CN101335577B - Wireless updating method for multimedia data of vehicular equipment in urban public transport system - Google Patents
Wireless updating method for multimedia data of vehicular equipment in urban public transport system Download PDFInfo
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- CN101335577B CN101335577B CN200810021602XA CN200810021602A CN101335577B CN 101335577 B CN101335577 B CN 101335577B CN 200810021602X A CN200810021602X A CN 200810021602XA CN 200810021602 A CN200810021602 A CN 200810021602A CN 101335577 B CN101335577 B CN 101335577B
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Abstract
The invention, belonging to the wireless communication technical field, discloses a wireless update method for onboard equipment multimedia data in the urban mass transit system, which can be used for onboard equipment in the urban mass transit intelligently controlling and dispatching system. Voice data for automatic station announcement, weather data and advertisement data and the like are stored in the onboard equipment, and the data can be wirelessly updated easily through the method of the invention. The wireless update method of data is as follows: 1) switching the work mode of the onboard equipment from normal work mode to data update mode, then opening or restarting the onboard equipment; 2) establishing a wireless link between a hand-hold wireless update device and the onboard equipment, then sending a frame of a customized format; 3) carrying out storage processing or error processing in the onboard equipment according to the field content of the frame, and sending the corresponding command frames to hand-hold wireless update device; and 4) repeating steps 2 and 3 until data updating is completed.
Description
Technical field
The present invention relates to the wireless updating method of multimedia data of vehicular equipment in a kind of urban mass-transit system, be used for scenes such as the renewal of bus stop reporting speech data, ad data renewal, belong to the radio communication technology field.
Background technology
The continuous expansion with city size of developing rapidly along with urban economy, private car owning amount and bus quantity sharply increase, and particularly the big city makes the not smooth situation of traffic circulation become increasingly conspicuous, bring very big inconvenience to citizens' activities, and seriously hindered The development in society and economy.For this reason, government department releases serial laws and regulations, first develops city bus intelligence operation system, to alleviate serious day by day urban traffic pressure at present.
Because city bus intelligence operation system is a very huge and complicated system engineering, therefore can run into many difficulties and technical barrier unavoidably in deployment and implementation process.In order to reduce difficulty and the technical barrier that runs in the implementation process, numerous scholars and engineer have proposed many new theories and new method.Starting point of the present invention is exactly that enforcement for the city bus operation system provides a new method.
Nowadays, bus has been not only simply the passenger has been carried the destination from the departure place, and services such as automatic broadcasting, weather forecast, advertising message propaganda also are provided for the passenger simultaneously.
At present, urban mass-transit system is called out the stops and normally is solidificated in the memory circuit of mobile unit with speech data.This method realizes simple, and is with low cost, yet, when bus change circuit or when being transferred temporarily, need be connected to that PC goes up or the dismounting automatic stop reporter with cable, then wherein speech data is upgraded.If many buses are carried out same operation, then workload is very big.
When expiration of contract or businessman need change ad content between if public transport company and advertisement were bought and discussed, correspondent advertisement data in the memory circuit on the so just necessary change bus, and the renewal of this ad content is implemented on a lot of buses often simultaneously.If according to previous methods, then need be with the method for similar renewal speech data, very inconvenient.Also can run into similar problem when upgrading the other types data.
Therefore, in order to upgrade data in the mobile unit quickly and easily, it is necessary to propose the relatively independent equipment of a kind of new update method, design.
Summary of the invention
Technical problem: the wireless updating method of multimedia data of vehicular equipment in a kind of urban mass-transit system of the present invention, be intended to solve the difficult problem of Data Update inconvenience in the vehicle-mounted equipment of city bus.
Technical scheme: the present invention has designed a kind of wireless updating method of urban mass-transit system multimedia data of vehicular equipment, and the specific implementation of this method comprises following content:
This method is not subjected to time and spatial limitation, at first set up Radio Link by the wireless communication module in handheld device and the mobile unit, handheld device uses self-defining command frame and Frame that new data is sent to one or send to a plurality of mobile units with broadcast mode then, to finish Data Update; The realization of this method may further comprise the steps:
A. the mode of operation with mobile unit switches to the Data Update pattern by normal mode of operation, opens then or restarts mobile unit;
B. handheld device is inquired about visible mobile unit in its coverage, and according to the ID tabulation that provides in the database, automatic fitration does not need the mobile unit ID of Data Update;
C. the one or more mobile units among the selected step b result are set up wireless data link by wireless communication module in the handheld device and mobile unit, enter steps d then;
D. handheld device is inquired about the mobile unit current state, and mobile unit is to handheld device transmit status indication frame immediately;
E. handheld device parse state indication frame has been in the Data Update state as if mobile unit, and then handheld device is opened indicator light, and the staff selects to upgrade data source from the storage medium of handheld device; Handheld device can directly be used portable storage medias such as there being the SD card that upgrades data source or will upgrade in the large-capacity storage media that data source copies handheld device to by USB interface, enters step f; Otherwise, carry out error handling processing, return step b;
F. handheld device will be more new data press the transmission of data frame format framing;
G. mobile unit carries out verification to the frame that receives, if verification is wrong, then sends repeat requests to handheld device, requires to retransmit; If verification is errorless, then mobile unit is according to frame type number, subclass model, call number and fragment number, with the relevant position of data field content stores in the frame to the mobile unit storage medium, and sends acknowledgement frame to handheld device;
H. handheld device is judged the command frame type, if retransmission frame then will go up secondary data and send by the data frame format framing; Upgrade if simultaneously a plurality of mobile units are carried out multi-medium data,, will retransmit to all mobile units, and ignore the acknowledgement frame that other mobile units return as long as then receive retransmission frame; And change step g over to; If acknowledgement frame checks then whether renewal work is finished,, new data is pressed the data frame format framing send, and change step g over to if do not finish; If renewal work finishes, then more the mobile unit ID of new data needs deletion in the device id tabulation of Data Update from database, and closes indicator light, finishes this time to upgrade;
I. handheld device judges whether to need to upgrade other mobile units automatically, if change step b over to; Otherwise finish all renewal work.
Described handheld device uses self-defining command frame and Frame that new data is sent to one or send to a plurality of mobile units with broadcast mode, finish data interaction, frame head is used for frame synchronization, and frame type number is used to distinguish Frame and command frame, and each territory is defined as follows in the frame:
1. Frame: the subclass model is in order to distinguish platform device id data along the line, the speech data of calling out the stops, ad data; When sending platform device id data along the line, call number is represented the pairing platform sequence number of data field content, and this sequence number is used to realize the identification of bus to platform number, and fragment number be a sky; When speech data is called out the stops in transmission, call number is represented the platform sequence number of data field content correspondence, fragment number is represented the skew segment number of this station speech data of data field content correspondence, forms the voice document of finishing and deposits according to call number and the fragment number speech data of will calling out the stops; When sending ad data, call number is represented the advertisement number of data field content correspondence, fragment number is represented the skew segment number of this ad data of data field content correspondence, according to call number and fragment number ad data is formed the text of finishing and deposits, and reserved field is used for the later stage expansion;
2. command frame: the subclass model is finished frame in order to distinguish status poll frame, state indication frame, acknowledgement frame, retransmission frame and renewal, adopts iteron style number mode to strengthen antijamming capability; The reserved field that defines in the command frame is used to improve the later stage autgmentability of this method.
Beneficial effect: the data wireless update method that the present invention proposes can be to a mobile unit or simultaneously multi-medium data in a plurality of mobile units is carried out wireless renewal, greatly improved staff's operating efficiency, and cost is low, effective.
Description of drawings
Fig. 1 multimedia data of vehicular equipment is wireless new scene schematic diagram more,
Fig. 2 frame format, wherein Fig. 2 a is a data frame format, Fig. 2 b is a command frame format,
The interaction diagrams that Fig. 3 handheld device and multimedia data of vehicular equipment upgrade,
Fig. 4 handheld device workflow block diagram,
Vehicle-mounted equipment work FB(flow block) under Fig. 5 Data Update pattern.
Embodiment
Be elaborated below in conjunction with the concrete enforcement of accompanying drawing to the wireless updating method of the urban mass-transit system multimedia data of vehicular equipment of the present invention's proposition.
Accompanying drawing 1 is depicted as the staff and uses handheld device that mobile unit in the bus is carried out Data Update.Be not subjected to time and spatial limitation during use,, just can in needs, carry out wireless renewal mobile unit inner multimedia data as long as use supporting handheld device.Use this method can synchronization to a plurality of mobile units in multi-medium data upgrade.
The wireless renewal data method that uses the present invention to propose needs to use two kinds of self-defined frames: Frame and command frame, and shown in accompanying drawing 2 (a) and (b).
Adopt the frame synchronization communication mechanism between handheld device and the mobile unit, frame head is used for frame synchronization, and frame type number is used to distinguish Frame and command frame.
When sending Frame, the subclass model is in order to distinguishing data type, such as: platform device id data along the line, the speech data of calling out the stops, ad data etc.When sending platform device id data along the line, call number is represented the pairing platform sequence number of data field content, and this sequence number is used to realize the identification of bus to platform number, and fragment number be a sky; When speech data is called out the stops in transmission, call number is represented the platform sequence number of data field content correspondence in the frame, fragment number is represented the skew segment number of this station speech data of data field content correspondence, forms a voice document of finishing and deposits according to call number and the fragment number speech data of will calling out the stops; When sending ad data, call number is represented the advertisement number of data field content correspondence in the frame, and fragment number is represented the skew segment number of this ad data of data field content correspondence, according to call number and fragment number text of finishing of ad data composition is deposited.Reserved field is used for the later stage expansion.
When sending command frame, the subclass model is in order to distinguishing the command frame type, such as: frame etc. is finished in status poll frame, state indication frame, acknowledgement frame, retransmission frame and renewal, adopts iteron style number mode to strengthen antijamming capability.The reserved field that defines in the command frame is used to improve the later stage autgmentability.
In the implementation process in the frame the shared byte number in each territory be respectively: each 2 byte of synchronizing frame head and data length, each 1 byte of frame type number, subclass model, call number, fragment number, check code and end mark, data field adopts 512 bytes, and is identical with the page or leaf size of a lot of storage mediums.
Accompanying drawing 3 is depicted as the interaction diagrams of handheld device and multimedia data of vehicular equipment renewal, and accompanying drawing 4 is depicted as handheld device workflow block diagram, and accompanying drawing 5 is depicted as vehicle-mounted equipment work FB(flow block) under the Data Update pattern.
The specific implementation of wireless renewal data method may further comprise the steps and undertaken by described order:
1. the staff switches to the Data Update pattern with the mode of operation of mobile unit by normal mode of operation, opens then or restarts mobile unit;
2. the staff uses handheld device to inquire about visible mobile unit in this equipment coverage, and according to the ID tabulation that provides in the database, handheld device automatic fitration does not need the more mobile unit ID of new data, and will need the mobile unit ID that upgrades to enumerate on display screen, select for the staff;
3. if more the mobile unit ID of new data is in above-mentioned tabulation, the staff selectes this mobile unit (if need many mobile units are upgraded identical multi-medium datas, can select many mobile units this moment simultaneously).Set up data link by wireless communication module in handheld device and the mobile unit, change step 4 over to; If it is not in above-mentioned tabulation, then inquiry again promptly changes step 2 over to.If repeatedly do not find the more mobile unit of new data yet after the inquiry, ascertain the reason (reason has multiple, such as stopping apart from too far away etc.) enters step 2 once more after ascertaining the reason;
4. handheld device is to mobile unit transmit status inquiry frame, and mobile unit shows to handheld device transmit status indication frame whether current state of living in is the Data Update state immediately;
5. the handheld device parse state is indicated frame, if mobile unit can carry out Data Update, handheld device is opened LED light, the staff selects to upgrade data source (handheld device can directly be used portable storage medias such as there being the SD card that upgrades data source or will upgrade data source by USB interface and copy in the handheld device large-capacity storage media) from the handheld device storage medium, enter step 6; Otherwise, carry out error handling processing and return step 2;
6. handheld device is pressed the transmission of data frame format framing with data;
7. mobile unit carries out verification to the Frame that receives, if verification is wrong, then sends repeat requests to handheld device, requires to retransmit; If verification is errorless, then mobile unit is according to frame type number, subclass model, call number and fragment number, with the relevant position of data field content stores memory module in the mobile unit, and sends acknowledgement frame to handheld device;
8. handheld device is judged the received frame type, if retransmission frame, then will go up secondary data resends (if simultaneously a plurality of mobile units are carried out the multi-medium data renewal by the data frame format framing, as long as then receive retransmission frame, to retransmit to all mobile units, and ignore the acknowledgement frame that other mobile units return), change step 7 over to; If acknowledgement frame, check whether renewal work is finished, if do not finish, new data is pressed the data frame format framing to be sent, and change step 7 over to, if renewal work finishes, then this mobile unit ID is needed deletion in the device id tabulation of Data Update from database, and close this bus Data Update of LED lamp prompting staff and finish;
9. whether the handheld device automatic inspection upgrades other cars at device data, if enter step 2; Otherwise, upgrade end-of-job.
The wireless method for updating of multimedia data of vehicular equipment in above-described a kind of urban mass-transit system, in order to restriction the present invention, this method can not be used for the occasion that other need Data Update yet.All any modifications of being made within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the wireless updating method of multimedia data of vehicular equipment in the urban mass-transit system, it is characterized in that this method is not subjected to time and spatial limitation, at first set up Radio Link by the wireless communication module in handheld device and the mobile unit, handheld device uses self-defining command frame and Frame that new data is sent to one or send to a plurality of mobile units with broadcast mode then, to finish Data Update; The realization of this method may further comprise the steps:
A. the mode of operation with mobile unit switches to the Data Update pattern by normal mode of operation, opens then or restarts mobile unit;
B. handheld device is inquired about visible mobile unit in its coverage, and according to the ID tabulation that provides in the database, automatic fitration does not need the mobile unit ID of Data Update;
C. the one or more mobile units among the selected step b result are set up wireless data link by wireless communication module in the handheld device and mobile unit, enter steps d then;
D. handheld device is inquired about the mobile unit current state, and mobile unit is to handheld device transmit status indication frame immediately;
E. handheld device parse state indication frame has been in the Data Update state as if mobile unit, and then handheld device is opened indicator light, and the staff selects to upgrade data source from the storage medium of handheld device; Handheld device can directly be used to be had the SD card portable storage media that upgrades data source or will upgrade in the large-capacity storage media that data source copies handheld device to by USB interface, enters step f; Otherwise, carry out error handling processing, return step b;
F. handheld device will be more new data press the transmission of data frame format framing;
G. mobile unit carries out verification to the frame that receives, if verification is wrong, then sends repeat requests to handheld device, requires to retransmit; If verification is errorless, then mobile unit is according to frame type number, subclass model, call number and fragment number, with the relevant position of data field content stores in the frame to the mobile unit storage medium, and sends acknowledgement frame to handheld device;
H. handheld device is judged the command frame type, if retransmission frame then will go up secondary data and send by the data frame format framing; Upgrade if simultaneously a plurality of mobile units are carried out multi-medium data,, will retransmit to all mobile units, and ignore the acknowledgement frame that other mobile units return as long as then receive retransmission frame; And change step g over to; If acknowledgement frame checks then whether renewal work is finished,, new data is pressed the data frame format framing send, and change step g over to if do not finish; If renewal work finishes, then more the mobile unit ID of new data needs deletion in the device id tabulation of Data Update from database, and closes indicator light, finishes this time to upgrade;
I. handheld device judges whether to need to upgrade other mobile units automatically, if change step b over to; Otherwise finish all renewal work;
Described handheld device uses self-defining command frame and Frame that new data is sent to one or send to a plurality of mobile units with broadcast mode, finish data interaction, frame head is used for frame synchronization, and frame type number is used to distinguish Frame and command frame, and each territory is defined as follows in the frame:
1. Frame: the subclass model is in order to distinguish platform device id data along the line, the speech data of calling out the stops, ad data; When sending platform device id data along the line, call number is represented the pairing platform sequence number of data field content, and this sequence number is used to realize the identification of bus to platform number, and fragment number be a sky; When speech data is called out the stops in transmission, call number is represented the platform sequence number of data field content correspondence, fragment number is represented the skew segment number of this station speech data of data field content correspondence, forms the voice document of finishing and deposits according to call number and the fragment number speech data of will calling out the stops; When sending ad data, call number is represented the advertisement number of data field content correspondence, fragment number is represented the skew segment number of this ad data of data field content correspondence, according to call number and fragment number ad data is formed the text of finishing and deposits, and reserved field is used for the later stage expansion;
2. command frame: the subclass model is finished frame in order to distinguish status poll frame, state indication frame, acknowledgement frame, retransmission frame and renewal, adopts iteron style number mode to strengthen antijamming capability; The reserved field that defines in the command frame is used to improve the later stage autgmentability of this method.
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| CN200810021602XA CN101335577B (en) | 2008-08-05 | 2008-08-05 | Wireless updating method for multimedia data of vehicular equipment in urban public transport system |
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| CN200810021602XA CN101335577B (en) | 2008-08-05 | 2008-08-05 | Wireless updating method for multimedia data of vehicular equipment in urban public transport system |
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| KR20120062539A (en) * | 2010-12-06 | 2012-06-14 | 현대자동차주식회사 | Vehicle information update system and method using wireless access point connected to telematics server |
| CN103177745B (en) * | 2011-12-22 | 2015-12-02 | 比亚迪股份有限公司 | UPNP in-vehicle multi-media system and exchange method thereof |
| CN103968823A (en) * | 2013-01-24 | 2014-08-06 | 深圳市凯立德科技股份有限公司 | Mobile navigation equipment, vehicle-mounted equipment and information synchronization method of mobile navigation equipment and vehicle-mounted equipment |
| CN105374220A (en) * | 2014-08-22 | 2016-03-02 | 香港生产力促进局 | Vehicle-mounted bus line conversion box and conversion method thereof |
| CN104540121A (en) * | 2014-12-29 | 2015-04-22 | 触动多媒体技术（上海）有限公司 | Multimedia on-board equipment content updating system and method |
| CN105867985B (en) * | 2016-04-25 | 2018-12-21 | 广州路派电子科技有限公司 | A kind of method of vehicle-mounted decoder software upgrade file |
| CN107864172A (en) * | 2016-09-22 | 2018-03-30 | 法乐第(北京)网络科技有限公司 | Data-updating method, device, vehicular amusement apparatus and the mobile terminal of vehicular amusement apparatus |
| CN111885541B (en) * | 2020-06-24 | 2024-06-04 | 长沙丰灼通讯科技有限公司 | Wireless access method of intelligent pull ring system |
| CN111858186B (en) * | 2020-09-22 | 2020-12-08 | 蘑菇车联信息科技有限公司 | Vehicle-mounted terminal system monitoring method and system, electronic equipment and readable storage medium |
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