Method of body scanning detection for advanced robotic massage chairs

A method for scanning a user's body in a massage chair using a roller mechanism and an electronic system, method comprising:

• driving a roller mechanism along the user's body;
• poking on a user's back with a roller as the roller mechanism is moving;
• wherein, poking is generated by driving an intensity control motor to cause the roller to move forward and backward;
• during a poke, the electronic system records load current of the intensity control motor and distance that the roller traveled, and compares the recorded motor load current to a threshold;
• and
• processing the recorded motor load current data to generate a body shape curve or locate a position of a user's body part, including a shoulder, or neck, or lower back, or mid back, or upper back positions of the user's body;
• wherein, the roller mechanism includes a roller motion drive element to hold or support a driving ball bearing, the roller motion drive element having an aperture for a driving shaft to pass through;
• and
• wherein, said driving shaft configured to pass through the roller motion drive element in an offset non-perpendicular angle relative to a driving ball bearing side face.

A method for scanning a user's body in a massage chair using a roller mechanism and an electronic system, method comprising:

• driving a roller mechanism along the user's body;
• poking on a user's back with a roller as the mechanism is moving;
• wherein, poking is generated by driving an intensity control motor to cause the roller to move forward and backward;
• during a poke, the electronic system records load current of the intensity control motor and distance that the roller traveled, and compares the recorded motor load current to a threshold;
• and
• processing the recorded motor load current data to generate a body shape curve or locate a position of a user's body part, including a shoulder, or neck, or lower back, or mid back, or upper back positions of the user;
• wherein, the electronic system includes a motor current sensor, and an analog to digital conversion, a motor control, and a digital signal processor with embedded software;
• wherein, the roller mechanism includes a roller motion drive element to hold or support a driving ball bearing, the roller motion drive element having an aperture for a driving shaft to pass through;
• and
• wherein, said driving shaft configured to pass through the roller motion drive element in an offset non-perpendicular angle relative to a driving ball bearing side face.