Commercial car shock mitigation system

The utility model provides a commercial car shock mitigation system, including singlechip, alarm, pressure sensor, two displacement sensor, hydraulic shock absorber, hydraulic shock absorber is piston rod variable -length formula hydraulic shock absorber, including piston rod and first cavity, is equipped with the second cavity in the first cavity, and first cavity top is equipped with the motor, is equipped with the gear on the output shaft of motor, and the outside meshing of gear has a rack, and the rack lower extreme is connected with the piston rod upper end, and during lower end of the piston rod alternated income second cavity, second cavity lower extreme was equipped with the second go -between, establishes first go -between on the first cavity, two displacement sensor establish respectively on first go -between with the junction of first cavity with the second cavity, pressure sensor establishes the easy interference position at hydraulic shock absorber, pressure sensor and displacement sensor are co