Abstract: A sensor unit for use in devices for simultaneous measurement of signals associated with human tissue impedance and pressure to identify human hemodynamic parameters. The sensor unit of the device attached to a skin surface segment of a human body includes a base with a recess, in which a piezoelectric element of pressure sensor is installed. The unit also has a flexible membrane mounted on the base and overlapping said recess. First and second electrodes are attached to the outer surface of the membrane. The first electrode is mounted opposite the recess and is capable of moving together with the membrane. The second immovable electrode surrounds the first electrode. A central support is mounted between the first electrode and the piezoelectric element. Connected to the electrical outputs of said sensor for measuring signals associated with human tissue impedance, the first and second electrodes are configured to enable contact with the skin surface of the human body.

Abstract: A method for measurements of parameters characterizing human motor activity provides registration of signals generated by load sensors mounted in shoe insoles, with each insole having at least two load sensors, one mounted near the heel, and the other near the toe of the foot. The specific type of motor activity is determined based on temporal correlation of load sensor signals from both insoles and values thereof. Person's weight, including additionally carried weight, is determined by summing up signal values from said load sensors, with the specific type of motor activity considered; thereafter, person's motor stress is determined based on specified type of motor activity and person's weight, including additionally carried weight. The method enables a real-time monitoring of motor stress of a person at different types of motor activity, e.g. running, walking at different pace, standing, with person's weight, including additionally carried weight, taken into consideration.

Abstract: Determining a state of water deficiency in a human body during daily life activities is done by measuring an impedance of a portion of the human body at a low frequency and at a high frequency. An amount of fluid in the body tissues in the volume under study is assessed based on the impedance at the high frequency. A current amount of extracellular fluid in the tissues in the volume is assessed based on the impedance at the low frequency. A reference value of the assessed amount of extracellular fluid in the tissues is preselected at the start of measurements. A correction value is determined based on the changes in blood amount in the volume at the current measurement time. A corrected assessment value is the determined. Using the corrected assessment value, the onset of water deficiency is determined.

Abstract: A method for measurements of parameters characterizing human motor activity provides registration of signals generated by load sensors mounted in shoe insoles, with each insole having at least two load sensors, one mounted near the heel, and the other near the toe of the foot. The specific type of motor activity is determined based on temporal correlation of load sensor signals from both insoles and values thereof. Person's weight, including additionally carried weight, is determined by summing up signal values from said load sensors, with the specific type of motor activity considered; thereafter, person's motor stress is determined based on specified type of motor activity and person's weight, including additionally carried weight. The method enables a real-time monitoring of motor stress of a person at different types of motor activity, e.g. running, walking at different pace, standing, with person's weight, including additionally carried weight, taken into consideration.

Abstract: A sensor unit for use in devices for simultaneous measurement of human tissue impedance and pressure to identifies human hemodynamic parameters. The sensor unit of the device attached to skin surface segment includes a base with a recess, in which a piezoelectric element of pressure sensor is installed. The unit also has a flexible membrane mounted on the base and overlapping said recess. First and second electrodes are attached to the outer surface of the membrane. The first electrode is mounted opposite the recess and is capable of moving together with the membrane. The second static electrode surrounds the first electrode. A central support is mounted between the first electrode and the piezoelectric element. Connected to the electrical outputs of said impedance measurement sensor, the first and second electrodes can contact with skin surface. At the same time, the operational stability and sensitivity of sensors are increased.

Abstract: A method for measuring parameters, such as human weight, together with additionally carried weight, in motion. The method provides registration of signals generated by load sensors disposed in shoe insoles; whereat each insole has at least two load sensors, with one mounted near the heel region and the other near the toe region of foot. The specific type of motor activity is determined based on temporal correlation of the load sensor signals from both insoles and values thereof. The person's weight, including additionally carried weight, is determined by summing up load sensor signals, for a specific type of motor activity. The invention provides for the measurement of person's weight, including additionally carried weight, in real time for different types of motor activity, such as running, walking at different pace, standing.

Abstract: A method for measurements of parameters characterizing human motor activity provides registration of signals generated by load sensors mounted in shoe insoles, with each insole having at least two load sensors, one mounted near the heel, and the other near the toe of the foot. The specific type of motor activity is determined based on temporal correlation of load sensor signals from both insoles and values thereof. Person's weight, including additionally carried weight, is determined by summing up signal values from said load sensors, with the specific type of motor activity considered; thereafter, person's motor stress is determined based on specified type of motor activity and person's weight, including additionally carried weight. The method enables a real-time monitoring of motor stress of a person at different types of motor activity, e.g. running, walking at different pace, standing, with person's weight, including additionally carried weight, taken into consideration.