Method for operating a sensor in a multisensor system, especially in a field device in the form of a measuring device for process automation technology, and sensor for performing the method

摘要

A method for operating a sensor in a multisensor system, especially in a field device in the form of a measuring device for process automation technology, wherein data output from the sensor are evaluated by the measuring device connected with the sensor and the measuring device supplies the sensor with energy. In order reliably to limit production of lost heat in a measuring device to a certain value and, in spite of this, to be able to connect a number of sensors with different energy requirements to a measuring device, before a startup of the sensor, it is checked whether, with startup of the sensor, a maximum consumption of electrical energy of the measuring device would be exceeded.

主权项

1. A method for operating a sensor in a multisensor system, especially in a field device in the form of a measuring device for process automation technology, comprising the steps of:
evaluating data output from the sensor by the measuring device connected with the sensor; supplying energy with the measuring device to the sensor; before start-up of the sensor, it is checked whether, with start-up of the sensor, a maximum consumption of electrical energy of the measuring device would be exceeded; ascertaining, before start-up of the sensor, the energy consumption of all electrical assemblies operated in the measuring device; and comparing the energy consumption ascertained, including the energy consumption for the sensor to be placed in operation, with the maximal energy consumption of the measuring device, wherein: in the case of a subceeding or equaling of the maximal energy consumption, the sensor is placed in operation; and a cleaning phase of the sensor occurs after start-up of the sensor.