| 摘要 |
An apparatus (10) for detecting the presence or absence of a patient adjacent to a patient-carrying surface (12, 16) of a patient-support device (14, 18) including at least one sensing element (20, 22) spaced apart from the patient-carrying surface (12, 16), defining a detection space (26, 28) adjacent to the patient-carrying surface (12, 16) and providing an input signal in response to the dielectric constant within the detection space (26, 28). A control unit (24) provides an output signal indicating the presence or absence of the patient within the detection space (26, 28) in response to the input signal. A booster element (64) including a plate (66) positioned to lie adjacent the patient-carrying surface (12, 16) for shaping and positioning the detection space and a connector (68) electrically coupling the plate (66) to the sensing element (30, 620) may be provided. |
