Smart seat monitoring system

• US 9,504,416 B2
• Filed: 07/03/2014
• Issued: 11/29/2016
• Est. Priority Date: 07/03/2013
• Status: Active Grant

• Current Assignee: Sleep Number Corporation
• Original Assignee: SleepIQ Labs Inc. (Sleep Number Corporation)
• Inventors: Young, Steven J., Hewitt, Carl, Luckow, Al
• Primary Examiner(s): Cranmer, Laurie K
• Application Number:
  US14/323,195
• Publication Number:
  US 20150008710A1
• Time in Patent Office: 880 Days
• Field of Search: 297/284.1, 297/284.2, 297/284.3, 297/217.1, 297/217.2
• US Class Current: 1/1
• CPC Class Codes: A47C 27/083 with pressure control, e.g. with pressure sensors
• CPC Class Codes: A47C 31/126 for chairs
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/18 for vehicle drivers or machine operators
• CPC Class Codes: A61B 5/4809 Sleep detection, i.e. determining whether a subject is asleep or not
• CPC Class Codes: A61B 5/6893 Cars
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60N 2/0022 for sensing anthropometric parameters, e.g. heart rate or body temperature
• CPC Class Codes: B60N 2/0023 for detection of driver fatigue
• CPC Class Codes: B60N 2/0033 mounted on or in the foam cushion
• CPC Class Codes: B60N 2/0035 characterised by the sensor data transmission, e.g. wired connections or wireless transmitters therefor; characterised by the sensor data processing, e.g. seat sensor signal amplification or electric circuits for providing seat sensor information
• CPC Class Codes: B60N 2/0276 reaction to emergency situations, e.g. crash
• CPC Class Codes: B60N 2/914 Hydro-pneumatic adjustments of the shape
• CPC Class Codes: B60N 2/976 massaging systems
• CPC Class Codes: B60N 2002/981 Warning systems, e.g. the seat or seat parts vibrates to warn the passenger when facing a danger
• CPC Class Codes: B60N 2210/30 Temperature sensors
• CPC Class Codes: B60N 2210/44 using fluids
• CPC Class Codes: B60N 2220/20 using a deterministic algorithm
• CPC Class Codes: B60N 2230/30 Signal processing of sensor data

Abstract

A seat monitoring system comprises a first layer of one or more fluid bladders packaged within a seat, a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer, an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer and a controller configured to: collect pressure data; determine from the pressure data a monitored parameter relevant to a subject in the seat; and change an aspect of the seat based on the monitored parameter. Methods of using the seat monitoring system can include determining a drowsiness threshold and altering a user that he or she is getting drowsy.

Claims

1. A seat monitoring system comprising:

a first layer of one or more fluid bladders packaged within a seat;

a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer;

an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer; and

a controller configured to;

collect pressure data;

determine from the pressure data a monitored parameter relevant to a subject in the seat; and

change an aspect of the seat based on the monitored parameter; and

an array of one or more actuators for controlling the first layer and configured to communicate with the controller and the pump;

wherein the array of one or more actuators and the pump receive commands from the controller based on the monitored parameter to increase or decrease fluid pressure in one or more bladders within the first layer;

wherein the array of one or more actuators is configured to selectively target a region of the first layer to increase or decrease fluid pressure in that region, the region including one or more fluid bladders; and

wherein the monitored parameter is the subject'"'"'s position, at least one of the one or more fluid bladders comprises interleaved halves and the subject'"'"'s position is based on a difference in pressure between the interleaved halves.

2. The seat monitoring system of claim 1, wherein the monitored parameter is at least one vital sign including the subject'"'"'s heart rate and the subject'"'"'s respiration rate.

3. The seat monitoring system of claim 1, wherein the monitored parameter is the subject'"'"'s lack of movement, and the controller is configured to send commands to the array of one or more actuators to increase or decrease the fluid pressure in the one or more bladders within the first layer when the lack of movement has elapsed for a threshold time period.

4. The seat monitoring system of claim 1, wherein the monitored parameter is the subject'"'"'s sleepiness level.

5. The seat monitoring system of claim 1, wherein the control unit communicates with an external device coupled to a display configured to display the monitored parameter.

6. The seat monitoring system of claim 5, wherein the external device comprises a memory configured to store a database of information generated over time including at least one of the pressures within the first layer of fluid bladders and vital signs of the subject.

7. The seat monitoring system of claim 1, wherein the seat is a vehicle driver seat and the control unit communicates with a vehicle system configured to provide an alert to the subject in the vehicle driver seat based on the monitored parameter.

8. The seat monitoring system of claim 1 further comprising:

a temperature sensor, wherein the controller is further configured to receive and store temperature data from the temperature sensor, wherein determining the monitored parameter comprises evaluating data by recording more than one of;

absolute pressure of the one or more fluid bladders over time;

at least one of a heart rate and a respiration rate of the subject over time based on a first range of pressure changes in at least one of the one or more bladders;

length of sitting episodes of the subject in the seat over time; and

shifting of the subject in the seat during the sitting episodes based on a second range of pressure changes in the one or more bladders, and

wherein evaluating the data over the time comprises accessing periods of drowsiness of the subject based on the data.

9. The seat monitoring system of claim 8 further comprising an alerting mechanism configured to receive a signal from the controller, the controller further configured to:

determine a sleepiness threshold from the evaluated data;

determine during monitoring of the subject when current data is approaching the sleepiness threshold; and

send the signal to the alerting mechanism to alert the subject to make a change in at least one of temperature, position, rising from the seat, pressure in at least one of the one or more fluid bladders.

10. The seat monitoring system of claim 9, wherein the seat is a vehicle driver seat.

11. The seat monitoring system of claim 8, wherein the controller is further configured to:

determine a sleepiness threshold from the evaluated data;

determine during monitoring of the subject when current data is approaching the sleepiness threshold; and

send a signal to the alerting mechanism to alert the subject to make a change in at least one of temperature, position, rising from the seat, pressure in at least one of the one or more fluid bladders.

12. The seat monitoring system of claim 1 further comprising:

a second layer of fluid bladders packaged within the seat;

the pump in fluid communication with the second layer, the pump operable to increase fluid pressure of each bladder within the second layer; and

an array of one or more actuators for controlling the second layer and configured to communicate with the controller and the pump;

wherein the array of one or more actuators and the pump receive commands from the controller to increase or decrease fluid pressure in one or more bladders within the second layer based on the monitored parameter.

13. A method of monitoring a subject in a seat comprising:

collecting with a computer data from a smart seat system when a subject is seated in the smart seat system, the smart seat system comprising;

a first layer of one or more fluid bladders packaged within a seat cushion;

a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer; and

an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer;

wherein the data comprises one or more of;

absolute pressure of the one or more fluid bladders over time;

at least one of a heart rate and a respiration rate of the subject over time based on a first range of pressure changes in at least one of the one or more bladders;

length of sitting episodes of the subject in the seat over time; and

shifting of the subject in the seat during the sitting episodes based on a second range of pressure changes in the one or more bladders; and

determining from the data a monitored parameter relevant to the subject; and

changing the fluid pressure in one of the one or more fluid bladders in response to the monitored parameter; and

wherein the monitored parameter is the subject'"'"'s position, at least one of the one or more fluid bladders comprises interleaved halves and the subject'"'"'s position is based on a difference in pressure between the interleaved halves.

14. The method of claim 13, wherein the smart seat system further comprises a temperature sensor, the method further comprising:

receiving and storing temperature data from the temperature sensor;

evaluating the collected data to accessing periods of drowsiness of the subject based on the collected data.

15. The method of claim 14 wherein the smart seat system further comprises an alerting mechanism, the method further comprising:

determining a sleepiness threshold from the evaluated data;

determining during monitoring of the subject when current data is approaching the sleepiness threshold; and

initiating the alerting mechanism to alert the subject to make a change in at least one of temperature, position, rising from the seat, and pressure in at least one of the one or more fluid bladders.

16. A seat monitoring system comprising:

a first layer of one or more fluid bladders packaged within a seat;

a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer;

an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer; and

a controller configured to;

collect pressure data;

determine from the pressure data a monitored parameter relevant to a subject in the seat; and

change an aspect of the seat based on the monitored parameter;

wherein the monitored parameter is the subject'"'"'s position, at least one of the one or more fluid bladders comprises interleaved halves and the subject'"'"'s position is based on a difference in pressure between the interleaved halves.

17. A seat monitoring system comprising:

a first layer of one or more fluid bladders packaged within a seat;

a pump in fluid communication with the first layer, the pump operable to increase fluid pressure of each bladder within the first layer;

an array of one or more sensors in fluid communication with the first layer and operative to sense pressure and pressure changes within each bladder within the first layer; and

a controller configured to;

collect pressure data;

determine from the pressure data a monitored parameter relevant to a subject in the seat; and

change an aspect of the seat based on the monitored parameter a second layer of fluid bladders packaged within the seat;

the pump in fluid communication with the second layer, the pump operable to increase fluid pressure of each bladder within the second layer; and

an array of one or more actuators for controlling the second layer and configured to communicate with the controller and the pump;

wherein the array of one or more actuators and the pump receive commands from the controller to increase or decrease fluid pressure in one or more bladders within the second layer based on the monitored parameter.