CN105896748A - Method for dispatching multiple receiving ends in radiation-type radio energy transmission system - Google Patents

Abstract

The invention discloses a method for dispatching multiple receiving ends in a radiation-type radio energy transmission system, and the method comprises the steps: carrying out the statistics of the receiving ends which are connected for energy transmission in a former energy transmission period, carrying out the priority calculation according to the current electric quantity and distance information of the receiving ends, and forming a transmission queue according to the sequence of priorities from the high to the low; carrying out the priority calculation of the remaining receiving ends in the same mode, and forming a waiting transmission queue according to the sequence of priorities from the high to the low; carrying out the adjustment of the receiving ends in the transmission queue and the waiting transmission queue according to the current electric quantities of all receiving ends; obtaining the position, expected power and transmission frequency of each receiving end of the adjusted transmission queue corresponding to each time slot in each time slot of the current energy transmission period, and transmitting energy to the receiving ends according to the obtained information. The method achieves the ordered management and dispatching of the plurality of receiving ends for a transmitting end while guaranteeing the energy transmission efficiency and preventing the receiving ends from being low in electric quantity.

Description

Multiple receiving terminal dispatching methods in radiant type radio energy transmission system

Technical field

The present invention relates to wireless power transmission technical field, particularly relate to multiple in a kind of radiant type radio energy transmission system connecing Receiving end dispatching method.

Background technology

Wireless energy transfer (Wireless Power Transfer, WPT), refers to electric energy and does not has from power supply to the one of load There is the energy transmission means through the most directly contact.Different according to transporting mechanism, wireless energy transfer can be largely classified into Induction, magnetic field resonance type, radiant type.Wherein radiant type can be divided into again radio wave mode, microwave mode, swashs Light mode and ultrasound wave mode.

21 century, facing mankind the significant challenge realizing economy and social sustainable development, environment and energy problem day Benefit becomes one of the outstanding problem in the whole world.How to effectively utilize the existing energy, cause the extensive concern of scholars. Novel electric energy storage and transmission technology, if flying wheel battery, super capacitor and wireless power transmission technology etc. are to realize the energy The important channel efficiently utilized.

The wireless charging standard of main flow has a three major types: Qi standard, Power Matters Alliance (PMA) standard, Alliance for Wireless Power ((A4WP) standard.Qi standard and PMA standard are based on electromagnetic induction skill Art, A4WP standard is based on mr techniques.Radiant type wireless power transmission technology, is total to relative to electromagnetic induction and magnetic Shake technology, there is farther transmission range and more preferable convenience, there is the biggest researching value and application prospect, particularly For radio sensing network.Which mainly uses microwave band to carry out electric energy transmission.Microwave is that wavelength is between radio wave And the electromagnetic wave between infrared ray.Owing to frequency is higher, ionosphere can be passed through and do not reflect.Cosmic space is to microwave Transmit very good, almost without energy loss, be about 2% by loss during atmosphere.Microwave power transmission utilizes electromagnetism spoke Penetrate principle, power supply send electric power, by microwave transducers, industrial-frequency alternating current is transformed into microwave, then by transmitting terminal Microwave transmitting antenna delivers to space, is then communicated to terrestrial microwave receiving terminal, and the microwave received passes through transducer by microwave It is transformed into industrial-frequency alternating current, for user.But, existing mainstream standard technology does not has for radiant type radio The standard control protocol that can transmit.

Summary of the invention

It is an object of the invention to provide multiple receiving terminal dispatching methods in a kind of radiant type radio energy transmission system, ensureing Energy transmission efficiency and while avoiding receiving terminal to be in low state of charge, it is achieved the transmitting terminal orderly pipe to multiple receiving terminals Reason and scheduling.

It is an object of the invention to be achieved through the following technical solutions:

Multiple receiving terminal dispatching methods in a kind of radiant type radio energy transmission system, including:

An energy transmission cycle statistically accessing the receiving terminal carrying out energy transmission, and current according to receiving terminal Electricity and range information, carry out priority calculating, be ranked up from high to low according still further to priority, forms transmission queue；

For other receiving terminals remaining, adopt and carry out priority calculating in the same way, and according to priority from high to low It is ranked up, the queue to be transmitted such as formation；

Use predetermined mode, according to each receiving terminal current electric quantity and priority to transmission queue and etc. queue to be transmitted In receiving terminal be adjusted；

Each time slot at present energy transmission cycle, it is thus achieved that in the transmission queue after the adjustment that each time slot is corresponding, each connects The position of receiving end, expectation power and transmission frequency information, and connect to corresponding by beam antenna according to the information obtained Receiver-side transmission energy.

Further, the formula that described priority calculates is:

$pry\left(k\right)=\left\{\begin{array}{ccc}\frac{1}{L\left(k\right)}\&times;\frac{D}{D\left(k\right)},& if& \frac{D\left(k\right)}{D}<dandL\left(k\right)>l\\ {\mathrm{pry}}_{\max },& if& \frac{D\left(k\right)}{D}<dandL\left(k\right)<l\\ {\mathrm{pry}}_{\min },& if& \frac{D\left(k\right)}{D}>d\end{array}\right.;$

Wherein, pry (k) represents kth receiving terminal U_kPriority, pry_maxRepresent absolute maximum priority, pry_minTable Showing the most minimum priority, D (k) represents kth receiving terminal U_kThe distance of distance base station, D represents the wireless energy of transmitting terminal Amount transmission coverage；L (k) represents kth receiving terminal U_kCurrent electric quantity, l represents the minimum power threshold of setting, d Represent the receiving terminal maximum distance threshold value set.

Further, the mode that described employing is predetermined, according to each receiving terminal current electric quantity and priority to transmission queue with And etc. receiving terminal in queue to be transmitted be adjusted including:

By in the queue to be transmitted such as described, calculating priority according to current electric quantity and range information is pry_maxReceiving terminal will Adding transmission queue and carry out prioritization, if after adding this receiving terminal, in transmission queue, receiving terminal number is beyond model Enclose, then by the queues to be transmitted such as receiving terminal removal transmission queue minimum for transmission queue medium priority joins；

And, when transmission queue exists the receiving terminal that current electric quantity is Full Charge Capacity, by the removal transmission of corresponding receiving terminal Queue, and according to etc. the queue medium priority to be transmitted receiving terminal taking out respective numbers in turn from high in the end join transmission Queue.

As seen from the above technical solution provided by the invention, energy transmission preferences is carried out based on information about power and range information Level calculates, and is received the adjustment of end based on information about power and priority, it is to avoid receiving terminal is operated in low state of charge With ensure while energy transmission efficiency, it is achieved transmitting terminal is to the orderly management of multiple receiving terminals and scheduling.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below Accompanying drawing is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings Other accompanying drawings.

The time division multiple acess transmission energy diagram that Fig. 1 provides for the embodiment of the present invention；

The stream of multiple receiving terminal dispatching methods in a kind of radiant type radio energy transmission system that Fig. 2 provides for the embodiment of the present invention Cheng Tu；

The schematic diagram of multiple receiving terminal dispatching methods that Fig. 3 provides for the embodiment of the present invention；

The scene signal of the radiant type radio energy transmission system comprising multiple receiving terminal that Fig. 4 provides for the embodiment of the present invention Figure.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on Embodiments of the invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into protection scope of the present invention.

Radiant type wireless power transmission technology, is dependent on the beam antenna transmitting-receiving microbeam energy of advanced person, relies at receiving terminal High-performance receives and commutation technique, it is achieved longer-distance wireless power transmission.This technology, relative to electromagnetic induction and Mr techniques, has farther transmission range and more preferable convenience, has the biggest researching value and application prospect.

In radiant type radio energy transmission system, a transmitting terminal to be generally that multiple receiving terminal transmits energy.For reality Existing transmitting terminal is to the management of multiple receiving terminals and scheduling, it is provided that preferably transmit energy service.The invention provides one many Individual receiving terminal dispatching method, devises energy transmission priority, is ensureing energy transmission efficiency and to avoid receiving terminal to be in low While state of charge, it is achieved that the transmitting terminal orderly scheduling to multiple receiving terminals.

The present invention uses the mode of time division multiple acess, it is achieved a transmitting terminal provides wireless energy to pass for multiple receiving terminals simultaneously Defeated.

As it is shown in figure 1, by a wireless energy transfer cycle T, be divided into n time slot.So transmitting terminal at most can be with n Receiving terminal transmits energy simultaneously.When transmitting terminal does not has unnecessary energy transfer resource, the receiving terminal of request transmission energy to need Enter and wait.At each time slot, transmitting terminal is according to the position of current time slots correspondence receiving terminal, expectation through-put power, biography The information such as defeated frequency, by beam antenna directional transmissions wireless energy.

In order to realize to transmission receiving terminal and etc. the management and running of receiving terminal to be transmitted, the embodiment of the present invention defines two Queue.

First is queue 1, also referred to as in transmission queue, at transmission receiving terminal when an energy transmission cycle starts Sequence, transmitting terminal carrys out the transmission energy acceptance end of corresponding each time slot with this queue.

Second is queue 2, the queue to be transmitted such as also referred to as, the receiving terminal to be transmitted such as is used for and starts at an energy transmission cycle Time sequence, when transmitting terminal has available resources, by queue 2 select receiving terminal access transmission queue.

For the sequence of two queues of specification, next define receiving terminal energy transmission priority and priority calculates public affairs Formula.Main contents are as follows:

1), in queue 1, the higher receiving terminal of priority is at the more front slot transmission energy of energy transmission cycle；In queue 2, Preferential higher receiving terminal carries out priority access when that energy transmitting accessible.

2) transmission priority of receiving terminal calculates obtain according to current electric quantity and the range information of receiving terminal.

3) priority is dynamic, after each energy transmission cycle terminates, and the electricity fed back according to each receiving terminal and distance Information, recalculates and distributes priority.

The formula that described priority calculates is:

$pry\left(k\right)=\left\{\begin{array}{ccc}\frac{1}{L\left(k\right)}\&times;\frac{D}{D\left(k\right)},& if& \frac{D\left(k\right)}{D}<dandL\left(k\right)>l\\ {\mathrm{pry}}_{\max },& if& \frac{D\left(k\right)}{D}<dandL\left(k\right)<l\\ {\mathrm{pry}}_{\min },& if& \frac{D\left(k\right)}{D}>d\end{array}\right.;$

Wherein, pry (k) represents kth receiving terminal U_kPriority, pry_maxRepresent absolute maximum priority, pry_minTable Showing the most minimum priority, D (k) represents kth receiving terminal U_kThe distance of distance base station, D represents the wireless energy of transmitting terminal Amount transmission coverage；L (k) represents kth receiving terminal U_kCurrent electric quantity, l represents the minimum power threshold of setting, d Represent the receiving terminal maximum distance threshold value set.

In the embodiment of the present invention, flow process such as Fig. 2 institute of multiple receiving terminal dispatching methods in radiant type radio energy transmission system Showing, it specifically includes that

Step 21, statistically an energy transmission cycle are accessing the receiving terminal carrying out energy transmission, and according to reception The current electric quantity of end and range information, carry out priority calculating, be ranked up from high to low according still further to priority, is formed and passes Defeated queue.

Wherein, current electric quantity and the range information of receiving terminal is all to be fed directly to transmitting terminal by receiving terminal.

Step 22, for other receiving terminals remaining, adopt and carry out priority calculating in the same way, and according to priority It is ranked up from high to low, the queue to be transmitted such as formation.

Step 23, use predetermined mode, according to each receiving terminal current electric quantity with priority to transmission queue and wait Receiving terminal in transmission queue is adjusted.

Particularly as follows: by the queue to be transmitted such as described, calculating priority according to current electric quantity and range information is pry_max's Addition transmission queue is carried out prioritization by receiving terminal, if after adding this receiving terminal, and receiving terminal number in transmission queue Go beyond the scope, then by the queues to be transmitted such as receiving terminal removal transmission queue minimum for transmission queue medium priority joins； And, when transmission queue exists the receiving terminal that current electric quantity is Full Charge Capacity, team is transmitted in the removal of corresponding receiving terminal Row, and according to etc. the queue medium priority to be transmitted receiving terminal taking out respective numbers in turn from high in the end join transmission team Row.

Step 24, at each time slot of present energy transmission cycle, it is thus achieved that the transmission queue after the adjustment that each time slot is corresponding In the position of each receiving terminal, expectation power and transmission frequency information, and according to the information obtained by beam antenna to Corresponding receiving terminal transmission energy.

In order to more get information about the scheduling of multiple receiving terminal and energy transport, it is possible to see Fig. 3.

Below in conjunction with a concrete example, the flow process described in Fig. 2 is illustrated.

As shown in Figure 4, the scene of the radiant type radio energy transmission system of multiple receiving terminal is comprised.Receiving terminal is by capture nothing The energy that heat input transmitting base station is launched is charged.Assume that transmitting terminal maximum can transmit energy for n receiving terminal simultaneously.When In transmitting terminal covers transmission energy range, the receiving terminal number that need to carry out energy transmission is n+m.These are connect by transmitting terminal Receiving end energy transmission dispatching method is as follows:

After a charge cycle terminates, accessing n receiving terminal of charging, according to receiving terminal feedback current electric quantity and Range information, calculates each priority at transmission receiving terminal by priority formula, is according to priority arranged in one in team Row 1；For other m receiving terminal, then according to receiving terminal current electric quantity and distance, calculated each etc. by priority formula The priority of receiving end waiting, is according to priority arranged in a queue 2, if occurring in m receiving terminal that priority is pry_max Receiving terminal, then this receiving terminal will be added in queue 1, carry out priority arrangement, if receiving terminal number in now queue 1 For n+1, then the user that priority is minimum will be moved out of queue 1, add enqueue 2 and arrange；When queue 1 exists receiving terminal energy Amount receives the fullest, then corresponding receiving terminal is removed queue 1, then receiving terminal the highest for queue 2 medium priority is moved into team Row 1；After determining queue 1 and queue 2, transmitting terminal is based on queue 1, at each time slot of energy transmission cycle, it is thus achieved that time slot The position of corresponding receiving terminal, it is desirable to the information such as power, is then passed to this receiving terminal by beam antenna according to these information Delivery of energy.

Through the above description of the embodiments, those skilled in the art it can be understood that to above-described embodiment permissible Realized by software, it is also possible to the mode adding necessary general hardware platform by software realizes.Based on such reason Solving, the technical scheme of above-described embodiment can embody with the form of software product, and this software product can be stored in one In individual non-volatile memory medium (can be CD-ROM, USB flash disk, portable hard drive etc.), including some instructions with so that One computer equipment (can be personal computer, server, or the network equipment etc.) performs the present invention, and each is implemented Method described in example.

The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replace Change, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with claims Protection domain is as the criterion.

Claims (3)

1. multiple receiving terminal dispatching methods in a radiant type radio energy transmission system, it is characterised in that including:

An energy transmission cycle statistically accessing the receiving terminal carrying out energy transmission, and current according to receiving terminal Electricity and range information, carry out priority calculating, be ranked up from high to low according still further to priority, forms transmission queue；

For other receiving terminals remaining, adopt and carry out priority calculating in the same way, and according to priority from high to low It is ranked up, the queue to be transmitted such as formation；

Use predetermined mode, according to each receiving terminal current electric quantity and priority to transmission queue and etc. queue to be transmitted In receiving terminal be adjusted；

Each time slot at present energy transmission cycle, it is thus achieved that in the transmission queue after the adjustment that each time slot is corresponding, each connects The position of receiving end, expectation power and transmission frequency information, and connect to corresponding by beam antenna according to the information obtained Receiver-side transmission energy.

Multiple receiving terminal dispatching methods in a kind of radiant type radio energy transmission system the most according to claim 1, its Being characterised by, the formula that described priority calculates is:

$pry\left(k\right)=\left\{\begin{array}{ccc}\frac{1}{L\left(k\right)}\&times;\frac{D}{D\left(k\right)},& if& \frac{D\left(k\right)}{D}<dandL\left(k\right)>l\\ {\mathrm{pry}}_{\max },& if& \frac{D\left(k\right)}{D}<dandL\left(k\right)<l\\ {\mathrm{pry}}_{\min },& if& \frac{D\left(k\right)}{D}>d\end{array}\right.;$

Wherein, pry (k) represents kth receiving terminal U_kPriority, pry_maxRepresent absolute maximum priority, pry_minTable Showing the most minimum priority, D (k) represents kth receiving terminal U_kThe distance of distance base station, D represents the wireless energy of transmitting terminal Amount transmission coverage；L (k) represents kth receiving terminal U_kCurrent electric quantity, l represents the minimum power threshold of setting, d Represent the receiving terminal maximum distance threshold value set.

Multiple receiving terminal dispatching methods in a kind of radiant type radio energy transmission system the most according to claim 1 and 2, It is characterized in that, the mode that described employing is predetermined, according to each receiving terminal current electric quantity and priority to transmission queue and It is adjusted including etc. the receiving terminal in queue to be transmitted:

By in the queue to be transmitted such as described, calculating priority according to current electric quantity and range information is pry_maxReceiving terminal will Adding transmission queue and carry out prioritization, if after adding this receiving terminal, in transmission queue, receiving terminal number is beyond model Enclose, then by the queues to be transmitted such as receiving terminal removal transmission queue minimum for transmission queue medium priority joins；

And, when transmission queue exists the receiving terminal that current electric quantity is Full Charge Capacity, by the removal transmission of corresponding receiving terminal Queue, and according to etc. the queue medium priority to be transmitted receiving terminal taking out respective numbers in turn from high in the end join transmission Queue.