On demand maintenance of computer devices
Original Publication Date: 2004-Dec-03
Included in the Prior Art Database: 2004-Dec-03
Automatic systems are replacing humans in many activities because of the fact they are cheaper, more reliable and available 7 days per week and 24 hours per day. ATM, automatic payment systems, electronic ticket machines are just some examples of those systems. Nevertheless, they need maintenance over time in order to guarantee their availability full time and high quality of service. Event-based monitoring systems are being used to inform operators about critical problems, if detected: missing cash, printer out of paper, and the like. In such cases, human intervention is required to recover the abnormal condition. There are also other maintenance activities, usually scheduled on time basis, which are being performed to prevent degradation of system quality (i.e. change the keyboard every year, substitute relays of the actuation system of a lift every six months, or change filters of an automatic coffee machine once a month). This last type of maintenance bases on usage statistics of the automatic system, which in some situations may be very unreliable because of external factors. In fact, if there is a peak (or a lack) of usage in a given time frame the system may miss (or receive useless) maintenance, leading to a quality of service degradation (or increased cost of ownership).