Anti-collision scheme of viaduct

一.Background

       With the rapid development of my country's economy, waterway transportation has become increasingly busy, waterway grades have been continuously improved, and ship density and loading height have also increased accordingly. These factors have increased the risk of ships hitting bridges. Many railway bridges were built at an early age and the bridge body is low, which is very prone to ship-bridge collision accidents. When an ultra-high vessel collides with a bridge illegally, the bridge displacement and the shortening of the bridge life may occur, and the bridge displacement will easily lead to vicious accidents such as bridge collapse.

背景

 

二．Method To Realize

      2.1 Method to realize

     Put two rows of radar sensors on each elevated pole or bridge, one row facing down, the other straight ahead, the distance between the radars is 50CM, the radar can detect whether there are obstacles or cars in front of 50 meters away, and can also detect the underside of the viaduct. distance from the vehicle to the viaduct. When the viaduct is in danger from vehicles and ships, it will be reported to the video alarm gateway. The video alarm gateway will upload the alarm information to the LED screen through RS485, and upload the scene pictures and alarm video to the cloud server through Ethernet. The alarm information is passed to the management department.

 

  实现方式

2.2 Schematic diagram of radar installation

           The following figure is a schematic diagram of the radar installation:

雷达安装示意图

      2.3 Anti-collision alarm platform

        Our company has built a cloud platform for anti-collision. The anti-collision platform can receive the alarm information of the equipment, and at the same time, it can be connected to the video of the scene to conduct a remote command of the scene. The platform is as follows:

防碰障报警平台

 

三.Product Description

      The video system and LED display system are too mature to be introduced here, only the video alarm gateway and radar sensor will be introduced here.

      3.1 Video Alarm Gateway

  • Product Features

               The main function of this gateway is to combine sensor data with video, superimpose the data connected to the sensor on the gateway to the video of the camera on the gateway, the data of the sensor can be linked with the video, and set the alarm valve for the data of the sensor If the number of sensors reaches the alarm condition, the camera will be linked with the sensor on the same gateway. The gateway will capture a picture and a short video 10 seconds before and 10 seconds after the alarm from the camera, and send it to the designated platform.

 

  • PIC

产品图片

 

  • Product Parameters

 

Project Parameter Remark
Product Function Character overlay function Cameras supporting ONVFI protocol

 
Support Hikvision, Dahua, Uniview and other brands of cameras

 
The transmission is fast, and the configuration is completed in 0.5 seconds

 
When characters are superimposed, the video quality will not be affected

 
Intelligent recognition, automatic color change of characters, docking of the underlying protocol of the camera, and intelligent identification of the light and shade in the painting.

 
The alarm threshold can be set for the sensor. When the sensor reaches the alarm threshold, the alarm video and pictures can be uploaded to the designated server.

 

 

 
Mobile wireless capabilities Support WIFI hotspot function

 
LTE supports three mode options, including domestic, European, American, and domestic support for full Netcom

 
Support Ethernet and 3G/4G/5G uplink and downlink data backhaul, support automatic switching.

 
System functions Support foreign TTN server

 
Support Chinese/English interface switching and local time setting

 
Support remote administrator login, maintenance and repair

 
Support MQTT, support WEB interface management

 
Support button or WEB operation to restore factory settings

 
LTE standard Domestic 4G support frequency band

LTE-TDD : B38/B39/B40/B41   LTE-FDD: B1/B3/B5/B7/B8   TD-SCDMA: B34/B39   UMTS: B1/8   EVDO: 800MHz   CDMA1x: 800MHz   GSM: 850/900/1800/1900

 
4G supported frequency bands in Europe

FDD LTE:B1/B3/B5/B8/B20

TDD LTE:B38/B40/B41

WCDMA:B1/B5/B8

GSM：  B3/B8

 
US 4G supported frequency bands

FDD LTE:B2/B4/B12

WCDMA LTE:B2/B4/B5

 

WIFI

 Support 802.11a/b/g/n protocol, 2.4G frequency band

 
Ethernet Support 10M/100M adaptive network communication

 
Product Specifications Operating temperature

-30℃~65℃

 

Working humidity

5%RH~90%RH

 
Certification

CE/FCC

 

powered by

 DC power supply, voltage is 6V~12V

 

 

 

    3.2 radar ranging sensor

  • Product Features

         This product is a ranging radar using millimeter waves, which has the advantages of high accuracy (millimeter level), long distance, and no influence of light. The product uses the time difference between the electromagnetic wave emitted by the radar and the reflected electromagnetic wave received to calculate the target distance, so the accuracy rate is higher and it is less likely to be missed.

 

  • PIC

            产品图片

 

 3.3 Anti-collision warning platform

        This platform needs to be customized, depending on the needs of the owner.