Patent number 8650949 is assigned to
The following quote was obtained by the news editors from the background information supplied by the inventors: "The present invention relates generally to pressure sensor communication systems and more specifically it relates to a liquid level sensor frequency output system for efficiently communicating a liquid level with reduced power and increased accuracy.
"Any discussion of the related art throughout the specification should in no way be considered as an admission that such related art is widely known or forms part of common general knowledge in the field.
"Fluid pressure transducers are utilized to measure fluid pressure to determine the fluid depth, fluid level, and other variables related to the fluid. Fluid pressure transducers are typically comprised of a pressure transducer that converts the fluid pressure to a direct current (DC) signal that can be utilized to provide a level measurement of fluid in a tank (e.g. septic tank), pumping chamber or other fluid tank. The DC electrical signal can be used to provide a measurement reading, provide a warning, activate a pump or perform other actions based on the measurement. The pressure transducer can be in communication with any external device such as but not limited to a pump controller, a circuit board, a display, a warning device and the like.
"One problem with conventional pressure level DC signals is that they require a significant amount of power. Another problem with conventional pressure level DC signals is they are prone to providing inaccurate readings due to external electrical noise or signal. A further problem with conventional pressure level DC signals is that they require costly and sensitive electronics for the transmitter and the receiver.
"Because of the inherent problems with the related art, there is a need for a new and improved liquid level sensor frequency output system for efficiently communicating a liquid level with reduced power and increased accuracy."
In addition to the background information obtained for this patent, VerticalNews journalists also obtained the inventors' summary information for this patent: "A system for efficiently communicating a liquid level with reduced power and increased accuracy. The invention generally relates to a pressure sensor communication system which includes a sensor that determines a liquid level, a transmitter in communication with the sensor that converts the level data to a signal having a frequency representing the liquid level, and a receiver that receives the signal, wherein the receiver calculates the liquid level based on the frequency of the signal. The calculated liquid level by the receiver can be transmitted to an output device such as a display, switch, warning system or pump.
"There has thus been outlined, rather broadly, some of the features of the invention in order that the detailed description thereof may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and that will form the subject matter of the claims appended hereto. In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction or to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of the description and should not be regarded as limiting."
URL and more information on this patent, see: Ostlie, Mark R.; Calkins, Lou R.. Liquid Level Sensor Frequency Output System. U.S. Patent Number 8650949, filed
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