US Patent 11517229 Biosensing device and activation method thereof

A biosensing device includes a sensor module and an electric signal transducer. The sensor module includes a biosensor adapted for measuring a biosignal of a host, and a fixed seat including a conducting member that is electrically connected to the biosensor. The electric signal transducer is for receiving and sending the biosignal measured by the biosensor, is coupled to the sensor module, and includes an electric signal unit electrically connected to the conducting member, and a battery connected to the electric signal unit. The electric signal unit has two electrical contacts that cooperatively define a switch. The battery provides power supply to the biosensor when the electric signal transducer is coupled to the sensor module.