Abstract: A display method displays at least one matrix code on a screen of an electronic display device, to send data to electronic equipment including a mechanism reading the matrix code. The display device includes the screen and a mechanism displaying information on the screen. The display method includes: generating at least one two-dimensional matrix code from data to be sent; displaying the matrix code on the screen, matrix codes being displayed successively when plural matrix codes are generated; partitioning a primary image corresponding to a generated matrix code into at least two secondary images, dimensions of the primary image being equal to dimensions of the matrix code and dimensions of the secondary image being smaller than or equal to resolution of the screen, the corresponding matrix code being displayed as secondary images during the display, and the secondary images being displayed successively on the screen.

Abstract: A display method displays at least one matrix code on a screen of an electronic display device, to send data to electronic equipment including a mechanism reading the matrix code. The display device includes the screen and a mechanism displaying information on the screen. The display method includes: generating at least one two-dimensional matrix code from data to be sent; displaying the matrix code on the screen, matrix codes being displayed successively when plural matrix codes are generated; partitioning a primary image corresponding to a generated matrix code into at least two secondary images, dimensions of the primary image being equal to dimensions of the matrix code and dimensions of the secondary image being smaller than or equal to resolution of the screen, the corresponding matrix code being displayed as secondary images during the display, and the secondary images being displayed successively on the screen.

Abstract: The invention relates to a method and a system for controlling a centrifugal pump (1) actuated by an electric motor (2). The control method comprises: a first step of selecting a speed and of controlling the variable speed drive (3) in order to apply said speed to the electric motor (2), a second step of controlling the solenoid valve (6) over the whole of its operating range at said selected speed, a third step of measuring the pressure and the flow rate of the fluid flowing in the pumping circuit and of measuring the electric power supplied to the motor for each operating point of the solenoid valve (6), a fourth step of determining, for said selected speed, the pressure curve as a function of the flow rate and the curve of the power supplied as a function of the flow rate.