2 results about "Free blood" patented technology

A system for measurement of non-invasive and calibration-free blood pressure (BP) is disclosed. The system comprises a measurement probe (302) which is in contact with a person's skin. The measurement probe (302) comprises a first array of sensors (302-1) and a second array of sensors (302-2). The first array of sensors (302-1) determines a force exerted on skin (304) and the second array of sensors (302-2) determines a compression-decompression characteristics of the arteries through skin. The force exerted on skin and the compression-decompression characteristics of the arteries are used to determine indices indicative of the material properties of the vessel. Based on the indices indicative of the material properties of the vessel, blood pressure and continuous transmural pressure waveform may be determined.

The embodiment of the application provides a kind of key and electronic equipment, belong to electronic technical field, the second shell of key can be pressed and move and rotate, when pressing second shell, elastic deformation piece occurs elastic deformation by second shell.Electronic device can be detected elastic deformation variable, obtain the first pressing force information on second shell, realize the quantitative detection of first pressing force.Using first pressing force information can meet the specific application scenario requirement of electronic device, such as in pressing, the physiological parameter information of pressing part can be detected, the physiological parameter information is the physiological parameter information of pressing part under extrusion force scene, combined with the physiological parameter information and first pressing force information, more accurate biological characteristic information can be obtained, and the accuracy of biological feature detection is improved.No need to additionally increase pressure device, high-precision biological feature detection can be realized, such as high-precision wristband-free blood pressure detection, which is beneficial to the miniaturization and convenience design of electronic device.