Information acquisition system

A construction planning simulation system for construction using a crane for acquiring information about possibility of interference between an external object and an attachment of the crane and a suspended cargo suspended by the attachment, the crane having a lower travel body, an upper turning body, and the attachment that is supported by the upper turning body for suspending the cargo and that extends outward so as to allow derricking, comprising:

• at least one processor comprising circuitry configured to:
• receive first data, as a first input to the at least one processor, the first data including masses of the attachment and the suspended cargo;
• receive second data, as a second input to the at least one processor, the second data including information about a change in posture of the attachment over prescribed time as second input;
• model, via the circuitry, a 3 dimensional model of the crane based on the first input and the second input and estimate a position of the attachment and the suspended cargo for the prescribed time, based on the 3 dimensional model of the crane;
• and
• compute, via the circuitry, the possibility of interference between the external object and the attachment and the suspended cargo, based on the estimated position of the attachment and the suspended cargo,
• the information about the posture includes a derricking angle of the attachment, and
• the position of the attachment and the suspended cargo is estimated based on the derricking angle,
• wherein the at least one processor is configured to control a movement of the crane to follow a carrying route of the suspended cargo from the 3 dimensional model generated by the circuitry to prevent the suspended cargo from contacting the external object during the movement.