摘要：
The present invention mainly relates to the technical field of pressure test, and provides a dummy for testing the pressure comfort of an office chair. The dummy includes a head, a chest, a back, a left upper arm, a right upper arm, a left forearm, a right forearm, a left hand, a right hand, a hip, a left thigh, a right thigh, a left calf, a right calf, a left foot and a right foot, which are designed according to the human body size of the 5 0th percentile Chinese adult male, and the mass and the position of center of mass of each body segment are configured according to human body inertial parameters of a standard adult. At the same time, a total of 22 pressure sensors are installed on the sides of the hip, left thigh and right thigh in contact with a sitting surface of the office chair for collecting pressure signals on the sides of the dummy in contact with the sitting surface of the office chair, and the comfort of the office chair is analyzed according to the pressure signals. The dummy is designed and constructed according to Chinese standard human body data, the pressure distribution condition on the sitting surface when a real person sits on the chair can be accurately simulated, and then the pressure comfort of the office chair can be accurately evaluated, thus replacing a large number of real people for testing, shortening the test time and reducing the labor cost. 1/3 54 2 10 14 13 16.15 Fig. I
权利要求：
CLAIMS:
1. A dummy for testing the pressure comfort of an office chair, wherein the dummy comprises:
a head (1), a chest (2), a back (3), a left upper arm (4), a right upper arm (5), a left forearm (6), a right forearm (7), a left hand (8), a right hand (9), a hip (10), a left thigh (11), a right thigh (12), a left calf (13), a right calf (14), a left foot (15) and a right foot (16), which are designed according to the human body size of the 50% percentile Chinese adult male, and the mass and the position of center of mass of each body segment are configured according to human body inertial parameters of a standard adult;
pressure sensors (19) are respectively installed at a left ischial tuberosity (17) and a right ischial tuberosity (18) corresponding to the hip (10), 4 pressure sensors (19) are uniformly installed on a circle with the left ischial tuberosity (17) as the circle center and R1 as the radius, and 4 pressure sensors (19) are uniformly installed on a circle with the right ischial tuberosity (18) as the circle center and R2 as the radius, wherein R1=R2; and
two pressure sensors (19) are symmetrically installed along the center line of the left thigh (11) on one side of the left thigh (11) in contact with a sitting surface of the office chair and at positions L1, L2, and L3 from the inner side of the left knee, respectively, wherein the distances L4 from the two pressure sensors (19) at each position to the center line of the left thigh (11) are equal, furthermore, two pressure sensors (19) are symmetrically installed along the center line of the right thigh (12) on one side of the right thigh (12) in contact with the sitting surface of the office chair and at positions L1, L2, and L3 from the inner side of the right knee, respectively, wherein the distances L4 from the two pressure sensors (19) at each position to the center line of the left thigh (11) are equal, L4<L1<L2<L3, and the pressure sensors (19) are used for collecting pressure signals on the sides of the hip (10), the left thigh (11) and the right thigh (12) in contact with the sitting surface of the office chair.
2. The dummy for testing the pressure comfort of the office chair according to claim 1, wherein R1=R2=5c¢m.
3. The dummy for testing the pressure comfort of the office chair according to claim 1, wherein L4=2cm, L1=10cm, L2=15c¢m, and L3=20cm.
4. The dummy for testing the pressure comfort of the office chair according to claim 1, wherein a right elbow joint is arranged between the right upper arm (5) and the right forearm (7),
and a left elbow joint is arranged between the left upper arm (4) and the left forearm (6);
a left hip joint is arranged between the hip (10) and the left thigh (11), and a right hip joint is arranged between the hip (10) and the right thigh (12);
a right knee joint is arranged between the right thigh (12) and the right calf (14), and a left knee joint is arranged between the left thigh (11) and the left calf (13); and
all of the right elbow joint, the left elbow joint, the left hip joint, the right hip joint, the right knee joint and the left knee joint are movable, so that the dummy has two forms, that is, a standing posture and a sitting posture.
5. The dummy for testing the pressure comfort of the office chair according to claim 1, wherein the bone shapes of the hip (10), the left thigh (11) and the right thigh (12) are printed by using the 3D printing technology, and the muscles of the hip (10), the left thigh (11) and the right thigh (12) are simulated by using rubber.
6. The dummy for testing the pressure comfort of the office chair according to claim 1, wherein the pressure sensor (19) is powered by a lithium battery.
7. The dummy for testing the pressure comfort of the office chair according to claim 1, wherein the dummy further comprises a wireless communication module installed in the trunk of the dummy, and the wireless communication module is used for transmitting the received pressure signal sent by the pressure sensor (19) to a computer terminal.
8. The dummy for testing the pressure comfort of the office chair according to claim 7, wherein the wireless communication module comprises at least one of a Bluetooth communication module, a mobile communication module and a local area network communication module.