CN102789718B - Automatic invigilation scoring device for random vehicle driving test process and realization method thereof - Google Patents

Abstract

The invention discloses an automatic invigilation scoring device for a random vehicle driving test process, and a realization method thereof. The device comprises a DSP (Digital Signal Processor) digital processing unit, an embedded MCU (Microprogrammed Control Unit) microcontroller, a program storage, a data storage, a core plate and an interface bottom plate, wherein the core plate is formed by an interface connector inserting piece, the DSP digital processing unit and the embedded MCU microcontroller are used as cores of the device, namely a hardware platform, the program storage on the core plate is a hardware carrier which is used for installing an operation system and application software, the data storage is used as a temporary data storage space which is necessary to be used during operation of the system, the data storage comprises an interface buffering area with an application program, and a plurality of interfaces including electrical equipment interface component circuits and mechanical interface connectors are arranged on the interface bottom plate. By using the device, and through the cooperative operation of hardware of an embedded Linux operation system and software which operates on an embedded operating system, the automatic invigilation scoring on the random vehicle driving test process can be realized.

Description

Automatic invigilation grading apparatus used in any vehicle pole exam process and implementation method

Technical field

The present invention relates to a kind of vehicle driver place drive skill examining device, particularly automatic invigilation grading apparatus used in any vehicle pole exam process and implementation method.

Background technology

At present, vehicle driver place driving efficiency is taken an examination in the post test system of place used, majority be all for the particular vehicle after repacking as examination vehicle object, and complete in conjunction with the software and hardware of PC computer.Do not need repacking can carry out the object of stake examination in order to realize to examining car, meeting in new standard allows any vehicle to carry out the requirement that stake is examined as examination vehicle, all, by gathering video scene image frame and carrying out analyzing and processing and obtain examination vehicle driving trace and status informations such as advancing, retreat, judge necessary corresponding foundation thereby obtain required scoring.

Obtain the means of these video scene images, although some is to obtain from network by web camera or video server, but majority is all to be obtained by the video capture card of assigning, that is to say it is all that hardware and software platform based on PC is realized in PC.The necessary information such as the movement locus for examination vehicle in examination process and deduction of points decision state, or extract by the PC software moving on PC hardware platform, leave PC hardware and software platform, just cannot be admitted to row scoring to stake and judge.

Owing to needing to consume a large amount of PC resources in image data processing process, particularly time resource, although therefore current PC arithmetic speed is very high, a PC also often can only be managed the examination process that a stake is examined, and is difficult to the management examination process that more than two and two stake is examined; The place post test system of these too busy to get away PCs, for the driver unit of training that uses or plan to use such place post test system, student also has to configure the operator of its requisite PC and PC in the time of training.

Summary of the invention

The object of this invention is to provide a kind of can set up one do not rely on PC and work alone stake examine training with examination automatic invigilation grading apparatus used in any vehicle pole exam process and implementation method; To solve the above-mentioned deficiency of prior art.

The technical scheme solving the problems of the technologies described above is: a kind of automatic invigilation grading apparatus used in any vehicle pole exam process, comprises core board and interface base plate;

Described core board comprises DSP digital processing unit, embedded MCU microcontroller, program storage, data-carrier store and interface connector plug-in unit;

Described DSP digital processing unit and embedded MCU microcontroller are as the center of device, it is hardware platform, wherein DSP digital processing unit is responsible for DAB and digital video to process, thereby obtain the information such as the various essential status datas of examination vehicle movement locus, embedded MCU microcontroller provides operating system platform, facilitates application development; Make the application program can be irrelevant with hardware device, reach the object of random scalability or function;

Program storage on core board is the hardware carrier for installing operating system and application software, and the ephemeral data storage space that must use when data-carrier store is system works, comprising the interface buffer that has application program;

On described interface base plate, be provided with including electrical apparatus interface components and parts circuit and mechanical interface connector with lower interface: the audio frequency IO interface of can answer cylinder and plug-in public address system, the hyperchannel input and output general-purpose interface of using for expanded function, connect the display screen interface of plug-in display, the 10/100M Ethernet interface being connected with ethernet device, connect the video input B interface of place video camera, connect the video input A interface of cloud mirror all-in-one 32, the RS-485 interface that carries out communication with the equipment with RS-485 interface, the RS-232 interface of carrying out communication with the equipment with RS-232 interface, the interface connector plug-in unit of interface base plate,

Between core board and interface base plate or be directly connected or connect by interface connector plug-in unit, in the time being directly connected between core board and interface base plate, be connected to the device signal of backplane interface, after corresponding interface treatment circuit is processed, be directly sent on core board; In the time connecting by interface connector plug-in unit between core board and interface base plate, corresponding being assembled together of interface connector plug-in unit of interface connector plug-in unit with interface base plate by core board between core board and interface base plate; Be connected to the device signal of backplane interface, after corresponding interface treatment circuit is processed, be sent on core board by the interface connector plug-in unit of interface base plate and the interface connector plug-in unit of core board respectively;

This device utilizes video input A interface, obtain by cloud mirror all-in-one the video image that examinee is carried out to identity discriminating, utilize video input B interface, by place video camera, stake examination process is carried out to real-time follow-up, the driving trace of car examined in record on the one hand, frame live view when record deduction of points is judged again on the other hand, examines score inquiry for examinee's stake image foundation is provided;

By audio frequency IO interface and plug-in public address system, in stake examination process, carry out voice message to examinee in time, make examinee can understand easily the procedural informations such as examination request, examination judgement content and result of determination; By audio input interface, momentarily carry out voice dialogue with the PC of long-distance on-line as required, facilitate field maintemance personnel and long-range PC operator to link up with voice;

Obtain the sensor signal of Carbarn by RS-232 interface or RS-485 interface, thereby the phenomenon such as grazing stake bar, vehicle body outlet occurring in examination process is judged;

By RS-485 interface or Ethernet interface and host computer networking, in time export identity in examinee's stake examination process to host computer and differentiate video, stake examination hall video, examine car movement locus coordinate, deduction of points judges and records picture, and examines the status informations such as car advances, retreats, stops, stop working and other and be designated as and need the data exported; By set network interface, can also accept various commander's instructions that host computer is assigned, carry out collaborative work with host computer;

This device also receives the sensor information on examination vehicle by the wireless communication module being connected with RS-232 interface or RS-485 interface, monitors at any time examination vehicle and examinee's operational circumstances.

Its further technical scheme is: described core board or the interface connector plug-in unit by the DSP digital processing unit encapsulating respectively, embedded MCU microcontroller, program storage, data-carrier store and core board form or be made up of the thick film circuit that above-mentioned components and parts integration packaging is formed or SOC (system on a chip) SoC I together; Or integrate by DSP digital processing unit, embedded MCU microcontroller and FPGA the SOC (system on a chip) SoC II forming and form, can also be formed by the integrate interface connector plug-in unit of the SOC (system on a chip) SoC III, program storage, data-carrier store and the core board that form of DSP digital processing unit, embedded MCU microcontroller.

Described by the networking of Ethernet interface and host computer, be adopt by wireless ethernet or the civilian power line modem of Ethernet a kind of mode among both or adopt two kinds of this modes that backup each other to realize simultaneously; Described by RS-485 interface and host computer networking, be to adopt universal serial bus or wireless data transmission equipment to realize.

Described by the onboard sensor information on the wireless communication module reception examination vehicle being connected with RS-232 interface or RS-485 interface, be realize by the Wireless Data Transmission modulator-demodular unit referred to as wireless data transmission equipment between onboard sensor or all after Ethernet modular converter, adopt again this mode of wireless ethernet to realize; The two can backup each other or only adopt one of them.

Its further technical scheme be: this device is utilized as the external unit that hyperchannel input and output general-purpose interface that expanded function uses connects and comprises: plug-in keyboard/touch-screen, heater-driven module, mass storage hard disk, flash disk, ambient temperature and humidity sensor, analog quantity and switching value input/output device, printer output equipment and/or MMC/SD storage card, said external equipment is selected wherein a kind, 2 kinds or multiple as required.

The hyperchannel input and output general-purpose interface of this device is also reserved with the interface being connected for buttons such as " start/ends " of training and examination operation, by plug-in wireless data transmission equipment, can also be connected with the button such as wireless " start/end " of installing on car.

This device is connected the additional plug-in display arranging and is connected plug-in keyboard/touch-screen by hyperchannel input and output general-purpose interface by display screen interface in this locality, accepts local operator and carries out the basic operations such as various corresponding settings, inquiry by plug-in keyboard/touch-screen.

Its another relevant technical scheme is: a kind of method that any vehicle pile examination process automatic monitoring examination is divided that realizes, it is the automatic invigilation grading apparatus used in any vehicle pole exam process that utilizes the present invention above-mentioned, by the machine vision of multimedia video processor DSP and ccd video camera formation and in conjunction with digitizing switch amount collector, the training that the place stake of vehicle driver place driving efficiency examination is examined and examination process are carried out invigilator automatically and are judged with scoring, jointly to realize with the collaborative work of the software moving on embedded OS by the hardware of operation built-in Linux operating system, the module that described application software comprises has: communication receiving/transmission device, data volume collector, data backup device, analog quantity acquiring device, achievement scorer, audio signal sample device, vehicle movement information acquisition device, video signal collective device, collector of switching value, operator's man-machine interface, character Voice decoder, switchgear actuator, digital device driver, data link and data maintenance device, each module is all contained on built-in Linux operating system,

The effect of described communication receiving/transmission device is to network with host computer or the miscellaneous equipment with corresponding communications protocol;

Described digital data acquisition device is connected with built-in Linux operating system and communication receiving/transmission device respectively, and its effect is the physical quantity information gathering after digitizing;

Described data backup device for preserve driver's total marks of the examination and examination process other think need retain information;

Described analog quantity acquiring device gathers analog quantity by analog to digital conversion interface;

Described achievement scorer carries out Analysis And Evaluation to the information from examination vehicle and examination hall, and provides final total marks of the examination;

Described audio signal sample device converts digital audio-frequency data by audio input interface to simulated audio signal;

Described video signal collective device is obtained digital of digital video data and is passed to vehicle movement information acquisition device by video input interface;

Described collector of switching value is by the parallel direct read switch amount of input interface status information;

Described vehicle movement information acquisition device is by obtaining the Moving Objects such as motion state and the movement locus information of examination vehicle to the analysis of digital of digital video data;

Described operator's man-machine interface is accepted site operation people's instruction and is explained and carry out, and also tells this site operation people execution result simultaneously;

Described character Voice decoder completes a character cue and converts voice message signal to, and drives plug-in public address system by audio output interface, makes tester can obtain with ear prompting or the requirement of this scoring apparatus by loudspeaker;

Described switchgear actuator is by the direct output switch amount of parallel output interface device drives signal;

Described digital device driver is connected with built-in Linux operating system and communication receiving/transmission device respectively, comes to carry out communication with driven external unit by universal input outputting communication interface;

Described data link is connected with built-in Linux operating system and communication receiving/transmission device respectively, and the data that need to exchange by communication network are carried out to modulation and demodulation;

Described data maintenance device is connected with built-in Linux operating system and communication receiving/transmission device respectively, obtains the initialization datas such as examination standards of grading and other regulation from host computer or mobile memory.

Total workflow of the method is:

S101: system initialization, checks software and hardware, and needed the variable of initial value to give initial value;

S102: guide embedded OS and load an automatic monitoring examination point involved application program from program storage;

A s103: after application program operation, and constantly judge whether before examination to need to examine carrying out stake? if need stake to examine, enter step s104, if do not need stake to examine, directly enter s105;

S104: start to enter s105 after stake examination;

S105: before examination or after finishing, pending following several attended operations such as enter in stake:

Enter operating system environment,

Place signal self-inspection,

Examination region picture profile is set,

Call in examination judgment criteria and other initialization data from host computer or movable storage device,

Video parameter is set, comprises port, brightness, contrast, colourity and saturation degree,

Speech engine is set, the one among selection voice IC, voice document or sound bank;

S106: above-mentioned work is just reviewed and validate and exited after all finishing? if do not exit, return to s103, if exit, enter s107;

S107: shutdown system.

Described s104 stake examination flow process comprises:

S201: call in initialization data necessary while examination;

S202: check and have examinee information? be labeled as if having and take an examination and enter S203, if without being labeled as and training and enter S205,

S203: examination starts front examinee's identity discriminating of first carrying out;

S204: confirmation identity authentication is passed through? if by entering S205, otherwise return to S202;

S205: start following execution instruction to gather and analyze:

1. have or not the key informations such as local start/end?

2. have or not the key informations such as the start/end from wireless data transmission equipment?

3. have or not " start/end " from PC obtained by Ethernet interface to carry out command information

4. have or not " start/end " obtained by Vision Builder for Automated Inspection etc. to carry out command information

If one of above information exists, enter S206, if do not have, return to S202;

S206: examination process monitoring, enters S207 after having monitored;

S207: have or not the information of exiting? if enter S208, otherwise return to S202;

S208: exit stake and examine program.

Described S206: examination process monitoring program comprises:

S301: voice message examination starts;

S302: carry out in real time place signal and examination hall video acquisition and send host computer to;

S303: examination process analysis procedure analysis and achievement are judged, utilize the place signal and the video data that collect, analyzes examination process, and the judgement of achieving the result;

S304: transmit Analysis And Evaluation result to host computer;

S305: whether current exercise or examination process finish or complete finish or complete, and enter S306, otherwise return to S302 if determine;

S306: be confirmed whether it is exercise? if exercise, enters S308, otherwise enters S307;

S307: save data: preserve after total marks of the examination and other are appointed as the information that must preserve and enter S308;

S308: exit examination process monitoring.

S303 in described examination process monitoring program: process analysis procedure analysis and achievement determination flow comprise:

S401: obtain place signal and examination hall vedio data;

S402: driving trace and the direction of determining vehicle;

S403: judge that whether the driving trace of vehicle and direction qualified? enter S405 if qualified, if defective, enter S404;

S404: frame picture and the result of determination while recording defective judgement;

S405: enter S406 after the result of determination with voice message examination;

S406: output Analysis And Evaluation result.

In described stake examination flow process, S203 examinee's identity identification flow comprises:

S501: obtain identity and differentiate vedio data, the identity discriminating video image from video input A interface is analyzed and processed;

S502: from motion tracking examinee head portrait;

S503: form photo sticker;

S504: the identity of exporting attached photo sticker is differentiated video.

Owing to adopting said structure, the present invention's automatic invigilation grading apparatus used in any vehicle pole exam process and implementation method have following beneficial effect:

1, a stake that does not rely on PC and work alone be can set up and training and the system of taking an examination examined;

2,, in the time of PC or network communication fault, can not affect examinee and proceed training and the examination that stake is examined;

3, make a PC can integrated management training and examination process that more than two and two stake is examined;

4, be convenient to all kinds of existing places post test system and upgrade efficiently, transform under the condition that does not change its original base structure, can improve largely the service efficiency of place post test system;

5, to using the place post test system of this device, more convenient in system maintenance, faster;

6, owing to having used the Operation and management platform of operating system as application software, therefore the upgrading of function and aspect of performance is all more convenient, even if that is to say that new Examination Rule appearance can not cause the similar scoring apparatus of overlapping investment yet;

7, owing to having applied machine vision theory and technology, therefore, without customizing particular vehicle as examination vehicle, that is to say, vehicle also can be directly used in as examination vehicle and carry out a driving efficiency of examining a project examination not through any repacking in the situation that arbitrarily;

8, owing to adopting known common hardware to build application platform, user can buy and obtain more easily on market, and therefore Choice Method scope is larger and comparatively flexible and changeable, makes the after-sales service of hardware system more secure, troubleshooting time is short, and maintenance cost is low.

Below, a kind of automatic invigilation grading apparatus used in any vehicle pole exam process to the present invention and the technical characterictic of implementation method are further described in conjunction with the accompanying drawings and embodiments.

Brief description of the drawings

Fig. 1: core board structural representation;

Fig. 2-1: pass through interface connector plug-in unit annexation schematic diagram between interface base plate II a interface structure and interface base plate II a and core board I a;

Fig. 2-2: core board I b is directly installed on the structural representation on interface base plate II b;

Fig. 3: the connection diagram of interface base plate and peripheral hardware;

Fig. 4: the connection diagram of built-in Linux operating system and application software;

Fig. 5: start stop system process flow diagram;

Fig. 6: stake examination process flow diagram:

Fig. 7: examination process monitoring process flow diagram;

Fig. 8: examination process analysis procedure analysis and achievement decision flowchart;

Fig. 9: examination personnel identity identification flow figure.

In figure:

I, I a, I b-core board, I a – is with the core board of interface connector plug-in unit, and I b – is the core board with interface connector plug-in unit not; II, II a, II b-interface base plate, II a-with the interface base plate of interface connector plug-in unit, II b-not interface base plate with interface connector plug-in unit; III-man-machine interface, the ccd video camera of IV-composition machine vision and the connector of base plate;

101-DSP digital processing unit, 102-embedded MCU microcontroller, 103-program storage, 104-data-carrier store, 105, the interface connector plug-in unit of 106-core board;

201-audio frequency IO interface, 202-hyperchannel input and output general-purpose interface, 203-display screen interface, 204-10/100M Ethernet interface, 205-video input B interface, 206-video input A interface, 207-RS-485 interface, 208-RS-232 interface, 209, the interface connector plug-in unit of 210-interface base plate;

External equipment comprises:

31-place video camera, 32-cloud mirror all-in-one, 33-MMC/SD storage card, 34-printer output equipment, 35-analog quantity and switching value input/output device, 36-ambient temperature and humidity sensor, the USB device such as 37-flash disk, 38-mass storage hard disk, 39-IIC and SPI and CAN bus apparatus interface, 40-heater-driven module, plug-in keyboard/the touch-screen of 41-, the plug-in public address system of 42-, the plug-in display of 43-, 44-ethernet device, 45-has the equipment of RS-232 interface.

Software configuration comprises:

51-communication receiving/transmission device, 52-digital data acquisition device, 53-data backup device; 54-analog quantity acquiring device, 55-achievement scorer, 56-audio signal sample device, 57-video signal collective device, 58-collector of switching value, 59-vehicle movement information acquisition device, 60-operator's man-machine interface, 61-character Voice decoder, 62-switchgear actuator, 63-digital device driver, 64-data link, 65-data maintenance device.

Abbreviation and meaning thereof in literary composition:

DSP-Digital Signal Processing, i.e. digital signal processor;

MCU-Micro Control Unit), i.e. microcontroller, is also called as single-chip microcomputer habitually;

FPGA-Field-Programmable Gate Array, i.e. field programmable gate array;

CPLD-Complex Programmable Logic Device, i.e. CPLD;

SoC-Systems-on-a-Chip, SOC (system on a chip) SoC comprises three kinds, the first refers to by DSP digital processing unit, embedded MCU microcontroller and necessary data-carrier store and program storage and is jointly packaged together and a kind of combined type integrated circuit (IC) chip or the thick film circuit that form, is denoted as: SOC (system on a chip) SoC I;

The second refers to by DSP digital processing unit, embedded MCU microcontroller and FPGA and integrates the integrated circuit (IC) chip forming, is denoted as: SOC (system on a chip) SoC II, as TMS320DM6446 processor;

The third refers to by DSP digital processing unit, the embedded MCU microcontroller SOC (system on a chip) SoC III forming that integrates.

Embodiment

Embodiment mono-:

A kind of automatic invigilation grading apparatus used in any vehicle pole exam process, comprises core board I and interface base plate II;

Described core board I be by DSP digital processing unit 101, embedded MCU microcontroller 102 integrate the SOC (system on a chip) SoC III that forms ( as TMS320DM6446), the core board I a of interface connector plug-in unit 105,106 compositions of program storage 103, data-carrier store 104 and core board, this core board I a is an independent PCB circuit board (referring to Fig. 1);

Described DSP digital processing unit 101 and embedded MCU microcontroller 102 are as the center of device, i.e. hardware platform; Wherein DSP digital processing unit 101 is responsible for DAB and digital video to process, thereby obtains the information such as the various essential status datas of examination vehicle movement locus; Embedded MCU microcontroller 102 is to provide operating system platform, facilitate application development, make the application program can be irrelevant with hardware device, reach the object of random scalability or function, to can adapt to better constantly corrigendum or the Examination Rate who revises and the requirement of administrative standard;

Program storage 103 on core board I a is the hardware carriers for installing operating system and application software, and the ephemeral data storage space that must use when data-carrier store 104 is system works, comprising the interface buffer that has application program;

Interface base plate II a in described interface base plate II, this interface base plate II a is also an independent PCB circuit board, on it, be provided with including electrical apparatus interface components and parts circuit and mechanical interface connector with lower interface: the audio frequency IO interface 201 of can answer cylinder and plug-in public address system 42, the hyperchannel input and output general-purpose interface 202 of using for expanded function, connect the display screen interface 203 of plug-in display 43, the 10/100M Ethernet interface 204 being connected with ethernet device 44, connect the video input B interface 205 of place video camera 31, connect the video input A interface 206 of cloud mirror all-in-one 32, the RS-485 interface 207 that carries out communication with the equipment with RS-485 interface, the RS-232 interface 208 of carrying out communication with the equipment 45 with RS-232 interface, the interface connector plug-in unit 209 of interface base plate, 210,

Between core board I a and interface base plate II a by the interface connector plug-in unit 105,106 of core board and the interface connector plug-in unit of interface base plate 209,210 corresponding being assembled together (referring to Fig. 2-1); Be connected to the device signal of backplane interface, after corresponding interface treatment circuit is processed, be sent on core board I a by the interface connector plug-in unit 209,210 of interface base plate and the interface connector plug-in unit 105,106 of core board respectively;

This device utilizes video input A interface 206, obtain examinee is carried out to the video image needing when identity is differentiated by cloud mirror all-in-one 32, utilize video input B interface 205, by place video camera 31, stake examination process is carried out to real-time follow-up, obtain on the one hand the driving trace of examining car, a frame live view can obtain again on the other hand deduction of points judgement time, examines score inquiry for examinee's stake image foundation is provided;

By audio frequency IO interface 201 and plug-in public address system 42, in stake examination process, carry out voice message to examinee in time, make examinee can understand easily the procedural informations such as examination request, examination judgement content and result of determination; By audio input interface, momentarily carry out voice dialogue with the PC of long-distance on-line as required, facilitate field maintemance personnel and long-range PC operator to link up with voice;

Obtain the sensor signal of Carbarn by RS-232 interface 208 or RS-485 interface 207, thereby the phenomenon such as grazing stake bar, vehicle body outlet occurring in examination process is judged;

By RS-485 interface 207 or Ethernet interface 204 and host computer networking, in time to identity in host computer output examinee stake examination process differentiate video, stake examination hall video, examine car movement locus coordinate, deduction of points judges and records picture and examine the status informations such as car advances, retreats, stops, stop working and other is designated as and needs the data that export; By set network interface, can also accept various commander's instructions that host computer is assigned, carry out collaborative work with host computer.

This device also can receive the sensor information on examination vehicle by the wireless communication module being connected with RS-232 interface 208 or RS-485 interface 207, monitors at any time examination vehicle and examinee's operational circumstances;

The external unit that this device connects by the hyperchannel input and output general-purpose interface 202 of using for expanded function comprises: plug-in keyboard/touch-screen 41, heater-driven module 40, mass storage hard disk 38, flash disk 37, ambient temperature and humidity sensor 36, analog quantity and switching value input/output device 35, printer output equipment 34 and/or MMC/SD storage card 33, said external equipment is selected wherein a kind, 2 kinds or multiple as required; For example: according to the measured value of ambient temperature and humidity sensor 36, carry out dehumidifying work by heater-driven module 40, ensure still can normally work under high humidity environment; In addition, this hyperchannel input and output general-purpose interface 202 arranges in order to adapt to several functions expansion, in the time not needing to expand some function, can not reserve its corresponding interface.

This device also can be connected the additional plug-in display 43 arranging and is connected plug-in keyboard/touch-screen 41 by hyperchannel input and output general-purpose interface 202 by display screen interface 203 in this locality, accepts local operator and carries out the basic operations such as various corresponding settings, inquiry by plug-in keyboard/touch-screen 41;

This device also can receive the sensor information on examination vehicle by the wireless communication module being connected with RS-232 IO interface 208 or RS-485 IO interface 207, monitors at any time examination vehicle and examinee's operational circumstances; Described by the onboard sensor information on the wireless communication module reception examination vehicle being connected with RS-232 IO interface 208 or RS-485 IO interface 207, be realize by the Wireless Data Transmission modulator-demodular unit referred to as wireless data transmission equipment between onboard sensor or all after Ethernet modular converter, adopt again this mode of wireless ethernet to realize; The two can backup each other or only adopt one of them.

Described by Ethernet interface 204 and host computer networking, be adopt by wireless ethernet or the civilian power line modem of Ethernet a kind of mode among both or adopt two kinds of this modes that backup each other to realize simultaneously; Described by RS-485 interface 207 and host computer networking, adopt universal serial bus or wireless data transmission equipment to realize.

As the one conversion of the embodiment of the present invention, described core board I can also be by the DSP digital processing unit 101 encapsulating respectively, embedded MCU microcontroller 102, program storage 103, the interface connector plug-in unit 105,106 of data-carrier store 104 and core board forms or is made up of the thick film circuit that above-mentioned components and parts integration packaging is formed or SOC (system on a chip) SoC I together; Or integrate the integrated circuit that forms or thick film circuit-SOC (system on a chip) SoC II forms by DSP digital processing unit, embedded MCU microcontroller and FPGA; Connection between core board I and interface base plate II also can be omitted the interface connector plug-in unit 209,210 of interface base plate, and SOC (system on a chip) SoC I or SOC (system on a chip) SoC II are directly assemblied in interface base plate II;

As the one conversion of the embodiment of the present invention, the DSP digital processing unit 101 in core board I, embedded MCU microcontroller 102, program storage 103, data-carrier store 104 can also be welded direct in interface base plate II and form individual pcb board; Or will be welded direct to upper individual pcb board (referring to Fig. 2-2) that forms of interface base plate II b combined into 1 SOC (system on a chip) SoC III (as TMS320DM6446), program storage 103, the data-carrier store 104 forming by DSP digital processing unit 101, embedded MCU microcontroller 102, now, be connected to the device signal of the interface of interface base plate II b, after corresponding interface treatment circuit is processed, be directly sent on core board I b by interface base plate respectively.

DSP can be the C6000 series multimedia chip TMS320DM642 of the TI of TIX, also can be the multimedia DSP of other brand, embedded microcontroller MCU can be the product of ARM series A RM9 or ARM11 or other company, the DSP of first-selection of the present invention is TMS320DM6446, it is embedded ARM9 microcontroller, can move built-in Linux or embedded Windows CE.

Work alone in order not rely on host computer, also be reserved with the interface being connected for buttons such as " start/ends " of training and examination operation by hyperchannel input and output general-purpose interface 202, by plug-in wireless data transmission equipment, can also be connected with buttons such as wireless " start/ends " of installing on car, facilitate examinee to train and take an examination; Under normal circumstances, button signal such as this " start/ends ", is raw from movable property by observing the process in examination vehicle turnover examination district by Vision Builder for Automated Inspection, that is to say can not want operate manually good.

The ethernet device 44 that Ethernet interface 204 can connect generally refers to one of following equipment having Ethernet interface: router, switch, ADSL Modem, civilian power line modem, wireless transceiver, wireless ethernet equipment, PC.

Mass storage mainly refers to hard disk and flash disk, be mainly used to storing multimedia and some initiation parameter files, the video monitoring image of the audio file that voice message uses as carried out, examinee's discriminating image, examination process, examination region picture profile parameters, examination judgment criteria, voice document and sound bank etc., if do not need these multi-medium datas and initiation parameter file, or manage these multi-medium datas and initiation parameter by the host computer being associated on network, can not need to be arranged on this automatic scoring device; Similarly, when those external units that can connect are unwanted time, can dispense and needn't be installed on this automatic scoring device.

Embodiment bis-:

A kind of method that any vehicle pile examination process automatic monitoring examination is divided that realizes, to utilize automatic invigilation grading apparatus used in any vehicle pole exam process described in embodiment mono-to realize the method to any vehicle pile examination process automatic monitoring examination point, it is by the machine vision of multimedia video processor DSP and ccd video camera formation and in conjunction with digitizing switch amount collector, the training that the place stake of vehicle driver place driving efficiency examination is examined and examination process are carried out invigilator automatically and are judged with scoring, jointly to realize with the collaborative work of the software moving on embedded OS by the hardware of operation built-in Linux operating system, the module that described application software comprises has: communication receiving/transmission device 51, data volume collector 52, data backup device 53, analog quantity acquiring device 54, achievement scorer 55, audio signal sample device 56, video signal collective device 57, collector of switching value 58, vehicle movement information acquisition device 59, operator's man-machine interface 60, character Voice decoder 61, switchgear actuator 62, digital device driver 63, data link 64 and data maintenance device 65, each module is all contained in (referring to Fig. 4) on built-in Linux operating system,

The effect of described communication receiving/transmission device 51 is to network with host computer or the miscellaneous equipment with corresponding communications protocol;

Described digital data acquisition device 52 is connected with built-in Linux operating system and communication receiving/transmission device 51 respectively, and its effect is the physical quantity information gathering after digitizing;

Described data backup device 53 for preserve driver's total marks of the examination and examination process other think need retain information;

Described analog quantity acquiring device 54 gathers analog quantity by analog to digital conversion interface;

Described achievement scorer 55 carries out Analysis And Evaluation to the information from examination vehicle and examination hall, and provides final total marks of the examination;

Described audio signal sample device 56 converts digital audio-frequency data by audio input interface to simulated audio signal;

Described video signal collective device 57 is obtained digital of digital video data and is passed to vehicle movement information acquisition device 59 by video input interface;

Described collector of switching value 58 is by the parallel direct read switch amount of input interface status information;

Described vehicle movement information acquisition device 59 is by obtaining the Moving Objects such as motion state and the movement locus information of examination vehicle to the analysis of digital of digital video data;

Described operator's man-machine interface 60 is accepted site operation people's instruction and is explained and carry out, and also tells this site operation people execution result simultaneously;

Described character Voice decoder 61 completes a character cue and converts voice message signal to, and drives plug-in public address system by audio output interface, makes tester can obtain with ear prompting or the requirement of this scoring apparatus by loudspeaker;

Described switchgear actuator 62 is by the direct output switch amount of parallel output interface device drives signal;

Described digital device driver 63 is connected with built-in Linux operating system and communication receiving/transmission device 51 respectively, comes to carry out communication with driven external unit by universal input outputting communication interface;

Described data link 64 is connected with built-in Linux operating system and communication receiving/transmission device 51 respectively, and the data that need to exchange by communication network are carried out to modulation and demodulation;

Described data maintenance device 65 is connected with built-in Linux operating system and communication receiving/transmission device 51 respectively, obtains the initialization datas such as examination standards of grading and other regulation from host computer or mobile memory.

The application software of the present invention taking (SuSE) Linux OS as operation platform, i.e. stake is examined the Main Function of program and is:

1, identity discriminating video image is analyzed and processed, from motion tracking examinee head portrait, form photo sticker, and the video image with photo sticker is outputed in PC, so that staff carries out identity discriminating more fast to examinee.

2, Carbarn video image is analyzed and processed, examine car driving trace from motion tracking, recording track coordinate, determine whether travel direction is reversing, simultaneously in conjunction with place signal, in real time examination result is judged, once occur that examination is defective, instant recording one frame live view.

3, in the time of exercise, according to Carbarn video image, by machine vision functional module, automatically exercise vehicles while passing start position is carried out to real time monitoring identification, so that still do not affect student's training that has simulated tests at divorced from computer with without anyone action button in the situation that.

4, combine with ccd video camera and video image digital collection system, form digital machine vision system, realize the examination in place or training vehicle are accurately followed the tracks of, obtain vehicle operating direction and position coordinates, form vehicle driving trace curve, and identification is to start examination or for examination finishes, provide one to start and the necessary signal such as end to examination process monitoring module.

5, for post test system provides essential man-machine interface, make this scoring apparatus realize networking and communication with the external unit including host computer well, for field maintemance is provided convenience, can accept with open arms field staff's operation, by voice module, make driver can understand in time own current driving efficiency and process status.

Total workflow (referring to Fig. 5) of the method that described realization divides any vehicle pile examination process automatic monitoring examination is:

S101: system initialization, checks software and hardware, and needed the variable of initial value to give initial value;

S102: guide embedded OS and load automatic monitoring examination point involved application program from program storage 103;

A s103: after application program operation, and constantly judge whether before examination to need to examine carrying out stake? if need stake to examine, enter step s104, if do not need stake to examine, directly enter s105;

S104: start to enter s105 after stake examination;

S105: before examination or after finishing, pending following several attended operations such as enter in stake:

Enter operating system environment,

Place signal self-inspection,

Examination region picture profile is set,

Call in examination judgment criteria and other initialization data from host computer or movable storage device,

Video parameter is set, comprises port, brightness, contrast, colourity and saturation degree,

Speech engine is set, the one among selection voice IC, voice document or sound bank;

S106: above-mentioned work is just reviewed and validate and exited after all finishing? if do not exit, return to s103, if exit, enter s107;

S107: shutdown system.

The present invention realizes in total workflow of the method that any vehicle pile examination process automatic monitoring examination is divided, and described s104 stake examination flow process (referring to Fig. 6) comprising:

S201: call in initialization data necessary while examination;

S202: check and have examinee information? be labeled as if having and take an examination and enter S203, if without being labeled as and training and enter S205,

S203: examination starts front examinee's identity discriminating of first carrying out;

S204: confirmation identity authentication is passed through? if by entering S205, otherwise return to S202;

S205: start following execution instruction to gather and analyze:

1. have or not the key informations such as local start/end?

2. have or not the key informations such as the start/end from wireless data transmission equipment?

3. have or not " start/end " from PC obtained by Ethernet interface 204 to carry out command information

4. have or not " start/end " obtained by Vision Builder for Automated Inspection etc. to carry out command information

If one of above information exists, enter S206, if do not have, return to S202;

S206: examination process monitoring, enters S207 after having monitored;

S207: have or not the information of exiting? if enter S208, otherwise return to S202;

S208: exit stake and examine program.

In the stake examination flow process of the method that described realization divides any vehicle pile examination process automatic monitoring examination, described S206: examination process monitoring program (referring to Fig. 7) comprising:

S301: voice message examination starts;

S302: carry out in real time place signal and examination hall video acquisition and send host computer to;

S303: examination process analysis procedure analysis and achievement are judged, utilize the place signal and the video data that collect, analyzes examination process, and the judgement of achieving the result;

S304: transmit Analysis And Evaluation result to host computer;

S305: whether current exercise or examination process finish or complete finish or complete, and enter S306, otherwise return to S302 if determine;

S306: be confirmed whether it is exercise? if exercise, enters S308, otherwise enters S307;

S307: save data: preserve after total marks of the examination and other are appointed as the information that must preserve and enter S308;

S308: exit examination process monitoring.

In described examination process monitoring program, described S303: examination process analysis procedure analysis and achievement determination flow (referring to Fig. 8) comprising:

S401: obtain place signal and examination hall vedio data;

S402: driving trace and the direction of determining vehicle;

S403: judge that whether the driving trace of vehicle and direction qualified? enter S405 if qualified, if defective, enter S404;

S404: frame picture and the result of determination while recording defective judgement;

S405: enter S406 after the result of determination with voice message examination;

S406: output Analysis And Evaluation result.

The present invention realizes in total workflow of the method that any vehicle pile examination process automatic monitoring examination is divided, and described S203 examinee's identity identification flow (referring to Fig. 9) comprising:

S501: obtain identity and differentiate vedio data, the identity discriminating video image from video input A interface is analyzed and processed;

S502: from motion tracking examinee head portrait;

S503: form photo sticker;

S504: the identity of exporting attached photo sticker is differentiated video.

Claims (12)

1. an automatic invigilation grading apparatus used in any vehicle pole exam process, is characterized in that: this device comprises core board (I) and interface base plate (II);

Described core board (I) comprises DSP digital processing unit (101), embedded MCU microcontroller (102), program storage (103), data-carrier store (104) and interface connector plug-in unit (105), (106);

Described DSP digital processing unit (101) and embedded MCU microcontroller (102) are as the center of device, it is hardware platform, wherein DSP digital processing unit (101) is responsible for DAB and digital video to process, thereby obtain the various essential status data information of examination vehicle movement locus, embedded MCU microcontroller (102) provides operating system platform, facilitate application development, make the application program can be irrelevant with hardware device, reach the object of random scalability or function;

Program storage (103) on core board (I) is the hardware carrier for installing operating system and application software, the ephemeral data storage space that data-carrier store (104) must use while being system works, comprising the interface buffer that has application program;

On described interface base plate (II), be provided with including electrical apparatus interface components and parts circuit and mechanical interface connector with lower interface: the audio frequency IO interface (201) of can answer cylinder and plug-in public address system (42), the hyperchannel input and output general-purpose interface (202) of using for expanded function, connect the display screen interface (203) of plug-in display (43), the 10/100M Ethernet interface (204) being connected with ethernet device (44), connect the video input B interface (205) of place video camera (31), connect the video input A interface (206) of cloud mirror all-in-one (32), the RS-485 interface (207) that carries out communication with the equipment with RS-485 interface, the RS-232 interface (208) of carrying out communication with the equipment (45) with RS-232 interface,

Between core board and interface base plate or be directly connected or connect by interface connector plug-in unit, in the time being directly connected between core board and interface base plate, be connected to the device signal of backplane interface, after corresponding interface treatment circuit is processed, be directly sent on core board; In the time connecting by interface connector plug-in unit between core board and interface base plate, corresponding being assembled together of interface connector plug-in unit (209,210) of interface connector plug-in unit (105,106) with interface base plate by core board between core board and interface base plate; Be connected to the device signal of backplane interface, after corresponding interface treatment circuit is processed, be sent on core board by the interface connector plug-in unit (209,210) of interface base plate and the interface connector plug-in unit (105,106) of core board respectively;

This device utilizes video input A interface (206), obtain by cloud mirror all-in-one (32) video image that examinee is carried out to identity discriminating, utilize video input B interface (205), by place video camera (31), stake examination process is carried out to real-time follow-up, the driving trace of car examined in record on the one hand, frame live view when record deduction of points is judged again on the other hand, examines score inquiry for examinee's stake image foundation is provided;

By audio frequency IO interface (201) and plug-in public address system (42), in stake examination process, carry out voice message to examinee in time, make examinee can understand easily examination request, examination judgement content and result of determination procedural information; By audio frequency IO interface (201), momentarily carry out voice dialogue with the PC of long-distance on-line as required, facilitate field maintemance personnel and long-range PC operator to link up with voice;

Obtain the sensor signal of Carbarn by RS-232 interface (208) or RS-485 interface (207), thereby the grazing stake bar occurring in examination process, vehicle body outlet phenomenon are judged;

By RS-485 interface (207) or Ethernet interface (204) and host computer networking, in time export identity in examinee's stake examination process to host computer and differentiate video, stake examination hall video, examine car movement locus coordinate, deduction of points judges and records picture, and examine that car advances, retreats, stops, flameout state information and other be designated as the data that need output; By set network interface, can also accept various commander's instructions that host computer is assigned, carry out collaborative work with host computer;

This device also receives the sensor information on examination vehicle by the wireless communication module being connected with RS-232 interface (208) or RS-485 interface (207), monitors at any time examination vehicle and examinee's operational circumstances.

2. automatic invigilation grading apparatus used in any vehicle pole exam process according to claim 1, is characterized in that: described core board (I) or formed or be made up of the thick film circuit that above-mentioned components and parts integration packaging is formed or SOC (system on a chip) SoC I together by the interface connector plug-in unit (105,106) of the DSP digital processing unit (101) encapsulating respectively, embedded MCU microcontroller (102), program storage (103), data-carrier store (104) and core board; Or integrate by DSP digital processing unit, embedded MCU microcontroller and FPGA the SOC (system on a chip) SoC II forming and form, can also be formed by the integrate interface connector plug-in unit (105,106) of the SOC (system on a chip) SoC III, program storage (103), data-carrier store (104) and the core board that form of DSP digital processing unit (101), embedded MCU microcontroller (102).

3. automatic invigilation grading apparatus used in any vehicle pole exam process according to claim 1, it is characterized in that: described by the networking of Ethernet interface (204) and host computer, be adopt by wireless ethernet or the civilian power line modem of Ethernet a kind of mode among both or adopt two kinds of this modes that backup each other to realize simultaneously; Described by RS-485 interface (207) and host computer networking, be to adopt universal serial bus or wireless data transmission equipment to realize.

4. automatic invigilation grading apparatus used in any vehicle pole exam process according to claim 1, it is characterized in that: described by the onboard sensor information on the wireless communication module reception examination vehicle being connected with RS-232 IO interface (208) or RS-485 IO interface (207), be realize by the Wireless Data Transmission modulator-demodular unit referred to as wireless data transmission equipment between onboard sensor or all after Ethernet modular converter, adopt again this mode of wireless ethernet to realize; The two can backup each other or only adopt one of them.

5. automatic invigilation grading apparatus used in any vehicle pole exam process according to claim 1, it is characterized in that: this device is utilized as the external unit that hyperchannel input and output general-purpose interface (202) that expanded function uses connects and comprises: plug-in keyboard/touch-screen (41), heater-driven module (40), mass storage hard disk (38), flash disk (37), ambient temperature and humidity sensor (36), analog quantity and switching value input/output device (35), printer output equipment (34) and/or MMC/SD storage card (33), said external equipment is selected wherein a kind as required, 2 kinds or multiple.

6. automatic invigilation grading apparatus used in any vehicle pole exam process according to claim 1, it is characterized in that: the hyperchannel input and output general-purpose interface (202) of this device is also reserved with the interface being connected with " start/end " button of examination operation for training, by plug-in wireless data transmission equipment, can also be connected with wireless " start/end " button of installing on car.

7. automatic invigilation grading apparatus used in any vehicle pole exam process according to claim 1, it is characterized in that: this device is connected the additional plug-in display (43) arranging and is connected plug-in keyboard/touch-screen (41) by hyperchannel input and output general-purpose interface (202) by display screen interface (203) in this locality, accept local operator and carry out various corresponding settings, inquiry basic operation by plug-in keyboard/touch-screen (41).

8. the method that realization divides any vehicle pile examination process automatic monitoring examination, it is characterized in that: it is the automatic invigilation grading apparatus used in any vehicle pole exam process utilizing described in claim 1, by the machine vision of multimedia video processor DSP and ccd video camera formation and in conjunction with digitizing switch amount collector, the training that the place stake of vehicle driver place driving efficiency examination is examined and examination process are carried out invigilator automatically and are judged with scoring, jointly to realize with the collaborative work of the software moving on embedded OS by the hardware of operation built-in Linux operating system, the module that described application software comprises has: communication receiving/transmission device (51), data volume collector (52), data backup device (53), analog quantity acquiring device (54), achievement scorer (55), audio signal sample device (56), video signal collective device (57), collector of switching value (58), vehicle movement information acquisition device (59), operator's man-machine interface (60), character Voice decoder (61), switchgear actuator (62), digital device driver (63), data link (64) and data maintenance device (65), each module is all contained on built-in Linux operating system,

The effect of described communication receiving/transmission device (51) is to network with host computer or the miscellaneous equipment with corresponding communications protocol;

Described digital data acquisition device (52) is connected with built-in Linux operating system and communication receiving/transmission device (51) respectively, and its effect is the physical quantity information gathering after digitizing;

Described data backup device (53) for preserve driver's total marks of the examination and examination process other think need retain information;

Described analog quantity acquiring device (54) gathers analog quantity by analog to digital conversion interface;

Described achievement scorer (55) carries out Analysis And Evaluation to the information from examination vehicle and examination hall, and provides final total marks of the examination;

Described audio signal sample device (56) converts digital audio-frequency data by audio input interface to simulated audio signal;

Described video signal collective device (57) obtains digital of digital video data by video input interface and passes to vehicle movement information acquisition device (59);

Described collector of switching value (58) is by the parallel direct read switch amount of input interface status information;

Described vehicle movement information acquisition device (59) is by obtaining motion state and the movement locus Moving Objects information of examination vehicle to the analysis of digital of digital video data;

Described operator's man-machine interface (60) is accepted site operation people's instruction and is explained and carry out, and also tells this site operation people execution result simultaneously;

Described character Voice decoder (61) completes a character cue and converts voice message signal to, and drives plug-in public address system by audio output interface, makes tester can obtain with ear prompting or the requirement of this scoring apparatus by loudspeaker;

Described switchgear actuator (62) is by the direct output switch amount of parallel output interface device drives signal;

Described digital device driver (63) is connected with built-in Linux operating system and communication receiving/transmission device (51) respectively, comes to carry out communication with driven external unit by universal input outputting communication interface;

Described data link (64) is connected with built-in Linux operating system and communication receiving/transmission device (51) respectively, and the data that need to exchange by communication network are carried out to modulation and demodulation;

Described data maintenance device (65) is connected with built-in Linux operating system and communication receiving/transmission device (51) respectively, obtains examination standards of grading and other regulation initialization data from host computer or mobile memory;

The total workflow of method that described realization divides any vehicle pile examination process automatic monitoring examination is:

S101: system initialization, checks software and hardware, and needed the variable of initial value to give initial value;

S102: guide embedded OS and load an automatic monitoring examination point involved application program from program storage;

A s103: after application program operation, and constantly judge whether before examination to need to examine carrying out stake? if need stake to examine, enter step s104, if do not need stake to examine, directly enter s105;

S104: start to enter s105 after stake examination;

S105: before examination or after finishing, pending following several attended operations such as enter in stake:

Enter operating system environment,

Place signal self-inspection,

Examination region picture profile is set,

Call in examination judgment criteria and other initialization data from host computer or movable storage device,

Video parameter is set, comprises port, brightness, contrast, colourity and saturation degree,

Speech engine is set, the one among selection voice IC, voice document or sound bank;

S106: above-mentioned work is just reviewed and validate and exited after all finishing? if do not exit, return to s103, if exit, enter s107;

S107: shutdown system.

9. the method that realization according to claim 8 divides any vehicle pile examination process automatic monitoring examination, is characterized in that:

Described s104 stake examination flow process comprises:

S201: call in initialization data necessary while examination;

S202: check and have examinee information? be labeled as if having and take an examination and enter S203, if without being labeled as and training and enter S205,

S203: examination starts front examinee's identity discriminating of first carrying out;

S204: confirmation identity authentication is passed through? if by entering S205, otherwise return to S202;

S205: start following execution instruction to gather and analyze:

1. have or not local start/end key information?

2. have or not the start/end key information from wireless data transmission equipment?

3. have or not " start/end " from PC obtained by Ethernet interface to carry out command information

4. have or not " start/end " obtained by Vision Builder for Automated Inspection to carry out command information

If one of above information exists, enter S206, if do not have, return to S202;

S206: examination process monitoring, enters S207 after having monitored;

S207: have or not the information of exiting? if enter S208, otherwise return to S202;

S208: exit stake and examine program.

10. the method that realization according to claim 9 divides any vehicle pile examination process automatic monitoring examination, is characterized in that: described S206: examination process monitoring flow process comprises:

S301: voice message examination starts;

S302: carry out in real time place signal and examination hall video acquisition and send host computer to;

S303: examination process analysis procedure analysis and achievement are judged, utilize the place signal and the video data that collect, analyzes examination process, and the judgement of achieving the result;

S304: transmit Analysis And Evaluation result to host computer;

S305: whether current exercise or examination process finish or complete finish or complete, and enter S306, otherwise return to S302 if determine;

S306: be confirmed whether it is exercise? if exercise, enters S308, otherwise enters S307;

S307: save data: preserve after total marks of the examination and other are appointed as the information that must preserve and enter S308;

S308: exit examination process monitoring.

The method that 11. realizations according to claim 10 divide any vehicle pile examination process automatic monitoring examination, is characterized in that: described S303: examination process analysis procedure analysis and achievement determination flow comprise:

S401: obtain place signal and examination hall vedio data;

S402: driving trace and the direction of determining vehicle;

S403: judge that whether the driving trace of vehicle and direction qualified? enter S405 if qualified, if defective, enter S404;

S404: frame picture and the result of determination while recording defective judgement;

S405: enter S406 after the result of determination with voice message examination;

S406: output Analysis And Evaluation result.

The method that 12. realizations according to claim 9 divide any vehicle pile examination process automatic monitoring examination, is characterized in that: described S203 examinee's identity identification flow comprises:

S501: obtain identity and differentiate vedio data, the identity discriminating video image from video input A interface is analyzed and processed;

S502: from motion tracking examinee head portrait;

S503: form photo sticker;

S504: the identity of exporting attached photo sticker is differentiated video.