Wristband type multimodal signal acquisition device

Ruiluowei S2Wristband type multimodal signal acquisition device：

In scientific research applications, the random acquisition of multimodal signals is crucial because it provides the foundation for complex modeling and cross modal analysis, and the richness of signals also determines the application boundaries of the equipment.

Physiological electrode strap, capturing precise signals from the inside of the wrist; Multi sensor fusion and complementarity are used to construct a multimodal and high-precision detection system, which can extract raw sensor data and more than ten digital biomarkers to meet various research needs. Pulse rate, pulse rate variability, blood oxygen, electrocardiogram, skin conductance, electromyography, acceleration, gyroscope, geomagnetic field, skin temperature, activity analysis, sleep analysis, wearing monitoring, environmental temperature, environmental humidity, air pressure, light intensity.

Signal acquisition device：

In scientific research scenarios, signal quality often takes priority over other indicators because it directly determines the effectiveness of subsequent analysis and modeling. Signal accuracy, integrity, and anti-interference ability are particularly important.

Pulse rate consistency:Ruiluo Wei ™ The Ralovi S2 pulse rate sensor has an effective measurement range of 10bpm~210bpm. Compared with standard heart rate devices such as Polar H10, the Ralovi ™ The dynamic pulse rate error of Ralovi S2 pulse rate sensor is 1.15bpm, with a relative error of 0.7%. The curves are basically coincident and have high consistency.

Consistency of skin conductance:The EDA signals collected by S2 device showed similar results to Embrace Plus in 55 subjects, with an error of no more than 0.5s in the temporal trend of skin conductance level (SCL). In terms of the number of skin conductance reactions (SCR), the EDA signal calculation results collected by S2 (18) and Embrace Plus (17) were basically consistent.

Consistency of pulse rate variability:In the emotional stress experiment, on Ruiluowei ™ The pulse rate variability collected by the Ralovi S2 device was compared with the Polar heart rate band (gold standard). This experiment also included a total of 55 participants, and the results showed that the temporal variation trends of the two devices were highly consistent when collecting the same event data. Further Pearson correlation analysis showed that the correlation coefficient between the two sets of data was 0.5215, indicating a good positive correlation.

Consistency of sleep staging:Ruiluo Wei ™ The Ralovi S2 has a built-in sleep analysis model that can quickly calculate sleep status in scenarios without network connection. The sleep staging results have achieved high consistency with the Philips Alice6 staging results in the hospital.

Compared with the clinical gold standard PSG measurement results, the accuracy of sleep and wake-up recognition reached 90%, and the consistency of the four stage results exceeded 80%.

Consistency of epidermal temperature:Ruiluo Wei ™ Comparing the temperature sensor of Ralovi S2 with standard equipment, the time-domain data curves of the two are basically consistent, and the measurement error meets the standard requirement of ± 0.1 ℃. It has stability and accuracy under different environmental temperatures and humidities, and can provide reliable basis for practical applications.

Long term reliable and stable signal acquisition and storage:

Ruiluo Wei ™ The Ralovi S2 research watch has reliable and stable signal acquisition and storage performance, which can work for a long time without losing data, which is particularly important for scientific research applications.

During a continuous 720 hour (30 day) offline storage test, Ruiluo Wei ™ The Ralovi S2 sensor data can be stored stably with a packet loss rate of less than 0.01%.

1Hz: heart rate, blood oxygen, epidermal temperature, environmental temperature and humidity, light intensity

4Hz: EDA skin conductance

25Hz：PPG_IR_RED

100Hz：PPG_Green、 Acceleration and angular velocity

200Hz: EMG muscle electricity

*Data analysis tools:

Humanized functions:

Offline mode application:

Offline mode refers to the watch working in a non real time data transmission state, triggering data collection upon detection of wear, and saving all data locally on the watch, suitable for long-term real-world data collection applications.

Under fully charged conditions, it can operate continuously for 30 hours

Built in 3GB storage, capable of continuous storage for 20 days (with all sensors turned on)

The battery life and storage resources can meet the needs of long-term data collection and storage in offline scenarios

Online mode application:

Online mode refers to the watch sending real-time collected data to the client through Bluetooth, without storing data locally. It is suitable for application scenarios that require real-time data and analysis.

Under typical working conditions (with all sensors collecting and storing data turned on), the watch can run continuously for 30 hours, with a 0-100 battery charge of 1.5 hours

Convenient, fast, and stable data export

Networking application:

Single person collection of multiple parts:

It can be fixed in specific positions on the body with customized straps, and real-time data can be transmitted online through Bluetooth gateway networking, or saved offline in each node's wristwatch for post-processing analysis.

Group collection:

Multiple people wear T2 watches simultaneously, and real-time data collection, uploading, and online analysis of each wearer are synchronized through Bluetooth gateway networking, suitable for observing and studying group behavior patterns.

Support open interfaces to quickly build digital applications:

Ruiluowei ™ Ralovi S2 watch as the core of the Corolla ™ The digital health platform supports application integration at different levels from watch Bluetooth protocol, mobile API, PC API, and center console. It is not only used for scientific research, but also helps users quickly build their own digital health application platform.

Ruiluowei S2Wristband type multimodal signal acquisition device：

Smooth intelligent experience paired with high-definition interface display: