CN102750834B - Performance detector used for diverted traffic signal controller and detection method thereof - Google Patents
Performance detector used for diverted traffic signal controller and detection method thereof Download PDFInfo
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- CN102750834B CN102750834B CN201210207755.XA CN201210207755A CN102750834B CN 102750834 B CN102750834 B CN 102750834B CN 201210207755 A CN201210207755 A CN 201210207755A CN 102750834 B CN102750834 B CN 102750834B
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Abstract
The invention relates to a performance detector used for a diverted traffic signal controller and a detection method thereof. The performance detector comprises an industrial personal computer capable of operating traffic microcosmic simulation software and a controller evaluation system, an interface assembly and a traffic signal controller set, wherein the microcosmic simulation software can simulate the traffic of the diverted traffic, send simulation data to a traffic signal controller to be tested by the interface assembly; a control strategy is returned back to the interface assembly by the traffic signal controller so as to reset the phase of a signal lamp of the simulated diverted traffic, the interface assembly stores data of the simulation process in the controller evaluation system so as to evaluate the performance. The detection method is based on the performance detector. The traffic signal controller to be tested is connected with the interface assembly so as to form real-time hardware on a loop simulation platform with the microcosmic simulation software of the traffic, so that the simulation test and the performance evaluation can be carried out. The detection method provided by the invention can ensure the accuracy of the simulation results so as to make the performance detection results more comprehensive and objective. Moreover the detection method has the advantages of simplicity and rapidness, easiness in operation, and high repeatability.
Description
Technical field
The present invention relates to device for detecting performance and the detection method thereof of a kind of crossing traffic signal control, for traffic signal control manufacturer evaluation signal controller, control effect.
Background technology
Crossing traffic signal control system can distribute right of way from time and space, thereby effectively dredges the traffic flow of crossing, and the traffic capacity of urban road network traffic and operational efficiency are played an important role.Therefore intersection signal control system is controlled the quality of effect, and largely co-relation the situation of urban transportation.Can be fast, effectively the performance of traffic signal control system is evaluated, just become the problem of needing solution badly.
Even there is no unified standard about crossing traffic controller Performance Detection at present, the method of the performance of detection traffic signal control is also very deficient, the method that people adopt conventionally mainly contains two kinds: a kind of is to utilize computing machine to set up realistic model, the algorithm of signal controller is carried out to emulation, although this method is very convenient, but owing to having ignored actual signal controller, thereby cause result to have very large error; Another method is direct at actual crossing deployment signal controller, thereby the control effect of signal controller is evaluated.This method clearly, performance difficulty, spends hugely, and exists potential safety hazard.Therefore, need to find new method, evaluate the control effect of traffic signal control.
Summary of the invention
The present invention is directed to the technology of existing detection traffic signal control performance, otherwise error is too large, otherwise performance difficulty spends huge problem, proposed a kind of device for detecting performance for crossing traffic signal control and detection method thereof.
Device for detecting performance for crossing traffic signal control provided by the invention, comprising: industrial computer, interface module and traffic signal control group.On industrial computer, be loaded with microscopic traffic simulation software and controller evaluation system.Interface module comprises software interface plug-in unit and controller translation interface.In traffic signal control group, can access the traffic signal control to be measured of different communication interfaces, and comprise more than one traffic signal control to be measured.
Microscopic traffic simulation software is that road net model is set up in crossing, and total magnitude of traffic flow of each crossing in simulated environment is set, in simulation process, the magnitude of traffic flow of the crossing that microscopic traffic simulation software detects the phase place of Intersections in simulated environment and inspection car device in real time, sends to traffic signal control to be measured by interface module; Software interface plug-in unit is the dll plug-in unit that the api function that uses microscopic traffic simulation software to provide is write, when emulation starts, by microscopic traffic simulation Bootload; Controller translation interface has comprised different communication interfaces, supports different communications protocol, for connecting the traffic signal control to be measured of different communication interfaces; Traffic signal control is after obtaining the magnitude of traffic flow of each crossing and the phase place of signal lamp, according to the steering logic of self, calculate the phase place of the signal lamp after crossing is optimized, the phase information of the signal lamp after optimizing is packaged in control strategy data, send to interface module.
Software interface plug-in unit comprises: communication module, transport information extraction module and signal lamp phase place arrange module; Communication module is used for sending in real time the magnitude of traffic flow of each crossing and the phase place of signal lamp to traffic signal control, and receives the control strategy data that traffic signal control sends; The data that transport information extraction module periodically detects the crossing inspection car device in microscopic traffic simulation software emulation environment, be saved in a fixing traffic information file, the data that crossing inspection car device detects comprise car speed, inspection car device occupation rate, time headway and the magnitude of traffic flow; Signal lamp phase place arranges module from the control strategy data of the traffic signal control that receives, extracts the phase order of the bit of the signal lamp after optimizing, and according to the phase place of the signal lamp of crossing in the phase place command set simulated environment of the signal lamp after optimizing.
Controller evaluation system, after emulation finishes, reads the data in traffic information file, calculates the mean delay of crossing vehicle, average queue length and maximum queue length, and the control effect of traffic signal control is made to evaluation.
A kind of method for testing performance for crossing traffic signal control provided by the invention, based on above-mentioned detection device, specifically comprises the steps:
Step 1: testing crew, by traffic signal control access controller translation interface to be measured, starts microscopic traffic simulation software on industrial computer, loads road network file and software interface plug-in unit, and total magnitude of traffic flow of each crossing is set, and starts emulation;
Step 2: the magnitude of traffic flow of the crossing that microscopic traffic simulation software detects the phase place of Intersections in simulated environment and inspection car device in real time, sends to traffic signal control to be measured by the communication module in software interface plug-in unit;
Step 3: traffic signal control to be measured receives after the magnitude of traffic flow of crossing and the phase place of signal lamp, according to the steering logic of self, calculate the phase place of the signal lamp after crossing is optimized, and the phase order of the bit of the signal lamp after optimizing is packaged in control strategy data, send to the communication module in software interface plug-in unit;
Step 4: the signal lamp phase place in software interface plug-in unit arranges module, the control strategy data that receive from communication module, extract the phase order of the bit of the signal lamp after optimizing, and according to the phase place of the signal lamp of crossing in the phase place command set simulated environment of the signal lamp after optimizing;
Step 5: the data that the transport information extraction module in software interface plug-in unit periodically detects the crossing inspection car device in microscopic traffic simulation software emulation environment, be saved in a fixing traffic information file, the data that crossing inspection car device detects comprise car speed, inspection car device occupation rate, time headway and the magnitude of traffic flow;
Step 6: after emulation finishes, controller evaluation system reads the data in traffic information file, calculates the mean delay of crossing vehicle, average queue length and maximum queue length, and the control effect of traffic signal control to be measured is made to evaluation.
Advantage of the present invention and good effect are:
(1) pick-up unit of the present invention and method thereof, by microscopic traffic simulation software and outside traffic signal control, set up real-time hardware-in-loop simulation platform, in conjunction with controller evaluation system, can evaluate the control effect of traffic signal control, there is simple and fast, easy operating, repeatable energy high, the error of having avoided pure software emulation to cause on the one hand, also avoided on the other hand site test performance difficulty, spent excessive, uneasy congruent problem, can be fast, effectively, the detection of settling signal controller performance accurately.
(2) microscopic traffic simulation software of the present invention, by calling the software interface plug-in unit writing, is set up real-time Communication for Power with outside traffic signal control, has guaranteed the accuracy of simulation result;
(3) the present invention can carry out modeling to multi-form signalized intersections by microscopic traffic simulation software, simulates various traffic scene, thereby the traffic signal control to same model can carry out emulation under dissimilar signalized intersections; Can also pass through the setting to the magnitude of traffic flow of crossing, check traffic signal control in same crossing the control effect to different flow, make performance test results more comprehensive, more objective.
(4) the controller translation interface that the present invention adopts, comprises RS232, RS485, and the multiple communication modes such as wireless network, make the present invention for the signal controller of different communication modes, greatly to have improved the applicability of invention.
(5) the controller evaluation system that the present invention adopts, after emulation finishes, in simulation process, the transport information that software interface plug-in unit is preserved, calculate the multinomial evaluation indexes such as the mean delay of the vehicle of crossing, average queue length, maximum queue length, judge whether traffic signal control has improved the traffic capacity of crossing, thereby realize the detection of traffic signal control being controlled to effect, testing result has cogency.
(6) the present invention can carry out emulation to a plurality of traffic signal controls simultaneously, can arterial highway intersection signal inter-linked controlling method be studied and be evaluated, and can also regional traffic whistle control system be evaluated and be studied, and has improved greatly efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of multi-form crossing;
Fig. 2 is the one-piece construction block diagram of device for detecting performance of the present invention
Fig. 3 is a Sample Scenario figure of application pick-up unit of the present invention;
Fig. 4 is the flow chart of steps of method for testing performance of the present invention.
In figure:
1-industrial computer; 2-interface module; 3-traffic signal control group; 11-microscopic traffic simulation software; 12-controller evaluation system; 21-software interface plug-in unit; 211-communication module; 212-transport information extraction module; 213-signal lamp phase place arranges module; 22-controller translation interface; 31-traffic signal control (RS232 interface); 32-traffic signal control (RS485 interface); 33-traffic signal control (wireless network).
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, be dissimilar intersection, be the scene of applied the present invention traffic signal control that will detect.In Fig. 1, provide the example of several intersections, had junctions, cross junction etc.The present invention need to set up model for various crossings.
As shown in Figure 2, pick-up unit of the present invention comprises industrial computer 1, interface module 2 and traffic signal control group 3.
In traffic signal control group 3, comprise the traffic signal control with different communication modes, for example adopt RS232 interface to carry out the traffic signal control 31 of communication, the traffic signal control 32 that adopts RS485 interface to carry out communication, adopts wireless network to carry out traffic signal control 33 of communication etc.
Industrial computer 1 is used for loading microscopic traffic simulation software 11 and controller evaluation system 12.Microscopic traffic simulation software 11, can set up crossing road net model to multi-form crossing as shown in Figure 1, when an emulation, can choose crossing road net model according to actual conditions, and arranges participating in the magnitude of traffic flow of the crossing of emulation.Microscopic traffic simulation software 11 is set up real-time hardware at ring platform by interface module 20 and traffic signal control.
Microscopic traffic simulation software 11, for realistic model is set up in dissimilar crossing as shown in Figure 1, arranges total magnitude of traffic flow of each crossing, makes the traffic signal control can be at different crossings, in the situation of different tracks flow, carries out emulation.Microscopic traffic simulation software 11, in simulation process, sends the phase place of Intersections in simulated environment and the crossing magnitude of traffic flow that inspection car device detects in real time to interface module 2.In simulation process, the phase order of the bit of the signal lamp after the optimization of being sent according to traffic signal control by interface module 2, arranges the phase place of signal lamp in simulated environment, thereby controls the wagon flow direction of emulation.
Interface module 2 comprises software interface plug-in unit 21 and controller translation interface 22.Software interface plug-in unit 21 is actual is the dll plug-in unit that the api function that uses microscopic traffic simulation software 11 to provide is write, microscopic traffic simulation software 11 is by loading this dll plug-in unit (being software interface plug-in unit 21), mutual with the real time data realizing between microscopic traffic simulation software 11 and external signal controller.As shown in Figure 2, software interface plug-in unit 21 mainly comprises that communication module 211, transport information extraction module 212 and signal lamp phase place arrange module 213.The major function of communication module 211 is to receive in real time the data of traffic signal control outside to be measured, and send data to traffic signal control outside to be measured, send the magnitude of traffic flow of each crossing and the phase place of signal lamp to traffic signal control, receive the control strategy data that traffic signal control sends.The major function of transport information extraction module 212 is every through the regular hour, as every 5 minutes, the data that car device detects is examined in crossing, comprise car speed, inspection car device occupation rate, time headway, the information such as the crossing magnitude of traffic flow, are saved in a fixing traffic information file.The major function that signal lamp phase place arranges module 213 is the control strategy data of resolving the traffic signal control receiving, and the order of extracting the phase place of the signal lamp after optimizing arranges the phase place of Intersections in microscopic traffic simulation software 11.
Controller translation interface 22, comprised different communication interfaces, different communication interfaces such as RS232 interface, RS485 interface, wireless network, supports different communications protocol, thereby the traffic signal control to be measured that can connect different communication interfaces, as shown in Figure 2.
Traffic signal control is after obtaining the magnitude of traffic flow of each crossing and the phase place of signal lamp, according to the steering logic of self, the phase place of the signal lamp after the optimization of calculating crossing, and be packaged in control strategy data, send to interface module 2, and then the phase place of the signal lamp of crossing in control simulated environment, to control wagon flow direction.
After waiting for that emulation finishes, controller evaluation system 12, according to the evaluation index setting, comprises the mean delay of crossing vehicle, average queue length, and maximum queue lengths etc., evaluate the control effect of traffic signal control.The traffic information file that controller evaluation system 12 is preserved in simulation process by reading software interface card 21, calculate the information of the different evaluation indexs such as the mean delay of crossing vehicle, average queue length, maximum queue length, judge whether the control algolithm of traffic signal control has improved the traffic capacity of crossing, thereby the control effect of traffic signal control is made to evaluation.
As shown in Figure 3, for applying a practical application Sample Scenario figure of pick-up unit of the present invention, in figure, DLL plug-in unit is exactly software interface plug-in unit.Microscopic traffic simulation software 11 is set up real-time hardware-in-loop simulation platform by DLL plug-in unit and real traffic signal control, can realize the real-time information interaction of simulating scenes and traffic signal control, form the simulated environment of realistic traffic control situation, thus convenient, fast, effectively the control effect of different traffic signal controls is evaluated.Device for detecting performance proposed by the invention has simple and fast, easy operating, repeatable energy high.
As shown in Figure 4, the present invention is based on the method for testing performance of the traffic signal control of the device for detecting performance shown in Fig. 2, comprise the steps:
Step 1: testing crew is connected traffic signal control to be measured with controller translation interface 22, starts the microscopic traffic simulation software 11 on industrial computer 1, loads road network file and software interface plug-in unit, and total magnitude of traffic flow of each crossing is set, and starts emulation.
Step 2: the magnitude of traffic flow of the crossing that microscopic traffic simulation software 11 detects the phase place of Intersections in simulated environment and inspection car device in real time, by the communication module 211 in software interface plug-in unit 21, send to traffic signal control to be measured, the traffic signal control 31 that for example now employing RS232 interface to be measured carries out communication.
Step 3: traffic signal control to be measured receives after the magnitude of traffic flow of crossing and the phase place of signal lamp, according to the steering logic of self, calculate the phase place of the signal lamp after crossing is optimized, and the phase information of the signal lamp after optimizing is packaged in control strategy data, send to the communication module 211 in software interface plug-in unit 21.
Step 4: the signal lamp phase place in software interface plug-in unit 21 arranges module 213, the control strategy data that receive from communication module 211, extract the phase order of the bit of the signal lamp after optimizing, and according to the phase place of the signal lamp of crossing in the phase place command set simulated environment of the signal lamp after optimizing.
Step 5: the data that the transport information extraction module 212 in software interface plug-in unit 21 periodically detects the crossing inspection car device in microscopic traffic simulation software 11 simulated environment, be saved in a fixing traffic information file, the data that crossing inspection car device detects comprise the magnitude of traffic flow of car speed, inspection car device occupation rate, time headway and crossing.
Step 6: after emulation finishes, controller evaluation system 12 reads the data in traffic information file, calculates the mean delay of crossing vehicle, average queue length and maximum queue length, and the control effect of traffic signal control to be measured is made to evaluation.
The magnitude of traffic flow by the 11 pairs of crossings of microscopic traffic simulation software on industrial computer 1 re-starts setting, and operation emulation, can obtain traffic signal control 31 evaluation effect in same crossing under different flow.
By the microscopic traffic simulation software 11 on industrial computer 1, set up the line traffic control traffic model of Multiple Intersections, controller translation interface 22 can be connected with a plurality of traffic signal controls, thereby microscopic traffic simulation software 11 loads software interface plug-in unit 21 and 30 real-time communications of signal controller group, operation emulation, can be studied and evaluate the line control method of Multiple Intersections by the controller evaluation system 12 on industrial computer 10.
Claims (4)
1. for a device for detecting performance for crossing traffic signal control, it is characterized in that, this device comprises: industrial computer, interface module and traffic signal control group; On industrial computer, be loaded with microscopic traffic simulation software and controller evaluation system; Interface module comprises software interface plug-in unit and controller translation interface; In traffic signal control group, comprise more than one traffic signal control to be measured;
Microscopic traffic simulation software is that road net model is set up in crossing, and total magnitude of traffic flow of each crossing in simulated environment is set, in simulation process, the magnitude of traffic flow of the crossing that microscopic traffic simulation software detects the phase place of Intersections in simulated environment and inspection car device in real time, sends to traffic signal control to be measured by interface module; Software interface plug-in unit is the dll plug-in unit that the api function that uses microscopic traffic simulation software to provide is write, when emulation starts, by microscopic traffic simulation Bootload; Controller translation interface has comprised different communication interfaces, supports different communications protocol, for connecting the traffic signal control to be measured of different communication interfaces; Traffic signal control is after obtaining the magnitude of traffic flow of each crossing and the phase place of signal lamp of interface module transmission, according to the steering logic of self, calculate the phase place of the signal lamp after crossing is optimized, the phase order of the bit of the signal lamp after optimizing is packaged in control strategy data, sends to interface module;
Software interface plug-in unit comprises: communication module, transport information extraction module and signal lamp phase place arrange module; Communication module is used for sending in real time the magnitude of traffic flow of each crossing and the phase place of signal lamp to traffic signal control, and receives the control strategy data that traffic signal control sends; The data that transport information extraction module periodically detects the crossing inspection car device in microscopic traffic simulation software emulation environment, be saved in a fixing traffic information file, the data that crossing inspection car device detects comprise car speed, inspection car device occupation rate, time headway and the magnitude of traffic flow; Signal lamp phase place arranges module from the control strategy data of the traffic signal control that receives, extracts the phase order of the bit of the signal lamp after optimizing, and according to the phase place of the signal lamp of crossing in the phase place command set simulated environment of the signal lamp after optimizing;
Controller evaluation system, after emulation finishes, reads the data in traffic information file, calculates the mean delay of crossing vehicle, average queue length and maximum queue length, and the control effect of traffic signal control is made to evaluation.
2. device for detecting performance according to claim 1, is characterized in that, described controller translation interface comprises RS232 interface, RS485 interface and wireless network communication interface.
3. device for detecting performance according to claim 1, it is characterized in that, described traffic signal control group, in it, can access the traffic signal control that adopts RS232 interface to carry out communication, the traffic signal control that adopts RS485 interface to carry out communication, and the traffic signal control that adopts wireless network to carry out communication.
4. a method for testing performance for the crossing traffic signal control based on device for detecting performance claimed in claim 1, is characterized in that, comprises the steps:
Step 1: testing crew, by traffic signal control access controller translation interface to be measured, starts microscopic traffic simulation software on industrial computer, loads road network file and software interface plug-in unit, and total magnitude of traffic flow of each crossing is set, and starts emulation;
Step 2: the magnitude of traffic flow of the crossing that microscopic traffic simulation software detects the phase place of Intersections in simulated environment and inspection car device in real time, sends to traffic signal control to be measured by the communication module in software interface plug-in unit;
Step 3: traffic signal control to be measured receives after the magnitude of traffic flow of crossing and the phase place of signal lamp of interface module transmission, according to the steering logic of self, calculate the phase place of the signal lamp after crossing is optimized, and the phase order of the bit of the signal lamp after optimizing is packaged in control strategy data, send to the communication module in software interface plug-in unit;
Step 4: the signal lamp phase place in software interface plug-in unit arranges module, the control strategy data that receive from communication module, extract the phase order of the bit of the signal lamp after optimizing, and according to the phase place of the signal lamp of crossing in the phase place command set simulated environment of the signal lamp after optimizing;
Step 5: the data that the transport information extraction module in software interface plug-in unit periodically detects the crossing inspection car device in microscopic traffic simulation software emulation environment, be saved in a fixing traffic information file, the data that crossing inspection car device detects comprise car speed, inspection car device occupation rate, time headway and the magnitude of traffic flow;
Step 6: after emulation finishes, controller evaluation system reads the data in traffic information file, calculates the mean delay of crossing vehicle, average queue length and maximum queue length, and the control effect of traffic signal control to be measured is made to evaluation.
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| CN104751670B (en) * | 2015-03-23 | 2017-03-08 | 同济大学 | A kind of urban traffic signal controls operational diagnostics system |
| CN106327903A (en) * | 2015-06-24 | 2017-01-11 | 公安部交通管理科学研究所 | Traffic signal controller function detection and scene system |
| CN106056905B (en) * | 2016-06-24 | 2018-11-20 | 北京工业大学 | Traffic control strategy hardware-in-loop simulation system and method based on multisensor |
| CN106652493B (en) * | 2016-12-29 | 2019-01-29 | 东南大学 | A kind of intersection signal optimal control method under car networking environment |
| CN107817696B (en) * | 2017-10-13 | 2021-01-05 | 武汉科技大学 | Microcosmic traffic semi-physical simulation tool |
| CN109606433B (en) * | 2018-12-25 | 2023-11-10 | 卡斯柯信号有限公司 | Road traffic signal simulation system applied to tramcar |
| CN110765613B (en) * | 2019-10-24 | 2023-03-21 | 电子科技大学 | Signal control and synchronization method of real-time microscopic traffic simulation system |
| CN111383453B (en) * | 2020-02-18 | 2022-05-20 | 山东摩西网络科技有限公司 | Traffic signal control on-line simulation and real-time tracking feedback system and operation method |
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| CN101615348B (en) * | 2009-07-20 | 2014-03-12 | 交通部公路科学研究所 | Signal switching method and equipment in traffic control simulation testing system |
| CN201522780U (en) * | 2009-07-20 | 2010-07-07 | 交通部公路科学研究所 | Signal exchange equipment in traffic control simulation test system |
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