Abstract: A management system for a work machine includes: a work machine that has a communication terminal device with a communication function, a power source supplying power to the communication terminal device, and a switch interposed between the power source and the communication terminal device; and a management device that is capable of communication with the communication terminal device and transmits to the communication terminal device a request instruction for execution of a process for enabling the communication, wherein the communication terminal device, upon receipt of the request instruction from the management device, continues to receive power supply from the power source until after a lapse of a predetermined period of time since the switch turns from the on position to the off position.

Abstract: A working machine includes: an operation state detection unit configured to detect a physical amount output according to an operation of an operation lever; a time integration unit configured to calculate a time integration value by performing time integration of the physical amount; a determination unit configured to cause the time integration value and a predetermined operating angle of an excavating and loading mechanism associated with the operation of the operation lever to correspond to each other, and to determine that the operation of the operation lever has been performed, at a time the time integration value becomes a predetermined integration value or more; and a counting unit configured to count number of times of a series of excavating and loading work.

Abstract: A working maching includes: an operation state detection unit configured to detect a physical amount output according to an operation of an operation lever; a time integration unit configured to calculate a time integration value by performing time integration of the physical amount; a determination unit configured to cause the time integration value and a predetermined operating angle of an excavating and loading mechanism associated with the operation of the operation lever to correspond to each other, and to determine that the operation of the operation lever has been performed, at a time the time integration value becomes a predetermined integration value or more; and a counting unit configured to count number of times of a series of excavating and loading work.