EP4500136A1 - Druckmessmodul für eine pneumatische einrichtung eines fahrzeugs - Google Patents
Druckmessmodul für eine pneumatische einrichtung eines fahrzeugsInfo
- Publication number
- EP4500136A1 EP4500136A1 EP23707293.9A EP23707293A EP4500136A1 EP 4500136 A1 EP4500136 A1 EP 4500136A1 EP 23707293 A EP23707293 A EP 23707293A EP 4500136 A1 EP4500136 A1 EP 4500136A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pneumatic
- carrier
- electrical
- pressure
- interface
- 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.)
- Pending
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
- G01L19/0007—Fluidic connecting means
- G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge
-
- 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
- G01L19/142—Multiple part housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- 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
- G01L19/0007—Fluidic connecting means
- G01L19/0038—Fluidic connecting means being part of the housing
-
- 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
- G01L19/0084—Electrical connection means to the outside of the housing
-
- 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
- G01L19/141—Monolithic housings, e.g. molded or one-piece housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
- G01L9/0052—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of piezoresistive elements
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
Definitions
- the invention relates to a pressure measuring module for a pneumatic device of a vehicle, with a pressure sensor, with a mechanical interface, by means of which the pressure sensor can be mechanically connected to the pneumatic device directly or indirectly, with a pneumatic interface, via which a pneumatic pressure is determined by means of the pressure sensor pneumatic device can be detected, and with an electrical interface, by means of which an electrical pressure measurement signal generated by the pressure sensor can be forwarded via the detected pneumatic pressure.
- the invention also relates to a pneumatic device of a vehicle with such a pressure measuring module.
- Pneumatic pressure sensors are used in compressed air systems of vehicles, for example in commercial vehicles with air suspension systems, pneumatic braking systems and/or pneumatically switchable automated gearboxes, for monitoring and pneumatically actuating these systems.
- the automated manual transmission, associated friction clutches and, if necessary, a transmission brake can often be actuated by means of an electro-pneumatic switching device.
- the selection and switching processes in the manual transmission itself then take place via pneumatic selection and switching actuators that work in two directions.
- One or more pneumatic pressure sensors are required to control such electro-pneumatic switching devices.
- Electro-pneumatic switching devices in commercial vehicles are known in various structural designs with different types of contact technologies for the mechanical and functional connection of pressure sensors, for example via cable connections, flex film connections or circuit board connections.
- the different types of common contact techniques require a pressure sensor that is adapted to each. They often come with special tools Assembly required. This results in high costs.
- replacing a pressure sensor once installed is not easily possible or involves considerable effort, which is judged to be unfavorable.
- the pressure sensors used here are available on the market as pressure measuring devices for pneumatic pressure measurements in various versions. Due to their compact design and their sensitive response, they are particularly advantageous for use and integration in a pressure measurement module according to the invention.
- the pressure sensor is attached to the carrier in an exchangeable manner as a module part.
- the mechanical connection between the pressure sensor and the carrier can be achieved, for example, by latching, particularly if vibration-free or low-vibration operation can be assumed.
- the invention also relates to a pneumatic device of a vehicle, which is used to operate switching actuators and/or selector actuators of an automated manual transmission, with an electro-pneumatic switching device and with a pressure measuring module for detecting a pneumatic pressure of the switching device, the pressure measuring module being constructed according to one of the device claims , as well as a vehicle, such as a commercial vehicle or passenger car dare, the pressure measuring module being constructed according to one of the device claims.
- FIG. 1 shows a perspective view of a pressure measuring module according to the invention obliquely from above
- FIG. 2 is a perspective view of the pressure measurement module according to FIG. 1 from below
- FIG. 3 is a perspective side view of the pressure measurement module according to FIG. 1
- FIG. 4 is a view of the pressure measurement module in an axial section
- FIG. 5 shows a partial perspective view of the pressure measuring module with an axial section
- FIG. 6 shows another partial perspective view of the pressure measuring module in an axial section
- FIG. 7 is a perspective view of a first adapter for a pressure measurement module according to FIG. 1 from obliquely above,
- Fig. 10 is a perspective view of the adapter according to Fig. 9 from below.
- the pneumatic device 2 can, for example, be an actuator for selecting and / or switching gears of an automated manual transmission.
- the selection and switching processes in the manual transmission itself take place in a known manner using pneumatic actuators, which are designed as piston-cylinder arrangements.
- One or more pressure sensors are required to control and monitor the electro-pneumatic switching device.
- Such manual transmissions are known.
- the only important thing here is the pressure measuring module 1 proposed by the invention.
- One or more of these pressure measuring modules 1 can be installed on such a manual transmission or on its electro-pneumatic switching device. 4 shows such a pressure measuring module 1 in the installed state on a pneumatic device 2, which is only indicated, here in the installed state on a transmission actuator of an automated manual transmission.
- the structure of a pressure measuring module 1 according to the invention is explained in more detail below.
- a pressure sensor 20 is integrated into the carrier 5.
- the structure of the pressure sensor 20 can best be seen in FIG. 4.
- the pressure sensor 20 in the present example is designed as a so-called MEMS sensor.
- This is a compact microsensor with a centrally arranged elastic membrane 21, on the surface of which several piezoresistors interconnected to form a Wheatstone bridge are arranged and firmly connected to the membrane.
- the membrane 21 is integrated into a circuit board 22 with evaluation electronics 24, which detects and evaluates the signals from the Wheatstone bridge.
- the membrane 21 sits at the end of a pneumatic opening 23 or bore in the carrier 5, which forms a pneumatic connection with the pneumatic device 2.
- the circuit board 22 is covered at the top with a cover 25 for protection.
- the pneumatic opening 23 is part of a pneumatic interface 26 of the pressure measuring module 1.
- the pneumatic interface 26 can be seen completely in the perspective views of FIGS. 2 and 3 and in section in FIGS. 5 and 6. Accordingly, the pneumatic interface 26 is designed as a cylindrical body which protrudes axially on one side from the first carrier side 15 of the carrier 5 seen from below.
- a pneumatic sealing means 27 designed as an O-ring is arranged, which is inserted into a groove 28 of the carrier 5 and surrounds the opening 23 in a ring shape. Due to the arrangement of the sealant 27, the pressure measuring module 1 or the pressure sensor 20 is connected to the pneumatic device 2 or to a pneumatic bore of this device in a sealed manner from the outside.
- Screw, clamp or hook connection means can be provided for the mechanical connection of the pneumatic interface 26 to the pneumatic device 2.
- the pressure measurement module 1 also has an electrical interface 30.
- the electrical interface 30 is arranged on the second carrier side 16, i.e. the upper one when viewed in the direction of view.
- the electrical interface 30 has an electrical spring contact device 31, which projects axially on the second carrier side 16.
- the spring contact device 31 comprises an ensemble of three electrical contact springs 32a, 32b, 32c, which are designed as helical compression springs.
- the contact springs 32a, 32b, 32c can be coated with an electrically highly conductive gold or silver layer.
- the electrical spring contact device 31 is electrically connected to the evaluation electronics 24 of the pressure sensor 20, so that the electrical pressure signal can be tapped at the electrical spring contact device 31.
- an electrical voltage change is generated at the Wheatstone bridge, which is proportional to the pressure change.
- the electrical voltage or pressure signal can be tapped directly at the electrical spring contact device 31 via a corresponding electrical connection of a control device 3 of the pneumatic device 2.
- an adapter can be inserted.
- Figures 7 and 8 show a first adapter 35.
- This first adapter 35 has a cover 36, which is placed on the carrier 5 and snapped into place on the locking pins 18, 19 by means of the second holding means 17 can be.
- two assigned receptacles 37, 38 for the locking pins 18, 19 are formed on the cover 36.
- a pressure signal transmitter 39 is arranged on the cover 36 and is electrically connected to the electrical spring contact device 31 of the pressure sensor 20 in the assembled state. Using the pressure signal transmitter 39, the measuring Signal can be tapped wirelessly, for example, and made available, for example, on a data bus system such as CAN bus.
- the second adapter 40 has a plate 41 with an extension 42, which extends beyond the carrier 5, essentially extending it.
- the plate 41 has two receptacles 43, 44 for the locking pins 18, 19 of the carrier 5 and, as with the first adapter 35, can be snapped into the carrier 5 by means of the second holding means 17.
- An electrical plug contact device 45 is arranged in the extension 42 of the plate 41.
- the electrical plug contact device 45 has three plug contacts 45a, 45b, 45c, which corresponds to the number of contact springs 32a, 32b, 32c of the electrical spring contact device 31.
- Each plug contact 45a, 45b, 45c is electrically connected to an electrical contact spring 32a, 32b, 32c in the assembled state of the adapter 40.
- the pressure measuring module 1 or the pressure sensor 20 can be electrically connected to a plug connection of the pneumatic device 2 or to a control device 3 of the pneumatic device 2, for example with a plug connection of a cable harness.
- Electrical interface of the pressure measurement module Electrical spring contact device of the electrical interfacea First contact spring of the electrical spring contact deviceb Second contact spring of the electrical spring contact devicec Third contact spring of the electrical spring contact device First adapter for the pressure measuring module
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022107409.9A DE102022107409A1 (de) | 2022-03-29 | 2022-03-29 | Druckmessmodul für eine pneumatische Einrichtung eines Fahrzeugs |
| PCT/EP2023/054121 WO2023186403A1 (de) | 2022-03-29 | 2023-02-20 | Druckmessmodul für eine pneumatische einrichtung eines fahrzeugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4500136A1 true EP4500136A1 (de) | 2025-02-05 |
Family
ID=85383011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23707293.9A Pending EP4500136A1 (de) | 2022-03-29 | 2023-02-20 | Druckmessmodul für eine pneumatische einrichtung eines fahrzeugs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250216280A1 (de) |
| EP (1) | EP4500136A1 (de) |
| CN (1) | CN118829861A (de) |
| DE (1) | DE102022107409A1 (de) |
| WO (1) | WO2023186403A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10302280A1 (de) | 2002-08-21 | 2004-03-04 | Continental Teves Ag & Co. Ohg | Drucksensormodul |
| DE10329489B4 (de) | 2003-02-13 | 2012-06-06 | Continental Teves Ag & Co. Ohg | Drucksteuergerät |
| ITTO20080484A1 (it) * | 2008-06-19 | 2009-12-20 | Eltek Spa | Dispositivo sensore di pressione |
| DE102008054382A1 (de) * | 2008-12-08 | 2010-06-10 | Robert Bosch Gmbh | Drucksensormodul |
| DE102012205280A1 (de) | 2012-03-30 | 2013-10-02 | Zf Friedrichshafen Ag | Drucksensoranordnung |
| JP6802289B2 (ja) | 2016-12-06 | 2020-12-16 | 日立オートモティブシステムズ株式会社 | 圧力検出装置 |
| DE102019126526A1 (de) | 2019-10-01 | 2021-04-01 | Rapa Automotive Gmbh & Co. Kg | Drucksensor mit platine zu platine verbindung |
-
2022
- 2022-03-29 DE DE102022107409.9A patent/DE102022107409A1/de active Pending
-
2023
- 2023-02-20 CN CN202380026838.5A patent/CN118829861A/zh active Pending
- 2023-02-20 US US18/851,296 patent/US20250216280A1/en active Pending
- 2023-02-20 WO PCT/EP2023/054121 patent/WO2023186403A1/de not_active Ceased
- 2023-02-20 EP EP23707293.9A patent/EP4500136A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250216280A1 (en) | 2025-07-03 |
| DE102022107409A1 (de) | 2023-10-05 |
| CN118829861A (zh) | 2024-10-22 |
| WO2023186403A1 (de) | 2023-10-05 |
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Legal Events
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| 17P | Request for examination filed |
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