A digital load cell includes: a strain bridge including a Wheatstone bridge formed by connecting four resistive strain gauges and a temperature sensing resistance element connected in series to the Wheatstone bridge. An analog-to-digital conversion circuit excites the strain bridge, and includes a plurality of input channels and an output terminal. The input channels receive feedback signals from the strain bridge, and the output terminal outputs the feedback signals after analog-to-digital conversion. A signal processor includes a load force calculation unit and a state information matrix calculation unit. The load force calculation unit calculates a differential voltage and a compensation function based on the feedback signals obtained from the output terminal, and calculates a load force value based on the differential voltage and the compensation function. The digital load cell and related weighing system; can provide comprehensive and effective real-time health state monitoring for the digital load cell.

The invention relates to a load cell for a scale, comprising a measuring device for producing a temperature-dependent weight measurement signal corresponding to an acting weight and at least one temperature sensor for measuring a temperature of the load cell, wherein a temperature-compensated weight can be calculated by means of an evaluating unit from the produced weight measurement signal and the measured temperature. The temperature sensor is designed as a sensor, in particular a thermocouple, that measures a temperature difference between a first point, in particular a measurement point, of the load cell and a second point, in particular a comparison point, of the load cell.

The invention relates to measuring technology, and more particularly to weighing devices, and can be used for determining gross vehicle weight, load weight and the load on a vehicle axle. The method includes receiving a first electrical output signal from a strain gauge that is mounted on an axle of a vehicle and measures the tensile and compressive strain on the axle along the longitudinal axis thereof, receiving a second electrical output signal from a strain gauge that is mounted on the axle of the vehicle and measures the tensile and compressive strain on the axle along the transverse axis thereof, and calculating the value of the load on the axle of the vehicle on the basis of the difference between said first and second electrical output signals. The technical result consists in minimizing the effect of fluctuations in the ambient temperature on the readings of a strain gauge mounted on the axle of a vehicle.

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.

Scales for use with cooking appliances such as pressure cookers, and associated systems and methods, are disclosed herein. In several implementations, a scale includes load cells configured to detect a weight of a cooking appliance placed on the scale and any food therein. The scale can further include temperature sensors positioned proximate to corresponding ones of the load cells and configured to detect the temperature proximate to each of the load cells. A processor within or external to the scale is communicatively coupled to the load cells and the temperature sensors, and is configured to determine the weight of the cooking appliance and food based at least in part on the detected weights and the detected temperatures.

A digital load cell includes: a strain bridge including a Wheatstone bridge formed by connecting four resistive strain gauges and a temperature sensing resistance element connected in series to the Wheatstone bridge. An analog-to-digital conversion circuit excites the strain bridge, and includes a plurality of input channels and an output terminal. The input channels receive feedback signals from the strain bridge, and the output terminal outputs the feedback signals after analog-to-digital conversion. A signal processor includes a load force calculation unit and a state information matrix calculation unit. The load force calculation unit calculates a differential voltage and a compensation function based on the feedback signals obtained from the output terminal, and calculates a load force value based on the differential voltage and the compensation function. The digital load cell and related weighing system can provide comprehensive and effective real-time health state monitoring for the digital load cell.