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WO1999060453A1 - Bloc de composants d'entree numerique - Google Patents

Bloc de composants d'entree numerique Download PDF

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Publication number
WO1999060453A1
WO1999060453A1 PCT/DE1999/001388 DE9901388W WO9960453A1 WO 1999060453 A1 WO1999060453 A1 WO 1999060453A1 DE 9901388 W DE9901388 W DE 9901388W WO 9960453 A1 WO9960453 A1 WO 9960453A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
input
voltage
digital
input unit
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.)
Ceased
Application number
PCT/DE1999/001388
Other languages
German (de)
English (en)
Inventor
Jürgen RAIMER
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Priority to HK01106610.6A priority Critical patent/HK1036113B/xx
Priority to AT0903499A priority patent/AT413307B/de
Publication of WO1999060453A1 publication Critical patent/WO1999060453A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1881—Wiring diagrams for power supply, control or testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation

Definitions

  • the invention is based on the object of specifying a digital input module for a DV system with which a digital signal can be obtained from a binary-coded signal alternating or signal voltage applied to a contact of a signal transmitter, while enabling its functionality to be checked.
  • a digital input module for a DV system for obtaining a digital signal from a binary-coded signal voltage applied to a contact of a signal generator, which in the case of a logical “ ⁇ ” has a voltage value different from zero volts and in the case of a logical "0 has a voltage value of zero volts, with
  • a switching unit connected to a further input of the input unit via its fixed connection, which has the input unit with a voltage value different from zero volt for obtaining the digital signal of the tapping voltage having the tapping voltage having the voltage value of zero volts and for generating a test signal of the digital input module having test voltage applied, and - an optocoupler arranged in the input unit,
  • the main advantage of the digital input module according to the invention is that it can be monitored for its reliability and can therefore also be used in the field of railways - for example in relay signal boxes - where, as is known, very high safety requirements are imposed.
  • the controllability of the reliability of the digital input module is based specifically on the fact that it can be tested regularly with regard to its functionality by the switchover unit, namely by using the switchover unit to apply the test voltage to the further input of the input unit instead of the tapping voltage; this works in the following way: In normal operation - d.
  • a voltage of zero volts is applied to the further input of the input unit by means of the switchover unit, so that the signal voltage present at one input of the input unit is applied via the rectifier and the optical coupler is switched through unchanged with regard to its binary information to the output of the input unit and thus to the output of the digital input module as a digital signal; in test mode, on the other hand, the switchover unit is used to apply the test voltage to the further input of the input unit, the voltage value of which corresponds to the signal voltage of the signal generator in the case of a logical “1”.
  • This switching over at the further input of the input unit leads to a change in the differential voltage present at the two inputs of the input unit, which, in the case of a functional digital input module, must be reflected in a change in the output signal at the output of the input unit or in the occurrence of the test signal;
  • the test signal thus corresponds to the inverted digital signal with regard to its binary information.
  • the switchover unit produces a voltage difference of 0 volts at the two inputs of the input unit, which is interpreted in the digital input module as a logical “0” because of the the same voltages are applied to both inputs of the input unit; after the switchover, the output signal must then be changed at the output of the input unit or the test signal must appear with a logical “0 N ”. If the test signal does not appear, the digital input module is defective. The digital input module can be checked accordingly if a logical “0” is present at the contact of the signal transmitter.
  • Another advantage of the digital input module according to the invention is that, due to the rectifier bridge, it can be operated both with an AC signal voltage as a signal voltage and with a DC signal voltage as a signal voltage, since the rectifier bridge always transmits a (“positive *) DC voltage to the optocoupler; This is necessary on the one hand because digital input modules usually emit a DC voltage signal at their output as a digital signal, but on the other hand it is necessary because optocouplers generally have a photodiode on the input side that cannot be operated in the reverse direction.
  • the optocoupler in turn offers the advantage that the DV system is effectively protected against overvoltage at the contact of the signal transmitter, which excludes damage to the DV system and the reliability and thus the operational safety of the tapping unit formed from the DV system and digital input module clearly increased.
  • the digital input module has further input units corresponding to the one input unit, to the one input of which a further contact of the signal generator can be connected, and the further input of which is connected to the switchover unit.
  • the digital input module is connected to the relay contacts of the relay signal box.
  • the relay contacts are usually connected to ground via an optical display device. If this is not the case for individual relay signal boxes, the missing display means can be replaced with regard to their electrical effect on the digital input module by switching an electrical load - for example an ohmic resistor or a constant current source - between the two inputs of the input unit becomes.
  • Digital input module consists in that it can be used in the same way both in relay signal boxes with optical display means and without optical display means.
  • the switchover unit has an assignable connection to ground and its other assignable connection to a voltage source of the signal generator can be connected, which emits the voltage other than zero volts.
  • an embodiment of a digital input module according to the invention is shown in a figure.
  • the figure shows a digital input module 1 for obtaining a digital signal from a signal voltage present at a contact 5 of a signal generator 10 with an input unit 15, to whose input E15a the contact 5 of the signal generator 10 can be connected or is shown in the figure as connected .
  • the input unit 15 has an optocoupler 20 for potential isolation.
  • One input E15a of the input unit 15 is connected to an optocoupler input E20a of the optocoupler 20, and another input E15b of the input unit 15 is connected to a further optocoupler input E20b.
  • the connection between the two inputs E15a and E15b of the input unit 15 and the two optocoupler inputs E20a and E20b of the optocoupler 20 is ensured by a rectifier bridge 25.
  • a switchover unit 30 with a fixed connection E30a is connected to the further input E15b of the input unit 15.
  • the switchover unit 30 is connected by means of its one assignable connection E30b to ground as a tapping voltage and by means of its other assignable connection E30c to a test voltage, the test voltage corresponding to the amount of the signal voltage supplied by the signal generator 10 and other than zero volts; This is specifically achieved in that the other assignable connection E30c of the switchover unit 30 is connected to the voltage source 35 in the signal generator 10.
  • the signal generator 10 has electrical switches 40, each between the
  • Voltage source 35 and the respective contact of the signal generator 10 are connected.
  • the signal transmitter 10 has further contacts 45 with which further signal voltages can be transmitted.
  • further input units 50 are shown, which correspond in terms of their electrical structure to the one input unit 15 and which are each connected with their one input E50a to one of the further contacts 45 of the signal generator 10.
  • the contact 5 and / or the further contacts 45 of the signal generator 10 are relay contacts of a relay interlocking system operating as a signal generator 10.
  • optical display means 55 are connected, which visualize the signal voltage at their respective contact. Since the signal transmitter 10 is a relay interlocking, the optical display means 55 are, for example, lamps on a signal board of the relay interlocking.
  • a digital signal can be obtained from a binary-coded signal voltage (AC or DC voltage) at the contact 5, and 45 further digital signals can be obtained from further such signal voltages at the further contacts and fed into a DV system;
  • the digital input module 1 is connected between contacts 5 and 45 and the DV system.
  • Outputs A15a and A15b of the input unit 15 and outputs A50a and A50b of the further input units 50 are used for the DV-side connection, ie for feeding the digital signals obtained into the DV system.
  • a tapping voltage of zero volts is applied to the further inputs E15b and E50b of the input units 15 and 50, so that there is one input unit 15 and two between the two inputs E15a and E15b forms a voltage between the two inputs E50a and E50b of the further input units which corresponds to the respective signal voltage, ie, depending on the position of the respective switch 40, is equal to zero volts or equal to the voltage of the voltage source 35 different from zero volts.
  • the voltage source can emit, for example, 60 V or 24 V DC voltage or also 24 V AC voltage.
  • the voltage present between the two inputs of the respective input unit is rectified in the associated rectifier bridge and transmitted from there to the respective optocoupler, which carries out electrical isolation and outputs an output voltage corresponding to the binary code of the signal voltage of the respective contact at the outputs of the digital input module as a digital signal.
  • the signal voltage of the respective contact is thus rectified in the digital input module and switched through as a digital signal to the respective output of the digital input module.
  • the functioning of the digital input module 1 can be checked by connecting the further input E15b or the further inputs E50b of the further input units 50 to the voltage source 35 with the aid of the switchover unit 30.
  • a voltage is formed between the two inputs E15a and E15b of one input unit 15 and in each case between the two inputs E50a and E50b of the further input units 50, which is zero volts when the signal voltage is not zero volts (switch 40 closed) and at a signal voltage is zero volts (switch 40 open) is not zero volts; this change in input output voltage at the input units 15 and 50 must be noticeable at a functioning digital input module 1 at the two outputs of the input units 15 and 50 by a signal change and lead to a test signal at the output of the respective input unit or the digital input module 1; the test signal is therefore equal to the inverted digital signal.
  • the respective optical display means must be defective.
  • switching units 70 can also be contained in the digital input module 1, which work exactly like the one switching unit 30 and are connected to their own input units, not shown in the figure. If there are several switching units 70, these can be actuated one after the other in time and the signal level changes at the outputs of the input units can be observed.
  • signal level changes may only occur on input units of the respective switching unit; If, on the other hand, signal level changes also occur on input units of one or more other switchover units, there is an undesirable “crosstalk” of signals from one switchover unit to another, which in turn can be indicated by corresponding error signals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention vise à mettre au point un bloc de composants d'entrée numérique (1) pour un système informatique, qui permette d'obtenir un signal numérique, tout en permettant de vérifier le mode de fonctionnement dudit bloc de composants, à partir d'une tension alternative ou continue de signal à codage binaire, se trouvant sur un contact (5) d'un transmetteur de signaux. A cet effet, il est prévu un bloc de composants d'entrée numérique (1) pour un système informatique, afin de récupérer un signal numérique issu d'une tension de signal à codage binaire, située sur un contact (5) d'un transmetteur de signaux (10), avec une unité d'entrée (15) pouvant être connectée au contact (5) ou à l'unité d'entrée (15), avec une unité d'inversion (30) reliée à l'unité d'entrée (15), qui, pour récupérer le signal numérique, applique une tension de prélèvement de zéro volt à l'unité d'entrée (15) et, pour produire un signal de vérification, applique une tension de vérification à ladite unité d'entrée (15). Le bloc de composants comprend également un opto-coupleur (20) monté dans l'unité d'entrée (15), qui communique par l'intermédiaire de redresseurs en pont (25), avec les deux entrées de l'unité d'entrée (E15a, E15b), ainsi qu'avec la sortie (A15a) de l'unité d'entrée.
PCT/DE1999/001388 1998-05-19 1999-05-05 Bloc de composants d'entree numerique Ceased WO1999060453A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
HK01106610.6A HK1036113B (en) 1998-05-19 1999-05-05 Digital input module
AT0903499A AT413307B (de) 1998-05-19 1999-05-05 Digitaleingabebaugruppe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998123441 DE19823441C1 (de) 1998-05-19 1998-05-19 Digitaleingabebaugruppe
DE19823441.4 1998-05-19

Publications (1)

Publication Number Publication Date
WO1999060453A1 true WO1999060453A1 (fr) 1999-11-25

Family

ID=7868939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001388 Ceased WO1999060453A1 (fr) 1998-05-19 1999-05-05 Bloc de composants d'entree numerique

Country Status (4)

Country Link
CN (1) CN1132082C (fr)
AT (1) AT413307B (fr)
DE (1) DE19823441C1 (fr)
WO (1) WO1999060453A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2182500A1 (fr) 2008-10-31 2010-05-05 Siemens AG Entrées numériques pour équipement électronique
CN103378847B (zh) * 2012-04-24 2016-11-23 西门子电力自动化有限公司 二进制量输入电路
CN113562017B (zh) * 2021-08-19 2023-02-28 中铁二十四局集团上海电务电化有限公司 一种铁路道岔联锁控制系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135798A (en) * 1983-02-15 1984-09-05 Gd Spa A system for monitoring the operation of input circuits to a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines
EP0494728A1 (fr) * 1991-01-11 1992-07-15 Siemens Aktiengesellschaft Circuit pour l'entrée et/ou la sortie sécurisées de données binaires
WO1997024647A1 (fr) * 1995-12-29 1997-07-10 Siemens Energy & Automation, Inc. Technique de surveillance des defaillances pour controleurs logiques programmables

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606894C2 (de) * 1996-02-13 2003-01-23 Siemens Ag Einrichtung zur signaltechnisch sicheren Steuerung und Überwachung elektrischer Verbraucher im Eisenbahnwesen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135798A (en) * 1983-02-15 1984-09-05 Gd Spa A system for monitoring the operation of input circuits to a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines
EP0494728A1 (fr) * 1991-01-11 1992-07-15 Siemens Aktiengesellschaft Circuit pour l'entrée et/ou la sortie sécurisées de données binaires
WO1997024647A1 (fr) * 1995-12-29 1997-07-10 Siemens Energy & Automation, Inc. Technique de surveillance des defaillances pour controleurs logiques programmables

Also Published As

Publication number Publication date
CN1132082C (zh) 2003-12-24
ATA903499A (de) 2005-06-15
HK1036113A1 (en) 2001-12-21
DE19823441C1 (de) 1999-07-08
AT413307B (de) 2006-01-15
CN1307697A (zh) 2001-08-08

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