A WIM system for detecting loads of vehicles on a roadway segment when a crossing wheel of a vehicle crosses a WIM sensor includes a WIM sensor arranged in the roadway segment and having a section that is flush with the roadway surface. The WIM sensor includes an elongated profile extending along a longitudinal axis and defining at least one space in which is arranged at least one force sensor, which is configured to generate a force sensor signal that corresponds to a dynamic ground reaction force to the crossing wheel. The WIM system includes at least one acceleration sensor that detects an acceleration of the road surface of the roadway segment in which the WIM sensor is arranged in at least one spatial direction and that accordingly provides an acceleration sensor signal indicative of the deflection of the roadway segment along the one spatial direction.

An apparatus for calibrating a weigh-in-motion (WIM) sensor embedded in a roadway includes an actuator, an applicator, a force sensor disposed between the actuator and the applicator, and a carriage supporting the actuator, the applicator and the force sensor, which carriage is selectively movable on a longitudinal support carried by a frame. The apparatus also includes a drive unit to move the applicator along the longitudinal support as well as a position sensor that detects a position of the calibration path relative to the WIM sensor. According to a method for calibrating a WIM sensor, the frame is positioned to straddle the WIM sensor. The applicator introduces along the calibration path at a succession of different positions, a reference force that is measured by the WIM sensor and the force sensor, and these measurements are compared to generate a calibration.

A load transfer mechanism includes an elongated beam and a sensing package. The beam includes a plate with a load-bearing surface, a tube portion, and a neck. The tube portion includes a base wall and a cover and defines a cavity between the base wall and the cover. The base wall laterally extends from a first edge to a second edge that is opposite the first edge. The cover is joined to the base wall at or proximate to the first and second edges. The neck extends between and joins the plate to the cover of the tube portion. The sensing package is disposed within the cavity of the beam and is under pre-load in engagement with the cover and the base wall. The sensing package is configured to measure forces exerted on the load-bearing surface of the plate.

Provided is a wheel load estimation device configured to acquire wheel speed information of each wheel included in a vehicle from a wheel speed sensor provided in the vehicle; to calculate a front-rear load ratio and a left-right load ratio based on the wheel speed information; and to calculate a wheel load ratio expressing a relative wheel load between the wheels included in the vehicle, with respect to at least one wheel of the vehicle, based on the front-rear load ratio and the left-right load ratio. The front-rear load ratio is a ratio between a load applied to a front wheel of the vehicle and a load applied to a rear wheel of the vehicle, and the left-right load ratio is a ratio between a load applied to a left wheel of the vehicle and a load applied to a right wheel of the vehicle.

System and apparatus for monitoring a structural element includes a magnetometer capable of being mounted on the structural element, a magnet capable of being mounted on a surface adjacent the structural element so that the magnetometer is positioned within a magnetic field of the magnet; and a computing device capable of being communicatively coupled to the magnetometer, the magnetometer measuring characteristics of the magnetic field of the magnet, the computing device determining deflection of the structural element based on the measured characteristics of the magnetic field and a mathematical relationship between characteristics of the magnetic field and position of the magnetometer in relation to the magnet.

A weight-limiting roadblock device according to the present invention includes a body, wherein the body is provided with a weight detection device, the weight detection device includes a push rod, and the left side of the weight detection device is also provided with an overweight warning device. The overweight warning device includes a railing. The present invention is provided with a putter to detect moving vehicles to avoid the loss of electrical energy caused by the use of sensors. The device also has a roadblock to intercept vehicles that forcibly break through the railings and prevent illegal vehicles from forcibly passing through. The left side of the roadblock is also equipped with an elastic baffle to protect the vehicle being intercepted to prevent safety accidents such as rollover due to interception. This device has accurate measurement, obvious interception effect, and no hidden dangers. It is suitable for many Kind of traffic intersection.

A road damage calculation system of the present invention includes a load detector that detects a load applied to a road from a vehicle on the road, and a server including a hardware processor that calculates road damage from the load obtained by the load detector and accumulates the calculated road damage to calculate accumulated road damage.

A method for mounting a Weigh-In-Motion (WIM) sensor in a roadway that includes a surface layer and a base layer directly adjacent to the surface layer includes making a groove that extends down to the base layer of the roadway. The WIM sensor is inserted into the groove, and then grout is poured into the groove onto the WIM sensor. A WIM sensor for being embedded in a groove beneath the exposed upper surface of a roadway includes a force introduction flange with an upper surface and having a lateral surface connected by an edge to the upper surface so that the lateral surface is disposed at an angle with respect to the upper surface.

A sensor arrangement for installation in a carriageway includes a piezoelectric measuring arrangement disposed in a cavity of a hollow profile and in mechanical contact with the hollow profile. The hollow profile includes an external force introduction surface, which is configured to transmit a weight force onto the piezoelectric measuring arrangement, which outputs electrical signals proportional to a magnitude of the weight force. The sensor arrangement includes a separating element, which is configured to prevent a rolling force acting on the separating element from being transmitted into the hollow profile. The separating element includes at least one distribution opening configured to permit grout to flow through the distribution opening.

A strip scale suitable for use in connection with high speed, in motion weighing applications. The scale has a base, a load cell, a compliant member, and a platform. Also disclosed are load cells for use with the scale, and systems and methods for using the scales.