BLOOD-PRESSURE SENSOR
0 Assignments
0 Petitions
Accused Products
Abstract
A blood-pressure sensor includes a substrate, a first electrode, a magnetization fixed layer, a nonmagnetic layer, a magnetization free layer, and a second electrode. The substrate is bent to generate a tensile stress at least in a first direction. The first electrode is provided on the substrate. The magnetization fixed layer has magnetization to be fixed in a second direction, and is provided on the substrate. The nonmagnetic layer is provided on the magnetization fixed layer. The magnetization free layer has a magnetization direction which is different from the first direction and from a direction perpendicular to the first direction. The second electrode is provided on the magnetization free layer.
5 Citations
12 Claims
-
1. (canceled)
-
2. A MEMS pressure sensor system comprising:
-
a MEMS pressure sensor including plural magnetoresistive elements configured to detect strain; an electronic device configured to transmit and receive first resistance change amounts and second resistance change amounts that are measured by the respective magnetoresistive elements, wherein the electronic device includes a calculation unit configured to calculate a difference between the first resistance change amount and the second resistance change amount, which are measured by each magnetoresistive element, a first controller configured to generate instruction information that controls to specify a magnetoresistive element measuring a maximum difference from among the plural magnetoresistive elements, and a first transmitter configured to transmit the instruction information to the MEMS pressure sensor. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A MEMS pressure sensor system comprising:
-
plural magnetoresistive elements configured to detect strain; an output module configured to output, to an external device, first resistance change amounts and second resistance change amounts that are measured by the plural magnetoresistive elements, respectively; a receiver configured to receive instruction information that is generated by and output from the external device, wherein in the external device, differences between the first resistance change amounts and the second resistance change amounts, which are output from the output module, are calculated, and the instruction information that controls to specify a magnetoresistive element measuring a maximum difference from among the plural magnetoresistive elements is generated and output and is received by the receiver.
-
-
12. A MEMS pressure sensor comprising:
-
plural magnetoresistive elements configured to detect strain; an output module configured to output, to an external device, first resistance change amounts and second resistance change amounts that are measured by the plural magnetoresistive elements, respectively; a receiver configured to receive instruction information that is generated by and output from the external device, wherein in the external device, differences between the first resistance change amounts and the second resistance change amounts, which are output from the output module, are calculated, and the instruction information that controls to specify a magnetoresistive element measuring a maximum difference from among the plural magnetoresistive elements is generated and output, and is received by the receiver.
-
Specification