Abstract: An acquisition apparatus for acquiring physiological data of an individual, configured to be installed in a bed frame, with an acquisition portion which includes a sensor intended to capture mechanical waves transiting in the bed frame, a support device including one or more rigid panels, the support device being configured to rest on bed frame elements which may be discontinuous for example slats, so that the support device is interposed between the bed frame elements and the sensor, and may provide a substantially continuous support to the sensor receiving the mechanical waves generated by the individual through the bedding, if necessary with folding zones between panels.