Portable device, system and method for measuring electromyographic signals of a user

A portable device for measuring a plurality of electromyographic signals of a user, said portable device comprising:

• a first support layer comprising detection means including a plurality of electrodes configured to be arranged, in use, in contact with skin of the user on at least one muscle, or part thereof, and configured to acquire the plurality of electromyographic signals, said first support layer being incorporated in or attached to a wearable item of clothing including an armband, a strap for an upper or lower limb of a body of the user, an abdominal band, a trousers or a shirt;
• a plurality of second support layers mechanically and electrically attached in a detachable manner to the first support layer by means of electro-conductive couplings;
• a first master electronic unit;
• each second support layer of the plurality of second support layers including an electronic module that comprises:
• an amplification unit, a filtering unit and a multiplexing unit to condition the plurality of a electromyographic signals, an A/D converter to convert the plurality of electromyographic signals to a digital format, and a transmission unit to transmit the conditioned and digitized plurality of electromyographic signals to the first master electronic unit through a communication channel;
• the plurality of second support layers further being mechanically and electronically attached to each other, through electrical connectors and the communication channel, to exchange both analog and digitized information, and sharing the first master electronic unit;
• and
• the first master electronic unit is configured to control each electronic module of each second support layer of the plurality of second support layers and to transmit the conditioned and digitized plurality of electromyographic signals to a control unit for monitoring thereof.