EP3607663A1 - Dispositif à puissance d'émission dépendant de l'énergie - Google Patents

Dispositif à puissance d'émission dépendant de l'énergie

Info

Publication number
EP3607663A1
EP3607663A1 EP18708382.9A EP18708382A EP3607663A1 EP 3607663 A1 EP3607663 A1 EP 3607663A1 EP 18708382 A EP18708382 A EP 18708382A EP 3607663 A1 EP3607663 A1 EP 3607663A1
Authority
EP
European Patent Office
Prior art keywords
energy
unit
radio
amount
transmission power
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.)
Withdrawn
Application number
EP18708382.9A
Other languages
German (de)
English (en)
Inventor
Eduard Ruff
Markus TOESKO
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP3607663A1 publication Critical patent/EP3607663A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/10—Power supply of remote control devices
    • G08C2201/11—Energy harvesting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/45—Transponders

Definitions

  • the invention relates to a device with an energy converter, which serves to convert energy from the environment of the device and / or from a mechanical actuation of the device into electrical energy, a memory unit which serves to store the electrical energy, and a radio unit to the serves to receive and / or transmit radio signals, wherein the radio unit draws the electrical energy of the storage unit, in particular to transmit radio signals, and wherein the radio unit comprises a processor unit which serves to prepare a signal packet to be sent as a radio signal and set a transmission power of the radio unit.
  • Such devices are used to remotely control other electrical devices or to send information.
  • a device may be formed as a radio switch, which is used to turn on / off a light module.
  • Such devices can advantageously be placed in places where power supply would be difficult. Because such devices are energy self-sufficient, they can be flexibly placed and mounted. A relocation or repositioning of such a device can thus be done just as easily. Furthermore, no batteries are needed and the effort associated with charging a battery is eliminated.
  • self-sufficient radio-capable devices require an energy converter that generates sufficient energy to operate the device and send out a radio signal.
  • radio signal or radio unit is not exclusively to be associated with electromagnetic signals of a specific frequency range, but may also be at least ultrasonic signals, laser signals and / or infrared signals.
  • a self-sufficient radio switch from - 40 to 85 degrees to be fully functional.
  • Fully functional means at least that sufficient energy is available to send a complete message.
  • energy converters having copper lines such as a copper coil in an electro-mechanical generator
  • the ambient temperature can play a non-negligible role in the efficiency of the energy converter because the conductivity of copper coils is temperature dependent. As the ambient temperature increases, the amount of energy generated by actuation is reduced.
  • Component tolerances also cause energy converters produced in a series to produce different amounts of energy (per actuation, for example), depending on the exact design of the components. Also, the speed of a specific actuation can affect the amount of energy produced. Autonomous wireless switches are therefore designed so that, taking into account a given tolerance range and at temperatures between minus 40 degrees and plus 85 degrees, enough electrical energy is generated to be able to send a complete message. A consequence of this design is that in most conditions of use, a non-negligible amount of energy remains after sending a message.
  • US 2002/0190610 A1 discloses a system in which a radio switch prepares and transmits a message only after a capacitor stores a predetermined amount of energy or after the voltage across the capacitor exceeds a predetermined threshold. If too much energy remains after a transmission in the capacitor, so that the voltage does not fall below this threshold again, the threshold value can not be exceeded. It can then be recognized but no re-actuation.
  • This patent US 2002/0190610 A1 further discloses the one management unit selectively drives a radio frequency transmitter.
  • the carrier frequency is only driven after a voltage exceeds a threshold to get the highest utilization from the generated energy.
  • the object is achieved by a device with an energy converter which serves to convert energy from the environment of the device and / or from a mechanical actuation of the device into electrical energy, with a storage unit which serves to store the electrical energy, and with a radio unit which serves to receive and / or transmit radio signals, wherein the radio unit uses the electrical energy of the memory unit, in particular to transmit radio signals, and wherein the radio unit has a processor unit which serves to prepare a data packet to be transmitted as a radio signal and set a transmit power of the radio unit, wherein the device is configured to determine and / or approximate an amount of energy that is currently available in the memory unit, and wherein the processor unit is adapted to the transmission power of the radio unit based on an energy value that the determined and / or approximi represents an energy amount.
  • the storage unit may be a capacitor.
  • the radio unit can be a transmitter circuit, which is designed, for example, to emit radio signals in a 2.4 gigahertz band. Otherwise, however, it may also be an ultrasound transmitter or an infrared transmitter unit.
  • the processor unit may be, for example, a microprocessor.
  • the device is thus capable of setting a transmission power or a transmission require the device to become aware of how much energy is currently available.
  • the amount of energy in the storage unit can be determined and / or approximated.
  • there are several ways to check how much energy is currently available It would be possible to perform a current measurement between the energy converter and the storage unit to determine how much energy is flowing from the energy converter into the storage unit. Otherwise, it would be possible to use one or more sensors that monitor the state of the energy converters so as to be able to approximate how much energy the energy converter can generate or generate at a given time or under certain conditions.
  • the energy converter may be, for example, an electromechanical generator comprising a copper coil.
  • the energy converter is an induction generator for a radio switch comprising a magnetic element having a north pole contact section and a south pole contact section, and a coil core having pole contact sections which can be contacted with the north pole contact section and the south pole contact section, the magnet element and the coil core being arranged relative to one another such that they are movable a magnetic flux direction reversal in the coil core can be generated when changing between a first and second rest position defining a direction of movement for the relative movement, in which the north pole and south pole contact sections respectively contact the respectively assigned pole contact sections.
  • the induction generator may have a magnetizable sliding contact section extending parallel to the direction of movement for sliding guidance of the relative movement between the coil core and the magnetic element.
  • the memory unit can be scanned to determine the current amount of energy.
  • the capacitor can be scanned by means of a high-voltage divider and an AD converter.
  • the processor unit takes into account the currently available energy. In this case, the processor unit can deduct an amount of energy, which is required by the processor unit itself to the Prepare data package.
  • the data packet can be prepared, for example, according to a standard protocol, for example a KNX protocol for building technology.
  • the device may interrogate the amount of energy in the memory unit several times to determine, for example, after a data packet has been sent, how much energy is still available in the memory unit.
  • the device has a temperature sensor, wherein the device is designed to approximate the currently available amount of energy based on an ambient temperature determined by the temperature sensor.
  • a table can be stored in a data memory of the device, the table being polled regularly by the processor unit.
  • the table may include an association between environmental conditions such as temperature, device age, etc., and average expected amounts of energy generated by the energy converter under such conditions.
  • the device has a circuit which serves to determine the amount of energy currently available in the storage unit.
  • a circuit which serves to determine the amount of energy currently available in the storage unit.
  • Such a circuit can have high-resistance voltage parts as mentioned above. It would also be conceivable to determine the energy level stepwise by, for example, a predetermined number of comparators connected in parallel. In a stepwise determination of the currently available energy amount, it would be conceivable to also control the transmitter power of the radio unit in stages.
  • the transmission power is set by the processor unit so that the radio unit when sending a data packet, the determined amount of energy completely used up. If, however, due to a stepwise control of the transmission power, the processor unit can not set the transmitter power so that the determined amount of energy can be completely consumed, then the processor unit should control the transmitter power so that the radio unit at the sending of the data packet the determined energy amount at least 50th % advantageously to 90% and very advantageously used up to 98%. To consume this amount of energy, the transmission power must be increased in most cases inevitably. Only under ambient conditions or operating conditions where the energy converter usually generates the least energy or converts it is to be expected that the transmission power can not be increased.
  • the device can thus at normal ambient temperature z. B. at room temperature of 25 degrees higher transmission power, for example, twice or three times higher than before.
  • the range of a self-sufficient radio switch can thus be increased massively, according to the increase of the transmission power.
  • the device At ambient conditions, such as at 60 degrees, where the energy converter can typically generate less energy than usual, such as at ambient temperatures between 20 and 30 degrees, the device will in any case still be able to send out a complete message.
  • the device adjusts the transmitter power so that it is possible to send out the complete message several times, for example twice. Thus, a redundancy can be ensured.
  • the device has a circuit which serves to determine the amount of energy currently available in the storage unit.
  • the circuit may comprise a voltage divider and an A / D converter, wherein the A / D converter is adapted to sample the voltage divider to determine a voltage formed in the memory unit and provide as a digital voltage value of the processor unit, or that the Circuit has a voltage divider and that the processor unit comprises an A / D converter, wherein the A / D converter scans the voltage divider, so as to determine a voltage formed in the memory unit and provide it as a digital voltage value in the processor unit.
  • the transmission power can then be adjusted on the basis of the voltage value provided by the processor unit.
  • Such a logic switching block can, for example, itself serve to calculate a transmission power of the radio circuit to be set on the basis of the provided voltage value.
  • the processor unit is designed to form a characteristic that maps a functional relationship between a power consumption of the radio unit per transmitted data packet as a function of the transmission power of the radio unit, wherein the processor unit when setting the transmission power one of the characteristic readable transmission power in which the energy consumption for a data packet essentially corresponds to the energy amount of the storage device.
  • a transmission power can be selected for adjustment, which is associated with a certain energy consumption based on the characteristic, with this particular energy consumption of the energy amount of the storage unit when sending and / or repeated transmission of a complete data packet, is substantially exhausted.
  • a data packet according to the invention corresponds to a complete message that can be assembled by a radio-enabled device and transmitted as a radio signal.
  • the processor unit is designed to form the characteristic curve on the basis of the temperature value currently provided by the temperature sensor.
  • the energy consumption of the radio unit may also have a temperature dependence at a predetermined transmission power.
  • the processor unit may have a characteristic based on ambient measured values and corresponding measured values of the energy amount. Likewise, a table can be provided.
  • the device has a data storage unit, wherein a table is stored in the data storage unit, and wherein the processor unit is adapted to read based on the determined amount of energy in the table the energy amount associated transmission power and set for the radio unit.
  • the device is designed to approximate the currently available energy amount based on the ambient temperature, in which the device calculates the energy value on the basis of a reference value, the guide value depending on the expected electrical energy generated by a mechanical actuation of the device is to be expected at a measured temperature is given.
  • the guide value may correspond to an average value of energy values corresponding to the energy amounts determined in a previously performed calibration procedure.
  • the expected energy amounts or guideline values usually change with the ambient temperature.
  • the ambient temperature influences the efficiency of the energy converter.
  • the guideline can thus be read from a known relationship between the amounts of energy generated by the energy converter during actuation and the ambient temperature.
  • the electrical energy is stored in a memory unit
  • a processor unit of a radio unit is initialized
  • an amount of energy that is currently available in the memory unit is determined and / or approximated; a transmitting power of the radio unit is set on the basis of the energy amount,
  • the data packet is sent by the radio unit.
  • the energy is converted by an energy converter or generator into electrical energy.
  • the energy generated can be rectified and stored temporarily in, for example, a storage unit designed as a storage capacitor.
  • a switching power supply the voltage to the supply voltage of a configured as a microprocessor processor unit and on a designed as a high-frequency transmitter electronics transmission unit are passed and thus reduced.
  • Via a direction detection circuit the polarity of a generator pulse can be determined as required.
  • User data of a transmission protocol can be determined in the processor unit and the data packet can be assembled on the basis of this user data.
  • the energy in the memory unit can be determined via a high-impedance voltage divider, the voltage on the storage capacitor being sampled by means of an analog to digital converter integrated in the microprocessor.
  • the capacitor voltage can serve as a selection argument for an assignment in a stored table for determining the most suitable transmission power, and the transmission power can be adjusted on the basis of such a table or a stored characteristic curve.
  • Settings for the transmitter unit or the transmitter and the data packet can be written in a transmitter register. The data packet or the telegram or the telegrams can then be sent. If energy is still available in the storage unit, this energy can be dissipated by activating various consumers.
  • Fig. 1 is a block diagram of an embodiment of the invention
  • Fig. 2 is a graph of the effectiveness of an energy converter with respect to temperature; 3 shows a block diagram of an embodiment of the invention;
  • FIG. 5 shows a method sequence according to an embodiment of the invention.
  • Fig. 1 shows a block diagram of an embodiment of the invention.
  • An energy converter 3 is shown. This serves to convert energy from the environment of the device 1 into electrical energy either by some kind of energy harvesting or the energy converter 3 is actuated and a mechanical energy applied by the actuation is converted into electrical energy by means of an electromechanical generator.
  • the generator is, for example, an electromagnetic generator containing the copper coils.
  • a rectifier 19 is connected. An electrical signal output from the power converter 3 can thus be rectified.
  • the rectifier 19 may be configured, for example, as a diode bridge.
  • a memory unit 5 is connected, which is shown here as a capacitor 5.
  • the energy collected or generated by the energy converter 3 is thus stored first in the capacitor 5.
  • this energy is tapped by a microprocessor 9 and tied transmitters 21 of a radio unit 7 in order to operate the microprocessor 9 and the radio circuit 7.
  • a voltage converter 23 is usually required. The voltage can thus be reduced to a lower voltage level, which is suitable for insertion into the microprocessor 9.
  • a so-called voltage divider 17 is connected.
  • the voltage divider 17 can be made simple by connecting two resistors in series.
  • a derivative which in turn is connected to the microprocessor 9. It is thus possible to sample the voltage at the capacitor 5 at predetermined times T1, T2, T3 in order to determine how high the voltage on the capacitor 5 is or how much energy E T is stored in the capacitor 5.
  • the microprocessor 9 or the processor unit 9 serves on the one hand to check the amount of currently available energy ET and to operate the radio electronics 7.
  • the transmission power of the radio electronics 7 is set by the microprocessor 9.
  • the user data of a protocol of a data packet is compiled or processed by the microprocessor 9. This data packet is then sent out by means of the transmission electronics 21 or transmitter 21 via an antenna 25 out.
  • Such a system is conventionally designed so that the system typically stores much more energy in the capacitor 5 than is needed to send a message.
  • the background to this is that in certain environmental conditions, for example at high temperatures ( ⁇ ⁇ ⁇ >> T R ), it is not always possible to ensure that sufficient energy is generated by actuation of the energy converter 3.
  • the energy converter 3 is designed so that in the worst case, for example, at very high temperatures, sufficient energy E 0 is generated to operate the radio electronics 7 and in particular to be able to send a complete message or a data packet.
  • the currently available energy E T which is stored in the capacitor 5, are checked. For example, this check may take place once. It is also conceivable to check the energy ET at regular intervals. It is also possible to check the energy E before and after each transmission.
  • the microprocessor 9 can use this information about the amount. The information about the energy ET within the capacitor 5 can be used to adjust the transmission power of the radio electronics 7.
  • the amount of energy ET that is available is one predetermined
  • Threshold exceeds the transmission power of the radio electronics 7 can be increased in order to achieve a greater range of the transmitted signal.
  • the transmission power can also be set so that a complete message can be sent out twice or three times completely. Thus, a redundancy can be ensured.
  • FIG. 2 shows a graphical representation of the effectiveness of an energy converter 3 with respect to the temperature T ex t.
  • the energy converter 3 has an electromechanical generator, and is usually operated externally. The operating speed can vary. Therefore, an average course of the generated energy E A compared to the temperature is shown but also an upper limit of the energy profile EH when, for example, the energy converter 3 is operated at a very high speed and the design of the energy converter 3 is within optimal manufacturing tolerances for energy production optimal.
  • a minimum course of the energy production E L is shown for the case where the energy converter 3 is actuated slowly and the design of the energy converter 3 is the worst within given production tolerances for energy production.
  • the representation of the minimum energy E 0 as well as the energy curves in FIG. 2 serves only as an example and should not be interpreted as true to scale. Nevertheless, it can be seen that a rapid operation even at a high temperature, a non-negligible amount of energy can be left, even after a complete message from the radio electronics 7 is sent out.
  • the invention allows by the scanning of the storage unit 5, a re-use of this energy is left over. Traditionally, this energy has been dissipated derived status and thus rejected.
  • the microcontroller 9 can use this energy-related information to set, for example, the transmission power of the radio electronics 7 again and send the message repeatedly.
  • a temperature range T R is shown in Fig. 2, which corresponds to about 20 degrees Celsius, or normal room temperature.
  • a device 1 with an energy converter 3 and a radio electronics 7 can be used for example as a light switch.
  • a light switch is mainly used in ambient conditions in which room temperature TR prevails. It can be seen from FIG. 2 that as a rule a multiplicity of the minimum energy Eo always remains when used at about 20 degrees or at room temperature. By scanning the energy E T in the capacitor 5, the transmission power can thus optionally be doubled or increased several times. In another way, it is also possible to send out a message several times completely in order to avoid redundancy and to avoid data errors during the transmission of these radio signals.
  • Fig. 3 shows a further block diagram of an embodiment of the invention.
  • An energy converter 3 is present, with a switch button 27 which projects through a housing wall 29. The other components are all enclosed by the housing 29.
  • the energy is forwarded from the energy converter 3 to a storage unit 7.
  • a power supply line 31 is likewise provided between the capacitor 5 and a printed circuit board on which a processor unit 9 or a radio electronic unit 7 are located.
  • a voltage divider 17 is provided, which enables a sampling of the energy ET present in the capacitor 5.
  • an analog to digital converter (A / D) is interposed between the voltage divider 17 and microprocessor 9 or board.
  • the analog to digital converter can also be arranged on the board.
  • FIG. 3 additionally shows a signal line 33 between the board and a temperature sensor 13 which is located in the immediate vicinity of the energy converter 3.
  • the temperature sensor 13 may be used to form a predictive expectation regarding the amount of energy E L , A, H generated by an operation of the energy converter 3.
  • FIG. 4 shows an exemplary voltage curve on the capacitor 5.
  • the voltage V at the time 0 at the capacitor 5 corresponds to the voltage which is given after the energy converter 3 is actuated once. While an Initialmaschines, Einméphase ⁇ 1 decreases the voltage V across the capacitor 5 with the time Z from. Respectively, power is drawn from the microprocessor 9 and the amount of energy ET in the capacitor 9 is thereby reduced. If necessary, a certain waiting time W1 is shown thereafter. During this time, the voltage V across the capacitor 5 or the amount of energy E T decreases comparatively slowly. This decreasing energy can be caused for example by a leakage current. After the waiting time W1, the system is woken up or a second initialization phase ⁇ 1 can be carried out.
  • a second optional waiting time W2 is displayed as a result of the transmission.
  • the waiting times W1, W2, W3 may, for example, be required in the context of a "Listen Before Talk” (LBT) method, LBT methods are prescribed for use of certain frequencies in certain regions.
  • LBT Listen Before Talk
  • a second message or telegram or data packet is sent out.
  • the second message may be a repeat of the first message.
  • This cycle of waiting times W1, W2, W3 and transmissions S1, S2, S3 can be repeated until the energy ET in the storage unit 5 has been consumed.
  • the energy in the Memory unit 5 can be determined regularly during, for example, the waiting times W1, W2, W3. Shown are three sampling times T1, T2, T3
  • a fifth step 500 ambient energy and / or kinetic energy is converted from a mechanical actuation into electrical energy.
  • the electrical energy ET is stored in a memory unit 5.
  • a processor unit 9 of a radio unit 7 is initialized.
  • a data packet is prepared.
  • an energy amount E T that is currently available in the storage unit 5 is determined and / or approximated.
  • a transmission power of the radio unit 7 is set on the basis of the energy amount E T.
  • the data packet is transmitted by the radio unit 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Quality & Reliability (AREA)
  • Transmitters (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne un dispositif (1) comportant un convertisseur d'énergie (3) qui sert à convertir de l'énergie à partir de l'environnement du dispositif (1) et/ou par un actionnement mécanique du dispositif (1) en énergie électrique, une unité accumulatrice (5) qui sert à accumuler l'énergie électrique, et une unité radio (7) qui sert à recevoir et/ou à émettre des signaux radio, l'unité radio (7) réquisitionnant l'énergie électrique de l'unité accumulatrice (5), en particulier pour émettre des signaux radio, et l'unité radio (7) comportant une unité de processeur (9) qui sert à préparer un paquet de données à envoyer en tant que signal radio et à régler une puissance d'émission de l'unité radio, le dispositif (1) étant conçu pour déterminer et/ou approcher une valeur d'énergie qui est actuellement disponible dans l'unité accumulatrice (5), et l'unité de processeur (9) étant agencée pour régler la puissance d'émission de l'unité radio (7) sur la base de la valeur d'énergie déterminée et/ou approchée.
EP18708382.9A 2017-04-04 2018-02-26 Dispositif à puissance d'émission dépendant de l'énergie Withdrawn EP3607663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017205707.6A DE102017205707A1 (de) 2017-04-04 2017-04-04 Vorrichtung mit Energie abhängigen Sendeleistung
PCT/EP2018/054658 WO2018184764A1 (fr) 2017-04-04 2018-02-26 Dispositif à puissance d'émission dépendant de l'énergie

Publications (1)

Publication Number Publication Date
EP3607663A1 true EP3607663A1 (fr) 2020-02-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18708382.9A Withdrawn EP3607663A1 (fr) 2017-04-04 2018-02-26 Dispositif à puissance d'émission dépendant de l'énergie

Country Status (4)

Country Link
EP (1) EP3607663A1 (fr)
CN (1) CN110463057A (fr)
DE (1) DE102017205707A1 (fr)
WO (1) WO2018184764A1 (fr)

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Publication number Priority date Publication date Assignee Title
FR2802731B1 (fr) 1999-12-16 2002-01-25 Schneider Electric Ind Sa Dispositif autonome de commande a distance, appareil et installation electrique comportant un tel dispositif
JP2003133971A (ja) * 2001-10-29 2003-05-09 Jigyo Sozo Kenkyusho:Kk 自己発電型発信装置
US7466240B2 (en) * 2005-01-25 2008-12-16 The Retents Of The University Of California Wireless sensing node powered by energy conversion from sensed system
US8552597B2 (en) * 2006-03-31 2013-10-08 Siemens Corporation Passive RF energy harvesting scheme for wireless sensor
DE102008039205A1 (de) * 2008-08-22 2010-04-22 EPROTECH Reimann e.K. Jürgen Reimann Vorrichtung und Verfahren zur Überwachung einzelner Photovoltaikmodule einer Photovoltaikanlage
US20140095091A1 (en) * 2009-03-11 2014-04-03 Novatel Wireless, Inc. METHODS AND APPARATUS FOR MODELING, MONITORING, ESTIMATING and CONTROLLING POWER CONSUMPTION IN BATTERY-OPERATED DEVICES
WO2011112909A2 (fr) * 2010-03-12 2011-09-15 Sunrise Micro Devices, Inc. Communications peu consommatrices d'énergie
DE102012220418A1 (de) * 2012-11-09 2014-05-15 Zf Friedrichshafen Ag Induktionsgenerator und Verfahren zum Generieren eines elektrischen Stroms unter Verwendung eines Induktionsgenerators
CN203164687U (zh) * 2012-12-19 2013-08-28 湖南沛科能源科技有限公司 住宅环境智能控制系统
DE102013211015A1 (de) * 2013-06-13 2014-12-18 Zf Friedrichshafen Ag Schaltvorrichtung für einen Funktaster, Funktaster und Verfahren zum Erzeugen eines Schaltsignals einer Schaltvorrichtung
US9385560B2 (en) * 2013-11-12 2016-07-05 Qualcomm Incorporated Methods, devices and systems for self charging sensors
US9706269B2 (en) * 2015-07-24 2017-07-11 Hong Kong Applied Science and Technology Research Institute Company, Limited Self-powered and battery-assisted CMOS wireless bio-sensing IC platform

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Publication number Publication date
DE102017205707A1 (de) 2018-10-04
WO2018184764A1 (fr) 2018-10-11
CN110463057A (zh) 2019-11-15

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