CN107016862B

CN107016862B - A kind of traffic lamp control method and system

Info

Publication number: CN107016862B
Application number: CN201710459271.7A
Authority: CN
Inventors: 林子羿
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2019-06-07
Anticipated expiration: 2037-06-16
Also published as: CN107016862A

Abstract

The embodiment of the invention provides a kind of traffic lamp control method and systems, it include: the first quantity according to the vehicle waited on major trunk roads, determine the corresponding duration of preset major trunk roads vehicle threshold range as the first long green light time, and be compared the destination number of vehicle unsanctioned on major trunk roads with destination number threshold value, determine the second long green light time on non-major trunk roads: when destination number is greater than destination number threshold value, the second long green light time is preset duration；When destination number is not more than destination number threshold value, according on non-major trunk roads it is equal to vehicle the second quantity, determine a length of second long green light time when preset non-master trunk road vehicle threshold range is corresponding.The technical solution provided through the embodiment of the present invention reasonably distributes traffic resource under the premise of guaranteeing major trunk roads priority pass.

Description

A kind of traffic lamp control method and system

Technical field

The present invention relates to technical field of traffic control, more particularly to a kind of traffic lamp control method and system.

Background technique

Since there are the vehicles, traffic control is also come into being, especially modern age, in order to guarantee the friendship of highly effective and safe Logical order, produces a series of traffic rules, and traffic lights is one of.Traditional traffic lights is using " fixed pairing " Mode is controlled, i.e. red light and green light time for showing the fixation duration of setting respectively.But with city vehicle ownership When rapid growth, especially different periods are larger by the vehicle flowrate diversity ratio at crossing, traditional traffic light control system is not Traffic pressure can be alleviated, it is more serious to will lead to congestion instead.

In order to solve the problems, such as that conventional traffic lamp control system cannot adapt to the uncertain of vehicle flowrate, currently, traffic lights Control method mainly using half induction control algolithm.Crossing is divided into major trunk roads and non-major trunk roads in half induction control algolithm, Vehicle flowrate on major trunk roads is far longer than the vehicle flowrate on non-major trunk roads, should the purpose of induction control algolithm be partly to guarantee major trunk roads Traffic keep smooth, the traffic only when the waiting vehicle on non-major trunk roads reaches the waiting number of setting, on major trunk roads Lamp becomes red light, and the traffic lights on non-major trunk roads becomes green light, and otherwise, the traffic lights on major trunk roads is green light always.

Under normal circumstances, the traffic lamp control method of half induction control algolithm can alleviate major trunk roads to a certain extent On traffic pressure.However, at dead of night etc. particular times when, there is no vehicle pass-through on major trunk roads, rather than have vehicle on major trunk roads When waiting but being not up to the waiting number of setting, at this moment the vehicle on non-major trunk roads just needs to wait always.In this way, resulting in The waste of traffic resource and serious unreasonable distribution.

Summary of the invention

The embodiment of the present invention is designed to provide a kind of traffic lamp control method and system, to realize the conjunction of traffic resource Reason distribution.Specific technical solution is as follows:

In a first aspect, the embodiment of the invention provides a kind of traffic lamp control method, applied to the traffic lights of crossroad, The crossroad is divided into major trunk roads and non-major trunk roads, and the traffic lights includes the first traffic lights for controlling major trunk roads vehicle pass-through And the second traffic lights that the non-master trunk road vehicle of control is current；The described method includes:

The first predetermined time before the first traffic lights becomes green light by red light, obtains the vehicle waited on the major trunk roads The first quantity；

Preset major trunk roads vehicle threshold range in the first quantitative range group corresponding to first quantity is determined, by institute The corresponding duration of preset major trunk roads vehicle threshold range is stated as the first long green light time；

The second predetermined time before the green light becomes next red light, obtains the vehicle waited on the major trunk roads Destination number, and judge whether the destination number is greater than preset destination number threshold value；

If the destination number is greater than the destination number threshold value, corresponding second traffic of next red light is determined Second long green light time of lamp is preset duration；

If the destination number is not more than the destination number threshold value, the second quantity model corresponding to the second quantity is determined Preset non-master trunk road vehicle threshold range in group is enclosed, the corresponding duration of the preset non-master trunk road vehicle threshold range is made For second long green light time, wherein second quantity is that second traffic lights is become the third before green light by red light Predetermined time, on the non-major trunk roads it is equal to vehicle quantity, wherein the preset non-master trunk road vehicle threshold range pair The maximum value for the duration answered is not more than the minimum value of the corresponding duration of the preset major trunk roads vehicle threshold range.

Optionally, the first quantitative range group is divided by the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value At three continuous major trunk roads vehicle threshold ranges, wherein the first major trunk roads vehicle threshold range is not more than the first major trunk roads vehicle Threshold value；Third major trunk roads vehicle threshold range is not less than the second major trunk roads vehicle threshold value；Second major trunk roads vehicle threshold range Between the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value；

Preset major trunk roads vehicle threshold range in first quantitative range group corresponding to determination first quantity, Using the corresponding duration of the preset major trunk roads vehicle threshold range as the step of the first long green light time, comprising:

Determine the corresponding first major trunk roads vehicle threshold range of first quantity, the second major trunk roads vehicle threshold range still Third major trunk roads vehicle threshold range；

When first quantity corresponds to the first major trunk roads vehicle threshold range or the third major trunk roads vehicle threshold value When range, by the first major trunk roads vehicle threshold range or the corresponding default fixation of the third major trunk roads vehicle threshold range Duration is as first long green light time；Wherein, the corresponding default fixed duration of the first major trunk roads vehicle threshold range is small In the corresponding default fixed duration of the third major trunk roads vehicle threshold range；

When first quantity corresponds to the second major trunk roads vehicle threshold range, calculated according to preset first algorithm First long green light time.

Optionally, the second quantitative range group is by the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value It is divided into three continuous non-master trunk road vehicle threshold ranges, wherein the first non-master trunk road vehicle threshold range is not more than first Non-master trunk road vehicle threshold value；The non-master trunk road vehicle threshold range of third is not less than the second non-master trunk road vehicle threshold value；Second is non-master Trunk road vehicle threshold range is between the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value；

Preset non-master trunk road vehicle threshold value model in second quantitative range group corresponding to determination second quantity It encloses, using the corresponding duration of the preset non-master trunk road vehicle threshold range as corresponding second traffic of the next red light The step of second long green light time of lamp, comprising:

Determine second quantity corresponding first non-master trunk road vehicle threshold range, the second non-master trunk road vehicle threshold range Or the non-master trunk road vehicle threshold range of third；

When second quantity corresponds to the described first non-master trunk road vehicle threshold range or the non-master trunk road vehicle of the third It is when threshold range, the described first non-master trunk road vehicle threshold range or the non-master trunk road vehicle threshold range of the third is corresponding Default fixed duration is as second long green light time；Wherein, the described first non-master trunk road vehicle threshold range is corresponding default Fixed duration is less than the corresponding default fixed duration of the non-master trunk road vehicle threshold range of the third；

When second quantity corresponds to the described second non-master trunk road vehicle threshold range, according to preset second algorithm meter Calculate second long green light time.

Optionally, described the step of first long green light time is calculated according to preset first algorithm, comprising:

By the numerical value of first quantity divided by 10, the first numerical value is obtained；

Judge whether first numerical value has decimal place, when first numerical value has decimal place, removes decimal place and incite somebody to action Integer-bit adds 1, obtains second value；When first numerical value does not have decimal place, the second value is equal to first number Value；

By the second value multiplied by 10, the corresponding numerical value of first long green light time is obtained.

Optionally, described the step of second long green light time is calculated according to preset second algorithm, comprising:

By the numerical value of second quantity divided by 10, third value is obtained；

Judge whether the third value has decimal place, when the third value has decimal place, removes decimal place and incite somebody to action Integer-bit adds 1, obtains the 4th numerical value；When the third value does not have decimal place, the 4th numerical value is equal to the third number Value；

By the 4th numerical value multiplied by 10, the corresponding numerical value of second long green light time is obtained.

Second aspect, the embodiment of the invention provides a kind of traffic light control system, applied to the traffic lights of crossroad, The crossroad is divided into major trunk roads and non-major trunk roads, and the traffic lights includes the first traffic lights for controlling major trunk roads vehicle pass-through And the second traffic lights that the non-master trunk road vehicle of control is current；The traffic light control system include: the first detector of traffic information, Programmable logic controller (PLC), the second detector of traffic information；

First detector of traffic information, when default for first before the first traffic lights becomes green light by red light It carves, obtains the first quantity of the vehicle waited on the major trunk roads；

The programmable logic controller (PLC) waits on the major trunk roads for obtaining in first detector of traffic information Vehicle the first quantity after, determine preset major trunk roads vehicle in the first quantitative range group corresponding to first quantity Threshold range, using the corresponding duration of the preset major trunk roads vehicle threshold range as the first long green light time；

First detector of traffic information, when default for second before the green light becomes next red light It carves, obtains the destination number of the vehicle waited on the major trunk roads, and judge whether the destination number is greater than preset target Amount threshold；

The programmable logic controller (PLC) waits on the major trunk roads for obtaining in first detector of traffic information Vehicle destination number, and judge the destination number be greater than the destination number threshold value after, determine described next red Second long green light time of corresponding second traffic lights of lamp is preset duration；Alternatively, being obtained in first detector of traffic information Take the destination number of the vehicle waited on the major trunk roads, and judge the destination number no more than the destination number threshold value it Afterwards, preset non-master trunk road vehicle threshold range in the second quantitative range group corresponding to second quantity is determined, it will be described The corresponding duration of preset non-master trunk road vehicle threshold range is as second long green light time, wherein second quantity is Second traffic lights is become the third predetermined time before green light by red light, acquired in second detector of traffic information On the non-major trunk roads it is equal to vehicle quantity, wherein the corresponding duration of the preset non-master trunk road vehicle threshold range Maximum value duration corresponding no more than the preset major trunk roads vehicle threshold range minimum value.

The programmable logic controller (PLC) waits on the major trunk roads for obtaining in first detector of traffic information Vehicle the first quantity after, be specifically used for:

When first quantity corresponds to the third major trunk roads vehicle threshold range, calculated according to preset first algorithm First long green light time.

The programmable logic controller (PLC) waits on the major trunk roads for obtaining in first detector of traffic information Vehicle destination number, and judge that the destination number no more than after the destination number threshold value, is specifically used for:

Optionally, the programmable logic controller (PLC), is specifically used for:

In a kind of technical solution provided in an embodiment of the present invention, according to the first quantity of the vehicle waited on major trunk roads, really The corresponding duration of fixed preset major trunk roads vehicle threshold range is as the first long green light time, and by vehicle unsanctioned on major trunk roads Destination number be compared with destination number threshold value, determine the second long green light time on non-major trunk roads: when destination number is greater than The second long green light time is preset duration when destination number threshold value；When destination number is not more than destination number threshold value, according to non- Second quantity of the vehicle waited on major trunk roads determines when preset non-master trunk road vehicle threshold range is corresponding that a length of second is green Lamp duration.The technical solution provided through the embodiment of the present invention, the long green light time on major trunk roads is according to the vehicle waited on major trunk roads Quantity determined that the long green light time on non-major trunk roads is according in the quantity of vehicle unsanctioned on major trunk roads and non-major trunk roads Two factors of vehicle of waiting determine jointly, in this way, reasonably distributing traffic money under the premise of guaranteeing major trunk roads priority pass Source.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is a kind of application scenario diagram of traffic lamp control method provided in an embodiment of the present invention；

Fig. 2 is a kind of a kind of flow chart of traffic lamp control method provided in an embodiment of the present invention；

Fig. 3 is the specific flow chart of step S202 in embodiment illustrated in fig. 2；

Fig. 4 is the specific flow chart of step S205 in embodiment illustrated in fig. 2；

Fig. 5 is a kind of a kind of structural schematic diagram of traffic light control system provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

In order to realize the reasonable distribution of traffic resource, the embodiment of the invention provides a kind of traffic lamp control method and it is System.

As shown in Figure 1, the embodiment of the present invention is applied to the traffic lights of crossroad, crossroad is divided into 100 He of major trunk roads The traffic lights of non-major trunk roads 200, control 100 vehicle pass-through of major trunk roads is the first traffic lights 110, controls non-200 vehicle of major trunk roads The second current traffic lights 210.Under normal circumstances, the vehicle flowrate on major trunk roads 100 is greater than the vehicle flowrate on non-major trunk roads 200, Therefore, principle of the control of traffic lights according to major trunk roads priority pass, non-200 moment of major trunk roads cooperation major trunk roads 100 are to ensure City road network it is unimpeded.

The embodiment of the present invention at this with one of them first traffic lights 110 on major trunk roads 100, on non-major trunk roads 200 Traffic lamp control method of the invention is illustrated for one of them second traffic lights 210.Also, on major trunk roads 100 The first traffic lights 110 when being green light, the vehicle on each lane of major trunk roads 100 all presses that road surface identification is current, i.e., road surface identification is Vehicle straight trip on the lane of straight trip, road surface identification are that the vehicle on left turn lane turns left to pass through；In the first traffic lights 110 by green After lamp becomes red light, the second traffic lights 210 on non-major trunk roads 200 becomes green light from red light, at this point, each vehicle of non-major trunk roads 200 Vehicle on road is current by road surface identification, i.e., road surface identification is the vehicle straight trip on Through Lane, and road surface identification is left turn lane On vehicle turn left pass through.

It is understood that the application of the embodiment of the present invention is not limited only to above situation, T-shaped road junction can also be applied to Traffic light control.

A kind of traffic lamp control method provided in an embodiment of the present invention is introduced first below.

As shown in Fig. 2, a kind of traffic lamp control method provided in an embodiment of the present invention, includes the following steps:

S201, the first predetermined time before the first traffic lights becomes green light by red light, obtain on the major trunk roads etc. To vehicle the first quantity.

First predetermined time is that the first traffic lights is become the time point before green light by red light, also, this first it is default when It is longer to can be the time between at the time of customized setting, the first predetermined time and the first traffic lights become green light by red light quarter, So the first acquired quantity may be bigger with actual error.Therefore, in order to reduce accessed the first quantity and reality Error, the first predetermined time is closer at the time of should being arranged to become green light by red light from the first traffic lights.For example, first 1 second or 2 seconds before at the time of the first traffic lights becomes green light by red light can be set in predetermined time.

The method for obtaining the first quantity of the vehicle waited can be to be obtained by detector of traffic information, wherein traffic Information detector can detecte the vehicle of static vehicle and movement, be further divided into video detector according to performance, coil is examined Survey device, microwave detector etc..Detector of traffic information obtains corresponding detection data by detecting to each lane.

Illustratively, video detector is monitored lane by camera, wherein a camera can cover 3 vehicles Road, detection range is up to 50-150 meters；When needing larger range of detection, can different points be arranged camera, pass through by The camera of each point is associated together, can further expansion detection range.Currently, detector of traffic information is static to lane For the accuracy rate of vehicle detection up to 95%, the detector of traffic information of high-accuracy is more advantageous to rationally setting major trunk roads and non-master The long green light time of arterial highway, to more reasonably distribute path resource.

It should be noted that the first quantity in the present embodiment is dimension word, it is the word of tape unit, and after specification The numerical value of first quantity mentioned by face is then the number of not tape unit.For example, the vehicle waited on the major trunk roads got has 60, then the first quantity is 60, and the numerical value of the first quantity is 60.

S202 determines preset major trunk roads vehicle threshold value model in the first quantitative range group corresponding to first quantity It encloses, using the corresponding duration of the preset major trunk roads vehicle threshold range as the first long green light time.

In order to be accurately determined the duration of major trunk roads green light, the first quantitative range group can be preset, in the first quantity model It encloses in group, presets multiple major trunk roads vehicle threshold ranges and multiple durations, also, major trunk roads vehicle threshold range and duration are in pair It should be related to, optionally, different major trunk roads vehicle threshold ranges corresponds to different durations.

Wherein, duration can be there are two types of type: a kind of duration is fixed value；Another duration is by preset algorithm meter Obtained value is calculated, in this case, obtained duration can be different.

Illustratively, one of threshold range in multiple major trunk roads vehicle threshold ranges is vehicle number less than 60, should A length of 60 seconds when corresponding to threshold range, then, when the first quantity is 50, vehicle number is less than 60, and the threshold value model It is 60 seconds a length of when enclosing corresponding, at this point, the first long green light time is 60 seconds.

Illustratively, one of threshold range in multiple major trunk roads vehicle threshold ranges are as follows: vehicle number be greater than 60 and Less than 120；A length of obtained value of preset algorithm, the preset algorithm when corresponding to the threshold range specifically: the first number The numerical value of amount is equal with the numerical value of duration corresponding to the threshold range, i.e. the numerical value of the first quantity is how many, then corresponding The numerical value of duration be how many.When the first quantity is 70, vehicle number is greater than 60 and less than 120, according to preset algorithm 70 seconds a length of when can be obtained corresponding, therefore, the first long green light time is 70 seconds；When the first quantity is 110, according to default Algorithm is 110 seconds a length of when can be obtained corresponding, at this point, the first long green light time is 110 seconds.

It should be noted that correspondence refers in corresponding threshold range, example in embodiment provided by the present invention Such as, preset major trunk roads vehicle threshold range in the first quantitative range group corresponding to the first quantity, refers to the first quantity pre- If major trunk roads vehicle threshold range in.

S203, the second predetermined time before the green light becomes next red light, obtains and waits on the major trunk roads Vehicle destination number, and judge whether the destination number is greater than preset destination number threshold value；When being judged as YES, execute S204 when being judged as NO, executes S205.

It can be that green light becomes amber light, amber light becomes red light again in the detailed process that the green light becomes next red light Process.Second predetermined time is that the first traffic lights is become the time point before red light by green light, also, second predetermined time can It is longer with the time between at the time of to be customized setting, the second predetermined time and the first traffic lights become red light by green light, then Acquired destination number may be bigger with actual error.Therefore, in order to reduce accessed destination number and actual mistake Difference, the second predetermined time are closer at the time of should being arranged to become red light by green light from the first traffic lights.For example, second is default Moment can be set at the time of the first traffic lights becomes red light by green light before 1 second or 2 seconds.

Optionally, time difference between at the time of the second predetermined time and the first traffic lights become red light by green light can be with Time difference setting between at the time of first predetermined time and the first traffic lights become green light by red light is identical.Illustratively, second Predetermined time is set as at the time of 1 second before at the time of the first traffic lights becomes red light by green light, the setting of the first predetermined time For 1 second before at the time of the first traffic lights becomes green light by red light at the time of.

The destination number of the vehicle waited on the major trunk roads that the second predetermined time obtains is also unsanctioned on major trunk roads The quantity of vehicle needs to wait next green light ability P Passable.

It is unobstructed on major trunk roads in order to guarantee because of the principle of major trunk roads priority pass, it needs to not passing through on major trunk roads Vehicle be monitored；If unsanctioned vehicle is relatively more on major trunk roads, comparison that the long green light time of non-major trunk roads can be arranged It is short, and if when unsanctioned vehicle is fewer on major trunk roads, the long green light time on non-major trunk roads can be set longer.

The destination number that will acquire is compared with preset destination number threshold value, and it is default to judge whether destination number is greater than Destination number threshold value, wherein destination number threshold value can be customized setting, specifically, can rule of thumb or system It counts and obtains suitable threshold value, for example, it is 60 that destination number threshold value, which can be set,.

S204 determines next red light corresponding the if the destination number is greater than the destination number threshold value Second long green light time of two traffic lights is preset duration.

In the case where destination number is greater than destination number threshold value, at this point, unsanctioned vehicle is more on major trunk roads, need By the shorter of the long green light time setting on non-major trunk roads, accordingly, it is determined that the second long green light time is preset duration.Wherein, this Two long green light times with the duration of next red light on major trunk roads be it is corresponding, it is a length of when this is preset customized to preset Fixation duration value, for example, a length of 30 seconds when can be set preset.

S205 is determined corresponding to second quantity if the destination number is not more than the destination number threshold value Preset non-master trunk road vehicle threshold range in second quantitative range group, by the preset non-master trunk road vehicle threshold range pair The duration answered is as second long green light time.

Preset non-master trunk road vehicle threshold range in second quantitative range group corresponding to second quantity refers to the second number Amount is in preset non-master trunk road vehicle threshold range.Wherein, the second quantity be the second traffic lights by red light become green light it Preceding third predetermined time, on non-major trunk roads it is equal to vehicle quantity.

Wherein, third predetermined time can be customized setting, and third predetermined time is become with the second traffic lights by red light The time is longer between at the time of green light, then the second acquired quantity may be bigger with actual error.Therefore, in order to reduce The second quantity and actual error got, third predetermined time should be arranged to become green light by red light from the second traffic lights At the time of it is closer.For example, third predetermined time can be set at the time of the second traffic lights becomes green light by red light before 1 At the time of second or 2 seconds.

Optionally, time difference between at the time of third predetermined time and the second traffic lights become green light by red light can be with Time difference, the second predetermined time and first between at the time of first predetermined time and the first traffic lights become green light by red light hand over Time difference between at the time of logical lamp becomes red light by green light is respectively provided with identical.Illustratively, third predetermined time is set as At the time of 1 second before at the time of two traffic lights become green light by red light, the second predetermined time is set as in the first traffic lights by green At the time of 1 second before at the time of lamp becomes red light, the first predetermined time is set as becoming green light by red light in the first traffic lights Before moment at the time of 1 second.

Further, in the case where destination number is not more than destination number threshold value, at this point, unsanctioned vehicle on major trunk roads It is less, the long green light time on non-major trunk roads can be arranged longer, and the long green light time on non-major trunk roads can basis On non-major trunk roads it is equal to vehicle quantity setting.

Second quantitative range group be it is preset, in the second quantitative range group, preset multiple non-master trunk road vehicles Threshold range and multiple durations, also, non-master trunk road vehicle threshold range and duration are in corresponding relationship, i.e., different non-major trunk roads Vehicle threshold range corresponds to different durations.

Illustratively, one of threshold range in multiple non-master trunk road vehicle threshold ranges is vehicle number less than 30, A length of 30 seconds when corresponding to the threshold range, then, when the second quantity is 20, vehicle number is less than 30, and the threshold value A length of 30 seconds when corresponding to range, at this point, the second long green light time is 30 seconds.

Illustratively, one of threshold range in multiple non-master trunk road vehicle threshold ranges are as follows: vehicle number is greater than 30 And less than 60；A length of obtained value of preset algorithm, the preset algorithm when corresponding to the threshold range specifically: the second number The numerical value of amount is equal with the numerical value of duration corresponding to the threshold range, i.e. the numerical value of the second quantity is how many, then corresponding The numerical value of duration be how many.When the second quantity is 40, vehicle number is greater than 30 and less than 60, can according to preset algorithm 40 seconds a length of when obtaining corresponding, therefore, the first long green light time is 40 seconds；When the second quantity is 55, according to pre- imputation Method is 55 seconds a length of when can be obtained corresponding, at this point, the second long green light time is 55 seconds.

Further, because will with the principle of major trunk roads priority pass, the vehicle no matter waited on major trunk roads how many, it is main The time of each vehicle pass-through is centainly not less than the time of each vehicle pass-through on non-major trunk roads, i.e. green light on major trunk roads on arterial highway Duration be centainly not less than the duration of green light on non-major trunk roads.Therefore, when preset non-master trunk road vehicle threshold range is corresponding Long maximum value is not more than the minimum value of the corresponding duration of the preset major trunk roads vehicle threshold range.Illustratively, preset The maximum value of the corresponding duration of non-master trunk road vehicle threshold range is 60 seconds, and the preset major trunk roads vehicle threshold range is corresponding Duration minimum value be 60 seconds.

In conjunction with above-described embodiment, the present invention also provides another specific embodiments, as shown in figure 3, above-mentioned steps S202, goes back May include:

S301 determines first quantity corresponding first major trunk roads vehicle threshold range, the second major trunk roads vehicle threshold value model Enclose still third major trunk roads vehicle threshold range.

First quantitative range group is divided into three continuously by the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value Major trunk roads vehicle threshold range, wherein the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value can be customized Setting.

The three continuous major trunk roads vehicle threshold ranges divided are respectively as follows: the first major trunk roads vehicle threshold range, second Major trunk roads vehicle threshold range and third major trunk roads vehicle threshold range.Wherein, the first major trunk roads vehicle threshold range is not more than First major trunk roads vehicle threshold value；Third major trunk roads vehicle threshold range is not less than the second major trunk roads vehicle threshold value；Second major trunk roads Vehicle threshold range is between the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value.

Illustratively, when the first major trunk roads vehicle threshold value is 60, the second major trunk roads vehicle threshold value is 120, first is main Trunk road vehicle threshold range is less than or equal to 60, and the second major trunk roads vehicle threshold range is greater than 60 and less than 120 , third major trunk roads vehicle threshold range is more than or equal to 120.

Determine the corresponding first major trunk roads vehicle threshold range of first quantity, the second major trunk roads vehicle threshold range still Third major trunk roads vehicle threshold range.Illustratively, the range when the first quantity is 80, being greater than 60 and less than 120 It is interior, accordingly, it is determined that the first quantity is in the second major trunk roads vehicle threshold range.

S302, when first quantity corresponds to the first major trunk roads vehicle threshold range or the third major trunk roads vehicle It is when threshold range, the first major trunk roads vehicle threshold range or the third major trunk roads vehicle threshold range is corresponding default Fixed duration is as first long green light time.

Preset each major trunk roads vehicle threshold range and duration are in one-to-one relationship in first quantitative range group, i.e., and first The corresponding default fixed duration T1 of major trunk roads vehicle threshold range, the second major trunk roads vehicle threshold range correspond to duration T2, third master The corresponding default fixed duration T3 of trunk road vehicle threshold range, wherein T1, T2, T3 can be different.

When the corresponding first major trunk roads vehicle threshold range of the first quantity, the first long green light time is the first major trunk roads vehicle threshold It is worth default fixed duration T1 corresponding to range；When the first quantity corresponds to third major trunk roads vehicle threshold range, the first green light Default fixed duration T3 corresponding to Shi Changwei third major trunk roads vehicle threshold range.

Further, because the vehicle waited on major trunk roads is more, longer long green light time is more needed so as to clamp on Vehicle passage as much as possible, therefore, the corresponding default fixed duration of the first major trunk roads vehicle threshold range are less than third trunk The corresponding default fixed duration of road vehicle threshold range.

Illustratively, the first major trunk roads vehicle threshold range is the third major trunk roads vehicle threshold value model less than or equal to 60 It encloses for more than or equal to 120.If the time that each car passes through crossing is 1 second, then the first major trunk roads vehicle can be set Default fixed duration T1 corresponding to threshold range is 60 seconds, when default fixed corresponding to third major trunk roads vehicle threshold range Long T3 is 120 seconds,.When the first quantity is less than 60, then the first long green light time is 60 seconds at this time；When the first quantity is greater than 120 When, at this point, the first long green light time be 120 seconds.

S303 is calculated when first quantity corresponds to the second major trunk roads vehicle threshold range according to preset first Method calculates first long green light time.

Second major trunk roads vehicle threshold range between the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value, when When first quantity is between the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value, calculated according to preset first algorithm First long green light time.

A kind of embodiment that the first long green light time is calculated according to preset first algorithm is into a method: by the first quantity Numerical value obtains the first numerical value divided by 10；Judge whether the first numerical value has decimal place, when the first numerical value has decimal place, removes small Integer-bit is simultaneously added 1 by numerical digit, obtains second value；When the first numerical value does not have decimal place, second value is equal to the first numerical value；It will Second value obtains the corresponding numerical value of the first long green light time multiplied by 10.

Illustratively, when the first major trunk roads vehicle threshold value is 60, the second major trunk roads vehicle threshold value is 120, second is main Trunk road vehicle threshold range is greater than 60 and less than 120, and when the first quantity is 75, the numerical value of the first quantity is 75, According to above embodiment, can obtain the first numerical value is 7.5, and the first numerical value is the numerical value of mixed decimal position at this time, then by can into a method Obtaining second value is 8, so that it is 80 that the corresponding numerical value of the first long green light time, which finally can be obtained, then the first long green light time is 80 Second.

In another embodiment, each car is set by the time at crossing as 1 second, then when the vehicle waited on major trunk roads How many when just to the time in requisition for how many seconds.Therefore, when the first quantity is in the first major trunk roads vehicle threshold value and second When between major trunk roads vehicle threshold value, then the numerical value of the first long green light time is set as the numerical value of first quantity.

Illustratively, when the first major trunk roads vehicle threshold value is 60, the second major trunk roads vehicle threshold value is 120, second is main Trunk road vehicle threshold range is greater than 60 and less than 120, and when the first quantity is 68, the numerical value of the first quantity is 68, So, the numerical value of the first long green light time is 68, is 68 seconds so as to obtain the first long green light time.

In conjunction with above-described embodiment, the present invention also provides another specific embodiments, as shown in figure 4, above-mentioned steps S205, goes back May include:

S401 determines second quantity corresponding first non-master trunk road vehicle threshold range, the second non-master trunk road vehicle threshold It is worth range or the non-master trunk road vehicle threshold range of third.

Second quantitative range group is divided into three by the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value Continuous non-master trunk road vehicle threshold range, wherein the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value are equal It customized can set.

Divide three continuous non-master trunk road vehicle threshold ranges be respectively as follows: the first non-master trunk road vehicle threshold range, Second non-master trunk road vehicle threshold range and the non-master trunk road vehicle threshold range of third.Wherein, the first non-master trunk road vehicle threshold value Range is not more than the first non-master trunk road vehicle threshold value；The non-master trunk road vehicle threshold range of third is not less than the second non-master trunk road vehicle Threshold value；Second non-master trunk road vehicle threshold range the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value it Between.

Illustratively, when the first non-master trunk road vehicle threshold value is 30, the second non-master trunk road vehicle threshold value is 60, first Non-master trunk road vehicle threshold range is less than or equal to 30, and the second non-master trunk road vehicle threshold range is greater than 30 and small In 60, the non-master trunk road vehicle threshold range of third is more than or equal to 60.

Determine second quantity corresponding first non-master trunk road vehicle threshold range, the second non-master trunk road vehicle threshold range Or the non-master trunk road vehicle threshold range of third.Illustratively, when the second quantity is 40, greater than 30 and less than 60 In range, accordingly, it is determined that the second quantity is in the second non-master trunk road vehicle threshold range.

S402, when second quantity corresponds to the described first non-master trunk road vehicle threshold range or the non-major trunk roads of the third When vehicle threshold range, by the described first non-master trunk road vehicle threshold range or the non-master trunk road vehicle threshold range pair of the third The duration answered is as second long green light time.

Preset each non-master trunk road vehicle threshold range and duration are in one-to-one relationship in second quantitative range group, i.e., and the The corresponding default fixed duration t1 of one non-master trunk road vehicle threshold range, the second non-master trunk road vehicle threshold range correspond to duration t2, The corresponding default fixed duration t3 of the non-master trunk road vehicle threshold range of third, wherein t1, t2, t3 can be different.

When the corresponding first non-master trunk road vehicle threshold range of the second quantity, the second long green light time is the first non-major trunk roads vehicle Default fixed duration t1 corresponding to threshold range；When the second quantity corresponds to the non-master trunk road vehicle threshold range of third, Two long green light times are default fixed duration t3 corresponding to the non-master trunk road vehicle threshold range of third.

Further, because the vehicle waited is more, longer long green light time is more needed so that the vehicle to clamp on to the greatest extent may be used Passage more than energy, therefore, the corresponding default fixed duration of the first non-master trunk road vehicle threshold range are less than the non-major trunk roads vehicle of third The corresponding default fixed duration of threshold range.

Illustratively, the first non-master trunk road vehicle threshold range is the non-master trunk road vehicle threshold of third less than or equal to 30 Being worth range is more than or equal to 60.If the time that each car passes through crossing is 1 second, then the first non-major trunk roads can be set Duration t1 corresponding to vehicle threshold range is 30 seconds, and duration t3 corresponding to the non-master trunk road vehicle threshold range of third is 60 Second,.When the second quantity is less than 30, then the second long green light time is 30 seconds at this time；When the second quantity is greater than 60, at this point, Second long green light time is 60 seconds.

S403, when second quantity corresponds to the described second non-master trunk road vehicle threshold range, according to preset second Algorithm calculates second long green light time.

Second non-master trunk road vehicle threshold range is the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value Between, when the second quantity is between the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value, according to preset Second algorithm calculates the second long green light time.

A kind of embodiment that the second long green light time is calculated according to preset second algorithm is into a method: by the second quantity Numerical value obtains third value divided by 10；Judge whether third value has decimal place, when third value has decimal place, removes small Integer-bit is simultaneously added 1 by numerical digit, obtains the 4th numerical value；When third value does not have decimal place, the 4th numerical value is equal to third value；It will 4th numerical value obtains the corresponding numerical value of the second long green light time multiplied by 10.

Illustratively, when the first non-master trunk road vehicle threshold value is 30, the second non-master trunk road vehicle threshold value is 60, second Non-master trunk road vehicle threshold range is greater than 30 and less than 60, and when the second quantity is 45, the numerical value of the second quantity is 45, according to above embodiment, can obtain third value is 4.5, and third value is the numerical value of mixed decimal position at this time, then by into a method It is 5 that the 4th numerical value, which can be obtained, so that it is 50 that the corresponding numerical value of the second long green light time, which finally can be obtained, then the second long green light time is 80 Second.

In another embodiment, set each car by time at crossing as 1 second, then when on non-major trunk roads grade to Vehicle how many when just to the time in requisition for how many seconds.Therefore, when the second quantity the first non-master trunk road vehicle threshold value with When between the second non-master trunk road vehicle threshold value, then the numerical value of the second long green light time is set as the numerical value of second quantity.

Illustratively, when the first non-master trunk road vehicle threshold value is 30, the second non-master trunk road vehicle threshold value is 60, second Non-master trunk road vehicle threshold range is greater than 30 and less than 60, and when the second quantity is 48, the numerical value of the second quantity is 48, then, the numerical value of the second long green light time is 48, is 48 seconds so as to obtain the second long green light time.

Corresponding to the embodiment of the method for above-mentioned offer, the embodiment of the present invention also provides a kind of traffic light control system, application Traffic lights in crossroad, the crossroad are divided into major trunk roads and non-major trunk roads, and the traffic lights includes control major trunk roads The second current traffic lights of the first traffic lights and the non-master trunk road vehicle of control of vehicle pass-through, as shown in figure 5, the traffic lights control System processed includes: the first detector of traffic information 510, programmable logic controller (PLC) 520, the second detector of traffic information 530；

First detector of traffic information 510, it is pre- for first before the first traffic lights becomes green light by red light If the moment, the first quantity of the vehicle waited on the major trunk roads is obtained；

The programmable logic controller (PLC) 520, for obtaining the major trunk roads in first detector of traffic information 510 After first quantity of the vehicle of upper waiting, preset trunk in the first quantitative range group corresponding to first quantity is determined Road vehicle threshold range, using the corresponding duration of the preset major trunk roads vehicle threshold range as the first long green light time；

First detector of traffic information 510, it is default for second before the green light becomes next red light At the moment, the destination number of the vehicle waited on the major trunk roads is obtained, and judges whether the destination number is greater than preset mesh Mark amount threshold；

The programmable logic controller (PLC) 520, for obtaining the major trunk roads in first detector of traffic information 510 The destination number of the vehicle of upper waiting, and judge the destination number be greater than the destination number threshold value after, determine it is described under Second long green light time of corresponding second traffic lights of one red light is preset duration；Alternatively, being examined in first traffic information It surveys device 510 and obtains the destination number of the vehicle waited on the major trunk roads, and judge the destination number no more than the target After amount threshold, preset non-master trunk road vehicle threshold value model in the second quantitative range group corresponding to second quantity is determined It encloses, using the corresponding duration of the preset non-master trunk road vehicle threshold range as second long green light time, wherein described Two quantity are that second traffic lights is become the third predetermined time before green light, second detector of traffic information by red light On the non-major trunk roads acquired in 530 it is equal to vehicle quantity, wherein the preset non-master trunk road vehicle threshold range The maximum value of corresponding duration is not more than the minimum value of the corresponding duration of the preset major trunk roads vehicle threshold range.

Wherein, programmable logic controller (PLC) abbreviation PLC (Programmable Logic Controller), is a kind of number Word arithmetic operates electronic system, using a kind of programmable memory, inside it storage execute logical operation, sequential control, Periodically, the instruction of the operations such as counting and arithmetical operation, is controlled various types of by digital or analog input and output Mechanical equipment or production process.The implementation procedure of programmable logic controller (PLC) can be divided into three phases: input sample, user program It executes and output refreshes.

Detector of traffic information is applied in traffic detection system or traffic information acquisition system, quiet on lane for detecting The vehicle of vehicle and movement only can be divided into video detector, coil checker, microwave detector etc. according to performance.Traffic Information detector is by being measured in real time each lane, to obtain corresponding vehicle detection data.

Optionally, in a kind of embodiment, the first quantitative range group is main by the first major trunk roads vehicle threshold value and second Trunk road vehicle threshold value is divided into three continuous major trunk roads vehicle threshold ranges, wherein the first major trunk roads vehicle threshold range is not Greater than the first major trunk roads vehicle threshold value；Third major trunk roads vehicle threshold range is not less than the second major trunk roads vehicle threshold value；Second is main Trunk road vehicle threshold range is between the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value；

The programmable logic controller (PLC) 520, for obtaining the major trunk roads in first detector of traffic information 510 After first quantity of the vehicle of upper waiting, it is specifically used for:

Optionally, in a kind of embodiment, the second quantitative range group is by the first non-master trunk road vehicle threshold value and second Non-master trunk road vehicle threshold value is divided into three continuous non-master trunk road vehicle threshold ranges, wherein the first non-master trunk road vehicle threshold It is worth range and is not more than the first non-master trunk road vehicle threshold value；The non-master trunk road vehicle threshold range of third is not less than the second non-major trunk roads vehicle Threshold value；Second non-master trunk road vehicle threshold range the first non-master trunk road vehicle threshold value and the second non-master trunk road vehicle threshold value it Between；

The programmable logic controller (PLC) 520, for obtaining the major trunk roads in first detector of traffic information 510 The destination number of the vehicle of upper waiting, and judge that the destination number no more than after the destination number threshold value, is specifically used for:

Optionally, in a kind of embodiment, the programmable logic controller (PLC) 520 is specifically used for:

For system embodiments, since it is substantially similar to the method embodiment, so describing fairly simple, correlation Place illustrates referring to the part of embodiment of the method.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.

Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention It is interior.

Claims

1. a kind of traffic lamp control method, applied to the traffic lights of crossroad, the crossroad is divided into major trunk roads and non-master Arterial highway, the traffic lights include control major trunk roads vehicle pass-through the first traffic lights and the non-master trunk road vehicle of control it is current second Traffic lights；It is characterized in that, which comprises

The first predetermined time before the first traffic lights becomes green light by red light, obtains the vehicle waited on the major trunk roads First quantity；

Determine preset major trunk roads vehicle threshold range in the first quantitative range group corresponding to first quantity, it will be described pre- If the corresponding duration of major trunk roads vehicle threshold range as the first long green light time；

The second predetermined time before the green light becomes next red light, obtains the mesh of the vehicle waited on the major trunk roads Quantity is marked, and judges whether the destination number is greater than preset destination number threshold value；

If the destination number is greater than the destination number threshold value, corresponding second traffic lights of next red light is determined Second long green light time is preset duration；

If the destination number is not more than the destination number threshold value, the second quantitative range group corresponding to the second quantity is determined In preset non-master trunk road vehicle threshold range, using the corresponding duration of the preset non-master trunk road vehicle threshold range as institute State the second long green light time, wherein second quantity is that the third before second traffic lights is become green light by red light is preset Moment, on the non-major trunk roads it is equal to vehicle quantity, wherein the preset non-master trunk road vehicle threshold range is corresponding The maximum value of duration is not more than the minimum value of the corresponding duration of the preset major trunk roads vehicle threshold range；

Wherein, the first quantitative range group is divided into three by the first major trunk roads vehicle threshold value and the second major trunk roads vehicle threshold value Continuous major trunk roads vehicle threshold range, wherein the first major trunk roads vehicle threshold range is not more than the first major trunk roads vehicle threshold value； Third major trunk roads vehicle threshold range is not less than the second major trunk roads vehicle threshold value；Second major trunk roads vehicle threshold range is main first Between trunk road vehicle threshold value and the second major trunk roads vehicle threshold value；

Preset major trunk roads vehicle threshold range in first quantitative range group corresponding to determination first quantity, by institute State the step of corresponding duration of preset major trunk roads vehicle threshold range is as the first long green light time, comprising:

Determine the corresponding first major trunk roads vehicle threshold range of first quantity, the second major trunk roads vehicle threshold range or third Major trunk roads vehicle threshold range；

When first quantity corresponds to the first major trunk roads vehicle threshold range or the third major trunk roads vehicle threshold range When, by the first major trunk roads vehicle threshold range or the corresponding default fixed duration of the third major trunk roads vehicle threshold range As first long green light time；Wherein, the corresponding default fixed duration of the first major trunk roads vehicle threshold range is less than institute State the corresponding default fixed duration of third major trunk roads vehicle threshold range；

When first quantity corresponds to the second major trunk roads vehicle threshold range, according to the calculating of preset first algorithm First long green light time.

2. the method according to claim 1, wherein the second quantitative range group is by the first non-master trunk road vehicle Threshold value and the second non-master trunk road vehicle threshold value are divided into three continuous non-master trunk road vehicle threshold ranges, wherein first is non-master Trunk road vehicle threshold range is not more than the first non-master trunk road vehicle threshold value；The non-master trunk road vehicle threshold range of third is not less than second Non-master trunk road vehicle threshold value；Second non-master trunk road vehicle threshold range is in the first non-master trunk road vehicle threshold value and the second non-major trunk roads Between vehicle threshold value；

Preset non-master trunk road vehicle threshold range in second quantitative range group corresponding to determination second quantity, will The corresponding duration of the preset non-master trunk road vehicle threshold range is as corresponding second traffic lights of the next red light The step of second long green light time, comprising:

Determine the corresponding first non-master trunk road vehicle threshold range of second quantity, the second non-master trunk road vehicle threshold range still The non-master trunk road vehicle threshold range of third；

When second quantity corresponds to the described first non-master trunk road vehicle threshold range or the non-master trunk road vehicle threshold value of the third It is when range, the described first non-master trunk road vehicle threshold range or the non-master trunk road vehicle threshold range of the third is corresponding default Fixed duration is as second long green light time；Wherein, the corresponding default fixation of the described first non-master trunk road vehicle threshold range Duration is less than the corresponding default fixed duration of the non-master trunk road vehicle threshold range of the third；

When second quantity corresponds to the described second non-master trunk road vehicle threshold range, institute is calculated according to preset second algorithm State the second long green light time.

3. the method according to claim 1, wherein described green according to preset first algorithm calculating described first The step of lamp duration, comprising:

Judge whether first numerical value has decimal place, when first numerical value has decimal place, removes decimal place and by integer Position plus 1, obtains second value；When first numerical value does not have decimal place, the second value is equal to first numerical value；

4. according to the method described in claim 2, it is characterized in that, described green according to preset second algorithm calculating described second The step of lamp duration, comprising:

Judge whether the third value has decimal place, when the third value has decimal place, removes decimal place and by integer Position plus 1, obtains the 4th numerical value；When the third value does not have decimal place, the 4th numerical value is equal to the third value；

5. a kind of traffic light control system, applied to the traffic lights of crossroad, the crossroad is divided into major trunk roads and non-master Arterial highway, the traffic lights include control major trunk roads vehicle pass-through the first traffic lights and the non-master trunk road vehicle of control it is current second Traffic lights；It is characterized in that, the traffic light control system include: the first detector of traffic information, programmable logic controller (PLC), Second detector of traffic information；

First detector of traffic information, for the first predetermined time before the first traffic lights becomes green light by red light, Obtain the first quantity of the vehicle waited on the major trunk roads；

The programmable logic controller (PLC), for obtaining the vehicle waited on the major trunk roads in first detector of traffic information The first quantity after, determine preset major trunk roads vehicle threshold value in the first quantitative range group corresponding to first quantity Range, using the corresponding duration of the preset major trunk roads vehicle threshold range as the first long green light time；

First detector of traffic information is obtained for the second predetermined time before the green light becomes next red light The destination number of the vehicle waited on the major trunk roads is taken, and judges whether the destination number is greater than preset destination number threshold Value；

The programmable logic controller (PLC), for obtaining the vehicle waited on the major trunk roads in first detector of traffic information Destination number, and judge the destination number be greater than the destination number threshold value after, determine next red light pair Second long green light time of the second traffic lights answered is preset duration；Alternatively, obtaining institute in first detector of traffic information The destination number of the vehicle waited on major trunk roads is stated, and judges that the destination number is not more than after the destination number threshold value, Determine preset non-master trunk road vehicle threshold range in the second quantitative range group corresponding to the second quantity, it will be described preset non- The corresponding duration of major trunk roads vehicle threshold range is as second long green light time, wherein second quantity is described second Traffic lights is become the third predetermined time before green light by red light, described non-master acquired in second detector of traffic information The quantity of the vehicle waited on arterial highway, wherein the maximum value of the corresponding duration of the preset non-master trunk road vehicle threshold range The minimum value of duration corresponding no more than the preset major trunk roads vehicle threshold range；

The programmable logic controller (PLC), for obtaining the vehicle waited on the major trunk roads in first detector of traffic information The first quantity after, be specifically used for:

When first quantity corresponds to the third major trunk roads vehicle threshold range, according to the calculating of preset first algorithm First long green light time.

6. system according to claim 5, which is characterized in that the second quantitative range group is by the first non-master trunk road vehicle Threshold value and the second non-master trunk road vehicle threshold value are divided into three continuous non-master trunk road vehicle threshold ranges, wherein first is non-master Trunk road vehicle threshold range is not more than the first non-master trunk road vehicle threshold value；The non-master trunk road vehicle threshold range of third is not less than second Non-master trunk road vehicle threshold value；Second non-master trunk road vehicle threshold range is in the first non-master trunk road vehicle threshold value and the second non-major trunk roads Between vehicle threshold value；

The programmable logic controller (PLC), for obtaining the vehicle waited on the major trunk roads in first detector of traffic information Destination number, and judge that the destination number no more than after the destination number threshold value, is specifically used for:

7. system according to claim 5, which is characterized in that the programmable logic controller (PLC) is specifically used for:

8. system according to claim 6, which is characterized in that the programmable logic controller (PLC) is specifically used for: