Patent ID: 11944457
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A  G  H | IPC A

Claim 11:
12. A method of controlling a sensor device, the sensor device comprising a shaft, a pair of electrical wires running along the shaft and a sensing head at a distal end of the shaft connected to the pair of electrical wires, wherein the method comprises:
operating a first sensor of the sensor head resulting in signals carried by the pair of electrical wires in a first frequency range and a first voltage range; and
operating a second sensor of the sensor head resulting in signals carried by the pair of electrical wires in a second frequency range different to the first frequency range and a second voltage range different to the first voltage range,
wherein the method comprises shorting the first sensor based on at least frequency by detecting when signals in the second frequency range are present on the pair of electrical wires using a frequency-dependent filter circuit, and in response closing a shorting switch thereby to prevent the first sensor being exposed to signals associated with the second sensor.