CN207123946U - For the Intelligent traffic signal lamp control device of pedestrian accumulation regions - Google Patents

Abstract

The utility model relates to an intelligent traffic signal lamp control device for pedestrian gathering areas. The device consists of a power supply module, an image acquisition module, a decision-making control module, an underground monitoring module, a signal display module and an interception module; wherein, the power supply module is connected with the image acquisition module and the decision-making control module respectively; the image acquisition module, the underground monitoring module, The signal display module and the interception module are respectively connected with the decision-making control module. The data acquired by the utility model includes information on the number of pedestrians in addition to vehicle information, which fully guarantees the travel efficiency and safety of pedestrians on the original basis, and avoids a series of problems caused by the neglect of pedestrians, an important traffic element.

Description

Intelligent Traffic Light Control Device for Pedestrian Areas

technical field

The utility model relates to the field of signal lamps, in particular to an intelligent traffic signal lamp control device. The device is an intelligent traffic light controlled by Raspberry Pi and STM32 MCU.

Background technique

With the rapid development of science and technology in today's era, traffic problems are becoming more and more serious, and travel safety and travel efficiency are closely related to people's lives. At some intersections dominated by pedestrians, sometimes there are many pedestrians and few vehicles but the red light is very long, causing pedestrians to run the red light collectively. Sometimes there are few pedestrians but frequently ask vehicles to stop to let pedestrians pass. Happens in this moment. Ordinary traffic lights cannot be adjusted intelligently, and it is a waste of manpower and material resources to invest in all intersections, and it is impossible to accurately estimate the situation on the spot, and it is impossible to ensure safe and efficient travel for pedestrians.

In the past three years, a lot of intelligent traffic lights have sprung up, such as a kind of signal light control system disclosed in Chinese patent CN205857083U, which includes a signal light body and a sidewalk intercepting lifting rail, and the sidewalk intercepting lifting rail is distributed along the width direction of the sidewalk. However, this control system only controls the walking direction of pedestrians, and does not adjust the time distribution of signal lights according to the flow of people and traffic, and does not change the control of traffic lights themselves. There are also some intelligent traffic lights that have set the signal light time adjustment, but only according to the traffic flow and do not consider the waiting time and passing rate of pedestrians. For example, Chinese patent CN105679050A discloses a kind of intelligent traffic signal light, in which the ground sense line, PLC controller, computer processing system and signal light, the ground sense line and the signal light are respectively connected with the PLC controller, and then the system automatically adjusts according to the size of the traffic flow Time, so that the time of direction with few cars or no cars is automatically shortened, and the time of direction with more cars is automatically changed. However, this system does not take into account the waiting time in pedestrian gathering areas, and it is not universal in pedestrian gathering areas such as schools and shopping malls, and cannot solve the traffic problems caused by pedestrians. At the same time, in the foggy weather, rainy weather and severe weather conditions, the camera image recognition system cannot work normally, causing traffic disorder, which leads to many traffic accidents. In addition, in special areas where a large number of pedestrians gather, pedestrians often run red lights. For example, there are many tourists in scenic spots, and often the signal lights cannot control the coordination of a large number of people and vehicles, resulting in serious traffic chaos.

Utility model content

Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide an intelligent traffic signal light control device for pedestrian gathering areas. Through the setting of underground monitoring module, signal display module and interception module, the device uses cameras to collect information on both pedestrians and vehicles. The single-chip microcomputer adjusts the distribution of road rights in real time, and cooperates with other related hardware to improve the current traffic light system.

The technical solution adopted by the utility model to solve the technical problem is:

An intelligent traffic signal control device for pedestrian gathering areas, the device includes a power supply module, an image acquisition module, a control decision module, an underground monitoring module, a signal display module and an interception module; wherein, the power supply module is connected with the image acquisition module, The control decision-making module is connected; the image acquisition module, the underground monitoring module, the signal display module, and the interception module are respectively connected with the control decision-making module;

The power supply module includes a solar panel and a storage battery, and the solar panel is connected to the storage battery;

The image acquisition module includes a steering gear and a camera, and the steering gear is mounted on the camera;

The underground detection module includes a geomagnetic coil, a pressure sensor, a geomagnetic coil inductor and a pressure sensor amplifier, the geomagnetic coil is connected to the geomagnetic coil inductor, and the pressure sensor is connected to the pressure sensor amplifier;

The signal light display module includes a signal light system and a countdown display screen;

The interception module includes a mechanical interception module and a voice interception module which are independent of each other; wherein, the mechanical interception module is specifically an infrared sensor and a drop rod device; the voice interception module is specifically an M3 voice alarm device, which is arranged on a light pole of a pedestrian traffic light ;

Described control decision-making module comprises mutually independent STM32 single-chip microcomputer and raspberry pie controller; Wherein, STM32 single-chip microcomputer connects steering gear, and raspberry pie controller connects camera, geomagnetic coil inductor, pressure sensor amplifier, signal light system, voice interception respectively modules and mechanical interception modules.

The length of each group of the geomagnetic coils is 5-9 meters, and they are buried horizontally under the road surface, and the interval between two adjacent groups of coils is 3-5 meters; the total number of geomagnetic coils is 30-40 groups, and each group of geomagnetic coils is connected to a geomagnetic coil at the end. Coil inductor; the pressure sensor is located underground on the sidewalk near the sidewalk, and the distribution area is a square whose side length is the same as the width of the crosswalk. There are five pressure sensors, four of which are distributed at the four corners of the square, and one is at the center of the square. Each pressure sensor is connected to a pressure sensor amplifier.

Compared with the prior art, the beneficial effects of the utility model are:

The device of the utility model can solve the problem that the signal lamp cannot control the coordination of a large number of people flow and vehicle flow, and the traffic order is chaotic and the like. In bad weather, the underground monitoring module will detect vehicles and pedestrian flow, and when vehicles pass by, the voice interception module and mechanical interception module will prevent pedestrians from passing through. When there are many tourists in the scenic spot, the underground monitoring module can also monitor the passage of vehicles at this time, and then the voice interception module and the mechanical interception module prevent tourists from running red lights as much as possible. In many similar situations, this device shows great advantages compared with other traffic lights. The data acquired by the device includes information on the number of pedestrians in addition to vehicle information, which fully guarantees the travel efficiency and safety of pedestrians on the original basis, and avoids a series of problems caused by the neglect of pedestrians, an important traffic element.

Description of drawings

Fig. 1 is the structural diagram of the utility model intelligent traffic signal light system.

Fig. 2 is the work flow diagram of the utility model intelligent traffic signal light device.

In the figure, 1-power supply module, 2-image acquisition module, 3-control decision-making module, 4-underground monitoring module, 5-signal display module, 6-interception module.

Detailed ways

The embodiment shown in Figure 1 shows that the composition of the utility model intelligent traffic signal light device includes a power supply module 1, an image acquisition module 2, a control decision module 3, an underground monitoring module 4, a signal display module 5 and an interception module 6. Among them, the power supply module 1 is connected with the image acquisition module 2 and the control decision-making module 3 respectively, and the power supply module 1 uses photovoltaic power generation to provide electric energy for the image acquisition module 2 and the control decision-making module 3; the image acquisition module 2, the underground monitoring module 4, and the signal display module 5. The interception module 6 is connected to the control decision-making module 3 respectively. When the weather is good and the light is sufficient, the image acquisition module 2 transmits signals to the control decision-making module 3; After the decision is made, the signal is passed to the signal display module 5 and the interception module 6 . The signal display module 5 is for displaying signal lamps and countdown seconds thereof. The interception module 6 is composed of a voice interception module and a mechanical interception module. When someone forcibly runs through a red light, this module will be triggered to perform voice warning and pole drop interception.

The power supply module includes a solar panel and a storage battery, the solar panel is connected to the storage battery, and the storage battery supplies power to components in the image acquisition module 3 and the control decision-making module 3 .

The image acquisition module includes a steering gear and a camera, and the steering gear is mounted on the camera.

The underground detection module includes a geomagnetic coil, a pressure sensor, a geomagnetic coil inductor and a pressure sensor amplifier, the geomagnetic coil is connected to the geomagnetic coil inductor, and the pressure sensor is connected to the pressure sensor amplifier.

The signal light display module includes a signal light and a countdown display screen.

The interception module includes a mechanical interception module and a voice interception module that are independent of each other; wherein the mechanical interception module 6 is specifically an infrared sensor and a pole drop device triggered by it, wherein the infrared sensor is located at the intersection of a pedestrian crosswalk and a sidewalk, The drop pole device is located in front of the crosswalk; the voice interception module is specifically an M3 voice alarm device, which is set on the light pole of the pedestrian traffic light;

Described control decision-making module comprises mutually independent STM32 single-chip microcomputer and raspberry pie controller; Wherein, STM32 single-chip microcomputer connects steering gear, and raspberry pie controller connects camera, geomagnetic coil inductor, pressure sensor amplifier, signal light system, voice interception respectively modules and mechanical interception modules.

Among them, the laying method of the geomagnetic coil is as follows:

Take a 10-meter-wide road as an example, and the rest of the width can be calculated proportionally.

The size of the geomagnetic coil is 9 meters long and 80-100 centimeters wide. The long side of the coil is perpendicular to the sidewalk and is 30-50 centimeters away from the side of the road. The total length is about 120 meters. Grooves on the road are 3-5 mm wide and 40-50 mm deep. The width and depth of the grooving should be uniform. There should be no metal within 50 cm around the coil, and no 220V power supply lines within 1 meter. A set of geomagnetic coils are placed every three meters along the traveling direction of the car. And install independent sensors in series at the end of each group of geomagnetic coils, and connect them to the Raspberry Pi controller.

The pressure sensor is located underground on the sidewalk near the sidewalk. The layout area is a square whose side length is the same as the width of the crosswalk. Five-point sampling method is adopted in the area. Each sensor is connected to the sensor amplifier and then connected to the Raspberry Pi controller.

The embodiment shown in Fig. 2 shows that the concrete working process of the utility model intelligent traffic signal light device is:

(1) Initialization: The system enters the working state, checks the connection and initialization of each part, and enters (2) after the inspection is correct.

(2) Image acquisition module: The image acquisition module uses a camera to collect information, uses opencv's own face detection standard and vehicle detection standard to detect, processes the collected information in real time, and returns two quantities to the control decision module. If the face and the vehicle cannot be recognized, proceed to step (3).

(3) Underground monitoring module: The underground monitoring module uses geomagnetic coils and pressure sensors to collect information. The geomagnetic coils are placed at equal intervals underground outside the traffic lights. When a car passes by, the signal generated by the geomagnetic coil is transmitted to the geomagnetic coil sensor, and then the signal is transmitted to the control decision module. The five-point method is used to place the pressure sensor near the signal lamp to estimate the number of waiting pedestrians, and the obtained signal is transmitted to the pressure sensor amplifier, and the pressure sensor amplifier transmits its signal to the control decision-making module.

(4) Control decision-making module: decision-making is processed according to pre-set information, and the optimal time is selected according to the set information and the obtained quantity. Then according to the control decision signal display module and interception module.

(5) Signal display module: Control the signal light display system according to the received decision, mainly including two parts, the color control part of the traffic light and the countdown display part of the timer.

(6) interception module, this part is made up of voice interception module and mechanical interception module. When the pedestrian light is red, the infrared sensor detects that a pedestrian is about to cross the road, the voice interception module will remind, and the mechanical interception module will also drop the pole to stop it. When the light is green, the voice interception module will stop the alarm and the mechanical interception module will also Put away the pole.

This completes the control of intersections and fundamentally solves the problem of pedestrians running red lights.

The software or protocol involved in the implementation of the above steps, as well as the instruction setting and image recognition technology of the related single-chip microcomputer belong to the prior art.

Example 1

The utility model intelligent traffic signal light device comprises a signal light, a camera, an underground monitor and a controller. Module, 4-underground monitoring module, 5-signal display module and 6-interception module are connected on 3-control decision-making module. Among them, the 1-power supply module provides the required electric energy for the storage battery through photovoltaic power generation, the solar panel is a mid-square monocrystalline solar panel, and the storage battery is a Dingdong 12V8AH storage battery; the 2-image acquisition module is specifically Hikvision DS -2CE16C3T-IT3 camera, STM32F103 single-chip microcomputer; the 3-control decision-making module adopts the Raspberry Pi controller; the 4-underground monitoring module is specifically the SZZN geomagnetic coil, the SZZN VD_110 ground sensing coil vehicle monitor, and Kunlun Precision DYLY- 102 pull pressure sensor; the 5-signal display module adopts Aoxun JXZ450/2-40-RYG-2C display; the 6-interception module is specifically M12 laser-to-shoot infrared sensor, drop rod device, and M3 voice alarm device.

The device reserves the solar panel to charge the battery, and uses the battery to power the entire system, that is, the system uses solar energy to work, realizing the concept of environmental protection and low carbon. Inside the device, STM32 is used to control the steering gear to rotate the camera, so as to collect relevant information by aiming at different areas. In normal weather, the camera recognizes the figure of the person to count the number of people. This statistical method is accurate and simple, which not only avoids the influence of the dispersion of waiting pedestrians, but also adapts to the environment where primary school students cannot carry out GPS statistics without mobile phones, and it is accurate without restricting the area where pedestrians are waiting. The number of people counted. At the same time, the camera counts the number of traffic flows, and then transmits the statistical traffic signals to the control decision-making module in the Raspberry Pi. In rainy, snowy, foggy and hazy weather, the recognition ability of the camera is reduced. The pressure sensor is used to detect the number of waiting pedestrians, and the geomagnetic coil is used to detect the number of traffic flows. Similarly, the data is transmitted to the control decision-making module. The control decision-making module integrates the number of vehicles and pedestrians received, and finally obtains the best decision after calculation to allocate traffic light time. If a pedestrian runs a red light, the voice interception module will sound to remind the red light runner, and the mechanical interception module will raise the railing to intercept the red light runner to ensure the safety of pedestrians. At the same time, a hand-held control terminal is reserved. When the intersection congestion is managed by the traffic police, the system will give priority to controlling the traffic lights according to the instructions issued by the hand-held terminal to complete the man-machine integrated control. Maximize the fairness of the distribution of road rights, adapt to the traffic rules of the flow of vehicles and people, truly reduce the Chinese style of crossing the road, reduce the rate of traffic accidents, and at the same time achieve high efficiency of transportation.

Matters not mentioned in the utility model are known technologies.

Claims (2)

1. A kind of intelligent traffic light control device for pedestrian gathering area, it is characterized in that the composition of this device comprises power supply module, image acquisition module, control decision-making module, underground monitoring module, signal display module and interception module; Wherein, power supply module is respectively It is connected with the image acquisition module and the control decision-making module; the image acquisition module, the underground monitoring module, the signal display module and the interception module are respectively connected with the control decision-making module; The power supply module includes a solar panel and a storage battery, and the solar panel is connected to the storage battery; The image acquisition module includes a steering gear and a camera, and the steering gear is mounted on the camera; The underground detection module includes a geomagnetic coil, a pressure sensor, a geomagnetic coil inductor and a pressure sensor amplifier, the geomagnetic coil is connected to the geomagnetic coil inductor, and the pressure sensor is connected to the pressure sensor amplifier; The signal light display module includes a signal light system and a countdown display screen; The interception module includes a mechanical interception module and a voice interception module which are independent of each other; wherein, the mechanical interception module is specifically an infrared sensor and a drop pole device; the voice interception module is an M3 voice alarm device, which is arranged on a light pole of a pedestrian traffic light; Described control decision-making module comprises mutually independent STM32 single-chip microcomputer and raspberry pie controller; Wherein, STM32 single-chip microcomputer connects steering gear, and raspberry pie controller connects camera, geomagnetic coil inductor, pressure sensor amplifier, signal light system, voice interception respectively modules and mechanical interception modules. 2. The intelligent traffic signal control device for pedestrian gathering areas as claimed in claim 1, characterized in that each set of geomagnetic coils has a length of 5 to 9 meters and is buried horizontally under the road surface. The interval is 3 to 5 meters; there are 30 to 40 sets of geomagnetic coils in total, and a geomagnetic coil sensor is connected to the end of each group of geomagnetic coils; the pressure sensor is located underground on the sidewalk near the sidewalk, and the distribution area is that the side length is the same as the width of the pedestrian crossing There are five pressure sensors in a square, four are distributed at the four corners of the square, and one is in the center of the square. Each pressure sensor is connected to a pressure sensor amplifier.