Real-time vertical wheel impact force measurement method based on tire pressure monitoring

Abstract

The invention discloses a real-time vertical wheel impact force measurement method based on tire pressure monitoring. Integrated equipment with a tire pressure derotation preprocessing module, a tire pressure-wheel force system identifying module, a calibrating and correcting method module and a tire pressure-wheel force measuring module is mainly included. Real-time tire pressure data is collected through the integrated equipment, corresponding vertical wheel impact force is obtained through the derotation preprocessing module and the tire pressure-wheel force system identifying module, and correction can be conduced according to a calibrating method. Accordingly, a wheel force measurement solving scheme which is efficient, accurate and high in adaptability is provided from the theory layer and the equipment layer, the quick assessment requirement on vast bridge health condition is met, and meanwhile the method has the great potential in the fields of road safety diagnosis, vehicle performance design and the like.

Description

technical field [0001] The invention relates to the field of tire performance monitoring, in particular to a real-time measurement method for vertical wheel impact force based on tire pressure monitoring. Background technique [0002] As an integral part of transportation infrastructure, bridges play an important role in social and economic development. Taking the United States as an example, there are more than 600,000 active bridges in the United States, with an average age of more than 40 years, and about 25% of bridges are damaged. In 2007, the collapse of the I-35 bridge in Minneapolis, USA caused $200 million in economic losses. At present, my country is gradually stepping out of the golden period of infrastructure construction. A considerable part of the more than 750,000 active bridges are facing aging problems. The survey shows that the number of Class IV and V bridges in my country exceeds 90,000. In order to ensure the normal development of the social economy, t...

AI Technical Summary

Problems solved by technology

The dynamic weighing system is a mature technology for checking the overweight of vehicles in the expressway network, but it can only obtain the wheel force in a narrow range and in a short period of time, such as the moment when the vehicle passes the bridge head, but cannot obtain the wheel force when the vehicle passes the entire bridge

The wheel six-component force measurement system based on wheel hub strain can obtain the force information of the three directions of the wheel, but strictly speaking, these six-component forces are for the deformation of the wheel hub, which is different from the real contact force between the tire and the ground, so this technology When applied to the assessment of bridge health status, it will inevitably bring errors

In addition, such systems are too complex, provide too much information, and are expensive, so they are not widely used in bridge engineering

Images