A platform is supported at four corners by four half-bridge load cells. Adjacent load cells are oppositely polarized. During operation, analog output from a pair of oppositely polarized half-bridge load cells is provided to an instrument amplifier. Analog output from the instrument amplifier is provided to an analog to digital converter to provide digital data. The digital data is then used to determine weight data indicative of a weight as measured by the pair of half-bridge load cells at that time. A set of switching elements, such as a quad bilateral switch controlled by a microcontroller, rapidly switch between pairs of oppositely polarized load cells. The weight data may be used to determine an overall weight change on the platform, such as a pick or a place of an item. Weight data from the four pairs of load cells may be used to determine a change in center of gravity.

The present invention discloses a weight-bearing measurement device and method and weight-bearing equipment. The weight-bearing measurement device comprises a weight sensor, an acceleration sensor and a processing unit, wherein the weight sensor comprises a deformable body and a bridge circuit, the deformable body deforms under the action of gravity of a borne object, the bridge circuit comprises at least one resistance strain gauge disposed on the deformable body and is configured to generate an output voltage that represents the deformation under the action of an input voltage; the acceleration sensor is configured to generate acceleration components in three directions perpendicular to one another respectively under the action of gravity of the borne object; and the processing unit is configured to calculate the gravity and/or the mass of the borne object in accordance with the acceleration components in the three directions, the input voltage, the output voltage, and conversion coefficients of the bridge circuit in the three directions.

The present invention discloses a weight-bearing measurement device and method and weight-bearing equipment. The weight-bearing measurement device comprises a weight sensor, an acceleration sensor and a processing unit, wherein the weight sensor comprises a deformable body and a bridge circuit, the deformable body deforms under the action of gravity of a borne object, the bridge circuit comprises at least one resistance strain gauge disposed on the deformable body and is configured to generate an output voltage that represents the deformation under the action of an input voltage; the acceleration sensor is configured to generate acceleration components in three directions perpendicular to one another respectively under the action of gravity of the borne object; and the processing unit is configured to calculate the gravity and/or the mass of the borne object in accordance with the acceleration components in the three directions, the input voltage, the output voltage, and conversion coefficients of the bridge circuit in the three directions.

A load cell that includes a beam extending from a fixed section to a load section including a deflection section that moves under a load and a central beam section spaced from the deflection section. At least one strain gauge is coupled to the beam for detecting movement of the beam. A stop element including a bearing surface is also provided and coupled to the beam and configured such that the bearing surface does not engage the beam in a first position and engages the beam in a second position.

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.

A load cell that includes a beam extending from a fixed section to a load section including a deflection section that moves under a load and a central beam section spaced from the deflection section. At least one strain gauge is coupled to the beam for detecting movement of the beam. A stop element including a bearing surface is also provided and coupled to the beam and configured such that the bearing surface does not engage the beam in a first position and engages the beam in a second position.

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 beverage coaster includes integrated electronics, such as a power system, a load cell, an analog to digital converter and a wireless transceiver. The beverage coaster communicates with a computing device to send information, such as a first weight, a second weight, and a third weight of objects placed on the beverage coaster. The first weight may be associated with a container, a second weight may be associated with a first ingredient, and the third weight may be associated with a second ingredient. The computing device is configured to display information related to the first, second, and third weights and provide instructions to a user thereof for maintaining proper proportions of the first and second ingredients as the user adds them to the container.

A beverage coaster includes integrated electronics, such as a power system, a load cell, an analog to digital converter and a wireless transceiver. The beverage coaster communicates with a computing device to send information, such as a first weight, a second weight, and a third weight of objects placed on the beverage coaster. The first weight may be associated with a container, a second weight may be associated with a first ingredient, and the third weight may be associated with a second ingredient. The computing device is configured to display information related to the first, second, and third weights and provide instructions to a user thereof for maintaining proper proportions of the first and second ingredients as the user adds them to the container.

A two-wheeled vehicle that can be used for personal transportation is described. In some embodiments, the vehicle includes first and second wheels that define a common longitudinal axis of rotation, a rigid platform extending along the common longitudinal axis between the first and second wheels that defines a left foot portion and a right foot portion, a first strain sensor affixed to the rigid platform, and a control system configured to output a steering control signal based on a sensor signal received from the first strain sensor.