CN103400495B - Davinci platform-based bus multimedia play and video monitoring and scheduling system - Google Patents
Davinci platform-based bus multimedia play and video monitoring and scheduling system Download PDFInfo
- Publication number
- CN103400495B CN103400495B CN201310311146.3A CN201310311146A CN103400495B CN 103400495 B CN103400495 B CN 103400495B CN 201310311146 A CN201310311146 A CN 201310311146A CN 103400495 B CN103400495 B CN 103400495B
- Authority
- CN
- China
- Prior art keywords
- interface
- module
- audio
- video
- vehicle
- Prior art date
- 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.)
- Active
Links
Abstract
The invention discloses a davinci platform-based bus multimedia play and video monitoring and scheduling system. The system consists of three parts, i.e., a power module (1100), a host (1200) and an operating terminal (1300), wherein the power module (1100) provides power output orienting the system, is communicated with the host (1200) through a digital/analog interface and mainly realizes the functions such as working state switching and audio power amplification of the system; the host (1200), which is used as the core of the system, is mainly used for finishing the functions such as audio and video data acquisition, digital signal processing, vehicle real-time positioning, system network control, wireless communication control and on-board equipment management; and the operating terminal (1300) is a man-machine interface orienting a vehicle driver, is communicated with the host (1200) by using an RS485 interface and realizes man-machine interaction of the vehicle driver and the system through related functional keys, an infrared remote controller and a color liquid crystal display screen.
Description
Technical field
The present invention relates to the technical fields such as internet, multimedia, GPS location, wireless mobile communications and radio-frequency (RF) identification, particularly relate to a kind of public transport multimedia based on davinci platform, video monitoring and dispatching system.
Background technology
Along with the fast development of urban economy, the contradiction that Urban traffic demand increases fast between resource environment constraint is becoming increasingly acute.In order to adapt to the demand of Urban Traffic motorization development process, particularly adapt to the demand of city and traffic good interaction, under its development of informationization technology, the management system of public traffic with vehicle management and intelligent scheduling function starts to enter public transit trade, and urban public transport has stepped informationalized paces.
But at present, existing public transport vehicle-mounted electronic equipment is of a great variety and separate, and Bus information resource cannot effectively fully utilize; Public transit system operation mode is outmoded, cannot effectively improve transit quality of service and Consumer's Experience; Public transport vehicle-mounted electronic device information technology application level is lower, and business administration cannot break away from manual operations and experience management phase.These seriously constrain the development of urban transportation towards " unimpeded, efficient, safety, green " direction.In order to adapt to the demand of Traffic Development, be badly in need of a kind of intelligent distribution and management system for transit operation provides a kind of, unified management being carried out to vehicle electronic device, vehicle-state is monitored in real time, public transit system running is realized omnidistance intervention.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, for transit operation provides a kind of, unified management is carried out to vehicle electronic device, vehicle-state is monitored in real time, omnidistance intelligent distribution and management system of intervening is realized to public transit system running.
Based on the public transport multimedia of davinci platform, video monitoring and dispatching system, it is characterized in that: system is made up of power module (1100), main frame (1200) and operating terminal (1300) three part, wherein, main frame (1200) is the core of system, power module (1100) system-oriented provides power supply to export, communicated with main frame (1200) by digital-to-analog interface, operating terminal (1300) is the Man Machine Interface towards vehicle driver, by the transmission of the data between RS485 Interface realization and main frame (1200) and control signal, by the composite analog video signal that analog interface Receiving Host (1200) sends, by correlation function button, Infrared remote controller also coordinates chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system,
Described power module (1100) supports the input of direct current wide power, mainly comprise Power convert output, mode of operation controls, power network controls and Audio power amplifier four partial function circuit, realize system front end Power convert, working state of system switching, Audio power amplifier, power network control;
Described Power convert output function circuit supports the input of 9-36V direct current wide power, 12V/6A power supply exports, and wherein respectively provides 12V/2A direct current to export towards four tunnel external camera of main frame (1200), video acquisition functional module (1202) and operating terminal (1300) respectively;
Described mode of operation controlling functions circuit passes through digital interface Real-Time Monitoring vehicle launch signal, coupled system sleeping/waking control signal, and under the cooperation of main frame (1200), control system automatically switches between mode of operation and low-power consumption mode;
Described power network controlling functions circuit, according to the current different mode of operation of system and state, carries out switch control rule by digital interface to exporting towards four tunnel external camera power supplys of video acquisition functional module (1202) and Audio power amplifier;
Described Audio power amplifier functional circuit receives the two-way simulated audio signal of from host (1200) by analog interface, and support that two-way bridge-tied load Audio power amplifier exports, output power is respectively 10W and 40W;
Described main frame (1200) is the core of system, adopt DaVinci(Leonardo da Vinci) framed structure of+FPGA, mainly comprise signal processor (1201), video acquisition functional module (1202), multi-media player function module (1203), audio collection functional module (1204), audio frequency reports functional module (1205), mobile unit interface module (1206), wireless mobile communications module (1207), Wi-Fi module (1208), GPS module (1209), Interface Expanding functional module (1210), SD card memory function module (1211) and system program memory module (1212), enforcement audio, video data gathers, multimedia and monitor video are play, digital signal processing, vehicle is located in real time, grid controls, the control of radio communication connection and mobile unit,
Described signal processor (1201) is the core cell of digital signal processing, by DaVinci(Leonardo da Vinci)+FPGA forms; During system works, realize gathering the pre-service of video data and peripheral circuit and DaVinci(Leonardo da Vinci that obtain primarily of FPGA) between communication connection, by DaVinci(Leonardo da Vinci) implement encoding and decoding audio and video data process, grid controls and the control of peripheral each functional module;
Described video acquisition functional module (1202) supports the Real-time Collection of 4 road CIF form (standard image format) videos; Four-way CCD camera is powered by power module (1100), the video data collected send signal processor (1201), first the synthesis of 4 road CIF form (standard image format) videos to 4CIF resolution video is implemented by FPGA, DaVinci(Leonardo da Vinci is sent again by VPFE interface (Video Processing Front-End, Video processing front-end interface)) carry out Unified coding process;
First via VPBE interface (Video Processing Back-End in described multi-media player function module (1203) Received signal strength processor (1201), Video processing back end interface) composite analog video signal that exports, shown by analog video display, the rolling realizing memory-type digital multimedia is play, and the duty of this module can be undertaken arranging and adjusting by function of infrared remote control module (1301);
Described audio collection functional module (1204) is communicated with signal processor (1201) by ASP interface (Audio Serial Port, audio serial interface), supports the Real-time Collection of two-way audio;
Described audio frequency reports the conversion that functional module (1205) implements Text To Speech, is communicated, support three road voice broadcasts by ASP interface (Audio Serial Port, audio serial interface) with signal processor (1201); Wherein two-way coordinates the audio power amplifying circuit in power module (1100) to realize vehicle interior and outside voice broadcast, the voice broadcast of text message towards vehicle driver of the 3rd tunnel for implementing transit operation center and issuing; The switching of three road voice-grade channels, switch and volume are controlled respectively by digital interface;
Described mobile unit interface module (1206) comprises the accurate industrial series interface (RS232 or RS485) of three road signs and multi-path digital/analog interface, for the access of vehicle electronic device to implement the unified management of vehicle electronic device; Wherein, the type (being RS232 or RS485) of each road serial line interface is configurable, for realizing the communication with vehicle-mounted LED display screen equipment, digital-to-analog interface can realize switch for vehicle door, the control of body light light and the monitoring of mobile unit state;
Described wireless mobile communications module (1207) is connected with the wireless mobile communications of transit operation center and public wireless network for realizing system; According to different demands, wireless mobile communications module (1207) can the module of choice for use GPRS technology, also can the module of choice for use 3G technology; When wireless mobile communications module (1207) adopts GPRS technology, module is communicated with signal processor (1201) by UART interface; When wireless communication module adopts 3G technology, module is communicated with signal processor (1201) by USB interface;
Described Wi-Fi module (1208) is communicated with signal processor (1201) by USB interface, wireless mobile communications module (1207) is coordinated to build WLAN, there is provided local free wireless access service towards passenger, uploaded by the batch realizing the mass data that the wireless renewal of system program and system acquisition obtain with the connection of Wi-Fi Hotspot in bus station;
Described GPS module (1209) is communicated with signal processor (1201) by UART interface, the status information such as Real-time Collection vehicle location, speed in vehicle operation, coordinates wireless mobile communications module (1207), by mobile radio networks, the status informations such as the current vehicle position collected, speed are uploaded to transit operation central server in real time;
Described Interface Expanding functional module (1210) is communicated with signal processor (1201) by USB interface, as required, provides the configurable industrial standard serial ports (RS232/RS485) of multichannel type, CAN interface and digital-to-analog interface;
Described SD card memory function module (1211) is by DaVinci(Leonardo da Vinci) on SD card controller interface communicate with signal processor (1201);
Described system program memory module (1212) adopts Large Copacity NAND FLASH chip, by DaVinci(Leonardo da Vinci) on external memory interface communicate with signal processor (1201), storage system program; NAND FLASH chip and DaVinci(Leonardo da Vinci) between to be realized the conversion of signal level by FPGA;
Described operating terminal (1300), as Man Machine Interface, mainly comprises function of infrared remote control module (1301), manually to call out the stops functional module (1302), microcontroller (1303), radio frequency recognition function module (1304), temperature acquisition functional module (1305) and monitor video playing function module (1306); This end face provides 20 buttons to vehicle driver, comprise " beginning " key, " end " key, " switching " key, " confirmation " key, " menu " key, " warning " key, four direction key and 0 to 9 totally ten digital keys, coordinate Infrared remote controller and chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system;
Described operating terminal (1300) realizes communicating with main frame (1200) by industrial standard serial ports RS485 under the control of microcontroller (1303), realizes the transmission of data and control signal etc.;
Described function of infrared remote control module (1301) is by microcontroller (1303) receives infrared remote instruction with the I/O mouth of interrupt function, and to realize system state, system time, grid connects, volume etc. of calling out the stops arranges and adjust;
Described functional module (1302) of manually calling out the stops is by microcontroller (1303) communicates with microcontroller (1303) with interrupt function I/O mouth, the manual speech coordinating function button to realize bus station and bus service term is reported, and needs according to Vehicular behavior the warning realizing the beginning of vehicle operating task, switching, confirmation, termination and fortuitous event;
Described radio frequency recognition function module (1304) is communicated with microcontroller (1303) by SPI interface (Serial Peripheral Interface, Serial Peripheral Interface (SPI)), reads the IC card information of bus drivers;
Described temperature acquisition functional module (1305) passes through I
2c interface communicates with microcontroller (1303), the temperature information of Real-time Collection vehicle interior;
Described monitor video playing function module (1306) is received from the second road VPBE interface (Video Processing Back-End in signal processor (1201) by analog interface, Video processing back end interface) composite analog video signal that exports convert digital rgb format video signal to, by being positioned at 7 cun of chromatic liquid crystal screens displays of operating terminal (1300).
Advantage of the present invention is: device integration is high, information real-time is good, equipment operation cost is low, Consumer's Experience is better and system operation mode is versatile and flexible, effectively can improve service quality and the information system management level of public transit system.
Accompanying drawing explanation
Accompanying drawing 1 is the one-piece construction schematic block diagram of native system.
Accompanying drawing 2 is video acquisition and the treatment circuit structural schematic block diagram of native system.
Accompanying drawing 3 is the workflow schematic block diagram of native system.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated:
As shown in Figure 1, based on the public transport multimedia of davinci platform, video monitoring and dispatching system, it is characterized in that: system is made up of power module (1100), main frame (1200) and operating terminal (1300) three part, wherein, main frame (1200) is the core of system, power module (1100) system-oriented provides power supply to export, communicated with main frame (1200) by digital-to-analog interface, operating terminal (1300) is the Man Machine Interface towards vehicle driver, by the transmission of the data between RS485 Interface realization and main frame (1200) and control signal, by the composite analog video signal that analog interface Receiving Host (1200) sends, by correlation function button, Infrared remote controller also coordinates chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system,
Described power module (1100) supports the input of direct current wide power, mainly comprise Power convert output, mode of operation controls, power network controls and Audio power amplifier four partial function circuit, realize system front end Power convert, working state of system switching, Audio power amplifier, power network control;
Described Power convert output function circuit supports the input of 9-36V direct current wide power, 12V/6A power supply exports, and wherein respectively provides 12V/2A direct current to export towards four tunnel external camera of main frame (1200), video acquisition functional module (1202) and operating terminal (1300) respectively;
Described mode of operation controlling functions circuit passes through digital interface Real-Time Monitoring vehicle launch signal, coupled system sleeping/waking control signal, and under the cooperation of main frame (1200), control system automatically switches between mode of operation and low-power consumption mode;
Described power network controlling functions circuit, according to the current different mode of operation of system and state, carries out switch control rule by digital interface to exporting towards four tunnel external camera power supplys of video acquisition functional module (1202) and Audio power amplifier;
Described Audio power amplifier functional circuit receives the two-way simulated audio signal of from host (1200) by analog interface, and support that two-way bridge-tied load Audio power amplifier exports, output power is respectively 10W and 40W;
Described main frame (1200) is the core of system, adopt DaVinci(Leonardo da Vinci) framed structure of+FPGA, mainly comprise signal processor (1201), video acquisition functional module (1202), multi-media player function module (1203), audio collection functional module (1204), audio frequency reports functional module (1205), mobile unit interface module (1206), wireless mobile communications module (1207), Wi-Fi module (1208), GPS module (1209), Interface Expanding functional module (1210), SD card memory function module (1211) and system program memory module (1212), enforcement audio, video data gathers, multimedia and monitor video are play, digital signal processing, vehicle is located in real time, grid controls, the control of radio communication connection and mobile unit,
Described signal processor (1201) is the core cell of digital signal processing, by DaVinci(Leonardo da Vinci)+FPGA forms; During system works, realize gathering the pre-service of video data and peripheral circuit and DaVinci(Leonardo da Vinci that obtain primarily of FPGA) between communication connection, by DaVinci(Leonardo da Vinci) implement encoding and decoding audio and video data process, grid controls and the control of peripheral each functional module;
Described video acquisition functional module (1202) supports the Real-time Collection of 4 road CIF form (standard image format) videos; Four-way CCD camera is powered by power module (1100), the video data collected send signal processor (1201), first the synthesis of 4 road CIF form (standard image format) videos to 4CIF resolution video is implemented by FPGA, DaVinci(Leonardo da Vinci is sent again by VPFE interface (Video Processing Front-End, Video processing front-end interface)) carry out Unified coding process;
First via VPBE interface (Video Processing Back-End in described multi-media player function module (1203) Received signal strength processor (1201), Video processing back end interface) composite analog video signal that exports, shown by analog video display, the rolling realizing memory-type digital multimedia is play, and the duty of this module can be undertaken arranging and adjusting by function of infrared remote control module (1301);
Described audio collection functional module (1204) is communicated with signal processor (1201) by ASP interface (Audio Serial Port, audio serial interface), supports the Real-time Collection of two-way audio;
Described audio frequency reports the conversion that functional module (1205) implements Text To Speech, is communicated, support three road voice broadcasts by ASP interface (Audio Serial Port, audio serial interface) with signal processor (1201); Wherein two-way coordinates the audio power amplifying circuit in power module (1100) to realize vehicle interior and outside voice broadcast, the voice broadcast of text message towards vehicle driver of the 3rd tunnel for implementing transit operation center and issuing; The switching of three road voice-grade channels, switch and volume are controlled respectively by digital interface;
Described mobile unit interface module (1206) comprises the accurate industrial series interface (RS232 or RS485) of three road signs and multi-path digital/analog interface, for the access of vehicle electronic device to implement the unified management of vehicle electronic device; Wherein, the type (being RS232 or RS485) of each road serial line interface is configurable, for realizing the communication with vehicle-mounted LED display screen equipment, digital-to-analog interface can realize switch for vehicle door, the control of body light light and the monitoring of mobile unit state;
Described wireless mobile communications module (1207) is connected with the wireless mobile communications of transit operation center and public wireless network for realizing system; According to different demands, wireless mobile communications module (1207) can the module of choice for use GPRS technology, also can the module of choice for use 3G technology; When wireless mobile communications module (1207) adopts GPRS technology, module is communicated with signal processor (1201) by UART interface; When wireless communication module adopts 3G technology, module is communicated with signal processor (1201) by USB interface;
Described Wi-Fi module (1208) is communicated with signal processor (1201) by USB interface, wireless mobile communications module (1207) is coordinated to build WLAN, there is provided local free wireless access service towards passenger, uploaded by the batch realizing the mass data that the wireless renewal of system program and system acquisition obtain with the connection of Wi-Fi Hotspot in bus station;
Described GPS module (1209) is communicated with signal processor (1201) by UART interface, the status information such as Real-time Collection vehicle location, speed in vehicle operation, coordinates wireless mobile communications module (1207), by mobile radio networks, the status informations such as the current vehicle position collected, speed are uploaded to transit operation central server in real time;
Described Interface Expanding functional module (1210) is communicated with signal processor (1201) by USB interface, as required, provides the configurable industrial standard serial ports (RS232/RS485) of multichannel type, CAN interface and digital-to-analog interface;
Described SD card memory function module (1211) is by DaVinci(Leonardo da Vinci) on SD card controller interface communicate with signal processor (1201);
Described system program memory module (1212) adopts Large Copacity NAND FLASH chip, by DaVinci(Leonardo da Vinci) on external memory interface communicate with signal processor (1201), storage system program; NAND FLASH chip and DaVinci(Leonardo da Vinci) between to be realized the conversion of signal level by FPGA;
Described operating terminal (1300), as Man Machine Interface, mainly comprises function of infrared remote control module (1301), manually to call out the stops functional module (1302), microcontroller (1303), radio frequency recognition function module (1304), temperature acquisition functional module (1305) and monitor video playing function module (1306); This end face provides 20 buttons to vehicle driver, comprise " beginning " key, " end " key, " switching " key, " confirmation " key, " menu " key, " warning " key, four direction key and 0 to 9 totally ten digital keys, coordinate Infrared remote controller and chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system;
Described operating terminal (1300) realizes communicating with main frame (1200) by industrial standard serial ports RS485 under the control of microcontroller (1303), realizes the transmission of data and control signal etc.;
Described function of infrared remote control module (1301) is by microcontroller (1303) receives infrared remote instruction with the I/O mouth of interrupt function, and to realize system state, system time, grid connects, volume etc. of calling out the stops arranges and adjust;
Described functional module (1302) of manually calling out the stops is by microcontroller (1303) communicates with microcontroller (1303) with interrupt function I/O mouth, the manual speech coordinating function button to realize bus station and bus service term is reported, and needs according to Vehicular behavior the warning realizing the beginning of vehicle operating task, switching, confirmation, termination and fortuitous event;
Described radio frequency recognition function module (1304) is communicated with microcontroller (1303) by SPI interface (Serial Peripheral Interface, Serial Peripheral Interface (SPI)), reads the IC card information of bus drivers;
Described temperature acquisition functional module (1305) passes through I
2c interface communicates with microcontroller (1303), the temperature information of Real-time Collection vehicle interior;
Described monitor video playing function module (1306) is received from the second road VPBE interface (Video Processing Back-End in signal processor (1201) by analog interface, Video processing back end interface) composite analog video signal that exports convert digital rgb format video signal to, by being positioned at 7 cun of chromatic liquid crystal screens displays of operating terminal (1300).
As the management platform of public transport vehicle-mounted electronic equipment, these systems of access such as digital-to-analog interface, RS232/RS485 interface and CAN interface that vehicle electronic device can be provided by mobile unit interface module (1206) and Interface Expanding functional module (1210), to form vehicle electronic device network, thus realize the unified management of system to vehicle electronic device; System is by the Real-Time Monitoring to equipment state, identification equipment fault also carries out alarm to fault, and by mobile radio networks reporting fault to transit operation center, assist transit operation center to carry out scheduling decision, to ensure public transit system safety, Effec-tive Function.
After vehicle launch, the power module (1100) of system detects vehicle launch signal, by system hibernates/wake control signal up, proceeds to mode of operation in conjunction with main frame (1200) control system by low-power consumption mode; After entering mode of operation, first system completes self-inspection and vehicle electronic device state-detection, radio frequency recognition function module (1304) identifies driver's IC card information, then system by wireless mobile communications module (1207) automatically and transit operation central server set up wireless connections, report vehicle-state and driver information, receive assignment instructions; Vehicle driver carries out task confirmation, preliminary work of finishing the work by the upper relevant function button etc. of operating terminal (1300).
Vehicle driver can send telecommand by function of infrared remote control module (1301) to system, arranges and adjusts, make equipment be in best running status to equipment state, system time, network connection, volume etc. of calling out the stops.
In vehicle normal course of operation, the status information such as current vehicle position, speed that system obtains according to GPS module (1209), and in conjunction with mission bit stream, complete following work simultaneously:
(1) carry out the automatic information broadcast of bus station and bus service term in conjunction with audio frequency report functional module (1205) towards passenger, carry out word displaying by vehicle-mounted LED display screen simultaneously.
(2) status information is uploaded to transit operation center by mobile radio networks and shows with the form of electronic chart by combining wireless mobile communication module (1207) in real time, realize the real-time control of transit operation center to car status information, assist transit operation center to carry out managing and scheduling decision;
(3) status information such as current vehicle position, speed completes parsing at the server at transit operation center, and real-time update is to network electronic map, realizes the public by the real-time query of public network to travel condition of vehicle information.
In case of need, vehicle driver's functional module (1302) of can manually calling out the stops is intervened vehicle and to be called out the stops operation, realizes the manual report work of vehicle site information and bus service term.
In bus normal course of operation, for the text instruction towards bus driver that transit operation center issues, signal processor (1201) is reported functional module (1205) in conjunction with audio frequency and is reported towards vehicle driver in the form of speech.
In bus normal course of operation, in case of need, combining wireless mobile communication module (1207) and audio frequency report functional module (1205), carry out real-time voice call between transit operation center and vehicle driver by real-time voice call function.Transit operation center and vehicle driver can be the initiators of voice communication, after acquisition the other side confirms, namely can carry out real-time speech communicating.
In bus normal course of operation, system shows service by multi-media player function module (1203) realization oriented digital multimedia, and multimedia program content and state etc. can be undertaken arranging and adjusting by function of infrared remote control module (1301).
In vehicle normal course of operation, temperature acquisition functional module (1305) Real-time Collection vehicle interior temperature information, if Current Temperatures departs from the temperature range set, system carries out temperature adjustment by voice reminder driver automatically;
In bus normal course of operation, system carries out audio, video data collecting work by video acquisition functional module (1202) and audio collection functional module (1204) to orientation such as vehicle front, driver and passengers.For gathering the mass data such as audio frequency, video of acquisition after treatment, be stored in local SD card on the one hand, upload eventually through Wi-Fi wireless network batch, can as the process foundation of accident dispute etc., on the other hand can be uploaded to transit operation center in real time and show in real time in dispatching center, as the foundation of transit operation center implementation scheduling decision by 3G network (when the wireless mobile communications module of system selects the module of 3G technology) when needed.
After this subtask completes, system realizes joining with the task at transit operation center by mobile radio networks automatically, and reporting system state; Whether system interrogation transit operation center has new assignment instructions, if having, then reenters execution status of task.
If there is no new assignment instructions, system is by the wireless connections with transit operation central server, timing reading system program version information and Multi-media Material version information, when new program version or Multi-media Material version being detected, the system for the treatment of is in idle condition, the wireless downloading of automatic implementation system redaction program or redaction Multi-media Material, in new version system program writing system program memory function module (1212), redaction Multi-media Material is stored in SD card memory function module (1211), treat system autoboot, complete renewal rewards theory, also the renewal rewards theory of update mode completion system program and Multi-media Material can be moved by SD card hand.
During out of service the and system idles of vehicle, system power supply module (1100) control system proceeds to low-power consumption mode by mode of operation, waits for lower subtask.
Above-mentioned embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not limited by the examples; the amendment done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, cutting; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (1)
1., based on the public transport multimedia of davinci platform, video monitoring and dispatching system, it is characterized in that: system is made up of power module (1100), main frame (1200) and operating terminal (1300) three part, wherein, main frame (1200) is the core of system, power module (1100) system-oriented provides power supply to export, communicated with main frame (1200) by digital-to-analog interface, operating terminal (1300) is the Man Machine Interface towards vehicle driver, by the transmission of the data between RS485 Interface realization and main frame (1200) and control signal, by the composite analog video signal that analog interface Receiving Host (1200) sends, by correlation function button, Infrared remote controller also coordinates chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system,
Described power module (1100) supports the input of direct current wide power, mainly comprise Power convert output, mode of operation controls, power network controls and Audio power amplifier four partial function circuit, realize system front end Power convert, working state of system switching, Audio power amplifier, power network control;
Described Power convert output function circuit supports the input of 9-36V direct current wide power, 12V/6A power supply exports, and wherein respectively provides 12V/2A direct current to export towards four tunnel external camera of main frame (1200), video acquisition functional module (1202) and operating terminal (1300) respectively;
Described mode of operation controlling functions circuit passes through digital interface Real-Time Monitoring vehicle launch signal, coupled system sleeping/waking control signal, and under the cooperation of main frame (1200), control system automatically switches between mode of operation and low-power consumption mode;
Described power network controlling functions circuit, according to the current different mode of operation of system and state, carries out switch control rule by digital interface to exporting towards four tunnel external camera power supplys of video acquisition functional module (1202) and Audio power amplifier;
Described Audio power amplifier functional circuit receives the two-way simulated audio signal of from host (1200) by analog interface, and support that two-way bridge-tied load Audio power amplifier exports, output power is respectively 10W and 40W;
Described main frame (1200) is the core of system, adopt the framed structure of DaVinci chip+FPGA, mainly comprise signal processor (1201), video acquisition functional module (1202), multi-media player function module (1203), audio collection functional module (1204), audio frequency reports functional module (1205), mobile unit interface module (1206), wireless mobile communications module (1207), Wi-Fi module (1208), GPS module (1209), Interface Expanding functional module (1210), SD card memory function module (1211) and system program memory module (1212), enforcement audio, video data gathers, multimedia and monitor video are play, digital signal processing, vehicle is located in real time, grid controls, the control of radio communication connection and mobile unit,
Described signal processor (1201) is the core cell of digital signal processing, is made up of DaVinci chip+FPGA; During system works, realizing gathering the pre-service of video data and the communication connection between peripheral circuit and DaVinci chip that obtain primarily of FPGA, implementing encoding and decoding audio and video data process by DaVinci chip, grid controls and the control of peripheral each functional module;
Described video acquisition functional module (1202) supports the Real-time Collection of 4 road CIF form (standard image format) videos; Four-way CCD camera is powered by power module (1100), the video data collected send signal processor (1201), first the synthesis of 4 road CIF form (standard image format) videos to 4CIF resolution video is implemented by FPGA, DaVinci chip is sent to carry out Unified coding process by VPFE interface (Video Processing Front-End, Video processing front-end interface) again;
First via VPBE interface (Video Processing Back-End in described multi-media player function module (1203) Received signal strength processor (1201), Video processing back end interface) composite analog video signal that exports, shown by analog video display, the rolling realizing memory-type digital multimedia is play, and the duty of this module can be undertaken arranging and adjusting by function of infrared remote control module (1301);
Described audio collection functional module (1204) is communicated with signal processor (1201) by ASP interface (Audio Serial Port, audio serial interface), supports the Real-time Collection of two-way audio;
Described audio frequency reports the conversion that functional module (1205) implements Text To Speech, by ASP interface (AudioSerial Port, audio serial interface) communicate with signal processor (1201), support three road voice broadcasts; Wherein two-way coordinates the audio power amplifying circuit in power module (1100) to realize vehicle interior and outside voice broadcast, the voice broadcast of text message towards vehicle driver of the 3rd tunnel for implementing transit operation center and issuing; The switching of three road voice-grade channels, switch and volume are controlled respectively by digital interface;
Described mobile unit interface module (1206) comprises the accurate industrial series interface of three road signs and multi-path digital/analog interface, for the access of vehicle electronic device to implement the unified management of vehicle electronic device; Wherein, the type of the serial line interface described in each road can be configured to RS232 or RS485, and for realizing the communication with vehicle-mounted LED display screen equipment, digital-to-analog interface can realize switch for vehicle door, the control of body light light and the monitoring of mobile unit state;
Described wireless mobile communications module (1207) is connected with the wireless mobile communications of transit operation center and public wireless network for realizing system; According to different demands, wireless mobile communications module (1207) can the module of choice for use GPRS technology, also can the module of choice for use 3G technology; When wireless mobile communications module (1207) adopts GPRS technology, module is communicated with signal processor (1201) by UART interface; When wireless communication module adopts 3G technology, module is communicated with signal processor (1201) by USB interface;
Described Wi-Fi module (1208) is communicated with signal processor (1201) by USB interface, wireless mobile communications module (1207) is coordinated to build WLAN, there is provided local free wireless access service towards passenger, uploaded by the batch realizing the mass data that the wireless renewal of system program and system acquisition obtain with the connection of Wi-Fi Hotspot in bus station;
Described GPS module (1209) is communicated with signal processor (1201) by UART interface, the status information of Real-time Collection vehicle location, speed in vehicle operation, coordinates wireless mobile communications module (1207), by mobile radio networks, the status information of the current vehicle position collected, speed is uploaded to transit operation central server in real time;
Described Interface Expanding functional module (1210) is communicated with signal processor (1201) by USB interface, as required, the industrial standard serial ports providing multichannel type to can be configured to RS232 or RS485, CAN interface and digital-to-analog interface;
Described SD card memory function module (1211) is communicated with signal processor (1201) by the SD card controller interface on DaVinci chip;
Described system program memory module (1212) adopts Large Copacity NAND FLASH chip, is communicated with signal processor (1201) by the external memory interface on DaVinci chip, storage system program; Realized the conversion of signal level by FPGA between NANDFLASH chip and DaVinci chip;
Described operating terminal (1300), as Man Machine Interface, mainly comprises function of infrared remote control module (1301), manually to call out the stops functional module (1302), microcontroller (1303), radio frequency recognition function module (1304), temperature acquisition functional module (1305) and monitor video playing function module (1306); This end face provides 20 buttons to vehicle driver, comprise " beginning " key, " end " key, " switching " key, " confirmation " key, " menu " key, " warning " key, four direction key and 0 to 9 totally ten digital keys, coordinate Infrared remote controller and chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system;
Described operating terminal (1300) realizes communicating with main frame (1200) by industrial standard serial ports RS485 under the control of microcontroller (1303), realizes the transmission of data and control signal;
Described function of infrared remote control module (1301) is by microcontroller (1303) receives infrared remote instruction with the I/O mouth of interrupt function, and to realize system state, system time, grid connects and volume of calling out the stops arranges and adjusts;
Described functional module (1302) of manually calling out the stops is by microcontroller (1303) communicates with microcontroller (1303) with interrupt function I/O mouth, the manual speech coordinating function button to realize bus station and bus service term is reported, and needs according to Vehicular behavior the warning realizing the beginning of vehicle operating task, switching, confirmation, termination and fortuitous event;
Described radio frequency recognition function module (1304) is communicated with microcontroller (1303) by SPI interface (Serial Peripheral Interface, Serial Peripheral Interface (SPI)), reads the IC card information of bus drivers;
Described temperature acquisition functional module (1305) passes through I
2c interface communicates with microcontroller (1303), the temperature information of Real-time Collection vehicle interior;
Described monitor video playing function module (1306) is received from the second road VPBE interface (Video Processing Back-End in signal processor (1201) by analog interface, Video processing back end interface) composite analog video signal that exports convert digital rgb format video signal to, by being positioned at 7 cun of chromatic liquid crystal screens displays of operating terminal (1300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310311146.3A CN103400495B (en) | 2013-07-22 | 2013-07-22 | Davinci platform-based bus multimedia play and video monitoring and scheduling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310311146.3A CN103400495B (en) | 2013-07-22 | 2013-07-22 | Davinci platform-based bus multimedia play and video monitoring and scheduling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103400495A CN103400495A (en) | 2013-11-20 |
| CN103400495B true CN103400495B (en) | 2015-06-17 |
Family
ID=49564104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310311146.3A Active CN103400495B (en) | 2013-07-22 | 2013-07-22 | Davinci platform-based bus multimedia play and video monitoring and scheduling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103400495B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913379A (en) * | 2019-10-15 | 2020-03-24 | 上海思致汽车工程技术有限公司 | Vehicle-mounted multifunctional acoustic system |
| CN113992687B (en) * | 2021-12-28 | 2022-04-08 | 浙江宇视科技有限公司 | Intelligent service cluster scheduling method and device, electronic equipment and storage medium |
| CN114545821B (en) * | 2022-02-15 | 2023-06-06 | 四川九洲空管科技有限责任公司 | Terminal control system for collecting and playing audio of airborne passenger cabin |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4380561B2 (en) * | 2004-04-16 | 2009-12-09 | 株式会社デンソー | Driving assistance device |
| CN1315340C (en) * | 2004-07-21 | 2007-05-09 | 巴士在线（中国）有限公司 | Intelligent mobile communication multi-media audiovisual system for new bus |
| CN101783931A (en) * | 2009-01-21 | 2010-07-21 | 上海遥薇实业有限公司 | Bus continuous real-time mobile video monitoring system |
| CN102496294A (en) * | 2011-12-08 | 2012-06-13 | 中国矿业大学 | Multifunctional vehicle-mounted monitoring and scheduling terminal based on third-generation (3G) network |
| CN102651173B (en) * | 2012-05-23 | 2015-10-14 | 成都亿盟恒信科技有限公司 | Based on the big-dipper satellite monitoring safe driving system of 3G network |
-
2013
- 2013-07-22 CN CN201310311146.3A patent/CN103400495B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103400495A (en) | 2013-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103413429B (en) | A kind of public transport vehicle-mounted video monitoring based on davinci platform and dispatching management information system | |
| CN101447128B (en) | Special intelligent system for bus | |
| CN203055160U (en) | Intelligent bus scheduling system | |
| CN201199387Y (en) | Intelligent bus management system based on purple honeybee | |
| CN204423456U (en) | A kind of MPV (Multi-Purpose Vehicle) networking high definition drive recorder | |
| CN201444346U (en) | Smart device on bus | |
| CN106444547A (en) | Vehicular monitoring terminal and system based on GPRS communication and Beidou positioning | |
| CN103400495B (en) | Davinci platform-based bus multimedia play and video monitoring and scheduling system | |
| CN201556307U (en) | Automatic bus station reporting device based on wireless radiofrequency communication technology | |
| CN106898093A (en) | Public bicycles management system and method | |
| CN105373061A (en) | Vehicle real-time monitoring system based on BD2/GPS double-satellite positioning | |
| CN103413431B (en) | Based on the public transport multimedia of davinci platform, video monitoring and dispatching method | |
| CN202948558U (en) | Bus intelligent dispatching system based on mobile phone | |
| CN203054956U (en) | Wireless remote control door opening device | |
| CN202395900U (en) | Mobile urgent repair operation platform for urban distribution network | |
| CN103414874B (en) | Public transport video monitoring based on davinci platform and schedule management method | |
| CN103413432B (en) | A kind of public transport vehicle-mounted multimedia based on davinci platform and dispatching management information system | |
| CN103926916A (en) | Automobile information communication system | |
| CN106351142A (en) | Parking-space lock control system based on wireless communication | |
| CN103413430B (en) | Based on public transport multimedia and the schedule management method of davinci platform | |
| CN206235847U (en) | Vehicle monitor terminal and system based on GPRS communications and Big Dipper positioning | |
| CN106341148A (en) | Vehicle-mounted wireless communication system based on solar energy | |
| CN201698595U (en) | Intelligent bus station broadcaster | |
| CN201435147Y (en) | System for counting the number of passengers | |
| CN210381409U (en) | Intelligent lamp pole integrated main control board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |