A weigh module (10) for a belt conveyor apparatus is disclosed. Said module (10) comprises a support means, in the form of a plurality of shafts (30) to support a conveyor belt. The module also includes a means to measure rotation of the shaft, which means is preferably a rotary encoder. The shafts are support on elongate supports. In order to determine the mass of material on a conveyor belt, the module includes a load cell engaging a load plate to determine the load on a belt. The shafts are generally cylindrical and can have a plurality of spaced apart rings along the outer surface to engage a conveyor belt.

Weighing system (FIG. 3, FIG. 6) to weigh items, parcels and the like, while they are moving, for example, on a conveyor. A servo amplifier (14) and servo controller (20) are arranged to drive a servo motor in a feedback (15) configuration, and acquire torque sensing signals (17) responsive to commanded acceleration of the conveyor while the item(s) are on board. Preferably, constant acceleration of the item(s) is realized during one or more measurement intervals, and mass is derived by a processor (30) based on the measurement data (FIG. 5). Other embodiments are described for weighing granular and slurry materials (FIG. 7) and for weighing multiple, potentially overlapping parcels in motion (FIG. 8).

Weighing system (FIG. 3, FIG. 6) to weigh items, parcels and the like, while they are moving, for example, on a conveyor. A servo amplifier (14) and servo controller (20) are arranged to drive a servo motor in a feedback (15) configuration, and acquire torque sensing signals (17) responsive to commanded acceleration of the conveyor while the item(s) are on board. Preferably, constant acceleration of the item(s) is realized during one or more measurement intervals, and mass is derived by a processor (30) based on the measurement data (FIG. 5). Other embodiments are described for weighing granular and slurry materials (FIG. 7) and for weighing multiple, potentially overlapping parcels in motion (FIG. 8).

Weighing system (FIG. 3, FIG. 6) to weigh items, parcels and the like while they are moving, for example, on a conveyor. A servo amplifier (14) and servo controller (20) are arranged to drive a servo motor in a feedback (15) configuration, and acquire torque sensing signals (17) responsive to commanded acceleration of the conveyor while the item(s) are on board. Preferably, constant acceleration of the item(s) is realized during one or more measurement intervals, and mass is derived by a processor (30) based on the measurement data (FIG. 5). Other embodiments are described for weighing granular and slurry materials (FIG. 7) and for weighing multiple, potentially overlapping, parcels in motion (FIG. 8).

A seed metering and discharge system that generates and discharges a continuous stream of seed for downstream processing. A variable position gate is disposed at an output end of a bottom hopper of the system. During a measurement period, a commanded position of the variable position gate is adjusted in proportion to mass measurement signals received from load cells mounted to the bottom hopper. A top hopper refills the bottom hopper during a refill period when the variable position gate is commanded into a fixed position. The system regulates the continuous stream of seed, measured in real-time, so that the actual seed flow rate at the output end closely matches a target seed flow rate. The system operates iteratively between the measurement and refill periods during continuous discharge cycles.

Disclosed is a monitoring system for a conveyor belt weighing system, the monitoring system comprising: a status page displaying a plurality of calibration status displays for the conveyor belt weighting system, each of the calibration status displays including a reference calibration value and a comparison between the reference calibration value and a calibration value for the conveyor belt weighing system, wherein the reference calibration value is an ideal value for the calibration value.