A load sensor having a centrally disposed aperture element through which a fastening element of a vehicle air suspension assembly passes to affix the load sensor between the vehicle air suspension assembly and the vehicle suspension, wherein the load sensor has a force measurement sensor disposed proximate an elongate slot to generate a load signal which varies based on an amount of strain in the load sensor, wherein the load signal received by a load calculator allows calculation of the load exerted from the vehicle frame to the vehicle suspension.

In a method for determining an axle load on a mechanically and/or pneumatically/hydraulically suspended vehicle, the axle load is determined with the aid of control and sensor means that are installed in the vehicle and/or functionally enhanced. Functions for axle load determination at mechanically suspended vehicle axles (4) and for axle load determination at pneumatically/hydraulically suspended vehicle axles (2) are available. In a mechanically suspended vehicle axle (4) a distance measuring unit (9), and in a pneumatically/hydraulically suspended vehicle axle (2) a pressure measuring unit (7) are used to determine the axle load. An initial plausibility check is implemented in an electronic control unit (10) of the level control system (1), on the basis of which the level control system (1) identifies the particular suspension type, mechanical or pneumatic/hydraulic, of a vehicle axle (2, 4) and, thereafter, the appropriate function for axle load determination is activated.

A freight weight estimating apparatus includes a TPMS sensor that measures air pressure of a tire, and a controller that calculates a first tread area of the tire from a first air pressure of the tire measured by the TPMS sensor before loading freight, calculates a second tread area of the tire from a second air pressure of the tire measured by the TPMS sensor after loading the freight, and estimates a weight of the freight loaded in a vehicle based on the first tread area and the second tread area.

A freight weight estimating apparatus includes a TPMS sensor that measures air pressure of a tire, and a controller that calculates a first tread area of the tire from a first air pressure of the tire measured by the TPMS sensor before loading freight, calculates a second tread area of the tire from a second air pressure of the tire measured by the TPMS sensor after loading the freight, and estimates a weight of the freight loaded in a vehicle based on the first tread area and the second tread area.

A heavy goods vehicle includes a displacement calculator that calculates a displacement by multiplying an arc length per unit rotation angle of the outer circumference of a specified tire by the first physical quantity, a vehicle position estimator that estimates a vehicle position using the displacement, and a memory that stores a correlation between a second physical quantity corresponding to a loading weight and an arc length per predetermined rotation angle at the outer circumference of the specified tire. The displacement calculator refers to the correlation to calculate a current arc length per unit rotation angle at the outer circumference of the specified tire from the second physical quantity corresponding to the loading weight, and calculates the displacement by multiplying the first physical quantity detected by the rotation amount detector by the current arc length per unit rotation angle.

A first processor determines a loaded state of a bucket, makes a determination that a traveling apparatus has performed an operation for shifting from a rearward movement state to a state (forward movement or stop) other than the rearward movement state in the loaded state, and calculates a load weight of the bucket from a detection value of a work implement sensor (first hydraulic pressure detectors and a first angle detector) based on the determination.

A first processor determines a loaded state of a bucket, makes a determination that a traveling apparatus has performed an operation for shifting from a rearward movement state to a state (forward movement or stop) other than the rearward movement state in the loaded state, and calculates a load weight of the bucket from a detection value of a work implement sensor (first hydraulic pressure detectors and a first angle detector) based on the determination.

A vehicle includes a sprung mass including a cabin coupled to a chassis, tractive assemblies each including at least one tractive element, springs coupling the tractive elements to the sprung mass, each spring imparting an upward force on the sprung mass, load sensors each configured to provide a signal indicative of the force imparted by one of the springs, and a controller operatively coupled to the load sensors. The controller is configured to determine a weight of the sprung mass using the signals from the load sensors and monitor at least one operational condition of the vehicle. The controller is configured to determine whether or not to disable determination of the weight based on the at least one operational condition.

A vehicle includes a sprung mass including a cabin coupled to a chassis, tractive assemblies each including at least one tractive element, springs coupling the tractive elements to the sprung mass, each spring imparting an upward force on the sprung mass, load sensors each configured to provide a signal indicative of the force imparted by one of the springs, and a controller operatively coupled to the load sensors. The controller is configured to determine a weight of the sprung mass using the signals from the load sensors and monitor at least one operational condition of the vehicle. The controller is configured to determine whether or not to disable determination of the weight based on the at least one operational condition.

In a work machine, a load information output part outputs a load calculated by a load calculation part as load information before a piston member shifting toward a stroke end reaches a specific position, and a load storage part stores the load calculated by the load calculation part as a specific load when the piston member shifting toward the stroke end reaches the specific position. The load information output part further outputs the specific load as the load information after the piston member shifting toward the stroke end enters a specific region.