Control system for construction machine and control method for construction machine

A control system for a construction machine, comprising:

• a tilt sensor for detecting an inclination angle of the construction machine parked on a slope;
• a door latch device including a lock/unlock actuator configured to lock/unlock a door of the construction machine according to a door lock control signal and a door unlock control signal, and a release actuator configured to release the door according to a door release control signal;
• and
• a smart key module configured to output the door unlock control signal and the door release control signal when the inclination angle of the construction machine is within a preset safe range when an unlocking event signal is detected while a smart key is recognized, wherein the lock/unlock actuator unlocks the door of the construction machine and the release actuator releases the door of the construction machine and wherein the door is configured to open in response to a driver of the construction machine pulling a door lever of the door;
• and
• a door switch installed under a hinge of a cabin of the construction machine, the door switch configured to output a door release detection signal to the smart key module when the door is in the released state,
• wherein the smart key module outputs the door unlock control signal to the lock/unlock actuator and the lock/unlock actuator unlocks the door of the construction machine when the inclination angle of the construction machine is out of the preset safety range and an unlocking event signal is detected while a smart key is recognized and wherein the door is configured to release in response to the driver of the construction machine rotating the door lever and to open in response to the driver of the construction machine pulling the door lever,
• wherein the unlocking event signal is generated by the driver of the construction machine operating an unlocking switch, wherein the unlocking switch generates the unlocking event signal, and wherein the unlocking switch is installed at a position lower than the door, and
• wherein the smart key module outputs an ACC signal for entering an ACC mode to a power supply when the smart key module receives the door release detection signal.