ES1233307U - Absence control system in bed, cradle or chair, based on the degree of uniformity of the pressure detected (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Absence control system in bed, cradle or chair, based on the degree of uniformity of the pressure detected by an absence detector device (100), characterized in that it comprises at least: - an absence detection device (100), configured to be installed between a mattress or cushion and a bed base or base of a plurality of beds, cribs, chairs or the like, where the absence detection device (100) detects the degree of uniformity of pressure received, comprising: - a male push element (1), with the possibility of sliding inside an existing gap in a female element (2), in such a way that it transfers a pressure by push, directly proportional to the weight that the absence detector device supports. (100), derived from: - the weight of the mattress or cushion, evenly distributed at all points of the absence detection device (100) and/or - of the sum of the weight of the mattress or cushion and the weight of the user, distributed not uniformly in all the points of the absence detection device (100), in the event that the user is on the bed, cot or chair. - a female element (2), capable of receiving a pressure through the male push element (1), directly proportional to the weight of the absence detector device (100), comprising: - at least two suspension elements (4) responsible for supporting the male push element (1) suspended on the suspension elements (4) themselves, - at least two load cells (3) jointly connected to the inner base of the female element (2), configured to convert the pressure received through the male push element (1), into electrical voltage levels proportional to the received pressure in each of the load cells (3) independently, - an interconnection point (7) configured to allow connection to a control unit (200), - a control unit (200), configured to receive at least two variable electrical voltage signals from the absence detector device (100), coming from at least two internal load cells (3) in the absence detector device itself (100) and determine, based on the degree of uniformity of the pressure detected by the absence detector device (100), the time that the user is resting on the bed, cot or chair, where the absence detector device is installed (100) and the time that the user is not supported, where the control unit (200) comprises: - a comparator circuit (10), which receives the electrical voltages from the load cells (3) to compare the electrical voltage from each load cell (3) with the electrical voltage from the remaining load cells (3), where the comparator circuit (10): - it activates its output when all the load cells (3) have a similar electrical voltage, meaning that they receive a uniform and identical pressure in each one of them, determining that the user has stopped exerting support pressure on the bed, cradle or chair, in which the absence detection device (100) is installed, - it deactivates its output when all the load cells (3) do not have a similar electrical voltage, meaning that they receive a non-uniform pressure in each one of them, determining that the user is exerting support pressure in the bed, crib or chair, in which the absence detector device (100) is installed, - a multiple alert control and actuation circuit (15), which when the comparator circuit (10) activates its output and the preset time has elapsed in a memory control circuit (12), activates at least one acoustic indicator (17), an alerting transceiver activating transmitter (18), a telecare assistance activating transmitter (19), a WPAN and/or WLAN communication circuit (20) or an output circuit for a telephone warning device (21), - a courtesy lighting actuation circuit (14), which activates the courtesy lighting lamp (16), when the comparator circuit (10) activates its output, - at least one power supply and one rechargeable buffer battery, to electrically power these circuits, - a wraparound, electrically insulating housing that externally incorporates the courtesy lighting lamp (16) and internally contains at least all these circuits, - an individual alert transceiver (300), configured to: - externalizing acoustic or visual signals from signals received wirelessly from the control unit (200), - wirelessly transmit the alarm override to the control unit (200). (Machine-translation by Google Translate, not legally binding)