The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2024
Filed:
Feb. 26, 2020
Multidimension Technology Co., Ltd., Zhangjiagang, CN;
James Geza Deak, Zhangjiagang, CN;
Elamparithi Visvanathan, Zhangjiagang, CN;
MultiDimension Technology Co., Ltd., Zhangjiagang, CN;
Abstract
A digital liquid level sensor based on a magnetoresistive sensor cross-point array includes tunnel magnetoresistance (TMR) magnetic sensor chips; a microcontroller electrically connected to a row decoder and a column decoder. The TMR magnetic sensor chips include magnetic tunnel junction (MTJ) elements. Diodes are connected between each row of MTJ elements and a row lead or a column lead. The TMR magnetic sensor chips are addressed using data decoded by the row decoder and the column decoder. The microcontroller is used for scanning addresses of the TMR magnetic sensor chips for the address of an MTJ element in the highest active state, converting the address value into a liquid level value in a linear proportional relationship therewith, and transmitting the liquid level value to an output interface. The power consumption of a sensor element is greatly minimized by powering only one sensor chip element each time.