Digital automobile meter automatically calibrated by analog signal sampling

The utility model relates to a digital automobile meter automatically calibrated by analog signal sampling, which comprises an analog signal sampling control circuit I, a power circuit II, a switch alarm circuit III, meter drive circuit IV, a digital and switch signal sampling circuit V and a meter...

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Bibliographische Detailangaben
Hauptverfasser:	QIU SHUXIAN, RUAN SHAOFAN, SONG LIANBIN, CHEN XIAOCHUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PERFORMING OPERATIONS PHYSICS REGULATING TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The utility model relates to a digital automobile meter automatically calibrated by analog signal sampling, which comprises an analog signal sampling control circuit I, a power circuit II, a switch alarm circuit III, meter drive circuit IV, a digital and switch signal sampling circuit V and a meter control chip, wherein the analog signal sampling control circuit I comprises a sampling electronic switch, one way of the electronic switch is connected with a sampling reference voltage control module, one way thereof is connected with a sampling voltage module, and the another way thereof is connected with the sampling switch control port of the meter control chip. The utility model aims at the possible influence of voltage difference between the analog sensor signal sampling circuit grounding of the digital automobile meter and the meter grounding to adopt the control method and circuit of control measures so as to eliminate the voltage influence that possibly exists in the sensor circuit.