An autonomous bioelectric physiological signal acquisition device comprises an electrode (3) acquiring an analog measurement signal, analog signal processing and analog-digital converter chips (9) filtering and converting the analog measurement signal, a wireless communication module (12), a microprocessor (13) controlling the wireless communication module and a battery (15).The device further comprises a microcontroller (10) and a temporary memory (11), and a first printed circuit board (5) and a second printed circuit board (6) thermally separated from each other.The device is such that the electrode (3), the analog signal processing and analog-digital converter chips (9), the microcontroller (10) and the temporary memory (11) are disposed on the first printed circuit board (5), and the wireless communication module (12) and the microprocessor (13) are disposed on the second printed circuit board (6).
