Patent classifications
G01G3/1404
LOAD CELL FOR A SCALE
The invention relates to a load cell for a scale having a monolithically configured measurement body that has a force reception section, a force introduction section, and a joint section arranged between the force reception section and the force introduction section, wherein the measurement body has a longitudinal axis and an axial end at the force reception side and an axial end at the force introduction side; having at least one strain gauge arranged at the upper side on the joint section for detecting a stretching deformation of the measurement body; and having a circuit board that is electrically connected to the at least one strain gauge, that is arranged at the force reception side, and that has electronics arranged thereon for processing at least one output signal of the at least one strain gauge.
Weighing device and method with off-center indication
Electronic scale including four feet, four strain gauges, an electronic control unit and a display, where the gauges are combined in pairs in first and second Wheatstone bridge type circuits, where a first intermediate-point of the bridge is selectively connected via a switch to an intermediate voltage source and where the first and second outputs of the amplifiers are summed by the electronic control unit in order to deduce therefrom a weight for an object present on the device, with indication for the user of off-center condition on the scale. Weighing method implemented in such a scale.
LOAD CELL, WEIGHING NETWORK AND MONITORING METHOD
A load cell has four resistive strain gauges, a digital-to-analog conversion circuit and a signal processor. The signal processor can output a real-time load stress value F.sub.n and a real-time state information matrix S.sub.t. A weighing network is made of a load cell array composed of a plurality of the load cells, a collection device for collecting external information, and a control terminal. Further proposed in the present invention is a monitoring method for a weighing network, applied to the aforementioned weighing network, wherein the control terminal collects real-time external information, and a real-time load stress value F.sub.n and a real-time state information matrix S.sub.t for each load cell in real time; and compares the real-time external information, and the real-time load stress value F.sub.n and the real-time state information matrix S.sub.t for each load cell with data stored in a weighing process database to monitor the state of the weighing network.