CN108155726B - Method and equipment for supplying power - Google Patents
Method and equipment for supplying power Download PDFInfo
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- CN108155726B CN108155726B CN201611110274.1A CN201611110274A CN108155726B CN 108155726 B CN108155726 B CN 108155726B CN 201611110274 A CN201611110274 A CN 201611110274A CN 108155726 B CN108155726 B CN 108155726B
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- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000010248 power generation Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 10
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- 238000005516 engineering process Methods 0.000 description 5
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Abstract
The embodiment of the invention relates to the technical field of wireless communication, in particular to a power supply method and power supply equipment, which are used for solving the problem that a beacon base station cannot work if a battery is not powered and is not replaced in time in a battery power supply mode in the prior art. The energy generating device of the embodiment of the invention converts environmental energy into electric energy; and converting the converted electric energy into target electric energy capable of being wirelessly transmitted, outputting the target electric energy to the power supply device in a wireless mode, and supplying power to the base station by the power supply device by using the target electric energy. The energy generating device can utilize environmental energy to supply power to the base station, so that the situation that the beacon base station cannot work due to the fact that batteries are not electrified and are not replaced in time is avoided; the reliability of the beacon base station is further improved.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for supplying power.
Background
Currently, beacon base stations can push services such as navigation and information, and more beacon base stations are installed in large densely populated public places such as hospitals, houses and airports.
The beacon base station has the advantages of low Bluetooth energy consumption (BLE) technology, low hardware cost, low power consumption, long working time, easiness in deployment and the like. With the popularization and the use of beacon technology, the use amount of the beacon technology is larger and larger, and the beacon technology is exponentially increased all the time in years.
The beacon base station is generally powered by a battery, and the service life of the battery is generally in the range of 1 to 24 months. Under the advertising frequency of 100ms, one button cell can continuously supply power for the beacon base station for 1 to 3 months. Thus, if the beacon base station is powered by battery power, the batteries need to be replaced on average every few months. If not changed in time, can cause beacon basic station unable work.
In conclusion, the present beacon base station adopts a battery power supply mode, and if the battery is not powered and is not replaced in time, the beacon base station cannot work.
Disclosure of Invention
The invention provides a power supply method and power supply equipment, which are used for solving the problem that a beacon base station cannot work if a battery is not powered and is not replaced in time in a battery power supply mode in the prior art.
The embodiment of the invention provides a power supply method, which comprises the following steps:
the energy generating device converts environmental energy into electric energy;
the energy generating device converts the converted electric energy into target electric energy capable of wireless transmission;
the energy generating device outputs the target electric energy to a power supply device in a wireless mode, so that the power supply device supplies power to a base station by using the target electric energy.
Optionally, the environmental energy includes some or all of the following:
vibrational energy, frictional energy, thermal energy, and light energy.
Optionally, the energy generating device outputs the target electric energy to a power supply device in a wireless manner, and the power supply device includes:
the energy generating device outputs the target electric energy to a base station by part or all of the following wireless means:
inductive coupling, electromagnetic wave, magnetic coupling resonance.
The embodiment of the invention provides a power supply method, which comprises the following steps:
the power supply device converts target electric energy received from at least one energy generating device into power supply electric energy capable of supplying power to the base station, wherein the target electric energy is obtained by converting electric energy converted from environmental energy by the energy generating device;
and the power supply device supplies power to the base station by using the power supply electric energy.
Optionally, the power supply device uses the power supply electric energy to supply power to the base station, and includes:
and the power supply device charges a battery of the base station by using the power supply electric energy.
Optionally, the power supply device is located in the mobile terminal; the method further comprises the following steps:
if the access between the battery and the base station is in a disconnected state, the power supply device conducts the access between the battery and the base station after the parameter value of the received target electric energy is larger than a set threshold value; or
If the access between the battery and the base station is in a conducting state, the power supply device does not receive the target electric energy or disconnects the access between the battery and the base station after the parameter value of the received target electric energy is not larger than a set threshold value.
An embodiment of the present invention provides an energy generating device for supplying power, including:
a portable power generation device for converting ambient energy into electrical energy;
the energy management device is used for converting the converted electric energy into target electric energy capable of being wirelessly transmitted;
and the energy transmission device is used for outputting the target electric energy to a power supply device in a wireless mode so that the power supply device supplies power to the base station by using the target electric energy.
Optionally, the environmental energy includes some or all of the following:
vibrational energy, frictional energy, thermal energy, and light energy.
Optionally, the energy transmission device is specifically configured to:
outputting the target electric energy to a base station through part or all of the following wireless modes:
inductive coupling, electromagnetic wave, magnetic coupling resonance.
The embodiment of the invention provides a power supply device for supplying power, which comprises:
the energy receiving device is used for converting target electric energy received from at least one energy generating device into power supply electric energy capable of supplying power to a base station, wherein the target electric energy is obtained by converting electric energy converted from environmental energy by the energy generating device;
and the energy charging device is used for supplying power to the base station by utilizing the power supply electric energy.
Optionally, the energy charging device is specifically configured to:
and charging the battery of the base station by using the power supply electric energy.
Optionally, the power supply device is located in the mobile terminal; the energy receiving device is further configured to:
if the access between the battery and the base station is in a disconnected state, the access between the battery and the base station is conducted after the parameter value of the received target electric energy is larger than a set threshold value; or
If the access between the battery and the base station is in a conducting state, the target electric energy is not received or the access between the battery and the base station is disconnected after the parameter value of the received target electric energy is not larger than a set threshold value.
The energy generating device of the embodiment of the invention converts environmental energy into electric energy; and converting the converted electric energy into target electric energy capable of being wirelessly transmitted, outputting the target electric energy to the power supply device in a wireless mode, and supplying power to the base station by the power supply device by using the target electric energy. The energy generating device can utilize environmental energy to supply power to the base station, so that the situation that the beacon base station cannot work due to the fact that batteries are not electrified and are not replaced in time is avoided; the reliability of the beacon base station is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a first power supply system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second power supply system according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an energy generating device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a power supply apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a switch according to an embodiment of the present invention;
FIG. 6 is a complete structural schematic diagram of an embodiment of the present invention;
FIG. 7 illustrates a first method of supplying power according to an embodiment of the present invention;
fig. 8 is a second method for supplying power according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a first power supply system according to an embodiment of the present invention includes: an energy generating device 10, a power supply device 20, and a base station 30.
An energy generating device 10 for converting ambient energy into electrical energy; converting the converted electric energy into target electric energy capable of being wirelessly transmitted; and outputting the target electric energy to a power supply device in a wireless mode, so that the power supply device supplies power to the base station 30 by using the target electric energy.
A power supply device 20 for converting a target electric energy received from at least one energy generation device into a power supply electric energy capable of supplying power to a base station, wherein the target electric energy is obtained by converting an electric energy converted from an environmental energy by the energy generation device; the base station 30 is powered by the power supply energy.
The energy generating device of the embodiment of the invention converts environmental energy into electric energy; and converting the converted electric energy into target electric energy capable of being wirelessly transmitted, outputting the target electric energy to the base station in a wireless mode, and outputting the target electric energy to the power supply device in a wireless mode, wherein the power supply device supplies power to the base station by using the target electric energy. The energy generating device can utilize environmental energy to supply power to the base station, so that the situation that the beacon base station cannot work due to the fact that batteries are not electrified and are not replaced in time is avoided; the reliability of the beacon base station is further improved.
The environmental energy of the embodiment of the invention comprises part or all of the following:
vibrational energy, frictional energy, thermal energy, and light energy.
According to the embodiment of the invention, a micro energy converter can be added in the energy generating device, the energy is collected by the micro energy converter, and the collected energy is converted into electric energy.
Among them, there are various ways to convert the collected energy into electric energy, such as the methods can be adopted [ Zhonglin Wang, et al. nano energy, vol.1, pp.328, 2012; or the manner disclosed in patent 201310032271.0.
It should be noted that the above-mentioned exemplary manner of converting the collected energy into electric energy is only an example, and any manner capable of converting the collected energy into electric energy is applicable to the embodiment of the present invention.
After the collected energy is converted into electric energy, the values of the voltage and the current have various forms, for example, the voltage is very large, and the current is very small, which are not favorable for wireless transmission.
Based on this, the embodiment of the present invention further needs to convert the converted electric energy into the target electric energy capable of wireless transmission.
Specifically, the embodiment of the invention may add an energy management device to the energy generating device, and convert the converted electric energy into the target electric energy capable of being wirelessly transmitted by using the energy management device.
There are various ways to convert the converted electric energy into target electric energy capable of wireless transmission, for example, the electric energy may be generated by [ Luo L C, Bao D C, Yu W Q, et al.scientific Reports, 2016, 6; or a patent: generator energy management device and power generation system, application number: 201510346087.2 ].
It should be noted that the above-mentioned exemplary embodiments of converting the converted electric energy into the target electric energy capable of wireless transmission are only examples, and any embodiment of the present invention may be applied to any embodiment of converting the converted electric energy into the target electric energy capable of wireless transmission.
Optionally, when the energy generating device outputs the target electric energy to the power supply device in a wireless manner, the target electric energy may be output to the base station in part or all of the following wireless manners:
inductive coupling, electromagnetic wave, magnetic coupling resonance.
It should be noted that the above wireless transmission modes are only examples, and any wireless transmission mode capable of transmitting electric energy is applicable to the embodiment of the present invention.
In order to solve the problem that the base station continues broadcasting without a receiving end, the embodiment of the present invention may embed an energy generating device in the mobile terminal.
The power supply device can charge the battery of the base station by using the power supply electric energy, so that the battery supplies power to the base station.
The mobile terminal of the embodiment of the invention is any terminal which can receive the information broadcasted by the base station and can move, such as a bracelet, a mobile phone, a tablet computer and the like.
Since the magnitude of the electrical energy parameter is related to the transmission distance, the parameter includes, but is not limited to, voltage, current, etc. The power supply device can determine whether a terminal exists in the coverage area of the base station according to the parameter of the received electric energy.
If the parameter value of the electric energy received by the power supply device is larger than the set threshold value, it indicates that the mobile terminal is approaching to the base station or is closer to the base station, and at this time, if the path between the battery and the base station is in an off state, the power supply device can conduct the path between the battery and the base station, so that the battery can supply power to the base station;
if the power supply device does not receive the target power or the parameter value of the received power is not greater than the set threshold, it indicates that the mobile terminal is far away from the base station or is far away from the base station, and at this time, if the path between the battery and the base station is in a conducting state, the power supply device may disconnect the path between the battery and the base station, so that the battery stops supplying power to the base station.
If no mobile terminal exists in the coverage area of the base station or the mobile terminal in the coverage area receives a very weak signal of the base station, the power supply device cannot receive target electric energy sent by any mobile terminal or the received electric energy has very small parameters, and at the moment, the power supply device can disconnect a path between the battery and the base station, so that the battery stops supplying power to the base station;
because the base station does not have electricity, the broadcasting can not be carried out, thereby solving the problem that the base station can continue broadcasting under the condition that no receiving end exists.
In order to enable the solution of the embodiment of the present invention to be applicable to more scenarios, the embodiment of the present invention may place the power supply device in the base station and place the energy generating device in the mobile terminal, so that the system for supplying power according to the embodiment of the present invention includes the mobile terminal and the base station, and specifically refer to fig. 2.
Because the embodiment of the invention converts the environmental energy into the electric energy, the mobile terminal can continuously (or periodically) send the target electric energy in a wireless mode on the premise of not increasing the extra electric quantity loss, thereby ensuring that the power supply device in the base station can receive the target energy in time after the mobile terminal approaches the base station.
In practice, the power supply apparatus of the embodiment of the invention may receive the target energy through the energy receiving apparatus provided in the power supply apparatus. The energy receiving device can realize the rectification of the voltage induced by the electromagnetic waves through the rectifier diode, and can filter the voltage through the capacitor and the inductor to convert the voltage into a direct-current voltage signal. And then a circuit for stabilizing voltage is output through the transistor, so that stable voltage and current output is realized for charging the battery.
The energy receiving device adopts various self-driven passive devices to realize the energy receiving. The wireless energy receiving method is characterized in that rectification is carried out through a rectifier diode, filtering is carried out through a capacitor inductor, and then a transistor voltage is used for driving current to be converted into stable voltage suitable for charging a battery, so that energy in a wireless mode can be converted into target energy (for example, a generator energy management device and a power generation system can be adopted, and the mode in the application number: 201510346087.2) and therefore extra electric energy does not need to be consumed, and the target energy can be received in a wireless mode.
It should be noted that the above-mentioned manner of using "generator energy management device and power generation system" for energy reception is merely an example, and any manner capable of achieving energy reception is applicable to the embodiment of the present invention.
The embodiment of the invention can supply power to the base station through the closed-loop system, and the base station does not need to be maintained because the battery is dead.
The embodiment of the invention can convert environmental energy into electric energy and transmit the electric energy to the power supply device in a wireless mode, and the power supply device can judge the position of the mobile terminal according to the strength of the received electric energy and simultaneously collect and transmit data required by the Internet of things (IoT). Thus, more scenes can be adapted. For example, the energy of walking of human body can be converted into the electric energy supplied by beacon base station. Meanwhile, the server at the rear end of the beacon base station can obtain information such as the flow amount of people staying around the corresponding beacon base station by detecting the conduction time of the beacon base station and the data such as the electric quantity obtained by the battery.
The intelligent building system can realize seamless connection to the Internet of things in hospitals, houses, airports and other various places for development of intelligent buildings, and is used in facility managers, property owners and property management companies to enable the intelligent building system to be more energy-saving, safe and comfortable, for example, the intelligent building system is controlled by utilizing the on-off information of beacon base stations, so that the positions of human bodies are determined to automatically adjust equipment such as light, air conditioners and the like; also for example, in security of people, the mobile terminal is used as a pendant, buckled on a belt, or attached to shoes for determining the position of people in the environment.
As shown in fig. 3, an energy generating device according to an embodiment of the present invention includes:
a portable power generation device 300 for converting environmental energy into electrical energy;
an energy management device 301 for converting the converted electric energy into target electric energy capable of wireless transmission;
the energy transmission device 302 is configured to output the target electric energy to a power supply device in a wireless manner, so that the power supply device supplies power to the base station by using the target electric energy.
Optionally, the environmental energy includes some or all of the following:
vibrational energy, frictional energy, thermal energy, and light energy.
Optionally, the energy transmission device 302 is specifically configured to:
outputting the target electric energy to a base station through part or all of the following wireless modes:
inductive coupling, electromagnetic wave, magnetic coupling resonance.
As shown in fig. 4, the power supply device according to the embodiment of the present invention includes:
an energy receiving device 400 for converting a target electrical energy received from at least one energy generating device into a supply electrical energy capable of supplying power to a base station, wherein the target electrical energy is obtained by converting an electrical energy converted from an environmental energy by the energy generating device;
and the energy charging device 401 is used for supplying power to the base station by using the power supply electric energy.
Optionally, the energy charging apparatus 401 is specifically configured to:
and charging the battery of the base station by using the power supply electric energy.
Optionally, the power supply device is located in the mobile terminal; the energy receiving device 400 is further configured to:
if the access between the battery and the base station is in a disconnected state, the access between the battery and the base station is conducted after the parameter value of the received target electric energy is larger than a set threshold value; or
If the access between the battery and the base station is in a conducting state, the target electric energy is not received or the access between the battery and the base station is disconnected after the parameter value of the received target electric energy is not larger than a set threshold value.
In implementation, the energy charging device 401 may be disposed in the energy receiving device 400, or may be independent from the energy receiving device 400.
The switch according to the embodiment of the present invention may be implemented by various devices capable of implementing connection or disconnection of a link, for example, a switch shown in fig. 5, which can be applied to the embodiment of the present invention, includes: comparator and nmos tube.
When the voltage at the positive terminal (for the charging signal) of the comparator is greater than the voltage at the negative terminal (for the battery), the output G terminal is at a high voltage, thereby turning on nmos's DS and enabling the battery to power the base station.
Similarly, when no charging signal exists, the voltage of the positive terminal is 0 and is smaller than that of the negative terminal, and the output G terminal is low voltage, so that the DS of the nmos is closed, and the battery is prevented from supplying power to the rear base station.
It should be noted that fig. 5 is only an example, and any switch capable of turning on and off a link is applicable to the embodiment of the present invention.
The following description will be made by taking an example in which the energy charging device 401 is disposed in the energy receiving device 400, the power supply device is disposed in the base station, and the energy generating device is disposed in the mobile terminal.
As shown in fig. 6, the complete structure of the embodiment of the present invention includes: beacon base stations and mobile terminals.
The beacon base station includes: beacon base station main part, switch, battery, energy receiving arrangement.
The mobile terminal includes: a portable power generation device, an energy management device and an energy transmission device.
The portable power generation device converts environmental energy into electric energy; the energy management device converts the converted electric energy into target electric energy capable of wireless transmission; the energy transmission device outputs the target electric energy to a power supply device in a wireless mode, so that the power supply device supplies power to the base station by using the target electric energy.
The beacon base station main body realizes the functions of base station broadcasting and the like; the energy receiving device converts the received target electric energy from the at least one energy generating device into power supply electric energy capable of supplying power to the base station, charges the battery and controls the switch to switch on or off the path; the battery supplies power to the base station.
Based on the same inventive concept, the embodiment of the present invention further provides a method for supplying power, and since the device corresponding to the method is a device in the system for supplying power according to the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the method can be implemented by referring to the implementation of the device, and repeated details are not described.
As shown in fig. 7, a first method for supplying power according to an embodiment of the present invention includes:
Optionally, the environmental energy includes, but is not limited to, some or all of the following:
vibrational energy, frictional energy, thermal energy, and light energy.
Optionally, the energy generating device outputs the target electric energy to a power supply device in a wireless manner, and the power supply device includes:
the energy generating device may output the target electric energy to a base station by part or all of the following wireless means:
inductive coupling, electromagnetic wave, magnetic coupling resonance.
Based on the same inventive concept, the embodiment of the present invention further provides a method for supplying power, and since the device corresponding to the method is a device in the system for supplying power according to the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the method can be implemented by referring to the implementation of the device, and repeated details are not described.
As shown in fig. 8, a second method for supplying power according to the embodiment of the present invention includes:
Optionally, the power supply device uses the power supply electric energy to supply power to the base station, and includes:
and the power supply device charges a battery of the base station by using the power supply electric energy.
Optionally, the power supply device is located in the mobile terminal; the method further comprises the following steps:
if the access between the battery and the base station is in a disconnected state, the power supply device conducts the access between the battery and the base station after the parameter value of the received target electric energy is larger than a set threshold value; or
If the access between the battery and the base station is in a conducting state, the power supply device does not receive the target electric energy or disconnects the access between the battery and the base station after the parameter value of the received target electric energy is not larger than a set threshold value.
From the above, it can be seen that: the energy generating device of the embodiment of the invention converts environmental energy into electric energy; and converting the converted electric energy into target electric energy capable of being wirelessly transmitted, outputting the target electric energy to the power supply device in a wireless mode, and supplying power to the base station by the power supply device by using the target electric energy. The energy generating device can utilize environmental energy to supply power to the base station, so that the situation that the beacon base station cannot work due to the fact that batteries are not electrified and are not replaced in time is avoided; the reliability of the beacon base station is further improved.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A method of providing power, the method comprising:
an energy generating device in the mobile terminal converts environmental energy into electric energy;
the energy generating device converts the converted electric energy into target electric energy capable of wireless transmission;
the energy generating device outputs the target electric energy to a power supply device in a wireless mode, so that the power supply device supplies power to a base station by using the target electric energy;
the method comprises the steps that the size of a parameter value of target electric energy is used for representing a transmission distance, and if the parameter value of the target electric energy is larger than a set threshold value, it is determined that a mobile terminal belongs to the coverage range of a base station; if the parameter value of the target electric energy is not larger than the set threshold, determining that the mobile terminal does not belong to the coverage range of the base station;
when the parameter value of the target electric energy is larger than a set threshold value and a path between a battery and the base station is in a disconnected state, the path between the battery and the base station is conducted, so that a power supply device supplies power to the base station;
when the parameter value of the target electric energy is not larger than a set threshold value and a path between the battery and the base station is in a conducting state, the path between the battery and the base station is disconnected, so that a power supply device stops supplying power to the base station;
the energy generating device outputs the target electric energy to a base station by part or all of the following wireless means: inductively coupled, electromagnetic waves.
2. The method of claim 1, wherein the environmental energy comprises some or all of:
vibration energy, friction energy, heat energy.
3. An energy generating device for supplying power, the energy generating device comprising:
a portable power generation device for converting ambient energy into electrical energy;
the energy management device is used for converting the converted electric energy into target electric energy capable of being wirelessly transmitted;
the energy transmission device is used for outputting the target electric energy to a power supply device in a wireless mode so that the power supply device supplies power to the base station by using the target electric energy;
the method comprises the steps that the size of a parameter value of target electric energy is used for representing a transmission distance, and if the parameter value of the target electric energy is larger than a set threshold value, it is determined that a mobile terminal belongs to the coverage range of a base station; if the parameter value of the target electric energy is not larger than the set threshold, determining that the mobile terminal does not belong to the coverage range of the base station;
when the parameter value of the target electric energy is larger than a set threshold value and a path between a battery and the base station is in a disconnected state, the path between the battery and the base station is conducted, so that a power supply device supplies power to the base station;
when the parameter value of the target electric energy is not larger than a set threshold value and a path between the battery and the base station is in a conducting state, the path between the battery and the base station is disconnected, so that a power supply device stops supplying power to the base station;
outputting the target electric energy to a base station through part or all of the following wireless modes:
inductively coupled, electromagnetic waves.
4. The energy generating device of claim 3, wherein said ambient energy comprises some or all of:
vibration energy, friction energy, heat energy.
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| EP3011660B1 (en) * | 2013-05-23 | 2018-11-07 | Samsung Electronics Co., Ltd. | Wireless power transmission apparatus and method |
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| US9154189B2 (en) * | 2012-08-17 | 2015-10-06 | Qualcomm Incorporated | Wireless power system with capacitive proximity sensing |
| KR101979281B1 (en) * | 2018-06-12 | 2019-05-16 | 서일석 | Power recovery unit of navigation sign beacon |
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| CN102868235A (en) * | 2012-08-31 | 2013-01-09 | 中国科学院电工研究所 | Radio energy transmission system and method |
| CN102868319A (en) * | 2012-09-12 | 2013-01-09 | 北京工业大学 | Energy recovering and utilizing device based on human motion energy |
| EP3011660B1 (en) * | 2013-05-23 | 2018-11-07 | Samsung Electronics Co., Ltd. | Wireless power transmission apparatus and method |
| CN105207684A (en) * | 2014-06-23 | 2015-12-30 | 中国科学院声学研究所 | Wireless transmitting-end sending device powered by ambient energy and sending method |
| CN205610308U (en) * | 2016-04-12 | 2016-09-28 | 西藏舟航物联科技有限公司 | Can realize self -powered locator |
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