Switching value acquisition method and device

The invention discloses a switching value acquisition method and device. The method comprises that a signal delay unit is added in a switching value circuit, a self-checking signal is added in an acquisition circuit during acquisition, the switching value circuit performs delay processing on the sel...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LI CHAO, LUAN QINGWEN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a switching value acquisition method and device. The method comprises that a signal delay unit is added in a switching value circuit, a self-checking signal is added in an acquisition circuit during acquisition, the switching value circuit performs delay processing on the self-checking signal through the signal delay unit, a self-checking feedback signal after the acquisition delay of the acquisition circuit delay, and whether the acquisition is accurate is determined through the fact that whether the delay of the self-checking feedback signal relative to the self-checking signal is a preset delay time. An acquisition loop of the switching value acquisition device comprises the acquisition circuit and the switching value circuit, wherein the acquisition circuit comprises a self-checking signal generation unit, and the switching value circuit comprises the signal delay unit. According to the switching value acquisition method and device, not only the number of external wires can be redu