Seat assembly for a vehicle

A seat assembly (100) for a vehicle, comprising:

• a seat frame (10);
• an air pump unit (40);
• a plurality of support units (20) disposed on the seat frame (10), wherein each of the plurality of support units (20) comprises:
• a support tray (21);
• a cylinder (22) connected to the support tray (21);
• a pressure sensor (25);
• an intake valve (23);
• and
• an exhaust valve (24);
• wherein a gas supply to the cylinder (22) from the air pump unit (40) is controllable via the intake valve (23), wherein a gas discharge from the cylinder (22) is controllable via the exhaust valve (24), and wherein an occupant of the vehicle is supportable by the support tray (21) and a support force and a support height of the support tray (21) is adjustable through the cylinder (22);
• and
• a controller (30), wherein the controller (30) is configured to receive a pressure signal detected by the pressure sensor (25) of each of the plurality of support units (20) and to control an open state or a closed state of the intake valve (23) and the exhaust valve (24) of each of the plurality of support units (20) separately according to the pressure signal.