Shaoxing Keqiao car barrier [road gate]

The car barrier is also called the road gate, which is specially used for the access management equipment of restricting the driving of motor vehicles on the road. Now it is widely used in the road toll station and parking lot system to manage the vehicle access, which is used to manage the vehicle access. Xiamen large hand electric road gate can realize the landing pole by wireless remote control alone, or it can implement the automatic management state through the parking lot management system (i.e. IC card swiping management system), and the vehicles can be released after entering the site and taking the cards. When leaving the site, the vehicles can be released automatically after charging the parking fee.
Question:
I just can't understand what the function principle of the car stopper is and what makes it work like this?
Follow up:
It is mainly anti smashing. A device with foam rubber strip is installed under the large handlebar gate. The gate controller has built-in high-sensitivity rise priority and pressure resistance rebound function. There are three types of anti smashing functions: resistance anti smash, ground sense anti smash and infrared anti smash. Anti smash function in case of resistance. The intelligent resistance return device (adjustable sensitivity) is installed. If the rubber strip at the bottom of the road brake lever contacts with the vehicle or pedestrian and generates certain resistance during the falling process of the road brake lever, the intelligent resistance return device will quickly adjust the falling lever state to the rising lever state, and the road brake will quickly rise to avoid the occurrence of smashing the vehicle and people; the ground sense anti smashing function. Similar to the principle of the anti smashing function in case of resistance, if the ground sensor receives the trigger signal during the falling process of the gate rod, the gate controller will quickly change the falling rod state to the rising rod state, the gate will quickly rise and remain vertical state, and the gate will automatically fall after the ground sensor trigger disappears; infrared anti smashing function. There is an intelligent infrared anti smashing device installed in the gate controller. In the process of gate lowering, if the infrared anti smashing device is cut off, the gate rod will automatically turn to the rising rod state and quickly rise the rod, and keep the vertical state. When the infrared anti smashing device is normal, the gate rod will fall down.