An anti-collision method, adapted to prevent the accidental collision between at least one human operator and at least one vehicle within a target work volume, comprising the following steps: - storing information on at least the current position of the at least one vehicle within the target work volume; - scanning the target work volume by means of a radiofrequency radiation signal, so as to detect the presence of the at least one human operator within the target work volume - determining the current position of the at least one human operator within the target work volume; - comparing the current position of the human operator with the information on the current position of the at least one vehicle, and - if the current position of the at least one human operator at least partially overlaps the current position of the at least one vehicle, - then the method comprising the further step of activating at least one safety device, characterized in that the step of determining the current position of the at least one human operator within the target work volume is performed by: - avoiding to use an identification tag on said at least one human operator, - employing a plurality of sensor nodes, arranged to illuminate the target work volume with the radiofrequency radiation, wherein each sensor node of said plurality of sensor nodes comprises a transmitting unit, adapted to transmit the radiofrequency radiation towards said target work volume, and a receiving unit, adapted to detect the echo signals reflected by items (4, 5) of the target work volume, - receiving by means of the respective receiving unit for each sensor node a signal which contains information on the presence of a human operator in the target work volume; - triangulating the signals originating from the plurality of receiving units facing the target work volume; and - with the cooperation of each sensor node with a first processor, detecting on the reflected echo signal, by means of the respective receiving unit, the presence of a phase modulation typical of vital signals of the at least one human operator. - storing information on at least the current position of the at least one vehicle within the target work volume; - scanning the target work volume by means of a radiofrequency radiation signal, so as to detect the presence of the at least one human operator within the target work volume - determining the current position of the at least one human operator within the target work volume; - comparing the current position of the human operator with the information on the current position of the at least one vehicle, and - if the current position of the at least one human operator at least partially overlaps the current position of the at least one vehicle, - then the method comprising the further step of activating at least one safety device, - avoiding to use an identification tag on said at least one human operator, - employing a plurality of sensor nodes, arranged to illuminate the target work volume with the radiofrequency radiation, wherein each sensor node of said plurality of sensor nodes comprises a transmitting unit, adapted to transmit the radiofrequency radiation towards said target work volume, and a receiving unit, adapted to detect the echo signals reflected by items (4, 5) of the target work volume, - receiving by means of the respective receiving unit for each sensor node a signal which contains information on the presence of a human operator in the target work volume; - triangulating the signals originating from the plurality of receiving units facing the target work volume; and - with the cooperation of each sensor node with a first processor, detecting on the reflected echo signal, by means of the respective receiving unit, the presence of a phase modulation typical of vital signals of the at least one human operator.