Description
Direct Sighting Audio Visual monitoring Digital device, with Blind-Spot, and enhanced impact detection system for commercial and fleet vehicle applications
BACKGROUND INFORMATION
With increasing traffic volume follows an increase in the number of over height truck collisions with highway bridges. The detection of collision impact and evaluation of the impact level is a critical issue in the maintenance of a concrete bridge. In this paper, an over height collision detection and evaluation system is developed for concrete bridge girders using piezoelectric transducers.
Electric circuits are routed and designed to detect the impact and to activate a digital camera to take photos of the offending truck. Impact tests and a health monitoring test were conducted on a model concrete bridge girder by using three piezoelectric transducers embedded before casting.
From the experimental data of the impact test, it can be seen that there is a linear relation between the output of sensor energy and the impact energy. The health monitoring results show that the proposed damage index indicates the level of damage inside the model concrete bridge girder.
The proposed over height truck-bridge collision detection and evaluation system has the potential to be applied to the safety monitoring of highway bridges. With regard to impact velocity, as has been found in a study by the National Highway Traffic Safety Administration in the United States, knowledge of the impact velocity is beneficial to increasing the protection of passengers in more than 80% of the crashes of passenger vehicles and commercial trucks.
To reduce the risk of excessive airbag deployment at low impact velocities, a precise differentiation of velocity is required by American law (Federal Motor Vehicle Safety Standards and Regulations–FMVSS 208). The goal of the device according to the present invention is to equip operators with a system to ease discrepancies in route information, and fulfill the above-mentioned possibilities and requirements.
Some Features: Database of heights ( Bureau of Roads & Highways, Railroads) Routes Deliverable online network, Esti-measure Scan, visuals, auto-manual adjusting, visual/audio cues measurable by percent, tach’s digital.