Device for contactless monitoring of a patient's vital signs in the form of a measuring mat comprising at least one measuring element. The measuring element comprises a piezoelectric sensor with a first and a second conductive electrode and a piezoelectric element. Near the piezoelectric sensor is a third conductive electrode. The exertion of a mechanical force on the cover of the measuring element results in a change in the distance between at least one of the electrodes of the piezoelectric sensor and the third conductive electrode. This change in distance is expressed as a difference in the detected parameter corresponding to a change in the patient's vital signs.
