An automatic filtering method and device includes a step of analyzing an input signal so as to obtain its frequency spectrum; and a step of selecting, on the basis of the frequency spectrum, at least one filter from among a plurality of preset filters and filtering the input signal. The method and device automatically use a suitable filter on the basis of the frequency spectrum and repeat simulation of automatic fine adjustment to ensure a filtering effect against noise.

A weight measurement system includes a load-bearing member, a sensing module, a processor, and a prompting module. The load-bearing member supports an object and is made of an elastic material. The sensing module is electromagnetically coupled with the load-bearing member. The processor is electrically connected to the sensing module. The prompting module is electrically connected to the processor. The sensing module outputs a sensing signal to the processor upon detecting a deformation of the load-bearing member caused by the object. The processor processes the sensing signal and outputs a weight signal to the prompting module.

A weight measurement system includes a load-bearing member, a sensing module, a processor, and a prompting module. The load-bearing member supports an object and is made of an elastic material. The sensing module is electromagnetically coupled with the load-bearing member. The processor is electrically connected to the sensing module. The prompting module is electrically connected to the processor. The sensing module outputs a sensing signal to the processor upon detecting a deformation of the load-bearing member caused by the object. The processor processes the sensing signal and outputs a weight signal to the prompting module.

A system includes modules forming an array. Each module is coupled to a neighboring module and includes flexures. Each flexure is configured to measure a load value of the module. A module board is connected to the flexures, configured to receive the load value and combine into a load module output. The load module output is within an initial module output range. A resistor is configured to set the initial module output range, which is the same for each module in the array. A microcontroller is configured to receive an input for the initial module output range, which is a difference between an output for a full-load state and a zero-load state, and configured to receive the load module output of each module, convert the load module output into a bit number, scale the bit number to generate an adjusted bit number. This represents a weight applied to the array.

A system includes modules forming an array. Each module is coupled to a neighboring module and includes flexures. Each flexure is configured to measure a load value of the module. A module board is connected to the flexures, configured to receive the load value and combine into a load module output. The load module output is within an initial module output range. A resistor is configured to set the initial module output range, which is the same for each module in the array. A microcontroller is configured to receive an input for the initial module output range, which is a difference between an output for a full-load state and a zero-load state, and configured to receive the load module output of each module, convert the load module output into a bit number, scale the bit number to generate an adjusted bit number. This represents a weight applied to the array.

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.

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.

A load cell transducer including one or more strain gauges configured to generate a first signal indicative of a force applied to the load cell transducer and a sensor configured to generate a second signal indicative of an acceleration and an orientation of the load cell transducer. The load cell transducer further includes a controller communicatively coupled to the one or more strain gauges and the sensor. The controller is configured to determine a weight of an object based on the first signal, determine at least one of a static inclination or an acceleration of the load cell transducer based on the second signal, and output a message indicating an issue of the load cell transducer based on at least one of the static inclination and the acceleration.

A load cell transducer including one or more strain gauges configured to generate a first signal indicative of a force applied to the load cell transducer and a sensor configured to generate a second signal indicative of an acceleration and an orientation of the load cell transducer. The load cell transducer further includes a controller communicatively coupled to the one or more strain gauges and the sensor. The controller is configured to determine a weight of an object based on the first signal, determine at least one of a static inclination or an acceleration of the load cell transducer based on the second signal, and output a message indicating an issue of the load cell transducer based on at least one of the static inclination and the acceleration.