CN103763720A - Method and system for detecting obstacles influencing wireless energy transmission - Google Patents
Method and system for detecting obstacles influencing wireless energy transmission Download PDFInfo
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Abstract
The embodiment of the invention provides a method and system for detecting obstacles influencing wireless energy transmission. The method for detecting the obstacles influencing the wireless energy transmission comprises the steps that the energy signal strength and communication signal characteristic of the wireless energy transmission between a first energy sending end and a first energy receiving end are detected, it is judged that the first obstacle influencing the wireless energy transmission occurs under the condition that it is detected that the value of the energy signal strength is reduced to a first predetermined standard and the value of the communication signal characteristic is reduced to a second predetermined standard, it is judged that the second obstacle influencing the wireless energy transmission occurs under the condition that it is detected that the value of the energy signal strength is reduced to the first predetermined standard and it is not detected that the value of the communication signal characteristic is reduced to the second predetermined standard. According to the method and system for detecting the obstacles influencing the wireless energy transmission, different obstacles influencing the wireless energy transmission between the energy sending end and the energy receiving end can be detected and recognized, and a technological base is provided for overcoming the obstacles by adopting different technological means and recovering normal wireless energy transmission.
Description
Technical field
The present invention relates to wireless energy transfer field, relate in particular to a kind of obstacle thing of wireless energy transfer by detection method and system.
Background technology
In wireless charging or wireless power technology, between energy sending ending equipment and energy receiving device, can carry out Energy Transfer by wireless mode.Existing wireless charging/power supply technique comprises inductance coupling high technology (inductive coupling), mr techniques (magnetic resonance) and microwave energy transfer technology (microwave energy transmission) etc., wherein inductance coupling high technology and mr techniques are applicable to wireless charging/power applications scene of short distance (centimetre magnitude), and microwave energy transfer technology likely realizes the Energy Transfer between energy sending ending equipment and energy receiving device in remote (ultimate range is 10 meters of left and right) application scenarios.
Fig. 1 shows the operation principle of microwave energy transfer technology, and in the wireless energy transfer system of Fig. 1, energy transmitting terminal 330a passes through Wireless microwave mode to energy receiving terminal 330b transmitting energy 301.Wherein, microwave array 101a in energy transmitting terminal 330a comprises the adjustable reflector of a plurality of phase places, for carrying out the transmission of energy 301, and rectifier 340 in energy receiving terminal 330b receives these energy 301, thereby be that battery 370 in energy receiving terminal 330b is powered.Communicator 360 in energy receiving terminal 330b is the received energy signal intensity (power of wireless energy transfer) of communicator 320 report rectifier 340 to energy transmitting terminal 330a by RFDC channel constantly, control logic 310 in energy transmitting terminal 330a is adjusted the phase place of each reflector in microwave array 101a one by one based on this report information, until the energy signal intensity that the communicator 360 in energy receiving terminal 330b is reported reaches maximum.
Summary of the invention
The object of this invention is to provide a kind of technology that detects the obstacle origin of an incident in wireless energy transfer.
According to some embodiments of the invention, provide a kind of obstacle thing of wireless energy transfer by detection method, described method comprises:
Detect energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
In the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, reach one second preassigned, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
Other embodiment according to the present invention, also provide a kind of obstacle thing of wireless energy transfer by detection system, and described system comprises:
Detection module, for detection of energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
Judge module, for reaching one second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
Method and system in the embodiment of the present invention can come detection and Identification to go out to affect the different obstruct origin of an incident of wireless energy transfer between energy transmitting terminal and energy receiving terminal according to the energy signal intensity between energy transmitting terminal and energy receiving terminal and signal of communication feature, thereby provide technical foundation for taking different technologies means to overcome above-mentioned impact recovery normal wireless Energy Transfer.
It is for the form introduction to simplify is by some concepts that further describe in following embodiment that foregoing invention content is provided.Content of the present invention is not intended to identify key feature or the essential feature of theme required for protection, is not also intended to for helping to determine the scope of theme required for protection.In addition, theme required for protection is not limited to solve the realization of any or all technical problem of mentioning in arbitrary part of the present invention.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of wireless energy transmission technology;
Fig. 2 be in embodiment of the present invention obstacle thing by the flow chart of steps of detection method;
Fig. 3 be in embodiment of the present invention obstacle thing by the structure chart of detection system;
Fig. 4 be in another embodiment of the present invention obstacle thing by the hardware structure diagram of detection system;
Fig. 5 a and 5b are the schematic diagrames of the obstacle origin of an incident dissimilar in wireless energy transfer process.
Embodiment
Below in conjunction with accompanying drawing (in some accompanying drawings, identical label represents identical element) and embodiment, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
It will be understood by those skilled in the art that the terms such as " first " in the present invention, " second ", only for distinguishing different step, equipment or module etc., neither represent any particular technology implication, also do not represent the inevitable logical order between them.
Inventor finds under study for action, likely occurs the various disorders origin of an incident and cause the power of wireless energy transfer between energy transmitting terminal and energy receiving terminal to reduce in wireless energy transfer process.For example, as shown in Figure 5 a, if there is shelter in wireless energy transfer process between energy transmitting terminal Tx1 and energy receiving terminal Rx1, the power of wireless energy transfer can obviously reduce; As shown in Figure 5 b, if there is other energy receiving terminals Rx2 within the scope of the Energy Transfer of energy transmitting terminal Tx1, energy transmitting terminal Tx1 will be simultaneously to a plurality of energy receiving terminal Rx1, Rx2 transmitting energy, due to other energy receiving terminals " sharing " to energy, the power of the wireless energy transfer between energy transmitting terminal Tx1 and first energy receiving terminal Rx1 can obviously reduce.The obstacle origin of an incident different according to above-mentioned two classes, should take power that different technological means improves wireless energy transfer between energy transmitting terminal and first energy receiving terminal to recover the normal wireless Energy Transfer to first energy receiving terminal.As can be seen here, how detecting and accurately identify the obstacle origin of an incident that above-mentioned two classes are different is to recover the technical foundation of normal wireless Energy Transfer.
According to inventor's research, find, in wireless energy transfer process, between energy transmitting terminal and energy receiving terminal, also carry out RFDC simultaneously, so there is wireless energy transfer passage and RFDC channel between energy transmitting terminal and energy receiving terminal simultaneously, the former is for transmitting energy, and the latter is used for transmitting RFDC signal.In the situation that there is for example to occur between energy transmitting terminal and energy receiving terminal this obstacle origin of an incident of shelter, wireless energy transfer passage and RFDC channel can be subject to the impact of shelter simultaneously, now between energy transmitting terminal and energy receiving terminal, the intensity of energy signal can obviously reduce, and between energy transmitting terminal and energy receiving terminal, the value of the signal characteristic (such as the channel condition information of signal of communication, the received signal strength indicator of the signal to noise ratio of signal of communication, signal of communication etc.) of signal of communication also obvious reduction can occur simultaneously.And in the situation that there is to occur in the energy range of transmission of energy transmitting terminal for example this obstacle origin of an incident of other energy receiving terminals, now between energy transmitting terminal and first energy receiving terminal, the intensity of energy signal can " be shared " and obviously reduce due to other energy receiving terminals, but between energy transmitting terminal and first energy receiving terminal, the value of the signal characteristic of signal of communication obvious reduction can not occur.As can be seen here, in the situation that the obstacle origin of an incident causes the intensity of energy signal between energy transmitting terminal and energy receiving terminal obviously to reduce, the dissimilar obstacle origin of an incident is different for the impact of signal of communication feature between energy transmitting terminal and energy receiving terminal, therefore likely according to this otherness, detects the obstacle origin of an incident dissimilar in wireless energy transfer process.
As shown in Figure 2, in embodiment of the present invention, provide a kind of obstacle thing of wireless energy transfer by detection method, described method comprises:
S110: the energy signal intensity and the signal of communication feature that detect the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
S120: reach one second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
It will be understood by those skilled in the art that arbitrary end that said method can be in the first energy transmitting terminal and the first energy receiving terminal realizes, also can in other equipment that are independent of the first energy transmitting terminal and the first energy receiving terminal, realize.Below, in conjunction with Fig. 2, describe the concrete function of obstacle thing each step in detection method of above-mentioned wireless energy transfer in detail.
S110: the energy signal intensity and the signal of communication feature that detect the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal.
Owing to likely occurring other more energy transmitting terminal or energy receiving terminals in embodiment of the present invention subsequent descriptions, therefore here, by the situation that do not occur that any obstacle origin of an incident of wireless energy transfer carries out an energy transmitting terminal and an energy receiving terminal of normal wireless Energy Transfer and be called " the first energy transmitting terminal " and " the first energy receiving terminal ".
In wireless energy transfer process, between the first energy transmitting terminal and the first energy receiving terminal, there is the wireless energy transfer passage and the RFDC channel of communicating by letter for carrying out wireless data signal for wireless energy transfer simultaneously.Wherein, on wireless energy transfer passage, the intensity of energy signal has determined the watt level of wireless energy transfer, without at least one signal of communication feature that on existing data communication channel, wireless data signal embodies, can reflect from different perspectives the transmission characteristic of RFDC.Above-mentioned signal of communication feature can comprise: the channel condition information (CSI of signal of communication, Channel State Information), signal to noise ratio (SNR, Signal-to-Noise Ratio), received signal strength indicator (RSSI, Received Signal Strength Indication) etc.
In an embodiment of S110, energy signal intensity and signal of communication feature in the time of can detecting in real time wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal.In this process, can to above-mentioned two kinds of data, detect with certain sample frequency simultaneously, and obtain the value of the energy signal intensity on each sampled point and the value of signal of communication feature as historical record value, these historical record values can be stored in a memory space, as the follow-up data basis that compares and analyze.
Start the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal and reach stable after, for example under the application scenarios of microwave energy transfer, in the first energy transmitting terminal adjustment microwave array, the phase place of each reflector is complete, after the energy signal intensity that the first energy receiving terminal is reported reaches maximum, at least one in can the history value based on detected energy signal intensity in a maximum predetermined quantity value determined an energy signal intensity reference value, thereby provides data basic for follow-up comparison and analysis.For example, can be using the maximum of detected energy signal intensity as this energy signal intensity reference value, or mean value that can be using the detected second largest energy signal intensity level to the fourth-largest these three values of energy signal intensity level is as this energy signal intensity reference value etc.Similarly, at least one in can the history value based on detected signal of communication feature in a maximum predetermined quantity value determined a signal of communication feature reference value, thereby provides data basic for follow-up comparison and analysis.
S120: reach one second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect, and reach described the second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
As analyzed before, owing to cause between the first energy transmitting terminal and the first energy receiving terminal energy signal intensity obviously to reduce in the obstacle origin of an incident in the situation that, the different obstruct origin of an incident is different for the impact of signal of communication feature between the first energy transmitting terminal and the first energy receiving terminal, therefore in S120, according to this otherness, detects the obstacle origin of an incident dissimilar in wireless energy transfer process.
In a plurality of embodiments of the present invention, the reduction of value of energy signal intensity of usining reaches the criterion that one first preassigned obviously reduces as energy signal intensity, and the reduction of value of signal of communication feature of usining reaches the criterion that one second preassigned obviously reduces as signal of communication feature.In the detailed introduction of follow-up a plurality of embodiments, the multiple difference that has provided the first preassigned and the second preassigned is determined mode.
Because may causing the value of energy signal intensity, the various obstacle origins of an incident are down to lower value, therefore in an embodiment of S120, in the reduction of the value of detected energy signal strength signal intensity, whether reach aspect described the first preassigned, can consider that the value of detected energy signal intensity and the comparison of an energy signal intensity reference value determine, for example, when the value of detected energy signal intensity is during lower than one first predetermined ratio of this energy signal intensity reference value (value of this first predetermined ratio can in for example value between 30%～80%), can think that the reduction of value that energy signal intensity detected has reached described the first preassigned.This energy signal intensity reference value can be determined by the mode of introducing in S110.In addition, the special reason occurring in short time (for example a mobile object between the first energy transmitting terminal and the first energy receiving terminal fast through) can cause the value of energy signal intensity to be down to lower value then returning to rapidly normal level, in an embodiment, may not wish this special origin of an incident to process as the obstacle origin of an incident, therefore under one first predetermined ratio and the situation of lasting one first scheduled time of the value that can work as detected energy signal intensity lower than this energy signal intensity reference value, just think that the reduction of value that energy signal intensity detected has reached described the first preassigned.Those skilled in the art can arrange the value of this first scheduled time according to the actual requirements.
Because the various obstacle origins of an incident may cause the value fast reducing of energy signal intensity, in another embodiment of S120, in the reduction of the value of detected energy signal strength signal intensity, whether reached aspect described the first preassigned, can consider that the pace of change of the value of detected energy signal intensity determines, for example, when the fall off rate of the value of detected energy signal intensity surpasses a first threshold, think that the reduction of value that energy signal intensity detected has reached described the first preassigned.Those skilled in the art can utilize the difference of two sampled points and the ratio in the time interval of two sampled points to calculate this fall off rate, and this first threshold can be set according to the actual requirements.
In an embodiment of S120, in the reduction that detects the value of signal of communication feature, whether reached aspect described the second preassigned, can consider that the value of detected signal of communication feature and the comparison of a signal of communication feature reference value determine, for example, when the value of detected signal of communication feature is during lower than one second predetermined ratio of this signal of communication feature reference value (value of this second predetermined ratio can in for example value between 30%～80%), think that the reduction of value that signal of communication feature detected has reached described the second preassigned.This signal of communication feature reference value can be determined by the mode of introducing in S110.In addition, the special reason occurring in short time (for example a mobile object between the first energy transmitting terminal and the first energy receiving terminal fast through) can cause the value of signal of communication feature to be down to lower value then returning to rapidly normal level, in an embodiment, may not wish this special origin of an incident to process as the obstacle origin of an incident, therefore under one second predetermined ratio and the situation of lasting one second scheduled time of the value that can work as detected signal of communication feature lower than this signal of communication feature reference value, just think that the reduction of value that signal of communication feature detected has reached described the second preassigned.Those skilled in the art can arrange the value of this second scheduled time according to the actual requirements.
In another embodiment of S120, in the reduction that detects the value of signal of communication feature, whether reached aspect described the second preassigned, can consider that the pace of change of the value of detected signal of communication feature determines, for example, when the fall off rate of the value of detected signal of communication feature surpasses a Second Threshold, think that the reduction of value that signal of communication feature detected has reached described the second preassigned.Those skilled in the art can utilize the difference of two sampled points and the ratio in the time interval of two sampled points to calculate this fall off rate, and this Second Threshold can be set according to the actual requirements.
In S120, when the reduction of the value of energy signal intensity being detected, reached described the first predetermined standard time, the obstacle origin of an incident that wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal has now occurred to affect is described, if need to determine that concrete obstacle thing, by type, needs to determine according to the testing result of signal of communication feature.When the reduction of the value of signal of communication feature being detected, reach described the second predetermined standard time, be judged as the first obstacle origin of an incident that the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal has occurred to affect, the feature of this first obstacle origin of an incident is to cause obstacle to the RFDC channel between the first energy transmitting terminal and the first energy receiving terminal, such as being included between the first energy transmitting terminal and the first energy receiving terminal, has shelter etc.When the reduction of the value of signal of communication feature being detected, do not reach described the second predetermined standard time, be judged as the second obstacle origin of an incident that the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal has occurred to affect, the feature of this second obstacle origin of an incident is can not cause obstacle to the RFDC channel between the first energy transmitting terminal and the first energy receiving terminal, such as being included within the scope of the Energy Transfer of the first energy transmitting terminal, has at least one other energy receiving terminal etc.
Method in the above embodiment of the present invention can come detection and Identification to go out to affect the different obstruct origin of an incident of wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal according to the energy signal intensity between the first energy transmitting terminal and the first energy receiving terminal and signal of communication feature, thereby provides technical foundation for taking different technologies means to overcome above-mentioned impact recovery normal wireless Energy Transfer.
It will be appreciated by those skilled in the art that, in the said method of the specific embodiment of the invention, the sequence number size of each step does not also mean that the priority of execution sequence, the execution sequence of each step should be definite with its function and internal logic, and should not form any restriction to the implementation process of the specific embodiment of the invention.
In addition, the embodiment of the present invention also provides a kind of computer-readable medium, is included in the computer-readable instruction that carries out following operation while being performed: carry out step S110 and the S120 operation of the method in above-mentioned Fig. 2 illustrated embodiment.
As shown in Figure 3, in embodiment of the present invention, also provide a kind of obstacle thing of wireless energy transfer by detection system 200, this system comprises:
Detection module 210, for detection of energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
Judge module 220, for reaching one second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
It will be understood by those skilled in the art that said system can realize by the arbitrary end in the first energy transmitting terminal and the first energy receiving terminal, also can realize in other equipment that are independent of the first energy transmitting terminal and the first energy receiving terminal.Below, in conjunction with Fig. 3, describe the concrete function of obstacle thing each module in detection system of above-mentioned wireless energy transfer in detail.
Detection module 210, for detection of energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal.
In an embodiment, energy signal intensity and signal of communication feature when detection module 210 can detect wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal in real time.In this process, detection module 210 can detect with certain sample frequency, and obtain the value of the energy signal intensity on each sampled point and the value of signal of communication feature as historical record value, these historical record values can be stored in a memory space, as the follow-up data basis that compares and analyze.
Start the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal and reach stable after, for example under the application scenarios of microwave energy transfer, in the first energy transmitting terminal adjustment microwave array, the phase place of each reflector is complete, after the energy signal intensity that the first energy receiving terminal is reported reaches maximum, detection module 210 in can the history value based on detected energy signal intensity at least one in a maximum predetermined quantity value determine an energy signal intensity reference value, thereby provide data basic for follow-up comparison and analysis.For example, detection module 210 can be using the maximum of detected energy signal intensity as this energy signal intensity reference value, or mean value that can be using the detected second largest energy signal intensity level to the fourth-largest these three values of energy signal intensity level is as this energy signal intensity reference value etc.Similarly, detection module 210 in can the history value based on detected signal of communication feature at least one in a maximum predetermined number value determine a signal of communication feature reference value, thereby provide data basic for follow-up comparison and analysis.
Judge module 220, for reaching one second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
Because may causing the value of energy signal intensity, the various obstacle origins of an incident are down to lower value, therefore in an embodiment, whether judge module 220 has reached aspect described the first preassigned in the reduction of the value of detected energy signal strength signal intensity, can consider that the value of detected energy signal intensity and the comparison of an energy signal intensity reference value determine, for example, when the value of detected energy signal intensity is during lower than one first predetermined ratio of this energy signal intensity reference value (value of this first predetermined ratio can in for example value between 30%～80%), judge module 220 can think that the reduction of value that energy signal intensity detected has reached described the first preassigned.In addition, the special reason occurring in short time (for example a mobile object between the first energy transmitting terminal and the first energy receiving terminal fast through) can cause the value of energy signal intensity to be down to lower value then returning to rapidly normal level, in an embodiment, may not wish this special origin of an incident to process as the obstacle origin of an incident, therefore under one first predetermined ratio and the situation of lasting one first scheduled time of the value that can work as detected energy signal intensity lower than this energy signal intensity reference value, judge module 220 just thinks that the reduction of value that energy signal intensity detected has reached described the first preassigned.Those skilled in the art can arrange the value of this first scheduled time according to the actual requirements.
Because the various obstacle origins of an incident may cause the value fast reducing of energy signal intensity, in another embodiment, whether judge module 220 has reached aspect described the first preassigned in the reduction of the value of detected energy signal strength signal intensity, can consider that the pace of change of the value of detected energy signal intensity determines, for example, when the fall off rate of the value of detected energy signal intensity surpasses a first threshold, judge module 220 thinks that the reduction of value that energy signal intensity detected has reached described the first preassigned.Those skilled in the art can utilize the difference of two sampled points and the ratio in the time interval of two sampled points to calculate this fall off rate, and this first threshold can be set according to the actual requirements.
In an embodiment, whether judge module 220 has reached aspect described the second preassigned in the reduction that detects the value of signal of communication feature, can consider that the value of detected signal of communication feature and the comparison of a signal of communication feature reference value determine, for example, when the value of detected signal of communication feature is during lower than one second predetermined ratio of this signal of communication feature reference value (value of this second predetermined ratio can in for example value between 30%～80%), judge module 220 thinks that the reduction of value that signal of communication feature detected has reached described the second preassigned.In addition, the special reason occurring in short time (for example a mobile object between the first energy transmitting terminal and the first energy receiving terminal fast through) can cause the value of signal of communication feature to be down to lower value then returning to rapidly normal level, in an embodiment, may not wish this special origin of an incident to process as the obstacle origin of an incident, therefore under one second predetermined ratio and the situation of lasting one second scheduled time of the value that can work as detected signal of communication feature lower than this signal of communication feature reference value, judge module 220 just think detect signal of communication feature reduction to have reached described the second preassigned low.Those skilled in the art can arrange the value of this second scheduled time according to the actual requirements.
In another embodiment, whether judge module 220 has reached aspect described the second preassigned in the reduction that detects the value of signal of communication feature, can consider that the pace of change of the value of detected signal of communication feature determines, for example, when the fall off rate of the value of detected signal of communication feature surpasses a Second Threshold, judge module 220 thinks that the reduction of value that signal of communication feature detected has reached described the second preassigned.Those skilled in the art can utilize the difference of two sampled points and the ratio in the time interval of two sampled points to calculate this fall off rate, and this Second Threshold can be set according to the actual requirements.
System in the above embodiment of the present invention can come detection and Identification to go out to affect the different obstruct origin of an incident of wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal according to the energy signal intensity between the first energy transmitting terminal and the first energy receiving terminal and signal of communication feature, thereby provides technical foundation for taking different technologies means to overcome above-mentioned impact recovery normal wireless Energy Transfer.
A kind of obstacle thing that Fig. 4 provides for the embodiment of the present invention is by the structural representation of detection system 400, and to obstacle thing, the specific implementation by detection system 400 does not limit the specific embodiment of the invention.As shown in Figure 4, this obstacle thing can be comprised by detection system 400:
Processor (processor) 410, communication interface (Communications Interface) 420, memory (memory) 430 and communication bus 440.Wherein:
Processor 410, communication interface 420 and memory 430 complete mutual communication by communication bus 440.
Processor 410, for executive program 432, specifically can realize in the system embodiment shown in above-mentioned Fig. 3 obstacle thing by the correlation function of detection system.
Particularly, program 432 can comprise program code, and described program code comprises computer-managed instruction.
Processor 410 may be a central processor CPU, or specific integrated circuit ASIC(Application Specific Integrated Circuit), or be configured to implement one or more integrated circuits of the embodiment of the present invention.
Memory 430, for depositing program 432.Memory 430 may comprise high-speed RAM memory, also may also comprise nonvolatile memory (non-volatile memory), for example at least one magnetic disc store.Program 432 specifically can be carried out following steps:
Detect energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
In the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, reach one second preassigned, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
Although theme described herein is the execution in computer system and providing in the general context carried out in binding operation system and application program, but also one skilled in the art will recognize that and can carry out other realizations in conjunction with the program module of other types.Generally speaking, program module comprises the structure of carrying out particular task or realizing routine, program, assembly, data structure and the other types of particular abstract data type.It will be appreciated by those skilled in the art that, this theme described herein can be put into practice by other computer system configurations, comprise portable equipment, multicomputer system, based on microprocessor or programmable consumer electronics, minicom, mainframe computer etc., also can use in the distributed computing environment (DCE) that task is carried out by the teleprocessing equipment connecting by communication network therein.In distributed computing environment (DCE), program module can be arranged in both of local and remote memory storage device.
Those of ordinary skills can recognize, unit and the method step of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
If described function usings that the form of SFU software functional unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the part that technical scheme of the present invention contributes to original technology in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid computer read/write memory medium comprises storing as any mode of the information such as computer-readable instruction, data structure, program module or other data or physics volatibility that technology realizes and non-volatile, removable and can not be because of eastern medium.Computer read/write memory medium specifically comprises, but be not limited to, USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), Erasable Programmable Read Only Memory EPROM (EPROM), EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM), flash memory or other solid-state memory technology, CD-ROM, digital versatile disc (DVD), HD-DVD, blue light (Blue-Ray) or other light storage devices, tape, disk storage or other magnetic storage apparatus, maybe can be for storing information needed and can be by any other medium of computer access.
Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (28)
1. the obstacle thing of wireless energy transfer, by a detection method, is characterized in that, described method comprises:
Detect energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
In the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, reach one second preassigned, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
2. method according to claim 1, is characterized in that, described signal of communication feature comprise following at least one: the received signal strength indicator of the channel condition information of signal of communication, the signal to noise ratio of signal of communication, signal of communication.
3. method according to claim 1, is characterized in that, energy signal intensity and the signal of communication feature of the wireless energy transfer between described detection the first energy transmitting terminal and the first energy receiving terminal further comprise:
At least one in history value based on detected energy signal intensity in a predetermined quantity value of maximum determined an energy signal intensity reference value.
4. method according to claim 1, is characterized in that, energy signal intensity and the signal of communication feature of the wireless energy transfer between described detection the first energy transmitting terminal and the first energy receiving terminal further comprise:
At least one in history value based on detected signal of communication feature in a predetermined quantity value of maximum determined a signal of communication feature reference value.
5. method according to claim 1, is characterized in that,
Whether the reduction that the comparison of the value based on described energy signal intensity and an energy signal intensity reference value detects the value of described energy signal intensity reaches described the first preassigned.
6. method according to claim 5, is characterized in that,
In the situation that the value of described energy signal intensity lower than one first predetermined ratio of described energy signal intensity reference value, thinks that the reduction of value that described energy signal intensity detected reaches described the first preassigned.
7. method according to claim 5, is characterized in that,
In the situation that the value of described energy signal intensity lower than one first predetermined ratio of described energy signal intensity reference value and continued for one first scheduled time, thinks that the reduction of value that described energy signal intensity detected reaches described the first preassigned.
8. method according to claim 1, is characterized in that,
Whether the reduction that the fall off rate of the value based on described energy signal intensity detects the value of described energy signal intensity reaches described the first preassigned.
9. method according to claim 8, is characterized in that,
In the situation that the fall off rate of the value of described energy signal intensity surpasses a first threshold, think that the reduction of value that described energy signal intensity detected reaches described the first preassigned.
10. method according to claim 1, is characterized in that,
Whether the reduction that the comparison of the value based on described signal of communication feature and a signal of communication feature reference value detects the value of described signal of communication feature reaches described the second preassigned.
11. methods according to claim 10, is characterized in that,
In the situation that the value of described signal of communication feature lower than one second predetermined ratio of described signal of communication feature reference value, thinks that the reduction of value that described signal of communication feature detected reaches described the second preassigned.
12. methods according to claim 10, is characterized in that,
In the situation that the value of described signal of communication feature lower than one second predetermined ratio of described signal of communication feature reference value and continued for one second scheduled time, thinks that the reduction of value that described signal of communication feature detected reaches described the second preassigned.
13. methods according to claim 1, is characterized in that,
Whether the reduction that the fall off rate of the value based on described signal of communication feature detects the value of described signal of communication feature reaches described the second preassigned.
14. methods according to claim 13, is characterized in that,
In the situation that the fall off rate of the value of described signal of communication feature surpasses a Second Threshold, think that the reduction of value that described signal of communication feature detected reaches described the second preassigned.
15. methods according to claim 1, is characterized in that, the described first obstacle origin of an incident is included between described the first energy transmitting terminal and described the first energy receiving terminal and has shelter; The described second obstacle origin of an incident is included in and within the scope of the Energy Transfer of described the first energy transmitting terminal, has at least one second energy receiving terminal.
The obstacle thing of 16. 1 kinds of wireless energy transfer, by detection system, is characterized in that, described system comprises:
Detection module, for detection of energy signal intensity and the signal of communication feature of the wireless energy transfer between the first energy transmitting terminal and the first energy receiving terminal;
Judge module, for reaching one second preassigned in the situation that the reduction that the reduction of the value of described energy signal intensity reaches the value of one first preassigned and described signal of communication feature detected, be judged as the first obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect; In the situation that the reduction that the reduction of the value of described energy signal intensity reaches described the first preassigned and the value of described signal of communication feature do not detected detected, reach described the second preassigned, be judged as the second obstacle origin of an incident that the wireless energy transfer between described the first energy transmitting terminal and described the first energy receiving terminal has occurred to affect.
17. systems according to claim 16, is characterized in that, described detection module be further used in the history value based on detected energy signal intensity in a maximum predetermined quantity value at least one determine an energy signal intensity reference value.
18. systems according to claim 16, is characterized in that, described detection module be further used in the history value based on detected signal of communication feature in a maximum predetermined quantity value at least one determine a signal of communication feature reference value.
19. systems according to claim 16, is characterized in that,
Whether the reduction that described judge module detects the value of described energy signal intensity for the comparison of value based on described energy signal intensity and an energy signal intensity reference value reaches described the first preassigned.
20. systems according to claim 19, is characterized in that,
Described judge module is in the situation that the value of described energy signal intensity lower than one first predetermined ratio of described energy signal intensity reference value, thinks that the reduction of value that described energy signal intensity detected reaches described the first preassigned.
21. systems according to claim 19, is characterized in that,
Described judge module is in the situation that the value of described energy signal intensity lower than one first predetermined ratio of described energy signal intensity reference value and continued for one first scheduled time, thinks that the reduction of value that described energy signal intensity detected reaches described the first preassigned.
22. systems according to claim 16, is characterized in that,
Whether the reduction that described judge module detects the value of described energy signal intensity for the fall off rate of value based on described energy signal intensity reaches described the first preassigned.
23. systems according to claim 22, is characterized in that,
Described judge module is in the situation that the fall off rate of the value of described energy signal intensity surpasses a first threshold, thinks that the reduction of value that described energy signal intensity detected reaches described the first preassigned.
24. systems according to claim 16, is characterized in that,
Whether the reduction that described judge module detects the value of described signal of communication feature for the comparison of value based on described signal of communication feature and a signal of communication feature reference value reaches described the second preassigned.
25. systems according to claim 24, is characterized in that,
Described judge module is in the situation that the value of described signal of communication feature lower than one second predetermined ratio of described signal of communication feature reference value, thinks that the reduction of value that described signal of communication feature detected reaches described the second preassigned.
26. systems according to claim 24, is characterized in that,
Described judge module is in the situation that the value of described signal of communication feature lower than one second predetermined ratio of described signal of communication feature reference value and continued for one second scheduled time, thinks that the reduction of value that described signal of communication feature detected reaches described the second preassigned.
27. systems according to claim 16, is characterized in that,
Whether the reduction that described judge module detects the value of described signal of communication feature for the fall off rate of value based on described signal of communication feature reaches described the second preassigned.
28. systems according to claim 27, is characterized in that,
Described judge module is in the situation that the fall off rate of the value of described signal of communication feature surpasses a Second Threshold, thinks that the reduction of value that described signal of communication feature detected reaches described the second preassigned.
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