Sensor apparatus
OwnerCary Ratnerinventor
Life of this patent
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Abstract
A sensor apparatus, such as a pressure gauge, comprises a sensor arranged to produce a sensor output signal that varies with a measured parameter such as pressure, and a plurality of output channels each arranged to receive the sensor output signal. The output channels are each optimized for a different range of the measured parameter. The apparatus further comprises an analog to digital converter (ADC) and control module arranged to select one of the output channels and connect it to the ADC so as to produce a digital channel output, and an output module configured to generate an output reading from the digital channel output of the selected channel.
Claims16
A sensor apparatus comprising a sensor arranged to produce a sensor output signal that varies with a measured parameter, a plurality of output channels each arranged to receive the sensor output signal, the output channels each being optimized for a different range of the measured parameter, an analogue to digital converter (ADC) and at least one controller arranged to select one of the output channels and connect it to the ADC so as to produce a digital channel output, and an output module configured to generate an output reading from the digital channel output of the selected channel;
- wherein each of the output channels comprises an amplifier, each of the amplifiers has a gain, and the gain of the amplifier in each of the channels is different from that of the amplifiers of the other channels.
A sensor apparatus comprising a sensor arranged to produce a sensor output signal that varies with a measured parameter, a plurality of output channels each arranged to receive the sensor output signal, the output channels each being optimized for a different range of the measured parameter, an analogue to digital converter (ADC) and at least one controller arranged to select one of the output channels and connect it to the ADC so as to produce a digital channel output, and an output module configured to generate an output reading from the digital channel output of the selected channel;
- wherein each of the output channels comprises temperature compensation module arranged to compensate for variations in the output signal caused by variations in temperature;
- and the temperature compensation module of each of the channels is different from the temperature compensation modules of the other channels.
A sensor apparatus comprising a sensor arranged to produce a sensor output signal that varies with a measured parameter, a plurality of output channels each arranged to receive the sensor output signal, the output channels each being optimized for a different range of the measured parameter, an analogue to digital converter (ADC) and at least one controller arranged to select one of the output channels and connect it to the ADC so as to produce a digital channel output, and an output module configured to generate an output reading from the digital channel output of the selected channel;
- wherein each of the channels comprises an analogue section and a digital section, and the apparatus further comprises at least one switch arranged selectively to connect the ADC between the two sections of each of the channels.
Dependencies are inferred from the claim text.