CN202076853U - Wireless charging and feeding device of wireless sensor network node - Google Patents

Wireless charging and feeding device of wireless sensor network node Download PDF

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Publication number
CN202076853U
CN202076853U CN2011200668664U CN201120066866U CN202076853U CN 202076853 U CN202076853 U CN 202076853U CN 2011200668664 U CN2011200668664 U CN 2011200668664U CN 201120066866 U CN201120066866 U CN 201120066866U CN 202076853 U CN202076853 U CN 202076853U
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China
Prior art keywords
power supply
sensor network
wireless
fill
slave
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CN2011200668664U
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Chinese (zh)
Inventor
吴剑锋
李建清
李小敏
王佚楠
李健楠
杜莉
唐健
李蓬勃
刘弘逸
李冬
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东南大学
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Priority to CN2011200668664U priority Critical patent/CN202076853U/en
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Publication of CN202076853U publication Critical patent/CN202076853U/en

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Abstract

The utility model relates to a wireless charging and feeding device of a wireless sensor network node, which is provided with a wireless electric power transmission system consisting of a charging and feeding host machine and a node charging and feeding slave. The charging and feeding host machine comprises a control processor, a scanning frequency source, an energy emitting antenna and a wireless communication module which is used for interacting charging and feeding information with the sensor network node charging and feeding slave in real time; the energy emitting antenna is a cake-shaped one-dimensional coil which rotates in a three-dimensional space and is controlled by the control processor; the sensor network node charging and feeding slave comprises a node processor, a multidirectional coupling energy receiving antenna, a rectifying circuit, a charging and feeding voltage detecting circuit, a charging and feeding circuit and a wireless communication module which is used for correspondingly interacting with the wireless communication module of the charging and feeding host machine; and the multidirectional coupling energy receiving antenna is a combination of three coils which are arranged in an orthogonal direction.

Description

A kind of wireless charging and feeding device of wireless sensor network node

Technical field

The utility model relates to the wireless power supply technique that fills to electric equipment, relates in particular to a kind of wireless charging and feeding device of wireless sensor network node, belongs to the sensor network technique field.

Background technology

The develop rapidly of sensor technology, electronic technology, wireless communication technology and low-power-consumption embedded technology, be pregnant with wireless sensor network (Wireless Sensor Networks, and brought a change of information perception with its low-power consumption, low cost, characteristics distributed and self-organizing WSN).Wireless sensor network is a kind of network that is made of sensor node, monitoring in real time, perception and acquisition node are disposed the various information (as physical phenomenons such as light intensity, temperature, humidity, noise and harmful gas concentrations) of the interested perceptive object of observer in district, and send wirelessly after these information are handled, finally send to the observer by wireless network.Wireless sensor network has wide application prospect in fields such as military surveillance, environmental monitoring, medical treatment and nursing, Smart Home, industrial production control and commerce.A lot of people think, the importance of this technology of wireless sensor network can compare favourably with the internet: make computer can visit various digital informations and can where be kept at regardless of it as the internet, sensor network can be expanded the ability that people and real world carry out remote interaction.Yet from a lot of aspects, present wireless sensor network is just as far away from internet in 1970, and the internet has only connected less than 200 universities and military laboratory at that time, and the researcher is also at various communications protocol of test and addressing scheme.And now, most of sensor networks have only connected less than 100 nodes, and more node and communication line can make it become very complicated unreasonable and can't operate as normal.The price of single-sensor node is also not cheap at present in addition, and battery life also can only be kept some months under best situation.The self-contained energy shortage of sensor node, and the battery of node generally is difficult for changing, in a single day energy exhausts, and this node just can not carry out the function of data acquisition and route so, directly influences the robustness and the life cycle of whole sensor network.Therefore, realize the long-life power supply of sensor network, will play significant impetus to its large-scale engineering applications, thereby advance the notion of " Internet of Things " further to be converted into reality.

Because the node battery is difficult to take out, the module that can only add harvest energy at node, available form of energy has a lot, as the bioelectricity of big tree, solar energy, wind-force, vibration etc., can not stablize use but these schemes also are subjected to the restriction of environment, weather etc.In order not reduce the flexibility of node automatically for wireless sensor network node fills power supply, can be widely applied to more multiple environmental conditions again, we have introduced the wireless power supply technique that fills.The wireless power supply unit that fills has a lot of advantages.At first, the connector that has not had to expose improves a lot the fail safe of a lot of equipment, reliability.And for different electronic products, power interface can be corresponding automatically, and reflector and receiving chip can be started working simultaneously automatically in the time of need filling power supply, and two sides will close automatically when being full of electricity, have avoided unnecessary energy consumption.It can also discern different equipment automatically and energy requirement carries out personalization work.Secondly, can be to being difficult to wired position of filling power supply, fill power supply as under water, in the extreme environment, human body etc.

The wireless power supply technique that fills has three kinds of implementations: electromagnetic induction, magnetic resonance and microwave.At present, there have been a lot of companies that the wireless power supply technique that fills is applied to the power supply of filling that compact electric apparatus fills power supply and electric automobile both at home and abroad.Consideration combines the wireless power supply technique that fills of selection with wireless sensor network technology with the wireless power supply technique that fills, and will give full play to the characteristic that wireless sensor network freely distributes, and makes wireless network really break away from the restriction of cable.Simultaneously, wireless power can fill power supply for a plurality of nodes simultaneously, and energy conservation is also more effective.But no matter compact electric apparatus still is the Large Electric automobile, the at present widely used supply power mode of filling is the electromagnetic near field coupling, transmitting coil and receiving coil are closely pressed close to (be generally millimeter level or a Centimeter Level), obviously and be not suitable for the wireless sensor network of node random distribution.And it is bigger that electric automobile and household electrical appliances wireless fills the general power of power supply unit, and sensor node all is the low power dissipation electron device, so, can not directly directly introduce the wireless sensor network field with having the wireless power supply unit that fills now.Moreover the microminiaturization of sensor network nodes is a main trend, so node electric energy receiving equipment volume also need be as far as possible little.

Summary of the invention

It is a kind of with wireless sensor network technology and the wireless wireless charging and feeding device that fills a kind of wireless sensor network node that power supply technique combines that the purpose of this utility model is to provide, this device can judge automatically whether wireless sensor network node needs to fill power supply, and fill power supply for node is wireless automatically, and by scanning frequency and rotation transmitting antenna, principal and subordinate's machine is operated near the resonance point, has improved wireless efficient and distance of filling power supply.

The utility model adopts following technical scheme: a kind of wireless charging and feeding device of wireless sensor network node is characterized in that: be provided with and fill the wireless sensor network electric energy transmission system that power supply main frame and sensor network nodes fill the power supply slave machine, wherein:

Fill the power supply main frame comprise processor controls, swept frequency source, energy transmitting antenna and be used for sensor network nodes fill the power supply slave fill the power supply information realtime interactive wireless communication module, the main frame wireless communication module is connected with processor controls is two-way, processor controls is connected with swept frequency source is two-way, and swept frequency source output connects the energy transmitting antenna; The processor of the low-power consumption of A/D modular converter is contained in processor controls system, and swept frequency source system is by the voltage controlled oscillator of processor controls control, and energy transmitting antenna system is by the three dimensions rotation pie one dimension coil of processor controls control;

Sensor network nodes fill the power supply slave comprise modal processor, multidirectional coupling energy reception antenna, rectification circuit, fill the supply power voltage testing circuit, fill power supply circuits and with fill power supply main frame wireless communication module corresponding mutual wireless communication module, multidirectional coupling energy reception antenna output connects rectification circuit, rectification circuit output connects fills power supply circuits and modal processor, fill power supply circuits output connected node processor, modal processor output connects the slave wireless communication module; Multidirectional coupling energy reception antenna is three coil combination of arranging by orthogonal direction.

When the node supply power voltage is lower than set point, modal processor produces an external interrupt, send the power supply request of filling by wireless communication module to main frame, main frame exports processor controls startup sawtooth signal generation circuit output swept-frequency signal to swept frequency source after receiving request signal by wireless communication module, the swept frequency source output frequency-changing AC signal of telecommunication is to the energy transmitting antenna, simultaneously, processor controls is to the sampling of the frequency-changing AC signal of telecommunication and the rotation of driving energy transmitting antenna three dimensions of swept frequency source output, and the energy transmitting antenna produces the energy magnetic field of frequency change; The multidirectional coupling energy reception antenna that sensor network nodes fills the power supply slave places in the energy magnetic field range that fills the transmission of power supply main frame, induction receives fills supply power voltage, electric current, the voltage detecting circuit of node slave detects the supply power voltage that fills that receives, when detecting maximum voltage, send information by wireless communication module to the wireless communication module that fills the power supply main frame, the processor controls of filling the power supply main frame positions the anglec of rotation of energy transmitting antenna and the output frequency of swept frequency source; When the node cell voltage arrives set point, modal processor produces an external interrupt again, sends the signal of stopping power supply by wireless communication module to filling the power supply main frame, after filling the power supply main frame and receiving this signal, processor controls enters dormancy, and one is filled power supply process and finishes.

After said sensor network nodes fills the rectification circuit rectification of power supply slave, enough big when filling the supply power voltage value, connect directly that to fill power supply circuits be node power supply or be its battery charge, the supply power voltage value is less when filling, by big electric capacity electric power storage, connect again and fill power supply circuits or fill power supply circuits earlier by connecing again after the voltage doubling rectifing circuit.

Said power supply information realtime interactive and two passages of power transfer of filling can integrate, save and fill power supply main frame and sensor network nodes and fill wireless communication module in the power supply slave, utilization is filled the multidirectional coupling energy reception antenna that the power supply energy transmitting antenna of main frame and node fill the power supply slave and is realized filling the power supply information interaction, fill power supply information and be superimposed upon on the electric power signal, decoding is come out in slave again.

The utility model also has following significant advantage and beneficial effect except possessing wireless filling the existing advantage of power supply technique:

(1) can fill power supply for wireless sensor network node automatically, reflector and receiving chip can be started working simultaneously automatically in the time of need filling power supply, and two sides will close automatically when expiring electricity, have avoided unnecessary energy consumption, realize intellectuality, greatly improved the life-span of wireless sensor network.Can be automatically for wireless sensor network node fill power supply,

(2) fill the power supply main frame and adopt controlled swept frequency source, wireless power supply tranmitting frequency and the adjustable power of filling, the wireless power supply emission current that fills can be surveyed, can find the wireless power supply Best Coupling frequency of filling between principal and subordinate's machine, adopt rotatable transmitting antenna, can find the wireless power supply Best Coupling direction of filling between principal and subordinate's machine.

(3) node fills the multidirectional coupling reception antenna that power supply slave receiving circuit adopts, and can increase wireless angle of filling power supply; The supply power voltage testing circuit is filled in employing, can be convenient to search out wirelessly fill power supply Best Coupling frequency and Best Coupling direction, and improve wireless speed, efficient and distance of filling power supply.

(4) fill power supply main frame and node slave and have the private radio communication passage, energy-transmission channel is separated with information transfer channel, power transfer and message transmission can be carried out simultaneously, whether need between main frame and slave can to determine to carry out wireless direction of filling power supply, wireless frequency of filling power supply and power, transmitting antenna by radio communication, unloaded energy waste in the time of can avoiding not having slave and fill power supply, and improve wireless speed, efficient and distance of filling power supply.

(5) can make node no longer need powered battery directly for the wireless sensor network node power supply, the node volume be littler, has prolonged the life-span of sensor network.

Description of drawings

Fig. 1 is the wireless electric power system schematic diagram that fills of the utility model;

Fig. 2 fills power supply master machine antenna rotation schematic diagram;

Fig. 3 is the multidirectional coupling reception antenna of a node slave schematic diagram;

Fig. 4 fills power supply host circuit block diagram;

Fig. 5 is a main frame energy communication common antenna schematic diagram;

Fig. 6 is that node fills power supply slave circuit block diagram;

Fig. 7 is a slave energy information common antenna schematic diagram;

Fig. 8 is that a main frame fills the power supply schematic diagram to a plurality of slaves;

Fig. 9 fills power supply host circuit principle schematic;

Figure 10 is that slave fills the power supply circuits principle schematic;

Figure 11 is that main frame is to the judgement flow process from machine information;

Figure 12 is controlled swept frequency source schematic diagram.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further elaborated.

Fig. 1 is provided with for the utility model adopted and fills the wireless sensor network electric energy transmission system that power supply main frame and sensor network nodes fill the power supply slave machine, fill the power supply main frame shown in Fig. 2,4,9, contain processor controls, controlled swept frequency source, rotatable transmitting antenna and wireless communication module.Processor controls (MCU) adopts low-power consumption to contain the processor of AD module, controlled swept frequency source is voltage controlled oscillator (VCO), change the frequency that input voltage just can change oscillator output signal, when input voltage is constant DC voltage, it is exactly a stable oscillator, when input voltage is triangular wave or sawtooth waveforms, become swept frequency source.As Figure 12.The modulation voltage of controlled swept frequency source is controlled by processor controls (MCU) in filling the power supply host circuit, processor controls and saw-tooth wave generating circuit are formed the control circuit of swept frequency source, control signal input scan frequency source, the ac signal that output frequency is controlled.The output of controlled swept frequency source connects rotatable wireless and fills the power supply antenna, forms the variation magnetic field close with driving signal frequency around the driven antenna, and reception antenna will produce induced electromotive force in this magnetic field the time.The radio communication circuit of main frame receives and demodulation obtains the data of slave, sends to processor controls, as control whether fill power supply, whether antenna rotates and the anglec of rotation is positioned the condition of emission signal frequency.Under the control of processor controls (MCU), transmitting antenna rotates in three dimensions, by its emission swept-frequency signal and detect the slave induced voltage and find Best Coupling frequency and best transmit power between radiating circuit and receiving circuit.Transmitting coil generally adopts pie one dimension coil, and the rotatable transmitting coil that fills the power supply main frame is single one dimension coil, can rotate at three dimensions along horizontal center line and vertical center line.

Wireless sensor network node fills the power supply slave shown in Fig. 3,6,10, contains multidirectional coupling reception antenna, rectification circuit, the big electric capacity of electric power storage, boosts, fills power supply circuits, wireless communication module.Multidirectional coupling reception antenna receives electromagnetic wave signal and converts alternating current to, and alternating current offers modal processor through the rectification post-sampling and carries out voltage detecting.Simultaneously, the electric current after the rectification has 3 kinds of processing modes, and as Figure 10, (a) magnitude of voltage is enough big, connects directly that to fill power supply circuits be node power supply or be its battery charge; (b) magnitude of voltage is less, earlier by big electric capacity electric power storage, provides power supply for filling power supply circuits again; (c) magnitude of voltage is less, connects voltage doubling rectifing circuit, connects to fill power supply circuits again.Adopt multidirectional coupled antenna, promptly three coil combination of being arranged by orthogonal direction form, the signal that the antenna of different directions receives is strong and weak different, the relative position of transmitting coil and receiving coil can not be accurately on time like this, it is maximum always to have a coupling in three receiving coils, the induced electromotive force maximum that produces still can maintain a metastable state after the energy that is produced by three coils is synthetic.The winding that signal is the strongest in the signal that all directions antenna is received improves electric energy transmitting efficient to the subsequent conditioning circuit of slave with this.

The implementation method of slave current detection section is: the induced electromotive force that the slave reception antenna produces in main frame magnetic field, through behind the rectifying and wave-filtering, connect a precision resistance, the voltage at measuring resistance two ends, this voltage should be more level and smooth direct current signal, and with the MCU of this analog signal by A/D conversion input node, if AD is 10, AD value=2^10 * tested voltage/reference voltage (with the processor supply power voltage as reference voltage) just can obtain magnitude of voltage, and the precision of magnitude of voltage is relevant with the figure place of AD.Can obtain the induced potential maximum by default program comparative figures signal.The electric current detecting method of main frame is the same, gets final product to such an extent that electric current change divided by the resistance value of precision resistance the voltage of the precision resistance that obtains.

In the system that Fig. 4, Fig. 6 constitute, the communication of filling between power supply main frame and the node slave can be selected special radio transmitting and receiving chip and wireless transmission antenna for use, energy-transmission channel is separated with information transfer channel, power transfer and message transmission can be carried out simultaneously, but, the increase of radio communication circuit has very big loss to the node electric energy, has reduced and has filled power supplying efficiency.If remove special radio communication circuit, as Fig. 5, Fig. 7, filling power supply main frame and wireless sensor network fills between the power supply slave and does not have special radio communication, but and the shared antenna that transmits and receives of power transfer part, principle is to rely on the variation of electric current and voltage to come exchange message, adopts the variation of magnitude of voltage to represent by main frame to the signal of slave, and slave adopts the variation of current value to represent to the signal of main frame, high level presentation logic 1, low level presentation logic 0.As shown in figure 11, when not filling power supply, main frame and slave are 0 lasting state, when slave need fill power supply, send high level to main frame.The signal of telecommunication that main frame sends to slave by antenna induction, and by processor controls detection size of current, when detecting high level, make an immediate response, control controlled swept frequency source work, and the rotation of control transmitting antenna.When the slave induced voltage is maximum, send high level signal to main frame, main frame control antenna immediately stops the rotation.The controlled swept frequency source frequency sweep of host computer control when the slave induced voltage is maximum, sends high level signal to main frame afterwards, and main frame is controlled controlled swept frequency source immediately and stopped frequency sweep.Main frame is started working under the parameter of determining, up to end, slave sends high level signal notice main frame and finishes to fill power supply.The antenna that utilizes energy to send and receive is during as information transfer channel, slave is encoded to simple high-low level with information, drive reception antenna and form magnetic field, master machine antenna is arranged in this magnetic field, produce induced electromotive force and the height variation also can occur, therefrom demodulate the data of slave by voltage detecting.At this moment, reduced the volume of node circuit.

When node voltage was not enough, from external interrupt of microprocessor generation of machine circuit Control Node, microprocessor sent the power supply request of filling by wireless communication module simultaneously.After filling power supply main frame receiving request signal by wireless communication module, control controlled swept frequency source and produce frequency-fixed signal, and control rotatable transmitting antenna rotation, transmitting antenna is a pie one dimension coil, can be along level and vertical center line rotation in three dimensions.By electromagnetic theory as can be known, being coupled with very strong directivity between the antenna, all is the one dimension sheet and transmit and receive antenna, therefore when two days line parallels, and the induced electromotive force maximum of reception antenna generation.The node slave has voltage detecting circuit, can detect this maximum voltage, and pass to by radio communication and to fill the power supply main frame, fill the power supply main frame is converted into the information that obtains antenna in MCU positional information, and, make master machine antenna be in the Best Coupling position by the rotation of MCU control antenna.Simultaneously, the processor controls of filling the power supply main frame starts sawtooth signal generation circuit, and sawtooth waveforms is imported controlled swept frequency source, makes its output swept-frequency signal, the magnetic field that the driven antenna generated frequency changes.To fill the natural frequency of power supply slave close or when equating, node fills the induced voltage maximum that the power supply slave produces when frequency that transmits and node, in like manner, detects induced voltage by the voltage detecting circuit of slave, by radio communication and main-machine communication.Main frame received signal and conversion obtain corresponding tranmitting frequency, make the main frame emission signal frequency be fixed on this Best Coupling frequency by the input voltage of controlling controlled swept frequency source.When node voltage arrived certain value, the microprocessor of circuit Control Node produced external interrupt, and microprocessor responds interrupts sending the signal of stopping power supply to main frame.Fill power supply main frame received signal, main control system enters dormancy, and one is filled power supply process and finishes.

As shown in Figure 8, a kind of wireless sensor network fills the wireless power supply unit that fills of power supply, and one is filled the power supply main frame and can be simultaneously fill the power supply slave to a plurality of wireless sensor network nodes and fill power supply simultaneously.Suppose in the transmitting boundary that fills the power supply main frame, there are two wireless sensor network node slaves to send the power supply request of filling to filling the power supply main frame simultaneously, main frame selects one of them node for mainly filling the power supply object at random, another is the less important power supply object that fills, and fills the power supply slave and mainly fills position and the tranmitting frequency that the power supply slave communicated and determined rotatable transmitting antenna.Because wireless sensor network node fills the power supply slave multidirectional coupled antenna is arranged, the induced voltage that the coupled antenna of different directions obtains is not of uniform size, select the signal of induced voltage maximum to insert the follow-up power supply circuits that fill, and it is similar from machine circuit respectively to fill power supply, resonance frequency also is more or less the same, therefore this moment, the less important power supply slave that fills also can obtain the higher output power that fills.

Shown in Fig. 6,7, after the charging circuit of wireless sensor network node slave changed power supply circuits into, filling the power supply slave can make wireless sensor network break away from the restriction of battery directly for the node power supply, and the life-span is longer, and volume is littler.

Claims (2)

1. the wireless charging and feeding device of a wireless sensor network node is characterized in that: is provided with and fills the wireless sensor network electric energy transmission system that power supply main frame and sensor network nodes fill the power supply slave machine, wherein:
Fill the power supply main frame comprise processor controls, swept frequency source, energy transmitting antenna and be used for sensor network nodes fill the power supply slave fill the power supply information realtime interactive wireless communication module, the main frame wireless communication module is connected with processor controls is two-way, processor controls is connected with swept frequency source is two-way, and swept frequency source output connects the energy transmitting antenna; The single-chip microcomputer of the low-power consumption of A/D modular converter is contained in processor controls system, and swept frequency source system is by the voltage controlled oscillator of processor controls control, and energy transmitting antenna system is by the three dimensions rotation pie one dimension coil of processor controls control;
Sensor network nodes fill the power supply slave comprise modal processor, multidirectional coupling energy reception antenna, rectification circuit, fill the supply power voltage testing circuit, fill power supply circuits and with fill power supply main frame wireless communication module corresponding mutual wireless communication module, multidirectional coupling energy reception antenna output connects rectification circuit, rectification circuit output connects fills power supply circuits and modal processor, fill power supply circuits output connected node processor, modal processor output connects the slave wireless communication module; Multidirectional coupling energy reception antenna is three coil combination of arranging by orthogonal direction.
2. the wireless charging and feeding device of wireless sensor network node according to claim 1 is characterized in that: the rectification circuit output that sensor network nodes fills the power supply slave connects fills power supply circuits or fills power supply circuits by connecing after the voltage doubling rectifing circuit again.
CN2011200668664U 2011-03-15 2011-03-15 Wireless charging and feeding device of wireless sensor network node CN202076853U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001295A (en) * 2012-12-12 2013-03-27 广东欧珀移动通信有限公司 Wireless charging equipment
CN104158304A (en) * 2014-07-30 2014-11-19 华南理工大学 Mobile self-adaption energy and information synchronization wireless transmission method and transmission device
CN104184219A (en) * 2014-07-30 2014-12-03 重庆邮电大学 TR-based reverse cooperation RF power supply system and method
CN104600877A (en) * 2015-02-13 2015-05-06 哈尔滨工业大学 Wireless power transmission device with sidesway adaptability and rotation adaptability
CN105375951A (en) * 2014-08-15 2016-03-02 亚德诺半导体集团 Wireless charging platform using beamforming for wireless sensor network
CN105608858A (en) * 2014-11-17 2016-05-25 韩华泰科株式会社 Method and system for transmitting sensor signals
CN106993326A (en) * 2016-01-21 2017-07-28 北京睿创投资管理中心(有限合伙) Radio communication base station sweep start method, starter and user equipment
CN107390170A (en) * 2017-08-01 2017-11-24 王书旸 The method that three-dimensional fix is carried out based on directional electromagnetic and the anglec of rotation
CN108827377A (en) * 2018-04-28 2018-11-16 西安电子科技大学 Untetheredization measuring system for aircraft
US10211662B2 (en) 2014-08-15 2019-02-19 Analog Devices Global Wireless charging platform using environment based beamforming for wireless sensor network

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001295A (en) * 2012-12-12 2013-03-27 广东欧珀移动通信有限公司 Wireless charging equipment
CN103001295B (en) * 2012-12-12 2015-07-08 广东欧珀移动通信有限公司 Wireless charging equipment
CN104158304A (en) * 2014-07-30 2014-11-19 华南理工大学 Mobile self-adaption energy and information synchronization wireless transmission method and transmission device
CN104184219A (en) * 2014-07-30 2014-12-03 重庆邮电大学 TR-based reverse cooperation RF power supply system and method
US10211662B2 (en) 2014-08-15 2019-02-19 Analog Devices Global Wireless charging platform using environment based beamforming for wireless sensor network
CN105375951A (en) * 2014-08-15 2016-03-02 亚德诺半导体集团 Wireless charging platform using beamforming for wireless sensor network
CN105375951B (en) * 2014-08-15 2018-11-06 亚德诺半导体集团 The wireless charging platform of Wave beam forming is used for wireless sensor network
CN105608858A (en) * 2014-11-17 2016-05-25 韩华泰科株式会社 Method and system for transmitting sensor signals
CN105608858B (en) * 2014-11-17 2020-02-14 韩华压缩机株式会社 Method and system for transmitting sensor signals
CN104600877A (en) * 2015-02-13 2015-05-06 哈尔滨工业大学 Wireless power transmission device with sidesway adaptability and rotation adaptability
CN106993326A (en) * 2016-01-21 2017-07-28 北京睿创投资管理中心(有限合伙) Radio communication base station sweep start method, starter and user equipment
CN107390170A (en) * 2017-08-01 2017-11-24 王书旸 The method that three-dimensional fix is carried out based on directional electromagnetic and the anglec of rotation
CN108827377A (en) * 2018-04-28 2018-11-16 西安电子科技大学 Untetheredization measuring system for aircraft

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Termination date: 20130315