Sheet-type including first and second sensors to acquire information of a user device and system

1 . A sheet-type device that can be arranged under a user, the sheet-type device comprising:

a plurality of first sensors configured to acquire a weight of the user;

a second sensor configured to acquire biological information of the user; and

a controller configured to acquire values acquired from the first sensors and to determine a state of the user, wherein the first sensors and the second sensor are arranged in one line along a right-left direction of the user, and the second sensor is arranged between the first sensors,

wherein the controller is configured to:

acquire, from the first sensors, first values corresponding to the absolute amount of load and output continuously when the user is detected; and

acquire, from the second sensor, second values corresponding to load variation or vibration, the output of which is stopped after the load stabilizes.

2 . The sheet-type device according to claim 1 , wherein

the first sensors and the second sensor are arranged at equally-spaced intervals along the right-left direction.

3 . The sheet-type device according to claim 1 , wherein

the controller is configured

to calculate a center of the weight of the user from the values acquired from the first sensors, and

to determine the state of the user from the center of the weight of the user.

4 . The sheet-type device according to claim 3 , wherein

the controller is configured to determine a posture of the user as the state of the user.

5 . The sheet-type device according to claim 4 , wherein

the sheet-type device can be arranged between a bed apparatus and a mattress, and

the controller is configured:

to determine, as the state of the user, whether the user gets out of or is staying on the bed apparatus, and

to determine, as the posture of the user, whether the posture of the user is a lying position or an edge sitting position when the user is staying on the bed apparatus.

6 . The sheet-type device according to claim 5 , wherein

the controller is configured:

to set a plurality of virtual areas on the bed apparatus based on arrangement of the first sensors, and

to acquire the state of the user based on the center of the weight of the user and the virtual areas.

7 . The sheet-type device according to claim 6 , wherein

the controller is configured to divide the virtual area into a plurality of rectangular sub-areas, each of which includes a corresponding first sensor from the first sensors.

8 . The sheet-type device according to claim 7 , wherein

the controller is configured to set the area, for which a notification is activated if the center of the weight of the user is included therein the set area from the plurality of rectangular sub-areas.

9 . The sheet-type device according to claim 7 , wherein

if the center of the weight of the user moves within the sub-area and the value acquired from the first sensor changes over a threshold or more, the controller is configured to determine that the user has rolled over as the state of the user.

10 . The sheet-type device according to claim 1 further comprising:

a communicator including a third sensor to acquire the weight of the user and can be connected to a sheet-type movement acquisition device arranged under the user, wherein

the controller is configured:

to acquire a value acquired from the third sensor, and

to determine the state of the user from the value acquired from the first sensor and the value acquired from the third sensor.

11 . The sheet-type device according to claim 10 , wherein

if the value acquired from the first sensor is reduced and the value acquired from the third sensor is increased, the controller is configured to determine that the user has sat up as the state of the user.

12 . The sheet-type device according to claim 10 , wherein the controller is configured to set a plurality of virtual areas on the bed apparatus based on arrangement of the first sensors and the third sensor, and to set an area for which a notification is activated if the center of the weight of the user is included therein the set area, wherein the plurality of virtual areas are divided along the longitudinal direction of the user's body.

13 . The sheet-type device according to claim 1 , further comprising a presser disposed above the first sensors, wherein the height of the presser, when disposed above the first sensor, is lower than the height of the second sensor and higher than the height of a cushioning part of the sheet-type device.

14 . The sheet-type device according to claim 1 , wherein the controller is configured to calculate the biological information by applying a weight to a detection value of the second sensor according to the sleeping position or sleeping posture of the user.

15 . A system comprising:

a first sheet-type device that can be arranged on a bed apparatus and in which a plurality of first pressure-sensitive sensors are arranged in a longitudinal direction; and

a second sheet-type device that can be arranged on the bed apparatus and in which a plurality of second pressure-sensitive sensors are arranged in a longitudinal direction, wherein

the first sheet-type device is arranged at a first position of the bed apparatus such that the first pressure-sensitive sensors are arranged at equally-spaced intervals along a width direction of the bed apparatus,

the second sheet-type device is arranged at a second position of the bed apparatus such that the second pressure-sensitive sensors are arranged at equally-spaced intervals along the width direction of the bed apparatus, the second position being different from the first position and

the first sheet-type device is configured:

to acquire, from the second sheet-type device, values acquired by the second pressure-sensitive sensors, and

to acquire a state of the user on the bed apparatus based on the values acquired from the first pressure-sensitive sensors and values acquired from a second acquisition device, and

wherein the first sheet-type device further comprises a third sensor configured to acquire biological information of the user, the third sensor being arranged in one line along the width direction of the bed apparatus and being arranged between the first pressure-sensitive sensors, and

wherein the first sheet-type device's controller is configured to:

acquire, from the first and second pressure-sensitive sensors, first values corresponding to the absolute amount of load and output continuously when the user is detected; and

acquire, from the third sensor, second values corresponding to load variation or vibration, the output of which is stopped after the load stabilizes, and acquire the state of the user on the bed apparatus based on the first values and the second values.

16 . The system according to claim 15 , wherein the third sensor is a sensor configured to detect vibration with higher sensitivity than the first pressure-sensitive sensors.