Patent ID: 9506795
Filing Date: 2016-11-29
CPC Classification: G01F

Claim Text:
1. A wireless tank monitoring system for monitoring the level of fluid in a plurality of tanks and reporting the level of fluid in each of the plurality of tanks to a data collection center at a remote location, the monitoring system comprising: a level sensor mounted in each of the plurality of the tanks for sensing the level of a fluid in the corresponding tank; a processor having a normal sleep mode and an awake mode, and connected to the level sensor for generating, when awake, data packets representative of the level of a fluid in the corresponding tank at a given time as determined by the level sensor; a transmitter connected to a processor in at least one of the plurality of tanks and configured to receive data packets from another of the plurality of tanks representative of the level of fluid in another of the plurality of tanks and to transmit the data packets from the processor in the corresponding tank and the data packets in the another of the plurality of tanks to the data collection center in a singe data transmission; a timer connected to the processor and configured to change the mode of the processor to an awake mode at a predetermined frequency to generate data packets representative of the level of fluid in the tank; at least one limit sensor connected to the processor, mounted to the tank and configured to detect and communicate to the processor a rise of the liquid level in the tank above an upper predetermined level or a fall of the liquid level in the tank below a lower predetermined level; and wherein the processor is programmed to change to the frequency of the awake mode of the processor in response to a communication from the at last one limit sensor that the level of liquid in the tank is either above the upper predetermined level or below the lower predetermined level.