A spatial sensing device to improve the user's movement ability and provide assistance in the autonomous walking of visually impaired or blind people, which is also easy-to-use, ergonomic and portable, the device comprises a housing including a set of modules； attaching means bonded to the housing in order to secure the device to the user； at least one user information access means； and an ultrasound transducer positioned at the junction between one housing side and the attaching means； the device is characterized in that the ultrasound transducer is positioned on the device at a slant angle (α) with respect to the device axis (Z), such that during the use of the device, the ultrasound transducer is directed toward the user's front side in order to emit and detect signals which will be processed by the set of modules in the housing, wherein the set of modules comprises a processing module interacting with an intercommunication module, a position and/or movement sensing module, a spatial sensing module, and a power module.
