An electronic system for foetal surveillance includes at least two ultrasound sensors to emit and receive ultrasound waves either simultaneously, or simultaneously by groups, or sequentially. The ultrasound sensors configured to be positioned on at least one maternal abdominal portion to cover the foetal cardiac structure in movement and carry out measurements of foetal cardiac frequency. The distance between two ultrasound sensors is maintained by a link. A controller controls the ultrasound sensors with a piece of information to control the ultrasound waves sent to at least one ultrasound sensor. A processor to process the ultrasound signals to continuously estimate the position of the heart, the foetal cardiac rhythm and the foetal movements of one or more foetuses on the basis of the signal or signals received from the ultrasound sensors.
