Remote monitoring of probes determining physical, chemical or other variables

摘要

The method includes initial programming of the individual addresses of the probes by using a monitoring unit to transmit an activating wave whose energy level is steadily raised w.r.t. to time. The nearest or the most favourable positioned of a number of probes will respond after detecting the activation wave, by sending a response wave. The response wave sent by the probe after running an internal test procedure that includes the level of the received activation wave, is of the same form as the activation wave and is sent after a stepped, increasing delay period of random shift direction. The monitoring unit individualises the probe by sending an unique address to the probe which stores it in its memory. After the initialisation the probes can be accessed by the monitoring unit through their addresses. In case of a collision of response waves sent by two probes simultaneously the monitoring unit has to be relocated, and the initialisation restarted.