CN106683448A - CPS-based road signal lamp control system and method thereof - Google Patents
CPS-based road signal lamp control system and method thereof Download PDFInfo
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- CN106683448A CN106683448A CN201710062595.7A CN201710062595A CN106683448A CN 106683448 A CN106683448 A CN 106683448A CN 201710062595 A CN201710062595 A CN 201710062595A CN 106683448 A CN106683448 A CN 106683448A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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Abstract
The invention discloses a CPS-based road signal lamp control system and a method thereof. The system applies a sensor to detect vehicle flow of a road, and collects, processes and transfers the acquired data through a CPS node device, thereby adjusting and controlling the time length of a red lamp and a green lamp of a traffic signal lamp in real time. The system aims to solve the traffic jam caused by too much waiting and queuing vehicles for the red lamp time is too long when the vehicle flow is big, and display the maximum carrying ability of the road according to actual condition. Besides, the set of system can automatically control the traffic signal lamp according to actual condition, reduce labor consumption, thus the system and method can adapt to the development trend of intelligent traffic in future.
Description
Technical field
The invention belongs to the intellectual traffic control field of CPS technologies, is related to a kind of signal light path control system based on CPS
System and its method.
Background technology
With the continuous quickening of urbanization process, therefore increasing social problem exposes out.Wherein, due to people
The continuous growth of mouthful quantity and private car recoverable amount and caused urban road congestion problem, are also that society's focus of interest is asked
One of topic, especially traffic intersection congested problem is denounced by people caused by peak period institute on and off duty.This problem
Solution only cannot be completed by the strength of government or certain enterprise.Current era, the development day of information technology is new
The moon is different, and the example for being used to solve practical problem in life by information technology is of common occurrence.Therefore, herein for traffic intersection road
Congested problem combines related information technology and proposes to set up a set of intelligent traffic signal lamp control system based on CPS.Many institute's weeks
Know, traffic intersection signal lamp duration is often fixed, and this can cause arranged not due to signal lighties duration rush hour on and off duty
Rationally cause vehicle to be waited in line in a large number, form road crowded.
The content of the invention
Technical problem：The present invention provides the signal light path control based on CPS that a kind of Signalized control meets actual demand
System processed, while there is provided a kind of roadway sign lamp control method based on CPS.
Technical scheme：The roadway sign lamp control system based on CPS of the present invention, including：
Pressure transducer group, for detecting passing through for vehicle；
CPS passing node equipments, are connected with described pressure transducer group, for the collection and transmission of information；
Surveillance center, is connected, for monitoring the traffic status of road vehicle, and to signal with described CPS passing node equipments
Lamp is controlled.
Further, in the present invention, described pressure transducer group lays each track flow export and stream at the parting of the ways
Entrance, the crossroad has from south to north, by north orientation south, from west to east and from east to west four direction of traffics, each direction
On be respectively intended to detect current direction of traffic straight trip, turn left, the pressure transducer for turning right and importing vehicle flowrate constitutes one
Sensor group, pressure transducer group is connected with CPS passing node equipments, and physical deformation is converted to the signal of telecommunication by pressure transducer, passes through
A/D conversions give CPS passing node equipments by Serial Port Transmission.
Further, in the present invention, described CPS passing node equipments are by with data sampling and processing and forwarding capability
Single-chip microcomputer and its ancillary equipment are constituted, each pressure transducer group one CPS passing node equipments of correspondence, and CPS passing node equipments are to pressure
Force transducer group transmission signal judged, be confirmed whether it is passing through for vehicle, and by information of vehicle flowrate be transferred to control in
The heart.
Further, in the present invention, the CPS passing node equipments are judged the signal that pressure transducer group is transmitted, bag
Include following two aspects：
CPS passing node equipments read data every 10ms from pressure transducer, if the data for reading are 0, then it represents that currently without
Vehicle passes through；When read data be 0 when, if obtain data it is identical with last time if expression Current vehicle not entirely through,
If differing, then it represents that front truck has passed through, this hour counter adds 1；
CPS passing node equipments are filtered to the data that pressure transducer is transmitted, if the current data for reading are not 0, but
The data that numerical value and motor vehicles are produced when passing through not on the same order of magnitude when, then CPS passing node equipments ignore this secondary data, from
Pressure transducer re-reads data, otherwise, is judged as having vehicle to pass through.
Further, in the present invention, being performed for task of Surveillance center includes：
(1) information of vehicle flowrate gathered according to the CPS passing node equipments of diverse location, it is directly perceived that each four crossway of city is presented
The traffic status of mouth present road；
(2) information of vehicle flowrate collected according to a certain four crossway crossing CPS passing node equipments, adjacent to this crossroad
Other Traffic Flow at Intersection be predicted, be controlled according to the duration predicted the outcome to traffic light.
Further, in the present invention, the Surveillance center other Traffic Flow at Intersection adjacent to this crossroad
The flow process being predicted is as follows：
(1) in a cycle by North and South direction and east-west direction, the duration of green light and red light is entered respectively by equation below
Row is calculated：
C represents the total time in a traffic lights cycle, T in formulaNSRepresent north and south current direction green light in one cycle
Duration, TEWRepresent the duration of the current direction of thing green light in one cycle.nN、nS、nE、nWRepresent and pressed on each direction of traffic
The remittance vehicle flowrate that force transducer is detected；
(2) for each current direction, due to right-hand bend direction be not provided with it is forbidden, left-hand bend long green light time and straight trip green light
Duration is calculated by below equation：
T represents currently current direction long green light time, T in formulaLRepresent current duration, TSThe current duration of straight trip is represented,
nL、nS、nRThe number of the left-hand bend that respectively pressure transducer is detected in expression traffic lights cycle last time, straight trip and right-hand bend vehicle
Amount.
The roadway sign lamp control method based on CPS of the present invention, comprises the following steps：
1) the current data of pressure transducer group collection road vehicle, and the data for collecting are transferred to into CPS passing node equipments；
2) data of pressure transducer group of the CPS passing node equipments to receiving are processed, and are obtained by information of vehicle flowrate,
Information of vehicle flowrate is transferred to into Surveillance center；
3) information of vehicle flowrate that comprehensive each crossing of Surveillance center collects, is predicted to urban road vehicle flowrate；
4) duration of each crossroad access signal lights is arranged according to the result of prediction, and signal lighties is controlled.
Further, in the inventive method, the step 1) in, the laying of pressure transducer group at the parting of the ways flow by each track
Outlet and inflow entrance, the crossroad has from south to north, by north orientation south, from west to east and from east to west four driving sides
To, it is respectively intended to detect current direction of traffic straight trip on each direction, turn left, turn right and import the pressure sensing of vehicle flowrate
Device constitutes a sensor group, and pressure transducer group is connected with CPS passing node equipments, and physical deformation is converted to electricity by pressure transducer
Signal, CPS passing node equipments are given through A/D conversions by Serial Port Transmission.
Further, in the inventive method, the step 2) in, the letter that CPS passing node equipments are transmitted to pressure transducer group
Number carry out the process of following two aspects：
CPS passing node equipments read data every 10ms from pressure transducer, if the data for reading are 0, then it represents that currently without
Vehicle passes through；When read data be 0 when, if obtain data it is identical with last time if expression Current vehicle not entirely through,
If differing, then it represents that front truck has passed through, this hour counter adds 1；
CPS passing node equipments are filtered to the data that pressure transducer is transmitted, if the current data for reading are not 0, but
The data that numerical value and motor vehicles are produced when passing through not on the same order of magnitude when, then CPS passing node equipments ignore this secondary data, from
Pressure transducer re-reads data, otherwise, is judged as having vehicle to pass through.
Further, in the inventive method, the step 3) in, Surveillance center is as follows to urban road wagon flow
Amount is predicted：
(1) in a cycle from south to north and by north orientation south with travel the forbidden time from east to west and from west to east and pass through
Equation below is calculated：
C represents the total time in a traffic lights cycle, T in formulaNSRepresent north and south current direction green light in one cycle
Duration, TEWRepresent the duration of the current direction of thing green light in one cycle.nN、nS、nE、nWRepresent and pressed on each direction of traffic
The remittance vehicle flowrate that force transducer is detected；
(2) for each current direction, due to right-hand bend direction be not provided with it is forbidden, left-hand bend long green light time and straight trip green light
Duration is calculated by below equation：
T represents currently current direction long green light time, T in formulaLRepresent current duration, TSThe current duration of straight trip is represented,
nL、nS、nRThe quantity of the left-hand bend that pressure transducer is detected in expression traffic lights cycle last time, straight trip and right-hand bend vehicle.
The duration of each crossroad access signal lights is arranged according to the result of prediction.
The present invention is better than traditional Signalized control method in performance.Traditional Signalized control method, often signal
The duration of lamp is all to fix single-candidate, it is impossible to be changed according to practical situation, in duration of the rush-hour to change signal lighties,
Often by what is be manually controlled.
In this set system, the vehicle pass-through situation of road is obtained automatically by pressure transducer, so as to according to certain
Algorithm and rule realizing automatically controlling for signal lighties duration.Compared to infrared distance sensor when many automobiles of appearance
When being staggered front to back current, it may appear that infrared signal be blocked always cause receiving terminal do not receive transmitting terminal infrared signal and mistake
Think passing through for only one car, this has also occurred as soon as the larger error of measurement, and infrared distance sensor is expensive, no
Suitable widespread adoption.RFID technique is not used to be because that we need to stick RFID RF identifications to the chassis of each car
Label, and label has to have certain information relevance with identification equipment, implements difficulty larger.
Description of the drawings
Fig. 1 is an application scenarios example of the present invention.
Fig. 2 is the system module frame diagram of the present invention.
Fig. 3 is that CPS passing node equipments carry out flow chart of data processing figure.
Specific embodiment
Fig. 1 is refer to, an application scenarios example of the present invention is it illustrates.Pressure transducer group is laid at the parting of the ways
Each track flow export and inflow entrance.Crossroad have from south to north, by north orientation south, from west to east and from east to west, four rows
Car direction.It is respectively intended to detect current direction of traffic straight trip on each direction, turns left, turns right and import the pressure of vehicle flowrate
Sensor group is into a sensor group.
The basic saddlebag of roadway sign lamp control system and its method based on CPS contains following step：Pressure is passed
The current data of sensor group collection road vehicle, and the data for collecting are transferred to into CPS passing node equipments.CPS passing node equipments are received
The data of sensor group, and process is carried out to transmission data obtain by information of vehicle flowrate, information of vehicle flowrate is transferred to into monitoring
Center.The information of vehicle flowrate that comprehensive each crossing of Surveillance center collects, is predicted to urban road vehicle flowrate.
Fig. 2 is refer to, the system module frame diagram of the present invention is it illustrates.Pressure transducer group and CPS passing node equipments phases
Even, physical deformation can be converted to the signal of telecommunication by pressure transducer, and CPS passing node equipments are given by Serial Port Transmission through A/D conversions.
CPS passing node equipments are made up of the single-chip microcomputer with data sampling and processing and forwarding capability and its ancillary equipment, each pressure
Sensor group one CPS passing node equipments of correspondence.CPS passing node equipments carry out judgement process to the signal that pressure transducer group is transmitted,
And information of vehicle flowrate is transferred to into control centre.
Fig. 3 is refer to, CPS passing node equipments carry out judgement process to the signal that pressure transducer group is transmitted, it is characterised in that
Described data processing mainly includes two aspects：
(1) CPS passing node equipments read data every 10ms from pressure transducer.If the data for reading are 0, then it represents that current
Pass through without vehicle；When the data for reading not are 0, represent that Current vehicle does not lead to completely if the data for obtaining are identical with last time
Cross, if differing, then it represents that front truck has passed through, this hour counter should add 1.
(2) CPS passing node equipments can be filtered to the data of pressure transducer transmission, if the data of current reading are not
0, but numerical value is less and the data that produce when passing through with motor vehicles not on the same order of magnitude when, CPS passing node equipments can be ignored
This secondary data, from pressure transducer data are re-read.
In this set system, the vehicle pass-through situation of road is obtained automatically by sensor, so as to according to certain calculation
Method realizes automatically controlling for signal lighties duration with rule.When vehicle flowrate is larger, system can be appropriate by the duration of green light
Extend, vehicle can be run through, it is to avoid overstock；If now road pressure is not very big, system can be by red light
Duration suitably increase, alleviate the road pressure in other current directions.According to real road traffic status, signal is realized
The Based Intelligent Control of lamp, the carrying capacity maximum so as to play road.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvement and equivalent can also be made, these are to the present invention
Claim is improved and the technical scheme after equivalent, each falls within protection scope of the present invention.
Claims (10)
1. a kind of roadway sign lamp control system based on CPS, it is characterised in that the system includes：
Pressure transducer group, for detecting passing through for vehicle；
CPS passing node equipments, are connected with described pressure transducer group, for the collection and transmission of information；
Surveillance center, is connected with described CPS passing node equipments, for monitoring the traffic status of road vehicle, and signal lighties is entered
Row control.
2. the roadway sign lamp control system and its method of CPS are based on as claimed in claim 1, it is characterised in that described
Pressure transducer group lays each track flow export and inflow entrance at the parting of the ways, and the crossroad has from south to north, by north
Southwards, from west to east and from east to west four direction of traffics, are respectively intended to detect current direction of traffic straight trip on each direction, left
Turn, the pressure transducer for turning right and importing vehicle flowrate constitutes a sensor group, pressure transducer group and CPS passing node equipments
It is connected, physical deformation is converted to the signal of telecommunication by pressure transducer, CPS passing node equipments is given by Serial Port Transmission through A/D conversions.
3. the roadway sign lamp control system of CPS is based on as claimed in claim 1 or 2, it is characterised in that described CPS knots
Point device is made up of the single-chip microcomputer with data sampling and processing and forwarding capability and its ancillary equipment, each pressure sensing
Device group one CPS passing node equipments of correspondence, CPS passing node equipments judge the signal that pressure transducer group is transmitted, are confirmed whether
It is passing through for vehicle, and information of vehicle flowrate is transferred to into control centre.
4. the roadway sign lamp control system of CPS is based on as claimed in claim 3, it is characterised in that described CPS nodes set
The standby signal to the transmission of pressure transducer group judges, including following two aspects：
CPS passing node equipments read data every 10ms from pressure transducer, if the data for reading are 0, then it represents that currently without vehicle
Pass through；When the data for reading not are 0, represent Current vehicle not entirely through if not if the data for obtaining are identical with last time
Identical, then it represents that front truck has passed through, this hour counter adds 1；
CPS passing node equipments are filtered to the data that pressure transducer is transmitted, if the current data for reading are not 0, but numerical value
The data produced when passing through with motor vehicles not on the same order of magnitude when, then CPS passing node equipments ignore this secondary data, from pressure
Sensor re-reads data, otherwise, is judged as having vehicle to pass through.
5. the roadway sign lamp control system of CPS is based on as claimed in claim 1 or 2, it is characterised in that in described monitoring
Being performed for task of the heart includes：
(1) work as the information of vehicle flowrate gathered according to the CPS passing node equipments of diverse location, each crossroad of city that presents directly perceived
The traffic status of front road；
(2) information of vehicle flowrate collected according to a certain four crossway crossing CPS passing node equipments, its adjacent to this crossroad
Its Traffic Flow at Intersection is predicted, and is controlled according to the duration predicted the outcome to traffic light.
6. the roadway sign lamp control system of CPS is based on as claimed in claim 5, it is characterised in that the Surveillance center pair
The flow process that other adjacent Traffic Flow at Intersection of this crossroad are predicted is as follows：
(1) in a cycle by North and South direction and east-west direction, the duration of green light and red light is counted respectively by equation below
Calculate：
C represents the total time in a traffic lights cycle, T in formulaNSThe duration of the current direction in north and south green light in one cycle is represented,
TEWRepresent the duration of the current direction of thing green light in one cycle.nN、nS、nE、nWRepresent each direction of traffic upward pressure sensing
The remittance vehicle flowrate that device is detected；
(2) for each current direction, due to right-hand bend direction be not provided with it is forbidden, left-hand bend long green light time and straight trip long green light time
Calculated by below equation：
T represents currently current direction long green light time, T in formulaLRepresent current duration, TSRepresent the current duration of straight trip, nL、
nS、nRThe quantity of the left-hand bend that respectively pressure transducer is detected in expression traffic lights cycle last time, straight trip and right-hand bend vehicle.
7. a kind of roadway sign lamp control method based on CPS, it is characterised in that the method is comprised the following steps：
1) the current data of pressure transducer group collection road vehicle, and the data for collecting are transferred to into CPS passing node equipments；
2) data of pressure transducer group of the CPS passing node equipments to receiving are processed, and are obtained by information of vehicle flowrate, by car
Flow information is transferred to Surveillance center；
3) information of vehicle flowrate that comprehensive each crossing of Surveillance center collects, is predicted to urban road vehicle flowrate；
4) duration of each crossroad access signal lights is arranged according to the result of prediction, and signal lighties is controlled.
8. the roadway sign lamp control method based on CPS according to claim 7, it is characterised in that the step 1) in,
Pressure transducer group lays each track flow export and inflow entrance at the parting of the ways, and the crossroad has from south to north, by north
Southwards, from west to east and from east to west four direction of traffics, are respectively intended to detect current direction of traffic straight trip on each direction, left
Turn, the pressure transducer for turning right and importing vehicle flowrate constitutes a sensor group, pressure transducer group and CPS passing node equipments
It is connected, physical deformation is converted to the signal of telecommunication by pressure transducer, CPS passing node equipments is given by Serial Port Transmission through A/D conversions.
9. the roadway sign lamp control method based on CPS according to claim 7, it is characterised in that the step 2) in,
CPS passing node equipments carry out the process of following two aspects to the signal that pressure transducer group is transmitted：
CPS passing node equipments read data every 10ms from pressure transducer, if the data for reading are 0, then it represents that currently without vehicle
Pass through；When the data for reading not are 0, represent Current vehicle not entirely through if not if the data for obtaining are identical with last time
Identical, then it represents that front truck has passed through, this hour counter adds 1；
CPS passing node equipments are filtered to the data that pressure transducer is transmitted, if the current data for reading are not 0, but numerical value
The data produced when passing through with motor vehicles not on the same order of magnitude when, then CPS passing node equipments ignore this secondary data, from pressure
Sensor re-reads data, otherwise, is judged as having vehicle to pass through.
10. the roadway sign lamp control method based on CPS according to claim 7,8 or 9, it is characterised in that the step
It is rapid 3) in, Surveillance center is predicted as follows to urban road vehicle flowrate：
(1) pass through as follows from south to north and by north orientation south with the forbidden time is travelled from east to west and from west to east in a cycle
Formula is calculated：
C represents the total time in a traffic lights cycle, T in formulaNSThe duration of the current direction in north and south green light in one cycle is represented,
TEWRepresent the duration of the current direction of thing green light in one cycle.nN、nS、nE、nWRepresent each direction of traffic upward pressure sensing
The remittance vehicle flowrate that device is detected；
(2) for each current direction, due to right-hand bend direction be not provided with it is forbidden, left-hand bend long green light time and straight trip long green light time
Calculated by below equation：
T represents currently current direction long green light time, T in formulaLRepresent current duration, TSRepresent the current duration of straight trip, nL、
nS、nRThe quantity of the left-hand bend that pressure transducer is detected in expression traffic lights cycle last time, straight trip and right-hand bend vehicle.
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| CN107945543A (en) * | 2017-12-12 | 2018-04-20 | 常州大学 | A kind of method that green time section is accurately calculated based on artificial intelligence |
| CN110556000A (en) * | 2018-06-04 | 2019-12-10 | 义硕智能股份有限公司 | Artificial intelligence traffic detection system |
| CN111681428A (en) * | 2020-06-05 | 2020-09-18 | 北京百度网讯科技有限公司 | Overflow detection method and device, electronic equipment and storage medium |
| CN112037543A (en) * | 2020-09-14 | 2020-12-04 | 中德（珠海）人工智能研究院有限公司 | Urban traffic light control method, device, equipment and medium based on three-dimensional modeling |
| CN114220280A (en) * | 2021-12-12 | 2022-03-22 | 李会江 | Controllable traffic signal lamp for man and vehicle |
| CN115083160A (en) * | 2022-06-15 | 2022-09-20 | 国汽智控(北京)科技有限公司 | Signal lamp control method and device and signal lamp controller |
| CN116189463A (en) * | 2023-01-31 | 2023-05-30 | 华南理工大学 | Single intersection signal timing scheme rolling optimization method based on information physical system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945543A (en) * | 2017-12-12 | 2018-04-20 | 常州大学 | A kind of method that green time section is accurately calculated based on artificial intelligence |
| CN107945543B (en) * | 2017-12-12 | 2020-10-27 | 常州大学 | Method for accurately calculating green light time period based on artificial intelligence |
| CN110556000A (en) * | 2018-06-04 | 2019-12-10 | 义硕智能股份有限公司 | Artificial intelligence traffic detection system |
| CN111681428A (en) * | 2020-06-05 | 2020-09-18 | 北京百度网讯科技有限公司 | Overflow detection method and device, electronic equipment and storage medium |
| CN112037543A (en) * | 2020-09-14 | 2020-12-04 | 中德（珠海）人工智能研究院有限公司 | Urban traffic light control method, device, equipment and medium based on three-dimensional modeling |
| CN114220280A (en) * | 2021-12-12 | 2022-03-22 | 李会江 | Controllable traffic signal lamp for man and vehicle |
| CN114220280B (en) * | 2021-12-12 | 2023-10-13 | 李会江 | Controllable traffic signal lamp for man and vehicle |
| CN115083160A (en) * | 2022-06-15 | 2022-09-20 | 国汽智控(北京)科技有限公司 | Signal lamp control method and device and signal lamp controller |
| CN116189463A (en) * | 2023-01-31 | 2023-05-30 | 华南理工大学 | Single intersection signal timing scheme rolling optimization method based on information physical system |
| CN116189463B (en) * | 2023-01-31 | 2023-09-26 | 华南理工大学 | Single intersection signal timing scheme rolling optimization method based on information physical system |
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