Systems and methods are disclosed for moving a tabletop of a workstation based on biometric input associated with a user, the method being performed by a controller that is configured to send control signals to actuators to move the tabletop. One method includes: accessing a user profile associated with a user device; determining parameters for moving the tabletop, based on the user profile, for eliciting desired biometric inputs from the workstation user at one or more times during the movement of the tabletop; and repeating one or more iterations of: moving the tabletop based on the parameters, by sending control signals to the actuators of the tabletop; receiving, into a data storage device, actual biometric inputs from the workstation user; comparing the received actual biometric inputs with the desired biometric inputs; and if the parameters do not elicit the desired biometric inputs, adjusting the parameters.

A height-adjustable desk has a base, having a support, a middle portion of a rear side of the support having a column disposed thereon and being upright, a front side of the column having a plurality of slots, the slots being spaced along the column. The desk has a shelf, having a frame, an upper desk top and a lower desk top, the frame disposed on and moveably surrounding the column, the frame having an insert corresponding to the slots, the insert configured to be inserted into one of the slots, the upper desk top located at the frame, the lower desk top located at the frame lower than the upper desk top.

Method and system allowing more accurate detection and identification of unwanted arcing include novel processing of signal voltage representing recovered power-line current. In one implementation, arc-faults are detected based on numerical analysis where individual cycles of line voltage and current are observed and data collected during each cycle is processed to estimate likelihood of presence of arc-event within each individual cycle based on pre-defined number of arc-events occurring within pre-defined number of contiguous cycles. In another implementation, fast transient current spikes detection can be done by: computing difference values between consecutive line-current samples collected over a cycle, average of differences, and peak-to-peak value of line-current; comparing each difference value to average of difference; comparing each difference value to peak-to-peak value; and, based on calculation of composite of two comparisons, using thresholds to determine if arcing is present within processed cycle.

This disclosure provides an adjustable ergonomic workstation that includes first platform and a second platform that is coupled to and positioned below the first platform, wherein the first platform may be moved between at least a lowered position and a first raised position and wherein the coupling of the second platform to the first platform includes a tilt adjustment assembly wherein the second platform may be adjusted between at least a first angular position and a second angular position relative to the first platform.

A height adjustable desk including a desktop which engages with a pair of base supports by a pair of X-shaped frames and is adjustable between a fully raised position and a fully lowered position. The pair of X-shaped frames each has a first arm and a second arm. The pair of base supports each has a first biasing member which is configured to bias the corresponding second arm upwards to move the desktop towards the fully raised position, and a second biasing member which is configured to bias the corresponding first arm upwards to move the desktop towards the fully raised position. A pair of height adjustment members is provided on an underside of the desktop, each of which includes a handle, a guiding member, a connecting piece connected to the handle via a linkage mechanism and a biasing member.

Sit-stand desk, such as conversion desks, provide a convenient option for desk work by users who desire the option to selectively sit or stand. Often, the vertical distance between a keyboard and monitor differs when in the sitting configuration versus the standing configuration. A sit-stand desk provided herein allows for a user to transition between a sitting configuration and a standing configuration with a single lifting mechanism with a programmable distance variation between the keyboard and monitor. Accordingly, a user may transition between the sitting configuration and the standing configuration without requiring readjustment of the relative distance between the monitor and keyboard.

An apparatus can be configured to position an electronic display. The apparatus can be combined with an existing work surface to provide a multi-position workstation. In some cases, the apparatus includes a mounting portion configured to support an electronic display and a keyboard. The mounting portion may be movable with respect to the work surface between multiple positions, including, for example, a sitting position and a standing position. Methods for positioning an electronic display and a keyboard are also included.

A manual lifting-lowering computer table includes a table board and a keyboard board arranged under the table board. Sliding seats are arranged on both sides of a bottom surface of the table board, a group of bases parallel to the sliding seat are arranged under the table board, and a first supporting foot and a second supporting foot are arranged on the bases. A middle part of the first supporting foot and a middle part of the second supporting foot are hinged through a connecting shaft, and one ends of the first supporting foot and the second supporting foot away from the bases are arranged on the sliding seats respectively. The first supporting foot is provided with a supporting telescopic device. An upper end of the supporting telescopic device is hinged on the connecting seat arranged at one end of the sliding seat adjacent to the keyboard board.

Method and system allowing more accurate detection and identification of unwanted arcing include novel processing of signal voltage representing recovered power-line current. In one implementation, arc-faults are detected based on numerical analysis where individual cycles of line voltage and current are observed and data collected during each cycle is processed to estimate likelihood of presence of arc-event within each individual cycle based on pre-defined number of arc-events occurring within pre-defined number of contiguous cycles. In another implementation, fast transient current spikes detection can be done by: computing difference values between consecutive line-current samples collected over a cycle, average of differences, and peak-to-peak value of line-current; comparing each difference value to average of difference; comparing each difference value to peak-to-peak value; and, based on calculation of composite of two comparisons, using thresholds to determine if arcing is present within processed cycle.

A desk has a base that rests on an underlying floor surface, a work surface that is supported by the base, and a seat that is rotatably connected to the base for rotation between a first position, located in a conventional position behind the desk so a person may sit at the desk, and a second position, located to one side of the desk so that a person may instead stand at the desk. The seat is adjustable radially relative to its axis of rotation, vertically up and down relative to the floor surface, and angularly toward its axis of rotation.