A detection device , comprising: an infrared temperature sensor , configured to provide a temperature signal (S T ) associated with an heat emission of at least one individual within a monitored area; an electrostatic-charge-variation sensor , configured to provide a charge-variation signal (S Q ) indicative of a variation of electrostatic charge associated with said at least one individual; and a processing unit , coupled to the infrared temperature sensor and to the electrostatic-charge-variation sensor to receive the temperature signal (S T ) and the charge-variation signal (S Q ) and configured to carry out joint processing of said temperature signal (S T ) and charge-variation signal (S Q ) in order to detect the presence of said at least one individual within said monitored area, wherein said processing unit is configured to: process a temperature gradient (ΔT) associated with a variation of said temperature signal (S T ) with respect to a baseline value (BL) in order to detect a first presence indication; process a variation over time of said charge-variation signal (S Q ) in order to detect a second presence indication; and generate a presence signal (S P ) indicative of the presence of said at least one individual within said monitored area in the case of joint detection of said first and second presence indications in a same time interval; characterized in that said processing unit is configured to enable updating of the baseline value (BL) of said temperature signal (S T ) for automatically adapting the detection to conditions of ambient temperature of said monitored area, conditionally with respect to the processing of said charge-variation signal (S Q ), only in the case where processing of the charge-variation signal (S Q ) over time is indicative of the absence of individuals in the monitored area. an infrared temperature sensor , configured to provide a temperature signal (S T ) associated with an heat emission of at least one individual within a monitored area; an electrostatic-charge-variation sensor , configured to provide a charge-variation signal (S Q ) indicative of a variation of electrostatic charge associated with said at least one individual; and a processing unit , coupled to the infrared temperature sensor and to the electrostatic-charge-variation sensor to receive the temperature signal (S T ) and the charge-variation signal (S Q ) and configured to carry out joint processing of said temperature signal (S T ) and charge-variation signal (S Q ) in order to detect the presence of said at least one individual within said monitored area, wherein said processing unit is configured to: process a temperature gradient (ΔT) associated with a variation of said temperature signal (S T ) with respect to a baseline value (BL) in order to detect a first presence indication; process a variation over time of said charge-variation signal (S Q ) in order to detect a second presence indication; and generate a presence signal (S P ) indicative of the presence of said at least one individual within said monitored area in the case of joint detection of said first and second presence indications in a same time interval; characterized in that said processing unit is configured to enable updating of the baseline value (BL) of said temperature signal (S T ) for automatically adapting the detection to conditions of ambient temperature of said monitored area, conditionally with respect to the processing of said charge-variation signal (S Q ), only in the case where processing of the charge-variation signal (S Q ) over time is indicative of the absence of individuals in the monitored area. <EOS>