EP1920302A1 - Simulateur de capteur - Google Patents

Simulateur de capteur

Info

Publication number
EP1920302A1
EP1920302A1 EP06777766A EP06777766A EP1920302A1 EP 1920302 A1 EP1920302 A1 EP 1920302A1 EP 06777766 A EP06777766 A EP 06777766A EP 06777766 A EP06777766 A EP 06777766A EP 1920302 A1 EP1920302 A1 EP 1920302A1
Authority
EP
European Patent Office
Prior art keywords
sensor
simulator
signals
interface
signal
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.)
Withdrawn
Application number
EP06777766A
Other languages
German (de)
English (en)
Inventor
Wolfgang Babel
Detlev Wittmer
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.)
Endress and Hauser Conducta GmbH and Co KG
Original Assignee
Endress and Hauser Conducta Gesellschaft fuer Mess und Regeltechnik mbH and Co KG
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 Endress and Hauser Conducta Gesellschaft fuer Mess und Regeltechnik mbH and Co KG filed Critical Endress and Hauser Conducta Gesellschaft fuer Mess und Regeltechnik mbH and Co KG
Publication of EP1920302A1 publication Critical patent/EP1920302A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system

Definitions

  • the present invention relates to a test device for process equipment, or for measuring sections in process equipment, in particular a sensor simulator.
  • a measuring path designates the transmission path of a primary sensor signal, which depends on a parameter to be measured, to a unit downstream of the sensor which receives the sensor signal or a processed sensor signal in order to further process it or to process it to react.
  • These measuring sections often include transducers or converter modules which are connected to a sensor module via suitable interfaces and which process the primary signal of the sensor module and forward it in another form.
  • German Patent Application 100 55 090.8 discloses a connector for connecting a sensor module to a transmitter or to a measuring section, wherein the connector comprises an interface with galvanically separated transmission of signals and energy from the transmission line to the sensor.
  • the sensor must accordingly be equipped with a minimum of electronic circuits in order to be able to modulate the carrier signal transmitted via the interface by means of load modulation in order to transmit measured data. Equally, the converter must be able to evaluate the transmitted data.
  • a potentiometric sensor in particular a pH sensor, which has a memory element for storing calibration data, history data and logistic information. These data are made available to a transducer suitable for the sensor via a suitable interface, so that the converter can take these into account in the evaluation of the sensor signal transmitted by the sensor.
  • the interface can in turn be a galvanically isolated interface of the type described above.
  • published patent application DE 103 22 278 A1 discloses a simulator for testing a transmitter with a transmitter interface, wherein the sensor simulator outputs a simulator interface which can be connected to the converter interface and outputs signals to the converter and / or signals from the converter receives; and a control circuit for simulating signals forming the output signal at the simulator interface.
  • the simulator may further comprise a signal input which may be connected to a communication output of the converter to allow feedback of the converter signals.
  • the simulated signals can simulate measured values, status data or calibration data.
  • the simulator may include a memory module having the functionality of a sensor memory module, wherein the control circuit is adapted to generate signals for initialization of read and / or write commands by the converter.
  • the interface of the simulator may include a galvanically isolated interface.
  • the simulator may be integrated into a sensor, and the control circuit may trigger a test routine by simulating sensor conditions, either periodically or event-controlled.
  • DE3431076 discloses an arrangement for simulating a process control having multiple inputs for measurement parameters.
  • the measurement parameters are simulated either by modified sensors, for example, a capacitive level sensor, on the Meßrohrschaft a metal sleeve is pushed far different to simulate a level change, or by a sensor simulator module, which supplies the various inputs for the measurement parameters.
  • a sensor simulator module which supplies the various inputs for the measurement parameters.
  • it is checked whether the process control correctly detects and complains of deviations from nominal conditions and activates actuators in order to adapt the simulated actual values to the nominal values. This is done in the described arrangement by an operator who has to readjust the simulated actual values by hand.
  • this system allows testing the logical structure of a process control, this approach does not seem appropriate for dynamic operations.
  • the functionality of a real process installation can not be checked especially in safety and time critical with this arrangement.
  • EP0433995 discloses a device apparatus for checking a
  • the apparatus includes a test transducer which is remote from the instrument connected to the signal output line of the instrument to transmit test signals via the signal output line to a test signal receiver in the vicinity of the instrument under test, the test signal receiver is also connected to the signal output line.
  • the test signal receiver controls a sensor simulator which is connected to a sensor signal input of an instrument to be tested and simulates sensor signals in response to the test signals and outputs to the sensor signal input.
  • the resulting output signal which should be the correct response to the simulated sensor signal if the instrument functions correctly, is output via the signal output. output of the instrument and fed to the usual receiver in the field instrument system.
  • the receiver may be a display device, a data recorder or a controller.
  • an output of the receiver may be fed to a controller that controls the test buzzer.
  • the device thus makes it possible to check the intended function of a field instrument system, for example a fill level monitoring system, without actually having to vary the fill level.
  • the device described certainly has its authorization, but is highly inflexible, since the installation effort to set up a sensor simulation is relatively large.
  • the object is achieved by the sensor simulator according to independent claim 1.
  • the invention discloses a sensor simulator for testing the behavior of a process plant as a function of the signals of a sensor whose signals are simulated by the sensor simulator, wherein the process plant has at least one measuring path with a sensor interface for connecting the sensor to which the sensor simulator can be connected , in which
  • the simulator has a measuring section interface, which can be connected to the sensor interface of the measuring section, and outputs signals to the measuring section and / or receives signals from the measuring section; and a control circuit for simulating signals which form the output signal at the measurement interface, the signals comprising time profiles of measurement signals.
  • the sensor interface of the measuring section can be, for example, the interface of a bus coupler, the sensor signal on a data bus, for example, a fieldbus such as Foundation Fieldbus, Profibus o.a. transmits, or an interface of a transducer which converts the sensor signal and then outputs a measured value in a suitable format, for example 4 .. 20 mA, or as a field bus signal with one of the aforementioned bus protocols.
  • the transmitter can also have a control output in order to output actuating signals as a function of the determined measured value in addition to or instead of the measured value output.
  • the temporal courses of the measuring signals can, for example, in a program calculated or read from a data memory of the simulator.
  • the simulator comprises different test routines with different time courses, wherein the test routines are selectable by an operator or can be executed sequentially.
  • the sensor simulator may have a second signal output, communicates via the simulation signals just issued in parallel to a control unit, which also detects the reaction of the checked process plant or the tested test section on the simulated sensor signal.
  • the communication of the simulation signals can be done either by parallel transmission of the actual simulation signals, or by transmission of indices and start signals, by which the respective current time courses and their start time are identified.
  • the transmission can be done wirelessly, for example, by infrared, wireless, GSM, ZigBee, Bluetooth, UMTS, WLan or wired or with a light guide.
  • the sensor simulator comprises a synchronized clock, by which the start of the individual time courses can be precisely defined and identified. In this case, a parallel transmission of the timing signals is not required. The functioning of the process plant can then be checked later by comparing the time course of signals on the measuring path and possibly present control signals from other components of the system with the simulated sensor signals at the time in question.
  • the sensor simulator comprises a control output for controlling or starting at least one dependent slave simulator, which can be connected for example at a measuring point in the vicinity of the sensor simulator, which in this case referred to as master simulator can be.
  • the communication between the master simulator and the at least one slave simulator can be wireless, such as infrared, wireless, GSM, ZigBee, Bluetooth, or wired or with a light guide.
  • the sensor simulator comprises a signal input, via which, for example, a response signal of the process plant or a component of the process plant, such as a controller can be returned.
  • a response signal of the process plant or a component of the process plant, such as a controller can be returned.
  • the time profile of the simulated signal can be varied.
  • the advantage of the simulator according to the invention is that can be intervened decentralized in a process plant with a simulation to monitor the response of the process plant to critical temporal developments of the measured data. For example, this may be overheating or overacidification of a reactor that is too fast Emptying a tank, or affect a too rapid pressure drop in a process in which the respective absolute values of the sensor signals are not necessarily problematic, but based on the rate of change of the signals a critical situation may emerge.
  • the use of the simulator according to the invention is preferably carried out in the review of plants or plant parts.
  • the sensor simulator may also include a signal input, which receives a signal from a suitable point of the measuring section, for example, 4 20 mA signal of a transmitter, a HART signal a Profibus signal or a Foundation Fieldbus signal to the accuracy of To check the signals communicated to the measuring path, or to correlate these signals with the signals generated by the sensor simulator.
  • a signal input which receives a signal from a suitable point of the measuring section, for example, 4 20 mA signal of a transmitter, a HART signal a Profibus signal or a Foundation Fieldbus signal to the accuracy of To check the signals communicated to the measuring path, or to correlate these signals with the signals generated by the sensor simulator.
  • the simulated signals can represent not only measured values but also calibration data, for example, to verify the correct conversion by a converter, and on the other hand they can take state data, such as the failure of a component of the sensor. In this case, check whether the converter communicates the correct error message, if this is intended.
  • the measuring section is designed for a sensor with a memory module, so the simulator can trigger various read and write routines to check the communication between the test section and the memory module.
  • This relates in particular to measuring sections which have a converter to which the sensor or the sensor module is connected as intended
  • the interface may on the one hand comprise a galvanically isolated interface, in particular an inductive interface for the transmission of energy to the sensor and for data exchange between sensor and converter.
  • the data exchange from the converter to the sensor or to the simulator takes place, for example, by transformer-side modulation of the energy signal and the data transmission from the sensor to the converter is effected by load modulation of the energy signal on the sensor side or sensor simulator.
  • the sensor simulator according to the invention is integrated in a sensor, wherein the control circuit triggers either at periodic intervals, or event-controlled, a test routine by simulation of sensor states.
  • 1 shows a simulated measured value profile for a pH sensor, as well as the response of a two-point controller with an associated alarm output.
  • the diagram in FIG. 1 shows in its upper part a simulated pH Value curve, which is coupled into a process plant via the sensor interface of a measuring section.
  • the response signal of a two-point controller in the process plant is recorded in the test of the process equipment and is shown in the lower part of the diagram, the two-position controller has an associated alarm output, the signals are also shown.
  • the two-position controller has an upper threshold and a lower threshold as a switching point, the switching takes place when crossing the thresholds in the extreme direction. In other words, the two-position controller switches when the upper threshold or undershooting of the lower threshold is exceeded.
  • the controller has an alarm output, which is activated when an upper alarm limit and falling below a lower alarm limit.
  • the alarm output is activated if the measured value is still in a noncritical state, but if its value changes too quickly over time.

Abstract

Simulateur de capteur destiné à tester le comportement d'une installation de traitement en fonction des signaux d'un capteur dont les signaux sont simulés par le simulateur de capteur. L'installation de traitement possède au moins une section de mesure pourvue d'une interface de capteur pour la connexion du capteur auquel le simulateur de capteur peut être connecté. Le simulateur possède une interface de section de mesure qui peut être connectée à l'interface de capteur de la section de mesure, et envoie des signaux à la section de mesure et / ou reçoit des signaux de la section de mesure, et un circuit de commande pour la simulation de signaux qui forment le signal de sortie de l'interface de section de mesure, les signaux comportant des tracés temporels de signaux de mesure.
EP06777766A 2005-08-31 2006-07-13 Simulateur de capteur Withdrawn EP1920302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005041427A DE102005041427A1 (de) 2005-08-31 2005-08-31 Sensorsimulator
PCT/EP2006/064218 WO2007025797A1 (fr) 2005-08-31 2006-07-13 Simulateur de capteur

Publications (1)

Publication Number Publication Date
EP1920302A1 true EP1920302A1 (fr) 2008-05-14

Family

ID=37027673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06777766A Withdrawn EP1920302A1 (fr) 2005-08-31 2006-07-13 Simulateur de capteur

Country Status (4)

Country Link
US (1) US20090216511A1 (fr)
EP (1) EP1920302A1 (fr)
DE (1) DE102005041427A1 (fr)
WO (1) WO2007025797A1 (fr)

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FR2904450B1 (fr) * 2006-07-31 2008-09-26 Airbus France Sas Systeme de simulation de capteur.
DE102008050612A1 (de) * 2008-10-09 2010-04-15 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Verfahren zum Testen des Verhaltens einer Prozessanlage
EP2662737A1 (fr) * 2012-05-08 2013-11-13 Prognost Systems GmbH Installation de simulation, procédé de fonctionnement d'une installation de simulation ainsi qu'utilisation d'une installation de simulation et d'un procédé de fonctionnement d'une installation de simulation
DE102013113368A1 (de) * 2013-12-03 2015-06-03 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Verfahren und Testanordnung zum Testen eines Betriebszustandes einer Prozessanlage
JP2015139576A (ja) * 2014-01-29 2015-08-03 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 超音波診断装置及びプログラム
US9618933B2 (en) 2014-02-10 2017-04-11 General Electric Company System and method for verifying the configuration and installation of a monitoring and protection system
DE102015111594A1 (de) * 2015-07-16 2017-01-19 Endress+Hauser Conducta Gmbh+Co. Kg Verfahren zur Kommunikation zwischen einem Sensor und einem mit dem Sensor verbindbaren Anschlusselement
DE102015120072A1 (de) * 2015-11-19 2017-05-24 Endress + Hauser Wetzer Gmbh + Co. Kg Verfahren zur in-situ Kalibrierung einer analogen Messübertragungsstrecke und entsprechende Vorrichtung
CN114355788B (zh) * 2021-11-30 2023-10-03 湖北三江航天红林探控有限公司 一种用于机电引信的自动化半实物仿真系统
CN113928595B (zh) * 2021-12-17 2022-03-08 中国飞机强度研究所 一种实验室内飞机整机低温试验条件剪裁方法

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Also Published As

Publication number Publication date
DE102005041427A1 (de) 2007-03-01
US20090216511A1 (en) 2009-08-27
WO2007025797A1 (fr) 2007-03-08

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