Abstract:
Audio Frequency Load Control (AFLC) signal processing electronics are provided, which added to a power factor correction (PFC) unit allowing the AFLC system to operate without the need of large and heavy passive bypass or blocking filters at the PFC installations. The AFLC signal processing electronics comprise a first group of additional electronics tuned to the AFLC frequency for detecting the AFLC carrier signal and a second group of additional electronics for driving an AFLC impedance switch (306) that is connected in parallel with an AFLC impedance (305). The AFLC impedance (305) is connected in series with the PFC capacitors (304), and is sufficiently large to offer significant impedance in series with the PFC capacitors (304) that allow the AFLC signal to bypass the PFC unit.
Abstract:
The invention relates to a weighting filter to be used in a device for transmitting and/or receiving an analog signal, capable of transmitting and/or receiving said analog signal in a predetermined frequency band consisting of two adjacent sub-bands, referred to as first and second sub-bands. According to the invention, such a weighting filter includes: a first arm (41) including a means for attenuating said analog signal; a second arm (42) including a means for filtering said analog signal, said filtering means having a bandwidth corresponding to said first sub-band or to said second sub-band; and a means (43) for combining signals from said first and second arms.
Abstract:
A power unit includes an AC/DC converter for converting VAC input to DC, a zero cross unit for modulating the AC/DC converter output to facilitate zero crossing detection based on the output, and a high pass filter (HPF) for filtering data signals, where the data signals are transmitted and received on the same medium from which the VAC input is received. A method for providing power and data signals from a single powerline source, including receiving incoming VAC in an external power unit, converting the incoming VAC to DC, modulating the DC in accordance with zero crossings from the incoming VAC, filtering the VAC to isolate high frequency data signals, where the data signals are transmitted and received on a same medium from which the incoming VAC is received, and providing the DC, modulated DC, and data signals to an embedded processing unit capable of processing the data signals.
Abstract:
Dispositif comprenant un boîtier (1) contenant une unité centrale (2) électronique et un module d'alimentation (4) relié à l'unité centrale, le dispositif comprenant également un bloc d'alimentation externe (7) relié au module par un câble électrique (10) et pourvu d'un organe de connexion (9, 11) à un réseau d'alimentation (100) fournissant un courant d'alimentation alternatif et un signal de données superposé et d'un convertisseur (12) pour transformer le courant d'alimentation, le boîtier comprenant un module de transmission (3) de données par courant porteur, le convertisseur étant relié à l'organe de connexion (9, 11) et au câble électrique (10) par un premier organe d'aiguillage (13) qui extrait et dérive le signal de données par rapport au convertisseur, et les modules étant reliés au câble électrique par un deuxième organe d'aiguillage (13) pour séparer le courant d' alimentation transformé et le signal de données et amener le courant d'alimentation au module d'alimentation et le signal de données au module de transmission.
Abstract:
L'invention concerne selon un premier aspect à un dispositif formant contrôleur central (C) destiné à être relié à un périphérique distant (P) par l'intermédiaire d'une ligne électrique de transmission de données et d'alimentation (L), comprenant un émetteur de puissance (1 ) et un filtre passe-bas (MD-L C , C C_BF ) agencé entre l'émetteur de puissance et la ligne électrique, ainsi que des moyens d'émission-réception de données (3) en bande de base et un filtre passe-haut (MD-L C , C C_HF ) agencé entre les moyens d'émission-réception de données et la ligne électrique, la ligne électrique étant de la sorte mutualisée pour la transmission de puissance en basse fréquence du contrôleur central vers le périphérique distant et pour la transmission bidirectionnelle simultanée de données en bande de base en haute fréquence entre le contrôleur central et le périphérique distant. L'invention concerne également un périphérique distant (P) ainsi que le système comprenant un contrôleur central relié à un périphérique distant par une ligne électrique mutualisée pour la transmission de puissance et de données bidirectionnelles en simultané.
Abstract:
The invention relates to a testing installation, designed to provide a building with accommodation and a testing laboratory. The accommodation and the laboratory are provided with electricity via separate electrical supplies. The accommodation and the building are connected by sets of channels passing through a foundation block for the building and opening out on cable runs in the vicinity of and facing the testing laboratory. It can be shown that the above arrangement permits the placement in said channels and said cable runs, connections for connecting measuring devices to measurement processing devices situated in the testing laboratory. Said connections are thus always correctly placed in the same location and do not interfere with the measurement. The system efficiency may be increased wherein a testing bank is independently supplied with an electric perturbation signal previously measured in the accommodation.
Abstract:
A power line communication (PLC) bridge circuit consistent with certain embodiments has a first coupler that couples data signals to and from the first power line circuit and a second coupler that couples data signals to and from the second power line circuit. The first and second power line circuits are fed AC power from separate legs of a distribution transformer, and share a single neutral connection. A first communicati~n transceiver is connected to the first coupler for transferring data signals to and from the first coupler. A second communication transceiver is connected to the second coupler for transferring data signals to and from the second coupler. A controller examines data signals from the first transceiver and determines if the data is destined for the second transceiver, wherein data that is not destined for the second transceiver is considered local data.