WO2005029832A1 - Systeme et dispositif d'alimentation a distance d'un equipement de traitement d'informations - Google Patents
Systeme et dispositif d'alimentation a distance d'un equipement de traitement d'informations Download PDFInfo
- Publication number
- WO2005029832A1 WO2005029832A1 PCT/FR2004/002290 FR2004002290W WO2005029832A1 WO 2005029832 A1 WO2005029832 A1 WO 2005029832A1 FR 2004002290 W FR2004002290 W FR 2004002290W WO 2005029832 A1 WO2005029832 A1 WO 2005029832A1
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- WO
- WIPO (PCT)
- Prior art keywords
- signal
- information
- mhd
- communication medium
- converter
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/008—Using DC/DC converters
Definitions
- the present invention relates to a remote power supply system for at least one information processing equipment having determined operating ranges of supply voltage and intensity and being connected, by a communication medium of variable length, to an element emitting at least one electrical power signal and at least one information signal coming from a telecommunication network.
- the present invention also relates to corresponding connection and conversion devices.
- information processing equipment is connected to telecommunications networks through transmitting elements to which they are connected by communication mediums of variable length.
- the PSTN network information processing equipment, such as telephones, are connected by a pair of twisted wires varying in length from 0 to 8 km, for example, to an operator center forming an element transmitter responsible for exchanging information with the PSTN network.
- the telecommunication network as defined here corresponds to the equipment forming what is commonly designated “information transport network” and the communication medium corresponds to the equipment forming what is commonly designated “distribution network”.
- the transmitter elements include means for transmitting an electrical power signal and means for coupling an information signal with the power signal electric for transmission on the communication medium to the processing equipment.
- the processing equipment is in turn connected to the communication medium by a connection device comprising filtering means adapted to separate the information and the electrical power.
- a connection device comprising filtering means adapted to separate the information and the electrical power.
- the public PSTN network makes it possible to transport, on the same pair of twisted wires, between the operator center and the processing equipment, to the times a continuous supply voltage of about 48 volts (V) capable of supplying a current of up to 60 milliamps (mA) and analog voice and control signals modulated in a bandwidth conventionally ranging from 50 to 3600 hertz.
- V volts
- mA milliamps
- the electrical power signal transmitted by the transmitter element is limited by the capacities of the processing equipment and in particular by its operating ranges of voltage and supply current which are defined, in a conventional manner, by standards which recommend a tolerance around nominal values.
- the processing equipment being placed at any distance from the transmitting element the communication medium is of variable length, so that the losses of the power signal are not predictable.
- the equipment must never be supplied with a voltage or a current higher than the maximum values of its operating ranges, even when the length of the communication medium is very short.
- the same problem occurs in other remote power systems, such as remote power systems on local computer networks known as "Power on LAN", in which the transmitted electrical power is limited in voltage and intensity by the maximum tolerances of the equipment which can be placed at variable distances and therefore receive an electrical power signal with variable losses.
- power on LAN remote power systems on local computer networks
- the transmitted electrical power is limited in voltage and intensity by the maximum tolerances of the equipment which can be placed at variable distances and therefore receive an electrical power signal with variable losses.
- the needs for electrical power at the level of treatment equipment exceed the capacities of remote power systems.
- communication media are frequently used to transport different types of information for a plurality of different processing equipment.
- the transmitted power signal is then limited by the lowest maximum voltage and supply current values of all the connected processing equipment, so that the transmitted electric power is often insufficient even for the supply of a single equipment.
- Processing equipment must therefore require external electrical power sources such as a three-phase electrical network.
- the sources of external electrical energy supply may not be reliable, be expensive or not always be available.
- the transmitted electrical power only allows the processing of a limited number of transmitted information, the processing of other information being dependent on external electrical energy sources.
- the aim of the present invention is to remedy this problem by defining a remote power supply system as well as corresponding connection and conversion devices making it possible to process the information transmitted independently of an external source of electric power.
- the subject of the invention is a remote power supply system for at least one information processing equipment having determined operating ranges of supply voltage and intensity and being connected, by a medium. communication of variable length, to a transmitter element which comprises: - means for exchanging at least one information signal with a telecommunications network; - means for transmitting an electrical power signal to said at least one piece of equipment; means for coupling said at least one information signal exchanged with said network, with said at least one electrical power signal with a view to their transmission over said communication medium intended for a device for connecting said at least one piece of equipment processing device, said connection device comprising filtering means adapted for separating said electrical power information signals, characterized in that: - said means for transmitting an electrical power signal are suitable for transmitting a signal electrical power of a voltage and / or intensity greater than the maximum voltage and / or supply current of the corresponding ranges of said at least one processing equipment; - And in that the system comprises a power converter with wide ranges of voltage and / or current input, interposed on said communication
- the system of the invention thus makes it possible, through the communication medium, to deliver an electrical power signal to the processing equipment capable of ensuring its operation and within its voltage and intensity limits.
- - said converter is interposed on said communication medium between said filtering means of said connection device and said at least one processing equipment, to which it is connected directly by said second communication medium;
- - said converter is interposed on said communication medium between said transmitter element and said filtering means of the connection device, said converter being connected to said first communication medium by means of a filtering unit in order to separate said signals from information and electrical power and being connected to said second communication medium by a coupling unit in order to transmit said adapted information and electrical power signals on said second medium;
- - Said transmitting element is adapted to transfer a single signal containing one or more types of information, said converter being adapted to deliver power to a processing equipment of at least one of said types of information; said transmitting element is adapted to transfer at least two signals each containing one or more types of information, said filtering means being adapted to deliver a different signal
- the invention also relates to a device for connecting to a communication medium, with a telecommunication network of at least one processing equipment having determined operating ranges of voltage and supply current, the device comprising filtering means adapted to separate at least one information signal and one electrical power signal conveyed by said communication medium, characterized in that it further comprises a converter with wide ranges of voltage input and / or intensity, suitable for receiving as an input an electrical power signal of a voltage and / or intensity greater than the voltage and / or intensity maximums for supplying said at least one processing equipment and for delivering a supply having a voltage and an intensity in the determined operating ranges of said at least one processing equipment.
- Another subject of the invention is a power conversion device inserted in a communication medium between a transmitter element and an information processing equipment to define a first communication medium between said transmitter element and said conversion device and a second communication medium between said conversion device and said processing equipment, said device being connected to said first communication medium via a filtering unit in order to separate information and electrical power signals and being connected to said second communication medium by a coupling unit in order to transmit said information signals and a suitable electrical power signal, characterized in that it comprises a converter with wide ranges of voltage and / or current input, between said filtering and coupling units adapted to receive as input a power signal this electric one voltage and / or intensity greater than the voltage and / or intensity maximums for supplying said at least one processing equipment and for delivering a supply having a voltage and an intensity within the determined operating ranges of said at least one processing equipment.
- FIGS. 1 to 5 are block diagrams generally representing different embodiments of the invention
- - Figures 6a and 6b show a detailed embodiment of the system of the invention as described with reference to Figure 5
- - Figures 7a and 7b show another detailed embodiment of the system of the invention as described with reference to Figure 5.
- FIG 1 there is shown a general embodiment of a system according the invention.
- the system represented comprises a transmitter element 2 making it possible to transmit information and power signals to a connection device 4 of at least one processing equipment formed of high speed communication equipment such as for example an xDSL modem , noted MHD.
- the MHD processing equipment conventionally has determined ranges of voltage and supply current operation defining maximum values of supply voltage and current such as for example 12 volts (V) and 60 milliamps (my).
- the processing equipment MHD is connected to a telecommunications network 6, formed in the example of a digital information transport network of the xDSL type.
- the telecommunications network 6 is considered to be what is commonly referred to as an "information transport network" formed, for example, of optical loops and associated equipment.
- the emitting element 2 and the connection device 4 are connected by means of a transmission medium 8 formed, for example, of a pair of twisted copper wires of a total length variable from 0 8 km.
- This communication medium 8 forms what is commonly referred to as a "distribution network" and comprises one or more sections linked together by suitable equipment, such as switches and automatic switches.
- the transmitting element 2 comprises means 10 for exchanging with the network 6, a high speed information signal, such as for example a signal of the xDSL type.
- This transmitter element 2 also comprises means 12 for transferring an electrical power signal and coupling means 14 allowing the transmission, on the twisted pair 8, of the xDSL signal and of the electrical power signal.
- the electrical power signal transmitted by the means 12 is a signal of a voltage and / or an intensity greater than the voltage and / or the maximum operating intensity of the MHD equipment.
- the transmitted electrical power signal has a voltage and / or intensity greater than twice the maximum operating voltage and / or intensity of the MHD processing equipment.
- the device 4 comprises, correspondingly, filtering means 16 produced in a conventional manner and adapted to deliver a first signal containing the xDSL type information and a second signal containing the electrical power.
- the system also comprises a converter 18 of electrical power, with wide ranges of voltage and current input, interposed on said communication medium 8 between the transmitter element 2 and the MHD equipment.
- a converter with wide input ranges is a converter suitable for delivering one or more constant voltage and / or intensity output signals from an input varying within a large range, such as for example a voltage input varying between 0 and 300 volts.
- such a converter includes elements for temporary storage of electrical energy in order to make it possible to ensure one or more output signals even in the absence of input power for a determined period.
- Such converters are conventional in the field of transporting electrical energy.
- the converter 18 thus defines a first communication medium 8a between the transmitter element 2 and the converter 18 and a second communication medium 8b between the converter 18 and the processing equipment MHD.
- Said converter 18 is adapted to receive the electric power signal emitted by the emitting element 2 and deliver an electric power signal adapted in voltage and intensity to take into account the power losses caused by the second communication medium 8b in order to deliver to the MHD processing equipment, a power supply having a voltage and an intensity within its determined operating ranges.
- the converter 18 is inserted directly into the connection device 4 between the filtering means 16 and the processing equipment MHD.
- the second transport medium 8b between the converter and the processing equipment MHD is a distance of only a few meters so that the losses caused are very low. Therefore, the electrical power signal delivered by the converter 18 has a voltage and an intensity equal to or less than the maximum supply voltages and intensities of the MHD equipment.
- the electric power delivered by the converter 18 is used to supply other information processing equipment as will be described in more detail with reference to FIG. 3.
- the system described makes it possible to transmit in a conventional manner over the communication medium 8, a signal containing information such as high-speed data information and the electrical power necessary to supply equipment for processing this information.
- FIG. 1 a second embodiment of the system described in FIG. 1 will be described in which the converter 18 is interposed between the transmitting element 2 and the processing equipment MHD, separate from the connection device. 4.
- the converter 18 is placed at any location on the communication medium 8 and is integrated into a conversion device 19. It is connected to the first communication medium 8a via a filtering unit 16a, similar to the filtering means 16, in order to separate the information and electrical power signals.
- a coupling unit 14a similar to the coupling means 14, in order to transmit the information signals and the adapted electrical power signal.
- the voltage and current levels at the output of the converter must take into account the length of the second communication medium 8b connecting it to the connection device and therefore to the MHD processing equipment, in order to consider the resulting losses.
- the converter delivers directly at its output, an electrical power signal of a voltage and / or intensity greater than the maximum voltage and / or intensity supply levels of the processing equipment MHD .
- These voltage and / or intensity levels are adapted to the losses caused by the second communication medium 8b, for delivering a power supply having a voltage and an intensity within the determined operating ranges of the MHD processing device.
- the converter 18 includes adjustment means in order to allow adaptation, by an operator or an automatic system, of the output voltage and / or intensity levels to the length of the second communication medium 8b.
- the transmitter element 2 comprises means 20 for exchanging a signal containing first information transmitted simultaneously with second information.
- a signal is formed for example of digital voice information frames formed according to the voice over IP protocol, called VOIP, and high speed digital data information according to the xDSL protocol.
- the exchange means 20 are adapted to multiplex this information, in amplitude, frequency, phase or even over time.
- the transmitter element 2 also comprises means 22 for transferring an electrical power signal suitable for supplying electrical power and means 24 for coupling the information signal and the electrical power signal in order to transmit them on the twisted pair 8.
- the electrical power signal transmitted by the means 22, as previously, is at a voltage and / or a current greater than the voltage and / or the maximum supply current of the connected processing equipment.
- the connection device 4 includes filtering means 26 adapted to deliver an information signal containing the first and second information and a signal containing the electrical power.
- the information signal delivered by the filtering means 26 is transmitted to a high-speed modem MHD capable in particular of extracting the digital voice information therefrom to then transmit it for example to a telephone operating according to the voice over IP protocol, called telephone over IP and rated TIP or to a transmitting reception antenna by wireless radio waves of WiFi type.
- the electrical power signal delivered by the filtering means 26 is transmitted to a converter 28 with wide input ranges.
- the converter 22 is adapted to output a plurality of electrical power signals, each dedicated to a different processing equipment.
- the various electrical power signals have a voltage and an intensity adapted to the length of the communication medium 8b connecting the converter 22 to each item of equipment so as to neither exceed their voltage nor their maximum supply intensity.
- the converter delivers as output a first power signal dedicated to the MHD modem, a second power signal dedicated to the telephone over IP TIP, as well as a third power signal dedicated to the WiFi antenna.
- the second communication medium 8b connecting the converter 18 to each MHD, TIP and WiFi device is only a few meters long.
- the converter 18 is therefore directly connected to each of the different processing equipments, so that each power signal is of an intensity and a voltage lower than the maximum supply voltage and intensity of each equipment respectively. It therefore appears that the system of the invention makes it possible to convey, on the same communication medium 8, a plurality of types of information as well as sufficient electrical power for the operation of a plurality of different corresponding processing equipment.
- the transmitter element 2 comprises means 30 for transferring a signal containing first analog voice information according to the PSTN standard, inserted into high speed digital data of xDSL type.
- the element 2 comprises means 32 for transferring an electric power signal and means 34 for coupling the information signal and the electric power signal for their transmission on the medium 8.
- the device for connection 4 includes filtering means 36 which deliver a first signal containing the information to a high speed modem MHD adapted to dissociate the data information and the voice information and transmit the latter to a telephone T.
- the filtering means 36 also deliver a second signal containing all of the electrical power received to transmit it to a converter 38 with wide input ranges suitable for supplying the MHD modem and the telephone T.
- the MHD modem decodes the frames of high-speed digital data to extract analog voice information and transmit it to telephone T, which is also powered by p by the converter 48.
- the MHD modem can separate the analog voice information and mix it with electrical power received from the converter 48 so as to directly form a telephone signal of PSTN type for transmitting to the telephone T, voice information and electrical power combined.
- the supply of the telephone T is therefore ensured by the electrical power signal transmitted by the means 32 and is delivered to the telephone T indirectly through the MHD modem.
- the MHD modem can reconstruct a PSTN type signal from voice information received for example in Internet format, called IP format.
- IP format Internet format
- these signals are formed of a signal containing analog voice information according to the PSTN standard and of a high speed data information signal of xDSL type and the transmitter element 2 comprises means 40 for exchanging these different information signals with the network 6.
- the transmitter element 2 further comprises means 41 for generating a signal of PSTN type formed by a unit for transmitting a electrical power of a direct voltage of the order of 48 volts capable of delivering up to 60 milliamps and of a unit for coupling this electrical power with the analog channel information signal in order to form a signal according to the standard RTC. This electric power is called nominal electric power.
- the transmitter element 2 further comprises means 42 for transmitting an electrical power signal, a voltage and / or an intensity greater than the voltage and / or the maximum intensity of the connected processing equipment. , and coupling means 44 adapted to transmit on the same medium 8, the PSTN type signal, the xDSL type signal and the electrical power signal. This electrical power is called additional electrical power.
- the connection device 4 includes filtering means 46 adapted to deliver a first PSTN type signal containing the analog voice information and the nominal electric power to a telephone T, and a second signal containing the information xDSL type data intended for MHD high speed communication equipment.
- the filtering means 46 also deliver a third signal containing the additional electrical power transmitted to a converter 48 with wide input ranges.
- This converter 48 is in particular suitable for supplying electrical power to the MHD modem for processing information of the xDSL type.
- the analog voice information is mixed with the nominal electrical power of 48 volts DC.
- knowledge of the consumption of nominal electrical power is necessary for establishing communications.
- the detection of a line seizure corresponding to the off-hook of a handset is based on the detection of a reduction in the voltage on the medium 8.
- the transmitter element 2 is adapted for transmitting the additional electric power, in a discontinuous manner over time, so that by instant, the communication medium 8, only carries the PSTN type signal possibly combined with the xDSL type signal. Thus during the moments, no additional electrical power is transmitted on the medium 8.
- the converter is preceded by means 49 of electrical energy storage to allow regulation of these interruptions of power transmission. electric.
- the connection device 4 is connected to the telephone T and to the high speed communication equipment MHD.
- the signal exchange means 40 adapted to exchange with the network 6, a first PSTN type signal containing analog voice information and a second information signal. xDSL type high speed digital data as described above. These exchange means are followed by means 41 for generating the PSTN type signal as described above.
- the transmitter element 2 also comprises, the means 42 for transferring the additional electrical power signal formed in the example described, of a supply of more or less 175 volts sinusoidal, or 350 volts peak to peak, capable of supplying up to '' at 60 milliamps of current.
- the coupling means 44 comprise a coupler 60 produced in a conventional manner and adapted to couple on the same signal, analog voice information of PSTN type and data information of xDSL type.
- the coupling means 44 comprise a switch 62 which can be controlled remotely and which is suitable for connecting the output of the transmitter element 2 connected to the twisted pair 8, either to the output of the coupler 60 delivering the combined information signals, or to the means 42 for transferring an additional power signal delivering a sinusoidal voltage of more or less 175 volts.
- the connection device 4 comprises.,. in the filtering means 46, a remotely controllable switch 64 adapted to connect the input of the connection device 4 connected to the twisted pair
- the filter element 66 is adapted to separate on the same signal the analog voice information of PSTN type and the high speed data information of xDSL type, such a filter element being produced in a conventional manner.
- the means 49 are formed, in the embodiment described, of a rechargeable battery recharged only by the additional electric power emitted by the means 42. As has been described with reference to FIG. 4, the filtering means 46 deliver therefore a first signal of PSTN type on the telephone T, a second signal of xDSL type on the high speed modem MHD, and a third signal containing the additional electrical power to the means 49 of energy storage.
- the means 49 for storing electrical energy are connected to the converter 48 which supplies the MHD modem so as to ensure its operation by delivering an electrical power signal whose voltage and intensity do not exceed its voltage and intensity maximums. power.
- the system comprises means 68 for detecting the presence of an information signal on the twisted pair 8 and connected to the controllable switches 62 and 64 so as to ensure the transmission of the additional electrical power signal on the twisted pair 8 only in the absence of an information signal. Referring to Figures 6A and 6B, we will now describe the operation of this system.
- the detection means 68 control the switches 62 and 64 so that the means 42 for transferring a power signal additional are connected directly to the means 48 for storing electrical energy in order to supply them.
- the twisted pair 8 carries only the additional electrical power signal in the form of a sinusoidal signal of 350 volts peak to peak, as shown in FIG. 6B.
- the means 68 for detecting an information signal detect a line seizure preceding the transmission of an analog voice signal of PSTN type or of digital data of xDSL type. This line socket can be initiated by the emitting element 2 or by processing equipment connected to the connection device 4.
- the means 68 control the switches 62 and 64 so as to connect the means 40 for the exchange of information signals to the telephone T or to the MHD modem via the medium 8.
- the switch 62 connects the output of the coupler 60 to the twisted pair 8 so that this twisted pair 8 carries the signal PSTN containing analog voice information and the associated nominal electrical power of 48 volts and / or xDSL type data information.
- the switch 44 connects the twisted pair 8 to the filtering means 46 adapted to output the PSTN signal transmitted to the telephone T and the high speed data signal of the xDSL type which is transmitted to the MHD modem.
- the telephone T is supplied at least in part by the nominal electric power transmitted with the analog voice information according to the PSTN standard.
- the MHD modem meanwhile, is powered only by the converter 48 connected to the means 49 for storing electrical energy, in order to ensure its operation thanks to the additional electrical power previously transmitted and stored.
- the voice information associated with the nominal electric power and / or the data information is therefore transmitted sequentially over time with the additional electric power over the same communication medium formed by the twisted pair 8. It therefore appears that the system described allows the transmission over the same medium of analog voice information, data information, nominal electric power and additional electric power to ensure the processing of voice and data information.
- FIG. 7A there will now be described a second detailed embodiment of the invention as shown with reference to FIG. 5.
- the means 40 for exchanging signals are recognized.
- information and 41 for generating a PSTN type signal adapted to emit a PSTN type signal containing analog voice information mixed with a nominal electric power and a second high speed digital data information signal of the type xDSL.
- the PSTN type signal and the xDSL type signal are mixed together in a conventional manner, by the coupling means 44, so that at the end of these , a single signal is delivered containing all the xDSL and PSTN type information, as well as the nominal power of 48 volts corresponding to the PSTN standard.
- the output of these coupling means 44 is connected to a decoupling unit 70 formed for example by a capacitor, so that at the output of this decoupling unit 70, are only supplied with alternative components of the input signals, the 48-volt DC voltage component being eliminated.
- the output of the decoupling unit 70 is connected to the means 42 for transferring an additional electrical power signal and is directly connected to the communication medium 8.
- the decoupling unit 70 thus forms the coupling means as described in FIG. 5 under the reference 44.
- the means 42 for transmitting an electrical power signal are adapted for the emission of a signal in the form of a DC voltage slot, alternating between + 175 volts and + 48 volts, as shown with reference to Figure 7B.
- the emitting element 2 comprises means 72 for simulating line seizure, interposed between the coupling means 44 and the decoupling unit 70.
- These simulation means 72 are formed, in the embodiment described, of a controllable switch 74 in series with a resistor 76 connected to a ground. Closing the controllable switch 74 thus causes a current to flow through the resistor 76 to ground, causing a voltage drop and simulating a line tap.
- the filtering means 46 are formed by a high-pass filter 80 and a low-pass filter 82, arranged in parallel. The output of the high-pass filter 80 makes it possible to obtain the information signals directly and is connected to the processing equipment MHD and T.
- the output of the low-pass filter 82 is in turn connected to a controllable switch 84 and, in series, to the energy storage means 49 as well as to the converter 48.
- the output signals of the converter 48 are then delivered to the MHD and T processing equipment, in order to ensure their supply.
- the converter 48 delivers several different output signals at voltage and intensity levels adapted to the length of the second communication medium 8b connecting it to the MHB and T processing equipment. It thus delivers electrical power, voltage and current signals lower than the maximum voltage and supply current of each of the equipment while ensuring the transmission of sufficient electrical power to ensure its operation.
- the system comprises means 90 of line seizure detection connected to the two controllable switches 74 and 84 and formed, in the embodiment described, of means for monitoring the current flowing on the first communication medium 8a.
- line seizure detection means 90 are integrated in the transmitting element 2.
- the decoupling unit 70 of the transmitting element 2 receives as input, the multiplex signals of PSTN type and of xDSL type. It outputs the only alternative components of these signals, having removed the nominal power component of 48 volts DC.
- These information signals are then combined with the additional power signal delivered by the means 42 by a simple connection as defined above. It therefore appears that the first communication medium 8a carries alternating signals corresponding to parts of the PSTN and xDSL signals and a niche signal of additional electrical power.
- the xDSL signal is transmitted in its entirety, while only the voice and ringing components of the PSTN signal are transmitted.
- the system is such that the switch 74 of the line seizure simulation means 72 is open, while the switch 84 of the connection device 4 is closed.
- the filtering means 46 receive the combined signals and separate, using the high-pass filter 80, the information signals which are transmitted directly to the MHD modem and / or to the telephone T.
- the information carried by the signals xDSL and PSTN are permanently transmitted between the MHD and T processing equipment and the telecommunications network 6.
- the high-pass filter 80 also fulfills a voltage limitation function in order to transmit to the equipment only voltage levels lower than or equal to their maximum supply voltage.
- a maximum voltage of 48V is conveyed by the link between the high pass filter 80 and the telephone T.
- the filtering means 46 also separate, using the low pass filter 82, the signal of additional electrical power which is transmitted to the storage means 49 and then to the converter 48, which directly delivers power supply signals, in particular for the MHD processing device.
- the telephone T does not require power while the MHD modem is supplied by the converter 48 which delivers an electrical power signal adapted to the length of the second communication medium 8b, so as not to exceed its maximum supply voltage and current.
- the telephone T is off the hook, following the reception of a ring signal or spontaneously to take a line.
- the value of the current flowing on the communication medium 8 is modified by this line connection corresponding to a variation in the resistance of the telephone.
- the line tap is detected only when the voltage of the additional electrical power signal is at its low level, corresponding to the nominal voltage of the PSTN signal, the line tap therefore results in a zero current during these intervals.
- the line outlet detection means 90 then control the controllable switches 74 and 84 in order to close the controllable switch 74 of the line outlet simulation means 72 and to open the controllable switch 84 of the connection device 4.
- the closing of the switch 74 which can be controlled by means of line socket simulation 72 makes it possible to simulate, in terms of the voltage and intensity of the PSTN signal, the line socket in order to allow this information to be transmitted in the conventional manner line connection to the telecommunications network 6.
- the opening of the controllable switch 84 of the connection device 4 makes it possible to interrupt the charging of the storage means 49, so as to avoid the circulation on the communication medium 8 of a current liable to disturb the transmission of PSTN type information.
- the telephone T is supplied at least in part with the nominal electric power of 48 V transmitted by the means 42 and filtered by the high pass filter 80 as indicated above.
- the telephone T also receives from the converter 48, an additional electrical power.
- the MHD modem is powered only by the converter 48 which transforms the energy stored by the storage means 49 to deliver an electrical power signal adapted to the length of the second communication medium 8b. It therefore appears that this embodiment allows the remote power supply system of the invention to operate, while allowing the transmission of information.
- the telephone T includes means for variable amplification of the voice signal. These amplification means are controlled as a function of the level of supply voltage received, which is considered to be dependent on the length of the communication medium. Thus a low voltage normally results from a strong attenuation and leads to a strong amplification.
- the voltage received by the telephone is independent of the length of the first communication medium.
- the level of the supply voltage delivered by the converter can be the maximum of the supply voltage of the telephone, thus resulting in a minimum amplification of the voice signal.
- the converter should be equipped with a module for determining power losses on the first communication medium connecting it to the transmitter element.
- this module includes means for measuring the power received, the losses being deductible from knowledge of the power transmitted.
- the converter must also have an output with controllable voltage level intended for supplying the telephone, and whose level of voltage is determined based on the losses measured on the first communication medium.
- the length of the first communication medium is determined and the voltage level of the power supply of the telephone T is adjusted to be representative of this length. This keeps the phone operating and rated power while having more power for other equipment.
- the different embodiments can be combined with one another.
- the converter can be arranged indifferently according to the embodiments described with reference to FIGS. 1 or 2 and can be adapted to supply one or more pieces of equipment.
- the converter is connected to a backup electrical energy source, so as to be able to draw additional electrical energy in the event of failure or insufficiency of the electrical power signal emitted by the transmission means of the transmitting element.
- the converter with wide input ranges delivers a variable electrical power signal as a function of the nature of the information received, in order to supply only the equipment for processing this information.
- the converter is controlled by management means adapted to identify the nature of the information received and to control the converter so as to cause the generation of an electric power corresponding to the supply of a processing equipment. information received.
- the management means are also adapted to allow a prioritization of the supplies according to an order of priority between the various processing equipments capable of being simultaneously in operation.
- the power of the phone must be maintained at all times and the remaining electrical power must be distributed among the different equipment according to a pre-established order and / or remote management information transmitted by the transmitting element.
- other elements can be directly connected to the converter such as for example a GSM type wave communication interface or other types of interfaces such as ETHERNET, BLUETOOTH interfaces, or any other communication interface.
- the connection device can integrate one or more of the elements which it supplies such as for example the broadband modem or else or radio or GSM interface.
- the connection device is in the form of a telephone connection console having a plurality of connection plugs each adapted to a different processing equipment and simultaneously providing the information and the electrical power necessary for its implementation.
- connection device is formed by a broadband radio modem permanently supplied only from the telephone network, thus forming a true network terminal, in particular in the case of digital networks such as the GSM or xDSL network.
- a broadband radio modem permanently supplied only from the telephone network, thus forming a true network terminal, in particular in the case of digital networks such as the GSM or xDSL network.
- Such an embodiment has the advantage of transforming each connection device into an entry point of the network, regardless of the use of the device by a main user.
- the connection device can be installed in places inaccessible to particular users for direct connection, so as to present only a connection interface by radio waves.
- the supply of the processing equipment and the transmission of the information signals can be done on several independent links. It is also possible to transmit power and signals on the same link by using adequate coupling and filtering means.
- the output of the converter delivering the electrical power signal must be connected to the link carrying the information signal by a filter so that the information signals are not overwritten by the converter.
- the total power transmitted over the communication medium must not exceed the security standards of the telephone network used.
- the PSTN network deployed in France includes lightning protection preventing the transmission of a total voltage greater than 400 volts so that the maximum voltage transmitted should be limited to an alternating or direct voltage, of the order for example ⁇ 175 volts.
- the electrical energy storage means can be used to supply electrical energy to equipment for processing received information and for communication, but also to other types of equipment, such as, for example, equipment for man-machine interface, such as speakers, cordless telephones, display screens, etc. It therefore appears that the system according to the invention and the corresponding connection device make it possible to supply remote control equipment processing such as telephones, communication devices, radio interfaces, or any other equipment by providing additional electrical power compared to the nominal electrical power carried by the network.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Dc Digital Transmission (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04787339A EP1665759A1 (fr) | 2003-09-16 | 2004-09-09 | Systeme et dispositif d alimentation a distance d un eq uipement de traitement d informations |
US10/571,784 US20070003053A1 (en) | 2003-09-10 | 2004-09-09 | System and device for the remote powering of a data-processing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0310872A FR2859856A1 (fr) | 2003-09-16 | 2003-09-16 | Systeme et disposiif d'alimentation a distance d'un equipement de traitement d'informations |
FR0310872 | 2003-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005029832A1 true WO2005029832A1 (fr) | 2005-03-31 |
Family
ID=34203487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/002290 WO2005029832A1 (fr) | 2003-09-10 | 2004-09-09 | Systeme et dispositif d'alimentation a distance d'un equipement de traitement d'informations |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070003053A1 (fr) |
EP (1) | EP1665759A1 (fr) |
FR (1) | FR2859856A1 (fr) |
WO (1) | WO2005029832A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8024012B2 (en) * | 2008-06-11 | 2011-09-20 | International Business Machines Corporation | Intelligent wireless power charging system |
US8972236B2 (en) * | 2012-05-18 | 2015-03-03 | Youtech, Inc. | Method and apparatus for performing real-time, in-the-field switching-order simulation for an electric power system |
WO2015164259A1 (fr) * | 2014-04-22 | 2015-10-29 | Microsemi Corporation | Alimentation par retour de puissance a equilibrage de charge |
WO2016170530A1 (fr) * | 2015-04-20 | 2016-10-27 | Microsemi Corp. - Analog Mixed Signal Group, Ltd. | Système et procédé d'alimentation à retour de puissance |
CN109417484B (zh) | 2016-07-04 | 2020-01-21 | 美高森美Poe有限公司 | 反向馈电供电装备和方法 |
US10340977B2 (en) | 2017-07-28 | 2019-07-02 | Microsemi P.O.E Ltd. | Reverse power feeding power sourcing equipment and method |
CN111181737B (zh) * | 2018-11-12 | 2021-09-14 | 华为技术有限公司 | 控制方法、受电设备和系统 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0367270A2 (fr) * | 1988-11-04 | 1990-05-09 | Murata Manufacturing Co., Ltd. | Equipement terminal d'un circuit de données avec une source d'alimentation attachée à cet équipement |
US5629931A (en) * | 1992-10-27 | 1997-05-13 | Semcotec Handelsgesellschaft M.B.H. | Information transmission system |
EP0984612A1 (fr) * | 1998-03-31 | 2000-03-08 | Japan Aviation Electronics Industry, Limited | Modem dsl |
WO2002028111A2 (fr) * | 2000-09-28 | 2002-04-04 | Inovia Telecoms Ltd. | Technique amelioree d'alimentation en energie a distance d'abonnes telephoniques |
US20020130641A1 (en) * | 2001-03-09 | 2002-09-19 | Schofield Wade S. | Apparatus and method for providing span power to communication equipment at a customer premise |
WO2003026340A1 (fr) * | 2001-09-20 | 2003-03-27 | Flextronics International Gmbh & Co. Nfg. Kg | Circuit pour alimenter a distance plusieurs systemes locaux au moyen d'un systeme central alimente a distance |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6643566B1 (en) * | 1999-01-12 | 2003-11-04 | Powerdsine Ltd. | System for power delivery over data communication cabling infrastructure |
-
2003
- 2003-09-16 FR FR0310872A patent/FR2859856A1/fr not_active Withdrawn
-
2004
- 2004-09-09 US US10/571,784 patent/US20070003053A1/en not_active Abandoned
- 2004-09-09 WO PCT/FR2004/002290 patent/WO2005029832A1/fr active Application Filing
- 2004-09-09 EP EP04787339A patent/EP1665759A1/fr not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0367270A2 (fr) * | 1988-11-04 | 1990-05-09 | Murata Manufacturing Co., Ltd. | Equipement terminal d'un circuit de données avec une source d'alimentation attachée à cet équipement |
US5629931A (en) * | 1992-10-27 | 1997-05-13 | Semcotec Handelsgesellschaft M.B.H. | Information transmission system |
EP0984612A1 (fr) * | 1998-03-31 | 2000-03-08 | Japan Aviation Electronics Industry, Limited | Modem dsl |
WO2002028111A2 (fr) * | 2000-09-28 | 2002-04-04 | Inovia Telecoms Ltd. | Technique amelioree d'alimentation en energie a distance d'abonnes telephoniques |
US20020130641A1 (en) * | 2001-03-09 | 2002-09-19 | Schofield Wade S. | Apparatus and method for providing span power to communication equipment at a customer premise |
WO2003026340A1 (fr) * | 2001-09-20 | 2003-03-27 | Flextronics International Gmbh & Co. Nfg. Kg | Circuit pour alimenter a distance plusieurs systemes locaux au moyen d'un systeme central alimente a distance |
Also Published As
Publication number | Publication date |
---|---|
EP1665759A1 (fr) | 2006-06-07 |
US20070003053A1 (en) | 2007-01-04 |
FR2859856A1 (fr) | 2005-03-18 |
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