180 results about "Ambient energy" patented technology

The invention provides a low-power-consumption self-repairing and energy self-supplying mine dust monitoring sensor network system, which comprises a plurality of sensor nodes and a central monitoring platform, and is characterized in that data of all the sensor nodes are transmitted to the central monitoring platform in real time; the sensor network synchronizes environmental parameters, and performs data analysis, processing and visual display on the central monitoring platform; a plurality of sensors are integrated in each sensor node, and the sensors are used for monitoring different environmental parameters in a mine environment; the types of the sensors comprise a dust concentration sensor and a temperature and humidity sensor, and the environmental parameters comprise dust concentration, temperature and humidity; the problems of long-time operation, insufficient energy supply, node failure, unstable data transmission and the like of a dust monitoring system in a complex mine environment are solved. The system integrates a multi-source environment energy collection module, and the technologies of mechanical vibration, airflow kinetic energy, thermoelectric power generation and the like are adopted, so that self-power supply of sensor nodes is realized, and the requirement of frequently replacing batteries or wiring is avoided.

Disclosed is a method of gathering data from a hybrid RFID chip to determine usage of an item or article of clothing using a mobile device like a phone, laptop, or tablet. The hybrid RFID chip consists of a processor, a memory, a radio transceiver, a power harvesting antenna, and an impedance circuit that converts ambient radio frequency (RF) energy to electrical energy. The RFID chip receives a first power level from ambient RF energy and periodically broadcasts an identity. The mobile device can receive the broadcast identity, store the identity, transmit the identity and location to a remote server, and receive a notification message from the remote server. The remote serve can determine usage of the item or article of clothing by comparing current records to previous records of RFID chip identity, location, and mobile device application identity.

The invention relates to an environment energy management optimization method and system for a tag chip, and the method comprises the steps: obtaining the temperature data and environment electromagnetic data of a chip environment, and carrying out the spatial distribution analysis, and obtaining the corresponding environment parameter characteristics; acquiring real-time power consumption data of the tag chip, and performing correlation analysis on the real-time power consumption data and the environmental parameter characteristics to obtain corresponding energy consumption information; acquiring chip circuit acquisition data of the tag chip, and performing resonance frequency analysis on the chip circuit acquisition data according to a preset resonance optimization algorithm; performing fault diagnosis on the chip circuit acquisition data to obtain corresponding system state information and a corresponding system operation prediction scheme; and performing strategy optimization on the initial energy scheduling scheme according to the system operation prediction scheme to obtain a corresponding global optimization strategy. According to the invention, the system can flexibly cope with energy demand changes of different application scenes.

The invention provides a novel direct-current energy collection and management chip and an operation method thereof. The chip comprises a low-voltage cold start loop, a novel MPPT algorithm energy collection circuit and an energy management circuit. The low-voltage cold start loop is used for exciting an internal voltage conversion circuit at a low voltage level, so that the circuit is transited to a normal working state; the novel MPPT algorithm energy collection circuit is used for collecting energy, collecting and converting environment energy into electric energy, and realizing maximum power tracking through the transient enhanced MPPT algorithm circuit; and the energy management circuit is used for judging the state of the CSTOR, inputting a judgment result into the control module to generate different enable signals UV and EN, and starting corresponding management modes Q1 and Q2. According to the invention, the charging management circuit is started to store excess energy in a secondary energy storage element super capacitor or a lithium ion battery, and the DC-DC step-down converter is started to output a stable voltage for a system load, so that high-efficiency management of photovoltaic, thermoelectric and other direct-current environment energy is realized.

A method for receiving, by an ambient power (AMP) device that harvests environmental energy, an identification (ID) request frame from a powered wireless device. The ID request frame includes one or more frame-exchange parameters and an authentication and key management (AKM) method. The method includes retrieving, from memory, a secret that is shared with the powered wireless device, determining, using the secret, one or more first AKM parameters, and transmitting, to the powered wireless device, by the AMP device, an ID response frame including an ID of the AMP device, at least one of the one or more frame-exchange parameters and the one or more AKM parameters with which the powered wireless device is to be mutually authenticated with the AMP device and to generate an encryption key to initiate an encrypted wireless communication session.

One or more embodiments of the present specification relate to an NFC passive tag identification system, method, and NFC device. The system includes an energy harvesting circuit for harvesting and storing environmental energy. The system also comprises a radio frequency transmitting circuit which is connected with the energy collection circuit, is powered by the environment energy, and is used for transmitting an excitation signal for enabling the terminal equipment to quit the low power consumption card detection LPCD mode. In addition, the system also comprises an NFC label circuit which is used for sensing an NFC detection signal sent by the terminal equipment so as to communicate with the terminal equipment.

Various aspects of the present disclosure relate to performing confidentiality and / or privacy protection for communications between devices, such as ambient energy-powered devices. In some cases, the IoT devices and / or IoT servers can perform key generation using secret parameters that are only known to the devices / servers as input into a hash function. For example, the IoT server and IoT device can utilize a device identifier as a secret parameter, which is input, along with a nonce, into hash operations or functions to generate security keys (e.g., a key K). In some cases, key generation can include time information or other similar information to ensure freshness of the security K during generation.

A dual-mode environment energy collection system comprises a radio frequency energy collection module, a light energy collection module, an energy storage module and a power output module. In the radio frequency energy collection module, an antenna receives radio frequency energy and then generates alternating current, the alternating current is converted into direct current through a rectifier and temporarily stored in a capacitor, and a DC-DC conversion circuit boosts electric energy in the capacitor and then transmits the boosted electric energy to an energy storage module; in the light energy collection module, a solar cell converts light energy into direct current, and when the voltage of the direct current reaches a cold start starting threshold value, a cold start circuit starts to work and supplies energy to an open circuit monitoring circuit and an MPPT circuit; the open circuit monitoring circuit monitors the voltage of the solar cell regularly and provides the maximum power point tracking direction for the MPPT circuit. The energy storage module stores the electric energy from the two collection modules; in the power output module, the power management circuit determines an opening threshold of the boost conversion circuit, and after the electric quantity voltage of the energy storage module reaches the threshold, the boost conversion circuit carries out boost conversion on the voltage of the energy storage module.

A method including determining, by an ambient power (AMP) device that harvests environmental energy, one or more first authentication and key management (AKM) parameters, and transmitting, by the AMP device to a powered wireless device, an initialization request frame comprising one or more frame-exchange parameters and the one or more first AKM parameters with which the powered wireless device is to establish an encrypted wireless communication session with the AMP device.

The invention discloses a data transmission method and device, a first terminal and first equipment, and belongs to the technical field of communication, and the data transmission method comprises the steps that the first terminal obtains a first command sent by the first equipment; the first terminal is an environment energy enabled Internet of Things AIoT device, the first command is carried in a specific common control channel, and the first command is used for assisting the first terminal in executing a target service.

A method includes transmitting, by an anchor wireless device over a first radio frequency (RF) band, a first wireless signal to a client wireless device. The client wireless device is an ambient power (AMP) device that harvests environmental energy. The first wireless signal includes a data packet requesting information from the client wireless device. The method further includes receiving, by the anchor wireless device over a second RF band, a second wireless signal from the client wireless device. The second wireless signal includes a data packet responding with the requested information.

The invention discloses a wood-based evaporation-driven photovoltaic power generation device and a preparation method thereof.The preparation method comprises the steps that natural beech serves as a matrix, and a surface gradient hydrophilic structure is constructed through pretreatment, deep eutectic solvent DES selective delignification treatment, citric acid modification carboxyl introduction and surface silane modifier spraying in sequence; directional transmission of water is realized through an anisotropic micro-channel reserved in wood, and stable water vapor flow induction potential is generated by combining ion selective migration induced by surface fixed charges and an interface evaporation process driven by a top photo-thermal layer, so that electric energy is continuously output. The device has good environmental adaptability, can stably output voltage and power in a high-humidity or high-salt environment, and shows excellent durability and expansibility. The method is environmentally friendly, the process is simple, functional high-value utilization of wood can be achieved, and the method is suitable for flexible electronic or distributed energy supply systems such as low-power-consumption sensors and environment energy collectors.

The invention provides a backscatter communication method and related equipment, and relates to the technical field of wireless communication. The method comprises the following steps: receiving the total amount of service data to be transmitted and an environment energy storage value sent by a backscattering terminal; determining a required energy value according to the total amount of the to-be-transmitted service data; under the condition that the required energy value is smaller than the environment energy storage value, the working mode of backscatter communication is determined to be a first communication mode, working mode information is sent to the backscatter terminal so that the backscatter terminal can conduct backscatter communication according to the first communication mode, and the working mode information comprises the first communication mode and the second communication mode. The first communication mode is to transmit all to-be-transmitted service data at one time through the stored environment energy. According to the invention, the energy loss of the backscattering terminal is saved, and the energy loss of the network equipment is also saved.

The invention relates to the field of direct-current energy taking, in particular to a steel rail potential direct-current energy taking device and method applied to subway sensor power supply. In order to solve the problems of sensor power supply in a subway direct-current power supply system, for example, cable laying is difficult, battery maintenance cost is high, and environment energy collection is limited, the device utilizes steel rail potential to carry out efficient energy collection. The device comprises a main power module and a control module, wherein the main power module comprises a rectifier bridge, a double-MOSFET structure, a voltage-stabilizing filter capacitor Cbus and an energy collector; and the control module executes a maximum power point tracking strategy through the voltage measurement interface and the grid control interface. The strategy comprises a periodic open-circuit voltage acquisition stage, an optimal voltage regulation stage and a voltage holding stage, the input voltage is stabilized at 1 / 2 of the open-circuit voltage by controlling the on-off state of the double MOSFETs, and the Cbus voltage is dynamically maintained to fluctuate around the optimal reference voltage by + / -5%. Stable and efficient power supply is realized, and the maintenance cost is reduced.

A method comprising: determining, by an ambient power (AMP) device harvesting ambient energy, one or more first authentication and key management (AKM) parameters; and transmitting, by the AMP device to a powered wireless device, an initialization request frame including one or more frame exchange parameters and the one or more first AKM parameters with which the powered wireless device is to establish an encrypted wireless communication session with the AMP device.

A method for fabricating an ambient energy converter is described, comprising a plate-shaped support substrate consisting of a first conductor material as the first electrode and a layered structure arranged on this substrate. This structure consists of a layer of ferroelectric material and a layer of a second conductor material, different from the first conductor material, as the second electrode. The two conductor materials have different concentrations of free electrons. The ferroelectric material comprises one or more ferroelectric semiconductors. Ferroelectric semiconductors used as the ferroelectric material are selected from the list of sodium nitrite, semiconductor ceramics based on barium titanate, lithium niobate, potassium niobate, lead titanate, etc.The process comprises the following steps: - providing a plate made of the conductor material intended for the first electrode as a substrate, - subjecting the substrate to at least one surface treatment, - applying the layer of ferroelectric material (BTO layer) to a side of the substrate intended as the front, - masking at least the edges of the BTO layer on the front of the substrate, leaving at least one area within the edges of the BTO layer free, and - applying the conductor material intended for the second electrode to the area left free from masking.

The present invention relates to the field of environmental monitoring, and discloses an integrated self-powered environmental monitoring system, which includes a self-powered unit, an environmental element monitoring unit, a data acquisition unit, a battery unit, a power management unit and a remote management platform. The self-powered unit collects environmental energy and converts it into electrical energy to ensure the power supply of the system. The environmental element monitoring unit monitors the characteristic parameters of the micro-meteorological environment in real time; the data acquisition unit processes and stores data, and interacts with the remote management platform through the radio frequency / antenna unit. The remote management platform uses the monitoring data analysis unit to judge whether the environment is abnormal and issue early warnings. The beneficial effects are remarkable. The integrated design simplifies the installation process and improves the construction efficiency; the self-powered function solves the power supply problem in remote areas; the integrated power management and remote interaction system is convenient for real-time maintenance and adjustment, and has good application prospects in the field of environmental monitoring.

The invention discloses an active intelligent lock system and a control method thereof, and belongs to Internet of Things safety equipment. The active intelligent lock system is provided with an environment energy collection module, a dual-channel power management module, a dynamic power consumption controller, a multi-mode authentication module, an authorization authentication module, a communication module and a master control MCU (Microprogrammed Control Unit), the environment energy collection module and the dual-channel power management module can improve the power supply endurance of the active intelligent lock system and the safety emergency processing of power supply faults, and the dynamic power consumption controller can provide three different power consumption modes to optimize the dynamic energy consumption in multiple use scenes, so that the utilization rate of electric energy is improved; the multi-mode authentication module and the authorization authentication module provide a multi-person combined unlocking mechanism, the industrial-grade centralized supervision requirement and intelligent management are met, and the use safety and operation convenience of the active intelligent lock system are effectively improved.

The present invention proposes an energy management method for a self-driven wireless sensor node. The method can calculate the captured environmental energy intensity according to the power consumption state of the energy storage element after power-on initialization, and then determine the working cycle of the working mode of "continuously collecting and sending after power-on until the power is consumed to the low-voltage threshold and re-entering the charging cycle" or "calculating the sleep and wake-up cycle after power-on, and then performing periodic sleep, wake-up, data collection and transmission, and sleep cycle according to the cycle", and select the working mode with the shortest working cycle to maximize energy utilization efficiency.

Various aspects of the present disclosure relate to performing confidentiality and / or privacy protection for communications between devices, such as ambient energy-powered devices. In some cases, the loT devices and / or loT servers can perform key generation using secret parameters that are only known to the devices / servers as input into a hash function. For example, the loT server and loT device can utilize a device identifier as a secret parameter, which is input, along with a nonce, into hash operations or functions to generate security keys (e.g., a key K). In some cases, key generation can include time information or other similar information to ensure freshness of the security K during generation.

The invention belongs to the technical field of intelligent building materials, and particularly relates to a self-cleaning intelligent window with a water power generation function and a femtosecond laser preparation method of the self-cleaning intelligent window. An SMP layer with a micro-column array structure is precisely machined through femtosecond laser, an electrode is integrated through a conducting medium and ITO glass, mechanical energy of raindrops and condensate drops is effectively captured in combination with a surface super-hydrophobic coating, and the mechanical energy is converted into electric energy; the self-adaptive adjustment of the light transmittance along with the temperature is realized through the phase change characteristic of the temperature-sensitive hydrogel. Through the interface coupling design of the SMP / ITO / hydrogel three-layer structure, the light transmittance dynamic regulation and control function, the environment energy recovery function and the self-cleaning function are integrated, the technical bottlenecks that a traditional intelligent window is fast in light transmittance attenuation, single in function and waste in energy are solved, and a multifunctional collaborative optimization solution is provided for building energy saving.

The invention provides a self-luminous vehicle logo control method based on environmental energy collection and storage. The method comprises the following steps that S1, a solar panel, a vibration energy collector and a thermoelectric generator which are connected in parallel are used for supplying power to a dual-mode energy storage system; s2, a dual-mode energy storage system is used for storing electric energy and supplying power to the flexible light-emitting display unit, and the dual-mode energy storage system is formed by connecting a super capacitor and a miniature lithium battery in parallel; s3, performing ambient light induction and energy management by using an ambient light induction module and an energy management module of the intelligent control module; and S4, the flexible light-emitting display unit is used for providing a light source for the vehicle logo identification. The vehicle logo has the advantages that self-continuous light emitting and intelligent environment adaptation of the vehicle logo are achieved, and the energy-saving performance and reliability of the vehicle logo are improved.

The invention discloses a calibration time self-adaptive MPPT (Maximum Power Point Tracking) method for an environmental energy collection circuit. The method comprises the following steps of: starting the energy collection circuit; confirming the maximum power point, and recording the characteristic voltage V1 of the input end of the energy collection circuit at the moment; after the interval calibration time T0, the maximum power point is confirmed again, and the characteristic voltage V2 of the input end of the energy collection circuit at the moment is recorded; if V1-V2 is greater than V, reducing T from T0 to obtain new interval calibration time T1, otherwise, increasing T from T0 to obtain T1; and repeating the above process until T1 approaches or reaches the minimum calibration time Tmin, or T1 reaches the maximum calibration time Tmax, and terminating. The method can reduce the tracking power consumption of the energy collection circuit, and is suitable for collecting environment energy such as light energy, electromagnetic energy and heat energy.

Devices, networks, systems, methods, and processes for polling a plurality of ambient power devices and generating one or more charging schedule for the plurality of ambient power devices are described herein. An Access Point (AP) can transmit an energy poll trigger frame to one or more ambient power devices. The one or more ambient power devices can transmit one or more energy poll frames in response to the energy poll trigger frame. The one or more energy poll frames can be indicative of one or more energy parameters associated with the one or more ambient power devices. The AP can generate one or more charging schedules for the one or more ambient power devices based on the one or more energy parameters. The AP may generate and transmit one or more charging frames based on the one or more charging schedules to charge the one or more ambient power devices.

Methods and devices for enhancing the usage of random-access uplink radio resources by wireless devices, for example, wireless devices harvesting ambient energy. The method being implemented by a user equipment, UE, of the wireless communication system, wherein the UE comprises a communication unit (XX) configured to exchange data with a radio access network, RAN, of the wireless communication system, wherein the method comprises: having a mapping between UE types, data volumes to be transmitted, and random-access preamble configurations, selecting based on UE types and data volumes to be transmitted a corresponding random-access preamble configuration, using the selected random-access preamble configuration for performing an uplink transmission.

There are provided a frame transmission method, a communication device and a storage medium. The method includes: a first device sending or receiving a MAC frame, wherein the MAC frame has a first frame structure, and the first frame structure is different from conventional frame structures; and the first device is a communication device based on environmental energy.

Backscatter Device (BKD) placement and placement calibration may be provided. A plurality of ambient energy sources in a Three-Dimensional (3D) space may be identified and mapped. Each of the plurality of ambient energy sources may be categorized as one of the following: a stationary and controllable ambient energy source, a stationary and uncontrollable ambient energy source, and a mobile ambient energy source. An amount of ambient energy available at each of a plurality of sub-spaces of the 3D space may be determined. The amount of ambient energy available at each of the plurality of sub-spaces may be determined by determining a first amount of ambient energy that is continuously available and a second amount of ambient energy that is likely available at each of the plurality of sub-spaces of the 3D space.

A method includes broadcasting, by a powered wireless device, a survey request frame to a plurality of ambient (AMP) devices that harvest environmental energy, wherein the survey request frame comprises a unique public key to be used by each AMP device, of the plurality of AMP devices, to generate a survey response frame. The method includes using, within the survey request frame, a first random address as a source media access control (MAC) address and one of a broadcast address or a group address as a destination MAC address. The method includes determining, from each respective survey response frame, whether a corresponding AMP device of the plurality of AMP devices is accessible from which to securely obtain data.

A system includes an array of antennas that are controllable to generate a directed beam of radio frequency (RF) radiation and an anchor wireless device coupled to the array of antennas. The anchor wireless device transmits, via the array of antennas, a first wireless signal as a first directed beam at a first azimuth towards first identification (ID) tags. The first ID tags are ambient power (AMP) devices that harvests environmental energy. The first wireless signal includes a data packet requesting information. The anchor wireless device further receives, via the array of antennas, second wireless signals from the ID tags, each second wireless signal including a second data packet responding with the requested information for a corresponding ID tag of the ID tags.

The invention discloses a liquid visual detection device based on a rotary friction nanometer generator, belongs to the field of environmental energy collection and sensing, and solves the problems that a traditional device depends on external power supply, maintenance is complicated, mechanical energy is wasted, and detection visualization is poor. The device comprises a rotary friction nanometer power generation module, an electric energy storage module, an electronic switch, an MCU master control module, a Bluetooth transmission module, a touch ACEL module, an array ACEL module and an intelligent visual acquisition module. The power generation module converts rotary mechanical energy into electric energy, and the storage module stores power to a critical value for power supply; the touch ACEL has different luminous intensities due to different liquids, the visual module acquires images and analyzes the images, the Bluetooth transmits data to the MCU, the MCU controls and displays logic, and the array ACEL visualizes coded information. The device realizes self power supply, reduces maintenance, improves detection intuition, is compact in structure and high in applicability, and can be used for liquid detection in the fields of environmental monitoring, industrial production and the like.