EP0700732B1 - Kodierungssystem, um Laufwagen in einem Kettenverholsystem auf dem Boden nach ihrer Bestimmung zu schicken - Google Patents

Kodierungssystem, um Laufwagen in einem Kettenverholsystem auf dem Boden nach ihrer Bestimmung zu schicken Download PDF

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Publication number
EP0700732B1
EP0700732B1 EP95202197A EP95202197A EP0700732B1 EP 0700732 B1 EP0700732 B1 EP 0700732B1 EP 95202197 A EP95202197 A EP 95202197A EP 95202197 A EP95202197 A EP 95202197A EP 0700732 B1 EP0700732 B1 EP 0700732B1
Authority
EP
European Patent Office
Prior art keywords
floor
encoding system
trolleys
code
chain
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
Application number
EP95202197A
Other languages
English (en)
French (fr)
Other versions
EP0700732A1 (de
Inventor
Rudi Marcel Anna Vanhoutte
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.)
Elektriciteit voor Goederenbehandeling Marine en Industrie in het verkort EGEMIN NV
Original Assignee
Elektriciteit voor Goederenbehandeling Marine en Industrie in het verkort EGEMIN NV
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 Elektriciteit voor Goederenbehandeling Marine en Industrie in het verkort EGEMIN NV filed Critical Elektriciteit voor Goederenbehandeling Marine en Industrie in het verkort EGEMIN NV
Publication of EP0700732A1 publication Critical patent/EP0700732A1/de
Application granted granted Critical
Publication of EP0700732B1 publication Critical patent/EP0700732B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination
    • B07C3/003—Destination control; Electro-mechanical or electro- magnetic delay memories
    • B07C3/005—Destination control; Electro-mechanical or electro- magnetic delay memories the transport holders of objects being provided with means for storing the destination signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination
    • B07C3/10—Apparatus characterised by the means used for detection ofthe destination
    • B07C3/12—Apparatus characterised by the means used for detection ofthe destination using electric or electronic detecting means

Definitions

  • the invention concerns an encoding system for sending trolleys to their destination in a floor chain haulage system in which trolleys are moved by means of chains which are worked into metal chain rails in the floor, whereby the encoding system contains transponders mounted on the trolleys which can emit a code and, at least in one place along the floor chain path for the trolleys, code reading means which contain a spool mounted in the floor.
  • the code reading means are for example erected before a bifurcation of the floor chain path and are connected to a control device which determines the path to be followed by the trolleys and for example controls the position of a switch on the bifurcation.
  • Such encoding systems are used in the place of mechanical systems which contain magnetic pins which are adjustable in height and which are mounted on the trolleys. Sensors which are situated in the floor can detect the position of these magnetic pins. From this position can then be derived the destination.
  • the number of codes is limited and the construction is expensive and voluminous.
  • the code reading means consist of one spool worked into the floor.
  • the transponder works electro-magnetically with a frequency of 100 kHz or more. Due to the presence of a large amount of metal of the trolley, the transponder can only work over a small distance, and the spool must be situated right underneath the transponder during the identification of the code. Consequently, the application in floor chain haulage systems is difficult. Because the spool is situated right or left to the chain rail, also the transponder must be mounted right or left on the trolley. As a result, one must reckon with the tracking of the trolley, for example in or behind a bend.
  • the invention aims to remedy these disadvantages and to provide an encoding system for sending trolleys in a floor chain haulage system to their destinations, with which the code of the destination of a trolley can be set in a simple manner, the code of the transponders can be clearly read by the code reading means and no tracking problems occur.
  • the code reading means on the above-mentioned place along the floor chain path, contains two spools which are connected in phase, including one on each side of the chain rail, whereby the metal chain rail functions as a flux conductor, whereby the transponders are of the inductive type with an adjustable code and whereby at least a transmitter and receiver part thereof is mounted above the chain rail.
  • the combination of two spools and the chain rail as a flux conductor provides for an increase of the field intensity in the area above the chain rail. Because of this, and thanks to the inductive transponders, it is possible to mount the transponder centrally in relation to the width of the trolley. Practically, the transponders have an operating frequency which is lower than 100 kHz.
  • the transponder on a trolley contains a setting part with knobs, and the code of this transponder can be set by means of these knobs.
  • the knobs for setting the code allow for a setting without any extra means and allow for a visual recognition of the code and thus of the destination.
  • the used transponders usually have a fixed code, which implies that the spool in fact identifies the trolley and the destination must be found indirectly via a control device.
  • Electronically encodable transponders are known with which a code corresponding to the destination could possibly be emitted, but a special programming device is required to change the code. In both cases, the destination of the trolley is not visually shown to the users.
  • the spools are mounted in a bin of flux-conducting metal which is worked into the floor.
  • the signal intensity above the chain rail is even intensified.
  • the encoding system mainly consists, as is represented in the figures 1 and 2, of an inductive transponder 1 on each trolley 2 and of code reading means 3 working in conjunction with it which are mounted in one or several places along the floor chain path 4 before the trolleys in the floor 5.
  • the floor chain path 4 is formed in the usual manner of U-shaped chain rails 6 of flux-conducting metal such as steel, which are countersunk in the floor 5 and in which driven chains 7 are provided. A number of links of the chains 7 are catch links.
  • the trolleys 2 contain a pin 8 at the front which reaches into a chain rail 6 and is caught by a catch link, so that, by means of the pin 8, the trolley 2 is taken along by the chain 7.
  • the floor chain path 4 contains bifurcations, so that it reaches several destinations. At each bifurcation is mounted a switch 9 whose position can be changed by a control device 10 as a function of the destination which an arriving trolley 2 must reach and which is set by means of the transponder 1.
  • This transponder 1 contains a transmitter and receiver part 11 which is connected by means of a cable 12 to the setting part 13 provided with knobs 14.
  • the transmitter and receiver part 11 is mounted to the lower front of the trolley, right behind the front wheels 20, some two to twenty centimetres from the floor 5.
  • This transmitter and receiver part 11 contains an electronic circuit mounted on a printed circuit-board which is worked into a disc-shaped synthetic housing.
  • the operating frequency of the transponder 1 is lower than 100 kHz and preferably lower than 60 kHz, and is for example 50 kHz.
  • the transmitter and receiver part 11 receives a signal from the code reading means 3, it transmits a signal in turn, namely a code in digital pulse width modulation.
  • This code is determined by the setting part 13 and can be set by means of the knobs 14.
  • the knobs are preferably turning knobs. They are situated at the front side of a case in which the setting part 13 is situated, so that the position of the knobs 14 is clearly visible to the user. Thanks to this position, the set code can be visually recognized from a distance.
  • a code is determined by the position of all knobs 14 together, so that the number of possible code combinations depends on the number of possible positions per knob and the number of knobs. With two knobs 14 and six positions can be realized 36 different codes corresponding to 36 destinations.
  • the code reading means 3 are formed of two synthetic plates 15 which each contain a spool 16.
  • the spools 16 are connected by means of a cable 17 to the electronics 18 required to transmit the above-mentioned signal to the transponders 1 and to receive the response signals or codes from the transponders 1 via the control devices 10 or a central control which is connected to these control devices 10.
  • the two spools 16 are connected in phase.
  • the synthetic plates 15 are not mounted directly in the floor 5, but they form a lid of a metal bin 19 which is worked into the floor, as is represented in detail in figure 3.
  • the encoding system works as follows.
  • the user sets the code corresponding to a specific destination for each trolley 2.
  • code reading means 3 which continuously or intermittently transmit a signal.
  • the transmitter and receiver part 11 of the transponder 1 mounted upon it receives a signal from the spools 16, so that, as a answer, this transmitter and receiver part 11 will transmit the set code inductively in the form of a modulated signal.
  • This code is read by the code reading means 3 at a speed of for example 70 ms per code and sent to the control device 10 which will either or not change the position of the switch 9.

Landscapes

  • Platform Screen Doors And Railroad Systems (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Near-Field Transmission Systems (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Traffic Control Systems (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Control Of Conveyors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (9)

  1. Kodierungssystem, um Laufwagen (2) in einem Flurkettenfördersystem zu ihrer Bestimmung zu schicken, worin Laufwagen (2) mittels Ketten (7), die in Kettengleise (6) aus Metall im Fußboden (5) eingearbeitet sind, bewegt werden, wobei das Kodierungssystem auf den Laufwagen (2) montierte Transponder (1), die einen Kode aussenden können und, zumindest an einer Stelle entlang der Flurkettenstrecke (4) für die Laufwagen (2), Kodelesmittel (3) umfaßt, die eine im Fußboden (5) montierte Spule (16) besitzen, dadurch gekennzeichnet, daß die Kodelesmittel (3), an der oben erwähnten Stelle entlang der Flurstrecke (4), zwei Spulen (15) umfaßt, die phasenverbunden sind, einschließlich einer an jeder Seite des Kettengleises (6), wobei das Kettengleis (6) aus Metall als Fluxleiter fungiert, wobei die Transponder (1) vom induktiven Typ mit einem einstellbaren Kode sind und wobei zumindest ein Sende- und Empfangsteil (11) davon über dem Kettengleis (6) montiert ist.
  2. Kodierungssystem gemäß dem vorangehenden Anspruch, dadurch gekennzeichnet, daß die induktiven Transponder (1) eine Arbeitsfrequenz von weniger als 100 kHz haben.
  3. Kodierungssystem gemäß dem vorangehenden Anspruch, dadurch gekennzeichnet, daß der Transponder (1) ein Einstellteil (13) mit Knöpfen (14) an einem Laufwagen (2) umfaßt und daß der Kode dieses Transponders (1) mittels dieser Knöpfe (14) eingestellt werden kann.
  4. Kodierungssystem gemäß dem vorangehenden Anspruch, dadurch gekennzeichnet, daß die Knöpfe (14) Drehknöpfe sind.
  5. Kodierungssystem gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Sende- und Empfangsteil (11) des Transponders (1) am Boden eines Laufwagens (2) montiert ist, aus der Bewegungsrichtung gesehen, direkt hinter den Vorderrädern (20), und, von der Breite her gesehen, zentral montiert ist.
  6. Kodierungsssystem gemäß den Ansprüchen 2 und 4, dadurch gekennzeichnet, daß das Einstellteil (13) eines Transponders (1) an der Vorderseite des Laufwagens (2) montiert ist, mit den Knöpfen (14) nach vorn, und mittels eines Kabels (12) mit dem Sende- und Empfangsteil (11) verbunden ist.
  7. Kodierungssystem gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Spulen (15) in einem Verschlag (19) aus fluxleitendem Metall, der in den Fußboden (2) eingearbeitet ist, montiert sind.
  8. Kodierungssystem gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Arbeitsfrequenz des Transponders (1) niedriger als 60 kHz ist.
  9. Kodierungssystem gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Spulen (16) in eine synthetische Platte (15) eingebettet sind.
EP95202197A 1994-09-06 1995-08-12 Kodierungssystem, um Laufwagen in einem Kettenverholsystem auf dem Boden nach ihrer Bestimmung zu schicken Expired - Lifetime EP0700732B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9400795A BE1008716A3 (nl) 1994-09-06 1994-09-06 Kodeersysteem voor het naar hun bestemming sturen van transportwagens in een vloerkettingtransportsysteem.
BE9400795 1994-09-06

Publications (2)

Publication Number Publication Date
EP0700732A1 EP0700732A1 (de) 1996-03-13
EP0700732B1 true EP0700732B1 (de) 1999-10-20

Family

ID=3888334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95202197A Expired - Lifetime EP0700732B1 (de) 1994-09-06 1995-08-12 Kodierungssystem, um Laufwagen in einem Kettenverholsystem auf dem Boden nach ihrer Bestimmung zu schicken

Country Status (12)

Country Link
EP (1) EP0700732B1 (de)
JP (1) JPH08104421A (de)
AT (1) ATE185712T1 (de)
AU (1) AU3024995A (de)
BE (1) BE1008716A3 (de)
CZ (1) CZ227795A3 (de)
DE (2) DE69512857T2 (de)
DK (1) DK0700732T3 (de)
ES (1) ES2086281T3 (de)
GR (1) GR3032450T3 (de)
HU (1) HUT73107A (de)
PL (1) PL177796B1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6097411A (ja) * 1983-10-31 1985-05-31 Shin Kobe Electric Mach Co Ltd 無人搬送車用操舵信号検出装置
NL8400688A (nl) * 1984-03-02 1985-10-01 Nederlanden Staat Inrichting voor het aanbrengen van een optisch leesbare code op een voorwerp, in het bijzonder een transportbak.
JPS61176688A (ja) * 1985-01-31 1986-08-08 Toshiba Corp 移動機の自動運転制御装置
NL8700369A (nl) * 1987-02-16 1988-09-16 Nedap Nv Werkwijze voor het plaatsen van een elektronische responder in een omgeving van metaal.
ZA892468B (en) * 1988-04-11 1989-12-27 Uniscan Ltd Improvements in or relating to cutting elements foactuator and communication system r rotary drill bits

Also Published As

Publication number Publication date
DE700732T1 (de) 1996-11-07
HU9502517D0 (en) 1995-10-30
ES2086281T3 (es) 2000-03-01
BE1008716A3 (nl) 1996-07-02
CZ227795A3 (en) 1996-07-17
PL177796B1 (pl) 2000-01-31
ATE185712T1 (de) 1999-11-15
PL310276A1 (en) 1996-03-18
DE69512857D1 (de) 1999-11-25
GR3032450T3 (en) 2000-05-31
EP0700732A1 (de) 1996-03-13
ES2086281T1 (es) 1996-07-01
DE69512857T2 (de) 2000-05-18
AU3024995A (en) 1996-03-21
DK0700732T3 (da) 2000-04-17
JPH08104421A (ja) 1996-04-23
HUT73107A (en) 1996-06-28

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