A weight measuring device includes a top layer including a plurality of first flats and at least one bi-stable spring band. The plurality of first flats are connected to each other via the at least one bi-stable spring band. The weight measuring device further includes a bottom layer including a plurality second flats connected the plurality of first flats. The weight measuring device further includes at least one force sensor interposed between the top layer and the bottom layer. The weight measuring device further includes a processor configured to determine a weight of an object placed on the top layer or the bottom layer based on signals generated from the at least one force sensor.

A weight measuring device includes a top layer including a plurality of first flats and at least one bi-stable spring band. The plurality of first flats are connected to each other via the at least one bi-stable spring band. The weight measuring device further includes a bottom layer including a plurality second flats connected the plurality of first flats. The weight measuring device further includes at least one force sensor interposed between the top layer and the bottom layer. The weight measuring device further includes a processor configured to determine a weight of an object placed on the top layer or the bottom layer based on signals generated from the at least one force sensor.

A luggage scale and identification tag system is a combination identification tag and luggage weight scale system having a body with a clear plastic card insert for displaying a business card or other visual identification means on one side and a scale with a display face and graduated weight measurements on the other side. The scale has a spring mechanism that is able to indicate a weight when loaded; the indication via mechanical (analog) means. Simplified versions may just be connectable to luggage via a tie strap.

A luggage scale and identification tag system is a combination identification tag and luggage weight scale system having a body with a clear plastic card insert for displaying a business card or other visual identification means on one side and a scale with a display face and graduated weight measurements on the other side. The scale has a spring mechanism that is able to indicate a weight when loaded; the indication via mechanical (analog) means. Simplified versions may just be connectable to luggage via a tie strap.

The present invention relates to a control unit for controlling a chassis system between at least a ground contact point and a frame of a vehicle, the chassis system comprising a leaf spring and a chassis arrangement, said chassis arrangement is adapted to receive a chassis condition input signal and to control a chassis condition of said chassis arrangement in response to said chassis condition input signal, said chassis system further comprising a strain gauge adapted to issue a strain gauge output signal indicative of a strain in said leaf spring, wherein said control unit is adapted to receive said strain gauge output signal and to issue said chassis condition input signal to said chassis arrangement on the basis of said strain gauge output signal. The invention also relates to a method, a chassis system, and a vehicle.

The present invention relates to a control unit for controlling a chassis system between at least a ground contact point and a frame of a vehicle, the chassis system comprising a leaf spring and a chassis arrangement, said chassis arrangement is adapted to receive a chassis condition input signal and to control a chassis condition of said chassis arrangement in response to said chassis condition input signal, said chassis system further comprising a strain gauge adapted to issue a strain gauge output signal indicative of a strain in said leaf spring, wherein said control unit is adapted to receive said strain gauge output signal and to issue said chassis condition input signal to said chassis arrangement on the basis of said strain gauge output signal. The invention also relates to a method, a chassis system, and a vehicle.

A vehicle weight sensing system particularly useful for trailers. An axle tube is mounted to the vehicle or trailer through its suspension members that may be leaf springs. A mounting block is affixed to the axle tube for mounting a strain gauge. The mounting block is fixed to the axle tube between the suspension members connected to the axle tube. The mounting block has a mounting surface opposite to the mating surface and a notch extends from the mating surface toward the mounting surface. The notch terminates between the mating surface and the mounting surface. The notch separates rigidified sections of the mounting block and the rigidified sections straddle the notch. The stain gauge measures strain in the axle and thereby generates a signal proportional to the weight on the trailer. The signal can be used to properly proportion a brake system on the trailer.

A vehicle weight sensing system particularly useful for trailers. An axle tube is mounted to the vehicle or trailer through its suspension members that may be leaf springs. A mounting block is affixed to the axle tube for mounting a strain gauge. The mounting block is fixed to the axle tube between the suspension members connected to the axle tube. The mounting block has a mounting surface opposite to the mating surface and a notch extends from the mating surface toward the mounting surface. The notch terminates between the mating surface and the mounting surface. The notch separates rigidified sections of the mounting block and the rigidified sections straddle the notch. The stain gauge measures strain in the axle and thereby generates a signal proportional to the weight on the trailer. The signal can be used to properly proportion a brake system on the trailer.

A method and system for determining the weight of a load when the load is placed on a chassis supported by a spring suspension. The method comprises measuring a first distance to a position fixed relative the ground by at least one sensor mounted on the chassis; detecting a displacement of the chassis relative to the position based on the first distance and a second distance measured to the position by the at least one sensor; determining the weight of the load on the basis of the chassis displacement; and communicating the determined weight of the load. The system comprises at least one sensor mounted on the chassis for measuring a first distance to a position fixed relative to the ground; a module for detecting a displacement of the chassis relative to the position based on the first distance and a second distance measured to the position by the at least one sensor, the module determining the weight of the load on the basis of the chassis displacement; and a communication module for communicating the determined weight of the load.

A method and system for determining the weight of a load when the load is placed on a chassis supported by a spring suspension. The method comprises measuring a first distance to a position fixed relative the ground by at least one sensor mounted on the chassis; detecting a displacement of the chassis relative to the position based on the first distance and a second distance measured to the position by the at least one sensor; determining the weight of the load on the basis of the chassis displacement; and communicating the determined weight of the load. The system comprises at least one sensor mounted on the chassis for measuring a first distance to a position fixed relative to the ground; a module for detecting a displacement of the chassis relative to the position based on the first distance and a second distance measured to the position by the at least one sensor, the module determining the weight of the load on the basis of the chassis displacement; and a communication module for communicating the determined weight of the load.