CN105699936A - Smart home indoor positioning method - Google Patents
Smart home indoor positioning method Download PDFInfo
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- CN105699936A CN105699936A CN201410694324.XA CN201410694324A CN105699936A CN 105699936 A CN105699936 A CN 105699936A CN 201410694324 A CN201410694324 A CN 201410694324A CN 105699936 A CN105699936 A CN 105699936A
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Abstract
The invention discloses a smart home indoor positioning method comprising an environment sound detection and identification step, a voice signal uploading step in which a voice receiving device sends an identification result of matching identification success and the signal intensity to a central controller, and a user position locating step in which the central controller judges the position of a sound source according to the intensity of a voice signal identified by the voice receiving device and the position in a home space corresponding to the IPV6 address of the voice receiving device. According to the smart home indoor positioning method of the invention, the position of a person in a space is determined by picking up a voice signal of the person in the space through the voice receiving device, so the computational burden on the central controller is reduced. The position of a person in a space is determined based on a voice signal of the person, voice is of good penetrability and diffraction and is not easily affected by furniture arrangement, and the detection sensitivity is high.
Description
Technical field
The invention belongs to wired home technical field, specifically, relate to a kind of wired home indoor orientation method。
Background technology
Wired home is a multifunctional network system, utilize advanced computer, network communication, automatically control, without advanced technologies such as networkings, various intelligent appliance functions are carried out organic combination, realizes centralized Control by home gateway or other types intelligent communication equipment。The people (user) location, locus residing in wired home is a basic technique problems in wired home application。The Indoor Location Information of people can be used for adjusting household electrical appliances duty, accurately judging the estimation of the object of voice command, quantity of motion, affairs prompt, security protection early warning etc.。
Current indoor positioning mainly has three kinds of implementations。One is based on passive detection, for instance use photographic head and computer image recognition technology " finding out " people position in space。Another way is based on object and actively sends signal, and by the parameter of sensor senses signal and intensity, Extrapolation goes out the position of signal source。Such as wifi architecture, what it actually detected is the position at wifi equipment (mobile phone) this signal source place with user。The third is mixed model, actively with passively combine, sensor is mutual with the equipment generation information with user and then the position at perception user place。Such as Bluetooth beacon, its timing sends faint Bluetooth signal, after smart mobile phone with user receives the signal (comprising the id information of Bluetooth beacon in signal) that closest several Bluetooth beacons send, finding they positional informationes in physical space by wireless network according to id information, the Bluetooth signal intensity then sent according to them and positional information calculation go out the position at user place。Any of the above three kinds location mode, is required for setting up sensor position information data base。Orientating example as with Bluetooth beacon, it is necessary first to mark out the ID of each Bluetooth beacon and the position at they places on map, the layout of Bluetooth beacon and installation are engineering problems。Beacon is arranged very little, it is impossible to reach enough positioning precisions。And arrange it is also too much a kind of waste, arrange how many Bluetooth beacons, be arranged on and where go up, how to reduce furniture to the decay of Bluetooth signal and interference, be all problems of some row puzzlement engineering constructions。Such as photographic head cost is high, and during work, power consumption is big, complex software, once after being broken through by hacker, it is easy to obtaining the bulk information in room by photographic head, privacy and household safe are easily invaded。Body infrared facility volume is big, and installation site is substantially (can not block), it is impossible to identify the situation that many people are on the scene。Wifi location and Bluetooth beacon location be only applicable to the situation of carrying mobile phone。Bluetooth and wifi signal, owing to there is situations such as reflecting and block, generally require according to indoor practical service environment, can normally use after data are carried out adjustment。
Summary of the invention
The present invention is to solve that existing indoor orientation method needs to set up sensor position information data base, or owing to there is reflection and the problem blocking reliability of positioning difference in bluetooth and wifi signal, propose a kind of wired home indoor orientation method, IPV6 address based on voice intensity and pronunciation receiver positions, it is possible to solve the problems referred to above。
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of wired home indoor orientation method, comprises the following steps:
Ambient sound detection identification step: pronunciation receiver receives and gathers environmental sound signal, and itself and kinsfolk's audio frequency characteristics signal are carried out match cognization；
Acoustical signal uploading step: successful for match cognization recognition result and signal intensity are sent to central controller by described pronunciation receiver。
Customer location positioning step: the position in domestic space corresponding to sound signal intensity that central controller recognizes according to pronunciation receiver and the IPV6 address of pronunciation receiver, judges the position of sound source。
Further, in described customer location positioning step, the locus of the IPV6 address of pronunciation receiver Yu its place is bound into a form, and it is stored in described central controller, described central controller compares and receives the pronunciation receiver that voice signal intensity is the strongest, and lookup table, the IPV6 address according to this pronunciation receiver, determine the locus of this pronunciation receiver, and using this locus as the position that user is positioned。
Further, before described ambient sound detects identification step, also include kinsfolk's audio frequency characteristics signal receiving step: pronunciation receiver receives kinsfolk's audio frequency characteristics signal that central controller sends, and carries out local preservation。
Further, described acoustical signal uploading step includes following sub-step:
(21), Real-time Collection environmental sound signal, and by its intensity compared with threshold value；
(22), when environmental sound signal intensity is more than threshold value, the acoustical signal of continuous some seconds is recorded；
(23), the acoustical signal recorded is carried out match cognization with the local kinsfolk's audio frequency characteristics signal preserved。
Further, after described sound uploading step, also including central controller and send the step of signal of ceasing and desisting order, described pronunciation receiver receives signal of ceasing and desisting order, and terminates this handling process。
Further, in described sound uploading step, also include the step sending the successful acoustical signal of non-match cognization to central controller, pronunciation receiver issues central controller after being compressed by successful for non-match cognization acoustical signal, the acoustical signal that described central controller analysis receives, if central controller judges to process follow-up acoustical signal, then send, to pronunciation receiver, signal of ceasing and desisting order, otherwise, send the command signal continuing to gather to pronunciation receiver, described pronunciation receiver returns step (22)。
Further, in described step (22), when environmental sound signal intensity is more than threshold value, record the acoustical signal of continuous 3～15 seconds。
Preferably, described pronunciation receiver is wireless microphone。
Preferably, described central controller is communicated by Zigbee communication mode with described pronunciation receiver。
Further, in described ambient sound detection identification step, the algorithm that gathered environmental sound signal carries out match cognization is DTW algorithm。
Compared with prior art, advantages of the present invention and the wired home indoor orientation method having the benefit effect that the present invention, the acoustical signal of people in domestic space is picked up by pronunciation receiver, determine enunciator position in space, first acoustical signal is carried out match cognization by pronunciation receiver, only that the acoustical signal of successful matching is sensitive, and pairing result and signal intensity are sent to central controller calculating。The amount of calculation of central controller can be reduced。Adopting acoustical signal to determine enunciator position in space, sound has good penetrance and diffractive, is susceptible to the impact that furniture is put, and detection sensitivity is high。
After reading in conjunction with the accompanying the detailed description of embodiment of the present invention, the other features and advantages of the invention will become clearer from。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is a kind of embodiment flow chart of wired home indoor orientation method proposed by the invention；
Fig. 2 is the pronunciation receiver communication network schematic diagram of wired home indoor orientation method proposed by the invention；
Fig. 3 is kinsfolk's audio frequency characteristics signal receiving step flow chart of wired home indoor orientation method proposed by the invention；
Fig. 4 is the sub-step flow chart of the acoustical signal uploading step of wired home indoor orientation method proposed by the invention。
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 clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
Embodiment one, the present embodiment proposes a kind of wired home indoor orientation method, as it is shown in figure 1, comprise the following steps:
Ambient sound detection identification step: pronunciation receiver receives and gathers environmental sound signal, and itself and kinsfolk's audio frequency characteristics signal are carried out match cognization；
Acoustical signal uploading step: successful for match cognization recognition result and signal intensity are sent to central controller by described pronunciation receiver。
Customer location positioning step: the position in domestic space corresponding to sound signal intensity that central controller recognizes according to pronunciation receiver and the IPV6 address of pronunciation receiver, judges the position of sound source。
The wired home indoor orientation method of the present embodiment, the acoustical signal of people in domestic space is picked up by pronunciation receiver, determine enunciator position in space, first acoustical signal is carried out match cognization by pronunciation receiver, only that the acoustical signal of successful matching is sensitive, and pairing result and signal intensity are sent to central controller calculating, it is possible to reduce the amount of calculation of central controller。Central controller is according to sound signal intensity, and the location positioning sound source of known pronunciation receiver。Adopting acoustical signal to determine enunciator position in space, sound has good penetrance and diffractive, is susceptible to the impact that furniture is put, and detection sensitivity is high。And, the pronunciation receiver cost that the present embodiment adopts is far below photographic head, and can snugly install (only needing to expose a small pin hole pickup sound), will not destroy the attractive in appearance of furniture or wall。The sense of depression that people in room is not monitored by photographic head, uses to user and brings pleasurable sensation。By picking up the mode of user voice location, need not carry any device with user only needs to send sound and can realize location。If user has dysphonia, also by clapping hands, ringing a bell, the method such as pan, air blowing loudspeaker sends specific sound to use native system, as long as this specific sound audio frequency characteristics signals collecting is preserved, so as to carry out match cognization, this provides conveniently for disabled。The another one advantage of employing sound location is: (three-point fix is a kind of location technology to realize three-point fix to be not required to the pronunciation receiver all laying more than 3 in each room, by the distance between signal source to three receptor, extrapolate the coordinate of signal source。Usual Bluetooth beacon and wifi location are all use three-point fix technology)。In a lot of situations, we are not required to the position of sufficiently accurately perception people, we have only to pay close attention to people and send the position at place during voice command, such as, people is nearest apart from which pronunciation receiver, can be used as wired home and formulates the condition of decision-making, and three-point positioning method is computationally intensive, real-time cannot ensure, although the position calculated is relatively accurate, but being a kind of wasting of resources for wired home, many times it is not required to so high positioning precision。
As a preferred embodiment, in described customer location positioning step, the locus of the IPV6 address of pronunciation receiver Yu its place is bound into a form, and it is stored in described central controller, described central controller compares and receives the pronunciation receiver that voice signal intensity is the strongest, and lookup table, the IPV6 address according to this pronunciation receiver, determine the locus of this pronunciation receiver, and using this locus as the position that user is positioned。As shown in Table 1:
The IPV6 address of form 1 pronunciation receiver and position synopsis
Owing to IPV6 address is abundant, the problem that therefore there is no concern that address depletion。In general, principal home's electricity equipment is all Yi Qiang, installs according to ceiling or floor, is therefore required for cartesian coordinate system and accurately describes their locus, so can greatly reduce data volume。
Additionally, IPV6 is advanced network technology standard, uses IPV6 technology can provide an independent IP address for each device node, the topological structure of complex network can be simplified relative to IPV4, and higher network security performance is provided。The utilization of IPV6 makes native system can support substantial amounts of node (exceeding well over the capacity of IPV4 200 nodes that can be supported by)。In theory, it is only limited by the restriction of actual demand based on the pronunciation receiver quantity of IPV6, and not by the restriction of IP address。
In the present embodiment, preferred described pronunciation receiver is wireless microphone, as in figure 2 it is shown, described central controller is communicated by Zigbee communication mode with described pronunciation receiver。
Zigbee gateway is the bridge of link central controller and wireless microphone network。Zigbee is a kind of mechanics of communication, and it supports the technology such as low-power consumption, MANET, is means of communication common in wired home。Zigbee equipment is for saving electric power, and it only uses minimum power to send signal, therefore can not carry out long-distance transmissions。But each Zigbee equipment has route relay function, a packet that node sends farther out, it is possible to delivered in relays to Zigbee gateway by each Zigbee equipment on the way。Zigbee also has redundancy and adaptive ability, if certain via node breaks down, it can the node that closes on of Automatic-searching, update routed path。
The present embodiment is combined with ZigBee technology by IPV6, for present system provides the basic network communication architecture most having superiority of effectiveness, takes into account performance, technical difficulty and expansibility。
As it is shown on figure 3, in the present embodiment, before described ambient sound detects identification step, also include kinsfolk's audio frequency characteristics signal receiving step: pronunciation receiver receives kinsfolk's audio frequency characteristics signal that central controller sends, and carries out local preservation。User can record the spoken sounds of specific crowd on central controller, forms audio characteristic data。These audio frequency characteristics signals are sent to each Wireless microphone device by Zigbee network by central controller, make whole wireless microphone network only the voice signal of specific crowd be kept sensitivity。Advantage of this is that the acoustical signal received is carried out local identification and matching by pronunciation receiver, for the voice messaging that can mate, pronunciation receiver only sends match cognization result and acoustical signal intensity level to central controller, the data traffic of whole network can be reduced, low data traffic is to maintain the key factor of system high performance operation, and then can make native system high performance operation。
As shown in Figure 4, described acoustical signal uploading step includes following sub-step:
S21, Real-time Collection environmental sound signal, and by its intensity compared with threshold value；
S22, when environmental sound signal intensity is more than threshold value, record the acoustical signal of continuous some seconds；
S23, the acoustical signal recorded is carried out match cognization with the local kinsfolk's audio frequency characteristics signal preserved。
Step S21 is the entry condition of whole flow process, and the sound detected when pronunciation receiver initially enters present treatment flow process after exceeding certain threshold value。In general, home environment is constantly present such or such noise, for instance sound, neighbours that the sound that outdoor automobile was opened, outdoor weeder work fit up the noise etc. caused。We term it environmental exact details noise。If environmental exact details noise is less than certain numerical value, then wireless microphone does not enter follow-up handling process, to reduce power consumption saving battery electric power。
Further, in described step S22, when environmental sound signal intensity is more than threshold value, record the acoustical signal of continuous 3～15 seconds。
The sound detected when pronunciation receiver just enters processing links after exceeding threshold value。Processing links is responsible for record acoustical signal。If sound signal intensity exceeded the persistent period of threshold value less than 10 seconds, then recorded sound less than till threshold value。If sound signal intensity persistently higher than threshold value, then records the voice data of first 10 seconds to 15 seconds。Considering disposal ability and the power consumption of wireless microphone, the SoundRec time is unsuitable oversize, is advisable with 3～15 seconds intervals through experiment。Would be likely to occur the pause (namely intensity of sound is less than threshold value) less than 1 second in voice, this situation does not include voice interruption。The sample rate of voice can be 8KHz(and gather 8192 data points each second)。
After described sound uploading step, also including central controller and send the step of signal of ceasing and desisting order, described pronunciation receiver receives signal of ceasing and desisting order, and terminates this handling process。Voice recognition result and signal intensity are sent to central controller by pronunciation receiver, wait the letter in reply of central controller, if central controller is thought need not process follow-up acoustical signal, then replying " stopping " order, pronunciation receiver terminates present treatment flow process after receiving this order。
Further, in described sound uploading step, also include the step sending the successful acoustical signal of non-match cognization to central controller, pronunciation receiver issues central controller after being compressed by successful for non-match cognization acoustical signal, the acoustical signal that described central controller analysis receives, if central controller judges to process follow-up acoustical signal, then send, to pronunciation receiver, signal of ceasing and desisting order, otherwise, send the command signal continuing to gather to pronunciation receiver, described pronunciation receiver returns step S22。If central controller thinks that follow-up sampling is meaningful, then sending the command signal continuing to gather, pronunciation receiver proceeds to processing links after receiving this order。
In the present embodiment, in described ambient sound detection identification step, pronunciation receiver extracts kinsfolk's audio frequency characteristics signal successively with processing unit DSP, DSP from local storage, mates with the voice signal recorded。The algorithm that coupling uses preferably employs DTW algorithm (DynamicTimeWarping, dynamic time warping algorithm), and this is a kind of algorithm of comparatively classics in speech recognition。
After above-mentioned steps, central computer will produce two class result of calculations。
First kind result of calculation: refer to form 2, is the information of the user having registered (recorded audio frequency characteristics) in systems。
Form 2 first kind result of calculation。
Equations of The Second Kind result of calculation: refer to form 2, this is the sound of stranger, or the sound (such as beat desk, play an instrument) outside certain background background noise of burst。
| Parameter one | -1, represent invalid ID |
| Parameter two | The ID of the wireless microphone that distance sound source is nearest |
| Parameter three | Recording fragment, is available for other system and uses |
Form 3 Equations of The Second Kind result of calculation
Certainly; described above is not limitation of the present invention; the present invention is also not limited to the example above, the change made in the essential scope of the present invention of those skilled in the art, remodeling, interpolation or replacement, also should belong to protection scope of the present invention。
Claims (10)
1. a wired home indoor orientation method, it is characterised in that comprise the following steps:
Ambient sound detection identification step: pronunciation receiver receives and gathers environmental sound signal, and itself and kinsfolk's audio frequency characteristics signal are carried out match cognization；
Acoustical signal uploading step: successful for match cognization recognition result and signal intensity are sent to central controller by described pronunciation receiver；
Customer location positioning step: the position in domestic space corresponding to sound signal intensity that central controller recognizes according to pronunciation receiver and the IPV6 address of pronunciation receiver, judges the position of sound source。
2. wired home indoor orientation method according to claim 1, it is characterized in that, in described customer location positioning step, the locus of the IPV6 address of pronunciation receiver Yu its place is bound into a form, and it is stored in described central controller, described central controller compares and receives the pronunciation receiver that voice signal intensity is the strongest, and lookup table, IPV6 address according to this pronunciation receiver, determine the locus of this pronunciation receiver, and using this locus as the position that user is positioned。
3. wired home indoor orientation method according to claim 2, it is characterized in that, before described ambient sound detects identification step, also include kinsfolk's audio frequency characteristics signal receiving step: pronunciation receiver receives kinsfolk's audio frequency characteristics signal that central controller sends, and carries out local preservation。
4. wired home indoor orientation method according to claim 3, it is characterised in that described acoustical signal uploading step includes following sub-step:
(21), Real-time Collection environmental sound signal, and by its intensity compared with threshold value；
(22), when environmental sound signal intensity is more than threshold value, the acoustical signal of continuous some seconds is recorded；
(23), the acoustical signal recorded is carried out match cognization with the local kinsfolk's audio frequency characteristics signal preserved。
5. wired home indoor orientation method according to claim 4, it is characterized in that, after described sound uploading step, also include central controller and send the step of signal of ceasing and desisting order, described pronunciation receiver receives signal of ceasing and desisting order, and terminates this handling process。
6. wired home indoor orientation method according to claim 4, it is characterized in that, in described sound uploading step, also include the step sending the successful acoustical signal of non-match cognization to central controller, pronunciation receiver issues central controller after being compressed by successful for non-match cognization acoustical signal, the acoustical signal that described central controller analysis receives, if central controller judges to process follow-up acoustical signal, then send, to pronunciation receiver, signal of ceasing and desisting order, otherwise, the command signal continuing to gather is sent to pronunciation receiver, described pronunciation receiver returns step (22)。
7. wired home indoor orientation method according to claim 4, it is characterised in that in described step (22), when environmental sound signal intensity is more than threshold value, records the acoustical signal of continuous 3～15 seconds。
8. the wired home indoor orientation method according to any one of claim 1-7, it is characterised in that described pronunciation receiver is wireless microphone。
9. the wired home indoor orientation method according to any one of claim 1-7, it is characterised in that described central controller is communicated by Zigbee communication mode with described pronunciation receiver。
10. the wired home indoor orientation method according to any one of claim 1-7, it is characterised in that in described ambient sound detection identification step, the algorithm that gathered environmental sound signal carries out match cognization is DTW algorithm。
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| CN108174441A (en) * | 2017-12-11 | 2018-06-15 | 日立楼宇技术（广州）有限公司 | The localization method and device of fully-mechanized mining working stent remote control manipulator |
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| CN108931036A (en) * | 2017-05-18 | 2018-12-04 | 奥克斯空调股份有限公司 | A kind of auditory localization control air-conditioner wind keeps away the method and air conditioner of people |
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