Boots – shoes – and leggings
Patent
1986-01-10
1988-10-11
Lall, Parshotam S.
Boots, shoes, and leggings
307 86, 361334, 361346, H02B 102
Patent
active
047776072
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an electronic interface device for remote control and monitoring of a power distribution panelboard coupled with a management system.
This device is primarily but not exclusively applicable to panelboards referred to as low-voltage draw-out panelboards comprising several power distribution assemblies each provided with a plurality of out-going power lines.
In the known technique, these power distribution panelboards are coupled with the management system such as a centralized management unit, a computer, a calculator, a programmable automatic control unit or the like by means of a large number of electric conductors.
The aim of the present invention is to simplify the installation of these known devices by considerably limiting the number of electric conductors which serve to interconnect the panelboards and the management system, thereby achieving enhanced reliability of these devices.
In accordance with the invention, the electronic interface device for remote control and monitoring of a power distribution panelboard coupled with a management system and comprising a plurality of power distribution assemblies each having a plurality of outgoing power lines is characterized in that it comprises:
in respect of each outgoing power line, a local control unit connected to a remote control unit;
a central unit in respect of each distribution assembly;
that each local control unit comprises means for addressing "on/off" signaling and control data to the remote control unit;
that each remote control unit comprises a microprocessor for converting the "on/off" data supplied by the local control unit into data which are compatible with the central unit;
that each remote control unit is connected to the central unit by means of a standardized link of the four-conductor series bus type and
that the central unit is provided with at least one basic control circuit comprising a microprocessor for data exchange between each remote control unit and the management system by means of a standardized four-conductor series link or current loop.
In this device, the local control unit addresses on/off signaling and/or control data to the remote control unit and this latter converts these data into data which are compatible with the central unit, said central unit being linked with the external management system by means of a standardized four-conductor series link or current loop.
The link just mentioned thus replaces the multiplicity of conductors employed in known devices and therefore makes it possible to achieve considerable simplification of the electric wiring as well as enhanced safety and reliability of operation of the device.
In an advantageous embodiment of the invention, the basic control circuit is also connected by means of a standardized four-conductor link to a remote diagnostic testing and maintenance equipment unit for directly addressing data to said control unit.
Preferably, the central unit comprises a second control circuit connected to a second management unit by means of a standardized four-conductor series link, a third control circuit connected by means of a standardized four-conductor link, to a printer and a keyboard with display screen for recording the states of the device and introducing data, a circuit having analog inputs and connected to the microprocessor of the basic circuit by means of a parallel bus for measuring parameters such as power, current intensity and frequency, and a circuit having analog outputs for transmitting analog data by means of a standardized link to remote equipment such as instruments for measuring the parameters aforesaid, and circuits for managing with respect to each other the "on/off" data processed by the central control unit, each of these circuits being provided with a plurality of "on/off" inputs and outputs connected to external sensors or actuators.
In a preferred embodiment of the invention, each remote control unit comprises means for converting the "on/off" data received from the local control unit into eight-character message
REFERENCES:
patent: 3842249 (1974-10-01), Geyer et al.
patent: 4216528 (1980-08-01), Robertson
patent: 4389706 (1983-06-01), Gomola et al.
"Becos 30 Software System for Large Dispatching Centres", Brown Boveri Review, vol. 66, by R. Frost et al., Mar. 1979, pp. 188-196.
"Le Materiel et le Logiciel des Bureaux Centraux de Conduite d'E.D.F.", Revue Generale De L'Electricite, vol. 85, No. 1, by J. Darmon et al., Jan. 1976, pp. 46-51.
Maury Georges
Menou Georges
Lall Parshotam S.
Mattson Brian M.
Spie Batignolles
LandOfFree
Interface device for control and monitoring of distribution pane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interface device for control and monitoring of distribution pane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interface device for control and monitoring of distribution pane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1962000