CN113570880A - Traffic light intelligent control system based on STM32 - Google Patents
Traffic light intelligent control system based on STM32 Download PDFInfo
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- CN113570880A CN113570880A CN202110716275.5A CN202110716275A CN113570880A CN 113570880 A CN113570880 A CN 113570880A CN 202110716275 A CN202110716275 A CN 202110716275A CN 113570880 A CN113570880 A CN 113570880A
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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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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/90—Additional features
- G08C2201/93—Remote control using other portable devices, e.g. mobile phone, PDA, laptop
Abstract
The invention discloses an STM 32-based traffic light intelligent control system, which comprises a road traffic flow intelligent detection module, a signal light control module, an intelligent control host and an STM32 control core, wherein the road traffic flow intelligent detection module is connected with the signal light control module through a bus; the road traffic flow intelligent detection module realizes real-time detection of traffic flow by using an intelligent camera; the signal lamp control module is used for realizing intelligent control on the signal lamp according to the acquired traffic data based on the data acquired by the intelligent camera; the intelligent control host machine is in information interaction with the STM32 control core and comprises a Zigbee module, a vehicle speed detection module and a Bluetooth module; the vehicle speed detection module is arranged on a road and transmits data to be processed and compared by detecting vehicle speed to obtain the congestion condition of a traffic intersection; the intelligent control host is used as a central brain, and the time duration of the traffic lights at the intersection is comprehensively obtained according to the intersection congestion information detected by each module. The intelligent traffic light control system realizes intelligent control on the traffic light, and can assist in realizing more efficient and comprehensive traffic management.
Description
Technical Field
The invention belongs to the technical field of intelligent traffic lights, and particularly relates to an STM 32-based traffic light intelligent control system.
Background
At present, various traffic lights are arranged at intersections of various urban roads, and the traffic lights become effective ways for dredging various large traffic pavements, solving traffic jams and guaranteeing traffic order. However, with the progress of society, the conventional traffic lights are difficult to meet the requirements of modern society, especially when the traffic roads are congested due to high traffic flow, and in this time, the conventional traffic lights show various problems, such as incapability of flexibly changing the on/off and time of the traffic lights according to the congestion conditions of the roads, so that the conventional traffic lights need to improve the function level to meet the requirements of the modern society on the traffic efficiency of the roads.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art, provides an STM 32-based traffic light intelligent control system, improves the integration level of the control system, realizes the accurate control of traffic lights and has high value and practicability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the traffic light intelligent control system based on the STM32 comprises a road traffic flow intelligent detection module, a signal light control module, an intelligent control host and an STM32 control core;
the road traffic flow intelligent detection module realizes real-time detection of traffic flow by using an intelligent camera and realizes detection of different traffic participation objects through video;
the signal lamp control module is used for realizing intelligent control of the signal lamp according to the acquired traffic data based on the data acquired by the intelligent camera, ensuring the scientificity and instantaneity of control decision through a related algorithm of traffic flow analysis, dredging in time when the traffic flow is large and keeping the road surface smooth when the traffic flow is small;
the intelligent control host computer is used as a center brain and comprehensively obtains and controls the time of traffic lights at the intersection according to intersection congestion information detected by the road traffic flow intelligent detection module, the vehicle speed detection module and the intelligent camera.
Further, the time duration of comprehensively obtaining the intersection traffic lights is specifically as follows:
calculating the distance between the entrance and the exit of the road to obtain the distance of the vehicle to be driven;
detecting the average running speed of the vehicles through an intelligent camera, dividing the distance by the average running speed to obtain the time of the vehicles, calculating to obtain how many vehicles jam in a road section in a certain period of time according to the running time of the vehicles and the number of the vehicles running into an entrance at the same time at the entrance, setting an upper limit threshold value of vehicle jam, and adjusting the street lamps to green lamps in time to relieve the road jam condition when the upper limit threshold value is equal to or greater than the upper limit threshold value; the specific formula is as follows:
distance between the entrance and the exit of the road is x, average traveling speed of the vehicle is y, average time t of the vehicle from the entrance to the exit:
t＝x/y
the number of vehicles driving into the entrance at the same time at the entrance is set as w, and the total number of vehicles z jammed in the section during time t:
z＝t*w
and (3) setting the upper limit threshold value of the vehicle congestion in the road section as a, and when z > is equal to a, displaying a green light on the street lamp to relieve the road congestion condition.
Furthermore, the vehicle speed detection module is arranged at the intersection, transmits data to the intelligent control host by detecting vehicle speed, and acquires the number of vehicles entering the road entrance at the same moment through the intelligent camera to obtain the total number of the vehicles remaining in the road section in the time period from the road entrance to the road exit, so as to obtain the congestion condition of the traffic intersection.
Furthermore, the Zigbee module is used for communication, and sends corresponding control signals to the traffic light module, and the traffic light module relieves the pressure of intersection congestion according to the real-time change condition of the intersection.
Furthermore, the Bluetooth module is used for communication, and STM32 control core passes through a bluetooth module of serial ports extension, realizes the communication of bluetooth and cell-phone and controls traffic lights intelligence control system with the help of the cell-phone, realizes the bluetooth communication operation of short range.
Further, the STM32 control core specifically adopts a microprocessor STM32F103ZET 6.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention fully utilizes the characteristics of high STM32 processing speed, rich interfaces and the like, improves the integration level of a control system and realizes the accurate control of traffic lights. The control system is designed by adopting a modularization method, and abundant peripheral resources on the STM32 chip are fully utilized, so that the independence of each module can be ensured, and the mutual contact of all parts can be realized.
Drawings
FIG. 1 is a block diagram of the architecture of the system of the present invention;
fig. 2 is a flowchart of the operation of the present embodiment.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
As shown in FIG. 1, the traffic light intelligent control system based on STM32 comprises a road traffic flow intelligent detection module, a signal light control module, an intelligent control host and an STM32 control core;
the road traffic flow intelligent detection module realizes real-time detection of traffic flow by using an intelligent camera and realizes detection of different traffic participation objects through video; besides the conventional vehicle detection, the mixed-line detection can be realized, and the detection function is realized mainly by detecting different traffic participation objects through videos. The vehicle detection range mainly focuses on vehicles in a lane, and from the detection program, firstly, the intelligent camera can capture the vehicles in the lane, and analyze vehicle information such as license plates, and related detection data can be uploaded to a control center. The intelligent analysis and the information acquisition of the road traffic flow are realized by applying the intelligent camera, and more efficient and comprehensive traffic management can be realized in an auxiliary manner.
The signal lamp control module is used for realizing intelligent control of the signal lamp according to the acquired traffic data based on the data acquired by the intelligent camera and simultaneously ensuring the scientificity and instantaneity of control decision through a related algorithm of traffic flow analysis; on the basis, the current traffic condition is correctly judged and processed, and finally the actual alternating current flow is combined to scientifically adjust and improve.
The intelligent control host computer is used as a center brain and comprehensively obtains and controls the time of traffic lights at the intersection according to intersection congestion information detected by the road traffic flow intelligent detection module, the vehicle speed detection module and the intelligent camera.
In this embodiment, the speed detection module is arranged at the intersection, transmits data to the intelligent control host by detecting the speed of the vehicle, and acquires the number of vehicles entering the road entrance at the same moment through the intelligent camera, so as to obtain the total number of the remaining vehicles in the road section within the time when the vehicles arrive at the road exit from the road entrance, thereby obtaining the congestion condition of the traffic intersection.
In this embodiment, the Zigbee module is used for communication, and sends a corresponding control signal to the traffic light module, and the traffic light module relieves the pressure of intersection congestion according to the real-time change condition of the intersection.
In this embodiment, the bluetooth module is used for communication, and STM32 control core passes through a bluetooth module of serial ports extension, realizes the communication of bluetooth and cell-phone and controls traffic lights intelligence control system with the help of the cell-phone, realizes the bluetooth communication operation of short range.
In the embodiment, the STM32 control core specifically adopts a microprocessor STM32F103ZET 6.
In this embodiment, the time duration of the intersection traffic lights obtained comprehensively is specifically:
calculating the distance between the entrance and the exit of the road to obtain the distance of the vehicle to be driven;
detecting the average running speed of the vehicles through an intelligent camera, dividing the distance by the average running speed to obtain the time of the vehicles, calculating to obtain how many vehicles jam in a road section in a certain period of time according to the running time of the vehicles and the number of the vehicles running into an entrance at the same time at the entrance, setting an upper limit threshold value of vehicle jam, and adjusting the street lamps to green lamps in time to relieve the road jam condition when the upper limit threshold value is equal to or greater than the upper limit threshold value; the specific formula is as follows:
distance between the entrance and the exit of the road is x, average traveling speed of the vehicle is y, average time t of the vehicle from the entrance to the exit:
t＝x/y
the number of vehicles driving into the entrance at the same time at the entrance is set as w, and the total number of vehicles z jammed in the section during time t:
z＝t*w
and (3) setting the upper limit threshold value of the vehicle congestion in the road section as a, and when z > is equal to a, displaying a green light on the street lamp to relieve the road congestion condition.
As shown in fig. 2, it is a flow chart of the system of the present embodiment, and the system first performs initialization, and then detects the speed of the road vehicle to determine the traffic jam. If the traffic is congested, the STM32 controls the core to control traffic lights and evacuate road traffic; if the traffic condition is good, the STM32 control core controls the traffic light to keep good road traffic.
It should also be noted that in this specification, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The traffic light intelligent control system based on the STM32 is characterized by comprising a road traffic flow intelligent detection module, a signal light control module, an intelligent control host and an STM32 control core;
the road traffic flow intelligent detection module realizes real-time detection of traffic flow by using an intelligent camera and realizes detection of different traffic participation objects through video;
the signal lamp control module is used for realizing intelligent control of the signal lamp according to the acquired traffic data based on the data acquired by the intelligent camera, ensuring the scientificity and instantaneity of control decision through a related algorithm of traffic flow analysis, dredging in time when the traffic flow is large and keeping the road surface smooth when the traffic flow is small;
the intelligent control host computer is used as a center brain and comprehensively obtains and controls the time of traffic lights at the intersection according to intersection congestion information detected by the road traffic flow intelligent detection module, the vehicle speed detection module and the intelligent camera.
2. The STM 32-based traffic light intelligent control system according to claim 1, wherein the time duration of the intersection traffic light obtained comprehensively is specifically:
calculating the distance between the entrance and the exit of the road to obtain the distance of the vehicle to be driven;
detecting the average running speed of the vehicles through an intelligent camera, dividing the distance by the average running speed to obtain the time of the vehicles, calculating to obtain how many vehicles jam in a road section in a certain period of time according to the running time of the vehicles and the number of the vehicles running into an entrance at the same time at the entrance, setting an upper limit threshold value of vehicle jam, and adjusting the street lamps to green lamps in time to relieve the road jam condition when the upper limit threshold value is equal to or greater than the upper limit threshold value; the specific formula is as follows:
distance between the entrance and the exit of the road is x, average traveling speed of the vehicle is y, average time t of the vehicle from the entrance to the exit:
t＝x/y
the number of vehicles driving into the entrance at the same time at the entrance is set as w, and the total number of vehicles z jammed in the section during time t:
z＝t*w
and (3) setting the upper limit threshold value of the vehicle congestion in the road section as a, and when z > is equal to a, displaying a green light on the street lamp to relieve the road congestion condition.
3. The STM 32-based traffic light intelligent control system according to claim 1, wherein the vehicle speed detection module is arranged at an intersection, data is transmitted to the intelligent control host by detecting vehicle speed, the intelligent camera collects the number of vehicles entering a road entrance at the same time, the total number of vehicles remaining in the road section during the time when the vehicles arrive at the road exit from the road entrance is obtained, and the congestion condition of the traffic intersection is obtained.
4. The STM 32-based traffic light intelligent control system according to claim 1, wherein the Zigbee module is used for communication, and sends a corresponding control signal to the traffic light module, so that the traffic light module relieves the pressure of crossing congestion according to the real-time change of the crossing.
5. The STM 32-based traffic light intelligent control system of claim 1, wherein the Bluetooth module is used for communication, the STM32 control core extends a Bluetooth module through a serial port to realize communication between Bluetooth and a mobile phone, and the traffic light intelligent control system is controlled by the mobile phone to realize short-range Bluetooth communication operation.
6. An STM 32-based traffic light intelligent control system as claimed in claim 1, wherein the STM32 control core specifically adopts a microprocessor STM32F103ZET 6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115440052A (en) * | 2022-11-09 | 2022-12-06 | 成都工业职业技术学院 | Traffic flow control method and device based on big data |
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