CN102779469A - Portable navigator and navigation method - Google Patents

Portable navigator and navigation method Download PDF

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Publication number
CN102779469A
CN102779469A CN2011101192471A CN201110119247A CN102779469A CN 102779469 A CN102779469 A CN 102779469A CN 2011101192471 A CN2011101192471 A CN 2011101192471A CN 201110119247 A CN201110119247 A CN 201110119247A CN 102779469 A CN102779469 A CN 102779469A
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CN
China
Prior art keywords
module
guide
excitation signal
portable navigator
information
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011101192471A
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Chinese (zh)
Inventor
万宏宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING AILANG HI-TECH DIGITAL TECHNOLOGY CO LTD
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BEIJING AILANG HI-TECH DIGITAL TECHNOLOGY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING AILANG HI-TECH DIGITAL TECHNOLOGY CO LTD filed Critical BEIJING AILANG HI-TECH DIGITAL TECHNOLOGY CO LTD
Priority to CN2011101192471A priority Critical patent/CN102779469A/en
Publication of CN102779469A publication Critical patent/CN102779469A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a portable navigator, comprising a control unit, a signal input output module, a storage module and an excitation signal responding module, wherein the signal input output module, the storage module and the excitation signal responding module are connected with the control unit; the storage module internally stores guiding information; the excitation signal response module is used for receiving an outside excitation signal; after the excitation signal responding module receives the outside excitation signal, the control unit determines the attribute of an excitation signal, obtains corresponding guiding information from the storage unit according to the attribute of the excitation signal and controls the signal input output module to play the guiding information. Through the portable navigator disclosed by the invention, a visitor can automatically acquire speech guiding information relative to scenic spots, at which the visitor is located, without manually operating the portable navigator so that the portable navigator is convenient and quick to use.

Description

A kind of portable navigator and guide method thereof
[technical field]
The present invention relates to the electronic guide apparatus field, relate in particular to a kind of portable navigator and guide method thereof.
[background technology]
Present stage, the guide service of adopting at each scenic spot mainly contains following dual mode:
One, manual guide roam all around the would formula.It leads visitor's specific aim to explain orally important historical relic or sight spot by the guide; Its advantage is promptly answered for can promptly asking; But the visitor who participates in must follow the guide at any time; Limited visitor's freedom, and at place, the narrow sight spot of road, in the time of guide interpreting, will certainly cause surrounding and watching of visitor and hinder the normal current of road.If the guide utilizes loudspeaker to rise one after another, also can cause the more sense of hearing to pollute.Guide's number is limited simultaneously, and cultivate professional guide interpreting personnel need spend a large amount of occurrences in human life expenses in addition, and especially for the various scenic spot of FIT's quantity that multi-lingual guide to visitors requirement is arranged, the guide interpreting pattern can not better meet these demands.
Two, carry the mode of hand-held guide to visitors equipment.The user needs the manual sight spot numbering of in hand-held guide to visitors equipment, importing, hand-held guide to visitors equipment newspaper related voice information.But this mode needs the visitor to know position, present residing sight spot, yet the visitor does not often know oneself position, sight spot, place or be difficult to the very first time to know scenic spot numbering.Complex operation reduces user's operation wish.
[summary of the invention]
The present invention provides a kind of portable navigator and guide method thereof; It is through the guide to visitors information at the corresponding sight spot of the automatic broadcast of exciting of less radio-frequency; Do not having can accurately to play the language message at corresponding sight spot under the situation of manual operation yet; And the user can select the reading mode to obtain the mode of guide to visitors information, and use-pattern is simple, convenient.
For solving the problems of the technologies described above, the present invention realizes through following technical scheme:
A kind of portable navigator, it comprises control module, and the signal input/output module, memory module, the excitation signal respond module that are connected with control module respectively; Described memory module internal memory contains guide to visitors information; Described excitation signal respond module is used to receive extraneous excitation signal;
Described excitation signal respond module is after receiving extraneous excitation signal; Described control module is confirmed this excitation signal attribute; And in said storage unit, obtain the guide to visitors information corresponding with it according to this excitation signal attribute, control described signal input/output module this guide to visitors information is played out.
This portable navigator also comprises the optical module that is connected with described control module, and this optical module is used to obtain extraneous image index information, and this image index information is decoded;
After described optical module receives extraneous image index information; This image index information decoding is obtained coded message; Said control module obtains the guide to visitors information corresponding with this coded message according to this coded message in described memory module, and plays out through described signal input/output module.
This portable navigator also comprises the service switching key that is connected with described control module, is used for opening or closing described excitation signal respond module and/or described optical module.
Also have the cascade data table in the described memory module, this cascade data table is used to represent the priority level of said different extraneous excitation signal attribute.
This portable navigator also comprises the threshold setting module that is connected with described control module, and it is used to regulate the response distance of this portable navigator to described extraneous excitation signal.
This portable navigator comprises that also the cluster guide who is connected with described control module is provided with module, is used to provide cluster single worker's call function of conducting a sightseeing tour.
Described cluster guide is provided with module and comprises that also the guide rolls into a ball prompting module, is used for distance and shelter situation between certain frequency monitoring visitor and the guide.
This portable navigator also comprises the wireless guide to visitors licensing scheme that is connected with described control module, is used to set the wireless guide to visitors activation number of times of this portable navigator.
Guide to visitors information in the said memory module is the guide to visitors information of multiple different language pattern, and described control module also is connected with the language handover module that is used to select corresponding language guide to visitors pattern.
This portable navigator also comprises the recording module that is connected with described control module, is used to obtain visitor's message or feedback information, and it is stored in the described memory module.
The present invention can also realize in the following manner:
A kind of guide method of portable navigator, this method comprises:
Unlatching is also carried out status checking and initialization;
After the initialization, select the default language play mode automatically;
Get into detected state, detect whether receive excitation signal;
If receive excitation signal, then judge this excitation signal attribute, and obtain the guide to visitors information corresponding, and this guide to visitors information is played out with it according to the excitation signal attribute;
If do not receive excitation signal, then continue to wait for, be in the response interruption status.
Said portable navigator also comprises optical module; After it gets into detected state; Whether the detection optical module receives image index information; If, then become behind the electric signal decoding obtaining corresponding coding information this image index information translation, read the guide to visitors information corresponding in the memory module and with its broadcast with this coded message; If not image index information, then judged whether to receive excitation signal.
Include the cascade data table in the said storage unit,, then judged whether a plurality of excitation signals if this portable navigator receives excitation signal; If receive a plurality of excitation signals; Then confirm the attribute of each excitation signal,, determine the highest excitation signal of priority level according to the priority level of each excitation signal in the said cascade data table; And obtain the guide to visitors information corresponding in the memory module and with its broadcast with this excitation signal attribute; If only receive an excitation signal, then directly in said memory module, obtain the guide to visitors information corresponding with this excitation signal attribute, and with its broadcast.
Portable navigator of the present invention has following advantage:
The visitor can select the mode of wireless automatic guide to visitors through portable navigator of the present invention; Wireless manual operation; Can obtain and the corresponding sight spot information in visitor sight spot of living in, easy to use, quick, particularly for the special visitor of some demands; For example old man or child need not loaded down with trivial details operation; The visitor also can select to obtain guide to visitors information through the mode of reading guide volume; Particularly after the visitor leaves the scenic spot; Even perhaps can be through not clicking on guide's volume corresponding sight spot to know this sight spot information, for cultural spreading provides convenience, valid approach the visitor at this scenic spot yet.The visitor can carry portable navigator of the present invention whenever and wherever possible and guide's volume is known guide to visitors information; And on guide volume, be provided with the image of representing different language and be used for switch languages; The user can utilize the mode select target language play mode of reading, and is directly perceived more, reliable.
[description of drawings]
Fig. 1 is the wireless guide system synoptic diagram that portable navigator of the present invention and wireless launcher are formed.
Fig. 2 is the system schematic that portable navigator of the present invention, wireless launcher and server are formed.
Fig. 3 is the structured flowchart of wireless launcher of the present invention.
Fig. 4 is the structured flowchart of portable navigator of the present invention.
Fig. 5 is the workflow diagram of portable navigator of the present invention.
Fig. 6 is the user mode synoptic diagram of wireless launcher of the present invention, portable navigator and guide's volume.
[embodiment]
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention,,, specify as follows embodiment, architectural feature and the effect thereof of a kind of portable navigator of the present invention and guide method thereof below in conjunction with accompanying drawing and embodiment.
Wireless guide system synoptic diagram as shown in Figure 1, as to be formed for portable navigator 2 of the present invention and wireless launcher 1.On the different sight spots at scenic spot, be separately installed with wireless launcher 1, the attribute that each wireless launcher 1 is had is different.Wireless launcher 1 sends excitation signal at a certain time interval towards periphery; After in the radiation scope of portable navigator 2 entering wireless launcher 1 excitation signals that send that the visitor carries; Portable navigator 2 just is activated; Automatically get into the speech guide pattern, and obtain corresponding guide to visitors information according to the attribute of wireless launcher 1 and play.The radiation scope of wireless launcher 1 can be modulated.Distance bound definite value through portable navigator 2 internal databases are set can realize the respective to the excitation signal of wireless launcher.
The attribute of described wireless launcher 1 comprises signal frequency range value, IP address, signal strength values wherein any one, perhaps triangular combination in any.For example the attribute of wireless launcher is a signal frequency range value; The frequency range of the excitation signal that each wireless launcher sent is different; Portable navigator 1 is through confirming excitation signal place frequency range; Distinguish wireless launcher, and then search the guide to visitors information corresponding within it with this signal frequency range value.If the residing frequency range of the excitation signal of wireless launcher is identical, also can comprise corresponding IP address so in the attribute of wireless launcher, portable navigator 2 obtains corresponding guide to visitors information through the IP address in the excitation signal of confirming to receive.
Wireless guide system synoptic diagram as shown in Figure 2, as to be formed for portable navigator of the present invention 2, wireless launcher 1 and server 3.Through in wireless guide system, increasing server 3; So that the guide to visitors data are safeguarded and are upgraded, connect through the networking lastest imformation in time is sent to portable navigator 2, can obtain visitor's real-time touring line figure simultaneously; Understand visitor's hobby, with further sophisticated systems layout.
Below will introduce the concrete structure and the function of portable navigator 2 and wireless launcher 1 in the wireless guide system of the present invention in detail.
As shown in Figure 3, be the structured flowchart of wireless launcher 1 of the present invention, this wireless launcher comprises:
Main control module 10: be the main control chip of this wireless launcher, control transmission, and read the wireless launcher attribute information and send the related command of coordination execution simultaneously to excitation signal.
Nonvolatile memory 13: store the attribute information and its operating software data of corresponding wireless launcher, to distinguish different wireless launchers.
Excitation signal transmitter module 14: be the passage that said wireless launcher 1 is communicated by letter with portable navigator, send excitation signal at a certain time interval and give portable navigator, comprise the attribute information of wireless launcher in this excitation signal.In the present invention, said wireless launcher meets the local area radio location and the communication network of ZigBee agreement, and launches the excitation signal of 2.4G frequency range at interval with certain hour.Adopt the ZigBee agreement on the free common band of the 2.4G basis among the present invention; It is low in energy consumption; Do not disturb mutually with communications protocol such as WiFi, WAP, GSM, bluetooth, 3G, and the wireless telecommunications of 2.4G can penetrate wall and building to a certain extent, when multilayer wall block signal decays; ZigBee can confirm concrete position, scenic spot under the cooperation of signal intensity.
Excite distance that module 12 is set: according to the distance between each sight spot in the scenic spot,, to excite the level threshold values, realize the control that excites distance to wireless launcher through exciting apart from be provided with module 12 to adjust to avoid the overlapping of radiation areas as far as possible.
Supply module 11: it is a solar cell in the present invention, has saved power cable, makes that the installation site of wireless launcher is more flexible, for the work of this wireless launcher provides electric energy.Certainly, in the place nearer, also can adopt commercial power supply from the urban district.
Described main control module 10 is connected respectively with described exciting apart from module 12, nonvolatile memory 13 and excitation signal transmitter module 14 are set.
As shown in Figure 4, be the structured flowchart of portable navigator 2 of the present invention.This portable navigator 2 comprises:
Control module 20: be the main control chip of this portable navigator, carry out analyzing and processing to the received signal, carry out command adapted thereto.
Memory module 21: store the operating software of guide to visitors information, cascade data table and portable guide device, wherein said tour guide information comprise to the recommended information at sight spot and preset prompting visitor track route and around the relevant information of service facility; Described cascade data table is a preset guide to visitors route; This guide to visitors route is the track route according to most visitor; The attribute information that is installed in the wireless launcher of locating along the corresponding sight spot of this track route is arranged successively, and when the visitor was in the excitation information overlapping region, control module 20 will be with reference to this cascade data table; Accept attribute information and be in exciting of the not high wireless launcher of cascade data table medium priority, and play and the corresponding guide to visitors information of this attribute information.
Threshold setting module 22: it has the threshold value of different pieces of information; Through threshold setting module 22; Can design the response distance of 2 pairs of wireless launcher 1 radiation scopes of this portable navigator, the visitor can be provided with threshold value according to self-demand, the size of governing response distance.
Excitation signal respond module 23: the communication of completion and wireless launcher 1 under the control of control module 20 sends to control module 20 with the excitation signal that receives, to carry out corresponding response actions.
The cluster guide is provided with module 24: it provides cluster single worker's call function of conducting a sightseeing tour for this portable navigator; For the special tourist party of demand; The visitor can select self-service guide to visitors; Also can adopt cluster guide to visitors mode, obtain guide's some special explanations and the arrangement of tourism time-histories through conduct a sightseeing tour single worker's call function of cluster, for the visitor provides more comprehensively service.Be provided with in this cluster guide and comprise also in the module 24 that the guide rolls into a ball prompting module (not shown); After the user had selected cluster guide mode, the guide rolled into a ball prompting module and opens automatically, with distance and the shelter situation between certain frequency monitoring visitor and the guide; For example; When the distance of visitor between conducting a sightseeing tour perhaps seriously blocked by buildings above 50 meters, portable navigator 2 can carry out voice suggestion, reminds the visitor in time to catch up with guide troop.
Language handover module 25: be used to select the language play mode of guide to visitors information, can provide the multilingual play mode to supply the user to select, for example foreign language or dialect.The user can adopt button to select, and also can adopt the mode of clicking coding guide's volume 4 (as shown in Figure 6) to select to switch.
Optical module 26: be used to read the image index that is printed in advance on the said coding guide volume; And this image index information decoded obtain corresponding codes information; And this coded message sent to control module 20; Control module 20 obtains corresponding guide to visitors information according to this coded message in memory module 21, with its broadcast.In the present invention; As shown in Figure 6; Be printed with scenic spot figure and language switching sign on the described coding guide volume; And switch the pictures different index that the sign place is printed with the difficult identification of human eye at this scenic spot figure and language, the user obtains corresponding image index through using portable navigator 2 to click the target sight spots, plays the language message corresponding with this sight spot.The use of this mode is not limited only in the scenic spot the understanding of each sight spot information, and the visitor can obtain the voice messaging at target sight spot whenever and wherever possible, has increased the dirigibility of visitor's stroke, can satisfy different visitors' demand.Said guide volume is gone up printed pictures different index principle has detailed introduction in application number is 02122633.4 and 200420067103.1 one Chinese patent application, be not described in detail in this.
Recording module 27: conveniently to obtain visitor's message and feedback opinion.
Wireless guide to visitors licensing scheme 29: be used for the setting wireless guide to visitors and activate number of times, real visitor can be gone sight-seeing easily, with convenient effective management to whole guide system.
Signal input/output module 28: can manually-operated be provided for the user, for example voice selecting, volume control, broadcast/cancellation, and microphone, loudspeaker, earphone interface, USB interface etc.
Power supply 201: for whole portable navigator provides electric energy, can be chargeable lithium cell, perhaps/and solar cell.
During practical implementation, also can on portable navigator of the present invention, increase display module, for the visitor shows current broadcast information, simultaneously with the best tourism route of visual way prompting visitor.
In the present invention; It is the wireless transmission chip that the excitation signal transmitter module 14 of said wireless launcher 1 and the excitation signal respond module of described portable navigator 2 all adopt the ZigBee chip on the 2.4G basis; Certainly in the scenic spot less at the scenic spot area, that sight spot density is bigger, also can adopt wireless communication modules such as infrared, RFID.
As shown in Figure 5, be the guide method process flow diagram of portable navigator of the present invention, below will introduce the guide method of portable navigator of the present invention in detail:
Portable guide device carries out status checking and initialization after starting;
After the initialization, select the default language play mode automatically, this moment, the visitor can select language according to self-demand;
After the selected broadcast language mode; Automatically get into detected state; Whether the detection optical module receives image index information; If, then become behind the electric signal decoding obtaining corresponding coding information this image index information translation, read the guide to visitors information corresponding in the memory module and with its broadcast with this coded message; If not coded message, then judged whether to receive excitation signal, if; Then judged whether a plurality of excitation signals, promptly whether be in overlapping region (as shown in Figure 1) D, E, F, G, if receive a plurality of excitation signals; Then confirm the attribute of each excitation signal; According to the priority level of each excitation signal in the cascade data table, determine the highest excitation signal of priority level, and in memory module, obtain the guide to visitors information corresponding with this excitation signal attribute; If the excitation signal that receives is one; Promptly be in Non-overlapping Domain (as shown in Figure 1) A, B, C, then directly in memory module, obtain the guide to visitors information corresponding, and play with this excitation signal attribute; If do not receive excitation signal, then continue to wait for, be in the response interruption status.
Can also be provided for switching the service switching key (not shown) that guide to visitors information derives pattern on the portable navigator of the present invention; After portable navigator initialization; The visitor can serve the mode that switching key is selected wireless automatic guide to visitors through this; Perhaps select to obtain guide to visitors information, for different tourist demands different methods of service is provided like this, particularly after the visitor leaves the scenic spot through the mode of reading guide volume; Even perhaps can not know sight spot information, for cultural spreading provides convenience, valid approach the visitor at this scenic spot yet.And on guide's volume, be provided with the national flag image of representing different language, the user can utilize the mode select target language play mode of reading, and is directly perceived more, convenient.
Below only embodiments of the invention are described, but be not, according to spiritual various variations or the modification of being made of the present invention, all within the protection category of claim of the present invention in order to restriction the present invention.

Claims (13)

1. portable navigator, it is characterized in that: this portable navigator comprises control module, and the signal input/output module, memory module, the excitation signal respond module that are connected with control module respectively; Described memory module internal memory contains guide to visitors information; Described excitation signal respond module is used to receive extraneous excitation signal;
Described excitation signal respond module is after receiving extraneous excitation signal; Described control module is confirmed this excitation signal attribute; And in said storage unit, obtain the guide to visitors information corresponding with it according to this excitation signal attribute, control described signal input/output module this guide to visitors information is played out.
2. portable navigator as claimed in claim 1; It is characterized in that: this portable navigator also comprises the optical module that is connected with described control module; This optical module is used to obtain extraneous image index information, and this image index information is decoded;
After described optical module receives extraneous image index information; This image index information decoding is obtained coded message; Said control module obtains the guide to visitors information corresponding with this coded message according to this coded message in described memory module, and plays out through described signal input/output module.
3. portable navigator as claimed in claim 2 is characterized in that: this portable navigator also comprises the service switching key that is connected with described control module, is used for opening or closing described excitation signal respond module and/or described optical module.
4. portable navigator as claimed in claim 1 is characterized in that: also have the cascade data table in the described memory module, this cascade data table is used to represent the priority level of said different extraneous excitation signal attribute.
5. portable navigator as claimed in claim 1 is characterized in that: this portable navigator also comprises the threshold setting module that is connected with described control module, and it is used to regulate the response distance of this portable navigator to described extraneous excitation signal.
6. portable navigator as claimed in claim 1 is characterized in that: this portable navigator comprises that also the cluster guide who is connected with described control module is provided with module, is used to provide cluster single worker's call function of conducting a sightseeing tour.
7. portable navigator as claimed in claim 6 is characterized in that: described cluster guide is provided with module and comprises that also the guide rolls into a ball prompting module, is used for distance and shelter situation between certain frequency monitoring visitor and the guide.
8. portable navigator as claimed in claim 1 is characterized in that: this portable navigator also comprises the wireless guide to visitors licensing scheme that is connected with described control module, is used to set the wireless guide to visitors activation number of times of this portable navigator.
9. portable navigator as claimed in claim 1 is characterized in that: the guide to visitors information in the said memory module is the guide to visitors information of multiple different language pattern, and described control module also is connected with the language handover module that is used to select corresponding language guide to visitors pattern.
10. portable navigator as claimed in claim 1 is characterized in that: this portable navigator also comprises the recording module that is connected with described control module, is used to obtain visitor's message or feedback information, and it is stored in the described memory module.
11. the guide method of a portable navigator as claimed in claim 1 is characterized in that this method comprises:
Unlatching is also carried out status checking and initialization;
After the initialization, select the default language play mode automatically;
Get into detected state, detect whether receive excitation signal;
If receive excitation signal, then judge this excitation signal attribute, and obtain the guide to visitors information corresponding, and this guide to visitors information is played out with it according to the excitation signal attribute;
If do not receive excitation signal, then continue to wait for, be in the response interruption status.
12. the guide method of portable navigator as claimed in claim 11; It is characterized in that: said portable navigator also comprises optical module; After it got into detected state, whether the detection optical module received image index information, if; Then become behind the electric signal decoding obtaining corresponding coding information this image index information translation, read the guide to visitors information corresponding in the memory module and its broadcast with this coded message; If not image index information, then judged whether to receive excitation signal.
13. the guide method of portable navigator as claimed in claim 12; It is characterized in that: include the cascade data table in the said storage unit,, then judged whether a plurality of excitation signals if this portable navigator receives excitation signal; If receive a plurality of excitation signals; Then confirm the attribute of each excitation signal,, determine the highest excitation signal of priority level according to the priority level of each excitation signal in the said cascade data table; And obtain the guide to visitors information corresponding in the memory module and with its broadcast with this excitation signal attribute; If only receive an excitation signal, then directly in said memory module, obtain the guide to visitors information corresponding with this excitation signal attribute, and with its broadcast.
CN2011101192471A 2011-05-10 2011-05-10 Portable navigator and navigation method Pending CN102779469A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103401718A (en) * 2013-08-08 2013-11-20 天津恒达文博科技有限公司 Method and device for wireless setting of equipment
CN104168035A (en) * 2013-05-15 2014-11-26 Gn瑞声达A/S Hearing device and a method for receiving wireless audio streaming
CN104616222A (en) * 2015-01-23 2015-05-13 深圳市元征科技股份有限公司 Wireless tour guide headphones, transmitter and system
CN108769911A (en) * 2018-06-15 2018-11-06 东华大学 A kind of device conducted a sightseeing tour and communicated between tourist
CN109326237A (en) * 2018-09-30 2019-02-12 广西田东泰如鲜品农副产品配送有限公司 A kind of guide system of mango villa garden
CN110491315A (en) * 2019-07-31 2019-11-22 安徽正风建设工程有限公司 A kind of science and technology museum intelligence guide system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104168035A (en) * 2013-05-15 2014-11-26 Gn瑞声达A/S Hearing device and a method for receiving wireless audio streaming
US9826320B2 (en) 2013-05-15 2017-11-21 Gn Hearing A/S Hearing device and a method for receiving wireless audio streaming
CN103401718A (en) * 2013-08-08 2013-11-20 天津恒达文博科技有限公司 Method and device for wireless setting of equipment
CN104616222A (en) * 2015-01-23 2015-05-13 深圳市元征科技股份有限公司 Wireless tour guide headphones, transmitter and system
CN108769911A (en) * 2018-06-15 2018-11-06 东华大学 A kind of device conducted a sightseeing tour and communicated between tourist
CN109326237A (en) * 2018-09-30 2019-02-12 广西田东泰如鲜品农副产品配送有限公司 A kind of guide system of mango villa garden
CN110491315A (en) * 2019-07-31 2019-11-22 安徽正风建设工程有限公司 A kind of science and technology museum intelligence guide system

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Application publication date: 20121114