A perception and planning system for operating an autonomous driving vehicle, the system comprising:
- a system frame to house one or more processors therein, wherein the one or more processors execute computer instructions to perceive a driving environment surrounding the autonomous driving vehicle (ADV), to plan a traj ectory based on the perceived driving environment, and to control the ADV according to the trajectory;
- one or more cooling fans mounted on a first side of the system frame to generate an airflow flowing outwardly to remove at least a portion of heat generated by the one or more processors;
- and
- an air filtering module mounted on a second side of the system frame to filter the airflow flowing inwardly to remove dust or contaminated material from the airflow, wherein the air filtering module comprises
- an air filter, wherein the air filter is separate from a cover plate,
- a mounting plate mounted onto the second side of the system frame to receive the air filter deposited thereon, wherein the mounting plate is modeled into a tray-like shape formed in an L-shape operated like a receiving well and container to receive the air filter, wherein one or more cross bars are disposed across a first edge and a second edge on the opposite side of the mounting plate, wherein the first edges and the second edge include one or more mounting holes, wherein the size of the receiving well is larger than the size of air filter, wherein a bottom cross brace of the mounting plate includes one or more mounting holes, wherein the mounting plate includes one or more magnets disposed thereon, wherein the bottom cross brace is indented from the cross bars at the bottom of the receiving well, wherein the one or more magnets comprises a first set of one or more magnets disposed on the first edge of the mounting plate and a second set of one or more magnets disposed on the second edge of the mounting plate, wherein the cover plate is made of metal to attract the one or more magnets disposed on the mounting plate to prevent the air filter from falling out, and
- the cover plate attached to the mounting plate by a magnetic force generated from the magnets to keep the air filter between the mounting plate and the cover plate, wherein the mounting plate is mounted onto the system frame using one or more screws.