Millimeter-wave radar sensor speed measurement and collision avoidance help railway/campus/industrial park safety warning. Hump is a shunting device that uses train gravity to slide vehicles. It is located at one or both ends of the station shunting yard to improve shunting efficiency and reduce staff and Labor intensity. The main task of the hump shunting is to dismantle most of the freight trains entering and leaving the station, and assist the peak-tail pull-out line to assemble when necessary. The work quality of the marshalling yard is important to ensure the safety and punctuality of the trains on the railway network, speed up the turnover of locomotives and vehicles, and fully complete the entire railway Transport tasks play an important role.
The key to increasing the freight volume of railways is to improve the operating efficiency of marshalling yards and shorten the dwell time of locomotives at the stations. Since the hump automatic control system uses computers to complete three aspects of information processing, road control and speed control, realizing the automation of marshalling yard operation is an important way to improve the efficiency of reorganization, ensure operation safety and improve working conditions.
Among them, the millimeter-wave radar sensor speed measurement and anti-collision radar is conducive to improving the automation degree of the hump field. When the speed of the train is adjusted, the speed will change rapidly, and the speed measuring equipment is required to measure accurately and timely, and the entire speed control section is required to continuously measure the speed of the vehicle. The radar is installed in the traffic information detection and integrates 24GHz circuit technology and advanced signal processing technology. It has high speed measurement accuracy, simple debugging, high stability, convenient installation and movement, and can detect multiple train targets on 1 to 4 tracks. Multi-vehicle parallel interference and other functions have strong environmental adaptability, and the detection performance is not disturbed by external environments such as light, dust, rain and snow. Therefore, it has played a positive role in improving the automation level of the railway speed control system.
In addition to speed measurement and anti-collision in railway shunting hump operation, millimeter wave radar sensors can also be used in railway engineering, overhaul, stations, bridges, tunnels, engineering and local railway departments for construction slow-moving speed measurement on various track lines. Through the speed feedback from the speed measuring radar, the high-definition camera is integrated, and the capture host is controlled to realize the movement capture of the train and ensure the safety of railway construction and train entry.
How can millimeter wave radar sensors help realize speed limit early warning in campuses, industrial parks, logistics parks and other parks? The radar speed measurement feedback screen can generally be used for the speed measurement equipment in the park, the all-in-one Thunder Vision + speed sign, the radar speed measurement early warning system for curves and intersections, etc. The focus of the three speed measurement devices is different. The radar speed measurement feedback screen only provides the basic speed measurement reminder function. On the basis of this function, the radar speed measurement warning system for curves and intersections has carried out more Function extension.
The specific differences and applications of the three are as follows:
Millimeter wave radar sensor speed measurement feedback screen
The radar speed measurement feedback screen mainly detects the real-time speed of the vehicle by the radar, and the LED panel displays the real-time speed value of the vehicle. When a vehicle appears within the radar detection range, the radar feeds back the vehicle's speed measurement to the vehicle LED panel. The speed value displayed by the LED board can be set to red, green, flashing or always on, reminding the park driver of the current speed status in different colors and forms, so as to achieve the purpose of speed limit and collision avoidance.
Raivision all-in-one machine + speed warning sign
The combination of Raivision and speed signs will be the respective detection advantages of radar and video. The detection data is deeply integrated and applied to the classification and detection of motor vehicles, non-motor vehicles, pedestrians and other targets. It is related to the broadcast of speed sign information to realize real-time detection and real-time release. remind. Among them, the speed mark degree mark has no speed measurement function, and the speed measurement data is provided by the mine body machine linkage. With the help of Raivision all-in-one machine and speed signs, functions such as license plate, logo, body color, radar speed measurement, speed information display equivalent, and speed information display are completed. At the same time, it can provide more specific and standardized structured data for traditional video surveillance applications, quickly find relevant video and image data, and solve the problem of workers slowly finding a large number of videos.
Curve and intersection radar speed detection warning system
In addition to the basic vehicle speed measurement reminder function, the millimeter-wave radar sensor speed measurement early warning system for curves and intersections can also realize the purpose of road linkage early warning in the scenes of curves and intersections in the park. Taking the park curve as an example, when the radar detects the arrival, the speed display of the early warning system displays the real-time speed, reminding the driver to pay attention to the speed; at the same time, it is linked to the opposite warning system to detect the real-time speed of the opposite vehicle and remind the opposite vehicle ahead, which is effective. Reduce the probability of collision with oncoming motor vehicles.
Among them, the millimeter-wave radar sensor velocity measurement radar plays an important role in three applications. Based on the Doppler effect, the radar transmits electromagnetic waves to irradiate the target vehicle in the detection area, receives echoes, and obtains information such as the distance, distance change rate (radial velocity), direction, and altitude from the target vehicle to the electromagnetic wave emission point, which are related intelligent control warning devices. Provide evidence.
Millimeter-wave radar sensors can integrate LED intelligent control warning devices and video detection technologies, such as display screens, sound and light alarms, etc., to detect all kinds of target vehicles within the detection area of 50m and 80m respectively, and analyze the direction, distance, speed, etc. ; High detection accuracy, strong anti-interference ability, and the detection results are not affected by temperature and climatic conditions; Low-level signal output, low power consumption, high cost performance, and multi-lane detection at the same time; Simple installation and maintenance, no need to interrupt traffic. In addition, it can also perform real-time detection and early warning feedback for pedestrians who are about to enter the intersection according to user needs, which is convenient for the park to remind motor vehicle drivers in the area to avoid it in time.
