Method for manufacturing measuring transducers
First Claim
1. A method for manufacturing measuring transducers, especially pressure or pressure difference measuring transducers, with:
- a memory readable and writable via an associated RFID interface, at least one sensor for registering a physical, measured variable and for transducing such into an electrical variable,which sensor is equipped with a sensor electronics, said sensor electronics serving to condition the electrical variable into an electrical measurement signal dependent on the measured variable, and which is equipped with an RFID transponder, for supplying the sensor with energy via said RFID transponder, and for reading out the measurement signals wirelessly via said RFID transponder, the method comprising the steps of;
subjecting the measuring transducers and/or their sensors to at least one calibration and/or test procedure;
exclusively supplying the sensors with energy via their RFID transponders;
reading out their measurement signals via their RFID transponders;
deriving transducer specific and/or sensor specific data based on the calibration and/or test procedures; and
storing said transducer specific and/or sensor specific data in the memory via the RFID interface.
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Accused Products
Abstract
A method for manufacturing measuring transducers, especially pressure or pressure difference measuring transducers, in which a high degree of quality, safety and accuracy of measurement is achievable with little logistical and manufacturing effort. The measuring transducer has a memory readable and writable via an associated RFID interface, and at least one sensor for registering a physical, measured variable and for transducing such into an electrical variable, wherein the sensor is equipped with sensor electronics, which serves to condition the electrical variable into an electrical measurement signal dependent on the measured variable, and which is equipped with an RFID transponder, via which the sensor is supplied with energy, and via which measurement signals can be read out wirelessly. The measuring transducers and/or their sensors are subjected to at least one calibration and/or test procedure, in which the sensors are exclusively supplied with energy via their RFID transponders, and their measurement signals are read out via their RFID transponders, and measuring transducer specific and/or sensor specific data derived during the calibration and/or test procedure are stored in the memory via the RFID interface.
16 Citations
13 Claims
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1. A method for manufacturing measuring transducers, especially pressure or pressure difference measuring transducers, with:
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a memory readable and writable via an associated RFID interface, at least one sensor for registering a physical, measured variable and for transducing such into an electrical variable, which sensor is equipped with a sensor electronics, said sensor electronics serving to condition the electrical variable into an electrical measurement signal dependent on the measured variable, and which is equipped with an RFID transponder, for supplying the sensor with energy via said RFID transponder, and for reading out the measurement signals wirelessly via said RFID transponder, the method comprising the steps of; subjecting the measuring transducers and/or their sensors to at least one calibration and/or test procedure; exclusively supplying the sensors with energy via their RFID transponders; reading out their measurement signals via their RFID transponders; deriving transducer specific and/or sensor specific data based on the calibration and/or test procedures; and storing said transducer specific and/or sensor specific data in the memory via the RFID interface. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A measuring transducer, especially a pressure or pressure difference transducer, comprising:
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at least one sensor for registering a physical, measured variable and for transducing such into an electrical variable, said at least one sensor being equipped with a sensor electronics, which serves to condition the electrical variable into an electrical measurement signal dependent on the measured variable, which sensor is equipped with a sensor electronics, said sensor electronics serving to condition the electrical variable into an electrical measurement signal dependent on the measured variable, and which is equipped with an RFID transponder, for supplying the sensor with energy via said RFID transponder, and for reading out the measurement signals wirelessly via said RFID transponder; and a memory readable and writable via the associated RFID interface, in which measuring transducer specific and/or sensor specific data derived from a calibration and/or test procedure are stored via the RFID interface;
whereinthe measuring transducer is a pressure or pressure difference transducer equipped with at least one pressure transfer means, and the sensors comprise at least one temperature sensor, which is arranged in the pressure transfer means, and measuring transducer specific data, which reflect a response of the pressure transfer means as a function of a pressure acting thereon and a temperature dependence of this response, derived during a calibration and/or test procedure are stored in the memory via the RFID interface. - View Dependent Claims (8, 9, 10)
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11. The measuring device comprising:
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a pressure measuring transducer, comprising; at least one sensor for registering a physical, measured variable and for transducing such into an electrical variable, said at least one sensor being equipped with a sensor electronics, which serves to condition the electrical variable into an electrical measurement signal dependent on the measured variable, and which is equipped with an RFID transponder, via which the sensor is supplied with energy, and via which measurement signals can be read out wirelessly; and a memory readable and writable via the associated RFID interface, in which measuring transducer specific and/or sensor specific data derived from a calibration and/or test procedure are stored via the RFID interface; wherein; the pressure difference transducer is equipped with at least one pressure transfer means, and the sensors comprise at least one temperature sensor, which is arranged in the pressure transfer means, and pressure difference transducer specific data, which reflect a response of the pressure transfer means as a function of a pressure acting thereon and a temperature dependence of this response derived during a calibration and/or test procedure are stored in the memory via the RFID interface; the measuring device further comprising; a measuring device electronics, which has an RFID interface via which the measuring device electronics supplies the sensors with energy, via which the measuring device electronics receives measurement signals of the sensors, and via which the measuring device electronics has access to data stored in the memory; and the measuring device electronics has a signal processor, which, based on a pressure difference measurement signal of the pressure difference sensor, measurement signals of the temperature sensors and data stored in the memory, produces a pressure difference measurement signal compensated relative to temperatures reigning in the pressure transfer means. - View Dependent Claims (12, 13)
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Specification