Device of radioelectric signals transmitter and/or receiver type

Abstract

Radiofrequency device (30; 30'; 30''; 30''') controlling means for supplying at least one electrical load (14, 14') and comprising a radiofrequency unit (11) of radiofrequency signals transmitter and / or receiver type and connected by a first conductor (9b) to the AC mains (9), wherein the radiofrequency unit comprises a radiofrequency signal output and / or input (20) connected by an HF link (19) to a first terminal (21) of a tuning circuit (17; 17') of the radiofrequency device, the tuning circuit being: connected by a second terminal (22) to the first conductor, connected by a third terminal (23) to an electrical ground (GND) of the radiofrequency unit, furnished with means (L1, C1; L2, C3, C4) for blocking the conduction of radiofrequency signals on the first conductor between the second terminal and the third terminal, and traversed between the second terminal and the third terminal by the AC current (I-ACT) flowing in the first conductor and supplying said electrical load.

Description

technical field [0001] The invention relates to the following fields: remote control devices using radio frequency, that is to say via radio signals; actuators for controlling electrical loads in buildings for heating, visual or lighting comfort, for eye protection , used to close or protect a building or its environ. [0002] Such an actuator comprises a radio frequency receiver equipped with a receiving antenna, making it possible to increase its sensitivity and thus the transmission range between the radio frequency receiver and the mobile or stationary radio frequency transmitter. [0003] Receiving antennas are sensitive and fragile components. Furthermore, the actuator is usually placed in a metal housing, which necessitates placing the antenna outside the housing in order to maintain sensitivity. [0004] It has been conceived for a long time to use the power supply cable of the actuator to accommodate a part of the antenna, either by direct or partial coupling, or to...

AI Technical Summary

Problems solved by technology

[0014] For example, the good sensitivity during simple listening to the receiver deteriorates when the actuator is activated after receiving a command

[0015] Such an effect cannot simply be attributed to disturbances caused by the actuator's electric motor while it is running

From this it follows that the sensitivity of the motion command receiver deteriorates when the actuator is activated: therefore, there is a risk that priority commands such as emergency stop commands are less well received than commands for setting to motion

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