A transparent device with bio-signal acquisition and feedback capabilities is provided, and includes a base that includes at least one actuator, a transparent container connected to the base, first and second electrodes disposed on the base, a body temperature sensor, a photoplethysmography (PPG) sensor module, and a bio-signal acquisition module that has an electrocardiographic (ECG or EKG) sensor function and acquires an ECG signal, a PPG signal, and a body temperature signal of the user. The bio-signal acquisition module determines physiological indices by using a preset algorithm and controls the at least one actuator to provide corresponding visual or auditory feedbacks in real time according to the physiological indices and an extended cardiac index of the user.

A transparent device with bio-signal acquisition and feedback capabilities is provided, and includes a base that includes at least one actuator, a transparent container connected to the base, first and second electrodes disposed on the base, a body temperature sensor, a photoplethysmography (PPG) sensor module, and a bio-signal acquisition module that has an electrocardiographic (ECG or EKG) sensor function and acquires an ECG signal, a PPG signal, and a body temperature signal of the user. The bio-signal acquisition module determines physiological indices by using a preset algorithm and controls the at least one actuator to provide corresponding visual or auditory feedbacks in real time according to the physiological indices and an extended cardiac index of the user.

A current sensor may take measurements of electrical currents that flow between two limbs of a patient through at least a portion of the patient's torso. The current measurements may be taken during a single diagnostic session while the patient holds a ground electrode in a hand of one limb and a probe electrode is sequentially placed at different locations on the distal portions of other limbs. Each of the measurement locations may be an acupuncture point. An electrical current state for the diagnostic session may be calculated. This state may consist of current ranges for one or more electrical currents that are measured during the session. A lookup table may be employed to determine one or more medical conditions that are indicated by the current state. Alternatively, a trained machine learning model may predict, based on the measured currents, one or more medical conditions.

A cover-type electronic device includes a cover-type housing, an electrode set including a plurality of electrodes disposed on an exterior surface of the housing, and a printed circuit board electrically connected to the plurality of electrodes. A driving circuit in the printed circuit board is configured to acquire sensing information, and identify a user's gripping posture, which matches one of a plurality of gripping postures for measurement of designated biometric data, based on the sensing information. The driving circuit identifies information corresponding to a contact impedance difference between both hands of the user from a biosignal detected through the electrode set, and switches a connection state of the electrode set, based on the corresponding information such that the user's biometric data is measured in the switched state.

Disclosed are absolute isolated light path structure, and a seat ring and a toilet seat using the absolute isolated light path structure. The absolute isolated light path structure comprises a light blocking plate, and a light emitting device and a light receiving device separated by the light blocking plate, the light blocking plate is configured for blocking light propagation between the light emitting device and the light receiving device, thereby avoiding the interference from the light emitted by the light emitting device to the light receiving device.

Disclosed are absolute isolated light path structure, and a seat ring and a toilet seat using the absolute isolated light path structure. The absolute isolated light path structure comprises a light blocking plate, and a light emitting device and a light receiving device separated by the light blocking plate, the light blocking plate is configured for blocking light propagation between the light emitting device and the light receiving device, thereby avoiding the interference from the light emitted by the light emitting device to the light receiving device.

A weak current signal acquisition circuit, and a seat (10) and a seat cover (100) having the circuit. The weak current signal acquisition circuit uses two signal acquisition units as front input electrodes of an amplification circuit, and uses an in-phase differential input mode, so that the ratio of amplitudes of a differential mode signal sent to a subsequent-stage operational amplifier to a common mode signal is improved, thereby achieving the purpose of improving the signal-to-noise ratio of a weak current signal extracted by a signal acquisition unit. When people use a seat cover (100) in which a weak current signal acquisition circuit is mounted, thighs are in contact with a signal acquisition unit provided on the seat (10), such that the weak current signal acquisition circuit can acquire a human body's electrocardiosignal more effectively.

An electrocardiographic detection device for a vehicle includes: a steering wheel electrode provided at a lower layer of a covering material that covers a surface of a steering wheel; a steering wheel electrode provided at a lower layer of the covering material of the steering wheel and an insulating material of a predetermined thickness; a waveform generator detecting a differential voltage between the steering wheel electrode and a ground region; a waveform generator detecting a differential voltage between the steering wheel electrode and a ground region; and a signal processing section that generates an electrocardiographic signal on the basis of the differential voltage detected at the waveform generator and the differential voltage detected at the waveform generator.

An electrocardiographic detection device for a vehicle includes: a steering wheel electrode provided at a lower layer of a covering material that covers a surface of a steering wheel; a steering wheel electrode provided at a lower layer of the covering material of the steering wheel and an insulating material of a predetermined thickness; a waveform generator detecting a differential voltage between the steering wheel electrode and a ground region; a waveform generator detecting a differential voltage between the steering wheel electrode and a ground region; and a signal processing section that generates an electrocardiographic signal on the basis of the differential voltage detected at the waveform generator and the differential voltage detected at the waveform generator.

A grip-type electrocardiographic measuring device includes a main body portion that has a spheroid shape, a plate-shaped flange portion mounted on a side surface of the main body portion, a first electrocardiographic electrode disposed at a back surface side of the main body portion and making contact with one hand when the main body portion is gripped by the one hand, and a second electrocardiographic electrode disposed on a surface of the flange portion and making contact with a finger of the other hand when the flange portion is pinched by the other hand. The flange portion has flexibility and is bendable from a mounting portion on the main body portion.