating clock rate and the predefined number by way of division. In order to achieve digitization with a respective firmly predefined number of samples per period with relatively little technical complexity, it is proposed in at least one embodiment that the operating clock rate be respectively generated by a digitally adjustable oscillator on the basis of a signal characteristic of the AC signal.
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申请公布号 |
US7880655(B2) |
申请公布日期 |
2011.02.01 |
申请号 |
US20090458934 |
申请日期 |
2009.07.28 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
DANNER ANDREAS;FLEISCHMANN THOMAS |
分类号 |
H03M3/00 |
主分类号 |
H03M3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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