DE1281324C2 - Traffic signal control unit - Google Patents

Description

aims, which elastically from signalisieitem knot-counting eggs, preferably with a minimal

Punkt za junction of the constantly changing duration of 2 seconds work, since in smaller counts

Turning stress, at each intersection for itself, at intervals no more than one vehicle of the

fits. Zärücross section can happen. Optional «you should

The invention consists in that in the case of the main 5 metering devices in inieivallen in front of only one solstrasse and possibly also on the cross streets ch & n length, preferably 5 seconds, so that a maximum of 3 vehicles within the metering cross-section in front of the signal transmitters assigned to the node. each provided counting device for counting an interval can happen, and that the Ausj who move past her to the junction follows the counting per interval binary maintenance, inden j the road user the control device at the end io only between zero vehicles or vehicles below-ί of intervals that are set before the green light is switched on, regardless of whether 1, 2 or 3 vehicle signals from the counting device at the junction have passed the counting cross-section,
assigned signal generator and before the Dk evaluation of the counting results with regard to their; Turning off this green signal ends, the number of effects on the green time-additions in time that the counting device calls up traffic participants counted at the relevant knee point during this interval, and one and in the relevant direction of travel can send their corresponding control signal in binary for the signaling device digital de-asaiog take place. It should "preferably form" that the switch-on time or the countdowns, which are in the temporal lead-up to the fictitious switching point of the green signal - preferably in the Gruad-Green phase in the counting cross-section, a deviation from the Gnind-Green band - corresponds to the corresponding temporal green time- Advance at the becheod of this number gradually or continuously meeting the intersection and change the direction in question in the relevant change. After another purposeful

A further development of the traffic signal control-related development of the invention can, however

rates can consist in the fact that there are also counts in the respective counts that are in advance of the Grur: d-

Traffic directions in front of the signal heads are located in the counting cross-section, a time-based

Pray pre- or intermediate signal generators with help- borrowed green time after-run at the relevant node

kung the Zänleinricntußgen controls as well as the point and be in the relevant traffic direction

Signal transmitter at the node. take effect if the total possible lead green

GeoäS another development of the invention does not time at the node for coping with the

If the traffic signal control device is sufficient for the green signals 30 vehicles counted in advance.

Grant a minimum duration of 8 to 10 seconds. Counts in the time lag for the fictitious

After an expedient development of the Er-Grund-Grünphase in the counting cross-section Hegen, should

The basic green phase can continuously correspond to the temporal green time

or in Zeitschritteri Grimzeit in advance in time at the relevant node in the relevant

or run-on can be added. According to the innovation 35 effect traffic direction. After another

Oäl expediently the basic green phase in time-step expedient further development of the invention

ten longer that have a minimum duration of, however, also counts that are delayed in time!

Do not fall below 2 seconds, as there are smaller to the basic green phase in the counting cross-section

Zeitschrilten no noticeable change in the lead time green time lead on the relevant

»The green phase can be achieved. 40 junction in the relevant traffic direction ir

Effect the total green duration for each reverse direction of the next following signal phase cycle

»Ought not to exceed a period of circulation by which, if the total possible after-run green riding avr

Not to lose traffic guidance. Therefore, the junction should not be used for coping with the subsequent

The sum of the vehicles counted from the basic green phase and green time inflow is sufficient.

gave be limited to a duration that is less than 45 An expedient development of the fiction

is the duration of a signal phase cycle. according to the traffic signal control device can also be used

According to a further expedient further development, there are the counts of the counting front Invention, the traffic signal control device should be binary or digital according to a program be designed that it evaluates the basic green phase with the proviso that it is a half of the duration of a sign & lphascn cycle temporally 5 ° number cross-section of. a counter sets in such a way that approximately the same time for green-time vehicles a green-time addition in time lag Allowances in the lead-up and on-carriage are available when the vehicle is in the green. time addition the node with the maxima

Σσ appropriate training of the invention should be the permissible or a smaller driving speed

for a junction and a traffic direction 55 can be run over, while otherwise it is db green time

decisive counting cross-section of the counting devices addition in the », temporal lead-up to the next

placed at a distance in front of the node arranged signal phase circulation

win, which is at least equal to the product of the total duration of those counts that make a green

do position of the basic green belt cause certain vehicle allowance !? can will be in the master

speed and the possible total duration for 60 cases of the total time of the share for the Griinz ^ ii

Crünzeil 'additions in the lead or lag. Da-additions correspond. The numerical values from the ver

isi achieved that registrations of an earliest remaining zoite in each signal phase umlau

Possibility of adding greenery to the associated node should generally have an earlier start

cause point. Green phase, i.e. a green time addition in time

The counts can cause over the duration of a 65 lead. In this rust counting time should

Signal phase overflow or outside of the ground, mainly those at the nodes in front of it

Griinbandes made in tough cross-section. In doing so, point in the relevant traffic direction

kMi the counting devices are recorded continuously or in curved vehicles. Those on green «

Green time additions taking place in this evaluation in the temporal Voitauf therefore have in the measured Fall the meaning of a> lead *. In the case of the Grünäseit additions required for this, soUie der large «time required as a result of the approach from the Stand to be withdrawn. For the evaluation is here, however, only cfe the total number of pent-up items Vehicles of importance and not the temporal distribution. When evaluating the installation a program for the length of the Griinzsit-Zagabe in advance should also t *; r larger Time limits may be taken into account for the reasons given above will. If the total duration of the possible green time addition in advance the corresponding counting area is not sufficient for this counted aircraft in good time before arriving Pulling away the vehicle bunch, this inevitably results in a deceleration of this vehicle bunch, which then through an appropriately sized green time addition be taken into account in the time lag got to.

The details of the invention set out so far preferably refer to main traffic directions without special consideration of the subordinate ones Qiserrichtuiigeii and the pedestrian who have to cross the main street. According to an advantageous embodiment of the invention Traffic signal controller can it periodically for the »cross traffic at the junctions a green phase allocated for the dkseia Qusrverkehr Ousrrichtuags & igna'fidier at your disposal, if there is a requirement for the corresponding counting regulations is present.

With the cross traffic to the main Veikehrsrichtuiigen must have two basic cases of inconvenience a distinction can be made:

1. Lower, compared to the traffic in the Haupt-Verkehrsrichhmg very subordinate Traffic. > :. B. 1 to 3 vehicles per Signaipftasenurnlauf and few ·, and

2. Heavy to heavy loads, e.g. B. 3 vehicles and more per signal phase rotation.

According to an expedient development of the invention, the green phase for the transverse direction has a minimum fixed time value for the first load zone so '· ^1. The same applies to pedestrian Gt \ im.euen parallel to cross traffic.

Soil after further development of the invention au for the second load case · green phase for transverse direction, starting before. a minimum fixed value in time steps or continuously up to?. » an adjustable maximum green time can be extended if corresponding requirements are given by one of the cross-markers. If the requirements on quei green practice the maximum green time available; step, the traffic signal control unit saves these requirements and takes them into account in the next signal phase cycle,

For the first debit failure it is advisable to to arrange the paying point at a short distance in front of the stop line, in the second case of birch load, on the other hand, the counting point should be arranged at a greater distance in front of the Haiieliti'je, in which case at least a lislteiinic arranged a tooth detector is. its payments with the counting results of the The drawing direction in front of the hiiüolinic was compared to see if in the cross direction incoming traffic during the loading process Green phase could leave the transverse direction. This ensures that in specially stored cases, such as B. very narrow Kreuzungsverhähmssec, relatively strong turn-offs, etc., the risk is eliminated, that the vehicle is there from the transverse direction in the designated green time »! Signal cannot pass and remain in the storage space without another Request can be made through this. The same detector arrangement can also to control the green times of the main traffic direction be used, however, there will be an urgent need for such an arrangement in this case seldom resulted, because of the always recurring basic green phase this danger is almost impossible.

The pedestrian traffic parallel to the transverse direction should be expediently on request even in the second load case, only a fixed minimum green time without the possibility of extension assign to.

In cases where the cross direction counter at a greater distance from the stop line and the additional detector arrangement should not be used, the traffic signal control device can in at least one transverse direction Time intervals corresponding to a max im al waiting time, Allow a green phase of the known minimum duration, albeit not a corresponding one Requirements exist.

With regard to the timing within the signal phase cycle duration for the cross-green phase the following points must be observed:

The green time additions over time to the basic green phase in the main traffic route often have the meaning of "preliminary," i. i.e., in the. first seconds is over with the start to count on the state and delayed driving in the following seconds. The time ranges of the The green are brought forward compared to the green allowances in time! I am after the basic green phase of lower efficiency. It is therefore advisable to include those for the transverse direction the time required for the transition phases as far as possible to the green admission area in advance of the main traffic direction subtract, but without restricting their basic green phase. Therefore, the traffic signal control device should the green phases of at least one transverse direction in that time '/ in which only minimum requirements for green time addition in the main street.

The details of the invention explained so far preferably related to a program a signal phase cycle duration. However, in order to change the traffic conditions, e.g. B. Night time, significantly lower or higher load in the entire street or network, street

^In order to do justice to the smoothness and the like, the signal phase duration can be adjusted on the traffic signal control device. preferably depending on the traffic.

The traffic signal control device described is not fixed once in its application

⁶ vS number of signaled nodes limited, but can be expanded in a structural way. In cases in which the traffic directions converging at a junction are always roughly the same

OO

are heavily loaded, can by means of an evaluation device a decision must be made as to which of the requirements for green time addition is to be given priority.

The times of effectiveness before = if necessary, »traffic signs arranged in front of the intersections and signaling facilities are determined by the basic green tape. The counting results should be the respective signal state, e.g. B. cüie speedometer, determine so that the

at intersections B and C is very enough and at intersection A it is stronger. Correspondingly, for the signal systems B and C TeSIg ( ¹ IcOt, Utiss in the A. “requirement trap” a fixed basic phase without the possibility of extension becomes effective, while for the signal system A two extension levels can be requested .

From the time-path diagram according to FIG. 5 isi nocii to be taken: At the node Λ were for

Traffic without stopping the next following signa! - io die Querrichli'.ngcn IJ. and! V pass the maximum green area canoe. time, ie basic time with x two levels of contingency. Due to lack of space you can «»! Gi is the unddung set forth in the drawings and demand time 1 and the Verlängerungsscluritte. and 3 not described below. inehf below the abscissa einseiclinet A '^ - iksn. 1 shows a time-path diagram for which only the green banti can be recognized. that the sus the traffic-dependent controlled signal arrangements to the
three neighboring road junctions A. B and C
is shown in FIG. 2 in plan, but with im
Strongly distorted «street widths are recorded. Fig. 3 shows the already in Zeit-We-g-Dia- a «
gram (Fig. 1) contained green times with the associated. Counting areas only for the sake of clarity
clearer description without drawing

Transverse directions in the main direction <r. G

represents vehicles turned at junction B.

These vehicles are on the Zalilquerschniü V in the four tooth valleys 12. 13, 1 um! 2 rcgisinen and cause the Fahrsigiiien das Ouuvhniues V to the facility B to bring the Grünbegjniv forward. around the four advance lines 5 to 2. As a result, the vehicles that are pent up at the stop line V at red will be withdrawn in good time with a lead time corresponding to their number.

At the signal cross-section I of the system Λ, the Gruud-GrünzcU 6 as a result of registration -or. Vehicles on the associated counting cross section! Γ ■ - here

Stop lines were consecutively with the digits) 30 not shown - ym the Vorraufstuien 4.5 and up to XlI beaeicb.net, the associated ones! Tough - the Nachiauistufen 7. S imu 9 extended. Dc; Stan cuts, with Y. to XiI '. The to the stop lines I and the sr.Azn vehicles takes place from the stand. This

are in the counting interval.! V 'S registers un-ΰ the advance at the signal cross-section V by a wider range. uic

net. For the present example! Green time is extended to the last available level VI. Additions chosen in time steps, for all As can be seen from the diagram. must find the green phases of the main directions 5 each to bring the green beginning forward (temporal lead time) and
5 for extension (time lag). they were
Likewise, on the outside signal cross-sections with the 40 key contacts !, the during the basic green digits 1 to S for the preliminary steps and aiii 7 bus phase 6 the cross-section \ passes through Falij-witness. Ii for the follow-up steps. Counting intervals were created on the associated counting cross-sections
with the same duration as the green time addition stage «

bi 5 d

the green strips as well as aiii a graphically stretched one Sign-alpha round-trip duration.

The 3 junctions are steep normal intersections each with 4 roads leading into it, all of which are signposted. All the roads that flow into it are in drive in both directions. The corresponding

LX belonging counter crossings Γ and ΧΓ were not shown for the sake of clarity

of the last counting component effective for VorlauCstuf-

p-r. the first failed

valis V "5 still ahead
GrünzeiJ-Vorlaufstuie V 1

which, without being registered at the counting cross-section V, in the underlying speed Cross-section V also wäiffende the basic Gnin-

g g

chosen, which also achieve the designation 1 to 5 and 45 phase 6.

7 to 11 received. In zest area 6 should not be counted will.

The counting intervals 12 and 13 monitor the time range of the difference time after the extension stage 11 corresponds to the first preliminary stage 1.

In this example, the evaluation should be binary, and every positive registration should be in one interval! cause an extension by one step, regardless of whether it is pre- or post-travel. The con-

To show that the density of vehicle traffic after passing through! The intersection is in some cases less large due to vehicles turning, gaps have been left in the green belt in these cases. In the example, a gap was left in the Granband in the direction from A to B (main direction 14) in the time range corresponding to the extension stage I 7 and the Granband was only continued again in stages IS and 9. the

Scruierte Gninddiagram is recognizable in Fig. 1 from the 55 practical Föhrweise des AufschlisSens Grand green phases of the main directions, denoted by 6 from the flatter compared to the basic green belt 16, and the connecting basic green belts inclination of the last-mentioned Grimband. The one to be recognized in 16. It can also be seen that people are driving in this area. Bunch of the basic green phases at the cross section V in the intervals 7, 8 and 9 will be registered in the Zähiquer node B , intersections V and VI coincide, equivalent to 60 and consequently the green time at the signal crossover with a partial point, while at the. Knoting cutV by the steps?., S and 9 lengthened Im and C the Grurid-green phases and the cross-cuts in the present example became the case! and III as well as the cross-sections. IX chosen that at the node Λ in the cross and XI are strongly offset from one another. The terms Π and IV, in turn, correspond to so many basic speeds based on requirements 55 has been saturated that the maximum green phase is actually drivable. must be sam (1 to 3). ϊη the assumption that

Regarding cross-traffic, no further registrations for an extension have been made before The present example assumes that this burden on the green phases of the main directions.

are, the Querriöhtungen 1 ί and IV to given point in time their Gninzcii.

The vehicles turning in the direction of ß are registered 3m counting cross-section V in the three counting intervals 10 to Ia and cause a further lengthening of a green line at cross-section A by the remaining two follow-up levels HO and i \ and a pre-selection level 5 in the following cycle, So is; ensures that vehicles turning in from ο he transverse direction reach the green phase when driving »© Hoch and are not backed up.

The onward journey of the vehicles in the direction of node C i> t from deir. Recognize time-distance diagram (Fig.?) Fcu. The processing of oncoming traffic 15 t «from intersection C to B takes place as follows in the example:

The transverse phase X, XII 1 requested from oci in the direction of B curved vehicles are registered at the Jtahiqucrschnitl VH 'in the two Intervaikn 13 and * t> 12, ur.d thus cause an “earlier green beginning in Sigüaique-intersection ViI around the two leading posts 5 and 4. The following vehicles k \ the Htvuptrrichtung pass a CJrünixit at the cross-section Xl in advance by four steps (I hh 5). You will be registered at the cross-section of the fence in the four intervals 2 to 5. You can only make the remaining three preliminary stages 1 to 3 effective, i.e. not: aste of the registered journeys Pre-run. This creates a delay cruti?. Beirr. Passing the SignaS- «juerschnitiss VIl, which is gazed by an automatic extension QO green time by an« extension step Ί t *. E>: c as a result of the next registration in the three counting intervals The extensions achieved then follow stages 8, 9 and 10 at this stage.

The Zcit-path diagram in FIG. 1 is closed trkcnnftf !. dsß at the K ^ viizungB at SiignakjuerschniiT V for the main direction 14. the possibility of extension voil and on Qucxschflitt VII for «o cJie! in the direction of the SS the possibility of extension! until were also exploited on one level. There> means. that in this signal phase cycle kf: ine Request for cross traffic has been made is or could not be effective in iW /.

Claims (4)

Patent claims: 1. Vexkehrssignalsteusrgerät for directing the traffic at a junction in one of s ^ Ous-rstraßea gokrtuzten, zr ». 'A main street with opposite directions of traffic, at several junctions Signal get> he are arranged that the traffic in front of the junctions stopping red), (Green) signals that release the traffic and preferably also issue (Ge! d) signals between them, whereby the green signals of the signal generators arranged one behind the other in each traffic direction of the main road according to a predetermined traffic speed plan (basic - green belt) in this Traffic direction switched on and switched off, characterized in that in the case of the main road and possibly also on the cross streets in front of the signal generators assigned to the junction (A, B, C) , the control device on the untie of intervals that precede the L ·; "-sdwltcn of the green signal of the signal generator assigned to the Zühieinriehtung at the node and end before switching off this Griinsigr.als, the number of road users counted by the counting device during this interval and a iiir corresponding control signal ίϋτ forms the Signalgeix'i that the . The switch-on point or the release of the green signal - preferably in g of; iem basic green band - changes the> er number gradually or continuously. 2. Verkehrssignaisleuervierät according to claim 1, characterized in that it is in the respective Verkehrsrichiunye-Tii \ or ilen signal generators before or Zwischenettsijinalgcber unier Mitbeituns the Zahleinriehiungen controls the Sigrsalgebc: at the node. 3. Traffic signahteuergerät according to claim i or / "dadvircri gekeiiti / eichnet that it is the Grüiivgiiitkf * a minimum duration of 8 to 10 seconds. 4. V'erkehrsMgna'.steuergerät according to one of claims' to 3, characterized in that the green time stepsfl, 2. 3. 4, S ₁ 7. 8, 9, JO, Jl, 12. Ii) a duration of have a minimum of 2 seconds 5. Traffic signals; turns into one of the Claims 1 bk 4. Yes <i characterized by that it is the sum of Gnind green phase (6)! and G! Ün? I'it encores limited to a duration that is less than the duration of a signal phase reversal? (? w). 6. Verkehrssignalsteuergciät according to one of the claims 1 to 5, characterized in that it is the basic green phase (6) within the duration of a signal phase cycle (tu) in time such kg! Follow-up are available. 7. Verkehrssigaalstsuergerät according to one de: the preceding claims, characterized in that the for the node (A, B, C) and a Vsrkehrsrichtuag (14,15) decisive counting cross-section (BI ', V, VII', DC ') of the counting devices Ln a distance in front of the node is augeordnct, which is at least equal to the; The product of the driving speed determined by the position of the Gnmd green belt and the possible total duration for Grünzeii additions in the pre-run or post-run. 8. Traffic signaling device according to one of the The preceding claims, characterized in that the counting devices operate continuously. 9. Verkehrssignalsteuergeräi according to one of claims 1 to 8, characterized in that the counting directions at counting intervals, preferably work with a minimum duration of 2 seconds. 10. Traffic signal control device according to claim 9, characterized in that the counting devices operate at intervals of only such a length, preferably 5 seconds, that a maximum of 3 vehicles within the Zälilquersclinitt of an interval and that the evaluation of the count is binary for each interval takes place, when only between zero vehicles and ti more than zero vehicles are distinguished, regardless of whether 1, 2 or 3 vehicles have the tough cross-section happened. 11. Traffic signal control device according to one of the The preceding claims, characterized in that it is used for counts in advance for Gnind green phase (6) on the counting cross section a counting device, a corresponding green time lead at the intersection effected in the relevant traffic direction. \O 12. Traffic signal control device according to one of the Providing claims, characterized in that it bsi counts that i in time advance to the basic green phase (6) on the tough cross-section a counting device lie, also a time- »j borrowed green time lag at the node in the Traffic direction concerned if the total possible green line at the intersection is not sufficient to cope with the vehicles counted in advance. ac. 13. Verkebrsfeignalsteuergeräi after one of the The preceding claims, characterized in that it is used in counts that follow on in time to the örund-Gnin phase (6) at the counting cross section a counter, a corresponding aj causes a green time lag at the intersection in the responsible traffic direction. 14. Verkehrssiignahteuergemt according to one of the preceding claims, characterized in that there is a temporal green time lead at the junction in the relevant traffic direction in the next following Sigsalphasen- for counts that are in the time lag for Gnind green phase (6) on the counting cross-section of a counting device. Circulation (tu) causes when the total possible green time at the junction is not sufficient to cope with the vehicles counted in the after-run. 15. Traffic signal control device according to one of the preceding claims, characterized in that it evaluates the counts of the counting devices binary or digital according to a program with the proviso that it assigns a green time addition to a vehicle counted on a number cross-section by a counting device in the temporal lag, if the vehicle can still drive over the junction with this green time addition at the maximum permissible or a lower driving speed, while otherwise it relocates the green time addition in the lead time of the next signal phase cycle (tu), 16. Traffic signal control device according to one of the preceding claims, characterized in that it periodically for the cross traffic at the node (AB C) a Griinpbase · for this "cross traffic associated Qnerrichtungs-Signalgeber (II, IV, VL VIII, X, XU) to Provides when a request is made by the corresponding metering devices (H ', IV, VI'. Viii ", X \ XH '). 17. Verke'hrssignalsteuergerät according to claim 16, characterized in that it is the green phase a minimum time fixed value is granted for the transverse direction. 18. Verkehrssignalsteuergeräi according to claim 17, characterized in that it is the green phase for a transverse direction, starting from a minimum fixed value in gauges odci continuously up to an adjustable maximum grinzeii. extended if an appropriate Request by a counting device assigned to the transverse direction. 19. VerkeTirssignaisteuergerat according to claim 18, characterized in that there are requirements on cross-green time that the available exceed the maximum green line, saves and in the next following Signalphasen-Umlaiif taken into account. 20. Traffic signal control device according to one of the The preceding claims, characterized in that in at least one transverse direction in the direction of travel a counting detector is arranged behind a stop line, its counts with the counting results the fixture in front of the stop line can be compared by the device, in order to determine whether traffic is flowing in the transverse direction during the running Green phase leave the cross direction box side. 21. Traffic signal control device according to one of the preceding claims, characterized. that there is at least one transverse direction in time intervals, which correspond to a maximum waiting time, grants a green phase of minimum duration, even if no corresponding requirements are present. 22. Traffic signal control device according to one of the preceding claims, characterized in that that it relocates the green phases of at least one transverse direction ic that time. : n the only one There is a minimum requirement for Griinzeit addition in the main street. 23. Traffic signal control device according to one of the preceding claims, characterized in that that on him the signal pair duration, preferably traffic-dependent, is changeable. Considered publications:
U.S. Patent No. 2,932ÖO3;
"Siemens-Zeitschrift", 1935, p. 173. 1 sheet of drawings 805 628/150 »13. 58 Q Bundesdnukerei Berlin