WO2000054210A1 - Systeme de transfert de donnees en serie sans contact en particulier a partir de supports d'informations mobiles a deplacement tres rapide, et utilisations preferees du systeme - Google Patents

Systeme de transfert de donnees en serie sans contact en particulier a partir de supports d'informations mobiles a deplacement tres rapide, et utilisations preferees du systeme Download PDF

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Publication number
WO2000054210A1
WO2000054210A1 PCT/DE2000/000567 DE0000567W WO0054210A1 WO 2000054210 A1 WO2000054210 A1 WO 2000054210A1 DE 0000567 W DE0000567 W DE 0000567W WO 0054210 A1 WO0054210 A1 WO 0054210A1
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WO
WIPO (PCT)
Prior art keywords
unit
data signals
mobile data
data
signal unit
Prior art date
Application number
PCT/DE2000/000567
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German (de)
English (en)
Inventor
Michael Cuylen
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 WO2000054210A1 publication Critical patent/WO2000054210A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation

Definitions

  • the principle of identification technology is based on the fact that usually a large number of mobile data carriers are connected to spatially distributed objects and contain data which e.g. identify the object or its current state.
  • stationary units are usually connected to processing and processing systems, which generally at least accept the data of a mobile data carrier located in close proximity in a contactless manner. These can also be called data receiving units or reading devices.
  • the data received in this way can be further processed in control devices of the connected processing and processing systems in order to automatically carry out a wide variety of handling or processing operations on or on the object provided with the respective data carrier.
  • changed data content e.g. be written back to the associated mobile data carrier after handling or editing an object.
  • Such stationary units can then also be called read / write devices.
  • the exchange of data signals between mobile data carriers and stationary units usually takes the form of serial bit streams, which contain coded information.
  • the bit streams are also often portioned so that they consist of a sequence of signal units with a predetermined size.
  • Each signal unit is usually constructed in two parts from a start signal unit and a subsequent useful signal unit.
  • the start signal unit consists of a characteristic sequence of synchronizing bits. After consequent detection of a complete start signal unit by a stationary unit is able to recognize a subsequent useful signal unit as such and to successfully receive and evaluate its bit sequence.
  • the signal units and their parts i.e. the start signal units and the useful signal units each have a predetermined scope, i.e. a known number of bits. Furthermore, in practice the content of a useful signal unit is often selected so that it is characteristic of the sending mobile data carrier.
  • the useful signal unit of a mobile data carrier virtually represents a number that identifies it. On the one hand, this has the consequence that the data signals sent by the mobile data carrier consist of a sequence of signal units of a predetermined size, i.e. from identical start signal units and identical useful signal units.
  • no current information is connected to the useful signal unit of a mobile data carrier. This must first be loaded by a stationary unit by using a data carrier number obtained from the useful signal unit, e.g. branches to a current data record in a data processing system. This then contains information relating to the object connected to the respective mobile data carrier.
  • the invention is based on the object of specifying a system which is capable of error-free detection of the useful signal unit of a mobile data carrier even with the shortest possible dwell time of the data carrier in the transmission range to a stationary unit.
  • the system according to the invention has the particular advantages that the total residence time of a mobile data carrier within the transmission range to a stationary unit only has to be as long as the time approximately required for the detection of a single signal unit, ie a start signal unit and a useful signal unit. It is it is thus possible for mobile data carriers to be guided past a stationary unit at a speed which is twice that of known systems within the transmission range. On the other hand, there is also the possibility of using the time saved by the invention to write updated data from a stationary unit back to a mobile data carrier that is passing as long as it is still within the transmission range.
  • FIG. 1 shows, by way of example, a block diagram of a mobile data carrier, an example of a signal unit with a start signal unit and a useful signal unit, FIG. 5 an example of two following signal units,
  • FIG. 6 shows an exemplary sequence of data signals which is sufficient for the reconstruction of a complete useful signal unit according to the invention
  • FIG. 7 shows the complete useful signal unit resulting from a reconstruction from the sequence of data signals according to FIG. 6
  • FIG. 8 shows an exemplary detailed view of the sequence of data signals according to 6 and 9 show a storage means in the form of a circulation buffer, which is rather filled with the binary data values associated with the sequence of data signals according to FIG.
  • the basic circuit diagram of a mobile data carrier 1 is shown by way of example in FIG.
  • This contains first means 9, with which data signals can at least be transmitted.
  • these means contain a transmission device with an antenna for data signals, from which a data transmission field 27 originates.
  • the data can be transmitted inductively.
  • the first means 9 can also be designed so that the transmission takes place optically or by radio. In extended versions, the first means 9 may also receive data signals and thus represent a transmitting and receiving device.
  • the signal units of the mobile data memory 1 intended for transmission are stored, for example, in an internal data memory 17, can be read out by an internal processing unit 3 via a data bus connection 19 and can be supplied to the transmitting device 9 in the first means 5 via a data bus connection 21.
  • the signal units 40, 43, 46 which are explained in more detail below using the example of FIGS. 4 to 8, have a predetermined size and contain at least one start signal unit 41, 44, 48 and one useful signal unit 42, 45.50.
  • the elements in the mobile data carrier 1 can be supplied with energy via a local battery. In the embodiment shown in FIG. 1, the supply energy is provided via an external energy transfer field 23 and received by fourth means in the internal data storage 17. In the example in FIG.
  • the energy is advantageously conducted from the receiving device 7 via a supply line 13 to a buffer unit 11, which in particular feeds the processing unit 3 via a supply line 15.
  • the energy transfer field 23 is generated by a stationary unit.
  • the energy transmission field 23 and the data transmission field can 27 represent a single electromagnetic field.
  • both transmission fields can also be designed separately, for example in the case of optical transmission.
  • FIG. 2 also shows an example of a basic circuit diagram of a stationary unit 29.
  • This has second means 32, at least for receiving data signals.
  • the flow of data signals of the mobile data carrier 1 for different positions is symbolized in FIG. 2 by arrows 27a, 27b, 27c.
  • these means 32 advantageously contain a data reception device with an antenna. In turn, data can be received inductively.
  • the second means 32 can also be designed so that the
  • the second means 32 may possibly be also send data signals and thus represent a transmitting and receiving device.
  • the stationary unit 39 also has storage means 28 for data signals and a processing unit 33.
  • data signals are acquired by the processing unit 33 via a data bus connection 34a by the data receiving device 32 and temporarily stored in the storage means 28.
  • an exemplary transmission area 23 is symbolized in a dotted line. This indicates which Approximation between a mobile data carrier 1 and a stationary unit 29 is required to successfully transfer data from the mobile data carrier to the stationary unit 29 without contact.
  • the transmission area 23 represents an energy transmission field. This is formed by the stationary unit by a transmission device 31 for energy that is fed by an energy source 35, for example a power supply unit or a regulated power supply.
  • the mobile data carrier 1 in the example of FIG. 1 does not have its own energy supply, so that it is not possible to send data signals as long as the mobile data carrier 1 is outside the energy transmission field 23, ie for example in positions 2a and 2e.
  • the mobile data carrier 1 is located entirely between the positions 2c, 2d, which makes it possible to send data signals. This is symbolized in FIG. 2 by arrows 27b, 27c, which are directed to the data receiving device 32 of the stationary unit 29.
  • the arrow 27a facing away symbolizes that the mobile data carrier 1 starts sending data signals when entering the energy transmission field 23 at position 2b, but they are still so weak in energy that they cannot be picked up by the mobile unit 29 .
  • FIG. 3a shows an example of a section from this data stream in the form of a modulated carrier frequency.
  • Binary information can be modulated in a known manner by loading the carrier oscillation and the amplitude fluctuations caused thereby.
  • the cutout in Figure 3a associated data signals and binary data values are shown in FIG. 3b below.
  • the amplitude transition 37 is interpreted as a change from a low to a high potential, which corresponds to a binary 1.
  • the amplitude transitions 38, 39 are interpreted as a change from a high to a low potential, which corresponds to a binary 0.
  • the data signals transmitted at least from a mobile data carrier to a stationary unit in a serial and contactless manner represent chains of such amplitude transitions.
  • the section of such a stream of data signals shown in FIG. 4 represents a single signal unit 40.
  • the stream of data signals consists of a sequence of such signal units which have a matching length and a matching content.
  • the signal units are constructed in at least two parts and contain a start signal unit as the first and a useful signal unit as the second part, each with a predetermined size.
  • start signal unit as the first
  • useful signal unit as the second part
  • Signal unit 40 from a sequence of eight bits with the number bl to b9, which each have the binary data value 1.
  • the receipt of a complete sequence of these data values signals a stationary unit that a useful signal unit 42 of a likewise predetermined size is connected to this start signal unit 41.
  • this comprises the bits with the numbers blO ... bl9 ... bn-1, bn.
  • These bits can have binary data values, e.g. with the aid of a Manchester code modulated useful signal.
  • this useful signal is often characteristic of the respective mobile data carrier and can therefore be regarded as a kind of "number".
  • the processing unit 33 can find related data in the stationary unit 29, e.g. to the mobile
  • FIG. 5 shows an example of two successive signal units 40, 43, each of which consists of a start signal unit 41, 44 and a useful signal unit 42, 45, for example because of local ones spatial and electrical boundary conditions in no way ensures that the start and end of the reception of data signals correspond to the start and end of signal units.
  • a mobile data carrier to a stationary unit that at least one complete signal unit comprising a start signal unit and a useful signal unit is contained therein and can be received by the stationary unit.
  • Figure 5 shows just such a range of data signals.
  • a particularly unfavorable case in known systems is when the first of the eight bits happens not to be received at the beginning of the period T1 and the start signal unit 41 is therefore not recognized by the stationary unit. The subsequent useful signal unit 42 is then not evaluated. The second useful signal unit 45 that follows can only be detected and evaluated once the second start signal unit 44 has been completely received.
  • Such a sequence 46 of data signals is shown as an example in FIG.
  • Start signal unit 48 Since the data signals transmitted before and after the start signal unit 48 each do not represent a complete useful signal unit, they are called useful signal subunits 47, 49 below.
  • the sum of the time periods T4 and T5 now advantageously corresponds, i.e. the durations of before and after the start signal unit
  • FIG. 7 A start signal unit 50 reconstructed in this way is shown in FIG. 7 and, in comparison to the same start signal units 40, 43 in FIG. 3, has a completely identical sequence of data signals and thus the same data content, scope and same time period T2.
  • FIG. 7 A start signal unit 50 reconstructed in this way is shown in FIG. 7 and, in comparison to the same start signal units 40, 43 in FIG. 3, has a completely identical sequence of data signals and thus the same data content, scope and same time period T2.
  • the first useful signal subunit 47 consists of a sequence of bits with the numbers bl4 ... bl9 ... bn-1, bn.
  • the subsequent start signal unit 48 in turn consists of a sequence of eight bits with the numbers bl to b9 and the binary data values 1.
  • the subsequent second useful signal subunit 49 has, for example, the bits with the numbers blO ... bl ⁇ .
  • FIG. 8 shows that the information of a complete useful signal unit must be maintained in the two incomplete useful signal subunits 47, 49, and this according to the invention, for example, with the aid of the bits with the numbers blO ... bl8 from the useful signal subunit 49 and the bits with the numbers bl9 ... bn-1, bn can be reconstructed from the useful signal subunit 50.
  • the invention thus has the advantage that e.g. According to the representation in FIG. 2, the duration of stay of a mobile data carrier 1 in an energy transmission field 23 of the stationary unit 29, for example by specifying a correspondingly high movement speed of the mobile data carrier 1 along the path 4, it can be shortened such that data signals in the amount of at least one signal unit can be detected by the stationary unit 29, i.e. in a e.g. shown in Figures 6, 8 scope.
  • This ensures that at least one complete signal unit can be derived from a start signal unit and a useful signal unit from the received stream of data signals.
  • the speed is advantageously chosen so high that the number of matching bits in useful signal subunits, i.e. in the example in FIG. 8, the bits with the numbers bl4 ... bl8 in the two useful signal subunits 47, 49 are as small as possible.
  • a stationary unit 29 has, according to the invention, storage means 28, in which the mobile data carrier 1 which is sent and received by a mobile data carrier 1 passing through the stationary unit 29 captured data signals 27a are at least temporarily stored.
  • the processing unit 33 in the stationary unit 29 now searches the data signals 46 in the storage means 28 to determine whether they contain a start signal unit 48. After such a start signal unit has been found, the data signals lying behind and in front of it can be recognized and further processed by the processing unit as components of useful signal partial units, ie the useful signal partial units 47, 49 lying before and after are combined to form a useful signal unit 50.
  • FIG. 9 shows a preferred embodiment of a storage medium suitable for this.
  • This is filled with exemplary binary data values b, which for reasons of clarity largely correspond to the sequence of data signals 46 shown in FIG. 8.
  • the bits bl4 ... bn of the first useful signal subunit 47 are in a middle memory area, ie approximately in the area of the memory cells ADR_x-l to ADR_2, the bits bl ... b9 of the start signal unit 48, and in a lower memory area, ie approximately in the area of the memory cells ADR_1 and ADR_0, contain the bits blO ...
  • the processing unit can now detect the chain of the 8 binary 1 and thus the start signal unit by checking all the memory cells, for example starting at the memory cell at the bottom right. The end and the beginning of the data bits belonging to the preceding and following useful signal subunits are thus also determined. Since the size of a useful signal subunit, ie the number of associated data bits, is predetermined and thus known, the processing unit can determine the memory cells belonging to a complete useful signal unit and thus their contents to form a closed useful signal unit by simple arithmetic combinations of the numbers of memory cells put together.
  • the storage means 28 is advantageously dimensioned such that data signals can be temporarily stored therein, at least to the extent of a signal unit 40.
  • the size of the storage means can largely correspond to the scope of one signal unit.
  • the size of the storage means is thus advantageously matched to the scope of the data signals required to carry out an evaluation according to the invention.
  • this advantageously facilitates the acquisition of the data signals from mobile data memories.
  • this makes it possible to design the memory particularly advantageously in the form of a circular buffer.
  • the content of the memory there when executed as a circulation buffer, can be rearranged in a simple manner, for example, in such a way that bits bl - b9 of the start signal unit are in the upper area of the
  • Memory i.e. from the memory cells ADR_y, and the bits of a useful signal unit are connected in the following memory cells until the memory end at ADR_0. This simplifies the process of the evaluation process.
  • a system according to the present invention can be used particularly advantageously in a wide variety of sorting systems.
  • Goods provided with mobile data memories 1 are presented at high speed on a stationary unit 29 connected in the sorting system.
  • the sorting system is advantageously a letter sorting system that runs as quickly as possible.
  • the goods provided with mobile data stores 1 can be mail pieces, i.e. Each piece of mail is immediately provided with a mobile data storage device.
  • transport containers which e.g. contain mail pieces intended for a specific destination address, be provided with mobile data memories 1.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Cette invention concerne un système de transfert de signaux de données entre des supports de données mobiles (1) et des unités fixes (29). Le support de données mobile présente des moyens permettant d'émettre les signaux de données, qui comportent des unités de signal faites d'une unité de signal de départ et d'une unité de signal utile (42). L'unité fixe présente des moyens (32) de réception des signaux de données, des moyens de stockage (28) et une unité de traitement. Cette unité de traitement (33) recherche, dans les signaux de données se trouvant dans le moyen de stockage, une unité de signal de départ, et reconstruit, à partir des unités de signal utile précédant et suivant ladites unité de signal de départ, une unité de signal utile.
PCT/DE2000/000567 1999-03-11 2000-02-28 Systeme de transfert de donnees en serie sans contact en particulier a partir de supports d'informations mobiles a deplacement tres rapide, et utilisations preferees du systeme WO2000054210A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19910875A DE19910875A1 (de) 1999-03-11 1999-03-11 System zur berührungslosen, seriellen Übertragung von Daten aus insbesondere schnell bewegten, mobilen Datenträgern, und bevorzugte Verwendungen des Systems
DE19910875.7 1999-03-11

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WO2000054210A1 true WO2000054210A1 (fr) 2000-09-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10214188B4 (de) * 2002-03-28 2005-08-25 Siemens Ag Verfahren zur gesicherten Übertragung von Daten, insbesondere zur Übertragung über eine Luftschnittstelle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7443877B2 (en) 2002-02-28 2008-10-28 Siemens Aktiengesellschaft Method for coding a sequence of data bits, in particular for transmission via an air interface
ATE303635T1 (de) * 2002-02-28 2005-09-15 Siemens Ag Verfahren zur kodierung einer sequenz von datenbits, insbesondere zur übertragung über eine luftschnittstelle
EP1662421A1 (fr) * 2004-11-29 2006-05-31 Siemens Aktiengesellschaft Méthode de communication radio entre un lecteur et au moins un porteur de données mobile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691202A (en) * 1984-04-03 1987-09-01 Denne Phillip R M Identification systems
EP0600556A1 (fr) * 1992-11-30 1994-06-08 N.V. Nederlandsche Apparatenfabriek NEDAP Système d'identification comportant un algorithme d'identification amélioré
WO1998011496A1 (fr) * 1996-09-13 1998-03-19 Temic Telefunken Microelectronic Gmbh Technique de transfert de donnees dans un systeme d'identification a balayage
WO1999006161A1 (fr) * 1997-08-01 1999-02-11 Kiroku Kato Systeme perfectionne de distribution de paquets et de courrier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691202A (en) * 1984-04-03 1987-09-01 Denne Phillip R M Identification systems
EP0600556A1 (fr) * 1992-11-30 1994-06-08 N.V. Nederlandsche Apparatenfabriek NEDAP Système d'identification comportant un algorithme d'identification amélioré
WO1998011496A1 (fr) * 1996-09-13 1998-03-19 Temic Telefunken Microelectronic Gmbh Technique de transfert de donnees dans un systeme d'identification a balayage
WO1999006161A1 (fr) * 1997-08-01 1999-02-11 Kiroku Kato Systeme perfectionne de distribution de paquets et de courrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10214188B4 (de) * 2002-03-28 2005-08-25 Siemens Ag Verfahren zur gesicherten Übertragung von Daten, insbesondere zur Übertragung über eine Luftschnittstelle

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