WO1992014305A1 - Bus system - Google Patents

Bus system Download PDF

Info

Publication number
WO1992014305A1
WO1992014305A1 PCT/DE1991/000966 DE9100966W WO9214305A1 WO 1992014305 A1 WO1992014305 A1 WO 1992014305A1 DE 9100966 W DE9100966 W DE 9100966W WO 9214305 A1 WO9214305 A1 WO 9214305A1
Authority
WO
WIPO (PCT)
Prior art keywords
bus system
bus
command
command transmitters
contacts
Prior art date
Application number
PCT/DE1991/000966
Other languages
German (de)
French (fr)
Inventor
Horst Gerlach
Gerhard Wimmer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1992014305A1 publication Critical patent/WO1992014305A1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G08C19/025—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage using fixed values of magnitude of current or voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/22—Static coding
    • H03M11/24—Static coding using analogue means, e.g. by coding the states of multiple switches into a single multi-level analogue signal or by indicating the type of a device using the voltage level at a specific tap of a resistive divider

Definitions

  • the invention relates to a bus system, the stations of which are connected via bus and evaluate, among other things, information received from commanders.
  • a relevant bus system is described, for example, in EP-A-0 365 696.
  • Each command transmitter which can in principle also be an adjacent station, can be distinguished from others by coded signals. A certain minimum amount of electronic means is required for this. On the other hand, one would have to provide a separate line for each commander to distinguish it from others. For "n" commanders, even with a common return line, n + 1 lines would have to be made available. Even if the wiring were to be provided as a matrix connection, 2 x square roots from "n" on lines for "n” command transmitters would still be required.
  • the invention is based on the object of developing a bus system which, at least in some cases, enables command transmitters to be clearly identified with little expenditure on electronic means and on lines.
  • the command transmitters are in principle designed as make contacts, which differ in their circuit resistance.
  • Such normally open contacts can also be chip components or simple electrical switches which, when actuated, establish a line connection and have a series resistor.
  • several command transmitters can be switched on in a common line branch that is separate from the bus, and this line branch can be supplied with direct voltage, which is typically lowered by the normally closed contact.
  • the command transmitters can also be connected to the bus if the bus carries the operating voltage as DC voltage in a manner known per se and information is transmitted between the stations by AC voltage.
  • the stations can either be connected directly to the bus or switched on in a separate branch, which is connected to a bus coupler suitable for evaluation or to a suitable station.
  • a line branch 2 is connected to a station 1, which can be a bus coupling unit.
  • the line branch 2 has the conductors 3 and 4.
  • the line branch can be understood as a bus, to which further stations 1 can be connected, or also as a separate line branch. Station 1 is then connected to other stations via a bus 5.
  • the line branch 2 is the conductor 4 via the Conductor 3 is supplied with a DC voltage U via the resistor ⁇ .
  • Normally open contacts 6, S1 to Sn, are arranged in line branch 2, each having an assigned circuit resistance 7, Rsl to Rsn.
  • a connection voltage Uan then results for a specific NO contact Sx according to the relationship
  • the voltage then drops for each make contact by a characteristic amount or to a certain voltage Uan when the make contact is closed.
  • This information can optionally be converted into a digital signal in station 1. Such a signal can be forwarded to other stations connected via a bus 5 in a fail-safe manner.

Abstract

Disclosed is a bus system in which the stations (1) connected by bus (5) process information received, for example, from instruction-giving elements. The invention calls for the instruction-giving elements to be designed, in principle, as make contacts (6: S1, S2, ...) which differ from each other in their circuit resistance (7: Rs1, Rs2, ...).

Description

Bussystem Bus system
Die Erfindung bezieht sich auf ein Bussystem, dessen über Bus verbundene Stationen unter anderem von Befehlsgebern empfangene Informationen auswerten. Ein einschlägiges Bussystem ist bei¬ spielsweise in EP-A-0 365 696 beschrieben.The invention relates to a bus system, the stations of which are connected via bus and evaluate, among other things, information received from commanders. A relevant bus system is described, for example, in EP-A-0 365 696.
Jeder Befehlsgeber, der im Grundsatz auch eine benachbarte Station sein kann, läßt sich von anderen durch kodierte Signale unterscheiden. Hierzu ist ein bestimmter Mindestaufwand an elektronischen Mitteln erforderlich. Andererseits müßte man für jeden Befehlsgeber zur Unterscheidung von anderen eine eigene Leitung bereitstellen. Für "n" Befehlsgeber wären also selbst bei einer gemeinsamen Rückleitung n + 1 Leitungen zur Verfügung zu stellen. Selbst wenn man die Beschaltung als Matrix-Anschluß vorsehen würde, wären noch 2 x Quadratwurzel aus "n" an Lei- tungen für "n" Befehlsgeber erforderlich.Each command transmitter, which can in principle also be an adjacent station, can be distinguished from others by coded signals. A certain minimum amount of electronic means is required for this. On the other hand, one would have to provide a separate line for each commander to distinguish it from others. For "n" commanders, even with a common return line, n + 1 lines would have to be made available. Even if the wiring were to be provided as a matrix connection, 2 x square roots from "n" on lines for "n" command transmitters would still be required.
Der Erfindung liegt die Aufgabe zugrunde, ein Bussystem zu entwickeln, das zumindest in einigen Einsatzfällen es er¬ möglicht, Befehlsgeber bei geringem Aufwand an elektronischen Mitteln und an Leitungen eindeutig zu identifizieren.The invention is based on the object of developing a bus system which, at least in some cases, enables command transmitters to be clearly identified with little expenditure on electronic means and on lines.
Die Lösung der geschilderten Aufgabe erfolgt erfindungsgemäß durch ein Bussystem nach Patentanspruch 1. Hiernach sind die Befehlsgeber im Prinzip als Schließer ausgeführt, die sich durch ihren Schaltungwiderstand unterscheiden. Derartige Schließer können auch Chip-Bausteine sein oder einfache elektrische Schalter, die bei Betätigung eine Leitungsver¬ bindung herstellen und einen Vorschaltwiderstand aufweisen. Dadurch können mehrere Befehlsgeber in einem gemeinsamen, vom Bus gesonderten Leitungszweig eingeschaltet werden und dieser Leitungszweig kann mit Gleichspannung beaufschlagt sein, die durch den jeweils geschlossenen Schließer in charakteris- tischer Weise abgesenkt wird. Die Befehlsgeber können aber auch am Bus angeschlossen sein, wenn dieser in an sich bekannter Weise die Betriebsspannung als Gleichspannung führt und Infor¬ mationen zwischen den Stationen durch Wechselspannung über¬ tragen werden.According to the invention, the object described is achieved by a bus system according to claim 1. According to this, the command transmitters are in principle designed as make contacts, which differ in their circuit resistance. Such normally open contacts can also be chip components or simple electrical switches which, when actuated, establish a line connection and have a series resistor. As a result, several command transmitters can be switched on in a common line branch that is separate from the bus, and this line branch can be supplied with direct voltage, which is typically lowered by the normally closed contact. However, the command transmitters can also be connected to the bus if the bus carries the operating voltage as DC voltage in a manner known per se and information is transmitted between the stations by AC voltage.
Es ist möglich, die Befehlsgeber in den Schaltkreiswider¬ ständen so aufeinander abzustimmen, daß auch bei Betätigung mehrerer Schließer sich eine Zuordenbarkeit ergibt.It is possible to coordinate the command transmitters in the circuit resistors in such a way that they can be assigned even when several NO contacts are actuated.
Nach einer Weiterbildung ist es auch möglich, das Absenken der Spannung von einer zugeordneten Station in digitale Information umzusetzen. Hierzu können die Stationen entweder direkt an den Bus angeschlossen werden oder auch in einem gesonderten Zweig eingeschaltet werden, der an einen zur Auswertung geeigneten Busankoppler oder an eine geeignete Station angeschlossen ist.According to a further development, it is also possible to convert the lowering of the voltage from an assigned station into digital information. For this purpose, the stations can either be connected directly to the bus or switched on in a separate branch, which is connected to a bus coupler suitable for evaluation or to a suitable station.
Die Erfindung soll nun anhand eines in der Zeichnung grob schematisch wiedergegebenen Ausführungsbe-ispi-el näher erläutert werden:The invention will now be explained in more detail with reference to an exemplary embodiment shown roughly schematically in the drawing:
In der Zeichnung ist an einer Station 1, die ein Busankoppler sein kann, ein Leitungszweig 2 angeschlossen. Der Leitungszweig 2 weist die Leiter 3 und 4 auf. Der Leitungszweig kann als Bus verstanden werden, an dem weitere Stationen 1 angeschlossen sein können, oder auch als gesonderter Leitungszweig. Die Station 1 ist dann über einen Bus 5 mit weiteren Stationen verbunden.In the drawing, a line branch 2 is connected to a station 1, which can be a bus coupling unit. The line branch 2 has the conductors 3 and 4. The line branch can be understood as a bus, to which further stations 1 can be connected, or also as a separate line branch. Station 1 is then connected to other stations via a bus 5.
Der Leitungszweig 2 wird hinsichtlich des Leiters 4 über den Leiter 3 mit einer Gleichspannung U über den Widerstanα versorgt. Im Leitungszweig 2 sind Schließer 6, Sl bis Sn, ange¬ ordnet, die jeweils einen zugeorndeten Schaltkreiswiderstand 7, Rsl bis Rsn, aufweisen. Für einen bestimmten Schließer Sx ergibt sich dann eine Anschlußspannung Uan nach der BeziehungThe line branch 2 is the conductor 4 via the Conductor 3 is supplied with a DC voltage U via the resistor α. Normally open contacts 6, S1 to Sn, are arranged in line branch 2, each having an assigned circuit resistance 7, Rsl to Rsn. A connection voltage Uan then results for a specific NO contact Sx according to the relationship
Uan = U x Rl R+sxRsxUan = U x R R + sx Rsx
Die Spannung sinkt dann für jeden Schließer um ein charak- teristisches Ausmaß bzw. zu einer bestimmten Spannung Uan ab, wenn der Schließer geschlossen wird. Diese Information kann in der Station 1 gegebenenfalls in ein digitales Signal umgesetzt werden. Ein derartiges Signal kann an weitere, über einen Bus 5 angeschlossene Stationen störungssicher weitergeleitet werden. The voltage then drops for each make contact by a characteristic amount or to a certain voltage Uan when the make contact is closed. This information can optionally be converted into a digital signal in station 1. Such a signal can be forwarded to other stations connected via a bus 5 in a fail-safe manner.

Claims

Patentansprüche Claims
1. Bussystem, dessen über Bus (5) verbundene Stationen (1) unter anderem von Befehlsgebern empfangene Informationen aus- werten, d a d u r c h g e k e n n z e i c h n e t , daß die Befehlsgeber im Prinzip als Schließer (6: Sl, S2, ...) aus¬ geführt sind, die sich durch ihren Schaltkreiswiderstand (7: Rsl, Rs2, ...) unterscheiden.1. bus system whose stations (1) connected via bus (5) evaluate, among other things, information received from command transmitters, characterized in that the command transmitters are in principle designed as normally open contacts (6: S1, S2, ...), which differ in their circuit resistance (7: Rsl, Rs2, ...).
2. Bussystem nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Befehlsgeber als Schließer (6) ausgeführt sind, die sich durch einen Vorschaltwiderstand .unterscheiden.2. Bus system according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the command transmitter are designed as make contacts (6), which differ by a ballast resistor.
3. Bussystem nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Befehlsgeber in den Schaltkreiswiderständen (7) so aufeinander abgestimmt sind, daß auch bei Betätigung mehrerer Schließer (6) eine Zuordenbarkeit gegeben ist.3. Bus system according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the command transmitters in the circuit resistors (7) are matched to one another so that even when several NO contacts (6) are actuated, an assignment is given.
4. Bussystem nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Befehlsgeber in einem gemeinsamen, vom Bus (5) gesonderten Zweig (2) eingeschaltet sind, wobei dieser Leitungszweig (2) mit Gleichspannung beaufschlagt ist, die durch den jeweils geschlossenen Schließer (6) in charakteristischer Weise abge¬ senkt wird.4. Bus system according to claim 1, characterized in that the command transmitters are switched on in a common branch (2) separate from the bus (5), this line branch (2) being acted upon by direct voltage, which is closed by the normally open contact (6) is lowered in a characteristic manner.
5. Bussystem nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t , daß das Ab¬ senken der Spannung von einer zugeordneten Station (1) in digitale Information umgesetzt wird. 5. Bus system according to claim 4, so that the lowering of the voltage is converted into digital information by an assigned station (1).
PCT/DE1991/000966 1991-02-12 1991-12-12 Bus system WO1992014305A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914104230 DE4104230A1 (en) 1991-02-12 1991-02-12 BUS SYSTEM
DEP4104230.1 1991-02-12

Publications (1)

Publication Number Publication Date
WO1992014305A1 true WO1992014305A1 (en) 1992-08-20

Family

ID=6424888

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000966 WO1992014305A1 (en) 1991-02-12 1991-12-12 Bus system

Country Status (2)

Country Link
DE (1) DE4104230A1 (en)
WO (1) WO1992014305A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638913A1 (en) * 1993-08-12 1995-02-15 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Detection circuit for the switch position of several bipolar switches and application for a jet engine thrust reverser
WO2000016487A1 (en) * 1998-09-14 2000-03-23 Square D Company Circuit for time-sharing of configurable i/o pins

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4312616A1 (en) * 1993-04-19 1994-10-20 Abb Patent Gmbh Device for data transmission via an installation bus system
DE4312615B4 (en) * 1993-04-19 2004-08-26 Abb Patent Gmbh Control device for generating a variable output signal
DE19647131C2 (en) * 1996-11-14 2001-12-06 Liebherr Werk Ehingen Device and method for time-multiplexed transmission of information
DE19911698A1 (en) * 1999-03-16 2000-09-21 Sick Ag Safety switching arrangement
DE102007010591B4 (en) * 2007-03-05 2011-06-22 Texas Instruments Deutschland GmbH, 85356 Switch state detector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035625B2 (en) * 1970-07-17 1973-03-15 Yokogawa Electric Works, Ltd , Mu sashino, Tokio (Japan) CIRCUIT ARRANGEMENT FOR THE TRANSMISSION OF PULSES
US4464660A (en) * 1979-12-06 1984-08-07 S-Cubed Multichannel remote transducer monitoring system
US4583189A (en) * 1982-06-07 1986-04-15 Victor Company Of Japan, Limited Microprocessor-based scan-mode keying circuit
EP0319270A2 (en) * 1987-11-30 1989-06-07 Furukawa Electric Co., Ltd. Multiplex transmission system
US4872008A (en) * 1986-10-20 1989-10-03 Matsushita Electric Industrial Co., Ltd. Key input device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035625B2 (en) * 1970-07-17 1973-03-15 Yokogawa Electric Works, Ltd , Mu sashino, Tokio (Japan) CIRCUIT ARRANGEMENT FOR THE TRANSMISSION OF PULSES
US4464660A (en) * 1979-12-06 1984-08-07 S-Cubed Multichannel remote transducer monitoring system
US4583189A (en) * 1982-06-07 1986-04-15 Victor Company Of Japan, Limited Microprocessor-based scan-mode keying circuit
US4872008A (en) * 1986-10-20 1989-10-03 Matsushita Electric Industrial Co., Ltd. Key input device
EP0319270A2 (en) * 1987-11-30 1989-06-07 Furukawa Electric Co., Ltd. Multiplex transmission system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638913A1 (en) * 1993-08-12 1995-02-15 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Detection circuit for the switch position of several bipolar switches and application for a jet engine thrust reverser
FR2709017A1 (en) * 1993-08-12 1995-02-17 Snecma Circuit for detecting the position of several bipolar contactors and application to a thrust reverser of a turbojet engine.
US5508626A (en) * 1993-08-12 1996-04-16 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Circuit for detecting the position of several bipolar contactors and application for a thrust reverser of a turbojet engine
WO2000016487A1 (en) * 1998-09-14 2000-03-23 Square D Company Circuit for time-sharing of configurable i/o pins

Also Published As

Publication number Publication date
DE4104230A1 (en) 1992-08-13

Similar Documents

Publication Publication Date Title
EP1168271B1 (en) Field bus coupling system for actuators or sensors
DE2362344A1 (en) DATA TRANSFER SYSTEM
EP0790541A2 (en) Connecting arrangement for an electrical installation system
WO1992014305A1 (en) Bus system
WO2007017073A2 (en) Facility management system or danger warning system
DE102005043489A1 (en) Field device for e.g. data processing application, has converting unit, which converts binary signal representing data bit stream to periodic frequency shift keying signal using microcontroller
EP0187876B1 (en) Installation system for a lift construction
DE3826893C2 (en)
EP0035277A1 (en) Sequential transmission system for connecting without addressing a plurality of subscribers to an exchange
EP0792078B1 (en) Actuator-sensor interface system
DE4407895C2 (en) Method for configuring an information data network
EP2009962A2 (en) Method for operating a multi-channel dimmer
DE102007004917A1 (en) Method and arrangement for controlling and monitoring field elements
EP0896264B1 (en) Programmable interface for technical systems in a building
DE3240342C2 (en) Device for connecting central functional units to a track plan signal box
CH626760A5 (en) Circuit arrangement for two-way DC-coupling of two electrical systems with different input or output voltages
DE2538979C3 (en) Electronic circuit arrangement for connecting alternating current networks in parallel
DE2145172C3 (en) Remote transmission device for information to be transmitted as digital pulse telegrams
DE19610090C1 (en) Information communications system for micro-chips between individual elements in internal and external buses
DE4334906A1 (en) Device for the transmission of call and occupancy status signals from two-way or intercom systems with line selection via a two-wire transmission line
DE3207677A1 (en) Circuit arrangement for performing ancillary functions in conjunction with connection circuits forming basic assemblies
DE3415008A1 (en) System arrangement for electric signal transmission and signal processing
DE3444384A1 (en) Data transmission device
EP0386485A2 (en) Control panel for an electronic switch tower
EP0232809B1 (en) Method and device for the parallel switching of branches or networks containing synchronous generators

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA FI US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WA Withdrawal of international application
NENP Non-entry into the national phase

Ref country code: CA