DE102013007239A1 - System and method for assigning and registering sensors in a bus system - Google Patents

Abstract

The invention relates to a system and method for assigning and registering sensors in a bus system, with several sensors being connected to a port of a detection unit. A marker is positioned near each sensor, which automatically and logically assigns the sensor to the system.

Description

The invention relates to a system and method for the assignment and registration of sensors in a bus system, which is used for example in gas-insulated switchgear.

State of the art:

In monitoring systems of gas-insulated switchgear (GIS), data on the condition of the system are recorded, processed and visualized. These data are collected by means of sensors mounted on the system and transmitted to a central recording unit. This is for example in the WO2010078889 described.

For acquiring the process data of the sensors, there are analogue and digital transmission modes. An example of an interface for an analog transmission type is a 4..20 mA interface. In digital transmission mode, the system to which several sensors are connected, be constructed as a bus system, which in the 1 and 2 is shown.

Basically, all sensors are functionally equivalent.

To assign the sensors to a specific data point, all sensors must be assigned to a specific port in order to display the data accordingly in the visualization. For example, an assignment of sensors to gas space designations from the switchgear technology of a gas-insulated switchgear. In general, however, this situation applies to any system in which sensors are used and data from the component connected to the sensor is to be displayed.

• Bei (a) werden die Sensoren einem bestimmten Port zugewiesen, z. B. Sensor A an Port 1. Somit können bei der Datenverarbeitung und Visualisierung die Daten des Sensors A entsprechend dem Datenpunkt zugeordnet werden, der dem Port 1 entspricht.
• Bei (b) sind mehrere Sensoren an einer Schnittstelle der zentralen Datenerfassungseinheit angeschlossen. Somit kann eine Zuordnung wie in (a) nicht angewendet werden. Eine Zuordnung findet deshalb über eine eindeutige ID (Ident Nummer) o. ä. statt, die in jedem Sensor verankert ist. Statt an verschiedene Ports der zentralen Datenerfassungseinheit kann die Zuordnung dann mittels dieser ID des Sensors zugeordnet werden. Statt einer ID können auch andere Parameter verwendet werden, wie z. B. eine Adresse.

State of the art is an assignment of the sensors to the corresponding data points before or during commissioning. Here, a (a) star-shaped system (see 1 ) and (b) a bus-shaped system (see 2 ):

• In (a), the sensors are assigned to a particular port, e.g. B. Sensor A to port 1. Thus, in the data processing and visualization, the data of the sensor A can be assigned according to the data point corresponding to the port 1.
• In (b) several sensors are connected to an interface of the central data acquisition unit. Thus, an assignment as in (a) can not be applied. An assignment therefore takes place via a unique ID (ident number) or the like, which is anchored in each sensor. Instead of different ports of the central data acquisition unit, the assignment can then be assigned by means of this ID of the sensor. Instead of an ID, other parameters can be used, such. B. an address.

• – Risiko einer falschen Zuordnung (d. h. Sensor wird an die falsche Komponente montiert),
• – Risiko einer doppelten Adressierung, erhöhter Aufwand zur Adressierung, Aufwand bei Austausch eines Sensors.

This results in the following disadvantages:

• - Risk of incorrect assignment (ie sensor is mounted on the wrong component),
• - Risk of duplicate addressing, increased effort for addressing, expense when replacing a sensor.

Description of the invention:

The object of the invention is to eliminate the above-mentioned disadvantages in the construction of a bus system, when a plurality of sensors are connected to a port of the detection unit.

The object is solved by the features of independent claim 1.

To install the system, all sensors are connected to the bus system. Provided all sensors are the same, it does not matter which sensor is installed on which component (to be read by the sensor). In the underlying invention, a marker o. Ä. Is positioned near each sensor, which automatically assigns the sensor according to the system automatically logically.

The marker must first be assigned according to the addressing. The necessary assignment / addressing is stored in the marker. During commissioning (ie as soon as the system is supplied with power), the sensor can read out the marker automatically via an interface and thus knows its logical assignment in the system. This interface can be realized via a special connector on the sensor or contactless. In the contactless variant of the marker, which in the vicinity of the sensor z. B. glued or screwed, be equipped with a transponder, which can be read by the sensor and thus ensures the assignment. The marker / transponder could already be integrated directly on or in the component to which the sensor is mounted. Technologically, the marker may be a technology such as RFID or the like.

In summary, the invention is such that the information for the assignment of the sensor is not anchored in the sensor itself, but the sensor reads the information from the marker, which is attached to the component to be assigned reads.

This system design and method allows sensors without preconfiguration easy to be replaced, even later (eg in case of a defect). Furthermore, there is a very large time savings during commissioning.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2010078889 [0002]

Claims (5)

System for the assignment and registration of sensors in a bus system, wherein a plurality of sensors are connected to a port of a detection unit, characterized in that in the vicinity of each sensor, a marker is positioned, which automatically assigns the sensor to the system logically. System according to claim 1, characterized in that the marker is associated with a corresponding addressing and the assignment / addressing is stored in the marker. System according to claim 2, characterized in that an interface is provided, via which the sensor automatically reads the marker during startup and thus recognizes its logical assignment in the system. System according to one of the preceding claims, characterized in that the marker is glued or screwed in the vicinity of the sensor and is equipped with a transponder, which is readable by the sensor. System according to claim 1 to 3, characterized in that the marker is integrated directly on or in the component to which the sensor is mounted.

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