Creating a Safety Routing For Urban Freight Transportation

Transcription

1 Creating a Safety Routing For Urban Freight Transportation Oleksii Prasolenko, Dmytro Burko, Illya Tolmachov, Nizami Gyulyev, Anrii Galkin, Oleksii Lobashov O. M. Beketov National University of Urban Economy, 17, M. Baganova, Kharkiv, 61101, Ukraine

2 RESEARCH STAGES System «driver car road environment» Assessing The functional state of the human body Experimental research at road Method evaluate of the functional state and tension of the driver Conclusions

3 THE INTERCONNECTION OF DVER SYSTEM ELEMENTS AND SUBSYSTEM "DRIVER" Environment Vehicle Driver Road Knowledge, ability, skills Professional-quality of the driver Motivation Individual quality of the driver Health of the driver Factors living environment (social, industrial)

4 DRIVING PROCESS State of the driver before the driving Road factors Driving process Change of the driver's emotional state Traction Acceleration Braking With brake pads Rebound With engine

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6 IINFORMATION RECEIVED BY THE DRIVER From the road: -The width of the roadway, condition of its coverage, geometrical parameters, slopes, lifts, visibility, the presence of joints, intersections, bridges, overpasses, etc. From the motion environment: -Weather conditions, the state of the traffic flow, the presence of pedestrians; visibility, which is connected with the lighting; traffic conditions, related to the organization of traffic at intersections, highways, etc. From the car: -Traction and dynamic characteristics of the car, ergonomic parameters of the car interior.

7 OBSTACLES THAT AFFECT THE DRIVER The constant change of the parameters of the road and traffic conditions Change of weather conditions, state of the transport stream etc. DRIVER S CHARACTERISTIC Age, gender, driving experience, temperament type, driving style INDIVIDUAL FEATURES OF THE DRIVER Health state, emotional state, and endurance during driving for certain period of time and certain traffic conditions FACTORS THAT INFLUENCE THE EMOTIONAL STATE OF THE DRIVER: - Movement in the traffic jam; - Braking of the car moving in front; - Changing of the lane of the car moving in front; - Change of the stripe and the choice of the direction of movement by the driver; - Parking of cars along the roadway; - High-density transport stream; - Motions of pedestrians; - Making maneuvers at the crossroads; - Difficult road conditions.

8 GALVANIC SKIN RESPONSE METHOD Galvanic skin response (GSR) is a vegetative reaction of the human central nervous system, manifested in the change in the electrical properties of the skin. The main characteristics of the galvanic skin response are: ability of the background; latent reaction time; duration of reaction time; amplitude and the rate of extinction of the reflex during repeated application of the stimulus.

9 Conductivity of human skin, μs DEPENDENCE OF ELECTRICAL CONDUCTIVITY ON HUMAN SKIN RESISTANCE To study the galvanic skin response, the microsensis scale is used. Microsiemens is found by the formula: 1 R, 1Microsieme ns 6 1Microsieme ns 1 0, ohm. (1) where R resistance Resistance of human skin, kohm

10 DEPENDENCE OF ELECTRICAL CONDUCTIVITY ON HUMAN SKIN RESISTANCE To determine the emotional stress, it is suggested to use the indicator of the area of the GSR. Emotional stress of the driver when traveling on the route has the following form: n Е м S i k 1 where Е м emotional tension of the driver while traveling on the route, μs; S i the area of the galvanic skin response on the i-th section of the route, μs., (2) The area of the galvanic skin response on the route section is determined by the formula: FМксм T i / 3600 S i, L i (3) F Мксм where the value of the galvanic skin response on the i-th section, μs; T i time of movement along the route section, seconds. L i length of the route section, km.

11 ELECTROCARDIOGRAPHY METHOD Electrocardiogram a graphical record of changes in the difference in electrical potentials that occur on the surface of the body due to the activity of the heart. fragment of the cardiogram of the driver Distribution of cardio intervals (RR intervals)

12 Table 1. Indicators of the driver's heart rate before the trip Driver Mean RR, ms Standart deviation of normal cardiointerval array, ms Difference between maximum and minimum values of normal cardiac channels, ms Amplitude of Mode in % to the total number of all NN intervals, % Mode, sec HR, bpm Less sensitive, but more simple in measurement is the indicator of the voltage of information channels, which is calculated by the formula: f f O F, f (4) O where F heart rate shift; f, f O heart rate in the background and in condition when driving on the road.

13 METHOD OF BOTH ANALYSING AND PRESENTING RESULTS OF DRIVING Data logger the Video VBOX records GPS time synchronised video

14 RECORDING THE PARAMETERS OF THE MOVEMENT ALONG THE ROUTE RELATIVE TO THE TIME OF TRAVEL AND DISTANCE THE ROUTE traffic jam traffic jam traffic jam

15 It is rational to use the coefficient of movement delays on the entire route: k j n Т j i 1 sum Т mov, (5) sum where Т mov The amount of time spent on the movement ( Т mov ) and delays ( Т j ) is determined by the formula (6): n n sum Т mov Т mov i 1 i 1 Then the technical speed is determined by the formula: Т j. (6) V tech n i 1 Т L mov M n i 1 Т j, (7) where L M - length of the route, km.

16 Table 2. Analysis of the coefficients of movement delay, the technical speed in accordance with the levels of service Level of service on the route Technical speed on the route, km./hour Coefficient of traffic delays, k j A 30 0,1-0,2 B 20 0,21-0,3 C 15 0,31-0,4 D 10 0,41-0,6 E 5 0,61-0,8 F <5 >0,8

17 GSR RECORD WHILE DRIVING ON THE ROUTE traffic jam traffic jam Graph of changes in emotional stress appearance traffic jam

18 Technical speed, km / h The amount of dangerous braking, units Dependence of technical speed on the route from the coefficient of traffic delays y = 31,511e-1,756x R² = 0, Graph of the change in the number of dangerous braking from the technical speed (range G (Longitudinal Acceleration) max from -0.3 G to -0.6 G) y = -0,0283x2 + 0,9553x + 1,8671 R² = 0, ,2 0,4 0,6 0,8 1 The ratio of total delay time to total movement time (Kj) Technical speed, km / h

19 Emotional tension, µ hours/10 km Heart rate shift Change of the GSR of the driver from the technical speed on the route Change of the heart rate shift from the technical speed on the route 3 0,3 2,5 0,25 2 0,2 1,5 1 0,5 y = -0,0031x2 + 0,0548x + 2,2754 R² = 0, Technical speed, km / h 0,15 0,1 y = -0,0006x2 + 0,0207x + 0,0821 R² = 0, Technical speed, km / h

20 Conclusions We proposed the method of assessing stress of the driver in real time. The stress indicators were proposed: the heart rate shift, emotional shift on GSR. Using this method, we can planning the routes and correct them in real time considering the received stress from route. Therefore we prevent the driver about possible stress. The proposed method takes into account the system of permission of the drivers to work on the route.