RU2103746C1 - Method for coordinated movement of vehicles and device which implements said method - Google Patents

Abstract

FIELD: city traffic control systems. SUBSTANCE: method involves detection of mean estimated velocity of vehicle movement in controlled piece between cross lights and indication of this velocity by means of digital indicator, detection of moment when next light is red, measuring time between start of busy state and calculation of mean estimated velocity using difference between minimal advisable passing time to next cross light and time which passed from start of busy state. Then method involves setting mean estimated velocity of vehicle movement in controlled piece till next cross light using digital indicator, i.e. according time when vehicle passes digital indicator and functional state of next cross light in this moment. Detector traces and detects moment when next cross light is to be busy. Control signal is transmitted through communication channel to command decoder which starts address counter and finally program unit provides zero mean velocity which is displayed on digital indicator. Then 24-hour clock provide clock frequency signals which are received by address counter which increases address value in order to select between velocity values which are stored in program unit. EFFECT: possibility to control movement of vehicles in city arterial roads with different distance between cross lights using one-side and two-side traffic streets, possibility for car drivers which enter arterial road from arbitrary direction to fit into estimated velocity values for passing this arterial road and follow green light phase of next cross light in order to increase transmission capacity of arterial road. 2 cl, 1 dwg

Description

 The invention relates to the field of coordinated transport management on city highways.

 A known method of coordinated regulation of traffic flows through the so-called "green wave", / see for example, P.V. Rubashevsky "Organization and regulation of traffic using automatic controls" p. 57 - 61, Moscow, "Higher School", 1974, / based on a preliminary selection of the estimated speed from the selected the initial traffic light object (hereinafter referred to as CO) to the next CO, the estimated time of movement of transport units to the next CO is preliminarily determined, and after this period of time by means of the device it turns on a green signal of the subsequent CO. Then, the initial moment of turning on the green signal of the subsequent CO / conditionally accepted as the initial / is taken as a reference point for calculating the time of movement of vehicles to the next CO, etc.

 The advantages of coordinated regulation of traffic flow along the Green Wave are obvious. The traffic flow moves uniformly, without stops and jerks, less exhaust gases in the air, the throughput capacity of the highway increases. But this is inherent only if the drivers, traveling the distance from one CO to another, precisely fit into the estimated time period during which non-stop passage of neighboring intersections is guaranteed.

 However, with two-way traffic and uneven distances from one intersection to another, the average recommended speed for this highway practically does not provide non-stop movement of the vehicle. Vehicles following the same CO from opposite directions, with equal speed, overcome the hauls from previous intersections at different times, which leads the vehicle to the intersection with a red CO signal.

 It was possible to establish two attempts to improve the CO management indicators for Green Water / cm. a. from. USSR N 353257, class G 08 Q 1/07, 1972 and a. from. USSR N 1705852, class G 08 Q 1/08, 1992 / without changing the essence of the above method.

 In the first case, an indicator of the speed of movement of the vehicle is introduced when controlling the CO along the Green Wave, which contains an executive unit with diode-relay cascades, a frequency divider connected to the conversion unit via the contacts of the synchronization button of the executive unit to the AC mains and a digital indicator, and a digital indicator and the executive unit, respectively, a seven-step and a control relay are introduced, and the inputs of the digital indicator are connected to the AC network, and the outputs of the listed unit are connected to the inputs block ceiling elements.

 The use of this invention partially improves the "green wave", since driving in the next direction of the next CO, drivers of vehicles receive more accurate information about the recommended average estimated speed on the stretch to the next CO and will often non-stop follow the subsequent CO of the highway. In addition, the uniformity of traffic flow increases slightly.

 However, the positive factors noted above are exclusively inherent only for vehicles following the highway with the "green wave" system and absolutely do not spend traffic flowing to the highway with the "green wave" from the transverse directions, i.e. Drivers of vehicles traveling from the transverse directions to the “green wave” highway do not fit into the calculated speeds within the given driving distance and, for the most part, subsequently receive the red CO signal.

 The technical solution described above cannot function on the city highways not equipped with the "green wave" system, which significantly limits the possibility of its use.

 In addition, this technical solution does not explain at all the method for determining the recommended speed of movement and allows us to only assume that at the beginning of the green phase of the CO, which passed the vehicle, the digital indicator shows the values of speeds slightly lower than the average estimated speed, on the assumption that the vehicles turned to the highway funds will arrive earlier than necessary for the next CO and will be at the intersection, and at the end of the green phase, the speed is given above the average calculated, so that a few To flood vehicles in order to better use the green phase of the subsequent CO of this cycle.

 In the second case, a more accurate method of determining the average estimated / recommended / speed of movement, but without taking into account the presence of the next CO and its specific mode of operation, is described.

 The present invention is directed to the creation of coordinated regulation of the movement of mobile units on the city’s transport highways, which would allow drivers of vehicles that turned to the highway from the transverse directions to fit into the calculated driving speeds of the highway equipped with the “green wave” and follow in the “green phase” interval "subsequent JI, and as a result, increase the capacity of the highway.

 In addition, the invention is aimed at creating a system for controlling the movement of vehicles, which could function on highways not equipped with a system of the type of "green wave", including two-way traffic and different lengths of hauls, which makes it more flexible and universal.

 According to the invention, the technical result is achieved in that a method for coordinated regulation of the movement of moving units, based on determining the average estimated speed of movement of moving units in a controlled section of the stage between traffic lights and its indication by means of a digital indicator, characterized in that they fix the start of employment of the subsequent traffic light, track the amount of elapsed time since the start of employment and determine the average estimated speed of movement in p connectivity expedient minimum travel time to the subsequent traffic light the object and the time elapsed since the start of its employment.

 As a result of the search, it was found that for the implementation of the above method essentially set tasks and the required elements for this, the closest analogue is a device for regulating the movement of US patent N 1421232, class. G 08 G 1/00, 1976, containing a decoder, a digital indicator and a storage device.

 In view of all the above, a device for coordinated regulation of the movement of moving units is proposed, comprising a digital indicator, a decoder and a program unit, characterized in that it contains a daily time clock, an address counter and a tracking sensor included in the lamp power supply circuit of the corresponding signal of a traffic light object, which follows mobile units, the output of the tracking sensor through a communication channel is connected to the first input of the decoder, the second input of which is connected to the first output of the clock of time, a second output connected to a first input of the address counter, a second input coupled to the first output of the decoder, and a second output of which is connected to the address counter output corresponding program input unit, an output connected to the input tsifroukazatelya.

 Thus, the introduction of a tracking sensor in a subsequent CO, fixing with this sensor the moment of the start of employment of exactly the next CO, and further determining / depending on the elapsed time m of the fixed moment of the start of this employment of CO / the set of suitable speeds allows you to inform the drivers of mobile units about the required movement speeds over the range of the entire duration of the subsequent CO cycle.

 Such an approach to determining arrays of expedient speeds and placing the speed indicator in the maximum approximation to the previous SB makes only the moments of the vehicle appearing in time at the speed indicator and is completely irrelevant from which / direct or turning / directions this or that vehicle entered the stage whether it was before this in the "green wave" system or outside it.

 The method of coordinated regulation of the movement of moving units is as follows.

According to the prescription of the State Automobile Inspection, the maximum permissible travel speed is assigned / v $\genfrac{}{}{0ex}{}{\text{max}}{\text{gai}}$ / pre-selected / within the boundaries of the stretch between adjacent CO / controlled area on the stretch of long L _y - for example, 40, 45, 50, 60, 65, ..., 90 km / h.

Determines the minimum allowable estimated time / τ $\genfrac{}{}{0ex}{}{\text{races}}{\text{min}}$ / driveway managed area.

Измеряется длительность цикла работы СО с разделением цикла на две части, а именно:
где

τ_{свободного СО} = τ_{зеленого сигнала}; (2)
Формируется минимальное целесообразное время проезда управляемого участка как сумма минимально допустимого расчетного времени проезда и времени занятости СО, а именно

По величине минимального целесообразного времени проезда определяется наименьшая допустимая из совокупности наибольших целесообразная скорость движения τ $\genfrac{}{}{0ex}{}{\text{целесообр.}}{\text{min}}$ = τ $\genfrac{}{}{0ex}{}{\text{расч.}}{\text{min}}$ + τ_{занятости СО} (3) принимаемая за "нулевую" - V₀.

The duration of the CO cycle is measured with the division of the cycle into two parts, namely:
Where

τ _{free CO} = τ _{green signal} ; (2)
The minimum expedient travel time of the managed section is formed as the sum of the minimum permissible estimated travel time and the CO busy time, namely

From the value of the minimum suitable travel time, the smallest acceptable from the set of the largest appropriate travel speeds is determined $\genfrac{}{}{0ex}{}{\text{purposeful}}{\text{min}}$ = τ $\genfrac{}{}{0ex}{}{\text{calc.}}{\text{min}}$ + τ _{employment СО} (3) taken as “zero” - V ₀ .

Further, according to the difference between the minimum appropriate travel time and the time that has elapsed since the start of employment of the subsequent CO / with a certain time step, for example, 2, 4, ..., sec., And a speed increase of 1, 2, 3, 4, 5 km / h / the whole set of acceptable ones is determined / by the sign of travel at the moment of free CO / with subsequent reasonable separation of n speed blocks in the interval from "zero" - V _{0, i} , for the assigned i-th block, to the maximum allowable, / e.g. V _{0, i} = 35, V _{1, i} = 36, ..., V _{j, i} = v $\genfrac{}{}{0ex}{}{\text{max}}{\text{min}}$ = L _y / τ $\genfrac{}{}{0ex}{}{\text{purposeful}}{\text{min}}$ 46,. . . , v $\genfrac{}{}{0ex}{}{\text{max}}{\text{gai}}$ = 60 km / h / and is recorded in the program block, from which, depending on the traffic light signal, the calculated speeds are displayed on the digital indicator display.

 The drawing shows a block diagram of a device that implements the method.

 The device comprises a traffic light object 1, a tracking sensor 2 of the operation of a traffic light object, a communication channel 3 connecting a command decoder 4, a daily time clock 5, an address counter 6, a program block 7 containing a record of several blocks of design speeds compiled in a certain way, a digital indicator 8 and a command point 9.

 The device operates as follows.

 Tracking sensor 2 captures the moment of the start of employment of the subsequent traffic light object 1 and sends a controlled signal to command decoder 4 via communication channel 3, which starts address counter 6 with its signal, puts it in the “zero” position and calls the first “zero” from the program block 7 "the recommended speed, which is displayed on the digital indicator 8. Then, from the daily clock 5, signals with a given frequency / 1, 2, 3, ... sec / are sent to the address counter 6, which increases the address value by one, which ensures the choice of values speeds recorded in the program block 7.

 In addition, the clock of daily time 5, according to a specific program, gives signals to a decoder 4, which switches the pages of program block 7, in which the arrays of recommended speeds are recorded in a certain way, depending on the time of day.

 The proposed method for coordinated control of the movement of moving units and a device for its implementation allows drivers of vehicles entering the highway from transverse directions to fit into the design speeds of the digital indicator indicated on the scoreboard and follow in the interval of the green phase of the subsequent traffic light object and, as a result, increase the throughput capacity of the highway .

 In addition, the proposed method allows you to control the movement of traffic on highways of cities not equipped with "green wave" systems, including on streets with two-way traffic at different lengths of lines between CO, which greatly simplifies and reduces the cost of traffic control systems on highways, and It also ensures the regularity of passenger and route automobile and electric vehicles in cities and automobile transport in quarries.

Claims (2)

 1. A method of coordinated regulation of the movement of moving units, based on determining the average calculated speed of movement of moving units in a controlled section of the stage between traffic lights and its indication by means of a digital indicator, characterized in that the moment of the start of employment of the subsequent traffic light is recorded, the amount of elapsed time is monitored from the moment the beginning of employment and determine the average estimated speed by the difference of the minimum appropriate travel time before after blowing traffic light object and time elapsed since the beginning of its employment.  2. A device for coordinated regulation of the movement of moving units, containing a digital indicator, a decoder and a program block, characterized in that it contains a daily time clock, an address counter and a tracking sensor included in the lamp power supply circuit of the corresponding signal of a traffic light object, which follows the movement of the moving units, the output of the tracking sensor through a communication channel is connected to the first input of the decoder, the second input of which is connected to the first output of the daily time clock, the second output of which is connected n the first input of the address counter, a second input coupled to the first output of the decoder, the output of which second counter output and the address are connected to respective inputs of the block program, which output is connected to the input tsifroukazatelya.