A method for determining the weight of an entity/item to be weighed on a weighing device (1), the weighing device comprising at least a weight sensor and a control unit (4),

the method comprising the following steps:
/a/ collecting weight raw samples (WSi) of the total weight sensed at the weight sensor(s), at a sampling frequency (F0), and converting each of the weight raw samples (WSi) into digitalized weight raw samples (DSi),
/b/ entering sequentially each of the digitalized weight raw samples (DSi) into a Butterworth filter, the latter issuing filtered weight samples (FSi),
/c/ defining a rolling window (RW) containing a parametrized number NS of latest filtered weight samples (FSi),
/d1/ determining, in the rolling window, the minimum (MIN) and maximum (MAX) values of filtered weight samples,
/d2/ comparing the value of MAX−MIN with regard to a parametrized Threshold (T),
/e/ if MAX−MIN is greater than Threshold (T), repeat steps/a/ to /d2/, and as soon as MAX−MIN is less than Threshold (T), output a final weight value (DV), obtained from one or more of the most recent filtered weight samples.

A method for adjusting parameters of a device with a weighing sensor collecting environmental parameter data of an environment where the device is currently located or environmental parameter data during execution of an application by the device. A zero compensation parameter is calculated and updated, based on the data collected. The method is applicable to a moisture analyzer and also to a vehicle scale. In the moisture analyzer, the method is triggered and executed in the analyzer, correcting the zero compensation data by using the environmental parameter data of an environment or environmental parameter data during execution of an application by the analyzer. Dynamic and real-time adjustment of a compensation parameter overcomes the problem that the scheme of pre-setting fixed parameters for zero compensation cannot deal with the complex zero drift encountered in actual environments.

According to an aspect of the inventive concept, there is provided an apparatus for processing an output signal of an analog-digital converter, includes: a first frequency conversion unit for converting a frequency of the output signal of the analog-digital converter so that a band where spurious components exist moves to a band where direct current components exist in the output signal of the analog-digital converter; a spurious component blocking unit for eliminating, from an output signal of the first frequency conversion unit, spurious components which have moved to the band where direct current components exist; and a second frequency conversion unit for restoring a frequency of an output signal of the spurious component blocking unit to the original frequency of the output signal of the analog-digital converter.

Noise that is present in the output of a weight sensor can lead to erroneous weight data. A moveable device, such as a tote, may be used by a customer while shopping in a facility. This tote can include one or more weight sensors that are used to determine the weight of items added to or removed from the tote. However, noise can affect the output of the weight sensors, where such noise is attributed to movement or vibration of the tote. Data from a vibration sensor or a motion sensor coupled to the tote can be analyzed to determine noise that is common to weight data and vibration data or motion data associated with the tote. This common noise can then be removed or attenuated from the weight signals to determine de-noised and valid weight data for the tote.

An electrical circuit includes an SG full bridge circuit, a first resistor series connection connected between the terminals of an energy supply gate of the SG full bridge circuit and having a first tap between two resistors, and a second resistor series connection connected between the terminals of a signal gate of the SG full bridge circuit and having a second tap between two resistors.

The present invention relates to a filtration system comprising a cabinet, a filtration device having a filtrate or retentate vessel arranged outside the cabinet, and a weighing device that is configured to weigh the filtrate or retentate vessel. The weighing device can be arranged inside an enclosure and the enclosure can be arranged inside the cabinet.

A weighing apparatus includes a load cell assembly with an elongated load cell body including a first three dimensional coordinate orientation defined by a first X-axis, a first Y-axis and a first Z-axis. An accelerometer unit is operatively connected to the elongated load cell body and having a second three-dimensional coordinate orientation defined by a second X-axis, a second Y-axis and a second Z-axis. A memory unit is mounted on the elongated load cell body, the memory unit storing data for aligning the second three-dimensional coordinate orientation of the accelerometer unit with the first three-dimensional coordinate orientation of the elongated load cell body.

A weighing apparatus includes a load cell assembly with an elongated load cell body including a first three dimensional coordinate orientation defined by a first X-axis, a first Y-axis and a first Z-axis. An accelerometer unit is operatively connected to the elongated load cell body and having a second three-dimensional coordinate orientation defined by a second X-axis, a second Y-axis and a second Z-axis. A memory unit is mounted on the elongated load cell body, the memory unit storing data for aligning the second three-dimensional coordinate orientation of the accelerometer unit with the first three-dimensional coordinate orientation of the elongated load cell body.

A method for adjusting parameters of a device with a weighing sensor collecting environmental parameter data of an environment where the device is currently located or environmental parameter data during execution of an application by the device. A zero compensation parameter is calculated and updated, based on the data collected. The method is applicable to a moisture analyzer and also to a vehicle scale. In the moisture analyzer, the method is triggered and executed in the analyzer, correcting the zero compensation data by using the environmental parameter data of an environment or environmental parameter data during execution of an application by the analyzer. Dynamic and real-time adjustment of a compensation parameter overcomes the problem that the scheme of pre-setting fixed parameters for zero compensation cannot deal with the complex zero drift encountered in actual environments.

Described are systems and techniques configured to compensate for noise in output of weight sensors which may determine the weight of an item. In one implementation, a mobile cart may be configured with a first weight sensor and a second weight sensor. A noise component and a signal component in the output of the first and second weight sensors are determined. The signal component may be processed to determine the weight of the item.