Abstract: A weighing material on a moving platform by compensating for acceleration of the material and a variable slope of the platform. The system includes at least one weighing load cell and a reference load cell. The weighing load cell generates an output signal associated with a force applied to the weighing load cell by the material. The reference load cell is coupled with a reference mass, and provides the data from which a compensation multiplier can be calculated. The compensation multiplier is a value that is used to adjust the output of the weighing load cells to compensate for acceleration and variable slope, thereby generating the actual weight of the material. In order to calculate the compensation multiplier, an zero offset value of the reference load cell is determined prior to taking weight measurements of the material. The weighing systems can be used with substantially any moving vehicle that carries a material.

Abstract: A weighing system for measuring the weight of a material carried on a conveyor assembly. The weighing system is compatible with conveyor assemblies wherein either the pitch angle, the roll angle, or both, is variable. The weighing system includes a load cell that measures a force borne by the support member of the conveyor assembly. One or more clinometers are used to define the angular position of the conveyor assembly. The number of clinometers is great enough to fully define the pitch angle, the roll angle, and the direction through which the measured force acts. The measured angles, the measured force, and a tare weight of the conveyor are used to calculate the weight of the material. The weighing system may be adapted to measure a flow rate of the material. Furthermore, the conveyor assembly may be mounted on harvesting equipment in order to measure crop yield data and to generate maps depicting the crop yield distribution over a field.

Abstract: A weighing system for measuring the weight of a material carried on a conveyor assembly. The weighing system is compatible with conveyor assemblies wherein either the pitch angle, the roll angle, or both, is variable. The weighing system includes a load cell that measures a force borne by the support member of the conveyor assembly. One or more clinometers are used to define the angular position of the conveyor assembly. The number of clinometers is great enough to fully define the pitch angle, the roll angle, and the direction through which the measured force acts. The measured angles, the measured force, and a tare weight of the conveyor are used to calculate the weight of the material. The weighing system may be adapted to measure a flow rate of the material. Furthermore, the conveyor assembly may be mounted on harvesting equipment in order to measure crop yield data and to generate maps depicting the crop yield distribution over a field.

Abstract: A grain measuring and weighing device including an entrance chamber, a constant volume chamber, and a weigh chamber. A plurality of gates controllably move between open and closed positions to allow a known volume of grain to flow between chambers. The weighing and measuring system includes a means for compensating and eliminating forces external to the grain harvester, such as the various forces due to sloping surfaces and rough terrain over which the grain harvester moves, that would otherwise adversely affect the grain yield data. In one embodiment, an accelerometer is use to measure such external forces. In another embodiment, a reference weight is used to measure the external forces.