Vehicle driving skill quantitative evaluation method and system

Abstract

The invention provides a vehicle driving skill quantitative evaluation method and system, and belongs to the technical field of skill evaluation, and the method comprises the steps: building an examination place electronic map based on the examination content, the examination standard and the examination place setting regulations of the vehicle driving skill; constructing a vehicle structure model based on the examination vehicle information; constructing a score deduction item code table for quantitative evaluation of the driving skills based on score deduction rules corresponding to assessment items set by the driving skills; acquiring vehicle motion information and vehicle operation actual condition information in a driver assessment process; and based on the examination room electronic map, the vehicle structure model, the score deduction item code table and the vehicle motion and vehicle operation real conditions in the driver examination process, obtaining a driving skill quantitative report card of the driver. The vehicle driving skill assessment method not only pays attention to whether the final score is qualified or not, but also pays attention to the specific score deduction condition in the driving skill assessment process, and solves the technical problem that the existing vehicle driving skill assessment method is not objective and meticulous enough to assess the driving skill of the driver.

Description

Technical Field

[0001] The present invention relates to the technical field of skill assessment, and in particular to a vehicle driving skill quantitative assessment method and system. Background Art

[0002] From the current examination system, driving skills assessment currently usually adopts a simple binary evaluation standard of "pass" or "fail", which mainly focuses on the final pass or fail, and lacks a detailed assessment of the driver's specific skill level. For example, in some exams, if the candidate makes a serious mistake or multiple minor mistakes, he will be judged as failing, but his driving skill level may vary greatly. This binary evaluation method simplifies the assessment process and in fact cannot fully reflect the actual driving ability of the candidate. At the same time, studies have shown that the pass or fail score alone cannot fully reflect the driving ability, because the passer may encounter problems in certain situations and fail the assessment, and the loser may drive safely under luck.

[0003] Therefore, the existing vehicle driving skill assessment methods are not objective and detailed enough in assessing the driver's driving skills. Summary of the invention

[0004] In view of this, it is necessary to provide a vehicle driving skill quantitative assessment method and system to solve the technical problem that the existing vehicle driving skill assessment method is not objective and detailed enough in assessing the driver's driving skills.

[0005] In order to solve the above problems, on the one hand, the present invention provides a method for quantitatively evaluating vehicle driving skills, comprising: Construct an electronic map of the examination venue based on the vehicle driving skills assessment content, assessment standards and examination venue setting regulations; Build a vehicle structure model based on the test vehicle information; Based on the deduction rules corresponding to the assessment items set for driving skills, a deduction item code table for quantitative evaluation of driving skills is constructed; Obtain vehicle movement information and vehicle operation real-time information during the driver assessment process; Based on the electronic map of the examination site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained.

[0006] In a possible implementation, based on the vehicle driving skill assessment content, assessment standards and test site setting regulations, an electronic map of the test site is constructed, including: Determine the non-project assessment area and project assessment area of ​​the test site based on the vehicle driving skills assessment content, assessment standards and test site setting regulations; Marking each line in the non-project assessment area, and fitting a straight line based on the marked points; In the project assessment area, points are marked respectively according to the starting area, assessment area, end area and square area, and the coordinates of the points are collected; The straight line and the dot coordinates are imported into a preset examination room map to obtain an electronic map of the examination room.

[0007] In a possible implementation, before building a vehicle structure model based on the test vehicle information, the following steps are also included: When the test vehicle is parked on a flat ground area, the vehicle perimeter information and the length, width and height of the vehicle are collected at the point where the outer frame of the test vehicle and the wheels are perpendicular to the ground; Obtain key point coordinate information of the test vehicle; Based on the vehicle circumference information, the vehicle length, width and height, and the key point coordinate information, the test vehicle information is obtained.

[0008] In a possible implementation, the key point coordinate information includes: coordinates of the center point of the vehicle head, the left front point of the vehicle head, the right front point of the vehicle head, and the coordinates of the vehicle positioning point.

[0009] In a possible implementation, obtaining vehicle motion information and vehicle operation real-time information during the driver assessment process includes: Obtain vehicle motion information during the assessment process based on differential positioning, as well as actual vehicle operation information collected by sensors on the test vehicle.

[0010] In a possible implementation, the vehicle operation real-time information includes: parking, braking, accelerator and clutch coordination information, as well as light on information and vehicle speed information.

[0011] In a possible implementation, based on the electronic map of the test site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and vehicle operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained, including: Based on the electronic map of the test site, the vehicle structure model and the actual vehicle movement and vehicle operation during the driver assessment process, the score of each assessment item during the driver assessment process is determined according to the deduction item code table; Sum up the scores of all assessment items to obtain a quantitative report card of the driver's driving skills.

[0012] On the other hand, the present invention also provides a vehicle driving skill quantitative evaluation system, including a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the vehicle driving skill quantitative assessment method as described in any one of the above.

[0013] In a possible implementation, the vehicle driving skill quantitative assessment system further includes: The differential positioning main system is connected to the processor for obtaining the real-time position information of the test vehicle and processing the real-time position information based on the differential positioning method to obtain the vehicle movement information during the test.

[0014] In a possible implementation, the differential positioning main system includes: The GNSS differential positioning module is used to receive radio wave signals containing real-time position information of the test vehicle at multiple times, process the radio wave signals in the differential positioning method, and obtain the vehicle movement information during the test; The assessment data module is used to collect actual vehicle operation information on the test vehicle.

[0015] The beneficial effects of adopting the above implementation are: the vehicle driving skill quantitative evaluation method and system provided by the present invention, based on the vehicle driving skill assessment content, assessment standards and test site setting regulations, constructs an examination site electronic map; based on the test vehicle information, constructs a vehicle structure model; based on the deduction rules corresponding to the assessment items set for driving skills, constructs a deduction item code table for driving skill quantitative evaluation; obtains vehicle movement information and vehicle operation actual information during the driver assessment process; the present invention combines the examination site electronic map, vehicle structure model, deduction item code table and vehicle movement and vehicle operation actual situation during the driver assessment process to perform a driving skill quantitative evaluation and obtain a driver's driving skill quantitative transcript. Compared with the existing driving skill evaluation method, the evaluation method provided by the present invention not only focuses on whether the final score is passed or not, but also focuses on the specific deduction items and deduction situations in the driving skill evaluation process, so as to help determine the strong and weak items, evaluate the driving skills more carefully, and achieve a more objective evaluation of the driver's driving skills, thereby solving the technical problem that the existing vehicle driving skill evaluation method is not objective and detailed enough for the driver's driving skill evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1A flowchart of an embodiment of a method for quantitatively evaluating vehicle driving skills provided by the present invention; Figure 2 A graphic design drawing of a side parking project provided by the present invention; Figure 3 A graphic design diagram of a curved driving project provided by the present invention; Figure 4 A graphic design drawing of a right-angle turn project provided by the present invention; Figure 5 A graphic design drawing of a project for passing through a width-limited door provided by the present invention; Figure 6 The projection point sampling diagram of the test vehicle provided by the present invention; Figure 7 A test vehicle sampling point map provided by the present invention; Figure 8 A side parking area map provided by the present invention; Fig. 9 A principle block diagram of an embodiment of a vehicle driving skill quantitative evaluation device provided by the present invention; Fig.10 A schematic diagram of the structure of an embodiment of the vehicle driving skill quantitative evaluation system provided by the present invention; Fig.11 An architecture diagram of an embodiment of a vehicle driving quantitative evaluation system provided by the present invention; Fig.12 A diagram of the GNSS differential reference station architecture provided by the present invention; Fig.13 This is a diagram of the architecture of the GNSS vehicle-mounted mobile station provided by the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0020] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0021] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0022] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a method and system for quantitatively evaluating vehicle driving skills, which are described below respectively.

[0024] like Figure 1 As shown, the present invention provides a method for quantitatively evaluating vehicle driving skills, comprising: S101. Construct an electronic map of the test site based on the vehicle driving skill assessment content, assessment standards and test site setting regulations; S102, constructing a vehicle structure model based on the test vehicle information; S103, constructing a deduction item code table for quantitative evaluation of driving skills based on the deduction rules corresponding to the assessment items set for driving skills; S104, obtaining vehicle movement information and vehicle operation real-time information during the driver assessment process; S105. Based on the electronic map of the test site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and vehicle operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained.

[0025] It can be understood that the present invention provides a method for quantitatively evaluating vehicle driving skills, comprising: Step 1: Based on the assessment content, standards, and examination venue setting regulations, use the examination venue model construction module to build an electronic map of the examination venue.

[0026] Step 2: Based on the height, width, length and circumference of the test vehicle, use the vehicle model building module to build an accurate vehicle structure model, including: Step 3: According to the different assessment items set for driving skills, establish the deduction rules for different assessment items, and form a deduction item code table that is convenient for the skill quantitative assessment system to judge, including: Analyze the quantification characteristics of skills in different assessment items and clarify the quantification standards of skills in corresponding assessment items; Establish deduction rules for different assessment items and specify the deduction values ​​for the corresponding deduction items; Formulate the deduction of assessment standard deviation based on the vehicle driving related data obtained by the skill quantitative assessment system; Form a deduction rule table for different assessment subjects, and establish a deduction item code table according to the deduction items and deduction values ​​of different assessment items.

[0027] Step 4: Based on the vehicle movement and vehicle operation during the driver assessment process, obtain the driver's total driving skill score and driving skill quantitative report card, including: In some embodiments, based on the vehicle driving skill assessment content, assessment standards and test site setting regulations, an electronic map of the test site is constructed, including: Determine the non-project assessment area and project assessment area of ​​the test site based on the vehicle driving skills assessment content, assessment standards and test site setting regulations; Marking each line in the non-project assessment area, and fitting a straight line based on the marked points; In the project assessment area, points are marked respectively according to the starting area, assessment area, end area and square area, and the coordinates of the points are collected; The straight line and the dot coordinates are imported into a preset examination room map to obtain an electronic map of the examination room.

[0028] It is understandable that the construction of the electronic map of the examination room includes: Check the vehicle driving skills and relevant regulations of the national driving test to clarify the assessment content, standards and test venue setting regulations; Each line in the non-project assessment area of ​​the examination room is marked with dots, and a coordinate is collected every 10 meters to fit into a straight line; Mark points in each test area of ​​the examination room. The collection areas include the starting area, the test area, and the ending area. Four points are collected in the square area, and the edges of the curve area are densely and continuously collected to obtain coordinates. Use the point collection software to import the data of each point collection into the map and construct an electronic examination room map.

[0029] In some embodiments, before building a vehicle structure model based on the test vehicle information, the process further includes: When the test vehicle is parked on a flat ground area, the vehicle perimeter information and the length, width and height of the vehicle are collected at the point where the outer frame of the test vehicle and the wheels are perpendicular to the ground; Obtain key point coordinate information of the test vehicle; Based on the vehicle circumference information, the vehicle length, width and height, and the key point coordinate information, the test vehicle information is obtained.

[0030] In some embodiments, the key point coordinate information includes: the coordinates of the center point of the vehicle front, the left front point of the vehicle front, the right front point of the vehicle front, and the coordinates of the vehicle positioning point.

[0031] It can be understood that after parking the test vehicle in an area with a flat ground, mark the vertical points of the vehicle's outer frame and wheels on the ground, take samples at the vertical points to obtain information around the vehicle, and then use measuring tools to measure the vehicle's length, width, and height.

[0032] The two antenna positions on the test vehicle are fixed to collect the coordinates of the center point of the vehicle front, the left front point of the vehicle front, the right front point of the vehicle front, and the vehicle positioning point.

[0033] The obtained measurement information of the test vehicle’s height, width, length, and circumference is used to build an accurate vehicle structure model.

[0034] In some embodiments, obtaining vehicle motion information and vehicle operation real-time information during the driver assessment process includes: Acquire the vehicle motion information during the assessment process based on the differential positioning method, as well as the actual vehicle operation information collected by the sensors on the test vehicle.

[0035] In some embodiments, the vehicle operation real-time information includes: parking, braking, accelerator and clutch coordination information, as well as light on information and vehicle speed information.

[0036] In some embodiments, based on the electronic map of the test site, the vehicle structure model, the code table of deduction items, and the vehicle movement and vehicle operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained, including: Based on the electronic map of the test site, the vehicle structure model and the actual vehicle movement and vehicle operation during the driver assessment process, the score of each assessment item during the driver assessment process is determined according to the deduction item code table; Sum up the scores of all assessment items to obtain a quantitative report card of the driver's driving skills.

[0037] It is understandable that obtaining a quantitative report card of driving skills includes: The driving skill quantitative assessment system receives the real-time vehicle movement data and vehicle driving operation data during the driver assessment process to form a driver test assessment information data package; Based on the driver assessment information data package obtained, the computer installed on the test vehicle analyzes the data package data, combines the vehicle GNSS precise positioning data and the vehicle model and test site model restrictions, and reports the evaluation results based on the location areas of different assessment items; Based on the evaluation results of different assessment item locations and areas, the driver's total driving skill score and driving skill quantitative report card are obtained.

[0038] In some embodiments, a method for quantitatively evaluating vehicle driving skills includes: Step 1: Based on the assessment content, standards, and test site setting regulations, use the test site model construction module to build an electronic map of the test site, including: Check the vehicle driving skills and relevant regulations of the national driving test to clarify the assessment content, standards and test site settings. The assessment items are clearly defined as parallel parking, straight driving, curve driving, right-angle turning, and passing through width-restricted gates. The assessment standards and site settings for each item are: ①Parking on the side The graphic design of the side parking project should comply with Figure 2 As shown, additional obstacles can be added before and after the warehouse. Figure 2 middle: ... — control line; L ——Parking space length: for large buses, it is 1.5 times the vehicle length minus 1m; for small buses, it is 1.5 times the vehicle length plus 1m; for other vehicles, it is 1.5 times the vehicle length; W——parking space width, vehicle width plus 0.8m; w——lane width, 1.5 times the vehicle width plus 0.8m.

[0039] ② Curved driving The graphic design of the curve driving project should comply with Figure 3 As shown. Figure 3 middle: Radius: 12m for large trucks, large buses, tractors, etc., 9.5m for medium-sized buses and low-speed trucks, and 7.5m for small cars; Road width: 4m for large trucks and large buses, 7m for tractors, 3.7m for medium-sized buses and low-speed trucks, and 3.5m for small cars; Arc length: three eighths of the circumference.

[0040] ③Right-angle turn The graphic design of the right-angle turn project should comply with Figure 4 As shown. Figure 4 middle: L ——Road length, greater than or equal to 1.5 times the vehicle length; W ——Road width: for small cars, the wheelbase plus 1m; for tractors, the front wheelbase plus 4m; for other vehicles, the wheelbase plus 0.5m.

[0041] ④ Pass through the width-limited door The graphic design of the project through the limited width door should comply with Figure 5 As shown. Figure 5 middle: ● ——Width-limiting door pole; −− ——Road centerline; S ——Road width, the value is greater than or equal to 7m; W ——limited door width, which is the vehicle width plus 0.7m; L —— The distance between the front and rear of the width-limiting door, which is three times the vehicle length.

[0042] Each line in the non-project assessment area of ​​the examination room is marked with dots, and a coordinate is collected every 10 meters to fit into a straight line.

[0043] Each line on the site is marked. To ensure accuracy, a coordinate is collected every 10 meters, and finally a straight line is fitted. When the car is moving, the driving assessment and evaluation quantitative subsystem automatically identifies which line segment it is close to and uses this line. At the same time, in order to facilitate the conversion of longitude and latitude and standardization, all coordinates use the CGCS2000 coordinate system; Each assessment item area in the examination room is marked with points. The collection areas include the starting area, assessment area, and ending area. Four points are collected in the square area, and dense and continuous points are collected along the edges of the curved area to obtain coordinates.

[0044] The collection area includes the starting area, the assessment area, and the end area. Four points are collected in each area; the driving assessment and evaluation quantification subsystem automatically corresponds to the working status of the vehicle in which area.

[0045] Use the point collection software to import the data of each point collection into the map and construct an electronic examination room map.

[0046] Run the point collection software, select the corresponding assessment item, collect the coordinate data of the calibration points and import them into the map to form an electronic examination room map model of the entire assessment site.

[0047] Step 2: Based on the height, width, length, and circumference of the test vehicle, use the vehicle model building module to build an accurate vehicle structure model, including: S201. First, park the test vehicle in a flat area, mark the vertical points of the vehicle outer frame and wheels on the ground, take samples at the vertical points to obtain information about the vehicle, and use measuring tools to measure the length, width, and height of the test vehicle.

[0048] Marking and sampling on a flat ground can minimize the error caused by uneven ground. Secondly, a flat ground makes the vehicle more stable, making it easier to accurately mark the outer frame of the vehicle and the vertical point position of the wheel. See the test vehicle projection point sampling diagram. Figure 6 By taking samples at these vertical points, key dimensions and position information around the vehicle can be obtained, which is essential for subsequent measurements, calculations, and vehicle operations.

[0049] S202. Fix the positions of two antennas on the test vehicle, and collect the coordinates of the center point of the vehicle front, the left front point of the vehicle front, the right front point of the vehicle front, and the vehicle positioning point.

[0050] Obtain the key point coordinate information of the test vehicle to facilitate more accurate vehicle model establishment and vehicle relative position judgment on the map. See the test vehicle sampling map for details. Figure 7 shown.

[0051] S203: construct an accurate vehicle structure model using the acquired vehicle height, vehicle width, vehicle length, and vehicle circumference measurement information of the test vehicle.

[0052] The vehicle model building module is used to form an accurate vehicle structure model using the coordinate information of the test vehicle's width, length, circumference, antenna, etc. obtained in the previous step.

[0053] Step 3: According to the different assessment items set for driving skills, establish the deduction rules for different assessment items, and form a deduction item code table that is convenient for the skill quantitative assessment system to judge, including: S301. Analyze the quantification characteristics of skills in different assessment items and clarify the quantification standards of skills in corresponding assessment items.

[0054] Analyze the characteristics of the assessment items and clarify the standards that need to be quantified for the driver's driving skills as shown in Table 1. It is clarified here that according to the different assessment difficulty requirements, the different standard score weights of each assessment item can be changed in the assessment item setting module.

[0055] Table 1: Driving skills quantification table

[0056] S302. Establish deduction rules for different assessment item standards and specify deduction values ​​for corresponding deduction items.

[0057] The total score of each assessment item is selected as 100 points, and the passing score is 80 points. According to the standard deviation of the corresponding assessment skill items, the following deduction values ​​are set, as shown in Table 2.

[0058] Table 2: Driving Skills Deduction Table

[0059] S303. Formulate the deduction of assessment standard deviation based on the vehicle driving related data obtained by the skill quantitative assessment system, as shown in Table 3.

[0060] Table 3: Driving skills scoring formula

[0061] S304: Form a deduction rule table for different assessment subjects, and establish a deduction item code table according to the deduction items and deduction values ​​of different assessment items.

[0062] In addition to the driving skill standards that need to be quantified, there are other deductions for driver skills. Based on the different assessment factors required at different stages and the scoring rules for different assessment factors, the assessment results are calculated using the deviation of each assessment factor. Some deduction items and deduction codes are shown in Table 4.

[0063] Table 4: Deduction code table

[0064] Step 3: It should be noted that the quantitative assessment standards for vehicle driving skills and the corresponding deduction codes can be set according to the assessment requirements for different drivers and the purpose of selecting the best. According to the specific requirements of the assessment standards for each subject, configure according to the weight ratio of time, distance, angle, etc.; set the deduction scores and deduction codes for each subject assessment according to the assessment requirements of the assessment unit. After configuring the corresponding assessment standards and assessment codes, click Save, and the final test score of the candidate will be calculated according to this configuration parameter and give the final score.

[0065] Step 4: Based on the vehicle movement and actual vehicle operation during the driver assessment process, obtain the driver's total driving skill score and a quantitative driving skill report card.

[0066] S401. The driving skill quantitative evaluation system receives the real-time vehicle motion data and vehicle driving operation data during the driver assessment process to form a driver test assessment information data package.

[0067] The differential positioning subsystem of the driving skill quantitative assessment system obtains the real-time motion data of the driver in different driving assessment skill items. The sensors installed on the corresponding test vehicles receive vehicle information during the driver's assessment process, including parking information during different assessment items, the coordination of brakes, accelerators and clutches, the activation status of lights, turn signals, etc. during the project assessment, vehicle speed and other information, to form the driver's assessment information data package.

[0068] S402. Based on the acquired driver assessment information data packet, the computer mounted on the test vehicle parses the data packet data, combines the vehicle GNSS precise positioning data and the vehicle model and test site model restrictions, and reports the evaluation results based on the location areas of different assessment items.

[0069] The computer installed on the test vehicle receives and parses the assessment information data packets transmitted by the driving skills quantification system, and performs real-time analysis and position calculation with the test site model and vehicle model constructed by the vehicle driving assessment quantification subsystem, forming real-time test vehicle dynamics, and finally reporting the evaluation results based on the location areas of different assessment items.

[0070] S403. Obtain the driver's total driving skill score and a driving skill quantitative report card based on the evaluation results based on different assessment item location areas.

[0071] According to the evaluation results of different assessment items evaluated by the vehicle driving skill quantification system, in accordance with the assessment item deduction standards, and in comparison with the assessment item deduction code table, the deduction items in the test process are comprehensively evaluated to obtain the total driving skill quantification score. At the same time, the computer analyzes and calculates the driver's deduction details in the assessment process to form the driving skill quantification report card shown in Table 5. By analyzing the quantification report cards of different drivers, corresponding improvement plans can be formulated.

[0072] Table 5: Driving skills quantitative report card

[0073] Taking parallel parking as an example, the test method of deducting points is explained. Figure 8 .

[0074] 1) When the vehicle reaches the 301 position and the marking points of the left and right rearview mirrors of the vehicle enter the 301 area, the test for this item begins; 2) The vehicle starts to move forward from position 301. If the vehicle moves from the calibration point 302 into the area 305, it is judged that the vehicle has run over the lane edge line. It is judged as: the tires have run over the lane edge line during driving, and 100 points are deducted; 3) The vehicle starts to move forward from position 301. When all the calibration points of the vehicle enter the 302 area and the vehicle detects the disk parking signal, the vehicle is judged to be parked, and no points will be deducted at this time; 4) The vehicle reverses from position 302 to area 303. When the vehicle detects the disk parking signal, if all the vehicle's calibration points are located in area 303 (green area), the vehicle is considered to have entered the garage normally. At this time, points can be deducted based on the time, position and angle of the vehicle from the edge line. If all the vehicle's calibration points are not located in area 303 (green area), the vehicle is considered to have entered the garage abnormally. The judgment is: after stopping in the garage, the vehicle body is out of the line, and 100 points are deducted. 5) When a vehicle enters the 304 area with a calibrated point, the vehicle body is judged to be out of line. The judgment is: after the vehicle stops at the depot, the vehicle body is out of line, and 100 points are deducted; 6) If the vehicle is traveling in the following areas: 301→302→306 (no entry into the warehouse, just drive straight ahead); 301→302→305→302→306 (no storage, and moved into the 305 area once); 301→302→305→302→305→302→306 (no storage, and moved into area 305 twice); If the vehicle is judged as not driving according to the prescribed route, it will be judged as: not driving according to the prescribed route and sequence, and 100 points will be deducted; 7) If the test item is not completed within the specified time, 100 points will be deducted; 8) 100 points will be deducted for irregular driving such as stopping on the road, driving in violation of order, etc.; 9) 100 points will be deducted for not using seat belts as required.

[0075] like Fig. 9 As shown, the present invention also provides a vehicle driving skill quantitative evaluation device 900, comprising: A map construction module 901 is used to construct an electronic map of the test site based on the vehicle driving skill assessment content, assessment standards and test site setting regulations; A model building module 902 is used to build a vehicle structure model based on the test vehicle information; A scoring table construction module 903 is used to construct a deduction item code table for quantitative evaluation of driving skills based on the deduction rules corresponding to the assessment items set for driving skills; The information acquisition module 904 is used to acquire the vehicle movement information and vehicle operation real-time information during the driver assessment process; The quantitative evaluation module 905 is used to obtain a quantitative report card of the driver's driving skills based on the electronic map of the test site, the vehicle structure model, the code table of deduction items, and the vehicle movement and vehicle operation during the driver assessment process.

[0076] The vehicle driving skills quantitative assessment device provided in the above embodiment can implement the technical solution described in the above vehicle driving skills quantitative assessment method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above vehicle driving skills quantitative assessment method embodiment, which will not be repeated here.

[0077] like Fig.10 As shown, the present invention also provides a vehicle driving skill quantitative evaluation system 1000. The vehicle driving skill quantitative evaluation system 1000 includes a processor 1001, a memory 1002 and a display 1003. Fig.10 Only some components of the vehicle driving skill quantitative assessment system 1000 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0078] In some embodiments, the memory 1002 may be an internal storage unit of the vehicle driving skill quantitative evaluation system 1000, such as a hard disk or memory of the vehicle driving skill quantitative evaluation system 1000. In other embodiments, the memory 1002 may also be an external storage device of the vehicle driving skill quantitative evaluation system 1000, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the vehicle driving skill quantitative evaluation system 1000.

[0079] Furthermore, the memory 1002 may include both an internal storage unit of the vehicle driving skill quantitative evaluation system 1000 and an external storage device. The memory 1002 is used to store application software installed in the vehicle driving skill quantitative evaluation system 1000 and various data.

[0080] In some embodiments, the processor 1001 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run program codes or process data stored in the memory 1002, such as the vehicle driving skill quantitative assessment method of the present invention.

[0081] In some embodiments, the display 1003 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 1003 is used to display information in the vehicle driving skill quantitative evaluation system 1000 and to display a visual user interface. The components 1001-1003 of the vehicle driving skill quantitative evaluation system 1000 communicate with each other via a system bus.

[0082] In some embodiments of the present invention, when the processor 1001 executes the vehicle driving skill quantitative assessment program in the memory 1002, the following steps may be implemented: Construct an electronic map of the examination venue based on the vehicle driving skills assessment content, assessment standards and examination venue setting regulations; Build a vehicle structure model based on the test vehicle information; Based on the deduction rules corresponding to the assessment items set for driving skills, a deduction item code table for quantitative evaluation of driving skills is constructed; Obtain vehicle movement information and vehicle operation real-time information during the driver assessment process; Based on the electronic map of the examination site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained.

[0083] It should be understood that: when the processor 1001 executes the vehicle driving skill quantitative assessment program in the memory 1002, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0084] Furthermore, the embodiment of the present invention does not specifically limit the type of the vehicle driving skill quantitative assessment system 1000 mentioned. The vehicle driving skill quantitative assessment system 1000 may be a portable vehicle driving skill quantitative assessment system such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of a portable vehicle driving skill quantitative assessment system include but are not limited to a portable vehicle driving skill quantitative assessment system equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable vehicle driving skill quantitative assessment system may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the vehicle driving skill quantitative assessment system 1000 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0085] The vehicle driving skills quantitative assessment system also includes: The differential positioning main system is connected to the processor for obtaining the real-time position information of the test vehicle and processing the real-time position information based on the differential positioning method to obtain the vehicle movement information during the test.

[0086] The differential positioning main system comprises: The GNSS differential positioning module is used to receive radio wave signals containing real-time position information of the test vehicle at multiple times, process the radio wave signals in the differential positioning method, and obtain the vehicle movement information during the test; The assessment data module is used to collect actual vehicle operation information on the test vehicle.

[0087] In some embodiments, the present invention also provides a system for quantitative evaluation of vehicle driving skills with an embedded architecture, including a differential positioning main system and a driving assessment evaluation software subsystem. The differential positioning main system is mainly used to obtain differential correction information; the driving assessment evaluation software subsystem is used to quantitatively evaluate vehicle driving skills and monitor the assessment process. The differential positioning main system includes a GNSS differential positioning module, an assessment data module, a data communication module, and an assessment monitoring module. The GNSS differential positioning module includes a GNSS differential reference station device and a GNSS vehicle-mounted mobile station device, etc. The GNSS differential reference station device is used to track and observe satellite signals, transmit and broadcast the reference station differential correction information in real time, and provide each mobile station with high-precision carrier phase differential data and starting coordinates; the GNSS vehicle-mounted mobile station device is used to obtain GNSS data. The driving assessment evaluation software subsystem includes a vehicle driving assessment evaluation quantification subsystem and a monitoring subsystem. The vehicle driving assessment evaluation quantification subsystem is used to calculate the real-time position of the vehicle and obtain an evaluation result based on the location area; the monitoring center subsystem is used to monitor the vehicles in the test site in real time.

[0088] Therefore, the present invention adopts the above-mentioned vehicle driving skill quantitative evaluation method and system, which has the following beneficial effects: (1) The method proposed in the present invention can not only accurately reflect the driver's overall skill level by quantitatively scoring each assessment item, but also deeply analyze his strengths and weaknesses in various skills. This refined evaluation method helps to formulate more targeted and effective improvement plans for drivers, thereby comprehensively improving their driving skills.

[0089] (2) The system provided by the present invention combines an embedded structure with a front-end evaluation method. Its embedded structure reduces the dependence of the vehicle driving skill quantitative evaluation system on the environment, has lower power consumption, improves the real-time evaluation of the system, and has little impact on the system when it is turned on and off randomly. In addition, its front-end evaluation method for driver assessment results has low network overhead, and most of the data is processed locally, which improves data stability.

[0090] In summary, the present invention can automatically complete the entire process of the motor vehicle driver field test in a scientific, standardized and orderly manner, reduce the labor intensity of the examiner and ensure the reliability and stability of the assessment process, ensure that the examination is fair and smooth, and at the same time, through the fine quantitative evaluation of the assessment items, it is helpful to more systematically and comprehensively analyze the deficiencies of the driver's driving skills, and provide reliable support for the subsequent corresponding targeted improvement.

[0091] like Fig.11The figure shows the architecture diagram of the vehicle driving quantitative evaluation system. The vehicle driving quantitative evaluation system of the present invention adopts an embedded structure. The embedded structure is a special computer system, which mainly includes hardware devices, embedded systems and application software. The vehicle driving quantitative evaluation system of the embedded architecture mainly consists of a differential positioning main system and a driving assessment subsystem. Next, the composition of the vehicle driving skill quantitative evaluation system of the present invention and related hardware are described.

[0092] 1. Differential positioning main system The differential positioning system mainly includes GNSS (Global Navigation Satellite System) differential positioning module, assessment data module, data communication module, assessment monitoring module and other related accessories.

[0093] (1) GNSS differential positioning module The GNSS differential positioning module includes a GNSS differential base station and a GNSS differential mobile station.

[0094] ①GNSS differential reference station The GNSS differential base station includes a GNSS antenna, a GNSS receiver, a wireless data transmission radio, and a power supply device.

[0095] Ⅰ. GNSS antenna receives radio wave signals transmitted by satellites, including carrier signals, ranging codes and navigation messages, which are used for calculating differential information.

[0096] Ⅱ. The GNSS receiver receives satellite signals obtained by the GNSS antenna and performs real-time satellite tracking and ranging.

[0097] The GNSS differential base station is the reference framework of the entire main positioning system. It continuously tracks and observes satellite signals over a long period of time, transmits and broadcasts the base station differential correction information in real time through wireless data transmission radio stations, and provides high-precision carrier phase differential data and starting coordinates to each mobile station in real time.

[0098] Since the continuity and reliability of differential information broadcasting are directly related to the GNSS accuracy of all on-board GNSS equipment, the differential corrections it provides are the basis for all vehicles in the field to achieve centimeter-level positioning accuracy. Therefore, comprehensive considerations should be made when selecting the location of the GNSS differential base station. Fig.12 shown.

[0099] ②GNSS vehicle-mounted mobile station The GNSS vehicle-mounted mobile station consists of a computer, a small GNSS antenna, dual GPS devices, and a power supply device. The architecture diagram of the GNSS vehicle-mounted mobile station is as follows: Fig.13 shown.

[0100] Ⅰ. The computer is mainly used to process the satellite positioning signals obtained by the GNSS antenna of the vehicle-mounted mobile station, and at the same time to process the differential correction information of the base station transmitted by the wireless data transmission station of the GNSS differential base station, so as to improve the accuracy and timeliness of vehicle positioning.

[0101] Ⅱ. The small GNSS antenna receives the radio wave signal emitted by the satellite, which contains the carrier signal, ranging code and navigation message, and then combines it with the satellite signal data obtained by the base station GNSS antenna to analyze and solve the differential correction signal in the computer.

[0102] III. Dual GPS devices are connected to the mushroom antenna on the roof for real-time differential calculation.

[0103] (2) Assessment data module The assessment data module includes an assessment data collection submodule and an assessment data processing submodule.

[0104] ① Assessment data collection submodule The assessment data collection submodule includes on-board vehicle status collector and sensors.

[0105] Ⅰ. The on-board vehicle status collector collects, stores and transmits data signals such as various lights, seat belt buckles, brakes, clutches, accelerators, handbrakes, gears, wipers, etc. on the vehicle.

[0106] Ⅱ. The sensor is installed at each detection location where signals need to be collected to obtain status information of the relevant detection location.

[0107] ②Assessment data processing submodule The assessment data processing submodule mainly includes an embedded computer.

[0108] The embedded computer includes a serial port, a solid-state hard disk, a fanless dedicated CPU, a mainboard, and memory, etc. It is used to realize the local analysis and calculation of the driving assessment vehicle data collected by the assessment data collection submodule, GNSS differential positioning data, and various information that requires computer processing.

[0109] (3) Data communication module The data communication module includes a wireless bridge and a communication link.

[0110] Ⅰ. Wireless bridge, an essential device for connecting the vehicle-mounted mobile station and the monitoring center.

[0111] Ⅱ. Communication link: used for information exchange and transmission between GNSS differential base station, GNSS vehicle-mounted mobile station, video monitoring center and modules.

[0112] (4) Assessment monitoring module The assessment monitoring module includes a high-definition video recorder, a radio, a video monitoring network, and a display screen.

[0113] Ⅰ. High-definition video recorder, real-time recording of the driver in the car.

[0114] Ⅱ. Radio receiver: All sounds in the car are transmitted to the main monitoring room through the radio receiver, so that the examiner can monitor the test process.

[0115] III. Video surveillance network: used to transmit examination surveillance videos to the examination monitoring center.

[0116] IV. Display screen, used to display test-related information, audio and video signals, etc.

[0117] (5) Other related accessories Ⅰ. Patch panel. All the vehicle-mounted lines (sensor signal lines, power lines) are arranged in sequence through the patch panel.

[0118] Ⅱ. Dedicated power supply and voltage-stabilized power supply.

[0119] III. Fan: Cool down all equipment in the equipment box.

[0120] IV. In-vehicle dedicated touch display. Provide voice prompts and violation judgments based on the test subjects in the test site.

[0121] The above are the main hardware equipment in the car. In addition, there are various cables that will not be repeated here.

[0122] 2. Driving Assessment Subsystem The driving assessment and evaluation subsystem is mainly composed of the vehicle driving assessment and evaluation quantification subsystem and the monitoring center subsystem.

[0123] (1) Vehicle driving assessment and evaluation quantification subsystem The vehicle driving assessment and evaluation quantitative subsystem performs real-time analysis and position calculation based on electronic maps, sensors, and GNSS differential positioning data, and finally reports the evaluation results based on the location area. It includes the following modules: ①Assessment project setting module The assessment item setting module is used to set the assessment subjects and the assessment standards for each subject. The assessment subjects include: parallel parking, straight driving, curved driving, right-angle turning, and passing through width-limited doors; ②Examination room model construction module The examination room model construction module is used to establish the examination room model according to the above assessment standards. The established examination room model is a virtual map model, including the starting area, the assessment area, the end area and several curved and straight lines fitted by coordinates.

[0124] ③Vehicle model construction module The vehicle model building module is used to build an accurate vehicle model after measuring the vehicle.

[0125] ④ Quantitative evaluation module for assessment results The assessment result quantification evaluation module is used to carry out detailed scoring of each item in the driver assessment process. The entire driver assessment result quantification scoring process is carried out in the embedded processor of the test vehicle, which is a front-end evaluation method with low network overhead and good data stability.

[0126] (2) Monitoring center subsystem The monitoring center subsystem mainly uses site maps to realize real-time display and monitoring of the movement process of the assessment vehicle on a large screen.

[0127] Enter the monitoring center subsystem, and its first interface is the test site floor plan, where you can view the current online vehicles and vehicle status. The green area is the site green belt, the area within the white line is the test area, the red line is the monitoring center and the waiting hall, and the blue line is the student restaurant and dormitory. When the vehicle-mounted equipment is powered on and the vehicle GPS signal is normal, green dots will appear on the test site floor plan, and each green dot represents a vehicle. When the mouse hovers over the green dot, a prompt box will pop up, which will display the current vehicle number, vehicle signal status, and GPS status.

[0128] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to perform the vehicle driving skill quantitative evaluation method provided by the above methods, the method comprising: Construct an electronic map of the examination venue based on the vehicle driving skills assessment content, assessment standards and examination venue setting regulations; Build a vehicle structure model based on the test vehicle information; Based on the deduction rules corresponding to the assessment items set for driving skills, a deduction item code table for quantitative evaluation of driving skills is constructed; Obtain vehicle movement information and vehicle operation real-time information during the driver assessment process; Based on the electronic map of the examination site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained.

[0129] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0130] The vehicle driving skill quantitative assessment method and system provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for quantitatively evaluating vehicle driving skills, characterized in that: include: Construct an electronic map of the examination venue based on the vehicle driving skills assessment content, assessment standards and examination venue setting regulations; Build a vehicle structure model based on the test vehicle information; Based on the deduction rules corresponding to the assessment items set for driving skills, a deduction item code table for quantitative evaluation of driving skills is constructed; Obtain vehicle movement information and vehicle operation real-time information during the driver assessment process; Based on the electronic map of the examination site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and vehicle operation during the driver assessment process, a quantitative report card of the driver's driving skills is obtained.

2. The vehicle driving skill quantitative evaluation method according to claim 1, characterized in that: Based on the vehicle driving skills assessment content, assessment standards and test site setting regulations, an electronic map of the test site is constructed, including: Determine the non-project assessment area and project assessment area of ​​the test site based on the vehicle driving skills assessment content, assessment standards and test site setting regulations; Marking each line in the non-project assessment area, and fitting a straight line based on the marked points; In the project assessment area, points are marked respectively according to the starting area, assessment area, end area and square area, and the coordinates of the points are collected; The straight line and the dot coordinates are imported into a preset examination room map to obtain an electronic map of the examination room.

3. The vehicle driving skill quantitative evaluation method according to claim 1, characterized in that: Before building a vehicle structure model based on the test vehicle information, it also includes: When the test vehicle is parked on a flat ground area, the vehicle perimeter information and the length, width and height of the vehicle are collected at the point where the outer frame of the test vehicle and the wheels are perpendicular to the ground; Obtain key point coordinate information of the test vehicle; Based on the vehicle circumference information, the vehicle length, width and height, and the key point coordinate information, the test vehicle information is obtained.

4. The vehicle driving skill quantitative evaluation method according to claim 3 is characterized in that: The key point coordinate information includes: the coordinates of the center point of the vehicle head, the left front point of the vehicle head, the right front point of the vehicle head, and the coordinates of the vehicle positioning point.

5. The vehicle driving skill quantitative evaluation method according to claim 1, characterized in that: Obtain vehicle movement information and vehicle operation real-time information during the driver assessment process, including: Acquire the vehicle motion information during the assessment process based on the differential positioning method, as well as the actual vehicle operation information collected by the sensors on the test vehicle.

6. The vehicle driving skill quantitative evaluation method according to claim 5, characterized in that: The vehicle operation real-time information includes: parking, braking, accelerator and clutch coordination information, as well as light on information and vehicle speed information.

7. The method for quantitatively evaluating vehicle driving skills according to any one of claims 1 to 6, characterized in that: Based on the electronic map of the test site, the vehicle structure model, the code table of deduction items, and the actual vehicle movement and vehicle operation during the driver assessment process, the driver's driving skills quantitative report card is obtained, including: Based on the electronic map of the test site, the vehicle structure model and the actual vehicle movement and vehicle operation during the driver assessment process, the score of each assessment item during the driver assessment process is determined according to the deduction item code table; Sum up the scores of all assessment items to obtain a quantitative report card of the driver's driving skills.

8. A vehicle driving skill quantitative evaluation system, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the vehicle driving skill quantitative assessment method as described in any one of claims 1 to 7.

9. The vehicle driving skill quantitative evaluation system according to claim 8, characterized in that: Also includes: The differential positioning main system is connected to the processor for obtaining the real-time position information of the test vehicle and processing the real-time position information based on the differential positioning method to obtain the vehicle movement information during the test.

10. The vehicle driving skill quantitative evaluation system according to claim 9, characterized in that: The differential positioning main system comprises: The GNSS differential positioning module is used to receive radio wave signals containing real-time position information of the test vehicle at multiple times, process the radio wave signals in the differential positioning method, and obtain the vehicle movement information during the test; The assessment data module is used to collect actual vehicle operation information on the test vehicle.

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