METHOD OF DETECTING PRESENCE OF SUBJECT ON BED
First Claim
Patent Images
1. A bed occupancy state detection method, comprising:
- a load detection step for detecting loads applied to a head side right portion, a head side left portion, a foot side right portion, and a foot side left portion of a bed platform by first to fourth load detection means, respectively;
wherein load values outputted from the first to fourth load detection means are defined as W1, W2, W3, and W4, respectively,a first judgment step for judging whether or not a first judgment formula (1) is satisfied, wherein the first judgment formula (1) is given by W1/(W1+W3)≦
n1, where 0<
n1<
0.5 (n1;
previously set value);
a second judgment step for judging whether or not a second judgment formula (2) is satisfied, wherein the second judgment formula (2) is given by W1/(W1+W3)≧
n2, where 0.5<
n2<
1 (n2;
previously set value);
a third judgment step for judging whether or not a third judgment formula (3) is satisfied, wherein the third judgment formula (3) is given by W2/(W2+W4)≦
n3, where 0<
n3<
0.5 (n3;
previously set value);
a fourth judgment step for judging whether or not a fourth judgment formula (4) is satisfied, wherein the fourth judgment formula (4) is given by W2/(W2+W4)≧
n4, where 0.5<
n4<
1 (n4;
previously set value);
a fifth judgment step for judging whether or not a fifth judgment formula (5) is satisfied, wherein the fifth judgment formula (5) is given by W1/(W1+W2)≦
n5, where 0<
n5<
0.5 (n5;
previously set value);
a sixth judgment step for judging whether or not a sixth judgment formula (6) is satisfied, wherein the sixth judgment formula (6) is given by W1/(W1+W2)≧
n6, where 0.5<
n6<
1 (n6;
previously set value);
a seventh judgment step for judging whether or not a seventh judgment formula (7) is satisfied, wherein the seventh judgment formula (7) is given by W3/(W3+W4)≦
n7, where 0<
n7<
0.5 (n7;
previously set value);
an eighth judgment step for judging whether or not an eighth judgment formula (8) is satisfied, wherein the eighth judgment formula (8) is given by W3/(W3+W4)≧
n8, where 0.5<
n8<
1 (n8;
previously set value); and
a first notification step for notifying information on a bed occupancy state of an object when it is judged that at least one judgment formula is satisfied from a judgment result of at least one judgment step among the first to eighth judgment steps.
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Abstract
A bed occupancy state detection method includes detecting loads applied to a head side right portion, a head side left portion, a foot side right portion, and a foot side left portion of a bed platform by first to fourth load detecters, respectively, judging whether or not a prescribed judgment formula is satisfied based on load values outputted from the first to fourth load detecters, and notifying information on a bed occupancy state of an object in cases where it is judged that a judgment formula is satisfied from a judgment result at the judgment.
36 Citations
23 Claims
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1. A bed occupancy state detection method, comprising:
-
a load detection step for detecting loads applied to a head side right portion, a head side left portion, a foot side right portion, and a foot side left portion of a bed platform by first to fourth load detection means, respectively; wherein load values outputted from the first to fourth load detection means are defined as W1, W2, W3, and W4, respectively, a first judgment step for judging whether or not a first judgment formula (1) is satisfied, wherein the first judgment formula (1) is given by W1/(W1+W3)≦
n1, where 0<
n1<
0.5 (n1;
previously set value);a second judgment step for judging whether or not a second judgment formula (2) is satisfied, wherein the second judgment formula (2) is given by W1/(W1+W3)≧
n2, where 0.5<
n2<
1 (n2;
previously set value);a third judgment step for judging whether or not a third judgment formula (3) is satisfied, wherein the third judgment formula (3) is given by W2/(W2+W4)≦
n3, where 0<
n3<
0.5 (n3;
previously set value);a fourth judgment step for judging whether or not a fourth judgment formula (4) is satisfied, wherein the fourth judgment formula (4) is given by W2/(W2+W4)≧
n4, where 0.5<
n4<
1 (n4;
previously set value);a fifth judgment step for judging whether or not a fifth judgment formula (5) is satisfied, wherein the fifth judgment formula (5) is given by W1/(W1+W2)≦
n5, where 0<
n5<
0.5 (n5;
previously set value);a sixth judgment step for judging whether or not a sixth judgment formula (6) is satisfied, wherein the sixth judgment formula (6) is given by W1/(W1+W2)≧
n6, where 0.5<
n6<
1 (n6;
previously set value);a seventh judgment step for judging whether or not a seventh judgment formula (7) is satisfied, wherein the seventh judgment formula (7) is given by W3/(W3+W4)≦
n7, where 0<
n7<
0.5 (n7;
previously set value);an eighth judgment step for judging whether or not an eighth judgment formula (8) is satisfied, wherein the eighth judgment formula (8) is given by W3/(W3+W4)≧
n8, where 0.5<
n8<
1 (n8;
previously set value); anda first notification step for notifying information on a bed occupancy state of an object when it is judged that at least one judgment formula is satisfied from a judgment result of at least one judgment step among the first to eighth judgment steps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A bed occupancy state detection apparatus, comprising:
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first to fourth load detection means for detecting loads applied to a head side right portion, a head side left portion, a foot side right portion, and a foot side left portion of a bed platforms, respectively; wherein load values outputted from the first to fourth load detection means are defined as W1, W2, W3, and W4, respectively, first judgment means for judging whether or not a first judgment formula (1) is satisfied, wherein the first judgment formula (1) is given by W1/(W1+W3)≦
n1, where 0<
n1<
0.5 (n1;
previously set value);second judgment means for judging whether or not a second judgment formula (2) is satisfied, wherein the second judgment formula (2) is given by W1/(W1+W3)≧
n2, where 0.5<
n2<
1 (n2;
previously set value);fourth judgment means for judging whether or not a fourth judgment formula (4) is satisfied, wherein the fourth judgment formula (4) is given by W2/(W2+W4)≧
n4, where 0.5<
n4<
1 (n4;
previously set value);fifth judgment means for judging whether or not a fifth judgment formula (5) is satisfied, wherein the fifth judgment formula (5) is given by W1/(W1+W2)≦
n5, where 0<
n5<
0.5 (n5;
previously set value);sixth judgment means for judging whether or not a sixth judgment formula (6) is satisfied, wherein the sixth judgment formula (6) is given by W1/(W1+W2)≧
n6, where 0.5<
n6<
1 (n6;
previously set value);seventh judgment means for judging whether or not a seventh judgment formula (7) is satisfied, wherein the seventh judgment formula (7) is given by W3/(W3+W4)≦
n7, where 0<
n7<
0.5 (n7;
previously set value);eighth judgment means for judging whether or not an eighth judgment formula (8) is satisfied, wherein the eighth judgment formula (8) is given by W3/(W3+W4)≧
n8, where 0.5<
n8<
1 (n8;
previously set value); andfirst notification means for notifying information on a bed occupancy state of an object in cases where it is judged that at least one judgment formula is satisfied from a judgment result of at least one judgment means among the first to eighth judgment means. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A bed occupancy state monitoring system, comprising:
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first to fourth load detection means for detecting loads applied to a head side right portion, a head side left portion, a foot side right portion, and a foot side left portion of a bed platform, respectively; wherein load values outputted form the first to fourth load detection means are defined as W1, W2, W3, and W4, respectively, first judgment means for judging whether or not a first judgment formula (1) is satisfied, wherein the first judgment formula (1) is given by W1/(W1+W3)≦
n1, where 0<
n1<
0.5 (n1;
previously set value);second judgment means for judging whether or not a second judgment formula (2) is satisfied, wherein the second judgment formula (2) is given by W1/(W1+W3)≧
n2, where 0.5<
n2<
1 (n2;
previously set value);third judgment means for judging whether or not a third judgment formula (3) is satisfied, wherein the third judgment formula (3) is given by W2/(W2+W4)≦
n3, where 0<
n3<
0.5 (n3;
previously set value);fourth judgment means for judging whether or not a fourth judgment formula (4) is satisfied, wherein the fourth judgment formula (4) is given by W2/(W2+W4)≧
n4, where 0.5<
n4<
1 (n4;
previously set value);fifth judgment means for judging whether or not a fifth judgment formula (5) is satisfied, wherein the fifth judgment formula (5) is given by W1/(W1+W2)≦
n5, where 0<
n5<
0.5 (n5;
previously set value);sixth judgment means for judging whether or not a sixth judgment formula (6) is satisfied, wherein the sixth judgment formula (6) is given by W1/(W1+W2)≧
n6, where 0.5<
n6<
1 (n6;
previously set value);seventh judgment means for judging whether or not a seventh judgment formula (7) is satisfied, wherein the seventh judgment formula (7) is given by W3/(W3+W4)≦
n7, where 0<
n7<
0.5 (n7;
previously set value);eighth judgment means for judging whether or not an eighth judgment formula (8) is satisfied, wherein the eighth judgment formula (8) is given by W3/(W3+W4)≧
n8, where 0.5<
n8<
1 (n8;
previously set value); andnotification means for notifying information on a bed occupancy state of an object in cases where it is judged that at least one judgment formula is satisfied from a judgment result of at least one judgment means among the first to eighth judgment means.
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Specification