Pressure sensor disconnect detection for a blood treatment device
First Claim
Patent Images
1. A system for detecting an electrical sensor circuit comprising:
- a sensor signal processing circuit further comprising an input port, a signal line connecting the input port to the processing circuit, a pull-up resistor connected between the input port and a predetermined voltage, wherein said signal line is connected to an amplifier;
a sensor circuit comprising a connector adapted to connect to the connector, wherein the sensor circuit has a resistance substantially less than the pull-up resistor, andwherein the sensor signal processing circuit detects an unconnected sensor based on the amplification of the voltage being outside a preset limit.
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Abstract
A system is disclosed for detecting an electrical sensor, the system includes a sensor signal processing circuit further comprising an input port to receive a connector including the output signal lines of the sensor, a resistor connected to the output signal line of said input port, wherein the resistor is connected to a predetermined voltage; a sensor circuit having a connector adapted to connect to the connector, wherein the sensor circuit has a resistance substantially less than the pull-resistor, and the sensor signal processing circuit detects an unconnected sensor based on the voltage applied by the resistor.
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Citations
14 Claims
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1. A system for detecting an electrical sensor circuit comprising:
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a sensor signal processing circuit further comprising an input port, a signal line connecting the input port to the processing circuit, a pull-up resistor connected between the input port and a predetermined voltage, wherein said signal line is connected to an amplifier; a sensor circuit comprising a connector adapted to connect to the connector, wherein the sensor circuit has a resistance substantially less than the pull-up resistor, and wherein the sensor signal processing circuit detects an unconnected sensor based on the amplification of the voltage being outside a preset limit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for detecting an electrical sensor circuit comprising:
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a sensor signal processing circuit further comprising an input to receive a connector to an output of the sensor circuit, a signal line connecting the input to the processing circuit, and a resistor connected between a signal line and a predetermined voltage; the sensor circuit comprising a connector adapted to connect to the input, wherein the sensor circuit has a resistance substantially less than the resistor, and wherein the sensor signal processing circuit detects an unconnected sensor circuit based on the voltage being outside a predetermined limit. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification