EP0880308A2 - Device for monitoring and managing lighting systems - Google Patents

Device for monitoring and managing lighting systems Download PDF

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Publication number
EP0880308A2
EP0880308A2 EP98201545A EP98201545A EP0880308A2 EP 0880308 A2 EP0880308 A2 EP 0880308A2 EP 98201545 A EP98201545 A EP 98201545A EP 98201545 A EP98201545 A EP 98201545A EP 0880308 A2 EP0880308 A2 EP 0880308A2
Authority
EP
European Patent Office
Prior art keywords
user item
measuring
microprocessor
feed
parameters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98201545A
Other languages
German (de)
French (fr)
Other versions
EP0880308B1 (en
EP0880308A3 (en
Inventor
Giorgio Reverberi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elettronica Reverberi Srl
Original Assignee
Giorgio Reverberi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Giorgio Reverberi filed Critical Giorgio Reverberi
Publication of EP0880308A2 publication Critical patent/EP0880308A2/en
Publication of EP0880308A3 publication Critical patent/EP0880308A3/en
Application granted granted Critical
Publication of EP0880308B1 publication Critical patent/EP0880308B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
    • H05B47/22—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel with communication between the lamps and a central unit

Definitions

  • This invention relates to the monitoring of electric lighting networks, and the management thereof.
  • Electric lighting networks and comparable systems are characterised by very wide-ranging and branched electricity distribution providing energy to each individual lamp or to each individual user item within such systems.
  • the state of the art currently comprises monitoring systems by which certain parameters signifying proper operation of the peripheral user items are obtained locally at each user item, and fed by a carrier wave system, via the cables powering the user items, to a central microprocessor programmed to detect discordances in the parameters and convert them into signals indicating the type of fault or abnormality of said peripheral units.
  • a further limitation of known systems is that they can be activated only when the user items are in operation.
  • the object of this invention is to remedy the deficiencies of known systems by means of a reliable, low-cost monitoring system of simple operation.
  • Figure 1 shows the scheme of an electric lighting upright forming part of the lighting system monitored by the invention.
  • Figure 2 shows the circuit block scheme of the transmission unit associated with the upright.
  • Figure 3 shows the circuit block diagram of the central control unit.
  • the figures show an upright 100 i carrying at its end a lamp 10 i , where i lies between 1 and n, for a lighting network comprising n uprights.
  • the lamp 10 i can be either of the mercury vapour type or of the sodium vapour type, in this latter case it being associated with a usual reactor 12 i and a suitable ignition system, not shown in the figure.
  • the power circuit of each individual lamp 10 i can also comprise a rephasing capacitor 13 i .
  • each lamp there is located a transmission unit 2 i , the block scheme of which is shown in Figure 2.
  • the transmission unit 2 i comprises a microprocessor 25 i , which in the illustrated example is a Texas Instruments microprocessor type TMS370C6C2 controlling a carrier-wave transmitter-receiver 26 i , which in the illustrated example is a National transceiver type LM1893.
  • a microprocessor 25 i which in the illustrated example is a Texas Instruments microprocessor type TMS370C6C2 controlling a carrier-wave transmitter-receiver 26 i , which in the illustrated example is a National transceiver type LM1893.
  • the microprocessor 25 i receives data regarding the line and lamp voltage and current, and regarding the power factor associated with the lamp 10 i , these data being measured by known devices positioned within the block 23 i connected to the lamp feed branch 41 i .
  • the microprocessor 25 i also controls the electromechanical or static relay represented by the block 24 i , which switches the lamp 10 i in or out.
  • the transmitter-receiver represented by the block 26 i sends/receives signals to/from the feed line via the module 21 i .
  • the block 22 i represents a carrier-wave blocking filter, the function of which is evident.
  • the central unit 3 comprises a central microprocessor 34, which in the illustrated example is an Intel microprocessor type 80C32, this being able to analyze and compare the data originating from the microprocessors 25 i .
  • the microprocessor 34 receives data from the carrier-wave transmitter-receiver 33 via the module 32, which is similar to the module 21 i .
  • the system operates as follows.
  • the central unit 3 firstly feeds the entire lighting network, with the electromechanical or static relays 24 i initially open.
  • each electromechanical or static relay 24 i in each upright 100 i is locally measured by the devices contained in the blocks 23 i .
  • microprocessor 34 of the central unit If the microprocessor 34 of the central unit encounters no abnormality, it feeds a signal to all the local microprocessors 25 i , which close the respective electromechanical or static relays 24 i , to cause the lamps to light simultaneously.
  • the central microprocessor 34 receives data regarding the current absorbed by each lamp and the power factor, from each peripheral microprocessor 25 i .
  • the local microprocessor 25 i can temporarily or definitively interrupt power to each individual lamp 10 i , to prevent its maloperation causing damage to the entire network.

Abstract

A device for monitoring and managing systems having a multiplicity of identical network user items, such as public lighting systems, comprises at each user item a local transmission unit composed of an element for measuring the feed parameters of the user item, a local microprocessor for processing said parameters, a transceiver coupled to said microprocessor and to the feed line of the user item via a carrier-wave module and a carrier-wave blocking filter, and a central processor which receives signals from each local microprocessor via the feed line, processes them and transmits signals to each local microprocessor, wherein the measuring element for the feed parameters of the user item is a device for measuring the line voltage and current intensity.

Description

This invention relates to the monitoring of electric lighting networks, and the management thereof.
Electric lighting networks and comparable systems are characterised by very wide-ranging and branched electricity distribution providing energy to each individual lamp or to each individual user item within such systems.
It is therefore very important to be able to monitor both the state of each individual lamp or generic peripheral user item, and the state of the entire network, in order to be able to program maintenance and prevent local faults or abnormalities progressing into irreparable damage to the entire network.
The state of the art currently comprises monitoring systems by which certain parameters signifying proper operation of the peripheral user items are obtained locally at each user item, and fed by a carrier wave system, via the cables powering the user items, to a central microprocessor programmed to detect discordances in the parameters and convert them into signals indicating the type of fault or abnormality of said peripheral units.
It is known for example from European Patent Application EP 0637195 to assume as an abnormality-signifying parameter the phase-displacement between the voltage and current fed to the user item concerned, and to statistically deduce the nature of the fault or abnormality from the measured phase-displacement.
However, beyond the limits deriving from attributing the nature of the fault to the statistical change in an abstract parameter, namely the phase difference between the current and the voltage, the known systems, and in particular the aforedescribed system, do not enable other interesting situations, such as current dispersions or illicit current withdrawal, to be identified.
A further limitation of known systems is that they can be activated only when the user items are in operation.
The object of this invention is to remedy the deficiencies of known systems by means of a reliable, low-cost monitoring system of simple operation.
This object is attained according to the invention by the systems characterised in the claims.
The operational and constructional characteristics of the invention will be more apparent from the detailed description of a possible application of the invention to a public lighting network, given hereinafter by way of non-limiting example with reference to the accompanying drawings.
Figure 1 shows the scheme of an electric lighting upright forming part of the lighting system monitored by the invention.
Figure 2 shows the circuit block scheme of the transmission unit associated with the upright.
Figure 3 shows the circuit block diagram of the central control unit.
The figures show an upright 100i carrying at its end a lamp 10i, where i lies between 1 and n, for a lighting network comprising n uprights.
The lamp 10i can be either of the mercury vapour type or of the sodium vapour type, in this latter case it being associated with a usual reactor 12i and a suitable ignition system, not shown in the figure.
The power circuit of each individual lamp 10i can also comprise a rephasing capacitor 13i.
Within the support upright of each lamp, according to the invention, there is located a transmission unit 2i, the block scheme of which is shown in Figure 2.
The transmission unit 2i comprises a microprocessor 25i, which in the illustrated example is a Texas Instruments microprocessor type TMS370C6C2 controlling a carrier-wave transmitter-receiver 26i, which in the illustrated example is a National transceiver type LM1893.
The microprocessor 25i receives data regarding the line and lamp voltage and current, and regarding the power factor associated with the lamp 10i, these data being measured by known devices positioned within the block 23i connected to the lamp feed branch 41i.
The microprocessor 25i also controls the electromechanical or static relay represented by the block 24i, which switches the lamp 10i in or out.
The transmitter-receiver represented by the block 26i sends/receives signals to/from the feed line via the module 21i.
The block 22i represents a carrier-wave blocking filter, the function of which is evident.
Via the branch 41i and the line 4 the carrier signals reach the central unit 3, the block scheme of which is shown in Figure 3.
The central unit 3 comprises a central microprocessor 34, which in the illustrated example is an Intel microprocessor type 80C32, this being able to analyze and compare the data originating from the microprocessors 25i.
The microprocessor 34 receives data from the carrier-wave transmitter-receiver 33 via the module 32, which is similar to the module 21i.
The system operates as follows.
The central unit 3 firstly feeds the entire lighting network, with the electromechanical or static relays 24i initially open.
In this situation the voltage present upstream of each electromechanical or static relay 24i in each upright 100i is locally measured by the devices contained in the blocks 23i.
Comparing the measured voltage with the theoretical or design voltage initially contained in the microprocessor 34, less load losses, enables operating abnormalities to be detected, such as line discontinuities, dispersions along the line, or unauthorized current withdrawals, also identifying the point along the line where the abnormalities occur.
If the microprocessor 34 of the central unit encounters no abnormality, it feeds a signal to all the local microprocessors 25i, which close the respective electromechanical or static relays 24i, to cause the lamps to light simultaneously.
It is apparent that this facility for line monitoring with the lamps unlit enables this monitoring to be programmed for very short intervals of several times a day, and hence the entire lighting network to be maintained constantly under control, to provide for the necessary repair and maintenance in good time before the moment for evening lighting of the lamps.
During the period in which the lamps are alight, the central microprocessor 34 receives data regarding the current absorbed by each lamp and the power factor, from each peripheral microprocessor 25i.
These data are compared with the data considered normal, to provide all the information concerning the regular operation of the lamp and its state of wear.
In the case of discrepancy the local microprocessor 25i can temporarily or definitively interrupt power to each individual lamp 10i, to prevent its maloperation causing damage to the entire network.

Claims (4)

  1. A device for monitoring and managing systems having a multiplicity of identical network user items, such as public lighting systems, comprising at each user item a local transmission unit composed of an element for measuring the feed parameters of the user item, a local microprocessor for processing said parameters, a transceiver coupled to said microprocessor and to the feed line of the user item via a carrier-wave module and a carrier-wave blocking filter, and a central processor which receives signals from each local microprocessor via the feed line, processes them and transmits signals to each local microprocessor, characterised in that the measuring element for the feed parameters of the user item is a device for measuring the line voltage and current intensity.
  2. A device as claimed in claim 1, characterised in that the measuring element for the user item feed parameters is a device for measuring the current intensity and the voltage at the user item.
  3. A device as claimed in claim 1, characterised in that each user item is connected to the line by an electromechanical or static relay controlled by the respective local microprocessor.
  4. A device as claimed in claim 3, characterised in that the electromechanical or static relay is positioned downstream of the voltage measuring device, to also enable the voltage to be measured when the user item is disconnected.
EP98201545A 1997-05-22 1998-05-08 Device for monitoring and managing lighting systems Revoked EP0880308B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97RE000033A IT1294432B1 (en) 1997-05-22 1997-05-22 DEVICE FOR THE CONTROL AND MANAGEMENT OF LIGHTING SYSTEMS.
ITRE970033 1997-05-22

Publications (3)

Publication Number Publication Date
EP0880308A2 true EP0880308A2 (en) 1998-11-25
EP0880308A3 EP0880308A3 (en) 1999-09-22
EP0880308B1 EP0880308B1 (en) 2003-09-03

Family

ID=11399043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98201545A Revoked EP0880308B1 (en) 1997-05-22 1998-05-08 Device for monitoring and managing lighting systems

Country Status (5)

Country Link
EP (1) EP0880308B1 (en)
AT (1) ATE249136T1 (en)
DE (1) DE69817673T2 (en)
ES (1) ES2206822T3 (en)
IT (1) IT1294432B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403357A (en) * 2003-06-25 2004-12-29 Lighthouse Data Man Ltd Monitoring system for public lighting
WO2006046264A1 (en) * 2004-10-25 2006-05-04 Silvano Varesi Device for managing and controlling power supply of an electric apparatus, particularly a gas lamp
EP1657967A1 (en) * 2004-11-12 2006-05-17 Koninklijke KPN N.V. A filter with a fuse, for use in a lamppost
US7761260B2 (en) 2005-09-12 2010-07-20 Abl Ip Holding Llc Light management system having networked intelligent luminaire managers with enhanced diagnostics capabilities
ITRN20100031A1 (en) * 2010-05-31 2010-08-30 Umpi R & D S R L ELECTRONIC EQUIPMENT FOR DISTANCE DETECTION OF FAULTS LOCATED IN DISCHARGE LAMPS AND ITS PROCEDURE
US7817063B2 (en) 2005-10-05 2010-10-19 Abl Ip Holding Llc Method and system for remotely monitoring and controlling field devices with a street lamp elevated mesh network
US8140276B2 (en) 2008-02-27 2012-03-20 Abl Ip Holding Llc System and method for streetlight monitoring diagnostics
CN105515615A (en) * 2016-01-12 2016-04-20 浙江共同电子科技有限公司 Power line carrier communication method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016086A1 (en) * 1991-03-08 1992-09-17 Mutual Systems Ltd. Monitoring apparatus and system
GB2284952A (en) * 1993-11-25 1995-06-21 Ampy Automation Digilog Remote control and monitoring of lighting
EP0746183A1 (en) * 1995-05-31 1996-12-04 S.A. Metas An electronic device for accurate identification at distance of malfunctions in lamps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016086A1 (en) * 1991-03-08 1992-09-17 Mutual Systems Ltd. Monitoring apparatus and system
GB2284952A (en) * 1993-11-25 1995-06-21 Ampy Automation Digilog Remote control and monitoring of lighting
EP0746183A1 (en) * 1995-05-31 1996-12-04 S.A. Metas An electronic device for accurate identification at distance of malfunctions in lamps

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403357A (en) * 2003-06-25 2004-12-29 Lighthouse Data Man Ltd Monitoring system for public lighting
WO2006046264A1 (en) * 2004-10-25 2006-05-04 Silvano Varesi Device for managing and controlling power supply of an electric apparatus, particularly a gas lamp
EP1657967A1 (en) * 2004-11-12 2006-05-17 Koninklijke KPN N.V. A filter with a fuse, for use in a lamppost
WO2006050986A1 (en) * 2004-11-12 2006-05-18 Koninklijke Kpn N.V. A filter with a fuse, for use in a lamppost
US7911359B2 (en) 2005-09-12 2011-03-22 Abl Ip Holding Llc Light management system having networked intelligent luminaire managers that support third-party applications
US7761260B2 (en) 2005-09-12 2010-07-20 Abl Ip Holding Llc Light management system having networked intelligent luminaire managers with enhanced diagnostics capabilities
US8010319B2 (en) 2005-09-12 2011-08-30 Abl Ip Holding Llc Light management system having networked intelligent luminaire managers
US7817063B2 (en) 2005-10-05 2010-10-19 Abl Ip Holding Llc Method and system for remotely monitoring and controlling field devices with a street lamp elevated mesh network
US8140276B2 (en) 2008-02-27 2012-03-20 Abl Ip Holding Llc System and method for streetlight monitoring diagnostics
US8442785B2 (en) 2008-02-27 2013-05-14 Abl Ip Holding Llc System and method for streetlight monitoring diagnostics
US8594976B2 (en) 2008-02-27 2013-11-26 Abl Ip Holding Llc System and method for streetlight monitoring diagnostics
ITRN20100031A1 (en) * 2010-05-31 2010-08-30 Umpi R & D S R L ELECTRONIC EQUIPMENT FOR DISTANCE DETECTION OF FAULTS LOCATED IN DISCHARGE LAMPS AND ITS PROCEDURE
CN105515615A (en) * 2016-01-12 2016-04-20 浙江共同电子科技有限公司 Power line carrier communication method

Also Published As

Publication number Publication date
EP0880308B1 (en) 2003-09-03
DE69817673T2 (en) 2004-07-08
EP0880308A3 (en) 1999-09-22
ATE249136T1 (en) 2003-09-15
IT1294432B1 (en) 1999-03-24
ITRE970033A1 (en) 1998-11-22
DE69817673D1 (en) 2003-10-09
ES2206822T3 (en) 2004-05-16

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