Abstract: A method assesses the rotational speed of a machine, and more particularly the rotational speed of a rotating equipment prime mover controlled by a governor. Such machines include turbo machinery and relate to a measurement device for measuring speed. The method measures a number of pulses during a measurement interval, determines a portion of a pulse pattern, determines an integration period, and calculates the rotational speed based on the portion of the pulse pattern.

Abstract: A method assesses the rotational speed of a machine, and more particularly the rotational speed of a rotating equipment prime mover controlled by a governor. Such machines include turbo machinery and relate to a measurement device for measuring speed. The method measures a number of pulses during a measurement interval, determines a portion of a pulse pattern, determines an integration period, and calculates the rotational speed based on the portion of the pulse pattern.

Abstract: A display has a graphics processor that extracts from image memory just rows that have non-zero luminance information items for the colour under consideration. For each row to be written, the processor sends to a set of N sampling and conversion circuits, at high frequency, a pattern representing the rows to be written, in the form of a succession of N bits. The N samplers successively sample these bits during the succession, to sample and block the bit of rank i in the sampling circuit of rank i, and produce a pattern of N control voltages VGon or VGoff on the rows as a function of the pattern of the received succession, while the graphics processor applies to the columns the luminance data to be written. The operation is repeated solely for the rows that have a luminance information item to be written in the colour under consideration.

Abstract: The invention relates to an input module (32) for a programmable logic controller able to be connected to a plurality of elements of an automated chain, the module (32) comprising: inputs (32A, 32B), each input (32A, 32B) being able to receive the signal from at least one element of the plurality of elements, interfaces (40A, 40B), each interface (40A, 40B) being associated with a single input and comprising at least one output (40A6, 40B6) able to operate in three different states, a test block (42), and a processing sub-module (24) able to compare the state of the output (40A6, 40B6) of each interface (40A, 40B) with the state imposed by the test block (42) and to deduce an operating anomaly of the module (32, 34) therefrom.

Abstract: The invention relates to an input module (32) for a programmable logic controller able to be connected to a plurality of elements of an automated chain, the module (32) comprising: inputs (32A, 32B), each input (32A, 32B) being able to receive the signal from at least one element of the plurality of elements, interfaces (40A, 40B), each interface (40A, 40B) being associated with a single input and comprising at least one output (40A6, 40B6) able to operate in three different states, a test block (42), and a processing sub-module (24) able to compare the state of the output (40A6, 40B6) of each interface (40A, 40B) with the state imposed by the test block (42) and to deduce an operating anomaly of the module (32, 34) therefrom.

Abstract: A display has a graphics processor that extracts from image memory just rows that have non-zero luminance information items for the colour under consideration. For each row to be written, the processor sends to a set of N sampling and conversion circuits, at high frequency, a pattern representing the rows to be written, in the form of a succession of N bits. The N samplers successively sample these bits during the succession, to sample and block the bit of rank i in the sampling circuit of rank i, and produce a pattern of N control voltages VGon or VGoff on the rows as a function of the pattern of the received succession, while the graphics processor applies to the columns the luminance data to be written. The operation is repeated solely for the rows that have a luminance information item to be written in the colour under consideration.

Abstract: A method includes electing an item of active master equipment from two redundant primary and secondary master items of equipment (10, 20), the primary and secondary master items of equipment (10, 20) being directly connected to a fieldbus (1) and linked together by a terminal cable (30) and each having an active operating mode and a standby mode. Each of the primary and secondary master items of equipment (10, 20) also has one and the same state machine (12, 22) for designating one of the primary and secondary master items of equipment (10, 20) as the active master item of equipment, and the terminal cable (30) used for establishing a directional relation of the primary master item of equipment (10, 20) to the secondary master item of equipment (10, 20).

Abstract: An electric control and protection system for an output channel of automation equipment, the output channel being capable of controlling an electrical load as a function of a control signal from the automation equipment, the control and protection system including: a device that switches the electrical load including an MOS switching transistor, a source of the MOS switching transistor being connected to a positive voltage terminal via a resistor and a drain of the MOS switching transistor being connected to the electrical load, the MOS switching transistor being switchable between an on-state in which the electrical load is connected to the resistor and an off-state.

Abstract: The invention relates to an electronic control and protection system for an output channel of automation equipment. It comprises: i) a device for switching (10) an electrical load (C) comprising an MOS switching transistor (T5), the source of which is connected to a positive voltage terminal (P) via a resistor (R5) and the drain of which is connected to the load (C), the transistor (T5) being switchable between an on-state in which the load (C) is connected to said resistor (R5) and an off-state; ii) a limiting device (20) limiting the voltage at the terminals of said resistor (R5) to a predetermined maximum value (VR5max); iii) an output channel cut-off device (30) able to switch the transistor (T5) to the off-state when the current flowing through said resistor (R5) passes a predetermined threshold for a predetermined duration.

Abstract: Output control circuit for a programmable logic controller, comprising a control unit (13) and a circuit (14) for controlling and checking output channels (11), including a deserializing section (16). The output circuit receives descending frames (T1) and ascending frames (T2) and, according to its configuration, it returns ascending frames (T3) to the control unit produced from frames (T1) and/or (T2).

Abstract: Output control circuit for a programmable logic controller, comprising a control unit (13) and a circuit (14) for controlling and checking output channels (11), including a deserializing section (16). The output circuit receives descending frames (T1) and ascending frames (T2) and, according to its configuration, it returns ascending frames (T3) to the control unit produced from frames (T1) and/or (T2).