Whistle detection and capture system

1.1 Construction Background

With the increasing traffic in urban areas, the whistling of motor vehicles has become an important source of urban noise. It is difficult to carry out effective management, making it a stubborn disease in traffic violations. According to Article 62 of the “Regulations on the Implementation of the Road Traffic Safety Law of the People's Republic of China”, driving a motorized vehicle shall not honk in an area or section where the horn is prohibited.

1.2 Product Introduction

GMI Video Technology Co., Ltd. has developed an automatic recording system for motorized whistling horns, which accurately identifies the squeaking horns in road traffic, captures evidence records, and manages the data platform to establish a set of traffic based on big data. The screaming speaker management system effectively implements the governance of such behaviors.

1.3 Product Networking Architecture

The system is divided into front-end information acquisition layer, intermediate network transmission layer and back-end platform. The front-end information acquisition layer includes:

1) Noise Acquisition Unit

2) Vehicle capture unit

3) Intelligent Analysis Terminal

● The noise collection unit is composed of an integrated sonar array sensor, which can accurately judge the horn sound in real time, accurately locate the sound source, and record the audio information containing the whistle sound.

● The function of the vehicle capture unit and the intelligent analysis terminal is to locate the vehicle in the image according to the sound source position, capture the vehicle characteristics and accurately identify the license plate, and record the illegal image and video information.

● The back-end information management platform mainly manages the image, audio and video information of illegal activities in multiple intersections of the city, and provides evidence for the law enforcement of the traffic road management department.

1.4 Typical Application Scenarios

Urban roads, highways, school hospital , research institutes, etc. are prohibited from whistling sections

1.5Program Features

● The system takes the lead in applying the internationally advanced acoustic array positioning technology to traffic management, and can accurately locate and identify vehicles whistling.

● The system uses professional signal processing algorithms in the field of spectrum technology to distinguish vehicle horn sound from other noises such as vehicle driving sound, braking sound, roaring sound and air conditioning sound, and extract horn sound from noisy environment accurately.

● The system recognizes the outline of the car body from the figure, accurately marks the illegal vehicle, and can track the vehicle until the license plate is recognized when the license plate is not clear or occluded.

Integrated Traffic Management System

1.1Construction background

Since the beginning of the 21st century, with the continuous rapid growth of China's economy and the continuous improvement of the income level of urban residents, the number of motor vehicles has begun to rise sharply, the capacity of road traffic facilities has become increasingly insufficient, and the structure and function of road networks are difficult to adapt to current traffic demands. Huge traffic pressure has become a bottleneck restricting the sustainable development of the social economy. To this end, the road traffic management department has studied and determined that “the use of information technology to support road construction, road management and road traffic management, the development of road traffic information should be synchronized with the development of road facilities and road traffic” Ideas, and start the construction of related road traffic informationization special projects.

1.2Product Profile

At present, traffic congestion often occurs on the roads carrying the traffic flow between the central urban areas in large and medium-sized cities throughout the country. The traffic congestion will also occur in the areas adjacent to the central urban areas in the morning and evening at rush hour. In order to curb the further aggravation of traffic congestion, according to the actual needs of customers, Jiemai Video directionally developed the Intelligent Transportation Integrated Management Platform. In Shanghai, Hangzhou, Nanjing and other cities, combined with the local regional characteristics and management needs, it launched a pilot project of road traffic information system, and simultaneously carried out signal control, electric alarm jacks, video surveillance and induction. The construction of cloth and other information systems has achieved remarkable results. Complete the pilot projects designated by customers to achieve full coverage of ITS, and support the traffic management needs of public security traffic management departments within the pilot area by building the basic framework of the local ITS management system, laying the foundation for gradually promoting the development of local road traffic informatization and intellectualization.

1.3 Product Architecture Design

GMI Video's Intelligent Transportation Integrated Management Information Platform is mainly based on GIS Geographic Information System. It integrates relevant resources, realizes data and information interoperability, initially establishes an information, intelligent and open integrated management platform, provides new ways and means for customer's Intelligent Transportation Management, and further improves the level of traffic management and traffic service.

The overall logical architecture of ITMS is shown in the following figure:

In the whole framework, the road traffic management information platform and business system are the core of the system. According to the needs of traffic management, the implementation of various instructions is completed; the operation environment and infrastructure provide support for the operation of the traffic management system; the standard and norms will provide technical support for the construction of the traffic management system; the information sharing and exchange will realize the comprehensive traffic information between the traffic police detachment and the city. Cooperative work among platform, traffic information collection and distribution platform of municipal traffic police headquarters and other business systems of public security.

1.4 Subsystem Features

Intelligent Transportation Management Information Platform integrates traffic command and control related subsystems, such as traffic video surveillance system, traffic guidance system, traffic signal control system, traffic condition publishing system, etc. It makes it possible to query and process the data of each subsystem in the software interface of a platform. The integrated subsystems are interrelated and can generate linkage operation, thus improving the crossover. The ability and efficiency of command and control.

● Video surveillance management

The video management subsystem provides the functions of camera access, third-party video system access, real-time video viewing, platform control, preset settings and calls, video playback and real-time video wall patrolling.

● Traffic Information Collection and Fusion Processing

The traffic information of the system comes from the Internet + company and video detector that provides traffic status data. Internet + company traffic status data is accessed through security measures such as gateways and security gateways. The module is responsible for accessing the traffic state information according to the interface provided by the Internet + company, and the traffic state information of the access is processed into the data format of the traffic information management subsystem after being analyzed and converged, and is imported into the internal data acquisition module. The traffic state data collected by the internal collection module are used for subsequent release and statistical analysis after the multi-element fusion processing.

● Dissemination and Guidance of Traffic Information

The release of traffic information is an important means to reduce traffic congestion. Traffic information publishing system can provide accurate traffic information for pedestrians and fleet managers, and facilitate flag adjustment of travel time, route and mode. The road condition information released by the guidance board can guide the drivers to avoid traffic accidents, traffic jams and other sections, and play a role in regulating the spatial and temporal distribution of traffic flow and balancing the traffic flow of the road network.

● Traffic condition treatment

The database of road traffic management information system acts as data center, gathering traffic status data accessed by different channels. After accumulating enough breadth and time depth, it can be used as the basis of large data analysis for traffic situation and intersection congestion prediction. The analysis results can be used as the basis of traffic integrated command such as optimization of signal control scheme of SCATS system and issuance of traffic guidance information.

Intelligent Transportation Management Information Platform (ITMP) also establishes the field facilities and user management system to realize facility management, facility maintenance, system operation and maintenance management and fault alarm mechanism; establishes a report statistics platform to achieve fault statistics and processing; and establishes a user management platform to realize the authority control and system function use of the system by different departments.

With the development and application of computer vision technology, intelligent traffic management information platform gathers a large number of pictures and video data. Through image analysis technology, it realizes the deep application based on pictures and videos, such as structured processing of pictures and videos for secondary search, and other functions. The intelligent operation and management of traffic can be further realized by using various cutting-edge scientific and technological means.

Traffic Violation Capture System

1.1Construction Background

With the rapid development of traffic construction and the popularization of motor vehicles in China, the number of criminal and public security cases related to roads and motor vehicles is increasing year by year. Violatory driving of vehicles and related illegal acts are the main causes of urban traffic disorder, traffic congestion and major traffic accidents. The rapid growth of urban population and the number of motor vehicles has led to increasing pressure on urban road traffic. Traffic accidents at intersections occur from time to time, which seriously threatens the safety of people's lives and property. Simply rely on artificial management, waste of human resources, the effect is not obvious.

1.2 Product Profile

Based on national and industry standards, the intelligent intersection high-definition composite detector independently designed and developed by GMI Video integrates video detection, license plate recognition, electronic police, security card and high-definition video coding functions.

High-definition composite detector does not need to lay or replace the ground inductance coil regularly, nor need additional image processing equipment, which greatly reduces the cost of construction, construction and maintenance, daily operation and maintenance, while improving work efficiency.

1.3Product Advantage

Compared with similar products on the market, GMI's high-definition composite detectors are concentrated in:

1.4 Product Network Architecture

GMI 's high-definition composite detector integrates traffic flow video detection, electronic police violation detection, and bayonet number detection. It supports real-time collection of video images of road detection areas for digital processing. By analyzing the image change of the detection area, image feature information is extracted, and the traveling state of the target vehicle is determined.

1.5 Function List

GMI's high-definition composite detector has powerful functions and can meet the customized traffic monitoring needs of customers. The specific functions and applications are listed in the following table:

Pedestrian crossing warning system

Construction background

According to public survey data, one person per day in the world is injured by a car every seven minutes. Every two hours or so, a pedestrian is killed in a car accident. Especially in the national provincial roads, county roads, village intersections, non-light control intersections where drivers have poor visibility, pedestrians and non-motor vehicles cross the road, causing a large proportion of traffic accidents, and often a major casualty accident. Most of them have always lacked effective scientific and technological means to prevent such accidents.

Product Profile

GMI's pedestrian crossing warning system combines video detection, behavior recognition, IoT communication, low-power LED and other technologies. It uses artificial intelligence and machine vision technology to automatically recognize pedestrian behavior and judge pedestrians who are about to cross the road. Flashing spikes, warning screen warnings, etc., reminding the past car deceleration and ritual, guiding pedestrians to pass safely, thus effectively avoiding traffic accidents.

Product Networking Architecture

The pedestrian crossing early warning system consists of pedestrian detector, flash nail lamp and pedestrian crossing warning sign. When the pedestrian crosses the intersection and enters the detection area, the pedestrian detector can trigger the flashing road nails to shine, and at the same time, the signal can be transmitted to the electronic pedestrian crossing warning signs on both sides of the road to give courtesy to pedestrians, which can warn the vehicles to slow down and pay attention to the pedestrians. It is conducive to increasing the safety of pedestrians at the intersection and reducing traffic accidents.

Typical Application Scenarios

This product can be widely used in the field of intelligent transportation:

● No pedestrian crossing signal control section in the city;

● Crossing of factories, enterprises, and schools, and frequent intersections;

● The city, county, district, provincial road, county and township road sections are selected and intersected at the village;

● Industrial parks, industrial parks and internal roads.

Cooperating with traffic management platform can obviously improve the efficiency of road traffic management and reduce the probability of traffic accidents.

Program Features

● The front-end detection equipment of the system adopts the machine learning method of motion region detection and HOG+SVM feature extraction, and detects the texture features of the pedestrian's head and shoulders in real time. When the extracted feature data is characterized as “Pedestrian”, the confidence is relatively high. An early warning signal can be generated. When the machine learning algorithm is training, the system introduces negative samples of the interference factors such as the marked lights, street lights, tree shadows, vehicles, rain and snow, so that the training algorithm has very strong scene adaptability and can be more effective. Pedestrian detection is performed using visual analysis.

● The system uses the LED lights and flashing stud lights on the crosswalk sign, which is far away from the distance, and the dynamic warning effect is better, which maximizes the driver's attention visually.