Indicator arrangement
AssigneeWäRtsilä Finland Oy
InventorsAri Saikkonen, Perri Laakso, Markku Kallio, Antero Salojärvi
Life of this patent
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Abstract
An indicator arrangement according to the invention also comprises a resistor (4) the first end of which is connected to between a passive acceleration sensor (1) and a filtering means (2) and the other end is connected to a basic voltage level. An output (5) is also connected to the connection of the first end of the resistor. The indicator arrangement also comprises a direct voltage source (3) the first end of which is connected to a passive acceleration sensor (1) while the other end is connected to a basic voltage level. Voltage can be detected from the output (5) of the indicator arrangement for detecting a fault in the indicator arrangement.
Claims9
1-6. (canceled)
An indicator arrangement for piston-operated internal combustion engines comprising a passive acceleration sensor (1) for forming a voltage signal and a filtering means (2) for filtering the said voltage signal,
- characterized in that the indicator arrangement comprises a resistor (4) the first end of which is connected between a passive acceleration sensor (1) and a filtering means (2) and the other end is connected to a basic voltage level, the connection of the first end of the resistor being also connected to an output (5), the indicator arrangement also comprising a direct voltage source (3) the first end of which is connected to the passive acceleration sensor (1) and the other end of which is connected to a basic voltage level, thus the passive acceleration sensor (1) and the direct voltage source (3) being in series, the voltage at the output (5) of the indicator arrangement enabling detection of a fault in the indicator arrangement.
Dependencies are inferred from the claim text.