RU2543141C2 - Method to identify qualification of vehicle driver - Google Patents

Abstract

FIELD: instrumentation.

SUBSTANCE: method includes procedure of identification of driver's qualification by measurement of parameters of a vehicle controlled by a driver, which include travelling fuel consumption and vehicle speed, and also additionally there is an angle of opening of a throttling valve that controls air supply into a motor. At the same time driver's qualification is assessed by the value of calculated criterion of qualification, the calculation formula of which includes measured parameters of the vehicle.

EFFECT: invention provides for identification of driver's qualification.

Description

The invention relates to the field of operation of road transport and relates to assessing the qualifications of car drivers. Serious socio-economic problems in transport are road safety, environmental conditions and fuel economy. The main influence on these indicators is provided by the driver as the operator of the vehicle. According to published statistics, he is also responsible for most traffic accidents (for Russia - in more than 80% of cases).

Improving road safety, improving the environmental situation, increasing fuel economy while maintaining the performance of road transport is impossible without an objective assessment of the qualifications of car drivers to identify and possibly remove persons who are not able to fully ensure the efficiency and safety of the transportation process. In addition, the urgent task is to objectively assess the level of qualification of driving school graduates when conducting tests for driving, to identify and possibly limit, in case of non-compliance with the requirements, obtaining a driver’s license.

1. A known method for assessing driver qualifications (Patent RU No. 2465653 C1 of 15/02/1011). In the method of assessing the professionalism of driving a vehicle, used on a simulator for driving instruction, "they construct a dynamic model of the driver in the form of a transfer function containing an aperiodic link, two vibrational links of which are obtained as a result of the Fourier transform of the correlation functions of the driver. Next, they compare the amplitude-phase-frequency response (AFC) of the driver with the reference AFC, which was previously placed in the simulator drive. "

The measurement results for this method are completely subjective and depend on the physical condition of the driver, his mood and other factors, that is, to a certain extent characterize the driver and in no way characterize the behavior of the vehicle being driven by him, which is a source of increased danger. In addition, the tests are carried out in a simulator and in no way reflect the driver’s behavior in real traffic conditions.

There is also a method of assessing driver qualifications according to the criterion of fuel economy (The problem of saving fuel and energy resources in modern conditions. (Http://ver-soft.narod.ru/toplivnaya.html). As a fuel efficiency meter, take the "criterion of effective economic speed movement, which is understood as the speed of the vehicle with the least fuel and time to complete a unit of transport work. ”The criterion can be used if there are indicators to quantify the degree approximation of the driver’s professional qualities to the reference qualities, which are established on the basis of processing the test results or statistical information. Assessing the driver’s qualifications only by the criterion of fuel economy is not an informative way, since it reflects only one indicator of the car’s driving process and cannot be considered sufficient for an objective characteristic such a complex, multi-parameter indicator as driver qualifications.

To objectify the test results, the following mandatory conditions must be observed:

1. Tests should be carried out in the road operating conditions of the car, preferably within the test cycle, regulated by current standards for testing cars.

2. The parameters of the car that are affected by the driver, and not the parameters of the driver, should be measured, since the car is the source of danger on the roads, as well as the source of environmental pollution. 3. Assessment of the driver’s qualifications for the behavior of the car he drives eliminates subjective errors, since even a physically prepared driver may not show sufficient ability to drive the car in a specific road situation.

Closest to the proposed method is a method of indirectly evaluating driver qualifications by vehicle parameters, measured during the exam. In this method, use the training route computer "EXPERT" (Passport M.040.000.00 PS. "Training route computer EXPERT measuring parameter of the economical driving"). With its help, an assessment of the driver’s qualifications is carried out according to the measured parameters of the car. The equipment used is suitable only for analyzing the performance of cars with carburetor engines that have already been discontinued everywhere. As measured parameters in the CMC "Expert" use the direct fuel consumption and engine speed, each of which is compared with the reference values. However, neither an assessment criterion nor a methodology for determining driver qualifications from them has been proposed or justified, which does not make it possible to practically use this method to evaluate different levels of qualification of car drivers.

The proposed method includes a procedure for determining the driver’s qualifications by measuring the parameters of a driver-driven car, which includes the fuel consumption and vehicle speed, and also introduces the opening angle of the throttle that controls the air supply to the engine. In this case, the driver’s qualification is estimated by the value of the calculated qualification criterion, the calculation formula of which includes the parameters measured during the test of the car, and the calculation formula itself represents the following ratio:

где $$K=\frac{V}{D\times Q}$$

Where

V - vehicle speed; D is the opening angle of the throttle; Q - travel fuel consumption by car.

To obtain a dimensionless criterion, all indicators for calculation are taken in relative units. To calculate the relative units, the following boundary (maximum) values are accepted, with respect to which the calculation is carried out:

Vmax = 60 km / h, the maximum permitted vehicle speed in the city;

D max = 100%, maximum throttle opening angle;

Q max = 8.9 l / 100 km, fuel consumption in the urban cycle for the car on which the tests were carried out. In this case, for a VAZ 2115 car with a VAZ 2111 engine (passport data).

Studies of domestic and foreign authors show that the toxicity and excessive consumption of fuel increases significantly in unsteady modes of vehicle movement, especially when accelerating a car. The specific weight of the acceleration mode in the overall balance of the travel time reaches 40%, and the proportion of fuel consumed in this case is about 50% of the total consumption. Factors influencing this mode: the law of acceleration of the car, set by the driver through the position, and the speed of opening the throttle. Therefore, it is from the driver and from how he acts on the throttle while driving, the economy and toxicity of the car during acceleration and during movement depends.

The proportion of unsteady car movement (variable speed movement) in the urban cycle is 90% of the movement time fund, a significant share of which is acceleration modes (about 38-42%).

With a large fuel supply, the mixture is re-enriched and the engine power can not only increase, but even fall. In the case of a lower fuel supply, the car’s capabilities are underutilized, as achievable speed and acceleration are reduced. That is, in fact, the optimization of the mode depends on how the driver controls the throttle, how he knows how to do it in various traffic situations, and therefore on his qualifications. Therefore, the introduction into the calculation of the criterion of such an indicator as a throttle valve is objectively determined, justified and necessary. Tests of groups of drivers of various qualifications by the claimed method showed that it is possible to identify the qualifications of drivers with various lengths and driving styles with a high degree of reliability of the results obtained (95%). The qualification of the driver is evaluated by the value of the qualification criterion K:

9.09 <K> 14.28

If the obtained qualification criterion K is within the specified limits, 9.09-14.28, the driver is considered qualified, and if the obtained criterion falls outside the specified limits, the qualification of the driver is considered insufficient.

Information sources

1. Patent RU No. 2465653C1 dated 02/15/2011.

2. The problem of saving fuel and energy resources in modern conditions, (http://ver-soft.narod.ru/toplivnaya.html).

3. Passport М.040.000.00 PS. "TRAINING-TRAINING COMPUTER EXPERT is a parameter meter for economical driving."

Claims (1)

A method for determining the qualification of a car driver, in which the measured fuel consumption and speed of a vehicle controlled by a test driver are measured, and the qualifications of the driver are determined by their values, characterized in that they additionally measure the opening angle of the throttle valve controlling the air supply to the car engine, and the qualification of the driver is evaluated by the value of the driver qualification criterion K, which is calculated in relative units by the formula

where:
V - vehicle speed; D is the opening angle of the throttle; Q - travel fuel consumption by car,
in this case, if the value of the qualification criterion K falls into the area of qualified driving, namely:
9.09 <K> 14.28,
the driver is considered qualified, and if the criterion obtained is outside the specified limits, the driver’s qualifications are considered insufficient.