EP0265836B1 - Method for entering setting commands into a computer-controlled interlocking system - Google Patents
Method for entering setting commands into a computer-controlled interlocking system Download PDFInfo
- Publication number
- EP0265836B1 EP0265836B1 EP87115470A EP87115470A EP0265836B1 EP 0265836 B1 EP0265836 B1 EP 0265836B1 EP 87115470 A EP87115470 A EP 87115470A EP 87115470 A EP87115470 A EP 87115470A EP 0265836 B1 EP0265836 B1 EP 0265836B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- text
- control commands
- operator inputs
- entered
- search
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004458 analytical method Methods 0.000 abstract description 6
- 230000006870 function Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/06—Indicating or recording the setting of track apparatus, e.g. of points, of signals
- B61L25/08—Diagrammatic displays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L19/00—Arrangements for interlocking between points and signals by means of a single interlocking device, e.g. central control
- B61L19/06—Interlocking devices having electrical operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99933—Query processing, i.e. searching
- Y10S707/99934—Query formulation, input preparation, or translation
Definitions
- the invention relates to a method for converting operator input into control commands in a computer-controlled signal box according to the preamble of patent claim 1.
- the positioning commands are given in a very specific syntactic form using alphanumeric characters in an input unit.
- a format error check is carried out before the characters entered can be converted into target information. This requires a so-called syntax analysis, a time-consuming and memory-intensive decoding process. Compliance with very specific, predetermined format requirements is essential. Changing the input to a different format is only possible together with changing most of the input software.
- the object of the invention is a method which allows a simple and independent of the input format conversion of the characters entered into commands.
- search methods as used in the invention are known in a different context (see, for example, Computer Personal, edition 12 of May 29, 1985, pages 53-56, 73).
- control commands found by means of the search method are stored together with the control inputs assigned to them, these control inputs can be compared with the text entered and the associated control commands can only be released for further use after the inputs have been found to match. This comparison eliminates ambiguities, e.g. in which the HASH code claimed in claim 2 can occur is eliminated and extensive plausibility checks are avoided which are necessary when using a syntax analysis method.
- the HASH method claimed in claim 2 is particularly suitable for the present application, because it works the fastest of all search methods and does not require too much memory.
- instruction type-specific software modules can also be configured by configuration.
- the HASH search table acts as a switch on these modules.
- Operator authorization areas and screen areas can also be configured by configuration.
- the figure shows schematically the most important function blocks of an interlocking input.
- Input devices BP1, BP2, which have an alphanumeric keyboard and various function keys for entering special commands, are assigned to a number of operator stations.
- the input devices are each connected via a bus to an EZ input line.
- the input line is a memory that stores the entered information up to a maximum number of digits.
- the content of the input line is shown on a display, not shown, for control purposes.
- search code is determined in a special module SE.
- This search code can be, for example, a so-called HASH code, which is based on the regulation is calculated, where i is the position of the respective character in the input line, m is the number of the maximum permissible Place the entered text, Ki a constant assigned to the i-th position, Wi the ASCII code of the character at the i-th position and p the length of the list containing the control commands.
- the index is now searched in a prepared index table JT in a search table ST, which contains all the permitted input texts as target texts ZT together with the target information ZJ assigned to them.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
- Selective Calling Equipment (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Electrophonic Musical Instruments (AREA)
- Control Of Electric Motors In General (AREA)
- Computer And Data Communications (AREA)
- Document Processing Apparatus (AREA)
- Control By Computers (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Feedback Control In General (AREA)
- Control Of Position Or Direction (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Umsetzung von Bedieneingaben in Steuerbefehle in einem rechnergesteuerten Stellwerk gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for converting operator input into control commands in a computer-controlled signal box according to the preamble of patent claim 1.
Aus einem Aufsatz von R.Dachwald und J.Raimer in "Signal + Draht 75" (1983), Heft 12, S. 219-223 der das Nummernstellpult NstP S800 der Firma Siemens beschreibt, ist ein Eingabeverfahren der oben genannten Art bekannt. Es ist ab Seite 221 im genannten Aufsatz beschrieben.An input method of the type mentioned above is known from an article by R.Dachwald and J.Raimer in "Signal + Draht 75" (1983), No. 12, pp. 219-223, which describes the numbering desk NstP S800 from Siemens. It is described from page 221 in the article mentioned.
Bei diesem Eingabeverfahren werden die Stellbefehle in ganz bestimmter syntaktischer Form mittels alphanumerischer Zeichen in eine Eingabeeinheit gegeben. Bevor die Umsetzung der eingegebenen Zeichen in Zielinformationen erfolgen kann, wird eine Prüfung auf Formatfehler durchgeführt. Diese erfordert eine sogenannte Syntax-Analyse, ein zeit- und speicheraufwendiges Decodierverfahren. Die Einhaltung ganz bestimmter vorgegebener Formatvorschriften ist dabei unerläßlich. Eine Umstellung der Eingabe auf ein anderes Format ist nur zusammen mit einer Änderung des größten Teiles der Eingabesoftware möglich.With this input method, the positioning commands are given in a very specific syntactic form using alphanumeric characters in an input unit. Before the characters entered can be converted into target information, a format error check is carried out. This requires a so-called syntax analysis, a time-consuming and memory-intensive decoding process. Compliance with very specific, predetermined format requirements is essential. Changing the input to a different format is only possible together with changing most of the input software.
Aufgabe der Erfindung ist ein Verfahren, das eine einfache und vom Eingabeformat unabhängige Umsetzung der eingegebenen Zeichen in Stellbefehle gestattet.The object of the invention is a method which allows a simple and independent of the input format conversion of the characters entered into commands.
Diese Aufgabe wird durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of patent claim 1.
Hierbei sind Suchverfahren,wie sie bei der Erfindung verwendet werden, in anderem Zusammenhang bekannt (siehe z.B. Computer Persönlich, Ausgabe 12 vom 29. Mai 1985, Seiten 53-56, 73).Here, search methods as used in the invention are known in a different context (see, for example, Computer Personal, edition 12 of May 29, 1985, pages 53-56, 73).
Die Verwendung eines solchen Suchverfahrens erspart eine komplizierte, zeitaufwendige, und umfangreiche Syntax-Analyse für alle Eingaben, die, wie z.B. Stellbefehlseingaben, nur wenige Zeichen enthalten. Das Syntax-Analyseverfahren braucht damit nur noch bei solchen Eingaben verwendet werden, die, wie z.B. freie Texteingaben oder vielstellige Zahleneingaben zu einer unvertretbar hohen Anzahl von Kombinationen des Eingabetextes führen würden.The use of such a search method saves a complicated, time-consuming, and extensive syntax analysis for all entries which, e.g. Command input, contain only a few characters. The syntax analysis method therefore only needs to be used for inputs that, e.g. Free text entries or multi-digit number entries would lead to an unacceptably high number of combinations of the input text.
Da die mittels des Suchverfahrens gefundenen Steuerbefehle zusammen mit den ihnen zugeordneten Bedieneingaben gespeichert sind, können diese Bedieneingaben mit dem eingegebenen Text verglichen und die zugehörigen Steuerbefehle erst nach festgestellter Übereinstimmung der Eingaben zur Weiterverwertung freigegeben werden. Durch diesen Vergleich werden Mehrdeutigkeiten, die z.B. bei dem im Anspruch 2 beanspruchten HASH-Code auftreten können, eliminiert und es werden umfangreiche Plausibilitätsprüfungen vermieden, die bei Anwendung eines Syntax-Analyse-Verfahrens notwendig sind.Since the control commands found by means of the search method are stored together with the control inputs assigned to them, these control inputs can be compared with the text entered and the associated control commands can only be released for further use after the inputs have been found to match. This comparison eliminates ambiguities, e.g. in which the HASH code claimed in claim 2 can occur is eliminated and extensive plausibility checks are avoided which are necessary when using a syntax analysis method.
Das im Anspruch 2 beanspruchte HASH-Verfahren ist für den hier vorliegenden Anwendungsfall besonders geeignet, da es von allen Suchverfahren am schnellsten arbeitet und dabei keinen zu hohen Speicherbedarf erfordert.The HASH method claimed in claim 2 is particularly suitable for the present application, because it works the fastest of all search methods and does not require too much memory.
Es können bei Verwendung des HASH-Suchverfahrens außerdem befehlsartenspezifische Software-Module durch Projektierung konfiguriert werden. Die HASH-Suchtabelle wirkt als Schalter auf diese Module. Bedienberechtigungs-Bereiche und Bild-Bereiche können ebenfalls durch Projektierung konfiguriert werden.When using the HASH search method, instruction type-specific software modules can also be configured by configuration. The HASH search table acts as a switch on these modules. Operator authorization areas and screen areas can also be configured by configuration.
Im Folgenden soll ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens anhand einer Figur ausführlich beschrieben werden.An exemplary embodiment of the method according to the invention will be described in detail below with reference to a figure.
Die Figur zeigt schematisch die wichtigsten Funktionsblöcke einer Stellwerkseingabe. Einer Anzahl von Bedienplätzen sind Eingabegeräte BP1, BP2 zugeordnet, die eine alphanumerische Tastatur und verschiedene Funktionstasten zur Eingabe besonderer Kommandos aufweisen. Die Eingabegeräte sind über einen Bus mit jeweils einer Eingabezeile EZ verbunden. Die Eingabezeile ist ein Speicher, der die eingegebene Information bis zu einer maximalen Stellenzahl aufnimmt. Der Inhalt der Eingabezeile wird zu Kontrollzwecken auf einem nicht dargestellten Display angezeigt.The figure shows schematically the most important function blocks of an interlocking input. Input devices BP1, BP2, which have an alphanumeric keyboard and various function keys for entering special commands, are assigned to a number of operator stations. The input devices are each connected via a bus to an EZ input line. The input line is a memory that stores the entered information up to a maximum number of digits. The content of the input line is shown on a display, not shown, for control purposes.
Ist eine Eingabe beendet - das Ende wird durch ein besonderes Abschlußzeichen markiert - so wird in einem besonderen Modul SE ein Suchcode ermittelt. Dieser Suchcode kann z.B. ein sogenannter HASH-Code sein, der nach der Vorschrift
berechnet wird, wobei i die Stelle des jeweiligen Zeichens in der Eingabezeile, m die Zahl der maximal zulässigen Stellen des eingegebenen Textes, Ki eine der i-ten Stelle zugeordnete Konstante, Wi der ASCII-Code des Zeichens an der i-ten Stelle und p die Länge der die Steuerbefehle enthaltenden Liste bedeuten.If an entry is finished - the end is marked by a special terminator - a search code is determined in a special module SE. This search code can be, for example, a so-called HASH code, which is based on the regulation
is calculated, where i is the position of the respective character in the input line, m is the number of the maximum permissible Place the entered text, Ki a constant assigned to the i-th position, Wi the ASCII code of the character at the i-th position and p the length of the list containing the control commands.
Mit dem ermittelten Suchcode wird nun in einer vorbereiteten Index-Tabelle JT der Index in eine Suchtabelle ST aufgesucht, die sämtliche zulässigen Eingabetexte als Zieltexte ZT zusammen mit der ihnen jeweils zugeordneten Zielinformation ZJ enthält.With the search code determined, the index is now searched in a prepared index table JT in a search table ST, which contains all the permitted input texts as target texts ZT together with the target information ZJ assigned to them.
Da nicht jedem Index nur ein einziger Zieltext zugeordnet zu sein braucht, ist es erforderlich, den gefundenen Zieltext mit dem ursprünglichen Eingabetext zu vergleichen, um sicher zu sein, daß tatsächlich die dem am Eingabegerät eingegebenen Text zugeordnete Zielinformation, die den auszuführenden Stellbefehl enthält, an die Stellwerkslogik weitergegeben wird. Dieser Vergleich wird in einem Vergleicher V durchgeführt, der die zu einem Index gefundenen Zieltexte nacheinander mit der ursprünglichen Eingabe vergleicht und bei Übereinstimmung ein Freigabesignal FS ausgibt, das die Weitergabe der Zielinformation veranlaßt. Wird zu einem Index kein Zieltext gefunden, so wird ein Fehlersignal FA generiert, das eine Fehleranalyse in Gang setzt.Since it is not necessary to assign only one target text to each index, it is necessary to compare the target text found with the original input text in order to be sure that the target information assigned to the text entered on the input device and containing the actuating command to be executed is actually available the signal box logic is passed on. This comparison is carried out in a comparator V, which compares the target texts found for an index one after the other with the original input and, if they match, outputs an enable signal FS which causes the target information to be passed on. If no target text is found for an index, an error signal FA is generated which triggers an error analysis.
Da das vorstehend beschriebene Verfahren bei sehr langen Eingabetexten wegen des erforderlichen Speicherplatzes unwirtschaftlich wird, können in einem in der Figur nicht dargestellten, der Ermittlung des Suchcodes vorgeschalteten Verfahrensschritt Eingaben, die mehr als eine bestimmte Höchstzahl von Zeichen oder bestimmte Zeichenfolgen enthalten wie z.B. freie Texteingaben oder vielstellige Zahlen, ausgesondert und gesondert verarbeitet werden.Since the method described above becomes uneconomical for very long input texts because of the required memory space, inputs which contain more than a certain maximum number of characters or certain character strings, such as e.g. Free text entries or multi-digit numbers, separated and processed separately.
Claims (3)
- Method of converting operator inputs into control commands in a computer-controlled interlocking, each of said control commands consisting of an alpha-numeric text which, after being entered, is stored temporarily and displayed for checking purposes,
characterized in
that a search code is derived from the entered and temporarily stored text by a pseudorandom technique, that all control commands corresponding to said search code, together with the operator inputs assigned to them, are successively retrieved from a list (ST) containing all control commands together with the operator inputs and search codes assigned to them, and that by a logic comparison of the retrieved operator inputs with the entered and temporarily stored text, the control command corresponding to said text is determined. - A method as claimed in claim 1, characterized in that the search code is a HASH code and satisfies the rule
- A method as claimed in claim 1 or 2, characterized in that in a step preceding the computation of the search code, operator inputs comprising more than a predetermined number of characters are separated from other operator inputs and processed separately.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3636426 | 1986-10-25 | ||
| DE19863636426 DE3636426A1 (en) | 1986-10-25 | 1986-10-25 | METHOD FOR ENTERING OPERATING COMMANDS IN A COMPUTER-CONTROLLED ACTUATOR |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0265836A2 EP0265836A2 (en) | 1988-05-04 |
| EP0265836A3 EP0265836A3 (en) | 1990-04-25 |
| EP0265836B1 true EP0265836B1 (en) | 1994-09-21 |
Family
ID=6312510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87115470A Expired - Lifetime EP0265836B1 (en) | 1986-10-25 | 1987-10-22 | Method for entering setting commands into a computer-controlled interlocking system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4864534A (en) |
| EP (1) | EP0265836B1 (en) |
| AT (1) | ATE111833T1 (en) |
| CA (1) | CA1276298C (en) |
| DE (2) | DE3636426A1 (en) |
| ES (1) | ES2064309T3 (en) |
| TR (1) | TR23807A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4255796A (en) * | 1978-02-14 | 1981-03-10 | Bell Telephone Laboratories, Incorporated | Associative information retrieval continuously guided by search status feedback |
| US4418275A (en) * | 1979-12-07 | 1983-11-29 | Ncr Corporation | Data hashing method and apparatus |
| EP0054588B1 (en) * | 1980-12-19 | 1984-09-26 | International Business Machines Corporation | Interactive data retrieval apparatus |
| US4611272A (en) * | 1983-02-03 | 1986-09-09 | International Business Machines Corporation | Key-accessed file organization |
| US4611280A (en) * | 1984-03-12 | 1986-09-09 | At&T Bell Laboratories | Sorting method |
-
1986
- 1986-10-25 DE DE19863636426 patent/DE3636426A1/en not_active Withdrawn
-
1987
- 1987-10-12 TR TR87/0718A patent/TR23807A/en unknown
- 1987-10-19 CA CA000549592A patent/CA1276298C/en not_active Expired - Lifetime
- 1987-10-21 US US07/111,939 patent/US4864534A/en not_active Expired - Fee Related
- 1987-10-22 ES ES87115470T patent/ES2064309T3/en not_active Expired - Lifetime
- 1987-10-22 DE DE3750566T patent/DE3750566D1/en not_active Expired - Lifetime
- 1987-10-22 EP EP87115470A patent/EP0265836B1/en not_active Expired - Lifetime
- 1987-10-22 AT AT87115470T patent/ATE111833T1/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| "Computer Persönlich", Ausgabe 12 vom 29.05.1985, Seiten 53-56, 73 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3750566D1 (en) | 1994-10-27 |
| DE3636426A1 (en) | 1988-05-05 |
| ATE111833T1 (en) | 1994-10-15 |
| ES2064309T3 (en) | 1995-02-01 |
| EP0265836A3 (en) | 1990-04-25 |
| CA1276298C (en) | 1990-11-13 |
| EP0265836A2 (en) | 1988-05-04 |
| US4864534A (en) | 1989-09-05 |
| TR23807A (en) | 1990-09-13 |
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