Pressure generating device and detecting system including the same

A pressure generating device, comprising:

• a tank having a chamber therein, and including an opening and a communication port each of which is in fluid communication with said chamber;
• a deformable membrane which is disposed to seal said opening, and which is deformable between a flat state and a deformed state;
• a driving device which is mounted to said tank and which includes a motor body and a driving shaft, said driving shaft having a first shaft end that is disposed to confront said deformable membrane, said driving shaft being driven by said motor body to move between a distal position, where said first shaft end is distal from said motor body, and a proximate position, where said first shaft end is proximate to said motor body;
• and
• a connection unit configured to couple said second shaft end with said deformable membrane and to permit said deformable membrane to be driven by said driving shaft to transform between the flat state, where said first shaft end is in one of the distal portion and the proximate portion, and the deformed state, where said first shaft end is in the other one of the distal position and the proximate position, such that a predetermined pressure is generated through said communication port when said deformable membrane is moved from one of the flat state and the deformed state to the other one of the flat state and the deformed state.