A system for determining hang time for a machine operating at a worksite is provided. The system includes a sensing module associated with the machine. The sensing module is configured to track at least one parameter associated with the machine. The at least one parameter includes a machine heading, a machine speed, or a machine location. The system also includes a control module communicably coupled to the sensing module. The control module is configured to receive tracked information corresponding to the at least one parameter from the sensing module. The control module is also configured to analyze the tracked information corresponding to the at least one parameter, based on the received tracked information. The control module is further configured to determine the hang time for the machine, based on the analysis.

A control method for a work machine, includes: detecting a posture of a working unit driven by a hydraulic cylinder in a movable range; determining whether the working unit at a stop position of the movable range has started moving based on an operation of the working unit; setting a deceleration section including an end position of the movable range and a deceleration ratio of the working unit in the deceleration section, based on the posture of the working unit in a stopped state at the stop position, and a threshold determined in advance; and outputting a command signal to a control valve, which is capable of adjusting an amount of a working oil supplied to the hydraulic cylinder, such that the working unit moves from the stop position to the end position based on the deceleration section and the deceleration ratio.

A management server for a working machine, including: a reception unit that receives a sensor output from a working machine; a regular report creation unit that creates, for each predetermined period of time, a regular report indicating an operation state of the working machine within the predetermined period of time based on the sensor output; an emergency report creation unit that creates at least one emergency report upon detecting abnormality data representing abnormality of the working machine based on the sensor output; an important report creation unit that creates an important report upon detecting predictive data indicating a sign of the abnormality based on the sensor output; and a delivery unit that delivers the regular report, the at least one emergency report, and the important report, respectively, to a regular report delivery target, an emergency report delivery target, and an important report delivery target.

A system for setting a dump height of a work implement includes a linkage assembly and a linkage position sensor. In one embodiment, a controller stores an identifying code corresponding to the dump body, stores a desired dump height, associates the desired dump height with the identifying code, and subsequently receives the identifying code. In another embodiment, the controller stores a plurality of linkage positions corresponding to a plurality of desired dump heights, receives data indicative of a minimum lifting height of the dump body, and determines a desired dump height at which the linkage assembly is to be positioned. In both embodiments, the controller generates a command to position the linkage assembly at the desired dump height and generates a command to dump material within the material engaging work implement into the dump body.

A slewing-type working machine includes: a slewing motor which is a hydraulic motor for slewing; a variable-displacement hydraulic pump; a slewing operation device including an operation member; a control valve controlling the slewing motor based on an operation signal thereof; a pump regulator; a relief valve letting excess fluid to a tank; operation detectors detecting an operation direction and amount of the operation member; a motor rotational speed detector; and a controller controlling a discharge flow rate of the hydraulic pump. The controller obtains a deviation between a target rotational speed of the slewing motor obtained from a slewing operation amount and an actual rotational speed detected by the motor rotational speed detector, and controls the discharge flow rate to make the deviation closer to 0.

There are provided a position calculator that determines a position of working equipment included in a work machine, a display that displays a route image corresponding to a route through which the working equipment moves, and a display processor that causes, on the basis of a position of the route and a position of the working equipment determined by the position calculator, the display to display the route image corresponding to a portion of the route that is shielded by the working equipment with a predetermined position serving as a viewpoint in a form different from the route image corresponding to a portion of the route that is not shielded by the working equipment.

A Sensor network system (10) with a plurality of sensor devices (12_1 12_5), each comprising: a detection unit (16, 18) for detecting a physical quantity and for providing a corresponding measurement signal, a computing unit (20) for processing the measurement signal and for providing measurement data (M_1-M_5) which is based on the measurement signal, and a data interface (22) via which output data (A_1-A_5) can be read out, is known.

In order to provide an efficient sensor network system (10), according to the present invention, a central evaluation unit (24) is provided, which is configured to: determine individual output data (A_1-A_5) for the at least two sensor devices (12_1-12_5) based on the measurement data (M_1-M_5) of at least two of the sensor devices (12) via a central evaluation algorithm, and provide the determined output data (A_1-A_5) to the respective sensor device (12_1-12_5).

A calibration device for a work machine includes: a measurement value acquiring unit acquiring respective measurement values of a first actuation unit and a bucket measured using an external measurement device; a working equipment parameter acquiring unit acquiring working equipment parameters of the member of the first actuation unit and the bucket; a calibration unit calibrating the working equipment parameters of the member of the first actuation unit and the bucket based on the measurement value of a reference point of the bucket acquired by the measurement value acquiring unit; and a calibration range selecting unit selecting, from among a first range where a variation in a swing angle of the bucket has a predetermined relationship with a change in swing angle information of the bucket and a second range where a variation in the swing angle increases as compared with the variation in the first range.