CN105636196A - Indoor positioning method suitable for electronic device and electronic device - Google Patents
Indoor positioning method suitable for electronic device and electronic device Download PDFInfo
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- CN105636196A CN105636196A CN201410620953.8A CN201410620953A CN105636196A CN 105636196 A CN105636196 A CN 105636196A CN 201410620953 A CN201410620953 A CN 201410620953A CN 105636196 A CN105636196 A CN 105636196A
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Abstract
The invention discloses an indoor positioning method suitable for an electronic device and the electronic device. First, a data bank is established which includes at least one virtual position and corresponding environment characteristic information, wherein the environment characteristic information includes at least one corresponding signal waveform characteristic having identifiability. Then, signal changes of a plurality of first signal sources of an indoor environment are detected, and a plurality of pieces of first signal identification information corresponding to the first signal sources are obtained, wherein the first signal identification information represents signal waveform characteristics of signals of the first signal sources which change with time. Next, according to the first signal identification information, the data bank is searched to obtain a search result. When the search result represents that the environment characteristic information and the first signal identification information have similar or the same signal waveform characteristics, the indoor environment where the electronic device is is judged to be a virtual position.
Description
Technical field
The invention relates to indoor orientation method and related electronic device thereof, in particular to a kind of indoor orientation method that can position according to the signal characteristic of indoor environment signal source and related electronic device thereof.
Background technology
In recent years, mancarried device, for instance handheld apparatus, more and more advanced technically and have multifunctionality. For example, handheld apparatus can have communication capacity, has reception Email Information ability, has the telephone directory management application program of advanced person, allows multimedia and have other functions various. Due to the convenience that these multi-function devices bring, also make one of these device daily necessities becoming people.
Along with the change of user demand and the popularizing of network technology of user, the application on the mancarried device of user such as smart mobile phone may adjust because of local environment, for instance: when user is had a meeting at meeting room, mobile phone should take quiet pattern. Therefore, some mancarried devices start to provide the function of suitable ground sex service, for instance: when picking out user and having a meeting at meeting room, mobile phone is just automatically regulated to be silent mode. But, it is provided that the premise of suitable ground sex service is the environment position allowing for first orienting user place, especially when user is in indoor.
A kind of common indoor positioning system utilizes " radio signal strength instruction identifies basis " (RadioSignalStrengthIndicator-signature-based, RSSI-signature-based) technology to carry out the location of indoor. RSSI identifies the degree of strength that basic technology receives mainly by signal between the signal transmitting station/receiving platform (being generally wireless network base stations) in one signal receiver/emitter and multiple different places being arranged at indoor or transmits, and learns the position of this signal receiver/emitter further.
But, basic system carries out the positional accuracy of indoor positioning and can identify ageing aging along with this RSSI and lower to use RSSI to identify. In addition, noise jamming that each signal transmitting station/antenna directivity of receiving platform, detecting indoor article movement or fixed obstacle cause, carry the change in angle when this signal receiver/emitter moves, position and direction, and the change of beacon (beacon) distance etc. all can affect the accuracy of existing indoor positioning. Another mode is accurately positioned for directly utilizing alignment system such as global positioning system (GPS), but it easily brings personal privacy right doubt.
Accordingly, it would be desirable to a kind of easier indoor orientation method.
Summary of the invention
In view of this, the present invention provides a kind of indoor orientation method suitable in electronic installation and electronic installation thereof.
A kind of indoor orientation method suitable in electronic installation of the present invention, in order to an indoor environment at identification electronic installation place. Method comprises the following steps. First, setting up an information bank, wherein information bank includes the environmental characteristic information of at least one virtual location and correspondence thereof, and environmental characteristic information includes the signal waveform feature of at least one tool identification corresponding to virtual location. Then, the signal intensity of plural number first signal source of detecting chamber environment, obtain plural number the first signal identification information corresponding to the first signal source, wherein the first signal identification information represents the signal waveform feature that the signal of the first signal source changes according to the time. Afterwards, according to the first signal identification information, search for data storehouse, obtains a search result. When search result represents the signal waveform feature similarity of environmental characteristic information and the first signal identification information or is identical, it is determined that the indoor environment at electronic installation place is virtual location.
The present invention also provides for a kind of electronic installation, and it includes storage element, wireless module and processing unit. storage element stores an information bank, and wherein information bank includes the environmental characteristic information of at least one virtual location and correspondence thereof, and environmental characteristic information includes the signal waveform feature of at least one tool identification corresponding to virtual location. processing unit is coupled to storage element and wireless module, in order to be detected the signal intensity of plural number first signal source of an indoor environment by wireless module, obtain plural number the first signal identification information corresponding to the first signal source, wherein the first signal identification information represents the signal waveform feature that the signal of the first signal source changes according to the time, according to the first signal identification information, search for data storehouse, obtain a search result, and when search result represents the signal waveform feature similarity of environmental characteristic information and the first signal identification information or be identical, judge that indoor environment is as virtual location.
Said method of the present invention can be the form of program code being embedded in tangible media. When this program code is written into machine and is performed by this machine, this machine becomes to realize the device of disclosed method.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the electronic installation of one embodiment of the invention;
Fig. 2 shows the flow chart of the indoor orientation method of one embodiment of the invention;
Fig. 3 shows the flow chart of the indoor orientation method of another embodiment of the present invention;
Fig. 4 shows the schematic diagram of the information bank of one embodiment of the invention; And
Fig. 5 shows the schematic diagram of the signal waveform feature of the signal source of one embodiment of the invention.
Symbol description:
100��electronic installation; 110��wireless module; 120��processing unit; 130��storage element; 132��information bank;
SA1-SA4��radio signal source;
S202, S204, S206��step;
S302, S304, S306, S308, S310, S312��step;
400��information bank; And 510,520��wave character.
Detailed description of the invention
For the above and other purpose of the present invention, feature and advantage can be become apparent, cited below particularly go out preferred embodiment, and coordinate accompanying drawing, be described in detail below:
Fig. 1 shows the schematic diagram of the electronic installation according to the embodiment of the present invention. It is in a specific range with radio signal source SA1-SA4 according to the electronic installation 100 of the embodiment of the present invention, and can be communicated with each other and data transmission by agreements such as a wireless communication protocol such as bluetooth, NFC, Zigbee, Wireless Fidelitys (WiFi). Wherein, electronic installation 100 and radio signal source SA1-SA4 can be same type or different types of electronic installation, for instance smart mobile phone, personal digital assistant, mobile computer system or panel computer etc. Each radio signal source SA1-SA4 a specific wireless communications protocol such as WIFI agreement can set up radio connecting with device 100, it is made to be wirelessly connected to device 100, therefore the transmission of data can be wirelessly carried out with device 100, for instance: can by a WIFI agreement transmitting WIFI wireless signal to device 100. For example, in one embodiment, radio signal source SA1 and SA2 can be that fixed signal source is as being set in radio base station or the WAP (Accesspoint of fixed position, AP), radio signal source SA3 and SA4 then for floating type signal source as having the mobile device of radio base station or WAP function, but can be not limited to this. For example, radio signal source can be erected at fixing AP in meeting room and can periodically open the mobile device etc. of other user of radio base station function in meeting room.
Electronic installation 100 can at least include wireless module 110, processing unit 120 and a storage element 130. Wireless module 110 agreement such as specific wireless communications protocol such as bluetooth, NFC, Zigbee, WIFI etc. can set up a radio connecting with other radio signal source, make it be wirelessly connected to radio signal source SA1-SA4, therefore can receive the radio signal source SA1-SA4 wireless signal sent such as WIFI signal. In one embodiment, wireless module 110 can farther include fundamental frequency (baseband) unit (not illustrating) and radio frequency (RadioFrequency, RF) module (not illustrating). Fundamental frequency unit can include multiple hardware unit and process to perform fundamental frequency signal, including analog digital conversion (analogtodigitalconversion, ADC)/digital-to-analogue conversion (digitaltoanalogconversion, DAC), gain (gain) adjustment, modulation and solution modulation and coding/decoding etc. Radio-frequency module can receive rf wireless signal, and rf wireless signal is converted to fundamental frequency signal to transfer to fundamental frequency unit to process further, or receives fundamental frequency signal from fundamental frequency unit, and fundamental frequency signal is converted to rf wireless signal to transmit. Radio-frequency module also can include multiple hardware unit to perform the conversion of above-mentioned radio frequency, for example, radio-frequency module can include the frequency mixer (mixer) the concussion carrier wave to be multiplied by by fundamental frequency signal in the radio frequency of mobile communication system, wherein this radio frequency can access that system (WCDMA) uses for wide band code division multiplexing 900 megahertzs, 1900 megahertzs or 2100 megahertzs, or 900 megahertzs, 2100 megahertzs or 2600 megahertzs that long evolving system (LTE) uses, or the standard depending on other wireless access techniques. Additionally, processing unit 120 may be used to control the running status of wireless module 110 and other functional module, for instance in order to provide the screen unit (screenunit) (not illustrating) of man-machine interface and/or button (keypad), in order to store the storage element 130 etc. of application program and the program code of communications protocol. In certain embodiments, screen unit is the screen in conjunction with a touch inductor (not shown). Touch inductor has the touch surface including at least one-dimensional induction apparatus, in order to detect control instrument, such as the contact in its surface such as finger or pointer and movement. Screen unit can also show related data and relevant indicators and interface etc.
Storage element 130 can be various types of storage device such as internal memory or external connection of storage card etc., can store a signal characteristic information bank 132, and its record has several signal waveform features of each virtual location and correspondence thereof. Specifically, information bank 132 can include one or more virtual location and corresponding environment thereof or position feature information, and wherein the position feature information of each virtual location at least includes the signal waveform feature of one or more the recognizable steady change corresponding to this virtual location. About signal characteristic information bank 132 generation details will in after illustrate.
Processing unit 120 (such as: a hardware processor) is coupled to wireless module 110 and storage element 130, may be used to perform the present invention indoor orientation method, its details will in after illustrate. Especially, processing unit 120 can perform a learning procedure, comprises the information bank 132 of the environmental characteristic of all virtual locations in order to the environmental characteristic of each virtual location of Learning Identification user generation. Additionally, processing unit 120 can more perform an Environment identification program, in order to carry out indoor positioning according to aforesaid data storehouse 132, in order to go out the indoor environment at user place according to the signal waveform feature identification of indoor environment. It is to be noted that, owing to the indoor orientation method of the present invention is the virtual location of the indoor environment picking out user place, but not it is accurately positioned out the user which position in indoor environment, therefore without considering the distribution of whole interior space size and sampling, it is applicable to various indoor environment.
Processing unit 120 can perform an indoor orientation method, in order to an indoor environment at identification electronic installation place. First, processing unit 120 performs learning procedure, the signal source signal characteristic of each virtual environment is detected by wireless module 110, set up information bank 132, wherein information bank 132 includes the environmental characteristic information of each virtual location and correspondence thereof, and environmental characteristic information then includes the signal waveform feature of at least one tool identification corresponding to virtual location. The details set up about information bank refers to the related description of figure 2 below.
Then, when processing unit 120 needs to position in unknown indoor environment, perform Environment identification program, signal intensity by wireless module 110 detection all observable first signal source of collecting chamber environment, obtaining one or more the first signal identification information corresponding to each first signal source, wherein the first signal identification information represents the signal waveform feature that the signal of the first signal source changes according to the time. Afterwards, processing unit 120 is according to all of first signal identification information, and search for data storehouse 132, obtains a search result. When search result represents the signal waveform feature similarity of environmental characteristic information and the first signal identification information or be identical, processing unit 120 just judges that the indoor environment at electronic installation place is the virtual location that the first similar or identical signal identification information is corresponding mutually. The related description of figure 3 below is referred to about the details of Environment identification program.
It is to be noted that, in the learning procedure of the virtual location of Learning Identification user, owing to signal can be varied from over time, such as: the RSSI signal intensity of a certain signal source can be subject to the reflection of object because of the propagation of signal, scattering, the impact of the multi-path effects such as diffraction and screen effect, therefore processing unit 120 should can the custom placement location of virtualized position (such as: office) (such as the left-hand side of screen, right-hand side) collect many time dependent strength values of each signal source, thereby find out the environmental characteristic representing each virtual location.
Fig. 2 shows the flow chart of the indoor orientation method of one embodiment of the invention, in order to the environmental characteristic of virtual location of Learning Identification user and produce the information bank of environmental characteristic comprising all virtual locations. Referring to Fig. 1 and Fig. 2. An electronic installation is gone for according to the indoor orientation method of the embodiment of the present invention, such as mancarried device, handheld apparatus such as personal digital assistant, smart mobile phone, mobile phone, mobile Internet access device, digital camera, multimedia player, game device or any other type, but, this area skilled persons is it should be appreciated that the present invention is not limited to this. For example, in this embodiment, indoor orientation method can be performed by the processing unit 120 of electronic installation 100. It is noted that in this embodiment, electronic installation can be move device, the signal of the radio signal source in its detectable any environment and can collect the signal intensity numerical value that each radio signal source changes according to the time.
First, such as step S202, at same virtual location, processing unit 120 is by wireless module 110, and each conventional location putting mobile device for user collects several (such as: may be set to 10) time dependent signal waveforms of signal for each observable signal source. Wherein, the opportunity of collection of data can be behind the place (such as family, office, meeting room etc.) that user to meeting stands mobile device, carries out the collection of data when not disturbing user.
Then, such as step S204, processing unit 120, according to each signal waveform collected, obtains representative average signal waveform. Processing unit 120 can signal waveform that suitably this strokes of adjustment is collected and obtain representative average signal waveform, such as the RSSI intensity of the identical time point of all signal waveforms collected is added General Logistics Department's average computation again and goes out the signal intensity meansigma methods of each point, and then the signal intensity meansigma methods of each point to calculate tries to achieve representative average signal waveform. Will be understood that, in the collection and foundation of signal waveform, once calculate average signal waveform, these several signal waveforms and average waveform can be compared by processing unit 120 further, and comprehensively draw an error change value (such as standard deviation etc.), it is ranked up with the signal power to each signal source of each virtual location, and the bigger signal source of error change value will have less ranking value.
Obtaining after representative average signal waveform, such as step S206, each signal source and representative average signal waveform thereof are stored in information bank, to carry out the foundation of information bank 132.
In certain embodiments, the signal intensity at least one secondary signal source in the detectable virtual location of processing unit 120, obtain at least one signal waveform, according to each signal waveform, calculate an average signal waveform, and average signal waveform is set to environmental characteristic information corresponding to secondary signal source and stores to information bank. Processing unit 120 can more after obtaining average signal waveform, at least one signal waveform in comparison secondary signal source and this average signal waveform, comprehensively draw an error change value, and according to error change value, each secondary signal source of virtual location is ranked up.
Afterwards, then start to relearn the process of identification environmental characteristic when the signal source of a certain virtual location creates a large amount of change (such as: 80% signal source that can accept all changes), wait after having learnt just by the environmental characteristic information updating after study to information bank 132. In certain embodiments, processing unit 120 can more when at least one secondary signal source detecting virtual location produces to change in a large number, re-execute a Learning Identification program, obtain the signal waveform feature of at least one tool identification and the environmental characteristic information that the signal waveform feature of at least one tool identification is set to virtual location corresponding is increased newly to information bank.
Specifically, environmental characteristic information in the daily local environment of the detectable user of processing unit 120, the AP name of the such as Wi-Fi of household, office, meeting room etc. and signal intensity etc., collect the strength values that each group of signal source of each user environment changes according to the time, the mechanical periodicity of observation signal, find out the signal waveform feature of several recognizable steady change in each environment, as the signal characteristic information of this environment, thereby set up the signal characteristic information bank of varying environment and comparison is provided. For example, processing unit 120 can be collected the signal intensity of each signal source in an environment and form one group of vector (SignalStrengthVector, SSV) locus of user is described, for instance: virtual location position_1 can obtain following signal intensity vector SSVposition_1:
SSVposition_1=[SA1,SA2,SA3,SA4,SA5,SA6],
Wherein, SA1-SA6 represents the time dependent signal waveform feature of signal intensity numerical value of six signal source A1-A6 in virtual location position_1 respectively, signal intensity numerical value can be received signal strength (Receivedsignalstrengthindication, RSSI), signal to noise ratio (SignaltoNoiseRatio, SNR) etc. are various can quantized values.
The signal that processing unit 120 can be sequentially collected user each device putting position on each virtual location, each signal source sends, in order to complete the foundation of information bank. Similarly, processing unit 120 by aforementioned Learning Identification program, can obtain the virtual location position_2 signal intensity vector SSVposition_2 being expressed as:
SSVposition_2=[SB1,SB2,SB3,SB4],
Wherein, SB1-SB4 represents the time dependent signal waveform feature of signal intensity numerical value of four representative signal source B1-B4 in virtual location position_2 respectively, and the rest may be inferred. Fig. 4 is the schematic diagram showing the information bank according to the embodiment of the present invention. as shown in Figure 4, information bank 400 includes at least three virtual location Position_1 (such as: office), Position_2 (such as: meeting room) and Position_3 (such as: household) and corresponding environmental characteristic information thereof, wherein the environmental characteristic information of virtual location Position_1 is vector [SA1, SA2, , , .SAK], the environmental characteristic information of virtual location Position_2 is vector [SB1, SB2, , , .SBL] and the environmental characteristic information of virtual location Position_3 be vector [SC1, SC2, , , .SCM], the rest may be inferred. wherein, K, L, M can be identical or different numerical value, can determine according to design requirement and signal intensity. for example, assume that virtual location Position_1 detects N number of signal source altogether, then can only take the wave character of the strongest front K (1��K��N) the individual signal source of the signal intensity in signal source to be used as the environmental characteristic information of virtual location Position_1.
Afterwards, when user is in circumstances not known, each WIFI signal of processing unit 120 just detectable circumstances not known and intensity, the wave character finding out its signal is compared with the information bank (such as: information bank 400) built up, to find similar or identical environmental characteristic from information bank, and then provide the corresponding service being suitable for this environment. If it is noted that fail to pick out the virtual location met in information bank, expressing possibility is new virtual location, then start to relearn the position that identification is new.
Fig. 3 shows the flow chart of the indoor orientation method of another embodiment of the present invention, in order to pick out the position of the indoor environment residing for electronic installation. Referring to Fig. 1 and Fig. 3. An electronic installation is gone for according to the indoor orientation method of the embodiment of the present invention, such as mancarried device, handheld apparatus such as personal digital assistant, smart mobile phone, mobile phone, mobile Internet access device, digital camera, multimedia player, game device or any other type, but, this area skilled persons is it should be appreciated that the present invention is not limited to this. It is noted that in this embodiment, it is assumed that electronic installation sets up, already by the Learning Identification program of Fig. 2, the information bank of environmental characteristic information comprising each virtual location and information bank is stored in the storage element of electronic installation.
First, when electronic installation (such as: moves device) is placed in a circumstances not known, processing unit 120 first passes through wireless module 110 and collects all observable WIFI signal source and the change in signal strength thereof of this circumstances not known, finds out the identification characteristic information (step S302) in each WIFI signal source. Wherein, the identification characteristic information in each WIFI signal source can include a WIFI identification code in WIFI signal source and time dependent signal waveform feature thereof. Then, the environmental characteristic information identified in characteristic information and information bank in each WIFI signal source is compared by processing unit 120, and judges whether to find similar environmental characteristic (step S304) from information bank. Wherein, whether the identification characteristic information in each WIFI signal source is similar to the wave character of the environmental characteristic information in information bank by existing algorithm, for instance: the algorithms such as cluster analysis, classification algorithm judge. In certain embodiments, if namely the wave character identifying characteristic information in the WIFI signal source of this circumstances not known can be considered comparison success with the error amount of the wave character of the environmental characteristic information of either signal in information bank less than a given threshold. In certain embodiments, if all signals equal comparison success with the wave character identifying characteristic information in the WIFI signal source of this circumstances not known in a signal intensity vector, similar environmental characteristic can be just judged to. In certain embodiments, if former groups of signals or successful with the equal comparison of signal waveform feature represented by the identification characteristic information of the WIFI signal of this circumstances not known more than the signal of one set group of number in signal intensity vector, similar environmental characteristic can be judged to. For example, assume a certain signal intensity vector includes altogether 6 groups of signals, can just be judged to that similar environmental characteristic or the comparison success equal to the wave character of the signal of this circumstances not known of 6 groups of signals of needs are just judged to similar environmental characteristic more than 3 groups of signals to the equal comparison of signal waveform feature of the signal source of this circumstances not known success. Otherwise, if only 3 groups of signal below are just judged to non-similar environmental characteristic to the wave character comparison of the signal of this circumstances not known success in signal intensity vector, continue next the group environmental characteristic in comparison information bank.
After determining similar environmental characteristic, the position that current for user location just can be recognized as in information bank corresponding to this similar environmental characteristic by processing unit 120. In certain embodiments, one virtual location more includes multiple secondary signal characteristic information and only when all secondary signal characteristic informations and the first signal identification information are all same or similar, and processing unit 120 just judges that the indoor environment at electronic installation 100 place is as this virtual location. In one embodiment, when the wave character of the first signal identification information Yu the secondary signal characteristic information of at least one given amount is all same or similar, processing unit 120 just judges that the indoor environment at electronic installation 100 place is as this virtual location.
(if step S304 is), representing the virtual location such as office that this environment is identification, then processing unit 120 just picks out this circumstances not known is the primary importance (step S306) corresponding to found similar environmental characteristic and the suitable ground sex service (step S308) providing corresponding primary importance. Such as, when primary importance represents meeting room, representing that user is likely to prepare meeting or just in session, corresponding suitable ground sex service can be automatically be set to by electronic installation quiet or automatically turn on notepad, sound-recording function etc. and assist and carry out meeting record, but the present invention is not limited to this.
For example, the wave character of the signal source of each virtual location record of signal source (SSID) the comparison information bank that can first receive from mobile device; Obtain the virtual location that the number of sources that arrives of comparison is wherein several, calculate one by one again and each comparison to signal source between signal difference value (such as: the plural Euclidean distance (Euclideandistance) between the wave character of the identification information of the signal source received and the signal source of each acquired virtual location can be calculated as its signal difference value), the minimum virtual location of signal difference value can be determined into the current position of user. Referring to Fig. 5, it it is the schematic diagram of the signal waveform feature showing the signal source according to the embodiment of the present invention. As shown in Figure 5, assume in information bank a certain group of signal source through collect with arrange after wave character be broken line 510 shown in thick line time, when the broken line 520 that the wave character of the environmental signal sources detected is shown in dotted line, just bringing broken line 510 comparison with thick line, the minimum virtual location of signal difference value can be determined into the current position of user.
In certain embodiments, it is assumed that electromagnetic wave is the transmission of a kind of energy, vertical there are some to cover, the interference of scattering and barrier, but when environment is constant, signal is still likely to presenting of regular property. Therefore, the feature of a certain signal source is obtained for a certain place, be within a period of time record each time point signal intensity (as: the 0th second record once, once, the 4th second record is once for 2nd second record ... etc.) become a signal waveform (in practice it appears that as a broken line graph). After sampling out several signal waveform, arrange (filtered noise signal, alignment coincide) and become the representative waveform of a tool degree of discrimination. The method of comparison is in that to utilize the correlation technique of signal processing (signalprocessing), calculates the signal source and the similarity degree representing waveform that are intended to comparison. It is noted that because of in actual environment signal excessively mixed and disorderly, seem randomly generate and have no way of being organized into one and represent waveform; But, even if at two virtual locations that can detect identical signal source (AP), still have difference in intensity (as: a virtual location is probably at-40dBm, and another virtual location is at-60dBm). Therefore, via the signal intensity meansigma methods (mean) collected in a period of time and variance (variance), this position can be considered as and can detect the signal intensity profile of certain signal source; Afterwards, further according to this meansigma methods and variance after adjustment, it is provided that ownership function (membershipfunction); The signal source of comparison and the similarity degree of this signal source it was intended to later to calculate.
Otherwise, when judging to find from information bank similar environmental characteristic (step S304's is no), represent that this environment is new position, then processing unit 120 just then asks whether to need the waveform correlation feature (step S310) to information bank of record circumstances not known, if, then re-use the wave character that the Learning Identification program of Fig. 2 finds out several steady change of this environment again, as the environmental characteristic of this environment and record in information bank (step S312). Otherwise just terminate environment identification program. In one embodiment, when search result represents that environmental characteristic information is dissimilar with the signal waveform feature of the first signal identification information or differs, processing unit 120 can increase this indoor environment newly and be one second virtual location and the corresponding environmental characteristic information that the first signal identification information of the first signal sources multiple in indoor environment is set to the second virtual location and store to information bank, uses for subsequent environments identification program.
Therefore, indoor orientation method and relevant electronic installation thereof according to the present invention can collect the characteristic information that each group of signal source of each virtual location changes according to the time, find out the signal waveform feature of several recognizable steady change in each virtual location, signal characteristic as each virtual location, can without considering the distribution of whole interior space size and sampling, thereby set up the signal characteristic information bank of diverse location and comparison is provided, to carry out the identification in space residing for user, and then the corresponding service being suitable for this environment is provided, and may further be the environment residing for user and stick the label that individual is exclusive, effectively eliminate the doubt in the right of privacy.
The method of the present invention, or specific modality or its part, it is possible to exist with the form of program code. Program code can be contained in tangible media, storage media such as floppy disk, CD, hard disk or any other machine-readable (such as readable in computer), also or be not limited to the computer program product of external form, wherein, when program code is by machine, when being loaded into such as computer and perform, this machine becomes to participate in assembly of the invention. Program code transmits media also by some, and as electric wire or cable, optical fiber or any transmission form transmit, wherein, when program code is by machine, when receiving such as computer, be loaded into and perform, this machine becomes to participate in assembly of the invention. When implementing at general service processing unit, program code provides an operation to be similar to the unique apparatus of application particular logic circuit in conjunction with processing unit.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention, and any art includes usual skill, without departing from the spirit and scope of the present invention, when doing a little change and retouching. For example, system described in the embodiment of the present invention and method can hardware, software or hardware and software the physical embodiment of combination realized. Therefore protection scope of the present invention is as the criterion with the record of claims.
Claims (17)
1. being applicable to an indoor orientation method for electronic installation, in order to an indoor environment at this electronic installation place of identification, the method comprises the following steps:
Setting up an information bank, wherein this information bank includes the environmental characteristic information of at least one virtual location and correspondence thereof, and this environmental characteristic information includes the signal waveform feature of at least one tool identification corresponding to this virtual location;
Detecting the signal intensity of plural number first signal source of this indoor environment, obtain this plural number the first signal identification information corresponding to the first signal source, wherein this first signal identification information represents the signal waveform feature that the signal of this first signal source changes according to the time;
According to this first signal identification information, search this information bank, obtain a search result; And
When this search result represents the signal waveform feature similarity of this environmental characteristic information and this first signal identification information or is identical, it is determined that this indoor environment at this electronic installation place is this virtual location.
2. the method for claim 1, it is characterised in that the step setting up this information bank also includes:
Detect the signal intensity at least one secondary signal source of this virtual location, obtain at least one signal waveform;
According to respectively this at least one signal waveform, calculate an average signal waveform; And
This average signal waveform is set to this environmental characteristic information corresponding to this secondary signal source and stores to this information bank.
3. method as claimed in claim 2, it is characterised in that also include:
Obtaining after this average signal waveform, this at least one signal waveform in this secondary signal source of comparison and this average signal waveform, comprehensively draw an error change value; And
According to this error change value, respectively this secondary signal source of this virtual location is ranked up.
4. the method for claim 1, it is characterised in that also include:
When producing to change in a large number in detect this virtual location one at least one secondary signal source, re-executing a Learning Identification program, the signal waveform feature obtaining at least one tool identification this environmental characteristic information that the signal waveform feature of this at least one tool identification is set to this virtual environment corresponding increase newly to this information bank.
5. the method for claim 1, it is characterised in that also include:
When this search result represents that this environmental characteristic information is dissimilar with the signal waveform feature of this first signal identification information or differs, this indoor environment newly-increased is one second virtual location and this first signal identification information is set to environmental characteristic information corresponding to this second virtual location and stores to this information bank.
6. the method for claim 1, it is characterized in that, this virtual location also includes plural number secondary signal characteristic information and when such secondary signal characteristic information and such first signal identification information are all same or similar, it is determined that this indoor environment at this electronic installation place is this virtual location.
7. the method for claim 1, it is characterized in that, this virtual location also include such secondary signal characteristic information of plural number secondary signal characteristic information and such first signal identification information and at least one given amount all same or similar time, it is determined that this indoor environment at this electronic installation place is this virtual location.
8. the method for claim 1, it is characterised in that also include:
The signal source identification code of such first signal source of comparison, obtains the virtual location that the number of sources that arrives of comparison is wherein several;
Calculate the signal difference value between such signal source that each comparison is arrived; And
Judge that this indoor environment at this electronic installation place is as this virtual location corresponding to minimum one in such signal difference value.
9. an electronic installation, including:
One storage element, stores an information bank, and wherein this information bank includes at least one virtual location and corresponding environmental characteristic information thereof, and this environmental characteristic information includes the signal waveform feature of at least one tool identification corresponding to this virtual location;
One wireless module; And
One processing unit, it is coupled to this storage element and this wireless module, in order to be detected the signal intensity of plural number first signal source of an indoor environment by this wireless module, obtain plural number the first signal identification information corresponding to such first signal source, wherein such first signal identification information represents the signal waveform feature that the signal of such first signal source changes according to the time, according to such first signal identification information, search this information bank, obtain a search result, and when this search result represents the signal waveform feature similarity of this environmental characteristic information and this first signal identification information or be identical, judge that this indoor environment is as this virtual location.
10. electronic installation as claimed in claim 9, it is characterized in that, this processing unit also detects the signal intensity at least one secondary signal source of this virtual location, obtain at least one signal waveform, according to respectively this at least one signal waveform, calculate an average signal waveform, and this average signal waveform is set to this environmental characteristic information corresponding to this secondary signal source and stores to this information bank.
11. electronic installation as claimed in claim 10, it is characterized in that, this processing unit is also after obtaining this average signal waveform, this at least one signal waveform in this secondary signal source of comparison and this average signal waveform, comprehensively draw an error change value, and according to this error change value, respectively this secondary signal source of this virtual location is ranked up.
12. electronic installation as claimed in claim 9, it is characterized in that, when this processing unit also produces to change in a large number in detect this virtual location one at least one secondary signal source, re-executing a Learning Identification program, the signal waveform feature obtaining at least one tool identification this environmental characteristic information that the signal waveform feature of this at least one tool identification is set to this virtual location corresponding increase newly to this information bank.
13. electronic installation as claimed in claim 9, it is characterized in that, when this search result represents that this environmental characteristic information is dissimilar with the signal waveform feature of this first signal identification information or differs, it is that one second virtual location and this correspondence environmental characteristic information that this first signal identification information is set to this second virtual location storage are to this information bank that this processing unit increases this indoor environment newly.
14. electronic installation as claimed in claim 9, it is characterized in that, this virtual location also includes plural number secondary signal characteristic information and when such secondary signal characteristic information and such first signal identification information are all same or similar, and this processing unit judges that this indoor environment at this electronic installation place is as this virtual location.
15. electronic installation as claimed in claim 9, it is characterized in that, this virtual location also includes plural number secondary signal characteristic information and when the wave character of such first signal identification information Yu such secondary signal characteristic information of at least one given amount is all same or similar, and this processing unit judges that this indoor environment at this electronic installation place is as this virtual location.
16. electronic installation as claimed in claim 9, it is characterized in that, the signal source identification code of such first signal source of this processing unit also comparison, obtain number of sources wherein several virtual locations that comparison is arrived, calculate the signal difference value between the signal source that arrives of each comparison, and judge that this indoor environment at this electronic installation place is as this virtual location corresponding to minimum one in this signal difference value.
17. electronic installation as claimed in claim 9, it is characterized in that, this processing unit more collects signal intensity meansigma methods and the variance of this first signal source in a period of time, obtain the signal intensity profile of this first signal source, and according to this meansigma methods and variance after adjustment, there is provided an ownership function, to calculate the similarity degree of each signal source and this first signal source being intended to comparison.
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| CN201410620953.8A CN105636196A (en) | 2014-11-06 | 2014-11-06 | Indoor positioning method suitable for electronic device and electronic device |
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