Abstract: Some embodiments are related to a system for controlling access of a user to a set of equipment of a secure site, including: a communicating portable device associated with the user and containing an identifier of the latter, a biometric activator allowing the opening of a temporary session for the user by means of a biometric authentication, the user being identified by his communicating portable device, and in which the equipment is adapted so as to be usable only in the event of authorization of access by the user after verification of the opening of the temporary session; the user being identified by the equipment by virtue of his communicating portable device.

Abstract: Disclosed is a system for determining a level of nuisance generated by an industrial installation, including at least one aerial drone, the aerial drone being controllable to move to a measurement point above the industrial installation, and to determine, at the measurement point, by way of at least one sensor fitted to the aerial drone, at least one level of a quantity generating the nuisance, the system furthermore including a treatment unit configured to determine the nuisance level on the basis of the level of the sensed quantity

Abstract: The invention relates to a reverse-osmosis water desalination plant comprising: a reverse-osmosis membrane unit (TP); at least one high-pressure pump (HP); a pressure-exchange-type energy collector (SRE) capable of transferring pressure from the concentrate leaving the membrane unit to a portion of the water to be treated; sensors for various operating parameters, in particular pressure, flow rate, temperature and salinity level, said sensors being provided at suitable locations; and control loops so that the various adjustable elements are maintained at a setpoint value. The plant also includes a secondary control system (D) comprising calculation means (26) programmed to determine, on the basis of the operating conditions of the plant supplied by the sensors, a combination of setpoint values for the flow rate of the high-pressure pump, the mixing ratio of the energy collector and the conversion ratio, which combination minimizes the energy consumption of the high-pressure pump.

Abstract: The invention relates to a reverse-osmosis water desalination plant comprising: a reverse-osmosis membrane unit (TP); at least one high-pressure pump (HP); a pressure-exchange-type energy collector (SRE) capable of transferring pressure from the concentrate leaving the membrane unit to a portion of the water to be treated; sensors for various operating parameters, in particular pressure, flow rate, temperature and salinity level, said sensors being provided at suitable locations; and control loops so that the various adjustable elements are maintained at a setpoint value. The plant also includes a secondary control system (D) comprising calculation means (26) programmed to determine, on the basis of the operating conditions of the plant supplied by the sensors, a combination of setpoint values for the flow rate of the high-pressure pump, the mixing ratio of the energy collector and the conversion ratio, which combination minimizes the energy consumption of the high-pressure pump.