Relative-pressure sensor comprising a drying chamber

    公开(公告)号:US12038339B2

    公开(公告)日:2024-07-16

    申请号:US17756786

    申请日:2020-11-20

    IPC分类号: G01L19/06 G01L9/00 G01L13/02

    摘要: A relative-pressure sensor determines the pressure of a medium in relation to an atmospheric pressure. The sensor includes a housing having a measuring element located in the housing, wherein the pressure to be measured acts upon an outer surface of the measuring element. The surface is in contact with the medium. The sensor also includes a reference-pressure supply, which supplies an inner surface of the measuring element with atmospheric pressure in the form of ambient air, and an evaluation unit, which determines the pressure of the medium from a variable determined using the measuring element. A drying chamber takes-up atmospheric humidity from the ambient air that is supplied via the reference-pressure supply. The drying chamber has a drying module comprising a container and a humidity-adsorbing material that is completely surrounded by the container.

    SEMICONDUCTOR DEVICE AND ELECTRONIC APPARATUS

    公开(公告)号:US20230296463A1

    公开(公告)日:2023-09-21

    申请号:US18136952

    申请日:2023-04-20

    发明人: Yoshihiro YOSHIDA

    IPC分类号: G01L19/00 G01L9/00

    CPC分类号: G01L19/0038 G01L9/0041

    摘要: A semiconductor device includes a detector mounted on a base substrate and including a pressure detector to detect pressure, a base portion on the base substrate where the detector is buried, a protruding portion protruding upward from the base portion and including an exposure hole which causes the pressure detector to be exposed upward, and a lid supported by an upper surface of the protruding portion to close the exposure hole. An outer circumferential portion of the lid extends outward from the protruding portion in plan view. The lid includes a slit that is open to an outer side surface and causes the exposure hole to communicate with outside sideward of the semiconductor device.

    Systems and methods for pressure sensor assembly including improved encapsulation material

    公开(公告)号:US11719589B2

    公开(公告)日:2023-08-08

    申请号:US17420588

    申请日:2019-12-19

    IPC分类号: G01L19/14 G01L9/00 G01L23/24

    摘要: A pressure sensor assembly includes an external housing unit; a sensor unit received within the external housing unit, the external housing unit has an external surface including a mounting surface; a sensing element mounted within the sensor unit and including a pressure-sensing surface; a substrate upon which the mounting surface is mounted; an air passage to enable air to impinge on the sensing element; and a filling passage, separate from the air flow passage, for the introduction of an encapsulation material onto the sensor unit, during assembly. The encapsulation material covers at least a part of the external surface of the sensor unit but does not cover the pressure-sensing surface of the sensing element which remains directly exposed to air within the air passage.

    WIRELESS LIQUID GAUGING SYSTEM
    6.
    发明申请

    公开(公告)号:US20190162574A1

    公开(公告)日:2019-05-30

    申请号:US15826481

    申请日:2017-11-29

    发明人: Mark Bellinger

    摘要: A wireless pressure sensor for sensing pressure of a liquid in a tank includes a hermetically sealed housing, at least one sensor, at least one photocell array, at least one communication device, and at least one energy storage device. At least a portion of the hermetically sealed housing has a diaphragm. The at least one sensor within the hermetically sealed housing is configured to sense the pressure of the liquid. The at least one photocell array is configured to receive light and generate power from the light. The at least one communication device is configured to transmit data corresponding to the sensed pressure using wireless radio frequency signals. The at least one energy storage device is configured to store power generated by the at least one photocell array and provide power to the at least one sensor and the at least one communication device.

    Pressure sensor
    7.
    发明授权

    公开(公告)号:US10082435B2

    公开(公告)日:2018-09-25

    申请号:US14742453

    申请日:2015-06-17

    IPC分类号: G01L9/00 G01L9/16

    摘要: A pressure sensor according to an embodiment includes: a support member; a membrane supported by the support and having flexibility; and a strain detection element formed on the membrane. The strain detection element includes a first magnetic layer formed on the membrane and having a magnetization, a second magnetic layer having a magnetization, and an intermediate layer formed between the first magnetic layer and the second magnetic layer. A direction of at least one of the magnetization of the first magnetic layer and the magnetization of the second magnetic layer changes relatively to that of the other depending on a strain of the membrane. Moreover, the membrane includes an oxide layer that includes aluminum.