Occupant feature detection method and system, and computer readable medium

An occupant feature detection method, comprising:

• S101:
• inflating a seat cushion airbag with a gas of a first predetermined volume, and measuring a reference pressure formed by the gas of the first predetermined volume when no occupant is seated;
• S102:
• measuring a first pressure formed by the gas of the first predetermined volume after an occupant is seated;
• and
• S103:
• obtaining a first weight based on a difference between the reference pressure and the first pressure, and using the first weight as a reference weight of the occupant, wherein before, when, or after step S101 is performed, the method comprises:
• S111:
• inflating the seat cushion airbag with a gas of a second predetermined volume, and measuring reference pressures formed by the gas of the second predetermined volume at various positions of the seat cushion airbag when no occupant is seated;
• S112:
• measuring second pressures formed by the gas of the second predetermined volume at the various positions of the seat cushion airbag when an occupant is seated;
• and obtaining a second sitting position of the occupant in a vehicle by using an occupant observation module;
• S113:
• inferring a first sitting position based on a difference between the reference pressure and the second pressure that are at each position of the seat cushion airbag;
• and
• S114:
• calculating a weighted position based on a third weighting value allocated to the first sitting position and a fourth weighting value allocated to the second sitting position, and using the weighted position as a reference sitting position of the occupant.

An occupant feature detection system, comprising a seat cushion airbag, wherein the occupant feature detection system further comprises an inflation module configured to inflate the seat cushion airbag, a control module, a detection module, and a calculation module, wherein

• the control module is configured to control the inflation module to inflate the seat cushion airbag with a gas of a first predetermined volume;
• the detection module is configured to measure a reference pressure formed by the gas of the first predetermined volume when no occupant is seated, and measure a first pressure formed by the gas of the first predetermined volume when it is detected that an occupant is seated;
• and
• the calculation module is configured to obtain a first weight based on a difference between the reference pressure and the first pressure, and use the first weight as a reference weight of the occupant;
• wherein the occupant feature detection system further comprises an occupant observation module configured to obtain a size of the occupant and obtain a second weight based on the size;
• and
• the calculation module is configured to calculate a weighted weight based on a first weighting value allocated to the first weight and a second weighting value allocated to the second weight, and use the weighted weight as the reference weight of the occupant.