Weighing device, especially load cell for a combination scale
The invention relates to a weighing device ( 3 ), especially for a combination scale or a multi-point scale, with a force-sensing unit ( 9 ) for converting a weight (F 1 , F 2 ) acting on a load sensor ( 5 ) of the force-sensing unit ( 9 ) into an analog electrical signal (S 1 , S 2 ), with an analo...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The invention relates to a weighing device ( 3 ), especially for a combination scale or a multi-point scale, with a force-sensing unit ( 9 ) for converting a weight (F 1 , F 2 ) acting on a load sensor ( 5 ) of the force-sensing unit ( 9 ) into an analog electrical signal (S 1 , S 2 ), with an analog/digital converter ( 11 ), to which the analog electrical signal (S 1 , S 2 ) is fed and which converts the analog electrical signal (S 1 , S 2 ) into a digital electrical signal (M 1 , M 2 ), and with a controller ( 13 ) for controlling the analog/digital converter ( 11 ) and for additional digital processing of the digital values (M 1 i, M 2 i) of the digital electrical signal (M 1 , M 2 ) fed to it. According to the invention, the weighing device ( 3 ) has a synchronization output ( 15 b , 15 c), which is connected to the controller ( 13 ) or to the analog/digital converter ( 11 ) and to which a synchronization signal (Ssync, S'sync) is fed that includes at least the information of the starting time points of the individual conversion processes performed by the analog/digital converter unit ( 11 ) for determining a digital value (M 1 i, M 2 i) of the digital electrical signal (M 1 , M 2 ), and/or the weighing device ( 3 ) has a synchronization input ( 15 d , 15 e) connected to the controller ( 13 ) or the analog/digital converter ( 11 ), to which an external synchronization signal (Ssync, S'sync) can be fed that includes at least the information of one or more desired starting time points for a conversion process to be performed by the analog/digital converter ( 11 ) for determining a digital value (M 1 i, M 2 i) of the digital electrical signal (M 1 , M 2 ), wherein the analog/digital converter ( 11 ) performs the conversion processes corresponding to the external synchronization signal (Ssync, S'sync) fed to it directly or corresponding to the internal synchronization signal (Ssync,int) fed to it by the controller ( 13 ), wherein the controller ( 13 ) derives this internal synchronization signal from the external synchronization signal (S'sync) fed to it and feeds it to the analog/digital converter unit ( 11 ). |
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