A wearable bladder monitoring device is disclosed (1) comprising securing means (27, 29) for securing the device to a subject's (40) body； a phased array (11) of ultrasound transducers (10) having configurable output frequencies； a configurable phased array controller (13) adapted to control the phased array to direct ultrasound beams (30, 30', 30") into the subject's body under a plurality of discrete beam angles and to collect echo signals (31, 31', 31") of said ultrasound beams, wherein the phased array controller (13) is adapted to direct a set of ultrasound beams (30, 30', 30") into the subject's body for at least a subset of said discrete beam angles in response to a configuration instruction defining the respective output frequencies of the ultrasound beams in said set； and a device communication module (21) for communicating data pertaining to said echo signals to a remote device (5) to facilitate the remote processing of said data and to receive said configuration instruction from the remote device. Also disclosed is a wearable bladder monitoring system adapted to generate such a configuration instruction for the estimation of the degree of turbidity of urine contained in the monitored bladder with the wearable bladder monitoring device, as well as a computer-implemented method and computer program product for facilitating such urine turbidity estimation.L'invention concerne un dispositif portable de surveillance de vessie (1) comprenant des moyens de fixation (27, 29) pour fixer le dispositif au corps d'un sujet (40)； un réseau à commande de phase (11) de transducteurs ultrasonores (10) ayant des fréquences de sortie configurables； un contrôleur de réseau à commande de phase configurable (13) conçu pour contrôler le réseau à commande de phase afin de diriger des faisceaux d'ultrasons (30, 30 ', 30 ") dans le corps du sujet sous une pluralité d'angles de faisceau discrets et pour collecter des signaux d'écho (31, 31 ', 31 ") desdits faisceaux d'ultrasons, l
