A vehicle security method includes: acquiring an input signal from a sensor unit equipped in a vehicle; setting a detection mode to a heart rate detection mode, in response to a security release operation being started, setting a radar sensor of the sensor unit to detect a target, and detecting heart rate information on the target; determining whether the heart rate information matches pre-stored heart rate information; setting the detection mode to a general detection mode, in response to the heart rate information matching the pre-stored heart rate information, measuring a distance, an azimuth, and/or an elevation angle between the vehicle and the target, and detecting body shape information of the target; determining whether the body shape information matches pre-stored body shape information; and releasing a security of a security device, in response to the body shape information matching the pre-stored body shape information.

An optical heart rate earphone includes a front housing, a circuit board assembly, a rear housing assembled to a rear end of the front housing, and a light pipe. The front housing has a sound tube. At least one portion of the sound tube forms at least one light transmission gap. The circuit board assembly includes a circuit board and at least one optical sensor. The at least one optical sensor is corresponding to the at least one light transmission gap. The light pipe has a circular base. At least one portion of a periphery of the base protrudes rearward to form at least one transmittance slice. The light pipe is assembled to the sound tube. The at least one transmittance slice is wedged in the at least one light transmission gap.

Techniques to determine depth for a number of wearable devices, which may be worn in layers are provided. A wearable device can receive measurements from sensors to include sensors from a number of other wearable devices. Based on the sensor measurements, the wearable device can determine a depth for the wearable devices. The depth can include an indication of which wearable device is closest to a user, which wearable device is closest to an external environment, or the like.

A non-contact blood vessel analyzer includes an image acquisition device and an image processing device. The image acquisition device acquires an image which is a moving image or successive still images of a blood vessel. The image processing device detects a beat and a thrill from temporal change of an index derived from brightness and/or chromaticity of the image.

A sensing component includes multiple piezoelectric pressure sensors. The piezoelectric pressure sensor includes a piezoelectric material layer, a thin film transistor array and an induced electrode. The piezoelectric material layer is configured to measure pulse at multiple positions to generate the corresponding multiple pulse signals. The thin film transistor array electrically coupled to the piezoelectric material layer includes multiple transistors. The transistor includes a first terminal, a second terminal and a control terminal. The first terminal is configured to receive one of the pulse signals. The second terminal coupled to a data line is configured to output a first sensing signal according to the one of the pulse signals. The control terminal is configured to receive a clock signal. The induced electrode coupled to the piezoelectric material layer is configured to receive another one of the pulse signals to output a second sensing signal.

Angiopoietin-like protein (ANGPTL)3/8 fusion proteins are disclosed. Nucleic acid constructs encoding ANGPTL3/8 fusion proteins also are disclosed. Methods of making and using the same also are disclosed, especially for generating antibodies against ANGPTL3 and/or ANGPTL8.

A system to measure intracardiac impedance includes implantable electrodes and a medical device. The electrodes sense electrical signals of a heart of a subject. The medical device includes a cardiac signal sensing circuit coupled to the implantable electrodes, an impedance measurement circuit coupled to the same or different implantable electrodes, and a controller circuit coupled to the cardiac signal sensing circuit and the impedance measurement circuit. The cardiac signal sensing circuit provides a sensed cardiac signal. The impedance measurement circuit senses intracardiac impedance between the electrodes to obtain an intracardiac impedance signal. The controller circuit determines cardiac cycles of the subject using the sensed cardiac signal, and detects tachyarrhythmia using cardiac-cycle to cardiac-cycle changes in a plurality of intracardiac impedance parameters obtained from the intracardiac impedance signal.

A high-frequency device that detects biological information related to heartbeat, respiration, and the like with high accuracy. A high-frequency device (1) includes a biological signal extracting unit (heartbeat signal extracting unit 53, respiration signal extracting unit 63) that extracts a biological signal representing a specific frequency component; and an autocorrelation function processing unit (heartbeat autocorrelation function processing unit 54, respiratory autocorrelation function processing unit 64) that determines periodicity of an autocorrelation function to calculate biological information.

A sensor unit, a biological information detection device, an electronic apparatus, a biological information detection method, and the like, capable of acquiring highly accurate pulse wave information on the basis of a plurality of signals having different characteristics. The sensor unit includes a first light emitting portion that emits light toward a subject, a second light emitting portion that emits light toward the subject, and a light receiving portion that receives light from the subject, in which, in a case where a height of a contact position or a contact region with the subject in a position or a region corresponding to the first light emitting portion is indicated by H1, and a height of a contact position or a contact region with the subject in a position or a region corresponding to the second light emitting portion is indicated by H2, a relationship of H1>H2 is satisfied.

A fault diagnosis method for a bio-signal sensor for the vehicle includes measuring a first bio-signal through the bio-signal sensor in response to a seating detecting signal, measuring a second bio-signal through the bio-signal sensor in response to input through an on-board interface, and determining whether the bio-signal sensor may have malfunctioned according to whether the second bio-signal includes a signal deviating from a range set in response to the first bio-signal.