A temperature detection system (10) comprising a layer of spin cross-over material (11) in thermal contact with a target surface (12); at least one first light source (13) configured to provide a first and a second illumination (13a, 33a) of at least a first portion (12a) of the layer of spin cross-over material (11); at least one first light receiver (14) configured to capture first and second return light (14b, 34b) coming from the layer of spin cross-over material (11) and resulting respectively from the first and second illuminations; generate a first signal (S1) based on the first return light (14b); and generate a second signal (S2) based on the second return light (34b); a computation circuit (15, 17) configured to determine, based at least on a correlation between the first and second signals (S1, S2), a temperature of the layer of spin cross-over material (11).

An optical transmitter includes a light source and an adjustment structure. The light source is configured to output an original light spot, to transmit a test optical signal to a skin of a user. The adjustment structure is located on an output optical path of the test optical signal. A test optical signal transmitted from an original light spot center of the original light spot is a central light spot optical signal, and the adjustment structure is configured to scatter the central light spot optical signal in a direction away from the original light spot center, to convert the original light spot

The present disclosure relates to methods of collecting and testing bacteria containing samples from within the gastrointestinal (GI) tract of a subject. The methods may include disposing an ingestible device in the GI tract, collecting a bacteria-containing sample from the GI tract, selectively lysing eukaryotic cells in the sample by combining the sample with a dried reagent, exposing bacteria in the sample to resazurin in the ingestible device to produce resorufin, emitting light from the ingestible device, the emitted light being filtered through an optical filter to control for scatter so that the light interacts with the resorufin to produce fluorescence, and measuring a total fluorescence from the resorufin; or a rate of change of fluorescence from the resorufin as a function of time within the GI tract of the subject; and correlating the measured parameter to a number of viable bacterial cells in the sample.

A pulse oximetry system includes a wrist portion configured for placement on a wrist of a subject, the wrist portion having a first component and a second component configured to removably secure to one another. The wrist portion can include emitter(s) and detector(s) operably positioned by the wrist portion. In some implementations, the pulse oximetry system further includes a ring member configured to secure around the subject's finger and operably position emitter(s) and detector(s) and a cable connected to the wrist portion in electrical communication with the emitter(s) and the detector(s) of the ring member and configured to transmit the signal(s) from the detector(s) to the wrist portion. The system includes a battery and hardware processor(s) configured to receive and process signal(s) outputted by the detector(s) to determine physiological parameter(s) of the subject.

A method for estimating a metabolic rate of a user includes obtaining pulse oximetry data for the user for a period of time. The method includes determining a rate of decline in oxygen saturation of blood of the user that is associated with a breathing rate of the user for the period of time based, at least in part, on the pulse oximetry data. The method includes estimating the metabolic rate of the user for the period of time based, at least in part, on the rate of decline in the oxygen saturation of the blood that is associated with the breathing rate of the user. The method includes providing a notification indicative of the metabolic rate for the period of time.

Disclosed are a wearable multi-index integrated physiological intelligent sensor system and a physiological index monitoring method. The system includes a device body and an intelligent terminal. The device body is provided with a fixing piece, which is configured to fix the device body at a human ear; the device body is further provided with a collecting and processing assembly, which is in wireless communication connection with the intelligent terminal; the collecting and processing assembly collects a corresponding physiological index signal in response to a physiological index collection instruction sent by the intelligent terminal, and analyzes and processes the physiological index signal to obtain a corresponding physiological index data, and sends the physiological index data to the intelligent terminal; in which, the physiological index signal includes electrodermal signal, heart rate signal and blood oxygen signal; the intelligent terminal is configured to receive and display a physiological index data.

The embodiments of the present disclosure provides a device for determining muscle state based on electromyography signal and muscle oxygen saturation. The devices includes: a signal collection module, configured for collecting a human electromyography signal data; a light source detection module, configured for emitting light with different wavelengths; a photosensitive receiver module, configured for receiving light reflected by skin after the light emitted by the light source detection module irradiates the skin; a blood oxygen calculation module, configured for calculating the muscle oxygen saturation based on the light received by the photosensitive receiver module; and a data statistics module, configured for determining the muscle state based on the human electromyography signal data and the muscle oxygen saturation. In this way, an accurate detection of muscle state is realized.

Provided are a sensing device and a manufacturing method thereof. The sensing device includes a substrate, a red light chip, an infrared light chip, and a green light chip. The red light chip, the infrared light chip, and the green light chip are disposed on the front face of the substrate. Five front face pads are disposed on the front face of the substrate. Five back face pads are disposed on the back face of the substrate. The third back face pad is connected to the fourth back face pad by a conductive line. One of the five front face pads is electrically connected to a corresponding one of the five back face pads.

In some embodiments, a wound dressing includes at least one motion sensor for sensing a motion related parameter associated with motion of the wound dressing; and at least one further sensor for sensing a healing related parameter associated with wound healing at a region of tissue of a wound or proximate a wound covered by the wound dressing.

A sensor, such as a photoplethysmography sensor, for non-invasively monitoring a characteristic of an organism, such as a vital body sign. The sensor has multiple light sources disposed on a substrate and an array of optical probing channels for conveying light from the light sources to a probed region. Each detector pixel of an array of detector pixels receives light from a respective optical detection channel after interaction with a subregion of the probed region and spatial filtering, and generates a corresponding pixel signal. A processor derives a value of the vital body sign based at least upon the plurality of pixel signals