EP2017678B1 - Procédé et dispositif de transmission de signaux d'un dispositif de mesure de position vers une unité d'évaluation - Google Patents

Procédé et dispositif de transmission de signaux d'un dispositif de mesure de position vers une unité d'évaluation Download PDF

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EP2017678B1
EP2017678B1 EP08007259A EP08007259A EP2017678B1 EP 2017678 B1 EP2017678 B1 EP 2017678B1 EP 08007259 A EP08007259 A EP 08007259A EP 08007259 A EP08007259 A EP 08007259A EP 2017678 B1 EP2017678 B1 EP 2017678B1
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Prior art keywords
reference pulse
signal
position signals
state
signals
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German (de)
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EP2017678B2 (fr
EP2017678A1 (fr
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Johannes Wagner
Elmar Mayer
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Dr Johannes Heidenhain GmbH
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Dr Johannes Heidenhain GmbH
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control

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  • the invention relates to a method and a device for transmitting position signals and reference pulses as well as an error state indicating warning signals from a position-measuring device to an evaluation unit according to the preamble of claims 1 and 9.
  • a position measuring device is used to determine the relative position of two mutually movable objects, for example, two mutually movable machine parts of a machine tool.
  • a material measure for example in the form of a scale graduation, connected to one and a scanning unit with the other of the two objects, so that can be determined by scanning the scale division, the extent of movement of the two objects to each other along the scale division.
  • the generation of position signals by means of the position measuring device takes place by scanning, for example by optical scanning, the scale division by means of a transducer of the position measuring device during the relative movement of the scanning unit and the scale division.
  • the respective position of the one object with respect to the other object can be detected either in the form of an absolute position using a scale division formed by a code track or in the form of relative position changes using an incremental, periodic scale division ,
  • the generation of the different types of position signals can be effected by using optical, magnetic, inductive or capacitive scanning units.
  • an incremental position measuring device for position measurement produced by sampling a periodic scale division by means of the sampling on the output side at least two mutually phase-shifted, periodic analog position signals that are evaluated to determine the relative position of the graduation scale and the scanning in an evaluation unit, for example, from a numerical control of a Machine tool exists.
  • the incremental position signals generated by the position measuring device are transmitted in parallel form to the downstream evaluation unit via two or four signal transmission lines, depending on the type of transmission.
  • the position measuring device delivers two position signals which are phase-shifted by 90 ° in the case of a single-ended transmission.
  • an inverse position signal is additionally transmitted from the position measuring device to the evaluation unit for each of the two position signals which are phase-shifted by 90 °.
  • reference pulses are transmitted from the position measuring device to the evaluation unit, which are generated by linking reference pulse signals derived from reference marks on the graduation scale with the position signals.
  • a reference pulse is transmitted via a further signal transmission line to the evaluation unit and further processed there, while at a differential Transmission two further signal transmission lines are provided, via which a reference pulse and an inverted reference pulse are transmitted.
  • the position measuring device can issue a warning signal to the evaluation unit if, for example, the permissible signal amplitudes are undershot or other events which jeopardize safe operation occur, that of a position measuring device connected to or integrated in the position measuring device Warning signal donating monitoring unit are detected.
  • a warning signal from the position measuring device to the evaluation is transmitted via an additional output of the position measuring device and an additional warning signal transmission line, a single-ended signal to the evaluation, which assumes a high level, for example, in the normal state, when transmitting rectangular warning signals with logical high and low levels, while the warning state corresponds to a low level.
  • all the outputs of the position measuring device can be switched to high impedance for warning signal output, so that in the warning state instead of the differential signals present only signals with the same level, which detects the subsequent electronics of the evaluation as error state.
  • This type of transmission of a warning signal has the advantage that the warning signal does not need its own warning signal transmission line and that in addition also a line break the warning signal transmission line can be detected, since in this case the follower electronics of the evaluation unit is present a low level, which corresponds to a warning state.
  • a major disadvantage of this type of transmission of a warning signal is that in the warning state, the transmission of all signals is interrupted and provided with the position measuring machine must be stopped immediately.
  • the object of the present invention is to specify a method and a device of the type mentioned above, which require no additional signal transmission line for the transmission of a warning signal and also enables a transmission of the position signals and the reference pulses in the warning state.
  • the solutions of the invention require no additional signal transmission line for transmitting a warning signal from the position measuring device to the evaluation and thus meet the requirement to keep the cost of required signal connections as low as possible and to ensure compatibility with the usual number of signal transmission lines.
  • the inventive method and the device according to the invention ensure that the incremental position signals and reference pulses can continue to be transmitted in the warning state, so that the machine equipped with the position measuring device does not have to be stopped immediately when a warning state occurs.
  • the solutions according to the invention are based on the idea of using the warning signal using the existing signal transmission lines for the transmission of the position signals and reference pulses, preferably the signal transmission lines of the reference pulses, in a single-ended transmission or in a differential transmission, in that a state combination of the position signals and reference pulses which is invalid in normal operation for the output of the reference pulse is used for the distinction between a reference pulse and a warning signal signaling a warning state.
  • the output of the warning signal is possible both in a single-ended transmission and in a differential transmission, wherein in a single-ended transmission two phase-offset position signals and one with the phase-shifted position signals in error-free normal operation periodically occurring valid state combinations associated reference pulse is transmitted from the position measuring device to the evaluation, while at a differential transmission at least four incremental position signals, each with two phase position offset by 90 ° first position signals and two to the first position signals inverted second position signals and one in error-free normal operation to periodically occurring valid state combinations with the first position signals associated first reference pulse and in each case one in error-free normal operation to periodically occurring valid state combinations associated with the second position signals second reference pulse to be transmitted.
  • the evaluation unit Since the evaluation unit detects the slow speed or the standstill of the machine by the transmission of position signals and reference pulses, it evaluates the transmission of warning signals at slow feed or standstill of the machine as an alarm signal that leads to shutdown of the machine and / or one with appropriate programming corresponding acknowledgment of the alarm signal requires. After a manual acknowledgment and / or removal of the error state associated with the separate alarm message, the controller returns to the normal state.
  • a device for transmitting substantially rectangular position signals and reference pulses and an error condition indicating warning signals from a position measuring device for determining the position of two relatively movable parts of a machine via signal transmission lines to an evaluation unit wherein the position measuring device comprises a logic unit consisting of scanning signals of an incremental graduation scale graduation phase-offset incremental position signals and a reference pulse generated from reference marks of the scale graduation and the position signals is characterized in that the logic unit generates the reference pulse RI from the phase-shifted, incremental position signals P1, P2 and from the reference marks of the scale graduation such that in the error-free state in Each state valid and invalid for the output of the reference pulse RI state combinations occur, and one an error state indicating warning signal WRN during an error-free state for the output of the reference pulse RI invalid state combination of the position signals P1, P2 and the reference pulse RI in the signal transmission from the position measuring device to the evaluation unit, and that the evaluation unit has an error detection unit that during a fault-free State for the output of the reference pulse RI invalid state combination of the position signals P1,
  • the logic unit determines the valid state combinations from the combination of the position signals with the base reference pulses to the reference pulses and this link the program of the evaluation is known, the evaluation recognizes a fault condition during the occurrence of a signal during an invalid state combination and can be a preprogrammed response, for example Immediately stop the machine.
  • This form of information transmission from the position measuring device to the evaluation unit can be further refined by the fact that, in the event of a transmission of a warning signal exceeding a predetermined signal length, the machine is stopped immediately, while if the warning signal has a signal length which is less than the predetermined signal length, only an optical and / or acoustic signal, optionally coupled with an indicating the cause of error indicator corresponding to the respective signal length, is triggered.
  • the logic unit On the output side, the logic unit is connected to an input of a reference pulse driver module or a differential driver.
  • the error detection unit is connected on the input side to outputs of signal receivers or differential signal receivers of the evaluation unit for the phase-shifted incremental position signals and reference pulses and the output side to a signal output unit.
  • At least three signal transmission lines are arranged between the position measuring device and the evaluation unit, on which two phase-shifted incremental position signals and one associated with the incremental position signals reference pulse of the position measuring device to the evaluation unit are transmittable or arranged at least six signal transmission lines on which two phase-shifted incremental position signals and two incremental position signals inverted thereto and each one associated with the phase-shifted incremental position signals and the incremental position signals associated thereto reference pulse from the position measuring device to the evaluation are transferable.
  • Fig. 1 shows a block diagram of a position measuring system with a position measuring device 1, which comprises a scale graduation 2 and a scanning unit 3 movable relative thereto.
  • the position measuring device 1 generates position signals P1, P2 and a reference pulse RI linked to the position signals P1, P2, which signals are transmitted via signal transmission lines 51, 53, 55 to an evaluation unit 4.
  • the graduation scale 2 and the scanning unit 3 are connected, for example, to mutually movable parts of a machine tool whose relative position is to be determined to each other, while the evaluation unit 4 consists for example of a numerical machine tool control or integrated into it.
  • the solution according to the invention can also be used in position measuring systems with rotational movements of the mutually movable parts.
  • the graduation scale 2 for example in the form of a glass scale, contains an incremental graduation 21 with a predetermined graduation period and reference marks 22.
  • the generation of the position signals P1, P2 and reference pulses RI can be performed using optical or photoelectric, magnetic, inductive or capacitive sensing principles with appropriate graduation scale design 2 and the scanning unit 3 done.
  • the graduation scale of a glass scale with a graduated graduation as incremental graduation and reference mark consist, which is associated with a scanning plate at a small distance to the glass scale.
  • a parallel light beam generated by a semiconductor light source projects a plurality of scanning fields of the scanning plate onto the glass scale, behind the scanning fields associated with the photodiodes are arranged.
  • the pitch of the scanning fields is the same as that on the glass scale and aligned parallel thereto, relative movement of the glass scale and the scanning plate modulates the transmitted luminous flux which in the photodiodes varies with the intensity of light varying in the glass scale as a result of the opaque lines a corresponding electric current is converted.
  • the signals of the photodiodes can be phase-shifted. These signals can be converted into square-wave signals using circuit means known per se.
  • a reflection or incident light method can be used in which the scale consists of a nontransparent material to which the graduation of a highly reflective material is applied.
  • the sampling unit 3 includes a position signal generation unit 5 which outputs two incremental signals 90 ° out of phase as position signals P1, P2, and a reference pulse generation unit 6 which generates a rectangular base from a reference mark 22 detected by the sampling unit 3 and the resulting analog reference pulse signal Reference pulse RI 'forms.
  • the position signal generation unit 5 and the reference pulse generation unit 6 comprise a plurality of light sources, scanning structures on the graduation scale 2 and optoelectronic detector elements when using the photoelectric measuring principle.
  • the reference pulse RI thus generated is transmitted from the logic unit 7 via a driver module 33 and a signal transmission line 55 to a signal receiver 43 of the evaluation unit 4. At the same time sets the logic unit 7 so that the valid state combination in the transmission of the reference pulse RI.
  • Fig. 2 shows from top to bottom pulse diagrams of the base reference pulse RI ', the base warning signal WRN', the two phase-shifted by 90 ° and formed as rectangular pulses position signals P1 and P2 and from the above-described combination of the base reference pulse RI 'with the position signals P1 and P2 formed reference pulse RI over the phase angle ⁇ .
  • a state combination invalid in normal operation or in the fault-free state of the signal generation for the output of the reference pulse RI results thus deviating from the above condition.
  • a monitoring unit 8 arranged in or connected to the scanning unit 3, upon detection of a fault condition, for example when the signal amplitudes fall below a permissible signal amplitude, supplies a base warning signal WRN 'to the input side both with the outputs of the position signal generating unit 5 and with the output of the reference pulse signal.
  • Generation unit 6 connected logic unit 7 from.
  • the rectangular warning signal WRN is output to the evaluation unit 4 via the further driver module 33 and the signal transmission line 55 for the reference pulse RI.
  • the evaluation unit 4 comprises, in addition to the signal receivers 41, 42, 43, an input side with the outputs of the signal receivers 41, 42, 43 connected error detection unit 10, the output side of which is connected to a signal output unit 9.
  • the signal output unit 9 is connected, for example, to or integrated in a numerical machine tool control and has a monitor or is connected to optical and / or acoustic signal transmitters.
  • the error detection unit 10 is used to detect valid and for the output of the reference pulse RI invalid state combinations of the position signals P1, P2 and the reference pulse RI and indicates at a in the range of an invalid for the output of the reference pulse combination RI base warning signal WRN 'a warning signal WRN the signal output unit 9 of the evaluation unit 4, which outputs a suitable optical and / or acoustic signal or engages in the numerical machine tool control.
  • Fig. 1 schematically illustrated block diagram is essentially the explanation of the functional relationship in the detection, generation and transmission of the position signals P1 and P2, the base reference pulse RI ', the reference pulse RI, the base warning signal WRN' and the warning signal WRN.
  • the individual components of the position-measuring device 1 and evaluation unit 4 can deviate from the in Fig. 1 illustrated embodiment and linked together.
  • the reference pulse generating unit 6 can be integrated into the logic unit 7, which additionally monitors the signal amplitudes of the scanning signals and reference marks in order to detect, for example, falling below predetermined signal amplitudes for an error message.
  • the error detection unit 10 can be integrated into the signal output unit 9 with corresponding logic modules.
  • Fig. 3 illustrated in the form of a schematic block diagram, which is essentially the block diagram a position measuring system with a single-ended transmission according to Fig. 1 , is consistent, so that reference is made to the above description.
  • 90 ° out of phase incremental signals are output as position signals P1, P2 to downstream first and second differential drivers 34, 35 from the two position signals P1 and P2 both position signals P1 +, P2 + and this inverted position signals P1-, P2- generate and transmitted via a total of four signal transmission lines 51 to 54 in parallel to first and second differential receiver 44, 45 of the evaluation unit 4.
  • the position measuring device 1 thus provides with a relative movement of graduation scale 2 and scanning unit 3 two phase-shifted by 90 ° incremental and to each of the two phase-shifted incremental an inverted incremental signal, which is also transmitted to the evaluation unit 4 for further processing via the signal transmission lines 51 to 54.
  • the base reference pulse RI' is in the downstream logic unit 7 with the Position signals P1, P2 to the reference pulse RI as described above in connection with the description of the circuit according to Fig. 1 linked and delivered to a downstream third differential driver 36 of the sampling unit 3, which generates from the reference pulse RI a reference pulse RI + and a reference pulse RI- inverted thereto.
  • Both reference pulses RI + and RI- are transmitted via signal transmission lines 55, 56 to the inputs of a third differential receiver 46 of the evaluation unit 4, which at its output formed from the reference pulse RI + and the inverted reference pulse RI- reference pulse RI to the signal output unit 9 and error detection unit 10th the evaluation unit 4 outputs.
  • the solution according to the invention thus makes it possible to transmit a warning signal WRN or WRN + and WRN- from the position measuring device 1 to the downstream evaluation unit 4 using only the existing signal transmission lines 51 to 53 or 51 to 56 in the case of a single-ended transmission as well as a differential signal transmission that no additional cabling is required.
  • the compatibility with the number of previous connections between the position-measuring device 1 and the evaluation unit 4 is ensured and the warning signal WRN or the warning signals WRN + and WRN can or can in the warning state with continuous transmission of the position signals P1, P2; P1 +, P1-, P2 +, P2- and the reference pulse RI; RI +, RI-, so that the machine controlled by the position measuring system does not have to be stopped immediately when a warning condition occurs.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Control Of Position Or Direction (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (17)

  1. Procédé pour la transmission de signaux de position et d'impulsions de référence ainsi que de signaux d'avertissement indiquant un état d'erreur par un appareil de mesure de position pour déterminer la position de deux parties, mobiles l'une par rapport à l'autre, d'une machine à une unité d'analyse,
    caractérisé en ce que
    les impulsions de référence (R1 ; R1+, R1-) sont associées avec les signaux de position (P1, P2 ; P1+, P1- ; P2+, P2-) de telle sorte que des combinaisons d'état valables dans l'état sans erreur dans chaque période et non valables pour la sortie de l'impulsion de référence (R1 ; R1+, R1-) apparaissent et que les signaux d'avertissement (WRN) indiquant un état d'erreur sont transmis pendant une combinaison d'état, non valable dans l'état sans erreur pour la sortie de l'impulsion de référence (R1 ; R1+, R1-), des signaux de position (P1, P2 ; P1+, P1- ; P2+, P2-) et impulsions de référence (R1 ; R1+, R1-).
  2. Procédé selon la revendication 1, caractérisé en ce que les signaux d'avertissement (WRN) sont transmis à des lignes de transmission de signaux (55, 56) de l'impulsion de référence (R1) ou des impulsions de référence (R1 ; R1+, R1-).
  3. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins deux signaux de position (P1, P2) sensiblement rectangulaires, décalés en phase et incrémentiels sont générés à partir de signaux de balayage d'une division incrémentielle (21) d'une division d'échelle (2) de l'appareil de mesure de position (1), en ce que les impulsions de signal de, référence analogiques sont déduits de repères de référence (22) de la division d'échelle (2) et des impulsions de référence de base (R1') rectangulaires sont formées, en ce qu'un signal d'avertissement de base (WRN') est généré lors de la détection d'un état d'erreur, en ce que les signaux de position (P1, P2) et impulsions de référence de base (R1') sont associés pour une combinaison d'état valable en impulsions de référence (R1) selon la condition suivante : Rlʹ = High ET P ⁢ 1 OU P ⁢ 2 = High
    Figure imgb0020
    et en ce que les signaux de position (P1, P2) sont associés avec le signal d'avertissement de base (WRN') et en ce qu'un signal d'avertissement (WRN) est émis si la condition suivante : WRNʹ = High ET P ⁢ 1 = P ⁢ 2 = Low
    Figure imgb0021
    est satisfaite.
  4. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé par une transmission monophasée de deux signaux de position (P1, P2) décalés en phase et d'une impulsion de référence (R1) associée avec les signaux de position (P1, P2) décalés en phase dans le mode normal sans erreur pour former des combinaisons d'état valables et apparaissant de façon périodique.
  5. Procédé selon au moins l'une quelconque des revendications précédentes 1 à 4, caractérisé par une transmission différentielle d'au moins quatre signaux de position (P1+, P1-, P2+, P2-) incrémentiels avec à chaque fois deux premiers signaux de position (P1+, P2+) décalés en phase de 90° et deux seconds signaux de position (P1-, P2-) inversés par rapport aux premiers signaux de position (P1+, P2+) et à chaque fois un premier signal d'impulsion dé référence (R1+) associé avec les premiers signaux de position (P1+, P2+) dans le mode normal sans erreur pour former des combinaisons d'état valables et apparaissant périodiquement et à chaque fois un second signal d'impulsion de référence (R1-) associé avec les seconds signaux de position (P1-, P2-) dans le mode normal sans erreur pour former des combinaisons d'état valables et apparaissant périodiquement.
  6. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que, en cas d'avancement lent ou à l'arrêt de la machine, on détermine le temps qui s'est écoulé depuis l'apparition de la combinaison d'état non valable pour la transmission de l'impulsion de référence (R1), et, lors du dépassement d'un laps de temps prédéfini et de l'apparition d'un signal d'avertissement (WRN) indiquant un état d'erreur, un signal d'alarme est transmis de façon forcée à l'unité d'analyse (4).
  7. Procédé selon la revendication 6, caractérisé en ce que, pour la transmission du signal d'alarme, la combinaison d'état non valable pour la transmission de l'impulsion de référence (R1) est forcée et le signal d'alarme est transmis comme un signal d'avertissement.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que l'unité d'analyse (4) demande un acquittement lors de la réception d'un signal d'avertissement avant qu'elle revienne dans le mode de commande normal
  9. Dispositif pour la transmission de signaux de position et d'impulsions de référence sensiblement rectangulaires et de signaux d'avertissement indiquant un état d'erreur par un dispositif de mesure de position pour la détermination de la position de deux parties, mobiles l'une par rapport à l'autre, d'une machine par des lignes de transmission de signaux à une unité d'analyse, l'appareil de mesure de position présentant une unité de logique qui, à partir de signaux de balayage d'une division incrémentielle d'une division d'échelle, émet des signaux de position décalés en phase et incrémentiels et une impulsion de référence générée à partir de repères de référence de la division d'échelle et des signaux de position,
    caractérisé en ce que
    l'unité de logique (7) génère l'impulsion de référence (R1) à partir des signaux de position (P1, P2) décalés en phase et incrémentiels et à partir des repères de référence de la division d'échelle de telle sorte qu'il apparaît des combinaisons d'état valables dans l'état sans erreur dans chaque période et non valables pour la sortie de l'impulsion de référence (R1) et insère un signal d'avertissement (WRN) indiquant un état d'erreur pendant une combinaison d'état, non valable dans l'état sans erreur pour la sortie de l'impulsion de référence (R1), des signaux de position (P1, P2) et de l'impulsion de référence (R1) dans la transmission de signal de l'appareil de mesure de position (1) à l'unité d'analyse (4), et en ce que l'unité d'analyse (4) présente une unité de reconnaissance d'erreur (10) qui élimine par filtrage le signal d'avertissement (WRN) transmis pendant une combinaison d'état, non valable dans l'état sans erreur pour la sortie de l'impulsion de référence (R1), des signaux de position (P1, P2) et de l'impulsion de référence (R1) à la sortie de la transmission du signal.
  10. Dispositif selon la revendication 9, caractérisé en ce que, comme combinaison d'état non valable des signaux de position (P1, P2) et de l'impulsion de référence (R1), on applique la condition suivante : Rl = High ET P ⁢ 1 = P ⁢ 2 = Low .
    Figure imgb0022
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que l'unité de logique (7) est reliée cotée entrée
    - à une unité de génération de signal de position (5), qui génère les signaux de position (P1, P2) incrémentiels et décalés en phase à partir des signaux de balayage de la division incrémentielle (21) de la division d'échelle (2) et les envoie à l'unité de logique (7),
    - à une unité de génération d'impulsion de référence (6), qui détecte les repères de référence (22) de la division d'échelle (2) et forme une impulsion de référence de base (R1') rectangulaire à partir du signal d'impulsion de référence analogique résultant et l'envoie à l'unité de logique (7), et
    - à une unité de contrôle (8), qui génère un signal d'avertissement de base (WRN') lors de la détection d'un état d'erreur et l'envoie à l'unité de logique (7),
    en ce que l'unité de logique (7) associe les signaux de position (P1, P2) à l'impulsion de référence de base (R1') et envoie une impulsion de référence (RI), lorsque la condition suivante Rlʹ = High ET P ⁢ 1 OU P ⁢ 2 = High
    Figure imgb0023
    est satisfaite,
    et en ce que l'unité de logique (7) associe les signaux de position (P1, P2) au signal d'avertissement de base (WRN') et envoie un signal d'avertissement (WRN) lorsque la condition suivante : WRNʹ = High ET P ⁢ 1 = P ⁢ 2 = Low
    Figure imgb0024
    est satisfaite.
  12. Dispositif selon au moins l'une quelconque des revendications 9 à 11 précédentes, caractérisé en ce que l'unité de logique (7) est reliée côté sortie à une entrée d'un composant driver d'impulsion de référence (33) ou d'un driver de différence (36).
  13. Dispositif selon au moins l'une quelconque des revendications 9 à 12 précédentes, caractérisé en ce que l'unité de reconnaissance d'erreur (10) est reliée côté entrée à des sorties de récepteurs de signaux (41 - 43) ou des récepteurs de signal de différence (44 - 46) de l'unité d'analyse (4) pour les signal de position (P1, P2 ; P1+, P1- ; P2+, P2-) et impulsions de référence (R1 ; R1+, R1-) incrémentielles et décalées en phase et côté sortie à une unité de sortie de signal (9).
  14. Dispositif selon au moins l'une quelconque des revendications 9 à 12 précédentes, caractérisé en ce qu'entre l'appareil de mesure de position (1) et l'unité d'analyse (4) sont disposées au moins trois lignes de transmission de signal (51 - 53), sur lesquelles les signaux de position (P1, P2) et l'impulsion de référence (R1) et, pendant la combinaison d'état non valable dans l'état sans erreur pour la sortie de l'impulsion de référence (R1), le signal d'avertissement (WRN) indiquant un état d'erreur peuvent être transmis de l'appareil de mesure de position (1) à l'unité d'analyse (4).
  15. Dispositif selon au moins l'une quelconque des revendications 9 à 13, caractérisé en ce qu'entre l'appareil de mesure de position (1) et l'unité d'analyse (4) sont disposées au moins six lignes de transmission de signal (51 - 56), sur lesquelles deux signaux de position (P1+, P2+) incrémentiels et décalés en phase ainsi que deux signaux de position (P1-, P2-) incrémentiels, décalés en phase et inversés par rapport aux premiers signaux, une impulsion de référence (R1+) et une impulsion de référence (R1-) inversée par rapport à la première et, pendant la combinaison d'état non valable dans l'état sans erreur pour la sortie des impulsions de référence (Rl+, R1-), les signaux d'avertissement indiquant un état d'erreur et les signaux d'avertissement (WRN+ ; WRN-), inversés par rapport aux premiers signaux, peuvent être transmis de l'appareil de mesure de position (1) à l'unité d'analyse (4).
  16. Dispositif selon au moins l'une quelconque des revendications 9 à 15 précédentes, caractérisé en ce que l'unité de logique (7) contient un étage temporel qui est amorcé avec l'apparition d'une combinaison d'état non valable pour la transmission de l'impulsion de référence et envoie après un laps de temps prédéfini un signal à une première entrée d'un élément ET, dont la seconde entrée peut être alimentée avec un signal d'avertissement (WRN) et qui envoie un signal d'alarme lorsqu'un signal s'applique sur les deux entrées.
  17. Dispositif selon la revendication 16, caractérisé en ce que, pour la transmission du signal d'alarme, la combinaison d'état non valable pour la transmission de l'impulsion de référence (R1) est forcée et le signal d'alarme est transmis comme un signal d'avertissement.
EP08007259.8A 2007-07-12 2008-04-12 Procédé et dispositif de transmission de signaux d'un dispositif de mesure de position vers une unité d'évaluation Not-in-force EP2017678B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007033009A DE102007033009A1 (de) 2007-07-12 2007-07-12 Verfahren und Vorrichtung zur Übertragung von Signalen von einer Positionsmesseinrichtung zu einer Auswerteeinheit

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EP2017678A1 EP2017678A1 (fr) 2009-01-21
EP2017678B1 true EP2017678B1 (fr) 2009-09-30
EP2017678B2 EP2017678B2 (fr) 2019-05-29

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US (1) US7847704B2 (fr)
EP (1) EP2017678B2 (fr)
JP (1) JP5490381B2 (fr)
CN (1) CN101344388B (fr)
AT (1) ATE444503T1 (fr)
DE (2) DE102007033009A1 (fr)

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DE102011083042A1 (de) 2010-11-29 2012-05-31 Dr. Johannes Heidenhain Gmbh Überwachungseinheit und Verfahren zur Überwachung von Positionssignalen inkrementaler Positionsmesseinrichtungen
CN102930346B (zh) * 2012-10-15 2016-05-04 庞善臣 一种soa服务平均故障间隔时间预测方法
DE102013209019A1 (de) * 2013-05-15 2014-11-20 Dr. Johannes Heidenhain Gmbh Verfahren zur Übertragung von Daten zwischen einer Positionsmesseinrichtung und einer zugeordneten Verarbeitungseinheit sowie Positionsmesseinrichtung hierfür
US10184807B2 (en) * 2016-09-26 2019-01-22 Infineon Technologies Ag True-power-on and diagnostic-capable incremental interface for angular sensors
US10379530B2 (en) * 2016-11-04 2019-08-13 Infineon Technologies Ag Signal protocol fault detection system and method
DE102018000510A1 (de) 2017-02-02 2018-08-02 Sew-Eurodrive Gmbh & Co Kg Verfahren und Vorrichtung zum Überwachen der Spursignale eines Positionsänderungssensors
DE102017205267A1 (de) * 2017-03-29 2018-10-04 Dr. Johannes Heidenhain Gmbh Positionsmesseinrichtung und Verfahren zum Betreiben einer Positionsmesseinrichtung

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DE3323281A1 (de) † 1983-06-28 1985-01-10 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Verfahren und anordnungen zur fehlerueberwachung bei einer messeinrichtung
JPH0750992B2 (ja) † 1987-08-20 1995-05-31 株式会社安川電機 Ａｃサ−ボ用エンコ−ダ
DE19639316A1 (de) * 1996-09-25 1998-03-26 Heidenhain Gmbh Dr Johannes Positionsmeßsystem und Meßverfahren
DE19711216C1 (de) * 1997-03-18 1998-05-07 Heidenhain Gmbh Dr Johannes Verfahren und Vorrichtung zur Übertragung von Daten zwischen einer Positionsmeßeinrichtung und einer Auswerteeinheit
DE19711215C1 (de) * 1997-03-18 1998-05-07 Heidenhain Gmbh Dr Johannes Verfahren und Vorrichtung zur Umschaltung zwischen verschiedenen Ausgangssignal-Arten einer Positionsmeßeinrichtung
DE10130938A1 (de) * 2001-06-27 2003-01-23 Heidenhain Gmbh Dr Johannes Positionsmesseinrichtung und Verfahren zum Betrieb einer Positionsmesseinrichtung
DE10224627A1 (de) * 2002-06-04 2003-12-24 Heidenhain Gmbh Dr Johannes Verfahren zur seriellen Datenübertragung zwischen einer Positionsmesseinrichtung und einer Verarbeitungseinheit
DE202005018989U1 (de) † 2005-12-05 2007-04-12 Pepperl & Fuchs Programmierbarer Inkrementalweggeber

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CN101344388A (zh) 2009-01-14
DE102007033009A1 (de) 2009-01-15
JP5490381B2 (ja) 2014-05-14
ATE444503T1 (de) 2009-10-15
US7847704B2 (en) 2010-12-07
CN101344388B (zh) 2012-11-14
JP2009020112A (ja) 2009-01-29
EP2017678B2 (fr) 2019-05-29
EP2017678A1 (fr) 2009-01-21
US20090015423A1 (en) 2009-01-15
DE502008000126D1 (de) 2009-11-12

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