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US 6,324,482 B1Granted
Sensor provided with adjusting function
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsToshiya Nakagaki, Toshiyuki Nozoe, Takahiro Manabe
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Abstract
An object of the present invention is to provide an automatic compensation sensor that can eliminate an exclusive input terminal for the compensation mode signal. To achieve this object, the present invention comprises a sensor body (1), a signal output terminal (5) for outputting signals from the sensor body (1), and a controller for compensating the output signal from this signal output terminal (5).
Claims9
An automatic compensation sensor comprising:
- a signal output terminal for outputting a compensated sensor signal in a normal mode and for receiving an external signal in a compensation mode;
- a sensing unit for outputting a sensor signal;
- compensation value means for determining and outputting a compensation value in the normal mode and for setting the compensation value in the compensation mode based on the external signal;
- and
- an adder for summing the sensor signal and the compensation value and for producing the compensated sensor signal.
2 more elements
An automatic compensation sensor comprising:
- a sensing unit for outputting a sensor signal;
- an Alternating Current (AC) component separator for outputting an AC component signal;
- compensation value means for determining and outputting a compensation value in a normal mode and for setting the compensation value in a compensation mode based on the AC component signal;
- and
- an adder for summing the sensor signal and the compensation value and for producing the compensated sensor signal.
2 more elements
An automatic compensation sensor comprising:
- a sensor body having an analog input for receiving an analog signal, the sensor body including:
- a sensing unit for producing a first sensor signal,
- an adder for summing the analog signal with the first sensor signal and for producing a compensated sensor signal, and
- a signal output stage for adjusting and outputting the compensated sensor signal;
- a sensor for producing a second sensor signal;
- an error amplifier for generating an error signal based on the compensated sensor signal and a predetermined reference value;
- and
- compensation value means, having a memory for storing a plurality of compensation values, for generating the analog signal based on at least one of the plurality of compensation values, the second sensor signal, and the error signal.
5 more elements
Dependencies are inferred from the claim text.