Systems and methods for a load sensing system that determines a mass on a bed. The systems generally are in the form of a castor base, particularly one that can be used as part of an adjustable hospital bed. The load sensing system serves to determine the mass of any object or objects (typically a human or animal patient) which is placed on the bed by having the mass create a force on lever arms of a plurality of load cells in the castor base. The load sensing systems are designed to work without hindering the adjustable functionality of the bed and can accurately determine mass (weight) at any position of the bed, and potentially even while the bed is adjusting between positions.

Devices and methods for generating synthetic cardio-respiratory signals from one or more ballistocardiogram (BCG) sensors. A method for determining item specific parameters includes obtaining ballistocardiogram (BCG) data from one or more sensors, where the one or more sensors capture BCG data for one or more subjects in relation to a substrate. For each subject, the captured BCG data is pre-processed to obtain cardio-respiratory BCG data. The cardio-respiratory BCG data is sub-sampled to generate the cardio-respiratory BCG data at a cardio-respiratory sampling rate conducive to cardio-respiratory signal generation. The sub-sampled cardio-respiratory BCG data is cardio-respiratory processed to generate a cardio-respiratory parameter set. A synthetic cardio-respiratory signal is generated from at least the cardio-respiratory parameter set and a cardio-respiratory event morphology template. A condition of the subject is determined based on the synthetic cardio-respiratory signal.

Various methods and systems are provided for a drift-compensated force measurement. In one example, a method includes obtaining a single output voltage measurement from a strain gauge of an infant scale, the single output voltage reflective of a weight applied to the scale; obtaining a voltage measurement across each of four resistors of the strain gauge to determine four separate voltage measurements and determining a drift voltage based on the four separate voltage measurements; and outputting a corrected weight value determined based on a difference between the single output voltage and the drift voltage

The present utility model provides a test bed, a magnetic resonance imaging system, and a medical imaging system. The test bed includes a support frame used to bear a tested object, a base used to support the support frame, and at least one weighing assembly. The at least one weighing assembly is fixed to the base, and acquires weight information of the tested object by sensing stress from the support frame.

A support platform supports a mattress. The support platform includes legs. Force sensors are coupled to the legs or to the support platform. The force sensors are configured to sense a force applied to each leg or support platform. A controller is configured to receive at least one force stream from at least one of the force sensors. The at least one force stream represents a force sensed by the force sensor. The controller is configured to, in responses to receiving the at least one force stream, determine a sleep parameter from the following group of sleep parameters: bed presence, weight, heart rate, respiration rate, and motions. The controller is configured to output at least one or more of those parameters to an end user.

A method of pillow customization includes analyzing shapes associated with people through the use of sensors to create analytical data; receiving photos from a subject user through a first computing device and a server; determining a firmness of a mattress of the subject user based on the photos; determining body measurements of the subject based on the photos through one or more algorithms and a second computing device; providing the subject user with a pillow diagram, the pillow diagram having one or more zones, each of the one or more zones being customizable in firmness; receiving one or more subject user inputted selections through the first computing device; and designing a pillow based on the firmness of the mattress, the body measurements, and the one or more subject user inputted characteristics, the pillow being customized to the subject user.

The present invention relates to a smart diaper changing pad for weighing an infant or toddler and communicating the recorded information wirelessly to a mobile computer. The diaper changing pad incorporates force or mass sensors for measuring weight. The changing and cleaning pad and a separate computing system are wirelessly connected, either directly or through a network capable of both internal and external communication. An application installed on the mobile computer can track measurements from the diaper changing pad and keep a historical record, which may provide peace of mind and insight into a baby's health and development. The key components of the product are a soft pad, a rigid platform, one or more sensors capable of measuring force or weight, a power source, a memory, a processor, and a wireless communication method. The invention can optionally include a display and a number of user inputs such as buttons or switches.

Attributes of a human or animal body are detected by the generation and detection of an electric field. A laminated membrane (202), connected to a control circuit, is placed over an electrically conductive ground-plane (201). An upper-mattress (203) is placed above this for supporting a human or animal body. To improve the response of the detector, a response-enhancement-layer (204) of a substantially electrically non-conducting compressible-material containing electrically-conductive-particles, such as carbon particles, is located between the laminated-membrane (202) and the upper-mattress (203).

A patient support apparatus includes a load frame, a support frame, and a plurality of load cells supporting the load frame on the support frame such that a load supported by the load frame is supported by the load cells, each load cell configured to produce a signal indicative of a load weight bearing upon that load cell. The load cells are calibrated after installation.

There is provided a respiratory waveform drawing system. The system includes load detectors; a center of gravity position calculation unit; an oscillation coordinate setting unit configured to perform: obtaining a first extreme point at which a distance between an initial origin and the position of the center of gravity of the subject is maximized; obtaining a second extreme point which appears at an opposite side of the initial origin from the first extreme point, and at which a distance between the initial origin and the position of the center of gravity of the subject is maximized; setting a direction connecting the first and second extreme points as a direction of a tentative oscillation axis; and setting a midpoint between the first and second extreme points as a tentative oscillation origin; and a waveform drawing unit configured to draw the respiratory waveform.