EP0463353A1 - Système de commande pneumatique - Google Patents

Système de commande pneumatique Download PDF

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Publication number
EP0463353A1
EP0463353A1 EP19910108072 EP91108072A EP0463353A1 EP 0463353 A1 EP0463353 A1 EP 0463353A1 EP 19910108072 EP19910108072 EP 19910108072 EP 91108072 A EP91108072 A EP 91108072A EP 0463353 A1 EP0463353 A1 EP 0463353A1
Authority
EP
European Patent Office
Prior art keywords
pressure
control system
circuit board
pressure sensor
pneumatic control
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.)
Granted
Application number
EP19910108072
Other languages
German (de)
English (en)
Other versions
EP0463353B1 (fr
Inventor
Klaus Dipl.-Ing. Kiefer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0463353A1 publication Critical patent/EP0463353A1/fr
Application granted granted Critical
Publication of EP0463353B1 publication Critical patent/EP0463353B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2657—Details with different switches operated at substantially different pressures

Definitions

  • the invention is based on a pneumatic control system according to the preamble of claim 1.
  • the connected systems that is to say the consumers, are each assigned pressure switches.
  • these pressure switches must be specially matched to the individual systems, so that there is a large number of components to be used. Due to the tolerances of the components of the switches, each switch must be adjusted individually. There are also many hand soldering points that prevent assembly-friendly manufacture. If a pressure switch is responsible for several consumers, it has several fixed switching points. The arrangement of the solenoid valves downstream of the pressure switches creates a throttling effect that causes different switching points for the consumers. Replacing the pressure switches with sensors would not reduce the assembly effort.
  • the pneumatic control system according to the invention with the characterizing features of claim 1 has the advantage that the control system is particularly inexpensive and easy to assemble.
  • the use of a multiple pressure sensor manufactured as an installation part results in a 2 to 2.5-fold reduction in price compared to the use of individual sensors. Due to the compact design, only a small amount of space is required for the pressure sensor on the circuit board for the electronic evaluation circuit. Furthermore, the arrangement of the pressure sensor on the circuit board of the evaluation circuit eliminates the need for individual soldering processes.
  • the board can be brazed in a wave in a single, simple assembly step.
  • FIG. 1 shows a block diagram of the pneumatic switchgear in a schematic representation
  • FIG. 2 shows a section through a multiple pressure sensor.
  • 10 denotes a printed circuit board which consists of an electrically non-conductive material.
  • a ceramic or plastic plate can be used for this.
  • a multiple pressure sensor 11, as exemplified in FIG. 2, is arranged on the printed circuit board 10 and is integrated in an operational amplifier 12.
  • the operational amplifier 12 also has a PTC resistor 13, that is to say a resistor made of a material with a positive temperature coefficient, for temperature compensation.
  • the electrical connection contacts 19 for the electrical connection lines 20 of solenoid valves 21 are located on the printed circuit board 10 in the area of the microcomputer 16.
  • the solenoid valves 21 are fastened on a conventionally known base plate 22, which is used to control the compressed air from a bidirectional pump 23 (not shown) Channels in the base plate 22 serve the consumers.
  • the connections 24 for the lines leading to the consumers are shown on the base plate 22 in FIG.
  • consumers, for. B. be connected central locking, orthopedic backrest, headlight range control, climate flap control.
  • a bi-pressure pump 23 is a commercially available feed pump for compressed air that can deliver in both directions of rotation of the pump. As a result, an overpressure and an underpressure can be generated in a system connected to the base plate 22.
  • connection 25a, 25b for a so-called closed system are also present on the base plate 22. This is a system in which pressure fluctuations can be compensated for with the help of accumulators.
  • the connection 25a is therefore designated as P + as the positive pressure connection and the connection 25b as P- as the negative pressure connection.
  • the solenoid valves 21 are shown as examples in FIG. 1 as 3/2-way valves.
  • the control of the individual solenoid valves 21 is carried out in a known manner via the series-connected electromagnets of the solenoid valves 21 against the force of a return spring 27.
  • Pressure lines lead from the base plate 22 to the individual transducers of the multiple pressure sensors 11.
  • a pressure line 30 connected to the transducer 11a is provided for pressure detection of the consumers which can be controlled simultaneously or individually by means of the solenoid valves 21.
  • a pressure line 31 for detecting the overpressure P + in the closed system and a pressure line 32 for detecting the underpressure P-in the closed system lead to the two other individual sensors 11 and 11 of the multiple pressure sensor 11.
  • the representation with three individual sensors is only an exemplary representation thought.
  • the multiple pressure sensor 11 is shown in more detail in FIG. 2 in a longitudinal section. It has a common housing 35 which is divided into reference chambers 37 by partitions 36 according to the number of individual transducers 11 to 11 c.
  • the reference chambers 37 are covered by a membrane 38 which can be applied to the openings of the reference chambers 37 in one operation.
  • the pressure to be determined in each case acts on the membrane 38, i. H. the pressure in the consumers or P + or P- in the closed system against the reference pressures prevailing in the reference chambers 37.
  • Contact pins 40 which are operatively connected to the membrane 38 are fastened in the housing base 39, the electrical lines 41 of which are led through the housing base 39 to the operational amplifier 12.
  • the decisive factor is the pressure detection with the aid of a multiple sensor, with several individual sensors being arranged in one component to save space. Furthermore, the multiple pressure sensor is attached directly to the printed circuit board 10 of the evaluation circuit in an assembly-friendly manner.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Control Of Fluid Pressure (AREA)
EP91108072A 1990-06-23 1991-05-18 Système de commande pneumatique Expired - Lifetime EP0463353B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4020108 1990-06-23
DE4020108A DE4020108A1 (de) 1990-06-23 1990-06-23 Pneumatische steueranlage

Publications (2)

Publication Number Publication Date
EP0463353A1 true EP0463353A1 (fr) 1992-01-02
EP0463353B1 EP0463353B1 (fr) 1993-07-28

Family

ID=6408981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108072A Expired - Lifetime EP0463353B1 (fr) 1990-06-23 1991-05-18 Système de commande pneumatique

Country Status (3)

Country Link
EP (1) EP0463353B1 (fr)
DE (2) DE4020108A1 (fr)
ES (1) ES2043406T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042056A1 (fr) * 1999-12-07 2001-06-14 Robert Bosch Gmbh Circuit de regulation de surpression pour consommateur pneumatique situe dans un vehicule
CN106958549A (zh) * 2017-03-20 2017-07-18 东莞市泽森自动化设备有限公司 齐头气动集成系统及其气动模组

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135931C1 (en) * 1991-10-31 1993-04-15 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Pressure supply system for providing positioning elements with differing pressures - has controllable compressor connected to elements via feed line, pressure sensor and control switches

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2558458A1 (de) * 1975-12-23 1977-07-07 Schubert & Salzer Maschinen Elektro - pneumatischer wandler
FR2394167A1 (fr) * 1977-06-10 1979-01-05 Bosch Siemens Hausgeraete Manostat pour appareils menagers fonctionnant a l'eau, en particulier pour lave-vaisselle ou machines a laver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400945A1 (de) * 1984-01-13 1985-07-25 Robert Bosch Gmbh, 7000 Stuttgart Zentralverriegelungsanlage eines kraftfahrzeugs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2558458A1 (de) * 1975-12-23 1977-07-07 Schubert & Salzer Maschinen Elektro - pneumatischer wandler
FR2394167A1 (fr) * 1977-06-10 1979-01-05 Bosch Siemens Hausgeraete Manostat pour appareils menagers fonctionnant a l'eau, en particulier pour lave-vaisselle ou machines a laver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042056A1 (fr) * 1999-12-07 2001-06-14 Robert Bosch Gmbh Circuit de regulation de surpression pour consommateur pneumatique situe dans un vehicule
US6625980B1 (en) 1999-12-07 2003-09-30 Robert Bosch Gmbh Overpressure control circuit for vehicle pneumatic system
CN106958549A (zh) * 2017-03-20 2017-07-18 东莞市泽森自动化设备有限公司 齐头气动集成系统及其气动模组
CN106958549B (zh) * 2017-03-20 2019-01-15 东莞市泽森自动化设备有限公司 齐头气动集成系统及其气动模组

Also Published As

Publication number Publication date
DE4020108A1 (de) 1992-01-09
DE59100222D1 (de) 1993-09-02
EP0463353B1 (fr) 1993-07-28
DE4020108C2 (fr) 1993-06-17
ES2043406T3 (es) 1993-12-16

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