Semiconductor HS code verification

List of contents of this article:

• 1,Semiconductor HS code verification In intelligent traffic, the similarities and differences of monitoring, traffic jams and electronic police
• 2,Functions of the front-end acquisition subsystem of urban transportation card port monitoring
• 3, What is the public security 619 smart card
< Li style='margin-bottom: 3px;list-style: none'>4, What are the four types of electronic police points, intelligent traffic jam points, fixed speed measurement points, traffic monitoring points...

In intelligent traffic, monitoring, traffic jams, electronic police The similarities and differences

The electronic police and the traffic jam are both traffic violation monitoring equipment, but their installation locations and monitoring objects are slightly different. The electronic alarm is mainly set up on the roadside to monitor running red lights, going backwards and other behaviors;The traffic jam is installed on the road, and illegal vehicles are captured through license plate recognition technology, which can monitor a variety of traffic violations.

The control method is different: the electronic eye is usually automatically controlled and captured by the computer; the surveillance camera is usually operated manually. Different composition: the fixed electronic eye speedometer camera is usually equipped with flash lights next to it; but the camera does not.

But if the software is the same, it can be connected together. Within a 30-meter road monitoring range, colorful license plates, car bodies and other moving objects can be photographed stably and clearly under various light conditions. It is mainly used for toll cards and entrances and exits. The lights are on when the car comes, and the lights go out when the car goes. Realize intelligent license plate monitoring.

CityThe function of the front-end acquisition subsystem of transportation card port monitoring

The function of the front-end equipment is to realize the acquisition of video signals and receive remote control commands from the monitoring center, and accurately collect the video signals required by the command center in real time.

The main functions of the intelligent traffic system include the following: the application subsystem includes traffic information acquisition system, traffic light control system, traffic induction system, and parking induction system. Make full use of the collected information, release the corresponding traffic congestion situation in a timely manner, guide the best route information, and provide reference for travelers.

Main functions of the system ☆ Intelligent monitoring function; ■ Security area detection ■ Night haunting ■ Abnormal chase and fighting ■ Auxiliary public security jam ■ Number of people statistics ☆ Monitoring images, video recording; ☆ Video call and playback;☆ Remote video angle control; ☆ Manual capture of illegal images.

The whole system has functions such as management and maintenance, statistics, query and report printing to realize the monitoring and disposal of suspected vehicles such as traffic violations and hit-and-run. It is recorded around the clock, with a recognition rate of more than 95%. The picture shows Chinese characters, letters and numbers, which are clearly recognizable.

What is the public security 619 smart card port

1. The card port relies on the cameras installed at the road entrance of major transportation hubs, combined with intelligent instruments and software to realize the intelligent control of road traffic, such as the current Traffic flow, sectional vehicle counting, vehicle feature retrieval, and some illegal capture functions.

2. The smart card port isIt refers to the video surveillance technology, network technology, automatic identification technology, photoelectric technology, image processing technology, pattern recognition technology, etc. to take images of each passing car, and automatically identify the license plate of the vehicle. The information data of the collected vehicles are saved in the server database.

3. Traffic jams refer to a road traffic on-site monitoring system that relies on specific places on the road, such as toll stations, traffic or public security checkpoints, to shoot, record and process all motor vehicles passing through the traffic jam.

What are the four types of electronic police point, intelligent card point, fixed speed measurement point, traffic monitoring point...

1. The principle of electronic police (referring to the capture of running a red light, the same below) is basically the same as that of fixed speed measurement. One application is the principle of electromagnetic induction, and the ground sensing coil is used to trigger capture. , the other is to use video mobile detection technology to trigger capture.

2. The fourth type is the traffic monitoring camera. This kind of camera will not capture any illegal acts, but is only used to count traffic flow. It is generally installed on the police or the pole of the signal light installed with electricity.Unlike parking violation capture, the camera is generally covered with a transparent round cover, which is more similar to the spherical security surveillance.

3. Second, speedometer camera. This kind of camera is used to measure speed and capture speeding vehicles. This kind of camera is shaped like a rectangular box. Usually, there will be an indicator sign at the previous intersection indicating that there is a speedometer and maximum speed ahead.

4. Road monitoring includes road traffic (road conditions) TV monitoring, motor vehicle traffic violations (illegal) monitoring and capturing, intelligent traffic jams (traffic flow information collection) and other systems. Road condition monitoring is usually based on intelligent fast ball monitoring, and the monitoring points are distributed at urban road intersections and key sections where traffic flow and people are relatively concentrated.

5. The test principle in front of you is: launch radar waves twice and locate two times according to the echo.At the position of the vehicle, the two position coordinates are subtracted to obtain how far the vehicle has traveled in the two radar wave emission times. The distance is divided by the radar wave emission time interval to obtain the vehicle speed.