CN105204025A

CN105204025A - Position indexing-based selection system and method

Info

Publication number: CN105204025A
Application number: CN201410297923.8A
Authority: CN
Inventors: 周祥宇; 马俊修; 魏东
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2015-12-30

Abstract

The invention relates to a position indexing-based selection system and method. According to the system and method, a novel position indexing range determination technique and selection operation are used in cooperation, and a reference object can be selected under the situation that the specific position of terminal equipment is not needed to be determined, and therefore, the implementation cost and difficulty of the system can be reduced, and the installation of the system can be facilitated, and no peripheral devices are needed to be additionally adopted for the terminal equipment, and therefore, the popularization of the system and method to existing mobile terminal platforms can be facilitated.

Description

A kind of position-based index choose system and method

Technical field

The present invention relates generally to a kind of system and method choosing object of position-based index.The present invention does not rely on sound mark signal and arrives the exact time of each receiver device to realize the determination that terminal device is subordinate to scope, do not rely on the position of the terminal device determined, do not rely on yet by terminal device really allocation and point to confirm to choose object.

Background technology

relevant technologies

Very common in consumer electronics field for choosing the technology of remote object, such as, all be equipped with special infrared remote control to be convenient to user at a lot of home appliance in domestic electronic field with broad mass market prospect and control corresponding home appliance, user can adjust the on off state of home appliance by telepilot or set the mode of operation of home appliance.In addition, also there are some known technology choosing object to obtain relevant information, such as point to the scanning of bar code realization to bar code information by scanner.Even also having by arranging large area advertisement out of doors, providing Quick Response Code to use mobile telephone scanning at a distance for people, people thus obtain corresponding detailed recommended information or the network link information of correspondence.But the different telepilot passed through like this is controlled different equipment, is caught the information obtaining Quick Response Code by handset image.To be so no matter in applicability, or not to be economical, simple from the angle of operation.

auditory localization technology

In the method for the invention, employ the novel position range determination technology based on sound wave, but although this position range defining method have employed sound wave as carrier, but there is not the dependence of existing auditory localization technology, possesses the advantage that existing acoustic positioning technology does not have, equally also there is such shortcoming that multiple position is separated, but from description subsequently, this chooses this shortcoming for system to be overcome cleverly for us.The technical scheme of the novel position range determination technology based on sound wave of the present invention is coordinated mutually auxiliary with choosing the method for object, and the principle that before make use of, location technology does not adopt and feature achieve originally chooses system, reduces difficulty and the cost of realization.

The various technology determining position or scope based on sound wave known in the art, these technology are sometimes referred to as auditory localization technology.Some providing the development of auditory localization technology of Ke Kun are summed up.Ke Kun, auditory localization technology, Master's thesis, Xian Electronics Science and Technology University, 2010.1

based on the source electricity that steerable beam is formed

The sound localization method forming technology based on steerable beam occurs comparatively early and has been applied to actual a kind of localization method, the basic thought of the method is that the sound-source signal filtering weighted sum that collect microphone array are to form wave beam, then carry out lead beam by the position that search sound source is possible, obtain making wave beam have the orientation of peak power output to be the orientation of sound source.The example of such location technology comprises to adopt etc. disclosed (CN102901950) by, Wang Zumin etc. disclosed (CN103630872A), Lu are abundant.The current mode generally understood in this area forms that detect sound bearing and its method improved sonic location system, Wang Zhi etc. disclosed (CN102749614A) " a kind of acoustic array network method for self-locating auxiliary based on static sound source " for steerable beam.And form the technical development new location technology of getting up and method based on steerable beam, such as by disclosed (CN102866385A) " a kind of many sound localization methods based on spherical microphone array " such as Song Tao.

based on the source electricity that time delay is estimated

Arrive the mistiming of each sonic transducer by catching sound mark signal, and obtain remaining the path difference apart from each sonic transducer in conjunction with the air velocity of sound, then just can calculate the position angle of target.Two groups of sonic transducers only can calculate the deflection of two-dimentional interval internal object, coordinate many group sonic transducers can calculate the volume coordinate of target.The patent of this positioning using TDOA is adopted to have: disclosed (CN103645462) " a kind of audiolocation method and the terminal " such as Zhang Lan, Cui Weiwei etc. disclosed (CN1952684A) " utilize the method and apparatus of microphone localization of sound source ", disclosed (CN103064061A) " sound source localization method of three-dimensional space " such as Yang Peng, disclosed (CN101295015A) " sonic location system and the sound localization method " such as Mao Yanjie, Fan Jing etc. disclosed (CN1020332233A) " use microphone array to the method for auditory localization ", disclosed (CN102103200A) " a kind of sound source space-location method of distributed asynchronous sound sensor " such as Yang Yi, disclosed (CN103841357A) " based on the microphone array sound localization method of video tracking, Apparatus and system " of Sun Tao, disclosed (CN102854494A) " a kind of sound localization method and the device " such as Peng Yingbiao, disclosed (CN102411139A) " a kind of Intelligent positioning method of indoor sound source " of the bright grade of bang, L. Dong etc. disclosed (CN102149329A) are for the method and system of auditory localization.(CN103841357A) " microphone array sound localization method, Apparatus and system based on video tracking " of wherein opening disclosed in Sun Tao although comprise in proprietary term " microphone array ", according to described in the claim 1 of this patent: " in statistics microphone array, multiple microphone obtains the time difference information of current speech " this patent known is also realize the location of sound source by the mistiming.Wherein " using the method for the auditory localization of microphone array " by disclosed (CN102033223A) such as Fan Jing in addition equally also adopts the mistiming to realize.What adopt according to patent above-mentioned known to inventor is all catch by each receiver the exact time that acoustic signals arrives accurately, and indirectly acquisition time difference realizes locating.In order to capture the due in of acoustic signals exactly, receiver needs to possess the feature responding sonic transducer timely and also need complicated algorithm acoustic signals to be arrived to the signal collected in receiver moment and extracts thus divide accurately.If because noise receiver in the positioning action of epicycle does not correctly capture acoustic signals due in, so just the failure of meaning epicycle location is (unless there are unnecessary receiver as substitute receiver, and be not by chance subject to noise and correctly capture the due in of acoustic signals), just need again to initiate a new positioning action of taking turns, reduce the efficiency of location.

the patent that easy and this patent location index determining section is obscured

Mention in claim 1 in (CN1808171A) " sound source locating device and method and adopt this device electronic equipment " thereof disclosed in Sunplus Technology Co., Ltd: " sound source phase processor; for the phase differential between the level signal that the multiple signal pre-processing circuit of comparison of aforementioned produces; obtain outside sound source orientation " seems to conflict with the claim 2 of this patent, but actually this is not so.From the angle realized, can be seen by Fig. 5 of this patent, this patent so-called " phase place " only describes with the another kind of the etalon time delay time length that is starting point, and this patent adopts in fact or the mistiming (process flow diagram of Figure 10 of this invention also can illustrate this point) after all.According to the regulation of Patent Law, claims of patent must take patent specification as foundation, the phase method similar or identical with the present invention can not be found in the patent specification of above-mentioned patent, in above-mentioned patent specification, the explanation of phase place is referred to the another kind of the time difference especially, do not imply that it is the real phase differential (such as sound wave is via the sine wave after acoustic pickup conversion) of the waveform received." phase place " of above-mentioned patent is only that the one of time difference concept to word " phase place " uses description.So the phase place concept of above-mentioned patent and the phase place concept of patent of the present invention do not exist jural equivalence, be diverse concept from both angles of strict legal sense.

The present invention limits the twice being not more than the minimum wavelength L of the sound mark signal that terminal device sends with reference to receiver device apart from the distance d between other receiver devices, mathematically can prove, method of the present invention can receive the phase differential of sound mark signal by two receiver devices thus determine the range difference of sound source apart from two receivers uniquely, and then obtains unique mathematical description of the hyperboloid of two sheets that terminal device may exist.

Only need to catch other receiver devices when Received signal strength stablized by each receiver with the inventive method and receive waveform relative to the phase differential with reference to receiver, the moment that sound wave arrives obtains the time difference not need sophisticated identification algorithm to identify exactly.Each invention quoted from above is different, and each invention quoted from above does not illustrate or hint is with reference to receiver with receiver, is no more than the twice that sound source sends the minimum wavelength L of acoustical signal with reference to receiver apart from the distance d of other receivers.Because they do not depend on be less than apart from the distance d of other equipment the minimum wavelength L this point that sound source sends sound mark signal with reference to receiver device, so each invention of citation is that the phase differential that impossible receive waveform by two receiver devices when reception sound mark signal stabilization uniquely determines the bi-curved of sound source place from mathematical principle, each invention of citation can only catch the time difference of each receiver device of arrival of sound-source signal by complicated software and hardware solution, range difference can be determined uniquely, and finally determine the hyperboloid of two sheets at sound source place.

Known to inventor, the auditory localization of prior art and tracking or depend on the source electricity of steerable beam, or depend on the location of step-out time.In fact the even such as inventor of open (CN1808171A), although used " phase place " word in explanation, and to give tacit consent to and what uses is all time difference of sound mark signal arrival.The existing technology not having inventor known utilizes the distance d between receiver to be less than sound source when sending the twice of the minimum wavelength L of sound wave, the phase differential receiving acoustic signals according to each receiver and the wave length of sound received determine the hyperboloid of two sheets at sound source place uniquely, can in the hope of the location index scope at sound source place to the combination of such hyperboloid of two sheets according to plural number.The method of the position range determining section of terminal device of the present invention make use of this point fully, and does not have the dependence mentioned in existing sonic location system and shortcoming.Although sound source range determining method of the present invention limits each receiver device distance and is less than with reference to the d between receiver device the twice that sound source sends the minimum wavelength L of sound mark signal in addition, add the dependence of this method, although method of the present invention has made certain requirement to the geometry topology between receiver device, but significantly, method of the present invention does not rely on accurately extracts the exact time that acoustic signals arrives receiver, each receiver can be selected and receive the more stable good time slice of sound mark signal and obtain phase differential by the mode of analogue phase detection device or digital phase detection algorithm, path difference is obtained again with phase differential, thus determine the hyperboloid of two sheets at sound source place uniquely.By Patent Law original text, describe about " creativeness ": " the creative judgment mode generally adopted in the world the condition of ' substantive distinguishing features ' and ' progress ' these two aspects is integrated to pay attention to, and this ' length ' can that ' disappear ', do not respectively provide the standard that both should reach.This Method compare is reasonable, meets the aim setting up patent system" known; although this patent depends on each receiver device distance is no more than the minimum wavelength L of the sound mark signal that sound source sends twice (this respect adds restriction) with reference to the distance d of receiver device; but at the phase differential caught between each receiver and to determine in unique hyperboloid of two sheets that (operand of the algorithm realization of reduction and complexity) reduces difficulty and the cost of realization, so be the novelty meeting Patent Law defined.

what easy and this patent was obscured chooses technology

By Oman. disclosed " telepilot " (CN102016949A) such as striking inner all grades discloses a kind of method controlling object, and the method for this patent is that the clear and definite position possessed with its localizer exists crossing representative with pointing to choose with this localizer.The disclosed method step of patent of invention " telepilot " is:

The steps performed that the method for " telepilot " patent is announced is:

" wherein, in order to control these objects be arranged in this real space, following step is implemented:

-detect position and the orientation of the localizer in this real space;

-through this position of this localizer in this real space and orientation, and determine that this represents this position and the orientation that space Zhong Guan is connected in a localizer representative of this localizer through real space and this transformation rule of representing between space;

-determine that this represents these representatives crossing with this localizer representative in space;

-select a representative crossing with this localizer representative; And

-control this real space Zhong Guan and be connected in this object that this represents this localizer representative in space.”

From the original text of application invention patent " telepilot ", the method of patent of invention is obtain a position determined in a location sets (representative spaces that applied environment is corresponding) after, then chooses the representative of user for choosing by the overlapping relation geometrically that position and orientation and selected representative exist.

The method that patent of invention " telepilot " adopts is determine a position (position of localizer) in the set (representative spaces that applied environment is corresponding) of a position after, then in another position range set (each representative and scope thereof), determined the representative that will choose in the overlapping relation geometrically existed by position, orientation and representative.Method of the present invention is completely different with it, what the present invention adopted is that a kind of simple and effective new technique is to determine the location index scope (some location index scope or line position index range) of terminal device (can compare with " localizer "), and the set of position in conjunction with each Reference (can compare with " representative ") place, vectorial by the opposite direction of terminal device identification direction vector (can compare with " orientation ") is index relative, using the position of each Reference as input element, index is carried out to the location index scope of terminal device, every location index scope internal reference object that can index terminal device then for selected Reference or one of.Significantly can see that in patent of invention " telepilot ", the choose unidirectional priority of localizer to representative is determined.And choosing in method of the present invention between terminal device and Reference is two-way simultaneous determines.Method of the present invention is realizing before the choosing of Reference, and the position of its terminal device is inapt, belongs to a location retrieval scope.But coordinate with choosing action, Reference is by location index range carrying out index with the opposite direction vector of the direction vector of terminal device identification to terminal device, also confirm while oppositely confirming the final accurate location of terminal device himself be selected Reference or one of, both are two-way confirmations.The method of patent of invention " telepilot " is never directly expressed or the position that implies the terminal device (can compare with localizer) when carrying out choosing operation is uncertain, need selected Reference ginseng (can compare with representative) to realize two-way confirmation with terminal device, not only basic method is different for method of the present invention like this and patent of invention " telepilot ", but also reduces the cost of localization part and realize difficulty.Moreover positioning action only needs the sound sending common wavelength (100 ~ 500Hz) to realize, the popularization of convenient method of the present invention on the terminal device being integrated with outside speaker.

Although objectively both directly or indirectly have employed the behavior intuition that object is chosen in position-based and orientation (sensing), and this behavior intuition is it is obvious that known, the intuition generally adopted in people's living environment.Such as, the form of the sensing that child is pointed with it by the position residing for it expresses the snacks that will choose to snacks shop shop-assistant, and Here it is chooses the one of object to apply for position-based and orientation (sensing).From the angle of Patent Law; this position-based of people and orientation choose the behavior intuition of object to be a kind of known; people are in a kind of behavior intuition of common practice; so this behavior intuition can not apply for patent protection; because this greatly exaggerates patentee's rights protection scope, compromise the interests of the public.And be the protection that can obtain Patent Law based on this behavior intuition abstract technical scheme extract.Patent of invention " telepilot " and the present invention are based on the abstract different technical scheme extract of this known behavior intuition, so should think that the patent of two inequivalences is legally protected respectively.

In addition, the claim 8 of patent of the present invention proposes a kind ofly derivative chooses method, and this deriving method makes user can choose one or more equipment neatly, at random adjusts the scope and precision chosen, make operation humanized, reach the object promoting user's experience.

Summary of the invention

Position-based index choose a system, described system comprises:

(a) at least one terminal device; Each terminal device of at least one terminal device described is positioned at system optional position and emission wavelength is minimum for L sound mark signal; The integrated direction vector recognition device of each terminal device of at least one terminal device described is used for the direction vector of identification terminal equipment; And

(b) at least one Reference; The volume coordinate of the position of each Reference of at least one Reference described is known; And

(c) at least three receiver devices, there are at least two features in the position relationship between described receiver device, when the line position index range of employing three receiver device determination terminal devices: the first receiver device of receiver device, second receiver device and the 3rd receiver device lay respectively at primary importance, the second place and the 3rd position, described receiver device distinguishes at least two features of described sound mark signal, described at least two features choosing system to utilize described sound mark signal, the sound mark signal wavelength received and the displace analysis mathematical model of each receiver device the restriction of connected applications environment physical dimension obtain the line position index range of described terminal device, when the some location index scope of employing four receiver device determination terminal devices: the first receiver device of receiver device, second receiver device, 3rd receiver device and the 4th receiver device are divided into and are positioned at primary importance, the second place, 3rd position and the 4th position, receiver device distinguishes at least three features of described sound mark signal, described at least three features choosing system to utilize described sound mark signal, the sound mark signal wavelength received and the displace analysis mathematical model of each receiver device the restriction of connected applications environment physical dimension obtain the some location index scope of described terminal device.Described choose system to utilize described terminal device location index scope, the opposite direction vector of described direction vector, each Reference the known volume coordinate of position realize described in choose.

A kind of position-based index choose system, when employing three receiver devices determine the line position index range of described terminal device, at least two features of the sound mark signal that wherein said receiver device is distinguished are: with a receiver device for reference to receiver device, the sound mark signal received with it for reference to and the sound mark signal that receives of other two receiver devices compare and obtain first-phase potential difference and second-phase potential difference; When employing four receiver devices determine the some location index scope of described terminal device, at least three features of the sound mark signal that wherein said receiver device is distinguished are: with a receiving equipment for reference to receiver device, the sound mark signal received with it for reference to and the sound mark signal that receives of other three receiver devices compare and obtain first-phase potential difference, second-phase potential difference and third phase potential difference.

Position-based index choose a system, two features of the position relationship between wherein said each receiver are: (1) is not more than the twice of the minimum wavelength L of sound mark signal with reference to the distance d between receiver device and other receiver devices; (2) when employing three receiver devices determine the line position index range of described terminal device, three receiver devices are not point-blank; When employing four receiver devices determine the some location index scope of described terminal device, four receiver devices are not in a plane.

A kind of position-based index choose system, with the volume coordinate of the known position of each Reference of described Reference for starting point, with the opposite direction of the direction vector of the terminal device identified vector for index direction, index is carried out to the location index scope of terminal device, its effective index range Reference that can index in the effective range of terminal device every be selected Reference or one of, choose described in realization.

A kind of position-based index choose system, wherein for each Reference of described Reference, effective index range of its correspondence and the sectional area of described Reference in described index direction, the index angle of flare and the distance apart from the location index scope of described terminal device determine jointly.

A kind of position-based index choose system, a plurality of References of wherein said Reference meet its effective index range when can index in the effective range of the location index scope of described terminal device, described system of choosing submits the list to be selected comprising the Reference meeting above-mentioned condition to, so that user therefrom determines the Reference for choosing further to user by terminal device.

A kind of position-based index choose system, wherein said location index scope comprises: the line position index range of the terminal device that (1) is determined in employing three receiver device situation, the some location index scope of the terminal device that (2) are determined in employing four receiver device situation.

A kind of position-based index choose system, when employing four receiver devices determine the some location index scope of the solution of described terminal device position, user can define by terminal device the scope chosen in the mode that scope is drawn a circle, the face set of the described solution choosing the scope of system determination terminal device to draw a circle, and build virtual conoid according to the opposite direction vector bundle of the terminal device direction vector identified in the process of drawing a circle, obtain the vertex set gathering corresponding virtual conoid with the face of the solution of described scope of drawing a circle, construct with summit each in described vertex set as starting point is to the line segment aggregate of described each Reference, wherein, its line segment every can be corresponding with it scope of drawing a circle there is the Reference and selected occured simultaneously, choose described in realization.

Position-based index choose a method, described method comprises step: step one, described terminal device are choosing in system optional position with specific order:

(1) emission wavelength is minimum is the sound mark signal of L;

(2) the direction vector information of identification terminal equipment;

Step 2, determine that the location index scope of terminal device exists two kinds of situations: a kind of situation be employing three receiver devices to determine the line position index range of terminal device, another kind of situation is that employing four receiver devices are to determine the some location index scope of terminal device;

For situation one, adopt three receiver devices to determine the line position index range of terminal device, then there is following processing procedure:

A () receives described sound mark signal in described primary importance, the second place and the 3rd position;

(b) with a receiving position for reference to receiving position, distance d between described reference position and other two receiving positions is not more than the twice of the minimum wavelength L of sound mark signal, described reference position and other two receiving positions are not point-blank, with the sound mark signal received with reference to receiving position for reference to and the sound mark signal that receives of other two receiving positions compare obtain first-phase potential difference and second-phase potential difference, in conjunction with first-phase potential difference, second-phase potential difference, the volume coordinate of sound mark signal wavelength and each receiver location also tries to achieve the line position index range of described terminal device with reference to the restriction of applied environment physical dimension,

For situation two, adopt four receiver devices to determine the some location index scope of terminal device, then there is following processing procedure:

A () receives described sound mark signal in described primary importance, the second place, the 3rd position and the 4th position;

(b) with a receiving position for reference position, distance d between described reference position and other three receiving positions is not more than the twice of the minimum wavelength L of sound mark signal, described reference position and other three receiving positions are not in a plane, with the sound mark signal received with reference to receiving position for reference to and the sound mark signal that receives of other three receiving positions compare and obtain first-phase potential difference, second-phase potential difference and third phase potential difference, in conjunction with first-phase potential difference, second-phase potential difference, third phase potential difference, the volume coordinate of sound mark signal wavelength and each receiver location also tries to achieve described terminal device point location index scope with reference to the set size restriction of applied environment,

Step 3, with the volume coordinate of the known position of each Reference of described Reference for starting point, with the opposite direction of the direction vector of the terminal device identified vector for index direction, epitome is carried out to the location index scope of described terminal device, its effective index range Reference that can index in the effective range of terminal device every be selected Reference or one of, choose described in realization.

The invention provides a kind of definite position of terminal device that do not rely on to choose the system and method for Reference.

The invention provides a kind of system and method intuitively choosing target object.

A further object of the present invention is, what provide a kind of position-based index chooses system and method, for choosing controlled object and applying to control to it.

Another object of the present invention is, what provide a kind of position-based index chooses system and method, for choosing information object and obtaining the information be associated with information object from applied environment.

Another object of the present invention is, provides a kind ofly directly perceived to draw a circle to approve the method that scope chooses Reference flexibly, and user can choose it for the equipment of any amount of arbitrary orientation chosen according to oneself wish, well improves the experience of user.

Further object of the present invention is, provide a kind of navigational system, the special call tag of navigation that user chooses position known by terminal device according to its position and visual direction, and then call tag and terminal device mutually confirm and obtain terminal device position and the directional information of representative of consumer position, and provide based on this information, for this user, there is height navigation information targetedly.

Other object of the present invention there is provided a kind of terminal device and mutually chooses and mutual system and method, wherein said Reference can also be other-end equipment, can mutually choose and based on transmission information on the basis chosen or the connection of setting up application program between each terminal device of described terminal device.

In preferred embodiment, this terminal device can be replaced with smart mobile phone, smart mobile phone is by multiplexing outside speaker transmitting sound mark signal, by the direction vector of multiplexing inertial sensor, electronic compass identification intelligent mobile phone, replace terminal device by smart mobile phone and be conducive to popularization of the present invention.

With in specific embodiment, this terminal device can be that wearable smart bracelet substitutes, wearable smart bracelet is integrated with outside speaker, inertial sensor and electronic compass, for sending sound mark signal, identifying the direction vector of user's wrist, inertial sensor, electronic compass may be used for the gesture actions identifying user simultaneously, and be converted into control command, thus improve the experience of user greatly.

By instructions below and claims, and combine the accompanying drawing of diagram the preferred embodiments of the present invention, further object of the present invention and feature will be clearly, in the accompanying drawings, use similar label to mark similar element in the various figures.

Accompanying drawing explanation

Fig. 1 is a kind of three receiver situation schematic diagram choosing the line position index range determining section of system of position-based index.

Fig. 2 is a kind of four receiver situation schematic diagram choosing the location index scope certainty annuity part of system of position-based index.

Fig. 3 be the retrieval of a kind of position-based choose system choose components of system as directed.

Fig. 4 is the illustrative diagram of the effective index range of Reference of the positioning system that a kind of position-based index is described.

Fig. 5 is the schematic diagram that mode that scope is drawn a circle defines selected scope.

Fig. 6 is the process flow diagram that method chosen in a kind of position-based index.

invention general view

The present invention is described in detail, the preferred embodiments of the present invention shown in the drawings referring now to accompanying drawing is more complete.But the present invention should not be regarded as being limited to the embodiment proposed here, provide these embodiments to make the disclosure will be thoroughly with completely on the contrary, and scope of the present invention is conveyed to those skilled in the art completely.Carry throughout, like numerals will refers to similar element.

analytical model

Illustrate for the ease of deriving and reader understanding in follow-up instructions to the description of receiver device position all: in by receiver device form right angle triangle (three receiver situations) or right-angle tetrahedron (four receiver situations), be wherein positioned at the receiver device of right-angled apices for reference receiver device.But what this should not be construed that the present invention only protects the Space expanding of the receiver device position based on the above-mentioned type chooses system and method.

the mathematical model of three receivers

If Reference dense degree is lower in applied environment, for the model of the low dense degree of this Reference, three receivers not mathematical model point-blank can be set up.

Suppose that employing wavelength is lsound mark signal derive, if the first receiver (with reference to receiver) is in initial point, the second receiver position that distance initial point is in positive axis and the 3rd receiver position that distance initial point is in positive axis, and meet and.(receiver and the distance with reference to receiver dbe not more than the wavelength of sound mark signal ltwice) with the first receiver for reference to receiver, to carry out derivation as follows:

The hyperboloid equation that first receiver and the second receiver determine

（1）

Wherein,---the phase differential of the sound mark signal that receiver 1 and receiver 2 receive.

The hyperboloid equation that first receiver and the 3rd receiver determine

（2）

Wherein,---the phase differential of the sound mark signal that receiver 1 and receiver 3 receive.

Be curve in space by three confirmable solutions of receiver, disaggregation is designated as

（3）

Wherein f ₁with f ₂the hyperboloid that (1) formula and (2) formula are determined respectively.

The geometric meaning of this disaggregation is space curve.Position due to terminal device is under the jurisdiction of described space curve, so deserve to be called the line position index range that the space curve stating disaggregation is terminal device.

With the known volume coordinate of each Reference for starting point, with the opposite direction of the direction vector of the terminal device identified vector for index direction, index is carried out to the line position index range (solution space---space curve) of terminal device, its effective index range every Reference crossing with the effective range of line position index range (solution space---space curve) then for the Reference that will determine or one of.Namely surely separate, the position of the Reference namely will determined and terminal device is determined simultaneously simultaneously.

If himself direction vector of terminal device identification

（4）

If that n Reference position is M, wherein.If 8 separate coordinate be expressed as into N wherein.

Then ithe equation () of individual Reference opposite direction vector index ray is

（5）

Reference and the terminal device position of satisfied (5) formula can be calculated by (3) formula and (5) formula simultaneously.Also there is the possibility of separating, if there is separate, on determining not impact, because terminal device position is not the object that must determine more more simultaneously.Simultaneously also there is separate, but for the lower situation of Reference dense degree, possibility of separating very little more more.

the mathematical model of four receivers

If the dense degree of the Reference in applied environment is higher, only need to add a receiver at vertical direction.If the 4th receiver position that distance initial point is in positive axis, and meet.

The hyperboloid equation that first receiver and the 4th receiver determine

（6）

Wherein,---the phase differential of the sound mark signal that receiver 1 and receiver 4 receive.

By the relation of equattion root and unknown number, the solution totally 8 (totally four groups) that obvious equation (1), (2) and (6) are determined, 8 at the most, real root.In order to formula of reduction, and reach the object of dealing with problems, if obtain 8 solutions.Because the position of terminal device is really contained in these 8 solutions, so these 8 solutions are the some location index scope of terminal device.

8 solutions are expressed as aggregate form (some location index scope):

（7）

Determining that Reference identity is identical with the method for three receiver modules with terminal device position.

If have in space nindividual Reference, and the volume coordinate of position is known.Terminal device direction vector is in space that unit vector is known, with the position of each Reference of described Reference for starting point, with the reverse vector of unit length of vector of unit length (in the other direction vector) for the some location index scope of direction to terminal device carries out index, the some location index scope of its effective index range every and terminal device exist the Reference occured simultaneously be selected object or one of.

Analysis above, from mathematical angle, is exactly nthe known location of individual Reference and 8 solutions (some location index scope) form 8 nindividual vector, these are 8 years old na direction vector conllinear pointed to terminal device is only had in individual.

If himself direction vector of terminal device identification

（8）

If nthe position that individual Reference is known be M, wherein.If 8 separate coordinate be expressed as into N wherein.

So directed quantity (altogether 8n)

（9）

After unitization

（10）

Wherein consistent with the direction vector that terminal device the points to position containing terminal device and by the identity of Reference determined.

a kind of location index scope certainty annuity choosing system---three receiver situations of position-based index

Fig. 1 is a kind of three receiver situation schematic diagram choosing the line position index range determining section of system of position-based index.Fig. 1 illustrates the line position index range certainty annuity 100 that system chosen in a kind of position-based index, and this line position index range is that the phase differential by comparing the sound mark signal received with reference to receiver and each receiver is determined.

Diagram line position index range certainty annuity 100, comprises the terminal device 110 for launching sound mark signal, the first receiver 121, second receiver 122 of reception sound mark signal, the 3rd receiver 123, be wherein reference receiver with the first receiver 121.Second receiver 122, the 3rd receiver 123 are not more than the twice of sound mark signal wavelength L apart from distance d1, the d2 of the first receiver, and three receivers are not point-blank.

First receiver 121, second receiver 122, the 3rd receiver 123 are integrated with the sonic transducer in response to sound mark signal, and citing is not as illustrating as restriction, and sonic transducer comprises in some embodiments of the invention: electret condenser microphone etc.

The sound mark signal that first receiver 121, second receiver 122 and the 3rd receiver 123 receive in response to its present position, and produce the first representative signal 141, second representative signal 142 and third representative signal 143.Representative signal can be, such as, have the simulating signal of voltage, and this voltage directly and the amplitude scaled versions of sound mark signal that receives of receiver.Or representative signal can make, such as, pass on the digital signal belonging to sound mark signal data.First receiver 121, second receiver 122 and the 3rd receiver 123 inside can comprise that adjusting gear usually understood of practitioner in filtering, amplification, analog to digital conversion box design of hybrid circuits field.

Processing module u130 obtains the first representative signal 141, second representative signal 142 and third representative signal 143 from described three receivers, and compare with the second representative signal 142, third representative signal 143 for reference with the first representative signal 141, obtain at least two features of sound mark signal: first-phase potential difference 145 and second-phase potential difference.Because the first receiver 121, second receiver 122, the 3rd receiver 123 position are determined and known, and other two receivers are relative to the twice being not more than the minimum wavelength L of sound mark signal with reference to the distance d between receiver first receiver 121.From aforementioned mathematical model analysis: determine the first hyperboloid with the first receiver 121 and the second receiver 122 and first-phase potential difference 145, determine the second hyperboloid with the first receiver 121 and the 3rd receiver 123 and second-phase potential difference 146.The disaggregation that first hyperboloid and the second hyperboloid intersect determines four curves, and four curves are the line position index range of terminal device 110.

Citing is not conduct restriction as illustrating, processing module 130 obtains from receiver in certain embodiments the first representative signal 141, second representative signal 142, third representative signal 143 are the simulating signals with voltage, and this magnitude of voltage directly and the amplitude scaled versions of sound mark signal that receives of receiver.Now corresponding, treating apparatus u130 has multichannel analog-digital conversion function, with rational sample frequency and precision, above-mentioned Three Represents signal is sampled, and with the digital processing field practitioners such as digital filtering, digital noise reduction, amplitude adjustment, digital phase discriminator processing mode to understand extract first-phase potential difference 145, with second-phase potential difference 146.In other embodiment, treating apparatus is integrated with analogue phase detection device, analogue phase detection device for contrast signal with the first representative signal 141, carries out phase demodulation respectively and obtains the voltage proportional with first-phase potential difference 145, the voltage proportional with second-phase potential difference 146 with other representative signal.Processor integrated in treating apparatus 130 pair and the proportional voltage of phase differential carry out sampling with rational precision and sampling rate and obtain first-phase potential difference 145, second-phase potential difference 146.

Citing is not conduct restriction as illustrating, processing module 130 obtains the first representative signal 141, second representative signal 142 from receiver in certain embodiments, third representative signal 143 passes on the digital signal relevant to the data of sound mark signal, and processing module 130 extracts first-phase potential difference 145, second-phase potential difference 146 in digital processing field practitioner modes to understand such as digital filtering, digital noise reduction, amplitude adjustment, digital phase discriminators.

Citing is not conduct restriction as illustrating, in the applied environment of limited height, the system of being limited in scope, because the size restriction of environment, method of the present invention only intercepts the line position index range of the curved segments in height interval applicable in this applied environment and range intervals as terminal device 110, thus reduces the scope of line position index.

a kind of location index scope certainty annuity choosing system---four receiver situations of position-based index

Fig. 2 is a kind of four receiver situation schematic diagram choosing the location index scope certainty annuity part of system of position-based index.Fig. 2 illustrates a kind of some location index scope certainty annuity 200 choosing system of position-based index, and this location index scope determines by comparing the phase differential receiving sound mark signal with reference to receiver and each receiver.

Diagram point location index scope certainty annuity 200, comprise the first receiver 221, second receiver 222 for receiving sound mark signal, the 3rd receiver 223 and the 4th receiver 224, wherein to be in the first receiver 221 of right-angle tetrahedron right-angled apices for reference receiver.Second receiver 222, the 3rd receiver 223, the 4th receiver 224 are not more than the twice of sound mark signal minimum wavelength L apart from the distance d1 of the first receiver, d2, d3.Four receivers are not in same plane.

First receiver 221, second receiver 222, the 3rd receiver 223 and the 4th receiver 224 are integrated with the sonic transducer in response to sound mark signal, citing is not as illustrating as restriction, and sonic transducer comprises in some embodiments of the invention: electret condenser microphone etc.Processing module 230 is connected with each receiver, obtain the first representative signal 241, second representative signal 242, third representative signal 243 and forth generation table signal 244 from receiver, and it is processed thus determines the some location index scope of terminal device 210.

First receiver 221, second receiver 222, the 3rd receiver 223 and the 4th receiver 224 in response to the sound mark signal received of present position, and produce the first representative signal 241, second representative signal 242, third representative signal 243 and forth generation table signal 244.Representative signal can be, such as, have the simulating signal of voltage, and this voltage directly and the amplitude scaled versions of sound mark signal that receives of receiver.Or representative signal can be, such as, pass on the digital signal of the data of the sound mark signal belonged to received by it.First receiver 221, second receiver 222, the 3rd receiver 223 and the 4th receiver 224 inside can comprise that adjusting gear that the design of hybrid circuits skilled practitioner such as filtering, amplification, analog to digital conversion understand usually.

Processing module 230 obtains the first representative signal 241, second representation signal 242, third representative signal 243 and forth generation table signal 244 from receiver, and is that reference obtains at least three features of sound mark signal with the second representative signal 242, third representative signal 243, forth generation table signal 244: first-phase potential difference 245, second-phase potential difference 246 and third phase potential difference 247 with the first representative signal 241.Position due to the first receiver 221, second receiver 222, the 3rd receiver 223 and the 4th receiver 224 is determined and known, from aforementioned mathematical model analysis: determine the first hyperboloid with the first receiver 221 and the second receiver 222 and first-phase potential difference 245, determine the second hyperboloid with the first receiver 221 and the 3rd receiver 223 and second-phase potential difference 246, determine the 3rd hyperboloid with the first receiver 221 and the 4th receiver 224 and third phase potential difference 247.Intersect by the first hyperboloid, the second hyperboloid, the 3rd hyperboloid the disaggregation determining plurality of points, the disaggregation of plurality of points is the some location index scope of terminal device 210.

The processing mode of processing module u230 to the first representative signal 241, second representative signal 242, third representative signal 243 and the forth generation table signal 244 that receive from each receiver is similar to processing module u130 process first representative signal 141, second representative signal 142 in aforementioned three receiver situations.

Citing is not conduct restriction as illustrating, in limited height, the conditional applied environment of scope girth, because limit with by the size of environment, the granting of the present invention point set cooperation of only extracting in height interval applicable in this applied environment and range intervals is the some location index scope of middle-end equipment 210, thus reduces a location index scope further.

a kind of position-based index choose system---choose components of system as directed

Fig. 3 be the retrieval of a kind of position-based choose system choose components of system as directed.Illustrate in Fig. 3 the retrieval of a kind of position-based choose system choose components of system as directed 300, illustrate side view 310, the top view 320 of choosing components of system as directed 300.Citing is not as illustrating as restriction, and wherein side view 310 illustrates and originally chooses system 300 typical height, width, conditional applied environment of length tool in space.

In three receiver situations, receiver 316 can be coupled into a set of line position index range determining device with processing module 130, and in four receiver situations, receiver 316 can be coupled into a set of some location index ranges determination device with processing module 230.

In order to provide simple illustrative example of the present invention, namely in order to illustrate instead of in order to limit, this describes the situation that set forth single terminal end equipment and a set of location index ranges determination device, but those skilled in the art can be easy to recognize: method of the present invention also goes for the situation of multi-terminal equipment and many cover location index ranges determination device.In order to avoid hello prolixity in discussing below, that single terminal device is only discussed sometimes with situation that is a set of location index ranges determination device.This should be not such be interpreted as get rid of multiple terminal device and many cover location index ranges determination device, they serve as a part for the application system of the more complicated whole applied environment of comprehensive covering.

In order to more describe the spirit of the inventive method in detail, the side view 310, the top view 320 that provide the embodiment of a three dimensions applied environment carry out vivider explanation to this embodiment.There is the hand-held terminal device of user 311, first Reference 312, second Reference 313, the 3rd Reference 314, the 4th Reference 315 in diagram applied environment, the location index range determination module be coupled with processing module 330 by least three receiver devices 316 is to determine the location index scope 317 of terminal device under this applied environment physical dimension limits.

Follow-up citing and in illustrating for convenience of explanation and composition, all receiver 316 is arranged on one jiao of applied environment top, this should not be construed the mounting means that the present invention gets rid of other, only otherwise violate the inventive method to the restriction of two of position relationship between receiver features, receiver 316 just can be arranged on the position such as wall, corner possessing the spacious visual field.

According to the dense degree of Reference in applied environment, there are two kinds of situations:

One is in three receiver situations, the a set of line position index range determining device adopting receiver 316 and processing module 130 to be coupled into determines that the line position index range of the terminal device 311 that user holds is chosen, and this mode is suitable for the situation that in applied environment, the dense degree of Reference is relatively low.

Two is in four receiver situations, the a set of some location index ranges determination device adopting receiver 316 and processing module 230 to be coupled into determines that the some location index scope of the terminal device 311 that user holds is chosen, and this mode is suitable for the relatively high situation of the dense degree of Reference in applied environment.

In three receiver situations, user initiates to choose operation by the terminal device 311 held.The sound mark signal that terminal device 311 transmission frequency and form have been arranged, and the direction vector 318 passing through its integrated direction recognition device identification terminal equipment 311.The plurality of curves of the line position index range of the line position index range determining device determination terminal device 311 be coupled into by receiver 316 and processing module u130.Citing is not as illustrating as restriction, because the restriction of the height of its applied environment, scope, the line position index range 317 of terminal device 311 is only one section that two of plurality of curves meet applicable height limitation.Although choose the line position ranges determination device of system 300 can determine the line position index range 317 of terminal device, but still can not determine the definite position of terminal device 311.This is because the shortcoming of the location index ranging technique of the present invention's employing is determined, although location index ranging technique of the present invention only needs the phase differential being received sound mark signal by more each receiver, and simple algorithm realization just can realize the determination to position index range.But its shortcoming is exactly many solutions of location, namely finally cannot determine the accurate location of terminal device 311 within the scope of the location index determined.Correspondingly, the above-mentioned shortcoming that the present invention coordinates the method chosen to use together can effectively to overcome this location index scope to determine to exist with this cheapness, simple location index ranging technique, thus realize cheap, simple, a position-based index of being convenient to installation choose system.The logic of this cooperation is: determine the line position index range 317 of terminal device 311 in position index range determining device after, with the first Reference 312, second Reference 313, 3rd Reference 314, the volume coordinate of the known position of the 4th Reference 315 is starting point, with the opposite direction vector 319 of the direction vector 318 of the terminal device 311 identified for index direction, index is carried out to the line position index range 317 of terminal device 311, every its effective index range Reference that can index in the effective range of the line position index range 317 of terminal device 311 be selected object or one of.Each Reference of each like this Reference (312,313,314,315) is when carrying out reverse indexing and in the effective range that can index terminal device 311, while the accurate location determining terminal device 311, also determine simultaneously its for selected object or one of.Citing is not conduct restriction as illustrating, in this example, only have effective index range 331 of the second Reference 313 can index in effective index range of the line position index range of terminal device 311, therefore the second Reference 313 choose the selected object of operation for this.Reference in applied environment be not intensive especially in, above-mentioned method of choosing both overcomes the problem cannot accurately determined terminal device position 311 well, achieves this at an easy rate, simply again and chooses system.And general applied environment, citing is not conduct restriction as illustrating, Reference (such as household electrical appliances, billboard, the bookshelf etc.) dense degree of the environment such as the home appliance in such as home environment, street, library is not high in the ordinary course of things, is applicable to the application of the inventive method.Its essence is because in applied environment, Reference dense degree is relatively low, user chooses its second Reference 313 for choosing by terminal device 311, when user utilizes terminal device 311 to choose in the sensing deviation range allowed, with the second Reference 313 for starting point, be that index relative just can index in the line position index range of terminal device 311 with the opposite vector 319 of the direction vector 318 of identification terminal equipment 311, thus realize choosing operation.Only have pole individually, small probability exist coordinate position completely and user for Reference other Reference reverse indexings non-conterminous of choosing to other parts in the line position index range of terminal device 311, thus realize mistake and choose.Now, system can by providing the substantive name item (such as fan, air-conditioning, televisor etc.) of Reference to be chosen to user in the mode of list, so that user confirms its Reference for choosing further.If often to make a mistake the event chosen being positioned at its region accustomed to using user, or the probability chosen of making a mistake is comparatively large, the Reference chosen by mistake when advising that suitable adjustment often makes a mistake middle or the adjustment installation site of receiver device in applied environment are evaded further making a mistake and are chosen.

When four receivers, receiver 316 and processing module u230 is adopted to be coupled into the some location index scope that a set of some location index ranges determination device determines the terminal device that user holds, reduce the location index scope of terminal device so further, the probability that reduce further makes a mistake chooses, the system of choosing of the position-based index of employing of the present invention four receiver being is applicable to the situation that in applied environment, Reference dense degree is relatively high.Citing is not conduct restriction as illustrating, the situation that in applied environment, Reference dense degree is relatively high, such as: the situations such as storehouse, Dungeon storehouse, hypermarket.

the explanation of effective index range

Fig. 4 is the illustrative diagram of the effective index range of Reference of the positioning system that a kind of position-based index is described.In Fig. 4, illustrate the top view 400 of application example of the present invention, wherein applied environment border 410, terminal device 421, first Reference 431, second Reference 432 in it, the 3rd Reference 433.Wherein terminal device 421 is location index range section first 441, location index range section second 442, location index range section the third 443, location index scope fourth 444 by the location index scope that location index scope certainty annuity is determined.Wherein, because location index range section the third 443, location index range section fourth 444 are outside applied environment border 410, are subject to applied environment physical dimension and are restricted to invalid index range part.Graphical user uses terminal device 421 for choosing the first Reference 431, chooses system after obtaining the effective location index range section first 441 of terminal device 421, location index range section second 442 by location index scope certainty annuity and the restriction of applied environment physical dimension.452 be reverse indexing direction with the opposite direction of the direction vector 451 of the terminal device 421 identified vector, with effective location index range section first 441, the location index range section second 442 of its effective index range index terminal device 421 by each position at each Reference (431,432,433) place.Wherein effective index range of each Reference forms by two: the projected area 461 of the upper Reference of (1) opposite direction vector itself.(2) be the radian that the symmetrical axisymmetric index angle of flare 462 is expanded with opposite vector 452, above-mentioned two parts together constitute effective index range of each Reference.The model space geometric of itself wherein as the Reference with reference to project objects can input according to the physical dimension of the Reference of the reality of its correspondence, also can set according to the hobby of user.And the index angle of flare 462 is used to the error that exists in the actual orientation angle of redundant subscribers when choosing the Reference for choosing, similarly, the size of the index angle of flare 462 also can set according to the use habit of user and hobby.

the mode that scope is drawn a circle is chosen

Fig. 5 is the schematic diagram that mode that scope is drawn a circle defines selected scope, not as restriction, in the applied environment of Fig. 5, Reference 1, Reference 2 502, Reference 3 503, Reference 4 504, Reference 5 505, Reference 6 506 is there is in citing as illustrating.User holds hand-held terminal device with arbitrary shape delineation selected scope 512, terminal device draws a circle to approve the direction vector bundle 511 of identification terminal equipment in real time in the process of selected scope 512 user, formed conoid with direction vector bundle 511 and selected scope 512, and calculated the virtual vertex 513 of similar cone.With virtual vertex 513 for starting point, the place-centric of each Reference (501,502,503,504,505,506) is terminal structure line segment, there is intersection point in the line segment that line segment, virtual vertex 513 and Reference 6 506 place-centric that wherein virtual vertex 513 and Reference 4 504 place-centric construct construct and selected scope 512, namely Reference 4 504, Reference 6 506 are selected object.User is using terminal device with in the process of arbitrary shape delineation selected scope 512, it is meet man-machine physiological that the direction vector bundle of the terminal device identified in this selected scope 512 and this scope process of delineation forms conoid, draws a circle can form opening towards outer dead centre to the conoid of user because the terminal device that generally user is held by hand take ancon as fulcrum.User can according to the size oneself wanting the scope chosen to adjust its scope to draw a circle.Wherein, the area of selected scope 512 is larger, and virtual vertex 513 is nearer apart from the distance of bottom surface selected scope 512, the equipment chosen more (choose out of true, can realize batch and choose); The area of selected scope 512 is less, and virtual vertex 513 is far away apart from the distance of bottom surface selected scope 512, the equipment chosen fewer (choosing more accurate).User can draw a circle to approve the quantity wanting selected scope and equipment neatly, and meanwhile, terminal device can trigger automatically using the operation of drawing a circle of the user detected as trigger pip chooses system to choose Reference, greatly improves the experience of user.

a kind of method that position-based index is chosen

Fig. 6 is the process flow diagram that method chosen in a kind of position-based index.The method 600 that position-based index is chosen starts at begin block 601.As shown in by block 602, method 600 is by terminal device transmitting sound mark signal and the direction vector of identification terminal equipment.As shown in by block 603, by each receiver, (the distance d of each receiver distance reference receiver is not more than the twice of the minimum wavelength L of sound mark signal to method 600.In three receiver situations, three receivers are not point-blank; In four receiver situations, four receivers are not in a plane.) continuous reception sound mark signal;

In three receiver situations, method 600, with specific order, is carried out continuously: (1), as shown in by block 604, is compared and obtained first-phase potential difference, obtain the fisrt feature of sound mark signal; (2) as shown in by block 605, compare and obtain second-phase potential difference, obtain the second feature of sound mark signal; And as shown in by block 607, the restriction of connected applications environment physical dimension solves the line position index range that mathematical model obtains terminal device.

In four receiver situations, method 600, with specific order, is carried out continuously: (1), as shown in by block 604, is compared and obtained first-phase potential difference, obtain the fisrt feature of sound mark signal; (2) as shown in by block 605, compare and obtain second-phase potential difference, obtain the second feature of sound mark signal; (3) as shown in by block 606, that compares obtains third phase potential difference, obtains the third feature of sound mark signal; And as shown in by block 608, the restriction of connected applications environment physical dimension solves the some location index scope that mathematical model obtains terminal device.

As shown in by block 609, with the position of each Reference for starting point, carry out index with the opposite direction of direction vector vector for the location index scope of index direction to fixed terminal device.As shown in by block 610, each Reference, the Reference that its effective index range can index in the effective range within the scope of the location index of terminal device is selected, chooses described in realization.As shown in by end block 611, method 600 terminates.

Just for illustrative purposes, provide concrete application, to help reader understanding, wherein the present invention is several by what prove in useful a lot of environment.Should also be appreciated that: although the drawings in detail provided and concrete example describe the preferred embodiments of the present invention, but they just for illustrative purposes, system and method of the present invention is not limited to disclosed fine detail and situation, and wherein can carry out various change and not deviate from the spirit of the present invention defined by appended claims.

Claims

1. position-based index choose a system, described system comprises:

At least one terminal device; Each terminal device of at least one terminal device described is positioned at system optional position and emission wavelength is minimum for L sound mark signal; The integrated direction vector recognition device of each terminal device of at least one terminal device described is used for the direction vector of identification terminal equipment; And

At least one Reference; The volume coordinate of the position of each Reference of at least one Reference described is known; And

At least three receiver devices, there are at least two features in the position relationship between described receiver device, when the line position index range of employing three receiver device determination terminal devices: the first receiver device of receiver device, second receiver device and the 3rd receiver device lay respectively at primary importance, the second place and the 3rd position, receiver device distinguishes at least two features of described sound mark signal, described at least two features choosing system to utilize described sound mark signal, the sound mark signal wavelength received and the displace analysis mathematical model of each receiver device the restriction of connected applications environment physical dimension obtain the line position index range of described terminal device, when the some location index scope of employing four receiver device determination terminal devices: the first receiver device of receiver device, second receiver device, 3rd receiver device and the 4th receiver device are divided into and are positioned at primary importance, the second place, 3rd position and the 4th position, receiver device distinguishes at least three features of described sound mark signal, described at least three features choosing system to utilize described sound mark signal, the sound mark signal wavelength received and the displace analysis mathematical model of each receiver device the restriction of connected applications environment physical dimension obtain the some location index scope of described terminal device, described choose system to utilize described terminal device location index scope, the opposite direction vector of described direction vector, each Reference position known spatial coordinate realize described in choose.

2. a kind of position-based index according to claim 1 choose system, when employing three receiver devices determine the line position index range of described terminal device, at least two features of the sound mark signal that wherein said receiver device is distinguished are: with a receiver device for reference to receiver device, the sound mark signal received with it for reference to and the sound mark signal that receives of other two receiver devices compare and obtain first-phase potential difference and second-phase potential difference; When employing four receiver devices determine the some location index scope of described terminal device, at least three features of the sound mark signal that wherein said receiver device is distinguished are: with a receiving equipment for reference to receiver device, the sound mark signal received with it for reference to and the sound mark signal that receives of other three receiver devices compare and obtain first-phase potential difference, second-phase potential difference and third phase potential difference.

3. a kind of position-based index according to claim 1 choose system, two features of the position relationship between wherein said each receiver are: (1) is not more than the twice of the minimum wavelength L of sound mark signal with reference to the distance d between receiver device and other receiver devices; (2) when employing three receiver devices determine the line position index range of described terminal device, three receiver devices are not point-blank; When employing four receiver devices determine the some location index scope of described terminal device, four receiver devices are not in a plane.

4. a kind of position-based index according to claim 1 choose system, with the volume coordinate of the known position of each Reference of described Reference for starting point, with the opposite direction of the direction vector of the terminal device identified vector for index direction, index is carried out to the location index scope of terminal device, its effective index range Reference that can index in the effective range of terminal device every be selected Reference or one of, choose described in realization.

5. a kind of position-based index according to claim 4 choose system, wherein for each Reference of described Reference, effective index range of its correspondence and the sectional area of described Reference in described index direction, the index angle of flare and the distance apart from the location index scope of described terminal device determine jointly.

6. a kind of position-based index according to claim 4 choose system, a plurality of References of wherein said Reference meet its effective index range when can index in the effective range of the location index scope of described terminal device, described system of choosing submits the list to be selected comprising the Reference meeting above-mentioned condition to, so that user therefrom determines the Reference for choosing further to user by terminal device.

7. a kind of position-based index according to claim 1 choose system, wherein said location index scope comprises: the line position index range of the terminal device that (1) is determined in employing three receiver device situation, the some location index scope of the terminal device that (2) are determined in employing four receiver device situation.

8. a kind of position-based index according to claim 1 choose system, when employing four receiver devices determine the some location index scope of the solution of described terminal device position, user can define by terminal device the scope chosen in the mode that scope is drawn a circle, the face set of the described solution choosing the scope of system determination terminal device to draw a circle, and build virtual conoid according to the opposite direction vector bundle of the terminal device direction vector identified in the process of drawing a circle, obtain the vertex set gathering corresponding virtual conoid with the face of the solution of described scope of drawing a circle, construct with summit each in described vertex set as starting point is to the line segment aggregate of described each Reference, wherein, its line segment every can be corresponding with it scope of drawing a circle there is the Reference and selected occured simultaneously, choose described in realization.

9. position-based index choose a method, described method comprises step:

Step one, described terminal device are choosing in system optional position with specific order:

Emission wavelength is minimum is the sound mark signal of L;

The direction vector information of identification terminal equipment;

Described sound mark signal is received in described primary importance, the second place and the 3rd position;

With a receiving position for reference receiving position, distance d between described reference position and other two receiving positions is not more than the twice of the minimum wavelength L of sound mark signal, described reference position and other two receiving positions are not point-blank, with the sound mark signal received with reference to receiving position for reference to and the sound mark signal that receives of other two receiving positions compare obtain first-phase potential difference and second-phase potential difference, in conjunction with first-phase potential difference, second-phase potential difference, the sound mark signal wavelength received and the volume coordinate of each receiver location also try to achieve the line position index range of described terminal device with reference to the restriction of applied environment physical dimension,

Described sound mark signal is received in described primary importance, the second place, the 3rd position and the 4th position;

With a receiving position for reference position, distance d between described reference position and other three receiving positions is not more than the twice of the minimum wavelength L of sound mark signal, described reference position and other three receiving positions are not in a plane, with the sound mark signal received with reference to receiving position for reference to and the sound mark signal that receives of other three receiving positions compare and obtain first-phase potential difference, second-phase potential difference and third phase potential difference, in conjunction with first-phase potential difference, second-phase potential difference, third phase potential difference, the sound mark signal wavelength received and the volume coordinate of each receiver location also try to achieve described terminal device point location index scope with reference to the set size restriction of applied environment,

Step 3, with the volume coordinate of the known position of each Reference of described Reference for starting point, with the opposite direction of the direction vector of the terminal device identified vector for index direction, index is carried out to the location index scope of described terminal device, its effective index range Reference that can index in the effective range of terminal device every be selected Reference or one of, choose described in realization.