EP4348206A1 - Messgerät zum bestimmen und/oder überwachen zumindest einer physikalischen und/oder chemischen messgrösse - Google Patents
Messgerät zum bestimmen und/oder überwachen zumindest einer physikalischen und/oder chemischen messgrösseInfo
- Publication number
- EP4348206A1 EP4348206A1 EP22729603.5A EP22729603A EP4348206A1 EP 4348206 A1 EP4348206 A1 EP 4348206A1 EP 22729603 A EP22729603 A EP 22729603A EP 4348206 A1 EP4348206 A1 EP 4348206A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor element
- measuring
- contact surfaces
- measuring device
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/65—Shapes or dispositions of interconnections
- H10W70/654—Top-view layouts
- H10W70/655—Fan-out layouts
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/753—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between laterally-adjacent chips
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/754—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked insulating package substrate, interposer or RDL
Definitions
- Measuring device for determining and/or monitoring at least one physical and/or chemical parameter
- the invention relates to a measuring device for determining and/or monitoring at least one physical and/or chemical parameter.
- Measuring devices determine and/or monitor a measured variable from which a process variable is determined.
- measuring devices are to be understood as a component of a field device in process and automation technology, which is used to monitor and/or determine at least one, for example chemical and/or physical, process variable of a medium.
- a large number of such field devices are manufactured and sold by companies in the Endress+Flauser Group.
- the process variable to be determined by the field device can be the level, the flow, the pressure, the temperature, the pFI value, a redox potential or the conductivity of the respective medium.
- Field devices for measuring the filling level are designed in particular as microwave filling level measuring devices, ultrasonic filling level measuring devices, time-domain reflectometric filling level measuring devices (TDR), radiometric filling level measuring devices, capacitive filling level measuring devices, conductive filling level measuring devices and vibronic filling level measuring devices.
- Field devices for measuring the flow on the other hand, work, for example, according to the Coriolis, ultrasonic, vortex, thermal and/or magnetically inductive measuring principle.
- Pressure gauges are preferably so-called absolute,
- Pressure measuring devices have, for example, a measuring device for determining a pressure-dependent capacitance, which is ultimately used to determine the pressure of the medium.
- measuring devices include a sensor element which, by means of an electrical converter, generates a measured variable-dependent electrical Provides primary signal, and on-site electronics, which is provided for processing the electrical primary signals and the operation of the electrical converter.
- An electronics unit is typically connected to the on-site electronics, which is responsible for, among other things, the power supply, the further processing of an electrical secondary signal received from the on-site electronics and/or the operation of interfaces.
- the on-site electronics are usually connected to the electronics unit using a plug.
- Patent application DE 10 2019 104 841 A1 describes a pressure sensor element with on-site electronics designed as a system-in-package.
- System-in-package processes are demanding manufacturing processes that take place in the clean room and, compared to conventional printed circuit boards, work with thinner substrates as the carrier material for the components to be arranged on them.
- the housing is applied to the measuring and operating circuit using an injection molding process and is made of plastic.
- the thermal expansion coefficients of the pressure sensor element and the on-site electronics must be matched to one another, since otherwise thermo-mechanical stress and hysteresis can easily occur in the pressure sensor element.
- the on-site electronics is a relatively small component, so that only little space is available for attaching a connector.
- the correspondingly small connector is therefore difficult to use.
- conventional plugs which create a connection to a circuit board, for example, are only designed for temperatures up to approx. 100°C, whereas measuring devices are often exposed to significantly higher temperatures, e.g. up to 200°C. Temperatures of up to 150°C also occur in the electronics area of the measuring device.
- a measuring device which is designed for higher temperatures. Higher temperatures are in particular temperatures up to approx. 150°C.
- the object on which the invention is based is achieved by a measuring device for determining and/or monitoring at least one physical and/or chemical measured variable
- the sensor element has an electrical converter for providing measured variable-dependent electrical primary signals and a sensor body with at least one metalized surface section,
- On-site electronics with a housing and a measuring and operating circuit arranged in an interior of the housing for operating the electrical converter and for processing the primary signals, wherein a first surface of the on-site electronics has a plurality of first contact surfaces, which are mechanically and electrically connected to the at least one metalized surface section of the sensor element, with a second surface of the on-site electronics having a plurality of second contact surfaces, and
- a printed circuit board which has a plurality of third contact surfaces in a first region, the printed circuit board being mechanically and electrically connected to the on-site electronics by means of the second contact surfaces and the third contact surfaces.
- the measuring device avoids the connector and the problems associated with it by connecting the printed circuit board to the on-site electronics without an intermediate element.
- the on-site electronics are equipped with the first and second contact surfaces on the, in particular opposite, first and second surfaces.
- the on-site electronics are generally first connected to the sensor element, for example soldered, before the printed circuit board is soldered to the on-site electronics in a later step.
- the plurality of first, second and third contact areas are designed as metalized areas on a respective area of the respective component.
- the multiple contact surfaces can be two or more—sometimes also a large number of—contact surfaces.
- the printed circuit board is used, for example, to supply energy to the on-site electronics and/or to process secondary electrical signals which are generated during the processing of the primary electrical signals and are transmitted by the on-site electronics.
- the printed circuit board is advantageously designed as a flexible printed circuit board.
- the first contact areas and the second contact areas are designed as a QFN, LGA, DFN or BGA arrangement.
- the third contact areas of the printed circuit board are preferably designed to correspond to the second contact areas of the on-site electronics.
- QFN Quad Flat No Leads
- LGA Land Grid Array
- DFN Double Flat No-Lead
- the contact surfaces are integrated flat on the surface of the respective printed circuit board or housing.
- BGA Ball Grid Array
- solder paste must first be applied to at least part of the contact surfaces.
- the sensor element is a pressure sensor element.
- the pressure sensor element has a base body and a measuring membrane connected to the base body, including a pressure chamber.
- the pressure sensor element is generally so sensitive that even small deviations in the thermal expansion coefficients of the pressure sensor element and/or elements connected to the pressure sensor element lead to thermomechanical stresses and subsequently to hysteresis in the pressure signal. This applies not only to the joints in question between the pressure sensor element and the on-site electronics, but also to the on-site electronics itself.
- the pressure sensor element is made, for example, from a ceramic, in particular corundum, which has a low coefficient of thermal expansion.
- the pressure sensor element comprises a capacitive transducer, which has at least one first electrode arranged on the measuring membrane and at least one second electrode arranged on the base body, which face each other, the capacitance between the first electrode and the second electrode being dependent on the pressure depends on the measuring membrane, wherein at least the second electrode is connected to the measuring and operating circuit via at least one passage through the base body.
- the on-site electronics can preferably be produced in a system-in-package process. Details on the system-in-package method can also be found in the introduction to this application.
- the measuring and operating circuit has at least one integrated circuit and at least one passive element.
- the on-site electronics thus represent a complex, integrated component.
- the coefficient of thermal expansion of the on-site electronics is adapted to the coefficient of thermal expansion of the sensor element, so that the on-site electronics and the Sensor element have a substantially matching coefficient of thermal expansion.
- FIGS. 1-2 They show:
- the measuring device 1 according to the invention can be used for a large number of field devices, such as pressure and level measuring devices, among others.
- the following figures show the measuring device 1 according to the invention as an example in connection with a pressure sensor element 2.
- the pressure sensor element 2 comprises a base body 11, which corresponds to the sensor body 4, and a measuring membrane 12.
- Measuring membrane 12 and base body 11 are connected by means of a joint 15, including a pressure chamber 20, and each have a first electrode 13a and at least a second electrode on facing surfaces Electrode 13b, which form the electrical converter 3, or in the case of the pressure sensor element 2, a capacitive converter 3.
- the electrical converter 3 is used to provide measured variable-dependent primary electrical signals.
- a first pressure p acts on the measuring membrane 12, with a second pressure optionally being able to be fed through the pressure supply 17 into the pressure chamber in the case of a reference or differential pressure measuring device.
- a pressure-dependent deflection of the measuring membrane 12 affects the capacitance between the two electrodes 13a, 13b.
- At least the second electrode 13b is connected to the metallized surface section 5 of the base body 11 via a feedthrough 14 and to the measuring and operating circuit 8 above it.
- the on-site electronics 6 includes a housing 7 in which a measuring and operating circuit 8 is arranged, which operates the electrical converter 3 and processes the electrical primary signals.
- a plurality of first contact surfaces 9a and a plurality of second contact surfaces 9b are arranged on the first surface 6a and on a second surface 6b of the on-site electronics 6 that is opposite it, for example.
- the first surface 6a and the second surface 6b can also be arranged adjacent to or perpendicular to one another.
- the first contact areas 9a and the second contact areas 9b are designed, for example, as a QFN, LGA, DFN or BGA arrangement. In the example shown in FIG. 1 , the first contact areas 9a are soldered to the metallized surface section 5 via solder balls 16 .
- the on-site electronics 6 can optionally be produced using a system-in-package method.
- a substrate 21, for example, is arranged in the region of the plurality of first contact areas 9a, on which the components of the measuring and operating circuit 8 are applied.
- the components of the measuring and operating circuit 8 are electrically connected to one another.
- This is represented by connection 18. 2 shows an example of the measuring device 1 according to the invention.
- the measuring device 1 includes a printed circuit board 10.
- a plurality of third contact surfaces 9c are arranged in a first region 10a of the printed circuit board 10, which are soldered to the plurality of second contact surfaces 9b and thus provide a mechanical and electrical Connection between the circuit board 10 and the on-site
- the printed circuit board 10 is designed to be flexible, for example.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021113914.7A DE102021113914A1 (de) | 2021-05-28 | 2021-05-28 | Messgerät zum Bestimmen und/oder Überwachen zumindest einer physikalischen und/oder chemischen Messgröße |
| PCT/EP2022/063466 WO2022248313A1 (de) | 2021-05-28 | 2022-05-18 | Messgerät zum bestimmen und/oder überwachen zumindest einer physikalischen und/oder chemischen messgrösse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4348206A1 true EP4348206A1 (de) | 2024-04-10 |
Family
ID=82020029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22729603.5A Withdrawn EP4348206A1 (de) | 2021-05-28 | 2022-05-18 | Messgerät zum bestimmen und/oder überwachen zumindest einer physikalischen und/oder chemischen messgrösse |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240377272A1 (de) |
| EP (1) | EP4348206A1 (de) |
| CN (1) | CN117321400A (de) |
| DE (1) | DE102021113914A1 (de) |
| WO (1) | WO2022248313A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024104488A1 (de) * | 2024-02-19 | 2025-08-21 | Endress+Hauser SE+Co. KG | Verfahren zur Herstellung eines Drucksensors zur Bestimmung und/oder Überwachung eines Drucks eines Mediums und Drucksensor |
| DE102024130101A1 (de) * | 2024-10-16 | 2026-04-16 | Endress+Hauser SE+Co. KG | Drucksensor zur Bestimmung und/oder Überwachung eines Drucks eines Mediums |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3702062B2 (ja) * | 1997-02-18 | 2005-10-05 | 株式会社フジクラ | 圧力センサ装置 |
| JP2007502416A (ja) * | 2003-08-11 | 2007-02-08 | アナログ デバイシーズ インク | 容量型センサ |
| US20070158826A1 (en) * | 2005-12-27 | 2007-07-12 | Yamaha Corporation | Semiconductor device |
| DE102006012600A1 (de) | 2006-03-18 | 2007-09-20 | Atmel Germany Gmbh | Elektronisches Bauelement, elektronische Baugruppe sowie Verfahren zur Herstellung einer elektronischen Baugruppe |
| DE102012209235B4 (de) * | 2012-05-31 | 2023-08-10 | Robert Bosch Gmbh | Sensormodul mit zwei mikromechanischen Sensorelementen |
| US9527723B2 (en) * | 2014-03-13 | 2016-12-27 | STATS ChipPAC Pte. Ltd. | Semiconductor device and method of forming microelectromechanical systems (MEMS) package |
| US9820373B2 (en) * | 2014-06-26 | 2017-11-14 | Apple Inc. | Thermal solutions for system-in-package assemblies in portable electronic devices |
| US9952111B2 (en) | 2015-04-15 | 2018-04-24 | Infineon Technologies Ag | System and method for a packaged MEMS device |
| ITUB20160759A1 (it) | 2016-02-15 | 2017-08-15 | St Microelectronics Srl | Sensore di pressione incapsulato in materiale elastomerico, e sistema includente il sensore di pressione |
| US10161908B2 (en) * | 2016-03-24 | 2018-12-25 | Infineon Technologies Ag | Apparatus for determining a characteristic of a fluid having a device configured to measure a hydrodynamic pressure of the fluid |
| EP3261366B1 (de) * | 2016-06-21 | 2021-09-22 | Sciosense B.V. | Mikrofon- und drucksensorverpackung sowie verfahren zur herstellung des mikrofons und der drucksensorverpackung |
| EP3456682B1 (de) * | 2017-09-15 | 2023-09-13 | TE Connectivity Solutions GmbH | Sensorsystem, sensoranordnung und montageverfahren mittels lötmittel zum abdichten |
| US10787361B2 (en) | 2018-10-30 | 2020-09-29 | Nxp Usa, Inc. | Sensor device with flip-chip die and interposer |
| DE102019104841A1 (de) | 2019-02-26 | 2020-08-27 | Endress+Hauser SE+Co. KG | Messgerät mit einem Sensorelement und einer Mess- und Betriebsschaltung |
-
2021
- 2021-05-28 DE DE102021113914.7A patent/DE102021113914A1/de active Pending
-
2022
- 2022-05-18 US US18/564,644 patent/US20240377272A1/en active Pending
- 2022-05-18 CN CN202280034998.XA patent/CN117321400A/zh active Pending
- 2022-05-18 EP EP22729603.5A patent/EP4348206A1/de not_active Withdrawn
- 2022-05-18 WO PCT/EP2022/063466 patent/WO2022248313A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| ANONYMOUS: "MS5837-30BA Ultra Small Gel Filled Pressure Sensor", 23 May 2017 (2017-05-23), XP093268069, Retrieved from the Internet <URL:https://web.archive.org/web/20170523172914/https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Data+Sheet%7FMS5837-30BA%7FB1%7Fpdf%7FEnglish%7FENG_DS_MS5837-30BA_B1.pdf%7FCAT-BLPS0017> * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20240377272A1 (en) | 2024-11-14 |
| DE102021113914A1 (de) | 2022-12-01 |
| CN117321400A (zh) | 2023-12-29 |
| WO2022248313A1 (de) | 2022-12-01 |
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