Wearable device and signal acquisition method thereof

Abstract

The invention discloses wearable equipment and a signal acquisition method thereof. The signal acquisition method comprises the following steps: before the wearable equipment is worn on a human body for human body signal acquisition, starting a signal generation circuit to generate a synchronous signal; transmitting the synchronizing signal to the surface of a human body through the electrode; and after the synchronization signal is transmitted, generating corresponding timestamp information for a human body signal collected by the wearable device according to a clock of the wearable device. According to the technical scheme provided by the invention, the timestamp information can be calibrated based on the synchronization signal, so that an upper application can realize accurate alignment of human body signals of different wearable devices based on the calibrated timestamp information.

Description

technical field [0001] The present application relates to the technical field of wearable devices, in particular to a wearable device and a signal collection method thereof. Background technique [0002] With the development of mobile Internet technology, a large number of technologies that use mobile Internet technology for human body monitoring have emerged to provide users with physical status assessment services. When evaluating the body state with the help of signal collectors, since most signal collectors detect the human body signal of a single part, in practical applications, it is mostly necessary to use multiple signal collectors to collect human body signals from various parts. For example, the forearm signal collected by the collector for collecting forearm EMG (electromyography, myoelectric wave) signal includes movement information of the hand and wrist but does not contain the forearm movement information, and the collector for collecting the upper arm EMG sig...

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Problems solved by technology

[0003] In related technologies, long wires are used to connect each electrode to a central collection node, but too long electrode wires will introduce environmental interference factors, such as the introduction of power frequency interference, and because there are too many and too long wire harnesses, It is quite inconvenient to wear and operate

[0004] With the development of wearable technology, wireless collection nodes are used instead of long wires to connect central collection nodes. Wireless collection nodes solve the constraint problem of wiring harnesses, but the time stamp information between different wireless collection nodes cannot be completely synchronized. , the air calibration clock cannot achieve millisecond or even microsecond accuracy; after the business layer obtains the human body signals of each wireless collection node, due to the different reference clocks, it is impossible to achieve accurate alignment of human body signals between wireless collection nodes in time. As a result, it is impossible to accurately describe the correlation between the signals of various parts of the human body

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