WO2009065791A1 - Système pour ajuster, régler et/ou programmer des appareils électroniques, notamment des appareils de mesure, qui présentent des capteurs, et circuit électrique pour ajuster, régler ou programmer des éléments électroniques, comme des potentiomètres numériques - Google Patents

Système pour ajuster, régler et/ou programmer des appareils électroniques, notamment des appareils de mesure, qui présentent des capteurs, et circuit électrique pour ajuster, régler ou programmer des éléments électroniques, comme des potentiomètres numériques Download PDF

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Publication number
WO2009065791A1
WO2009065791A1 PCT/EP2008/065633 EP2008065633W WO2009065791A1 WO 2009065791 A1 WO2009065791 A1 WO 2009065791A1 EP 2008065633 W EP2008065633 W EP 2008065633W WO 2009065791 A1 WO2009065791 A1 WO 2009065791A1
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WO
WIPO (PCT)
Prior art keywords
programming
circuit arrangement
setting
operating voltage
arrangement according
Prior art date
Application number
PCT/EP2008/065633
Other languages
German (de)
English (en)
Inventor
Robert Buck
Original Assignee
Robert Buck
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 Robert Buck filed Critical Robert Buck
Publication of WO2009065791A1 publication Critical patent/WO2009065791A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4072—Drivers or receivers

Definitions

  • the invention relates to a system for balancing, adjusting and / or programming of electronic devices, in particular measuring devices, which have sensors, according to the preamble of patent claim 1, and a circuit arrangement for adjusting, adjusting or programming of electronic elements, such as digital potentiometers, which already within Furthermore, the invention relates to a use of the presented system and the circuit arrangement for adjusting, setting or programming of electronic elements.
  • electronic devices in particular measuring devices which have sensitive sensors, must be calibrated or calibrated prior to commissioning or device delivery in order to compensate for manufacturing or material-related tolerances.
  • an existing on a circuit balancing resistor, z. B. is designed as a thin or thick film resistor, a trimming be subjected using a laser beam. A resistance value changed in this case by laser trimming can no longer be reset to the original resistance value due to irreversible material removal.
  • the system should provide the possibility that both subsequently a calibration or adjustment process can be triggered as There is also a wide setting range.
  • the system and the associated circuit arrangement for matching, adjusting or programming should be able to be implemented with a small additional number of components, for which purpose certain components or assemblies must be assigned a double function.
  • the object of the invention is achieved by a system for balancing, setting and / or programming of electronic devices, in particular measuring devices having sensors, according to the feature combination according to claim 1 and with a circuit arrangement for adjusting, setting or programming of electronic elements, such as digital potentiometers, which are already electrically connected and connected within a device circuit, according to the feature combination according to claim 14, wherein the dependent claims represent at least expedient refinements and developments.
  • the system according to the invention for the adjustment, adjustment and / or programming of electronic devices comprises a balancing or programming module.
  • the trimming or programming module has outputs for providing the operating voltage for the respective electronic device and includes means for impressing at least a higher current or voltage value via a control unit of the operating voltage.
  • This device can, for. B. be an auxiliary power supply.
  • the measuring devices can have both binary and analog sensors, wherein the sensors are designed, for example, as 2- or 3-wire sensors, optical, capacitive, inductive or pressure sensors.
  • the system comprises a programming or setting signal generator, which has inputs for the operating voltage to be looped, which lead to outputs to which the electronic device to be calibrated can be connected. Between the operating voltage inputs there is a series connection of at least two Zener diodes. At least one Zener diode has at least one resistor or resistance network connected in parallel. Furthermore, an evaluation or value-adding module is connected to the resistor or to the resistor network, to whose at least one output the setting and programming variables supplied via the increased operating voltage values are decoded.
  • the at least one output of the evaluation unit can then be connected to a programming signal input of the electronic device.
  • This programming signal input may be the input for activating a digital potentiometer.
  • the value-adding module may include a counter which, when triggered, provides output values that are applied to the digital potentiometer to trigger the "up" adjustment, eg, when the desired operating distance or analog voltage or current value at the output is reached
  • the counter may be in communication with a downstream A / D converter which provides digital adjustment signals for the potentiometer.
  • adjustment and programming module and the programming and setting signal generator are designed as separate modules.
  • the calibration and programming module can be removed.
  • the usual operating voltage is again applied to the inputs of the programming and setting signal generator for the operating voltage to be looped through so that the relevant electronic device can perform its desired function.
  • the adjustment and programming module is reconnected to the corresponding inputs of the programming or set-up signal generator.
  • the adjustment and programming module provides not only the increased voltage for programming, but also the actual operating voltage and has a related power supply unit.
  • the programming and setting signal generator with the electronic device form a structural unit or be part of the same.
  • defined clock and chip select signals can be provided for programming one or more digital potentiometers.
  • the operating unit of the adjustment and programming module has switching devices or buttons, which are in communication with a power supply which is able to provide a higher than the respective operating voltage of the electronic device.
  • the switching device or button can with typical programming or adjustment functions such. B. up, down or the like.
  • the higher voltage values for the purpose of adjustment or programming can be timed in a variant or temporally limited generated and impressed.
  • the resistor or the resistor network is part of the evaluation unit, which in turn can be designed as a replaceable module.
  • the evaluation unit comprises at least one R-C element, wherein a decoding of the setting and programming variables is performed over the respective charging time or discharge time of the R-C elements.
  • the evaluation unit can generate or decode different addresses or data for programming or setting the electronic device from the length of overvoltage pulses.
  • Zener diode protective circuit For the signal supply according to the invention, a necessary or already existing Zener diode protective circuit can be used, so that according to the object of the invention, the number of components can be reduced.
  • the voltage supplied to the signal generation or the impressed current does not affect the functionality of the connected electronic device.
  • the inventive circuit arrangement for adjusting, setting or programming of electronic elements which are functionally electrically integrated and connected within a device circuit, wherein the adjustment or adjustment signal is supplied via the electrical operating voltage leads, comprises a series circuit of Zener diodes as Operating voltage protection circuit, wherein at least one Zener diode at least one resistor is connected in parallel, which has at least one tap.
  • This at least one tap is associated with a value-adding module.
  • the evaluation module derives setting and programming variables as a function of voltages dropping across the resistor (s) connected in parallel.
  • the evaluation module may have timers, in particular R-C members, in one embodiment variant of the circuit arrangement. Such a timer can be used for interference suppression.
  • Additional R-C links may be associated with the programming inputs of a digital potentiometer.
  • a digital potentiometer Depending on the design of the resistors or the capacitors of the respective R-C member different charging times can be set for each programming input, so that at an applied overvoltage the inputs, z. B. a digital potentiometer, are switched to the time periods set over the charging times.
  • the Zener diode is connected in parallel with a resistor network or a resistor cascade, wherein taps are present here, each communicating with a switching transistor in connection.
  • the switching transistors change into the conductive state as a function of the voltages dropping across the resistor network or the resistor cascade, so that a subassembly arranged downstream of the respective switching transistors can then be activated.
  • This subordinate assembly can, for. As an operational amplifier, Schmitt trigger or the like.
  • At least one output of this downstream module signals for setting a programmable potentiometer and / or an opener or closer can be tapped.
  • the series connection of zener diodes has at least two zener diodes which divide the safety zener voltage.
  • the zener voltage of the second zener diode is substantially smaller than the zener voltage of the first zener diode.
  • the mentioned resistor network is connected in parallel with the second Zener diode and has at least two resistors connected in series with taps on the partial resistors, which are then in each case connected to the base of one of the downstream switching transistors.
  • Between the switching transistors may be located a latch-off circuit to prevent simultaneous switching of the transistors.
  • a bandpass filter comprising at least one resistor and at least one capacitor between the output of the respective switching transistor and the input of the associated downstream module.
  • the bandpass can be used for interference suppression.
  • a diode At the output of at least one switching transistor, a diode can be connected to charge a buffer in the form of a capacitor, so that a switching signal over a certain time holds.
  • a resistor connected in parallel with the capacitor connected to the diode there is the possibility that a resistor connected in parallel with the capacitor connected to the diode.
  • the above-described circuit arrangement can be integrated in the evaluation and operating electronics of an inductive or magnetic (GM R-ZeIIe) proximity switch.
  • GM R-ZeIIe inductive or magnetic
  • the circuit arrangement for, even subsequent, balancing, setting or programming of electronic potentiometers that are functionally electrically integrated and connected within a device circuit, especially in device circuits for inductive, non-contact sensors, such as the aforementioned proximity switches.
  • FIG. 1 shows a block diagram of the system according to the invention for adjusting, setting and / or programming electronic devices
  • FIG. 2 shows a block diagram of a proximity switch, which has an inductive sensor, and wherein the circuit arrangement according to the invention is integrated into the evaluation and operating electronics, and with a connectable balancing module;
  • FIG. 3 shows an embodiment in which different voltages / currents are impressed onto the operating voltage line, for example via push-button T, and wherein switching transistors are used to obtain the setting and programming signals;
  • FIG. 4 shows an arrangement similar to that of Figure 3, but with the possibility of driving or programming an opener / closer.
  • 5 shows a further embodiment in which internal switching signals for setting and / or programming can be triggered over the duration of an applied overvoltage;
  • FIG. 6 shows a simplified variant of the possibility of signal provision for programming an electronic potentiometer P, which can be set via a single input SDI;
  • Fig. 7 is a view similar to that of FIG. 5, but without analog output of the sensor, and
  • FIG. 8 exemplarily control signals for operating the circuit arrangement according to FIG. 5, wherein depending on the length of the overvoltage pulse different inputs or addresses of a digital potentiometer can be controlled.
  • the system for adjusting, setting and / or programming of electronic devices EC on a matching or programming module APM which has outputs for providing the operating voltage U B + and UB- for the respective electronic device EG.
  • the adjustment or programming module APM also has a device to control at least a higher current or voltage value impressed via a control unit BE the operating voltage Ub +.
  • a programming or setting signal generator PEG which has inputs for the operating voltage UB to be looped, which lead to outputs to which the electronic device EG can be connected.
  • Zener diodes Dl and D2 are present between the operating voltage inputs. At least one of the Zener diodes, here D2, a resistor R or a resistor network is connected in parallel. Furthermore, a Wertevorga- bebeuxx is connected to the resistor R or the resistor network, at whose at least one output over the adjustment values and programming variables supplied to the increased operating voltage values are decoded.
  • the at least one output of the evaluation unit AW can be connected to at least one programming signal input of the electronic device EG.
  • the adjustment and programming module APM and the programming and setting signal generator PEG are executable as separate modules.
  • the programming and setting signal generator PEG with the electronic device EC form a component or a part thereof.
  • the operating unit BE has switching devices or buttons which are connected to a power supply which is able to supply higher than the respective operating voltage UB of the electronic device EG.
  • the switching devices can be assigned with typical programming or adjustment functions, such as Up or Down, and marked accordingly.
  • a proximity switch NS which has at least one inductive sensor IS, equip it so that it has an integrated Wertevorgabebauuite WV and the aforementioned series circuit of the Zener diodes Dl and D2 with a corresponding tap on the diode D2.
  • the matching and programming module APM can then be connected as required to this so-trained proximity switch NS.
  • the adjustment and programming module APM automatically generates either "up” or “down” signals following a pending signal A and thus sets the desired set value at output A analog or digital while the overvoltage or higher current value is active.
  • the value delivery assembly WV (see FIG. 1) may be a microprocessor that drives electronic assemblies, including an electronic potentiometer, to effect adjustment of output values.
  • Zener diodes D1 and D2 are likewise present in all the exemplary embodiments shown, which on the one hand represents an operating voltage protective circuit and which on the other hand serves to generate setting and programming signals.
  • the effect is used that an increased operating voltage forces the zener diode D1 into the conducting state. This results in a voltage drop across the diode D2. Differently increased operating voltages result in different currents. Due to the rather flat characteristic curve of the zener diode D2, different voltages drop across the diode D2. It is therefore an evaluation of various switching thresholds using a transistor arrangement Tl, T2 and T4 possible. About a logical combination of the output signals of the transistors can then z. B. for triggering an up or down function of the potentiometer P are derived.
  • the Zener diode D2 has two resistors R 1 and R 2 connected in series in parallel. At the connection node between the first and second series-connected zener diode Dl and D2, a further resistor R3 is connected. The resistor R3 leads to the base of the switching transistor T4. At the connection point of the series connection of the resistors Rl and R2, the base of the transistor T2 and connected via a further resistor, the base of the transistor Tl. The collector of the transistor Tl leads to the base of the transistor T4. The collector of the transistor T4 and the collector of the transistor T2 are guided via a series resistor to the operating potential. Depending on the overvoltage, signals can be provided via the transistor circuit, which signals are supplied to a value-selecting module WV in the form of a decoder. This module WV provides the necessary signals for programming the digital potentiometer P.
  • the collectors of the transistors T2 and T4 either lead directly to the input of the evaluation or it is possible, an R- C-member, z. B. interpose at the collector of the transistor T2, so that here a signal buffer is created.
  • a diode or a diode connected transistor T3 is still present.
  • the capacitor CS which is connected via a resistor to the collector of the transistor T4 and the associated input of the evaluation unit, serves to suppress interference pulses in the sense of a bandpass filter.
  • the respectively impressed higher voltages or currents are specified with a balancing or programming module.
  • This module may include a power source or the auxiliary power supply HN.
  • the desired voltage as a setting signal triggering value or pulse is released via a series connection of a diode DN or DN 'with a resistor RN or RN'.
  • Proximity switch necessary background current can be detected in one embodiment by means of a current sensor SS and considered as the base value GW by the auxiliary power supply HN. In particular, the current is determined by means of the current sensor SS before each boost pulse and quasi increased during operation of the auxiliary power supply.
  • FIG. 4 The circuit arrangement according to FIG. 4 is similar to that according to the preceding explanation according to FIG. 3, wherein the switching signals are used to control or programming an opener / closer ⁇ S.
  • Fig. 5 shows another embodiment in which internal programming or tuning signals may be triggered over the duration of the applied excessive voltage.
  • the inductive sensor connected to the digital potentiometer still has an analog output adjacent to the binary output to determine the extent to which the adjustment of the digital potentiometer DP has been successful for calibration purposes.
  • the corresponding analog and binary outputs of the sensor are routed to the calibration and programming module in order to be able to carry out a result check.
  • FIG. 6 A simplified variant for setting a digital potentiometer DP via only one input is shown in FIG. 6.
  • the connection point of the series connection of the Zener diodes D1 and D2 there is only one RC element with correspondingly determined charging behavior, which is connected to the one input SDI of the digital potentiometer in FIG Connection stands.
  • FIG. 8 shows examples of control signals for the circuit arrangement according to FIG. 5, wherein different inputs or addresses of the digital potentiometer DP can be controlled in dependence on the length of the overvoltage pulse. If necessary, the inputs of the digital potentiometer can be preceded by a logic circuit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electronic Switches (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

L'invention concerne un système pour ajuster, régler et/ou programmer des appareils électroniques, notamment des appareils de mesure, qui présentent des capteurs. Selon l'invention, il est prévu un module d'ajustement ou de programmation qui présente des sorties pour fournir la tension de service de l'appareil électronique respectif et qui contient un dispositif pour, de manière commandée via une unité de commande, imprimer à la tension de service au moins une valeur supérieure d'intensité ou de tension. Il est en outre prévu un générateur de signaux de programmation ou de réglage qui possède des entrées pour la tension de service à faire passer, entrées qui mènent à des sorties auxquelles peut être raccordé l'appareil électronique, sachant qu'un montage en série de diodes Zéner est présent entre les entrées de tension de service et qu'une résistance ou un réseau de résistances est monté en parallèle avec au moins une diode Zéner. De plus, une unité d'interprétation est raccordée à la résistance ou au réseau de résistances, à la ou les entrées de laquelle sont présentes sous une forme décodée les grandeurs de réglage ou de programmation apportées via les valeurs augmentées de tension de service. L'invention concerne en outre un circuit électrique pour ajuster, régler ou programmer des éléments électroniques, comme des potentiomètres numériques, qui sont déjà raccordés et électriquement reliés conformément à leur fonction à l'intérieur d'un circuit d'appareil, sachant que le signal d'ajustement ou de réglage est dirigé via les lignes électriques d'alimentation en tension de service.
PCT/EP2008/065633 2007-11-19 2008-11-17 Système pour ajuster, régler et/ou programmer des appareils électroniques, notamment des appareils de mesure, qui présentent des capteurs, et circuit électrique pour ajuster, régler ou programmer des éléments électroniques, comme des potentiomètres numériques WO2009065791A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102007055209.4 2007-11-19
DE102007055209 2007-11-19
DE102008024296 2008-05-20
DE102008024296.9 2008-05-20
DE102008056184.3 2008-11-06
DE102008056184 2008-11-06

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WO2009065791A1 true WO2009065791A1 (fr) 2009-05-28

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PCT/EP2008/065633 WO2009065791A1 (fr) 2007-11-19 2008-11-17 Système pour ajuster, régler et/ou programmer des appareils électroniques, notamment des appareils de mesure, qui présentent des capteurs, et circuit électrique pour ajuster, régler ou programmer des éléments électroniques, comme des potentiomètres numériques

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DE (1) DE102008057725B4 (fr)
WO (1) WO2009065791A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10566971B2 (en) 2017-08-23 2020-02-18 Honeywell International Inc. Adaptive proximity sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104808563B (zh) * 2015-04-29 2017-08-04 山东工商学院 一种高精度可编程电阻合成电路设定方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335475A1 (de) * 1983-09-30 1985-05-02 ANT Nachrichtentechnik GmbH, 7150 Backnang Schalter mit in serie geschalteten feldeffekttransistoren
US4536667A (en) * 1981-10-14 1985-08-20 Sharp Kabushiki Kaisha Reset pulse generator
SU1411932A1 (ru) * 1987-01-07 1988-07-23 Предприятие П/Я А-1389 Генератор симметричных пр моугольных импульсов
DE102005013731A1 (de) * 2005-03-22 2006-09-28 Wenglor sensoric elektronische Geräte GmbH Elektrischer Schaltkreis für einen Näherungsschalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536667A (en) * 1981-10-14 1985-08-20 Sharp Kabushiki Kaisha Reset pulse generator
DE3335475A1 (de) * 1983-09-30 1985-05-02 ANT Nachrichtentechnik GmbH, 7150 Backnang Schalter mit in serie geschalteten feldeffekttransistoren
SU1411932A1 (ru) * 1987-01-07 1988-07-23 Предприятие П/Я А-1389 Генератор симметричных пр моугольных импульсов
DE102005013731A1 (de) * 2005-03-22 2006-09-28 Wenglor sensoric elektronische Geräte GmbH Elektrischer Schaltkreis für einen Näherungsschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10566971B2 (en) 2017-08-23 2020-02-18 Honeywell International Inc. Adaptive proximity sensor

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DE102008057725B4 (de) 2020-10-15
DE102008057725A1 (de) 2009-05-20

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