In this research laboratory, we are doing research on the interface, that is, the I/O part, which is the connection of the construction equipment and the operator. Operators of construction equipment need to make instant changes in the operation by receiving visual information and other information including the inclination and the sound of the construction equipment and recognize and judge such information comprehensively. In addition, complicated operations of levers, pedals and buttons etc. are required at the same time. Therefore, we believe that the performance of the entire equipment including the operator can be improved by feeding back information about human perception characteristics and creating on operation system based on human motion characteristics. Specifically, we are working on themes such as proper feedback information in remote control of excavators using simulators and VR systems.