摘要:
Provided is a temperature derivation method for deriving an oil film temperature of a lubricant in a device, the temperature derivation method including a measurement step of measuring a dielectric constant of the lubricant by applying an alternating voltage while changing a frequency to an electric circuit configured by the device, a derivation step of applying the dielectric constant measured in the measurement step to a theoretical formula to derive a relaxation time of the lubricant, and a calculation step of calculating the oil film temperature by using the relaxation time.
摘要:
Described is a method and a sensor arrangement for determining a physical quantity. The described method comprises stimulating a capacitor device (200a-d) being formed within a native component carrier (210); measuring a capacitance value of the capacitor device (200a-d); and determining the physical quantity based on the measured capacitance value. Further described is a method for using a native component carrier (210) as a transducer for detecting the value of a physical quantity.
摘要:
A temperature-sensing apparatus for sensing the temperature of an electrical conductor (31), comprising a sensor frame (210) including a frame body (2101) and a channel (2102) adapted to accommodate the electrical conductor (31). At least a portion of a temperature sensor is received in a chamber (2103) of the sensor frame (210). At least a portion of a thermal contact member is disposed between the electrical conductor (31) and the temperature sensor and configured to enhance thermal-contact therebetween. At least a portion of the thermal contact member is radially pressable against the electrical conductor (31).
摘要:
The invention relates to an integrated temperature sensor (1) comprising: means (2000) for generating a pulse train (DATA_IN) at an oscillation frequency, means (3000) for counting the number of pulses during a fixed period of time independent of a temperature to be measured (T) and for generating a plurality of bits (b 11 , b 10 ,..., b 0 ) indicating the number of pulses in the pulse train (DATA_IN), and means (4000) for generating a serial digital signal (DATA_OUT) from said bits (b 11 , b 10 ,..., b 0 ), in which the means (2000) for generating a pulse train (DATA_IN) include a plurality of logic gates (2410, 2420, 2430, 2440, 2450) which can introduce a delay dependent on the temperature to be measured (T), said means (2000) generating a pulse train (DATA_IN) the oscillation frequency of which is dependent on said temperature to be measured (T). The invention also relates to a temperature measurement method and to a transponder for a wireless system.
摘要:
An electrical temperature sensor 10 comprises a liquid crystalline material 12. First and second electrically conductive contacts 14, 16, having a spaced relationship therebetween, contact the liquid crystalline material 12. An electric property measuring device is electrically connected to the first and second contacts 14, 16 and is arranged to measure an electric property of the liquid crystalline material 12. The liquid crystalline material 12 has a transition temperature T at which it undergoes a phase change between polar and non-polar phases. The phase change between polar and non-polar phases causes a change in said electric property of the liquid crystalline material 12.
摘要:
Eine Heizeinrichtung weist einen flächigen Träger, mindestens einen Heizleiter, eine Messeinrichtung, eine Dielektrikumsschicht über bzw. auf dem Träger, zwei nebeneinander verlaufende Elektroden über bzw. auf der Dielektrikumsschicht und eine Basisisolationsschicht über den beiden Elektroden auf, wobei der mindestens eine Heizleiter über der Basisisolationsschicht aufgebracht ist. Die Dielektrikumsschicht weist temperaturabhängige Eigenschaften hinsichtlich ihrer kapazitiven Eigenschaften auf. Die Messeinrichtung ist mit den beiden Elektroden verbunden und dazu ausgebildet, eine temperaturabhängige Änderung einer Kapazität an den Elektroden zu erfassen und als Maß für eine Temperaturänderung an der Heizeinrichtung auszuwerten.
摘要:
Methods for assessing a temperature in an opening in a subsurface formation are described herein. A method may include assessing one or more dielectric properties along a length of an insulated conductor located in the opening and assessing one or more temperatures along the length of the insulated conductor based on the one or more assessed dielectric properties.