WO2005074754A1 - Capteur de posture - Google Patents

Capteur de posture Download PDF

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Publication number
WO2005074754A1
WO2005074754A1 PCT/GB2005/000352 GB2005000352W WO2005074754A1 WO 2005074754 A1 WO2005074754 A1 WO 2005074754A1 GB 2005000352 W GB2005000352 W GB 2005000352W WO 2005074754 A1 WO2005074754 A1 WO 2005074754A1
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WO
WIPO (PCT)
Prior art keywords
data
occupant
posture
input
sensing apparatus
Prior art date
Application number
PCT/GB2005/000352
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English (en)
Inventor
John Burkitt
Original Assignee
Eleksen Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eleksen Limited filed Critical Eleksen Limited
Publication of WO2005074754A1 publication Critical patent/WO2005074754A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs

Definitions

  • the present invention relates to monitoring mechanical interactions, in particular to monitoring mechanical interaction between an occupant of a seat and the seat in order to assess the posture of the occupant.
  • the leading elements of a sitting pattern are the ergonomic values of different postures adopted over a particular period of observation, how long each posture is maintained and the frequency and duration of rest periods from occupancy. It is to be appreciated that whilst some postures are considered to offer unsatisfactory ergonomic value when first adopted, other postures are considered to offer satisfactory ergonomic value when first adopted but that value diminishes over time. Thus, in some cases, a posture that is considered to be satisfactory at one time can become unsatisfactory if maintained for too long. Ideally, an occupant posture sensing system would provide a clear indication as to whether a postural condition is satisfactory or unsatisfactory, taking into account posture adopted, the time the posture has been maintained and the time since the last break from occupancy. However, available systems that may be used to monitor posture, for example pressure measurement systems, are arranged to provide an overly detailed output and are also prohibitively expensive.
  • posture sensing apparatus comprising: a position detector for use with a seat, a data processing device configured to receive input data derived from said position detector representative of the position of a mechanical interaction with the position detector, and having access to reference data, and a feedback device configured to receive an input from said data processing device; said data processing device configured to compare input data with reference data to identify an unsatisfactory postural condition and to supply an input to said feedback device in response.
  • an unsatisfactory postural condition is identified on identification of one of: a posture of low initial ergonomic value, a posture of high initial ergonomic value maintained for a predetermined period, a period of occupancy maintained for a predetermined period.
  • said data processing device is configured to receive input data derived from said position detector representative of the magnitude of pressure of a mechanical interaction with the position detector.
  • the feedback device is configured to generate a visual alert, an audio alert, a tactile alert and/or an input to a motor.
  • Figure 1 shows an individual sitting in a chair having an occupant sensing area
  • Figure 2 shows a position detector
  • Figure 3 shows the scenario of Figure 1 after an elapsed period
  • Figure 4 shows a visual representation of characteristics of a mechanical interaction
  • Figures 5 and 6 show visual representations of data derived from a
  • Figure 7 shows a flow chart of method steps for a posture sensing
  • Figure 8 shows a step in the flow chart of Figure 7 in further detail
  • Figure 9 shows a visual display of data derived from mechanical interactions plotted on a map
  • Figure 10 illustrates a feature of an application supporting a visual display of data derived from mechanical interactions plotted on a map
  • Figure 11 shows a computer generated application window displaying
  • Figure 12 illustrates a feature enabling modification of the map of Figure 9
  • Figure 13 shows a flow chart of method steps for a calibration routine
  • Figure 14 shows a plurality of occupant sensing areas connected to a network
  • Figure 15 illustrates an alternative use of an occupant sensing area
  • Figure 16 shows different arrangements of occupant sensing area
  • Figure 17 shows a portable occupant sensor
  • Figure 18 illustrates use of a posture sensing application to provide an input to a motorised element of equipment.
  • Figure 1 shows a chair 101, which forms part of a workstation along
  • the workstation is available for use by person 106, shown sitting in
  • a posture that is deemed to offer actual or potential health related benefits can be considered as a posture having a high ergonomic value, whilst a posture that is deemed to be actually or potentially detrimental to health can be considered as a posture having a low ergonomic value.
  • a person may sit with a posture offering low ergonomic value, whether from the outset or after a period of time, and thus that person may unknowingly be contributing negatively to a current or potential physical complaint.
  • a desirable feature of an occupant posture sensing system is the provision of feedback to draw attention to postural conditions warranting corrective action.
  • an individual is encouraged to incorporate different postures having a relatively high ergonomic value and frequent intervals from occupancy into their sitting pattern.
  • person 106 is adopting a posture
  • chair 101 is provided with an occupant sensing area and is arranged to detect characteristics of mechanical interactions with the occupant sensing area. As will also be explained in further detail, chair 101 is utilisable in an occupant posture sensing system in which the posture of an occupant of the chair is monitored over an observation period to identify unsatisfactory postural conditions. Chair 101 has an occupant support portion 107 that provides a
  • the occupant support surface 108 for an occupant of the chair.
  • portion 107 is provided with a position detector (not shown) configured to detect mechanical interactions therewith.
  • the position detector provides an occupant sensing area, in Figure 1 the sensing area is the area bound by dotted line 109.
  • Figure 2 shows a position detector suitable for use with a chair in an occupant posture sensing system.
  • a position detector having a flexible and/or fabric construction is utilised, with the latter in particular offering the advantages of being durable and breathable.
  • GB Patent No 2 341 929 describes a suitable detector that is configured to determine the positional co-ordinates of a mechanical interaction within a sensing area, and also to determine an additional property of the mechanical interaction, for example pressure. The contents of GB Patent No 2 341 929 are incorporated herein by reference.
  • a position detector may be utilised that is configured to determine X-axis and Y- axis co-ordinates of a mechanical interaction within a sensing area only, or that is also configured to determine an extent of mechanical interaction in the Z-axis.
  • Position detector 201 has two electrically conducting fabric planes,
  • the conducting planes are separated from each other, and thereby electrically insulated from each other, by means of a mesh 204 fabricated from insulating material.
  • a mesh 204 fabricated from insulating material.
  • the two conducting planes are brought together, through the mesh 204, thereby creating a position at which electrical current may conduct between planes 202 and 203. It is then possible to identify the occurrence and position of a mechanical interaction with the detector 201.
  • a voltage is applied across terminals 207 and 208, a voltage gradient appears over plane 202.
  • plane 203 is brought into electrical contact with plane 202 and the actual voltage applied to plane 203 will depend upon the position of the interaction.
  • a voltage is applied between connectors 211 and 212, a voltage gradient will appear across plane 203 and mechanical
  • Connectors 207, 208, 211 and 212 are
  • control circuit 221 which is configured to apply voltage
  • Control circuit 221 includes a micro-controller having read-only and
  • Control circuit 221 identifies electrical
  • characteristics of the sensor 201, and hence mechanical interactions with the sensor, and in response data relating to the characteristics of the environment is supplied to a data processing device, such as a portable computer 231 , via a serial interface 232.
  • Control circuit 221 is configurable to supply data relating to the position of a mechanical interaction (XY data) and/or the extent of a mechanical interaction (Z data).
  • Data may be supplied to a data processing device, by one or more physical connectors, such as wires and cables, or by a wireless transmission link, for example via an infra-red, bluetooth or wi-fi link.
  • Positional XY data derived from a position detector is representative of the centre of applied pressure.
  • positional XY data derived from the detector is representative of the centre of gravity of an occupant.
  • Extent Z data derived from a position detector is representative of the extent of pressure.
  • extent Z data derived from the detector is representative of the pressure applied by an occupant.
  • Figure 3 shows the scenario of Figure 1, following an elapsed period.
  • reference data By observing sitting individuals it is possible to derive empirically or otherwise to derive reference data outlining a boundary between an occupant posture offering satisfactory initial ergonomic value and an occupant posture offering unsatisfactory initial ergonomic value. This reference data is then utilisable in providing feedback that is indicative of whether the benefit of a postural condition is considered to be positive or
  • An alert may comprise a visual and/or audio and/or tactile alert.
  • the alert may originate from an integrated or separate feedback device located on or within chair 101, desk 102, computer 103, monitor 104, keyboard 105 or another location about the occupant of the chair 101 or workstation.
  • computer generated graphics 301 may be displayed on monitor 104
  • an audible beep 302 may be sounded from computer 103
  • a vibration alert 303 may be propagated through chair 101.
  • Figure 4 A visual representation of characteristics of a mechanical interaction with an occupant sensing area is shown in Figure 4.
  • a mechanical interaction is represented as a circle 401 with cross hairs 402 at the centre thereof.
  • the circle 401 is plotted in a Cartesian co-ordinate system with reference to X- axis 403 and Y-axis 404.
  • hairs 402 represent a position of the centre of force of the mechanical
  • Figures 5 and 6 illustrate visually how data derived from a mechanical interaction can be utilised in the determination of satisfactory and unsatisfactory postural conditions.
  • Figure 5 illustrates, by the use of visual mapping, how data relating to the position only of a mechanical interaction position can be utilised to distinguish between satisfactory and unsatisfactory postural conditions.
  • the perimeter 502 of an occupant sensing area 503 is plotted in a Cartesian co-ordinate system with reference to X-axis 504 and Y-axis
  • Boundary line 507 represents a border between data corresponding to a posture that is considered to have a "high” (satisfactory or greater) initial ergonomic value and data corresponding to a posture that is considered to have a "low” (less than satisfactory) initial ergonomic value.
  • boundary line 507 delineates a circle located substantially centrally of occupant sensing area 503.
  • second zone 508 is representative of postures of low initial ergonomic value.
  • boundary line may vary between different applications and according to the sophistication of the data processing utilised.
  • number of different zones defined by boundary lines may also vary between different applications and according to the sophistication of the data processing utilised.
  • sensing area 503 is plotted superimposed onto the map of 501, with a
  • the orientation of the visual map to reflect the orientation of the occupant sensing area being observed, and for the dimensions of the visual map to be to scale of those of the occupant sensing area. If the former is implemented and the orientation of the map of the occupant sensing area 503 is known, the position of the cross
  • hairs 511 relative to boundary line 507 provides an indication as to which way the occupant could move to achieve a posture of high ergonomic value. For example, by identifying X-axis 504 as corresponding to the back of a seat, it
  • the occupant sensing area 503 is towards the front of the occupant sensing
  • the circle 510 around the cross hairs 511 aids visual identification of the position of the centre of gravity of the occupant relative to the first zone 506 of the map 501.
  • a time delay function may require that data that would otherwise lead to identification of an unsatisfactory postural condition be received over a predetermined period before an unsatisfactory postural condition is recognised. It is to be appreciated that an occupant sensing area may extend across all or part of a seat, and that if the occupant sensing area extend across only part of the sitting surface of the seat then the occupant sensing area may not be central to sitting surface. It is considered that the primary practical position to locate an occupant sensing area is where the flesh under the bony protuberances of the pelvis of an occupant will press against the seat.
  • the size of the pelvic bones of different individuals varies relatively insignificantly in adults regardless of the weight of an individual, and that an occupant sensing area of dimensions 270mm by 270mm will be suitable in many practical applications.
  • the optimum position for the occupant sensing area of a seat is dependent upon the physical shape of the seat, taking into consideration whether the seat has a backrest and/or arm rests, and the physical shape of an individual occupant. It is hence to be appreciated that the location and shape of a boundary line within a visual map may also vary depending on the position of the occupant sensing area relative to the physical structure of the seat and the physical characteristics of the occupant.
  • Figure 6 illustrates, by the use of visual mapping, how the input data relating to pressure only of a mechanical interaction can be utilised to distinguish between satisfactory and unsatisfactory postural conditions.
  • the perimeter 602 of an occupant sensing area 563 is plotted
  • boundary line 607 delineates
  • cross hairs 606 are located at the centre of the occupant
  • sensing area 603, and the boundary line 607 is indicative of a magnitude of
  • boundary line 607 is representative of a pressure threshold.
  • input data derived from a mechanical interaction with occupant sensing area 603 is plotted superimposed onto the map of 601, with the mechanical interaction represented as a circle 609 with cross hairs 610 at the centre thereof. It can be seen that the cross hairs 610 are plotted directly onto cross hairs 606 with the circumference of circle 609 falling inside the circumference of circle 607. This data plot is deemed to indicate that the magnitude of pressure applied to the occupant sensing area 603 by the occupant is less than the magnitude of pressure visually indicated by boundary line 607.
  • a pressure threshold may be used to detect whether the occupant sensing area is taking all the body weight of the occupant or whether the occupant is resting their legs and/or arms on an alternative support surface.
  • a pressure threshold may also be used to detect a mechanical interaction that may damage the occupant sensing area.
  • the location and shape of a boundary line between postures of low and high initial ergonomic value within a visual map may vary depending on the position of the occupant sensing area relative to the physical structure of the seat and the physical characteristics of the occupant.
  • a boundary line between postures of low and high initial ergonomic value may be derived from factory settings, in the form of default settings that are optionally adjustable, or from a calibration routine performed for a particular individual occupying a particular seat.
  • the boundary line between postures of low and high initial ergonomic value may vary for different individuals using the
  • Boundary line 613 represents a border
  • map at 612 is similar to map 501.
  • the centre of gravity of an occupant sitting upon an occupant sensing area will vary according to the distance between the back rest and the pelvis of the occupant.
  • input data relating to the pressure exerted on an occupant sensing area may be used to adjust the position of the boundary line 613 in the Y-axis within the
  • Figure 7 shows a flow chart 701, illustrating data processing instructions for a posture sensing application.
  • an input is provided to a feedback device only in response to identification of an unsatisfactory postural condition.
  • an input is provided to the feedback device after each comparison to identify an unsatisfactory postural condition, or in accordance with other rules, and an alert is raised only in response to identification of an unsatisfactory postural condition.
  • a session clock is started, in this example from zero.
  • the session clock increments up a predetermined number of times, either based on real time or times a particular event occurs.
  • the session clock serves to provide notification of the end of a period of observation.
  • reference data is implemented.
  • the reference data outlines a single threshold between data representing postures having a high initial ergonomic value and postures having a low initial ergonomic value.
  • the reference data provides any predetermined or other values utilised at step 705.
  • an occupancy clock is set to zero.
  • the purpose of the occupancy clock will be described in further detail with reference to Figure 8.
  • step 704 input data derived from a mechanical interaction with an occupant sensing area is received.
  • step 705 a comparison is made between the input data received and the reference data implemented at step 702. A question is asked as to whether the result of the data comparison is such that an unsatisfactory postural condition is identified. If the question asked at step 705 is answered in the affirmative, an input is provided to a feedback device at step 706, and then step 707 is entered. If the question asked at step 705 is answered in the negative, step 707 is entered directly. This step is described in further detail with reference to Figure 8. At step 707 a question is then asked as to whether the session clock has incremented to a value less than the maximum value for the present
  • step 708 is entered. If the question asked at step 707 is answered in the negative, this indicates that the present session has expired. At step 708, a question is then asked as to whether new reference
  • a question is asked as to whether the input data received at step 704 indicates a posture of high initial ergonomic value. If
  • step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 802 is entered. If the question asked at step 801 is answered in the affirmative, step 80
  • step 803 a question is asked as to whether the input data received at step 704 indicates a posture of low initial ergonomic value. If the question asked at step 802 is answered in the negative, in this example indicating there the occupant sensing area is not being occupied, step 804 is entered. At step 804, the occupancy clock is set to zero and control returns to step 707. If the question asked at step 802 is answered in the affirmative, control returns to step 706.
  • the occupancy clock increments up a predetermined number of times, either based on real time whilst a posture of high initial ergonomic value is maintained or times a particular event occurs.
  • the occupancy clock serves to provide notification of the end of a period of sitting with a posture of high initial ergonomic value.
  • a question is asked as to whether the occupancy clock
  • step 805 is entered.
  • the occupancy clock is started, and
  • step 806 is entered.
  • a question is asked as to whether the occupancy clock has incremented to a value less than the maximum value for the present occupancy session. If the question asked at step 806 is answered in the affirmative negative, control returns to step 707. If the question asked at step 707 is answered in the negative, this indicates that the maximum period with which the occupant can sit continuously with the input data indicating postures of high initial ergonomic value has been reached or exceeded. Step 807 is then entered, and at this step the occupancy clock is set to zero and control returns to step 706.
  • an input is provided to the feedback device, at step 706, if either a posture of low initial ergonomic value is determined or it is determined that an occupant has been sitting with a posture of high initial ergonomic value over a predetermined period.
  • the latter is implemented since, as previously described, the ergonomic value of a posture can diminish over time and hence the ergonomic value of a posture can deteriorate from a high initial ergonomic value to a low ergonomic value.
  • Figure 9 illustrates a visual display of information gathered from monitoring mechanical interaction between an occupant sensing area and an occupant.
  • the perimeter 902 of an occupant sensing area 903 is displayed.
  • Within the occupant sensing area 903 is visually illustrated a first
  • boundary lines 905 and 907 delineate concentric circles located substantially centrally of the occupant sensing area 903.
  • the first "Green" zone 904 indicates plotted data corresponding to a posture having a greater than satisfactory initial satisfactory ergonomic value.
  • the third "Red” zone 908 indicates plotted data corresponding to a posture having unsatisfactory initial satisfactory ergonomic value.
  • the second "Amber” zone 906 indicates plotted data corresponding to a posture having a satisfactory initial ergonomic value.
  • the last data regarding the actual detected position of the centre of force of the mechanical interaction is represented by an object indicating a point, in this example cross hairs 909. As this data is updated, the position of the
  • cross hairs 909 will correspondingly be updated.
  • rolling average data regarding the actual detected position of the centre of force of the mechanical interaction is represented by an object indicating a region, in this example circle 910.
  • the rolling average data may be derived from the addition together of the last X number of logged readings and dividing by X. According to the requirements of a practical application, either or both of these moving objects may be displayed.
  • An intentional time delay may be introduced between readings from the occupant sensing area of a seat, for example, in order to accommodate available data processing resources or to prevent rapid or extreme movements from triggering an alert routine.
  • the plot at 513 may correspond to a posture that the occupant is adopting in motion and that the occupant would not normally sustain.
  • input data indicating a centre of gravity outside of the calibrated outline may need to be consecutively received a predetermined number of times or over a predetermined period, for an unsatisfactory posture condition leading to an alert to be derived. In this way, unwanted triggering of an alert routine may be avoided.
  • Figure 10 shows the map at 901 of Figure 9. As previously described,
  • a posture may offer high initial ergonomic value but when the posture is maintained over a prolonged period, the ergonomic value may deteriorate over time into an unsatisfactory postural condition.
  • Figure 10 shows a first clock 1001 associated with the first "Green"
  • clocks 1001, 1002, 1003 illustrate that a timer may be used to time how long data has been plotting consecutively in a particular zone. As shown, the clocks 1001, 1002, 1003 each show a different maximum period, with clock
  • a posture of unsatisfactory initial ergonomic value will trigger an input to a feedback device much sooner than identification of a posture of satisfactory initial ergonomic value.
  • data plotting into the third "Red" zone 908 may trigger a feedback device input almost instantly
  • data plotting into the second "Amber” zone 906 may trigger a feedback device input after one hour
  • data plotting into the first "Green" zone 904 may trigger a feedback device input after three hours.
  • a feedback device input trigger may be modified according to previous observation during an observation period. For example, a short period of data plotting into a different zone may be tolerated within a maximum period associated with a particular zone.
  • the visual display at 901 may be presented
  • triggering of a feedback device input is based on the plotting of data object
  • triggering of a feedback device input is based on the plotting of data object 909 only or from a combination of processing the plotting of both data objects 909, 910.
  • triggering of a feedback device input is based on the plotting of data object 910.
  • each of the three zones 904, 906, 908 has an associated time delay between alert conditions, which
  • a first alert routine is performed and after a time limit is exceeded, a second alert routine is performed.
  • a second alert routine is performed.
  • different alert routines may be performed to present alerts of different ability to distract an occupant.
  • a distracting alert serves to make an occupant aware that action is needed to achieve a satisfactory postural condition.
  • data object 910 plots within the first "Green" zone 904.
  • Mo alert routine is being performed and floating application window 1101 may be minimised and represented by an icon on a toolbar 1104.
  • data object 910 plots within the second "Amber" zone 806
  • the first alert may comprise the application window 1101 flashing between different colours. If the application window
  • the first alert may comprise an icon or toolbar in which the icon is displayed flashing between different colours.
  • data object 910 plots within the third "Red" zone 808 and triggers a second alert routine.
  • the second alert may comprise a different or additional type of alert to the first alert.
  • the first alert is a visual alert
  • the second alert may comprise an audio alert or an input to a motor instead of or in addition to a visual alert.
  • zones 904, 906 and 908 respectively are set by reference data stored and referred to by the application supporting the visual display of application window 1101.
  • Input data from the occupant sensing area of a posture sensing seat is received and compared to the reference data to determine whether a threshold has been exceeded and consequently a different zone of the visual display 901 entered.
  • a visual display application may incorporate other types of graphical representation, for example cartoon rendering a figure to show different postures linked to different data plots. For example, if data derived from an occupant sensing area is considered to correspond to a slouching position, a visual representation of this may be displayed along with a suggested posture.
  • a moving image may be displayed, for example showing a transition between two postures, either as part of an alert routine or on request by the occupant.
  • an application window 1201 may feature all
  • adjustable slide toggle display 1202. The adjustable toggle 1203 enables a user to make adjustments, within predetermined limits, to reference data stored and referred to by the application running behind the visual display of application window 1101. As described, the reference data is utilised in determining whether to raise an alert and, if so, which alert to raise. Adjusting the visual position of toggle 1203 along the bar adjustable slide toggle display 1202 in effect adjusts the tolerances between "Green" zone 904, "Amber” zone 906 and "Red" zone 908 as defined by reference data. Tolerance adjustments may be displayed visually by resizing or reshaping of the zone areas. At 1204, toggle 1203 is shown in a position corresponding to a setting of reduced sensitivity to an occupant posture of low initial ergonomic value. As shown, the effect of this is that the area of the "Green" zone 904 has been resized to cover a greater area inside the "Amber" zone 906,
  • toggle 1203 has been moved to effect a setting of
  • the relative areas of more than two zones and the shape of the boundary between zones may be revised.
  • the application window may be provided with a data input box to enable a user to input a specific numeric threshold value or alphanumeric identifier assigned to a graded level of sensitivity of the system. The provision of a feature enabling the sensitivity of the occupant sensing area to be adjusted is useful for accommodating different applications, different occupants of the same seat and different seat surfaces.
  • adjustable settings provide a means for proactively training or rehabilitating an individual to adopt postures of beneficial ergonomic value whilst sitting.
  • an application may be configured to
  • Figure 13 The provision of a calibration routine is useful to users that have specific requirements that are not satisfactorily accommodated for by default factory settings of an occupant sensing area, for example, a user having a physical injury or disability that has specific postural requirements. Thus, for example, an asymmetrical arrangement of occupant sensing area(s) may be utilised in some applications.
  • An alternative use of a calibration routine would be in the proactive training of an individual whereby the routine is used to progressively modify the parameter settings for reference data representing postures of satisfactory and unsatisfactory initial ergonomic values, to control feedback.
  • Figure 13 shows a flow chart 1301 , illustrating steps in a calibration routine. At step 1302, an occupant of the seat on which calibration is being
  • This step may comprise audio and visual instructions provided for example by another individual, an electronic device, a graphical representation on paper or computer generated graphics.
  • occupant 1311 of seat 1312 may be prompted to adopt a sitting position equivalent to a sitting position shown on
  • a calibration application may either wait to receive an input to the effect that the calibration routine is to continue or the calibration application may wait to receive data from the occupant sensing area with which calibration is being performed before continuing to the next step of the calibration routine.
  • occupant 1311 of seat 1312 may provide confirmation that they are sitting in a position for which calibration data is to be logged by pressing an input button 1314 on a hand held device or keyboard.
  • step 1304 data logging is performed for the position being adopted by the occupant. Data derived from the occupant sensing area is received and logged.
  • An individual data sample may comprise data relating to position and/or pressure.
  • Data logging may comprise logging sample data over a set period of time, logging a set quantity of sample data or logging sample data until instructions to terminate this process are received.
  • the particular style of data logging will influence the duration that an individual is required to maintain a position during this step.
  • step 1305 it is confirmed that data logging at step 1304 has terminated. If data logging at step 1304 is continued until an input to the effect that it is to stop is received, step 1305 may comprise confirmation of expiry of a time period. This step may comprise audio and visual confirmation that data logging is complete, and that the occupant may cease to maintain a particular sitting position, provided for example by another individual, an electronic device, or computer generated graphics.
  • a question is asked as to whether data logging is to be
  • step 1302 is entered. If the question asked at step 1302 is answered in the affirmative step 1302 is entered. If the question asked at step 1302 is answered in the affirmative step 1302 is entered. If the question asked at step 1302 is answered in the affirmative step 1302 is entered. If the question asked at step 1302 is answered in the affirmative step 1302 is entered. If the question asked at step 1302 is answered in the affirmative step 1302 is entered. If the question asked at step 1302 is entered. If the question asked at
  • step 1306 is answered in the negative, indicating that the calibration routine
  • step 1307 is entered. At this step each set of data logged at step
  • a calibration routine may incorporate different visual and audio prompts and/or feedback and levels of interactivity with an electronic or software application.
  • a calibration routine may prompt an occupant to adopt a number of extreme limit positions, for example leaning severely forwards, backwards, to the left and to the right, and may prompt an occupant to adopt the same position more than once.
  • a calibration routine provides more accurate and empirically derived data for use in identifying whether the occupant is adopting a posture of a particular initial ergonomic value at a particular time. According to one application of the described posture sensing system, a plurality of different personal settings can be stored and recalled again.
  • a plurality of different personal settings for the same individual may be, stored and/or personal settings for a plurality of different individuals may be stored.
  • the personal settings may be implemented in an absolute form, i.e. the calibration routine is performed again to change the settings, or an adjustable form, for example where the tolerances may be changed by the user within a predetermined extent.
  • the personal setting for an individual may be linked to network log in settings for that individual. The personal settings for an individual may then be implemented on confirmation that the individual has logged onto the network successfully.
  • Figure 14 shows a plurality of occupant sensing areas 1401 to 1403 connected via a network 1404, for example a local area network (LAN) or wide area network (WAN) to a data store 1405 supporting a posture sensing database 1406.
  • a network 1404 for example a local area network (LAN) or wide area network (WAN)
  • LAN local area network
  • WAN wide area network
  • input data derived from mechanical interaction with an occupant sensing area may be logged and recorded over a period of time. Data logging may be performed continuously • over an observation period, regardless of the postural condition identified, and whether or not real time feedback is also provided to an occupant.
  • a posture sensing database may be used to analyse the movements of an occupant during an observation period to: provide an alert to a third party when an occupant is adopting a posture of undesirable initial ergonomic value, to analyse how an occupant has responded to an alert routine, to identify trends in the movements of the occupant over time.
  • a posture sensing database may be useful in identifying whether any occupational health assistance or medical examination may be required for one or more individuals, whether in advance of a particular health condition occurring or in response to identification of a health concern.
  • the data stored in a posture sensing database may be continually updated, or may be updated less frequently by the retrieval of a set of data logged and recorded in a memory store provided for one or more occupant sensing areas.
  • Logging and collating of data may be used to identify periods of insufficient movement and, for example, to raise an occupant alert when an occupant is detected as having occupied a seat for too long without having taken sufficient desired or mandatory intervals of vacancy. Such periods of vacancy may promote good health and alertness levels. Thus, during posture sensing, no feedback or different levels or types of feedback may be provided to an occupant. In addition, a posture sensing system may offer different degrees and types of interactivity to an occupant.
  • a posture sensing system may prompt an occupant to play a game or engage in an activity that uses an occupant sensing area as a controller.
  • the posture sensing system incorporates a clock to time periods of occupancy and to periodically prompt the occupant to engage in a recreational activity.
  • occupant 1501 is shown interacting with a computer
  • Occupant 1501 is controlling the motion of aircraft 1503 relative to a computer generated background by moving about on occupant sensing area 1504 of chair 1505. For example, leaning from a left leaning position to a right leaning position may change the direction in which the aircraft 1503 is shown flying, and leaning from a forward leaning position to a backward leaning position may change the height at which the aircraft 1503 is shown flying.
  • Different activities may be presented randomly or in accordance with rules. For example, activities may be correlated to different aspects of an observed sitting pattern, for example to reward an occupant for reacting quickly to alerts raised.
  • Figure 16 shows a chair 1601 having a first occupant sensing area
  • Figure 16 shows data plot 512 of Figure 5, from which it can be
  • this data plot may be derived from either an occupant posture as illustrated at 1606
  • occupant 1608 is
  • occupant 1608 is sitting on seat 1609 in a forward leaning fashion with their legs tucked underneath the chair and pressing against the front of the seat.
  • the second occupant sensing area 1604 is utilised to distinguish between the two postural conditions, shown at 1606 and 1 607.
  • the occupant posture at 1606 is such that the occupant 1608 is leaning against the second occupant sensing area 1604, whereas the occupant posture at 1607 is such that the occupant 1608 is not contacting the occupant sensing area 1604.
  • data processing is performed only for data derived from the first occupant sensing area 1602 whilst the data is determined to represent a posture of satisfactory
  • data processing may be performed for both occupant sensing areas 1602,
  • a plurality of occupant sensing areas of a chair may be provided as electrically separate sensing areas, as utilised by chair 1601 , or may be
  • Chair 1611 has a first occupant sensing area 1612 that extends along the seat part 1613 and up along the back rest part 1614.
  • a second occupant sensing area 1615 is provided on right arm rest 1616 and a third occupant sensing area 1617 is provided on left arm rest 1418.
  • An occupant sensing area 1612 may comprise a position detector having a single continuous sensing area.
  • the occupant sensing area 1612 may comprise a position detector having a continuous surface area, but having a plurality of sensing regions.
  • a sensor having a plurality of multiplexed sensing regions is disclosed in International Patent Publication No WO 01/75924. The contents of International Patent Publication No WO 01/75924 are incorporated herein by reference.
  • the sensing regions of this type of position detector may take the form of rows only, columns only, intersections of rows and columns only or a combination of these. Providing a chair with multiple occupant sensing areas provides for more sophisticated analysis of the posture of an occupant of the chair.
  • FIG. 17 illustrates components of a portable posture sensing system.
  • Position detector 1701 is electrically connected to a control circuit 1702, which is configured to identify electrical characteristics of the detector 1701.
  • Control circuit 1702 is configured to identify the position of a
  • a computer readable medium 1705 having software application instructions, for example to support a computer generated display, a calibration routine, data logging and/or a computer generated alert, may also accompany the portable detector. It is to be appreciated that a posture sensing system may be used to monitor postures adopted in positions other than sitting positions, for example standing or lying positions. In the example shown in Figure 17, a second position detector 1706
  • Second detector 1706 is of the
  • detector 1701 and second detector 1705 are permanently connected. However, a detector may be configured to be connected and disconnected to another detector. This feature enables convenient adaptation of the arrangement of occupant sensing areas of a posture sensing system.
  • third detector 1708 having a plurality of sensing regions arranged in columns 1709, is provided with a releasable electrical connector 1710.
  • a third detector 1708 is provided with a connection cable 1711 that is long enough for the detector to be oriented with the columns 1509 effectively acting as rows.
  • a bag 1712 preferably having carrying handles, may be provided to facilitate transport of a portable detector or portable sensing system.
  • a posture sensing system may comprise: a seat having one or more occupant sensing areas manufactured therein, a portable detector for overlaying a seat in combination with a separate data processing system, a completely self contained stand alone arrangement, which may be manually portable, or a combination of these.
  • Figure 18 A posture sensing system as described may provide an occupant with substantially real time feedback regarding the current postural condition. As previously described, feedback may comprise an input to a motor. Figure 18 shows a workstation scenario substantially similar to that of
  • leg of chair 1801 and desk 1802 is provided with a motorised mechanism, such as mechanism 1803 or desk leg 1804, which when operated adjust the distance between parts of the leg either side of the mechanism.
  • the motorised mechanisms may be arranged to receive an input derived from data processing of data derived from occupant portion 1805 of chair 1801.
  • the height of the chair 1801 and or the height of the desk 1802 may be adjusted to facilitate the occupant 106 in adopting a posture of high initial ergonomic value. Adjustments may be automatically performed or required to be performed in direct response to detection of a posture of low initial ergonomic value.
  • one or more elements of a chair for example back rest 1805 of chair 1801
  • one or motorised elements of equipment in the immediate environment of an observed occupant may be operated to alter relative physical relationships that ergonomically influence how an individual holds themselves.

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  • Seats For Vehicles (AREA)

Abstract

La présente invention se rapporte à un appareil capteur de posture comportant un détecteur de position conçu pour être utilisé avec un siège, un dispositif de traitement de données conçu pour recevoir des données d'entrée provenant dudit détecteur de position et représentatives de la position d'une interaction mécanique avec le détecteur de position, et ayant accès à des données de référence, et un dispositif de rétroaction conçu pour recevoir une entrée provenant du dispositif de traitement des données; ledit dispositif de traitement des données étant conçu pour comparer des données d'entrée à des données de référence de manière à identifier une condition posturale non satisfaisante et pour délivrer en conséquence une entrée audit dispositif de rétroaction. Le dispositif de rétroaction peut générer une alerte visuelle, une alerte auditive, une alerte tactile et/ou une entrée destinée à un moteur. Une condition posturale non satisfaisante peut être identifiée lors de la détermination d'une posture de valeur ergonomique initiale faible, d'une posture de valeur ergonomique initiale élevée maintenue pendant une période prédéterminée ou une période d'occupation maintenue pendant un laps de temps prédéterminé.
PCT/GB2005/000352 2004-02-03 2005-02-02 Capteur de posture WO2005074754A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0402316.4 2004-02-03
GB0402316A GB0402316D0 (en) 2004-02-03 2004-02-03 Position and pressure detector

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WO2005074754A1 true WO2005074754A1 (fr) 2005-08-18

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WO2008119106A1 (fr) * 2007-03-20 2008-10-09 Liam James Magee Procédé et aide pour alerter une personne de la nécessité de prendre une position de posture du dos correcte lorsqu'elle est assise sur un siège
DE102008044848A1 (de) * 2008-08-28 2010-03-04 Logicdata Electronic & Software Entwicklungs Gmbh Möbelsystem und Verfahren zum Betreiben eines solchen
DE102009053312A1 (de) * 2009-11-14 2011-05-26 Stabilus Gmbh Ergonomisches Möbelsystem
DE102013109830A1 (de) * 2013-09-09 2015-03-12 Logicdata Electronic & Software Entwicklungs Gmbh Die Erfindung betrifft ein Ergonomiesystem für ein Arbeitsplatzsystem.
EP2957193A1 (fr) * 2014-06-19 2015-12-23 Harman International Industries, Incorporated Technique de réglage de la position d'une personne assise
EP3000359A1 (fr) 2014-09-26 2016-03-30 Sitag AG Siege
WO2016053398A1 (fr) * 2014-09-30 2016-04-07 Darma Inc. Systèmes et procédés de surveillance de signes vitaux et de posture
CN106017798A (zh) * 2016-05-16 2016-10-12 浙江大学 一种基于称重传感器的人体行为反馈装置和方法
EP3155959A1 (fr) * 2015-10-09 2017-04-19 Burkhard Hübner Méthode et dispositif pour l'execution d'exercices de gymnastique
WO2017083589A1 (fr) * 2015-11-10 2017-05-18 The Postureapp, Llc Promotion d'une posture correcte pendant l'utilisation de dispositifs
US9661928B2 (en) 2015-09-29 2017-05-30 Lear Corporation Air bladder assembly for seat bottoms of seat assemblies
US9827888B2 (en) 2016-01-04 2017-11-28 Lear Corporation Seat assemblies with adjustable side bolster actuators
US9845026B2 (en) 2015-05-19 2017-12-19 Lear Corporation Adjustable seat assembly
US9884570B2 (en) 2015-05-19 2018-02-06 Lear Corporation Adjustable seat assembly
US9907396B1 (en) 2012-10-10 2018-03-06 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US9921726B1 (en) 2016-06-03 2018-03-20 Steelcase Inc. Smart workstation method and system
US9987961B2 (en) 2014-06-09 2018-06-05 Lear Corporation Adjustable seat assembly
US10038952B2 (en) 2014-02-04 2018-07-31 Steelcase Inc. Sound management systems for improving workplace efficiency
US10085562B1 (en) 2016-10-17 2018-10-02 Steelcase Inc. Ergonomic seating system, tilt-lock control and remote powering method and appartus
US10328823B2 (en) 2014-06-09 2019-06-25 Lear Corporation Adjustable seat assembly
DE102018121520A1 (de) * 2018-09-04 2020-03-05 Admin1 Gmbh Ergonomiesystem, insbesondere intelligent gesteuertes ergonomisch optimiertes Sitzsystem und Verfahren zur ergonomischen Einstellung eines Arbeitsplatzes
US10827829B1 (en) 2012-10-10 2020-11-10 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US11627816B2 (en) 2017-01-16 2023-04-18 Textron Innovations, Inc. Automatically adjusting comfort system

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WO2008119106A1 (fr) * 2007-03-20 2008-10-09 Liam James Magee Procédé et aide pour alerter une personne de la nécessité de prendre une position de posture du dos correcte lorsqu'elle est assise sur un siège
DE102008044848A1 (de) * 2008-08-28 2010-03-04 Logicdata Electronic & Software Entwicklungs Gmbh Möbelsystem und Verfahren zum Betreiben eines solchen
DE102008044848B4 (de) * 2008-08-28 2020-02-27 Logicdata Electronic & Software Entwicklungs Gmbh Möbelsystem und Verfahren zum Betreiben eines solchen
DE102009053312B4 (de) * 2009-11-14 2017-02-23 Stabilus Gmbh Ergonomisches Möbelsystem und ein Verfahren zum Einstellen eines ergonomischen Möbelsystems
DE102009053312A1 (de) * 2009-11-14 2011-05-26 Stabilus Gmbh Ergonomisches Möbelsystem
US10130170B1 (en) 2012-10-10 2018-11-20 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US9907396B1 (en) 2012-10-10 2018-03-06 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US11918116B1 (en) 2012-10-10 2024-03-05 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10866578B1 (en) 2012-10-10 2020-12-15 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10130169B1 (en) 2012-10-10 2018-11-20 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10209705B1 (en) 2012-10-10 2019-02-19 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10827829B1 (en) 2012-10-10 2020-11-10 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10206498B1 (en) 2012-10-10 2019-02-19 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10802473B2 (en) 2012-10-10 2020-10-13 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10133261B2 (en) 2012-10-10 2018-11-20 Steelcase Inc. Height-adjustable support surface and system for encouraging human movement and promoting wellness
US10719064B1 (en) 2012-10-10 2020-07-21 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10691108B1 (en) 2012-10-10 2020-06-23 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US9971340B1 (en) 2012-10-10 2018-05-15 Steelcase Inc. Height adjustable support surface and system for encouraging human movement and promoting wellness
US10092092B2 (en) 2013-09-09 2018-10-09 Logicdata Electronic & Software Entwicklungs Gmbh Ergonomics system for a workplace system
DE102013109830B4 (de) * 2013-09-09 2020-02-06 Logicdata Electronic & Software Entwicklungs Gmbh Die Erfindung betrifft ein Ergonomiesystem für ein Arbeitsplatzsystem.
DE102013109830A1 (de) * 2013-09-09 2015-03-12 Logicdata Electronic & Software Entwicklungs Gmbh Die Erfindung betrifft ein Ergonomiesystem für ein Arbeitsplatzsystem.
US10869118B2 (en) 2014-02-04 2020-12-15 Steelcase Inc. Sound management systems for improving workplace efficiency
US10419842B2 (en) 2014-02-04 2019-09-17 Steelcase Inc. Sound management systems for improving workplace efficiency
US10038952B2 (en) 2014-02-04 2018-07-31 Steelcase Inc. Sound management systems for improving workplace efficiency
US9987961B2 (en) 2014-06-09 2018-06-05 Lear Corporation Adjustable seat assembly
US10328823B2 (en) 2014-06-09 2019-06-25 Lear Corporation Adjustable seat assembly
US9808084B2 (en) 2014-06-19 2017-11-07 Harman International Industries, Incorporated Technique for adjusting the posture of a seated person
JP2016002456A (ja) * 2014-06-19 2016-01-12 ハーマン インターナショナル インダストリーズ インコーポレイテッド 着席者の姿勢を調整するための技術
EP2957193A1 (fr) * 2014-06-19 2015-12-23 Harman International Industries, Incorporated Technique de réglage de la position d'une personne assise
EP3000359A1 (fr) 2014-09-26 2016-03-30 Sitag AG Siege
US9655526B2 (en) 2014-09-30 2017-05-23 Shenzhen Darma Technology Co., Ltd. Vital signs fiber optic sensor systems and methods
WO2016053398A1 (fr) * 2014-09-30 2016-04-07 Darma Inc. Systèmes et procédés de surveillance de signes vitaux et de posture
CN106793878B (zh) * 2014-09-30 2018-07-06 深圳市大耳马科技有限公司 姿态和生命体征监测系统及方法
US9884570B2 (en) 2015-05-19 2018-02-06 Lear Corporation Adjustable seat assembly
US9845026B2 (en) 2015-05-19 2017-12-19 Lear Corporation Adjustable seat assembly
US9661928B2 (en) 2015-09-29 2017-05-30 Lear Corporation Air bladder assembly for seat bottoms of seat assemblies
EP3155959A1 (fr) * 2015-10-09 2017-04-19 Burkhard Hübner Méthode et dispositif pour l'execution d'exercices de gymnastique
WO2017083589A1 (fr) * 2015-11-10 2017-05-18 The Postureapp, Llc Promotion d'une posture correcte pendant l'utilisation de dispositifs
US9827888B2 (en) 2016-01-04 2017-11-28 Lear Corporation Seat assemblies with adjustable side bolster actuators
CN106017798A (zh) * 2016-05-16 2016-10-12 浙江大学 一种基于称重传感器的人体行为反馈装置和方法
US9921726B1 (en) 2016-06-03 2018-03-20 Steelcase Inc. Smart workstation method and system
US10459611B1 (en) 2016-06-03 2019-10-29 Steelcase Inc. Smart workstation method and system
US10631640B2 (en) 2016-10-17 2020-04-28 Steelcase Inc. Ergonomic seating system, tilt-lock control and remote powering method and apparatus
US10085562B1 (en) 2016-10-17 2018-10-02 Steelcase Inc. Ergonomic seating system, tilt-lock control and remote powering method and appartus
US10863825B1 (en) 2016-10-17 2020-12-15 Steelcase Inc. Ergonomic seating system, tilt-lock control and remote powering method and apparatus
US10390620B2 (en) 2016-10-17 2019-08-27 Steelcase Inc. Ergonomic seating system, tilt-lock control and remote powering method and apparatus
US11627816B2 (en) 2017-01-16 2023-04-18 Textron Innovations, Inc. Automatically adjusting comfort system
DE102018121520A1 (de) * 2018-09-04 2020-03-05 Admin1 Gmbh Ergonomiesystem, insbesondere intelligent gesteuertes ergonomisch optimiertes Sitzsystem und Verfahren zur ergonomischen Einstellung eines Arbeitsplatzes

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