摘要:
A remote-access device typically used for tagging items, a reader device for the same, system and methods of such devices. The remote-access device has an advanced capability that the device is able to signal by an advanced capability code. The device or the system may carry advanced capability data that can be used to utilize or enhance the advanced capability. The advanced capability data may be stored at the remote-access device, at the reader or in the system at a computer. The results of the advanced functionality may be logged onto a database or they may be stored back to the remote-access device. The advanced capability code, data and results may be stored onto the remote-access device in protected form, and the access key may be derived from identification information on the remote-access device.
摘要:
A temperature measurement system capable of operating in harsh environments including a temperature sensor having an antenna, diode, and dielectric layer disposed on the object of interest is provided, wherein the antenna includes a buried portion that extends through and is electrically coupled to the object of interest, and an exposed portion disposed upon an outer surface of the dielectric layer and the diode is coupled between the object of interest and the exposed portion of the antenna. The antenna is configured to receive interrogating signals from transmitter, and to transmit response signals corresponding to the resonant frequency of the temperature sensor and its harmonics, which are indicative of the measured temperature of the object of interest. A receiver detects the response signals and correlates the frequency to a known temperature response of the dielectric material. Methods of making and using the temperature measurement system are also provided.
摘要:
Sensor package systems and methods are disclosed, which include a quartz sensor package encapsulated by an overmold material. A surface acoustic wave sensing element and one or more bonding pads can be integrated with the quartz sensor package. Additionally, one or more antennas can be respectively bonded to the quartz sensor package at the bonding pads, such that the antennas communicates electrically with the surface acoustic wave sensing element and permits wireless interrogation of the quartz sensor package including the surface acoustic wave sensing element from an external wireless source.
摘要:
The present invention discloses both methods and apparatus for carrying out proton magnetic resonance thermal analysis (PMRTA) measurements in which the non-equilibrium transient NMR response is measured with acceptable time resolution whilst the sample is subjected to a specified temperature regime. The technique is applicable to many materials including coal and polymers. The automation of a known manually operable limited temperature range NMR spectrometer to provide a PMRTA having a high temperature capability is disclosed. A probe (105) suitable for holding the sample and having an RF coil (109) and heater (107) is also disclosed.
摘要:
An inductive coupled temperature monitor (10) is taught that is capable of operating in or nearby conductive objects (12) that produce unwanted reflected impedance. The temperature monitor (10) can be used to telemeter temperature information from a closed soup can (12) or other container, during an industrial cooking process.
摘要:
Ein temperaturempfindlicher Schwingquarz 1 weist zwei zueinander parallele Oberflächen 2 von annähernd gleicher Größe auf, die mit einem durch je eine elektrische, mechanische Achse und optische Achse gebildeten x-y-z-Koordinatensystem des Quarz-Kristalls einen vorgegebenen Schnittwinkel bilden; der von einer der beiden Oberflächen 2 und der elektrischen (x-)Achse eingeschlossene Winkel0 liegt dabei innerhalb eines Toleranzbereiches von + 1 ° und -1 ° während der von einer der beiden Oberflächen 2 und der optischen (z-)Achse eingeschlossene Winkel 0 entweder im Bereich von 3 bis 6° oder im Bereich von 68 bis 72° liegt. Da im Bereich von ∼⃝ ≈ 4° und ∼⃝ ≈ 70° die Änderung des Temperaturkoeffizienten pro Änderung des Winkels ∼⃝ aufgrund der Maximum- bzw. Minimumcharakteristik nur verhältnismäßig gering ist, können in der Serienfertigung Schwingquarze innerhalb eines technisch gut zu handhabenden Toleranzbereiches mit praktisch konstantem Temperaturkoeffizienten hergestellt werden.
摘要:
Ein elektronisches Thermometer weist einen Oszillator auf, dessen frequenzbestimmendes Glied ein als Meßsonde ausgebildetes temperatursensitives piezoelektrisches Element ist, das in einem abgeschlossenen Gehäuse aus elektrisch isolierendem Material angeordnet ist; das piezoelektrische Element ist mit zwei Anschlußelektroden versehen, die über jeweils einen Kondensator mit der Oszillatorschaltung verbunden sind, wobei jeder der beiden Kondensatoren jeweils eine innerhalb und eine außerhalb des Gehäuses befindliche Elektrode aufweist.