CN101247170B - Interactive wireless electric tour guide system and method - Google Patents

Interactive wireless electric tour guide system and method Download PDF

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Publication number
CN101247170B
CN101247170B CN2007101646497A CN200710164649A CN101247170B CN 101247170 B CN101247170 B CN 101247170B CN 2007101646497 A CN2007101646497 A CN 2007101646497A CN 200710164649 A CN200710164649 A CN 200710164649A CN 101247170 B CN101247170 B CN 101247170B
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radio
information
channel
frequency module
tour guide
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CN101247170A (en
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金文光
吴振荣
胡锴亮
张慧芳
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The present invention provides a interactive wireless electric guide system, which includes emitting set and portable receiver, emitting set includes master controller MCU and guide information memory connecting with it, first radio frequency module; portable receiver includes digital signal processor, random memorizer, nonvolatile store, second radio frequency module, programmable logic device and playback module, the first radio frequency module controlled by main controller, second radio frequency module controlled by digital signal processor according to communication protocols automatic switchover frequency channel, so communication interactive is completed. The present invention has the advantage of low cost, easy to update system maintenance and guide information, realizing automatic recognition sight by user end, taking photo at any time, standard, personalized and intelligentize of tour serves are realized.

Description

Interactive type wireless electronics guide system and guidance method
Technical field
The present invention relates to a kind of electronic guide device and guidance method, belong to wireless interactive electronic guide manufacturing field of equipment based on wireless communication technology, voice signal encoding and decoding technique, digital signal processor embedded system technology.
Background technology
In recent years, development along with the internationalization of tourist service, electronization, intellectuality, networking, many tourist attractions have begun to introduce the electronic guide technology, the pattern that wherein comparatively advanced electronic guide device adopts transmitting set to combine with portable receiver basically mainly contains following dual mode with regard to the transmission of signal and control:
A kind of is to adopt the local voice storage mode, as publication number is CN101018062 " intelligent guider interpretation system and method for work thereof ", and publication number is " the intelligent electronic guide device " of CN2496193Y and " electronic automatic interpretation system that is used for tourist attraction and exhibition " that publication number is CN101026380.All sight spot explanation contents of this tour guide device all are stored in the receiver, the transmitter that is installed on the sight spot just utilizes the infrared wireless communications method that waits to send code signal to receiver, and receiver selects to play corresponding explanation content according to the coded message that receives.Mainly there is tripartite planar defect in this technology: 1) whole explanation contents leave in the receiver, need jumbo non-volatile memory chip, have increased the cost of receiver, in addition, if change the explanation content, just must write again each receiver, very inconvenient; 2) adopt technology of infrared transmission, distance is short, directivity is arranged, and blocked by other visitors easily and make receiver correctly to receive, if use the accurate location of GPS then to increase the cost of receiver; 3) the employing infrared technique can not realize the interactive function between the transmitter and receiver, if airmanships such as employing GPRS then can produce extra GPRS information charge and use.
Another kind is the mode that adopts wireless transmission explanation content.As publication number is CN1694363 " a kind of guide's communication device and the means of communication thereof ", adopts the nRF905 chip as the voice transfer chip; " exact position electronic guide terminal installation and the electronic guide method " of publication number CN1913403 adopts FM frequency modulation modulator approach transmission of speech signals.These two kinds of systems all are with a visit Design Pattern at the guide, are explained by the hand-held emitter of guide, and the visitor carries receiver and listens to, and its greatest problem is: 1) can not provide multilingual guide interpreting simultaneously; 2) can not guarantee that each visitor starts anew to listen to explanation; 3) do not consider the individual traveler travel at one's own expense; 4) service quality still conducted a sightseeing tour individual influence.
Summary of the invention
For overcoming existing technical deficiency of electronic guide and defective, the object of the present invention is to provide a kind of interactive type wireless electronics guide system, it can realize the transmission and the Interactive control of voice messaging, avoid storing a large amount of tour guide informations, make that system cost reduction, system maintenance and updating tour guide information are simple at receiver; The portable receiver of user side can realize discerning automatically the sight spot, with to listening, from the beginning the visitor who arrives successively all can be listened to, be independent of each other, embodied standardization, personalization, the intellectuality of tourist service.
For this reason, the present invention adopts following technical scheme to solve above technical problem:
A kind of interactive type wireless electronics guide system, comprise emitter and at least one portable receiver, emitter comprises main controller MCU and the tour guide information memory, first radio-frequency module that are attached thereto, portable receiver comprises digital signal processor, random asccess memory, nonvolatile storage, second radio-frequency module, programmable logic device and playback module, wherein:
Tour guide information is stored in the tour guide information memory, and described tour guide information adopts SPEEX speech coding algorithm coding; Be provided with in first radio-frequency module and be used to receive or control channel that sends control information and the information channel that is used to send tour guide information; Main controller MCU reads out tour guide information from the tour guide information memory, launch by first radio-frequency module again;
Digital signal processor is connected with second radio-frequency module by spi bus, is provided with in second radio-frequency module to be used to send or the control channel of receiving control information and be used to receive the information channel of tour guide information; The tour guide information that receives adopts the SPEEX decoder decode, after decoded voice are changed by programmable logic device, through playback module output guide voice messaging;
Described first radio-frequency module according to the communication protocol automatically switching channels, is finished communication interaction under main controller MCU control, under the control of second radio-frequency module at digital signal processor.
Described first radio-frequency module and second radio-frequency module adopt the ZIGBEE radio frequency chip, described communication interaction is based on ZIGBEE communication protocol, finish by time division multiplexing mode, control channel communication protocol and information channel communication protocol are encapsulated in the ZIGBEE SMAC agreement.
Described ZIGBEE radio frequency chip is provided with #0~#15 totally 16 channels, and control channel uses the #0 channel, and information channel uses #1~#15 channel.Further, first radio-frequency module is made up of a plurality of radio frequency units, by main controller MCU radio frequency unit is carried out channel allocation, and each radio frequency unit independently uses a certain channel, does not disturb mutually.
Also be provided with the data download interface in the described emitter, be provided with battery and battery charge interface in the portable receiver.
Another object of the present invention provides a kind of guidance method of interactive type wireless electronics guide system, and this method comprises the steps:
A. initialization: start aforesaid dispensing device and portable receiver, prepare after the initialization to use;
B. connect between dispensing device and the portable receiver: the b1. dispensing device just can receive control information by the control channel fixed time broadcast control information of first radio-frequency module in case portable receiver enters the radio transmission range of sight spot emitter; B2. receiver receives control information, and according to this control information self working state is set, and automatically switches to corresponding information channel channel;
C. the transmission of tour guide information: the information channel that emitter sends by first radio-frequency module sends tour guide information;
D. the reception of tour guide information: receiver receives tour guide information by the information channel of second radio-frequency module, and the decoding broadcast, and receiver is listened at a sight spot to finish and just got back to init state automatically.
In the b1 of step B, the tour guide information that does not comprise the selected language of receiver in the control information that receiver receives broadcasts advance notice, receiver then sends the control information of selected language tour guide information as replying by the control channel of second radio-frequency module 204, emitter is according to the automatic adjustment information channel of the control information of receiver, control channel by first radio-frequency module sends control information then, after receiver receives this control information, self working state is set, automatically switches to corresponding information channel channel.
On the technical solution of the present invention basis, the emitter networking at different sight spots can be become a local area network (LAN), server (as shown in Figure 2) is set in the control room, scenic spot.Each emitter statistics and to the receiver access information at this sight spot of Server Transport, thus the distribution situation of whole scenic spot visitor can be added up at server end at each sight spot, and guiding visitor tour prevents the crowding phenomenon that some sight spot may occur.The position of certain receiver also can be broadcasted and inquire about to server end, realizes the local positioning of visitor position, searches the visitor who wanders away.The security monitoring function of sight spot historical relic is provided.This expansion scheme can realize the travel statistics of data to the visitor, for the scenic spot management provides strong auxiliary.
The invention has the beneficial effects as follows:
1, the present invention need not the visitor and intervenes too much, can realize sight spot identification automatically.The visitor starts after the portable receiver, just can freely play at the scenic spot, and receiver can be monitored automatically, cooperates emitter, receives and play tour guide information.Arrive of the explanation of the wireless coverage at a sight spot from the visitor,, only need wait for 8 seconds or still less if the explanation content-length is 2 minutes to this sight spot of uppick.If explanation length is shorter, then the stand-by period is shorter.And the real concrete sight spot scenery that arrives of visitor also needs a bit of walking time, has therefore realized basically with arriving with the effect of listening.
2, the present invention has overcome the deficiency of existing similar electronic guide technology, needn't only need when upgrading explaining information the emitter at corresponding sight spot is upgraded in the prestore explaining information at all sight spots of each receiver, and is simple and convenient.Owing in emitter, adopt a plurality of transmitter units, each transmitter unit can be launched multiple programs, mutual by receiver and emitter again, realized the efficient allocation of limited communication channel, greatly shortened the required time of voice signal transmission, reached basically with arriving with the effect of listening.
3, the present invention has adopted the ZIGBEE wireless communication technology, has rational data transfer bandwidth, cooperate effective communication protocol design and low rate wideband speech coding technology SPEEX, improved the play quality of guide interpreting voice, interactive function is provided simultaneously, the system that makes also has the upwards extensibility of development, for example network savvy.
4, the present invention has adopted the ZIGBEE wireless communication technology, has overcome the employed infrared communication technique of like product apart from weak point, and traffic rate is low, and directivity requires high deficiency.50 meters left and right sides omnirange stable data transmission can be provided.
5, the present invention is based on the digital signal processor design, Digital Signal Processing function efficiently is provided, reduce redundant external circuit as far as possible, compare with the electronic guide product that uses Global Navigation System, positioning function and part interactive function can be provided equally, but reduce the complexity of system, use easily, need not the data download of getting online without being tethered to a cable simultaneously, reduced the GPRS communication cost.The present invention uses the broadband voice encoding and decoding SPEEX technology of increasing income simultaneously in addition, need not pay.On no matter still being software design, all reduced the cost of product, had the market competitiveness, can satisfy the demand of current tourist market better from hardware designs.
6, the present invention designs according to portable mobile embedded type equipment principle, product has outside map indication, and transmission and broadcast mutual, tour guide information between sight spot monitoring, transmitter and receiver are finished automatically by portable receiver and emitter, the visitor only needs to select guide's language and regulates volume, can cancel simultaneously and play or play again, use very convenient.
Description of drawings
Fig. 1 is the system schematic that emitter and portable receiver are formed;
Fig. 2 is the extended networking system schematic that emitter and portable receiver are formed;
Fig. 3 is the emitter principle schematic;
Fig. 4 is the portable receiver principle schematic;
Fig. 5 is emitter main controller MCU, tour guide information memory, LED light emitting diode lamp circuit theory diagrams;
Fig. 6 is the first radio-frequency module radio frequency unit circuit theory diagrams;
Fig. 7 is portable receiver digital signal processor, random asccess memory, non-volatile memory circuits schematic diagram;
Fig. 8 is portable receiver second radio-frequency module, antenna circuit schematic diagram;
Fig. 9 is portable receiver programmable logic device circuit theory diagrams;
Figure 10 is portable receiver playback module, earphone interface circuit schematic diagram;
Figure 11 is a portable receiver electric power management circuit schematic diagram;
Figure 12 is an emitter workflow schematic block diagram;
Figure 13 is a portable receiver workflow schematic block diagram.
Embodiment
Below, the invention will be further described with specific embodiment in conjunction with the accompanying drawings.
Interactive type wireless electronics guide system of the present invention comprises emitter and at least one portable receiver.Wherein, emitter partly comprises:
Main controller MCU 101: be the main control chip of emitter.Control is with the PC communication and store tour guide information; Control the reception and the transmission of 105 control informations of first radio-frequency module, and from tour guide information memory 102, read corresponding tour guide information and launch according to the parameter of program setting; Control LED light emitting diode lamp 104 is to show the operating state of emitter.
Tour guide information memory 102: belong to nonvolatile storage, the tour guide information at storage sight spot, described tour guide information adopt SPEEX speech coder coding, obtain the coded data of the two kinds of voice quality grades in arrowband and broadband respectively.
Power management module 103: for emitter provides power management.
First radio-frequency module 105: realize radio communication function with second radio-frequency module 204, send control information and tour guide information, and receive the control information that portable receiver sends.In the present embodiment, this radio-frequency module comprises four radio frequency units, and the control channel radio frequency unit has each No. one antenna of transmitting-receiving, and other radio frequency unit only has emission No. one antenna.
Data download interface 110: adopt the RS232 interface specification, computer can pass through this interface, under main controller MCU101 cooperation tour guide information is stored on the tour guide information memory 102.In addition, also can pass through first radio-frequency module 105, the tour guide information that the reception wireless transmission is come under main controller MCU 101 controls also stores in the tour guide information memory 102.
Shown in Fig. 5,6, main controller MCU 101 is by spi bus (MISO, MOSI, SPICLK) link to each other with tour guide information memory 102, first radio-frequency module 105, chip selection signal is wherein controlled respectively by the general input/output port of main controller MCU101, promptly 28 pin are as the chip selection signal of tour guide information memory 102, and 29,30,31,32 pin are the chip selection signal of 105 4 radio frequency units of first radio-frequency module respectively; The interrupt request singal IRQ of each radio frequency unit is connected respectively to keyboard interrupt 39,40,41,42 pin of main controller MCU 101.Main controller MCU 101 use general input/ output port 7,8,9 pin respectively as 105 4 radio frequency units of first radio-frequency module the control mouth line that resets, sends, receives.In addition, the clock signal of main controller MCU 101 is exported 15 pin by the clock of a radio frequency unit in first radio-frequency module 105 and is provided, again by general input/ output port line 23,24 foot control system LED light emitting diode lamps 104.
Portable receiver partly comprises:
Digital signal processor 201: be the main control chip of portable receiver, by data/address bus, address bus and control bus expansion random asccess memory 202; Read preset data in the Fei Yishi memory 203 by spi bus, or the tour guide information that receives of second radio-frequency module 204, and the output control information; The decoding tour guide information is also play by playback module; The monitoring button is also made corresponding function and is set.
Random asccess memory 202: the exented memory space during as digital signal processor 201 operations.
Nonvolatile storage 203: the related voice data that storage guiding visitor uses and the software data of portable receiver, when starting, receiver guides by BOOTLOADER, start the receiver running software.
Second radio-frequency module 204: finish communication function by the SPI interface under digital signal processor 201 controls, its clock signal is as the work clock of programmable logic device 207.
Antenna 205: mate second radio-frequency module 204 and finish communication function, have each cover antenna of transmitting-receiving.
Playback module 206: the digital voice data of digital signal processor 201 decodings is converted to analog signal by earphone interface 212 outputs.Its voice data transmission protocol specification I2S is produced by programmable logic device 207, and controlling and driving information is produced by digital signal processor 201 Simulation with I 2C buses.
Programmable logic device 207: receive key information and, pay key informations to digital signal processor 201 to digital signal processor 201 application interruptions; The clock signal of receiving digital signals processor 201 decoded digital voice messagings and 204 outputs of second radio-frequency module is transferred to playback module 206 according to the I2S protocol specification.
Button 208: offer user's interactive interface, in order to selection/switch languages, play/play again, the cancellation function.
Battery charge interface 209: the battery charge interface is provided.
Battery 210: but the recharge lithium battery, for portable receiver provides power supply.
Power management 211: for portable receiver provides power management.
Earphone interface 212: the output interface that audio guide information is provided.
Digital signal processor 201 is by data/address bus, address bus and control bus expansion random asccess memory 202, its memory extend out chip selection signal CS0 (29 pin), CS2 (21 pin) select the low byte of random asccess memory 202 to enable respectively (39 pin), high byte enable (40 pin).Digital signal processor 201 is connected with nonvolatile storage 203, second radio-frequency module 204 by spi bus, wherein the chip selection signal of digital signal processor 201SPI bus (12 pin) directly links to each other with nonvolatile storage 20312 pin on the one hand, link to each other with 19 pin of second radio-frequency module 204 by the anti-phase back of programmable logic device 207 on the other hand, make and have only a device to transmit data on the spi bus with digital signal processor 201.
Digital signal processor 201 uses the control mouth line of the resetting of the general input/output ports and second radio-frequency module 204, transmission, reception, state exchange to join; Interrupt request singal 19 pin of second radio-frequency module 204 are connected to the external interrupt of digital signal processor 201 and import on 20 pin.
Digital signal processor 201 is by data/address bus and programmable logic device 207 swap datas, and, be connected on 96 pin of programmable logic device 207 chip selection signal that its outer extension memory chip selection signal CS1 (30 pin) controls as 207 read-writes to programmable logic device.
The interrupt request singal that programmable logic device 20717 pin produce is connected to the external interrupt of digital signal processor 201 and imports 1 pin.15 pin clock signals of second radio-frequency module 204 are connected on its 48 pin as the clock input of programmable logic device 207.Programmable logic device 207 latchs the digital speech information of digital signal processor 201 outputs, also go here and there and change and output on 10,11,12 pin of playback module 206 by 98,99,100 pin with the I2S protocol specification. I2C bus interface 17,18 pin of playback module 206 link to each other with 13,31 pin of digital signal processor 201.Button 208 is connected on the programmable logic device 207, can use 13 buttons at most.Battery charge interface 209 is connected on the power management module 211 by a single-pole double throw formula switch, the V RF that power management 211 produces is as second radio-frequency module, 204 power supplys, VDDD is as the power supply of playback module 206, VCC is as the power supply of other chips, and VDD is as the core power of digital signal processor 201.
In the present embodiment, it is the wireless transmission chip that first radio-frequency module 105, second radio-frequency module 204 adopt 2.4GHz ZIGBEE chips, finishes communication between emitter and the portable receiver by time division multiplexing mode; Use 2.4GHz ZIGBEE technology to overcome the deficiency of infrared communication apart from weak point, high directivity, simultaneously can provide the 100-200kbps transmission bandwidth, cooperate to adopt the SPEEX speech coder coding tour guide information of increasing income, the guide interpreting of arrowband, the two kinds of voice quality grades in broadband can be provided.Based on described two technology, the guide interpreting content stores behind the coding is sent by emitter in described emitter tour guide information memory 102, and portable receiver receives the back and uses SPEEX decoder decode tour guide information.
Described first radio-frequency module 105, second radio-frequency module, 204 operating frequencies are divided into #0-#15 totally 16 channels altogether between 2.405GHz-2.480GHz.Described radio-frequency module 105 under main controller MCU101 control, described second radio-frequency module 204 according to the communication protocol automatically switching channels, finishes communication interaction at digital signal processor 201.Communication protocol comprises control channel communication protocol and information channel communication protocol.Two kinds of communication protocols all are encapsulated in the 2.4GHz ZIGBEE SMAC agreement.
The described #0 channel of the fixing use of described control channel communication, the user's message section comprises this machine numbering, the channel that is about to go on the air, the program code that is about to go on the air and languages information in the emitter transmission message; The user's message section comprises languages information and this machine numbering that itself is required in the portable receiver transmission message.In the described control channel communication, must whether communicate by letter by monitor channel before the transmission information, conflict then the random back-off wait if having.
The #1-#15 channel is used in described information channel communication, and described emitter and portable receiver use the unified information channel numbering and the mapping relations of languages information.Each channel time-sharing multiplex transmission multiple programs of described information channel.Described information channel communication message user segment comprises program control information and tour guide information data.Described information channel communication is adopted not have and is connected delivery type one-way communication as possible, is sent by emitter, and portable receiver receives.
The a certain radio frequency unit steady job of first radio-frequency module 105 is at the #0 channel, specially as described control channel communication chip, other three radio frequency units are under main controller MCU101 control, languages demand according to portable receiver, be operated in the #1-#15 channel, transmission is used as information channel.Second radio-frequency module 204 can be operated in any channel, uses the #0 channel as the control channel communication channel but also can fix.For selected languages is that the portable receiver of Chinese does not need emission control information, then must send control information by the control channel of second radio-frequency module 204 for the receiver of selecting other languages.
Two groups of tour guide information coded datas that have arrowband coding and two kinds of voice quality grades of wideband encoding in the described tour guide information memory 102, in order to guarantee that the visitor is with arriving with listening, every group coding data must be transmitted with multiple programs form time-sharing multiplex by each channel of described information channel, are reduced the blanking time that every programs broadcasts.In the present embodiment, each channel of described information channel can transmit the tour guide information of 5 cover broadband voice quality tour guide informations or 8 cover narrowband speech quality, and then first radio-frequency module 105 can transmit the tour guide information of 15 cover broadband voice quality tour guide informations or 24 cover narrowband speech quality.With 3 minutes tour description and direction speech was example, and be 12 seconds program blanking time of broadband voice quality tour guide information, and be 7.5 seconds program blanking time of narrowband speech quality tour guide information, realized that substantially the visitor is with to listening.If tour description and direction speech length is longer, can increases the channel number of information channel by the radio frequency unit number N (N≤16) that increases by first radio-frequency module 105, thereby increase the number of programs of transmission.The number of programs that described first radio-frequency module 105 can transmit is N (N≤16) times of each channel transmission number of programs, and N is the radio frequency unit number that is used for information channel communication in first radio-frequency module.Being provided with four radio frequency units with first radio-frequency module is example, one of them radio frequency unit is the control channel radio frequency unit, other three radio frequency units are used for information channel communication, and each channel transmission number of programs is 5 covers, and then the number of programs that can transmit of first radio-frequency module 105 is 15 covers.Portable receiver adopts digital signal processor 201 only to handle a required programs, finishes the SPEEX tone decoding, reduction guide voice messaging.
Power that the communication of different language tour guide information enjoys that All factors being equal, preference will be give to uses first radio-frequency module 105 to be used for the radio frequency unit of information channel transmission jointly.Under the situation that does not have other languages demands except that Chinese, the radio frequency unit that first radio-frequency module is used for the information channel transmission all is used to send Chinese broadband tour guide information.Launch the multilingual tour guide information simultaneously when needs, then send the arrowband coded voice data.Portable receiver all can be decoded to two kinds of coded datas.
Another object of the present invention has provided a kind of electronic guide method.Place an emitter at each sight spot, as the transmission and the control of this scenic spot guide information.Each emitter has the radio transmission range of oneself, just the broadcast coverage of tour guide information and receiver detection range.All portable receivers that enter this broadcasting area can both receive tour guide information control information of this emitter and concrete tour guide information, can launch the access information of this receiver simultaneously to emitter.
Figure 12 is an emitter workflow schematic diagram.After starting, emitter carries out status checkout and initialization, initialization by after begin to monitor and send Chinese and broadcast control information and tour guide information, monitor the access information of portable receiver, other languages demands have been judged whether: as English, Guangdong language, Korean tour guide information etc., if other languages demands are arranged, adjust the relevant tour guide information that first radio-frequency module is used for the radio frequency unit transmission of information channel transmission.The radio frequency unit that first radio-frequency module is used for the control channel transmission sends control information, and the situation of necessary monitor channel if there are other main frames to communicate by letter on the channel, then adopts the random back time waiting before sending, and repeats snoop procedure; If there are not other main frames to communicate by letter, then send control information at once.Read corresponding tour guide information from tour guide information memory 102, the radio frequency unit that is used for the information channel transmission by first radio-frequency module sends.
Figure 13 is a portable receiver workflow schematic diagram.The visitor carries portable receiver and plays, after portable receiver starts, carry out status checkout and initialization, after initialization is passed through, begin to guide the visitor to use: to enter the speech selection state, the prompting visitor selects the language that need to receive, and the visitor can select language by button, selects the language receiver that finishes to enter wait state automatically.In case receive the control information that emitter sends, if there is not the tour guide information of the selected language of receiver in the control information, then it must send control information by the control channel of second radio-frequency module 204 as replying, emitter is according to the automatic adjustment information channel of the control information of receiver, control channel by first radio-frequency module sends control information then, receiver is provided with self working state after receiving this control information, automatically switches to corresponding information channel channel.Receive tour guide information, and store in the reception buffering area, digital signal processor 201 reads coded voice data, decoding, also plays.Can regulate simultaneously volume, cancel and play or play again and other button expanded function.

Claims (10)

1. interactive type wireless electronics guide system, it is characterized in that: comprise emitter and at least one portable receiver, tour guide information memory (102), first radio-frequency module (105) that emitter comprises main controller MCU (101) and is attached thereto, portable receiver comprises digital signal processor (201), random asccess memory (202), nonvolatile storage (203), second radio-frequency module (204), programmable logic device (207) and playback module (206), wherein:
Tour guide information is stored in the tour guide information memory (102), and described tour guide information adopts SPEEX speech coding algorithm coding; Be provided with in first radio-frequency module and be used to receive or control channel that sends control information and the information channel that is used to send tour guide information; Main controller MCU (101) reads out tour guide information from tour guide information memory (102), launch by first radio-frequency module (105) again;
Digital signal processor (201) is connected with second radio-frequency module (204) by spi bus, is provided with in second radio-frequency module (204) to be used to send or the control channel of receiving control information and be used to receive the information channel of tour guide information; The tour guide information that receives adopts the SPEEX decoder decode, after decoded voice are changed by programmable logic device (207), through playback module (206) output guide voice messaging;
Described first radio-frequency module under main controller MCU (101) control, second radio-frequency module (204) according to ZIGBEE communication protocol automatically switching channels, finishes communication interaction under the control of digital signal processor (201).
2. interactive type wireless electronics guide system as claimed in claim 1, it is characterized in that: described first radio-frequency module (105) and second radio-frequency module (204) adopt the ZIGBEE radio frequency chip, described communication interaction is based on ZIGBEE communication protocol, finish by time division multiplexing mode, control channel communication protocol and information channel communication protocol are encapsulated in the ZIGBEE SMAC agreement.
3. interactive type wireless electronics guide system as claimed in claim 2 is characterized in that: described ZIGBEE radio frequency chip is provided with #0~#15 totally 16 channels, and control channel uses the #0 channel, and information channel uses #1~#15 channel.
4. interactive type wireless electronics guide system as claimed in claim 3, it is characterized in that: first radio-frequency module is made up of a plurality of radio frequency units, by main controller MCU (101) radio frequency unit is carried out channel allocation, each radio frequency unit independently uses a certain channel, does not disturb mutually.
5. interactive type wireless electronics guide system as claimed in claim 4, it is characterized in that: each channel of described information channel can transmit multiple programs, the number of programs that described first radio-frequency module (105) can transmit is N times of each channel transmission number of programs, described N is smaller or equal to 16, and N is the radio frequency unit number that is used for information channel communication in first radio-frequency module.
6. as each described interactive type wireless electronics guide system of claim 1-5, it is characterized in that: the tour guide information coded data that has the two kinds of voice quality grades in arrowband and broadband in the described tour guide information memory (102), according to the behaviour in service of described information channel, dynamically decision sends the tour guide information of different phonetic credit rating.
7. as each described interactive type wireless electronics guide system of claim 1-5, it is characterized in that: also be provided with the data download interface in the emitter, also be provided with battery and battery charge interface in the portable receiver.
8. as each described interactive type wireless electronics guide system of claim 1-5, it is characterized in that: described emitter is a plurality of, a plurality of emitters and a local area network (LAN) of server networking becoming that is arranged on the control room, sight spot.
9. an interactive type wireless electronics guidance method is characterized in that comprising the steps:
A. initialization: start dispensing device as claimed in claim 1 and portable receiver, prepare after the initialization to use;
B. connect between dispensing device and the portable receiver: the b1. dispensing device just can receive control information by the control channel fixed time broadcast control information of first radio-frequency module in case portable receiver enters the radio transmission range of sight spot emitter; B2. receiver receives control information, and according to this control information self working state is set, and automatically switches to corresponding information channel channel;
C. the transmission of tour guide information: the information channel that emitter sends by first radio-frequency module (105) sends tour guide information;
D. the reception of tour guide information: receiver receives tour guide information by the information channel of second radio-frequency module (204), and the decoding broadcast, and receiver is listened at a sight spot to finish and just got back to init state automatically.
10. interactive type wireless electronics guidance method as claimed in claim 9, it is characterized in that: in the b 1 of step B, after receiver receives control information, do not broadcast advance notice if comprise the tour guide information of the selected language of receiver in the control information, then the control channel by second radio-frequency module (204) sends the control information of selected language tour guide information as replying, emitter is according to the automatic adjustment information channel of the control information of receiver, control channel by first radio-frequency module (105) sends control information then, after receiver receives this control information, self working state is set, automatically switches to corresponding information channel channel.
CN2007101646497A 2007-12-27 2007-12-27 Interactive wireless electric tour guide system and method Expired - Fee Related CN101247170B (en)

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