Inclination sensors

Diagnosis and serviceRemote maintenance and data memoryCAN interface and CAN diagnosisSystem descriptionCANcom / GPS – determining exact positionsGPS stands for “Global Positioning System”, i.e. for the worldwide determinationof a position. The system which was developed by the Americandefence ministry for military purposes for determining positions consists of anetwork of 24 satellites which circle the earth twice a day at a height ofabout 20,000 km. These satellites transmit their data worldwide and roundthe clock.A part of the GPS system can be used for civilian purposes. The GPS informationcan be received and processed free of charge in order to show a GPSuser his own position on the surface of the earth. By using an almanac integratedinto the GPS receiver (table of the satellite identifiers and the correspondingorbit) the GPS receiver continuously calculates the distance of theGPS user to the receiving satellite. On the basis of this the GPS unit determinesthe geographic position of the user. To ensure that this functionscorrectly the signals of at least three satellites are required. With signals offour satellites it is additionally possible to determine the current heightabove sea level. Further satellite signals increase the accuracy of the positioninformation. It is usually three to five metres.The CANcom / GPS is equipped with such a GPS receiver. The received positiondata can be further processed for position-dependent processes directlyin the control system. It is also possible to transmit the position via the GSMmodem together with other machine data, for example to a service centre.By means of GPSthe position ofmobile machinescan be determinedwith anaccuracy of3 metres.CANcom / GPS –detecting andcommunicatingpositionsworldwide.CANcomBy means of CANmemoperationaldata are storedcyclically on amemory card.CANmem – data storage in real timeInstead of transmitting machine data online they can also be stored locally. Thedata memory and logger CANmem enables fast and reliable storageof sporadic and cyclical data. They are stored on exchangeable and PCcompatiblememory cards (PCMCIA or SD card).When setting the device parameters the user determines the minimum timeintervals and format for data storage. Furthermore the memory managementcan be set. So the operating mode ring buffer enables continuous datastorage, for example, for black box systems in accident data recorders. Withlinear writing to the buffer, data can be stored up to the maximum size ofthe memory card. A “time stamp” is added and the data is evaluated lateron by means of a PC program (e.g. Excel spreadsheet).Visit our website: www.ifm.com90