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公开(公告)号：US20230397553A1
公开(公告)日：2023-12-14
申请号：US17835388
申请日：2022-06-08
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA , Luigi MALPIGHI , Pio QUARTICELLI
CPC classification number: A01G25/167 , H02N2/185 , H02K7/1823
Abstract: An irrigation system includes a first valve fluidly-coupled between an inlet pipe and an outlet pipe, and a second valve fluidly-coupled between the inlet pipe and a power harvester. The power harvester generates electrical power at a power output in response to fluid flowing therethrough. An energy storage unit is coupled to the power output to store generated voltage. Comparison circuitry compares the generated voltage to a threshold. Control circuitry causes the second valve to permit fluid to flow therethrough when the generated voltage is less than the threshold, causing generation of the electrical power by the power harvester when the generated voltage is less than the threshold. The comparison circuitry causes the second valve to prevent fluid flow when the generated voltage is at least equal to threshold, ceasing generation of the electrical power by the power harvester when the generated voltage is at least equal to the threshold.
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公开(公告)号：US20210175753A1
公开(公告)日：2021-06-10
申请号：US17109345
申请日：2020-12-02
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA , Alessandro FINOCCHIARO
Abstract: A first RF-to-DC circuit receives a radiofrequency signal and produces a first converted signal delivered to an energy storage circuit. A second RF-to-DC circuit, which is a down-scaled replica of the first RF-to-DC circuit, produces a second converted signal from the radiofrequency signal that is indicative of an open-circuit voltage of the first RF-to-DC circuit. The first RF-to-DC section includes N sub-stages, with a sub-set of sub-stages being selectively activatable. A window comparison of the second converted signal generates a first signal and a second signal indicative of whether the second converted signal is within a range of values proportional to a voltage reference signal. The sub-set of sub-stages is selectively deactivated, respectively activated, when the performed window comparison has a first result, respectively, a second result.
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公开(公告)号：US20200303952A1
公开(公告)日：2020-09-24
申请号：US16815770
申请日：2020-03-11
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA
Abstract: An energy-harvesting generator provides energy for storage in a capacitor. A sensing circuit senses a voltage across the capacitor and generates an activation signal as a function of the sensed voltage. The activation signal is switches from a first value to a second value when the sensed voltage reaches an upper threshold and switches from the second value to the first value when the sensed voltage reaches a lower threshold. A signal transmitter powered by stored energy in the capacitor responds to the activation signal being switched to the second value by activating and transmitting a transmission signal. The signal transmitter further responds to the activation signal being switched to the first value by discontinuing transmission of the transmission signal and deactivating. A duration of time elapsing between de-activation and activation of the transmitter is indicative of an amount of energy harvested by the energy-harvesting electric generator.
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公开(公告)号：US20230021993A1
公开(公告)日：2023-01-26
申请号：US17860965
申请日：2022-07-08
Inventor： Salim BOUCHENE , Jean CAMIOLO , Roberto LA ROSA
Abstract: The present disclosure relates to a method for sanitization of a surface by emission of a plurality of sanitization wavelengths, and to a device for implementing the method. The method comprises emitting light using first LEDs configured to emit the sanitization wavelengths, receiving, by a circuit, a feedback signal from a light sensor indicating a light intensity received by the light sensor during the light emission, and controlling the first LEDs with the circuit based on the feedback signal.
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Patent Agency Ranking
公开(公告)号：US20190265742A1
公开(公告)日：2019-08-29
申请号：US16283067
申请日：2019-02-22
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA
Abstract: A first generator produces a first signal that is supplied to an energy storage circuit. Energy transfer circuitry coupled to the energy storage circuit transfers energy stored in the energy storage circuit to an output node. A driver circuit coupled to the energy transfer circuitry switches the energy transfer circuitry between a state where energy from the first signal is stored in the energy storage circuit and a state where energy stored in the energy storage circuit section is delivered to the output node. A voltage at the energy storage circuit varies between an upper value and a lower value around a voltage setting point. A second generator, which is a scaled-down replica of the first generator, produces a second signal that is indicative of an open-circuit voltage of the first generator. The driver circuit uses the second signal to set the voltage setting point.
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公开(公告)号：US20200336006A1
公开(公告)日：2020-10-22
申请号：US16849370
申请日：2020-04-15
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA , Alessandro FINOCCHIARO
Abstract: A first Radio-Frequency-to-Direct-Current (RF2DC) transducer receives a first signal from a sensing antenna and generates energy stored by an energy storage circuit. An energy transfer circuit is controllably switched between an energy storage state where energy is stored in the energy storage state and an energy transfer state where stored energy is transferred to a load. The voltage at the energy storage circuit is alternatively variable between an upper value and a lower value around a voltage setting point. A second RF2DC transducer, which is a down-scaled replica of the first RF2DC transducer, produces a second signal indicative of an open-circuit voltage of the first RF2DC transducer. The voltage setting point is set as a function of the second signal indicative of the open-circuit voltage of the first RF2DC transducer.
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公开(公告)号：US20200287453A1
公开(公告)日：2020-09-10
申请号：US16802741
申请日：2020-02-27
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA , Salvatore BAGLIO , Carlo TRIGONA
Abstract: An energy harvester includes an elongated tubular casing extending around a longitudinal axis between opposed first and second ends. A body is arranged in the casing. A helical electrical winding is wound around the longitudinal axis. The body is arranged to move along the longitudinal axis with alternate motion away from the first end towards the second end and away from the second end towards the first end. As a result of this alternate motion, an electromotive force is produced in the at least one helical electrical winding. Furthermore, at least one of the first and second ends includes a piezoelectric transducer that is configured to co-operate in a kinetic energy transfer relationship with the at least one body to generate an electric voltage as a result of the at least one body reaching, in the alternate motion, an end-of-travel position towards the piezoelectric transducer.
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公开(公告)号：US20230027724A1
公开(公告)日：2023-01-26
申请号：US17861807
申请日：2022-07-11
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA
Abstract: A wireless device includes an energy harvester and an energy storage that operate in a sequence of energy harvesting cycles to alternately harvest energy and release energy for supplying the wireless device. The wireless device also includes a processing circuit and a wireless communication circuit. A configuration method for the wireless device includes first step where a base station receives a signal from the wireless device indicating wireless communication circuit entry into a receiving operation mode. In a second step, the base station transmits configuration data to the wireless device. The received configuration data is temporarily stored in a memory area of the wireless communication circuit. In a third step, the temporarily stored configuration data is transmitted from the wireless communication circuit to the processing circuit for storage in a memory area. The second and third steps are carried out during distinct energy harvesting cycles of the wireless device.
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公开(公告)号：US20200350781A1
公开(公告)日：2020-11-05
申请号：US16862850
申请日：2020-04-30
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto LA ROSA , Alessandro FINOCCHIARO
Abstract: A radiofrequency-powered device such as a wireless passive sensor node, for instance, comprises a radiofrequency energy harvesting circuit configured to be coupled to an antenna to harvest radiofrequency energy captured by the antenna from a radiofrequency signal. The radiofrequency energy harvesting circuit is configured to be coupled to an energy storage component to store therein energy harvested via the radiofrequency energy harvesting circuit. The device comprises user circuitry configured to be supplied with energy harvested via the radiofrequency energy harvesting circuit and to operate in accordance with one of a plurality of configurations as a function of configuration data supplied thereto. A receiver circuit coupled to the radiofrequency energy harvesting circuit is configured to receive a configuration data signal modulating the radiofrequency signal and supply to the user circuitry configuration data extracted from the configuration data signal received.
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