Operation data collection device for construction machines

摘要

Provided is an operation data collection device for construction machines that is capable of efficiently collecting operation data indicative of impending failure of a construction machine by reducing the amount of information to be collected and stored without degrading the quality of information used for maintenance. The device receives operation data containing values measured by a plurality of sensors, a value indicating the operating status and an operation data storage section. The device includes a normal reference value storage section that stores a normal reference value for each of the sensors generating the operation data, a deviation calculation section that calculates the deviation of each of the sensors from the normal reference value, and a stored sensor item extraction section that extracts sensor items of operation data to be stored in the operation data storage section in accordance with the calculated deviation of each sensor.

主权项

1. An operation data collection device for a construction machine, where the operation data collection device is mounted on the construction machine, the operation data collection device receives operation data containing a plurality of values indicative of an operating state of the construction machine and stores the operation data in an operation data storage section, the values being measured by a plurality of sensors of the construction machine, the operation data collection device comprising:
a normal reference value storage section that stores a plurality of normal reference values for each of the sensors generating the operation data; a deviation calculation section that calculates deviations of the respective values of the operation data generated by each of the sensors with relation to the respective normal reference values; and a stored sensor item extraction section that extracts and stores sensor items of the operation data in the operation data storage section according to the calculated deviations of the operation data for each of the sensors, wherein the stored sensor item extraction section compares the deviations of each of the sensors with relation to the normal reference values, sequentially selects the sensors from the sensor items in order from greatest deviation to smallest deviation, and stores information on the selected sensors in the operation data storage section, wherein the sensors are classified into a plurality of sensor assemblies in accordance with sensor properties of the sensors, wherein the deviation calculation section calculates a deviation aggregate of each of the sensor assemblies in accordance with the deviations of each of the sensors thereof, wherein the deviation calculation section includes a sensor item count determination threshold value storage section for storing sensor item count determination threshold value information indicative of a relationship between the deviation aggregate of each of the sensor assemblies and a number of the sensor items of operation data to be selected by the stored sensor item extraction section and stored in the operation data storage section, and wherein the stored sensor item extraction section determines the number of the sensor items of the operation data to be stored in the operation data storage section in accordance with the sensor item count determination threshold value information and the respective deviation aggregate of each of the sensor assemblies.