CN103413429B - A kind of public transport vehicle-mounted video monitoring based on davinci platform and dispatching management information system - Google Patents
A kind of public transport vehicle-mounted video monitoring based on davinci platform and dispatching management information system Download PDFInfo
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Abstract
Based on public transport vehicle-mounted video monitoring and the dispatching management information system of davinci platform, be made up of power module (1100), main frame (1200) and operating terminal (1300) three part.Wherein, power module (1100) system-oriented provides power supply to export, and is communicated with main frame (1200) by digital-to-analog interface, mainly realizes the functions such as working state of system switching, Audio power amplifier; Main frame (1200), as the core of system, mainly completes audio, video data collection, digital signal processing, vehicle is located in real time, grid controls, radio communication controls and the function such as mobile unit management; Operating terminal (1300) is the man-machine interface towards vehicle driver, RS485 interface is used to communicate with main frame (1200), by correlation function button, Infrared remote controller and chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system.
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 vehicle-mounted video monitoring based on davinci platform and dispatching management information 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 public transport vehicle-mounted video monitoring and the dispatching management information system of davinci platform, it is characterized in that: system by power module 1100, main frame 1200 and operating terminal 1,300 three part form; Wherein, main frame 1200 is cores 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 Interfaces 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 coordinate chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system;
Described power module 1100 supports that direct current wide power inputs, 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 cores of system, adopt the framed structure of DaVinci (Leonardo da Vinci)+FPGA, mainly comprise signal processor 1201, video acquisition functional module 1202, audio collection functional module 1203, audio frequency reports functional module 1204, mobile unit interface module 1205, wireless mobile communications module 1206, Wi-Fi module 1207, GPS module 1208, Interface Expanding functional module 1209, SD card memory function module 1210 and system program memory module 1211, enforcement audio, video data gathers, 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 core cells of digital signal processing, is made up of DaVinci (Leonardo da Vinci)+FPGA; During system works, realize, to gathering the pre-service of video data and the communication connection between peripheral circuit and DaVinci (Leonardo da Vinci) that obtain, implementing encoding and decoding audio and video data process by DaVinci (Leonardo da Vinci), grid controlling and the control of peripheral each functional module primarily of FPGA;
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 to carry out Unified coding process by VPFE interface (VideoProcessingFront-End, Video processing front-end interface) again;
Described audio collection functional module 1203 is communicated with signal processor 1201 by ASP interface (AudioSerialPort, audio serial interface), supports the Real-time Collection of two-way audio;
Described audio frequency reports the conversion that functional module 1204 implements Text To Speech, is communicated, support three road voice broadcasts by ASP interface (AudioSerialPort, audio serial interface) with signal processor 1201; Wherein two-way coordinates the audio power amplifying circuit in power module 1100 to implement vehicle interior and outside voice broadcast, and the voice broadcast of the text message towards vehicle driver that transit operation center issues is implemented on the 3rd tunnel; The switching of three road voice-grade channels, switch and volume are controlled respectively by digital interface;
Described mobile unit interface module 1205 comprises three road sign accurate industrial series interface RS232 or RS485 and multi-path digital/analog interfaces, for the access of vehicle electronic device to implement the unified management of vehicle electronic device; Wherein, the type of each road serial line interface is RS232 or RS485, is configurable, 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 1206 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 1206 can the module of choice for use GPRS technology, also can the module of choice for use 3G technology; When wireless mobile communications module 1206 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 1207 is communicated with signal processor 1201 by USB interface, wireless mobile communications module 1206 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 1208 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 1206, 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 1209 is communicated with signal processor 1201 by USB interface, according to client's needs, provides multichannel type configurable industrial standard serial ports RS232/RS485, CAN interface and digital-to-analog interface;
Described SD card memory function module 1210 is communicated with signal processor 1201 by the SD card controller interface on DaVinci (Leonardo da Vinci);
Described system program memory module 1209 adopts Large Copacity NANDFLASH chip, is communicated with signal processor 1201 by the external memory interface on DaVinci (Leonardo da Vinci), storage system program; Realized the conversion of signal level by FPGA between NANDFLASH chip and DaVinci (Leonardo da Vinci);
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 and video playback capability module 1305; 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 passed through microcontroller 1303 receives infrared remote instruction with the I/O mouth of interrupt function, to realize arranging system state, system time, grid connection, volume etc. of calling out the stops and adjusting;
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 (SerialPeripheralInterface, Serial Peripheral Interface (SPI)), reads the IC card information of bus drivers;
Described video playback capability module 1305 is received from VPBE interface (VideoProcessingBack-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, a kind of public transport vehicle-mounted video monitoring based on davinci platform and dispatching management information system (hereinafter referred to as system), is characterized in that: system by power module 1100, main frame 1200 and operating terminal 1,300 three part form.Wherein, power module 1100 system-oriented provides power supply to export, and is communicated with main frame 1200 by digital-to-analog interface, realizes the functions such as working state of system switching, Audio power amplifier, power network control; Main frame 1200, as the core of system, mainly completes audio, video data collection, digital signal processing, vehicle is located in real time, grid controls, radio communication connects and the function such as mobile unit management; Operating terminal 1300 is the Man Machine Interfaces towards vehicle driver, by the transmission of the data between RS485 Interface realization and main frame 1200 and control signal etc., by the composite analog video signal that analog interface Receiving Host 1200 sends, by correlation function button, Infrared remote controller and chromatic liquid crystal screen, realize the man-machine interaction between vehicle driver and system.
Described power module 1100 supports that direct current wide power inputs, 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 cores of system, adopt the framed structure of DaVinci (Leonardo da Vinci)+FPGA, mainly comprise signal processor 1201, video acquisition functional module 1202, audio collection functional module 1203, audio frequency reports functional module 1204, mobile unit interface module 1205, wireless mobile communications module 1206, Wi-Fi module 1207, GPS module 1208, Interface Expanding functional module 1209, SD card memory function module 1210 and system program memory module 1211, enforcement audio, video data gathers, 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 core cells of digital signal processing, is made up of DaVinci (Leonardo da Vinci)+FPGA; During system works, realize, to gathering the pre-service of video data and the communication connection between peripheral circuit and DaVinci (Leonardo da Vinci) that obtain, implementing encoding and decoding audio and video data process by DaVinci (Leonardo da Vinci), grid controlling and the control of peripheral each functional module primarily of FPGA;
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 to carry out Unified coding process by VPFE interface (VideoProcessingFront-End, Video processing front-end interface) again;
Described audio collection functional module 1203 is communicated with signal processor 1201 by ASP interface (AudioSerialPort, audio serial interface), supports the Real-time Collection of two-way audio;
Described audio frequency reports the conversion that functional module 1204 implements Text To Speech, is communicated, support three road voice broadcasts by ASP interface (AudioSerialPort, 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 1205 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 1206 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 1206 can the module of choice for use GPRS technology, also can the module of choice for use 3G technology; When wireless mobile communications module 1206 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 1207 is communicated with signal processor 1201 by USB interface, wireless mobile communications module 1206 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 1208 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 1206, 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 1209 is communicated with signal processor 1201 by USB interface, according to client's needs, 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 1210 is communicated with signal processor 1201 by the SD card controller interface on DaVinci (Leonardo da Vinci);
Described system program memory module 1209 adopts Large Copacity NANDFLASH chip, is communicated with signal processor 1201 by the external memory interface on DaVinci (Leonardo da Vinci), storage system program; Realized the conversion of signal level by FPGA between NANDFLASH chip and DaVinci (Leonardo da Vinci);
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 and video playback capability module 1305; 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 passed through microcontroller 1303 receives infrared remote instruction with the I/O mouth of interrupt function, to realize arranging system state, system time, grid connection, volume etc. of calling out the stops and adjusting;
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 (SerialPeripheralInterface, Serial Peripheral Interface (SPI)), reads the IC card information of bus drivers;
Described video playback capability module 1305 is received from VPBE interface (VideoProcessingBack-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, this system of the 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 1205 and Interface Expanding functional module 1209, 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 1206 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 function button etc. relevant on 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 1208, 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 1204 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 1206 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 1204 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 1206 and audio frequency report functional module 1204, 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 carries out audio, video data collecting work by orientation such as video acquisition functional module 1202 and audio collection functional module 1203 couples of vehicle fronts, 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 public transport vehicle-mounted video monitoring and the dispatching management information system of davinci platform, 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 direct supply input, 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 (Leonardo da Vinci's chip)+FPGA, mainly comprise signal processor (1201), video acquisition functional module (1202), audio collection functional module (1203), audio frequency reports functional module (1204), mobile unit interface module (1205), wireless mobile communications module (1206), Wi-Fi module (1207), GPS module (1208), Interface Expanding functional module (1209), SD card memory function module (1210) and system program memory module (1211), enforcement audio, video data gathers, 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 (Leonardo da Vinci's 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 (VideoProcessingFront-End, Video processing front-end interface) again;
Described audio collection functional module (1203) is communicated with signal processor (1201) by ASP interface (AudioSerialPort, audio serial interface), supports the Real-time Collection of two-way audio;
Described audio frequency reports the conversion that functional module (1204) implements Text To Speech, by ASP interface (AudioSerialPort, 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 (1205) comprises three road sign accurate industrial series interface RS232 or RS485 and multi-path digital/analog interfaces, for the access of vehicle electronic device to implement the unified management of vehicle electronic device; Wherein, configuring each road serial line interface is 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 (1206) 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 (1206) can the module of choice for use GPRS technology, also can the module of choice for use 3G technology; When wireless mobile communications module (1206) 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 (1207) is communicated with signal processor (1201) by USB interface, wireless mobile communications module (1206) 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 (1208) is communicated with signal processor (1201) by UART interface, Real-time Collection vehicle location and velocity information in vehicle operation, coordinate wireless mobile communications module (1206), by mobile radio networks, the current vehicle position collected and velocity information are uploaded to transit operation central server in real time;
Described Interface Expanding functional module (1209) is communicated with signal processor (1201) by USB interface, according to client's needs, provide multichannel type configurable industrial standard serial ports RS232/RS485, CAN interface and digital-to-analog interface;
Described SD card memory function module (1210) is communicated with signal processor (1201) by the SD card controller interface on DaVinci chip;
Described system program memory module (1211) adopts Large Copacity NANDFLASH 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) and video playback capability module (1305); 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 (SerialPeripheralInterface, Serial Peripheral Interface (SPI)), reads the IC card information of bus drivers;
Described video playback capability module (1305) receives from VPBE interface (VideoProcessingBack-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)
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| CN105931477A (en) * | 2016-07-13 | 2016-09-07 | 合肥指南针电子科技有限责任公司 | Traffic safety management system |
| CN110716468A (en) * | 2019-10-18 | 2020-01-21 | 苏州乐雪信息科技有限公司 | Intelligent recreational vehicle touch control management system |
| CN112248946A (en) * | 2020-10-12 | 2021-01-22 | 安徽富煌科技股份有限公司 | Vehicle-mounted machine with tandem function |
| 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 |
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