Singlechip signal sampling apparatus without module converter and sampling method thereof

Abstract

This invention discloses one single machine signal sample device and its method without A / D converter, which comprises single machine, one comparer and one switch tube and one RC expansive circuit, wherein the comparer front input end is connected to test voltage and its negative input end is connected to the output end of RC charge circuit; the output end of comparer is connected to the capture function end of signal machine; the said switch tube collection electrode is connected to the negative input end of comparer and its emission electrode is connected to the earth connection end of RC charge circuit; the switch tube base electrode is connected to the single machine output end.

Description

technical field [0001] The invention belongs to the field of signal sampling, in particular to a single-chip signal sampling device without an analog-to-digital converter and a sampling method thereof. Background technique [0002] At present, when collecting analog signals with a single-chip microcomputer, an analog-to-digital converter must be added between the analog signal and the single-chip microcomputer to convert the analog signal into a digital signal. Because the microcontroller can only process digital signals. Although some single-chip microcomputers integrate the analog-to-digital converter into the chip, in fact, the analog-to-digital converter is not eliminated. Analog-to-digital converters are relatively expensive, especially for analog-to-digital converters with relatively high precision, sometimes even greater than the price of the microcontroller itself. Contents of the invention [0003] The present invention provides a single-chip signal sampling dev...

AI Technical Summary

Problems solved by technology

Although some single-chip microcomputers integrate the analog-to-digital converter into the chip, in fact, the analog-to-digital converter is not eliminated.

Analog-to-digital converters are relatively expensive, especially for analog-to-digital converters with relatively high precision, sometimes even greater than the price of the microcontroller itself

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