Abstract:
Disclosed is a polymeric electret film as well as the method of manufacturing the same. The polymeric electret film comprises a polytetrafluoroethylene film and an electrode layer. The polytetrafluoroethylene film includes a porous layer, which has a porous structure. The porous structure has a pore diameter ranging between 0.01 μm and 5.0 μm and has a porosity ranging between 20% and 95%. The polytetrafluoroethylene film has a thickness ranging between 1 μm and 50 μm, and is preferably made of expanded porous polytetrafluoroethylene. The polymeric electret film has a surface potential ranging between 0.1 V and 1000 V.
Abstract:
The present invention provides an asymmetric porous PTFE membrane for a filter having little change over time and conventionally known properties of a porous PTFE molded article such as water permeability resistance, air permeability, sealing properties and electric properties, in which collection efficiency, air permeability and pressure loss are improved. Specifically, the present invention relates to an asymmetric porous PTFE membrane for a filter comprising a dense skin layer and a continuously foamed porous layer, wherein (1) the contact angle of water to the surface of the skin layer is 120 to 140°; and (2) the diffuse reflectance of light is 91 to 94%.
Abstract:
An ear thermometer having the RFID reading function comprises an ear thermometer body, a display unit, an RFID reading key and a temperature detection unit. The ear thermometer can read an RFID tag of a subject and detect his ear temperature. The RFID tag and the measured ear temperature of the subject can be simultaneously displayed on the display unit of the ear thermometer. Moreover, the ear thermometer can store and call out several groups of RFID tags and temperature measurement results of different subjects.
Abstract:
The present invention discloses an ear thermometer with a simple-structure and easy-operation probe-cover detaching mechanism, which comprises a body having a probe and a detaching element installed to the bottom of the probe. The detaching element can be directly operated by a finger. After measurement, the user can use the detaching element to exert an outward force on a probe cover sleeving the probe and reject the probe cover from the probe. Further, the detaching element may be made of a metallic material, and magnetic elements are arranged at the corresponding positions of the probe bottom; thereby, the detaching element can be automatically restored to its original position by the attractive force of the magnetic elements. Therefore, the present invention provides an ear thermometer, which can easily reject a probe cover from the probe and has the advantages of simple structure and easy operation.
Abstract:
A terminal adapter for ISDN services is implemented using a digital signal processor rather that a general purpose microprocessor, and provides normal terminal adapter functionally while at the same time substantially reducing part count and increasing flexibility and reliability. The terminal adapter uses a pipelined operating system involving a series of hierarchical menus of subtasks to perform the various functions required for ISDN operability.
Abstract:
A waveguide for tympanic thermometer formed by an elongate hollow member having substantially ellipsoidal shape truncated at both ends along its major axis direction. The waveguide is interposed between a tympanic membrane of which the temperature is to be measured and an infrared radiation sensor so as to guide the infrared radiation from the tympanic membrane to the sensor. Alternatively, the waveguide may also be a hollow member including an end portion having a gradually reduced inner diameter toward the side of sensor. The gradually reduced end portion is preferably of a truncated half ellipsoidal shape having a length between about 1/10 to about 1/3 of the distance from the sensor to the distal end of the waveguide.
Abstract:
A computing device may be joined to a cluster by discovering the device, determining whether the device is eligible to join the cluster, configuring the device, and assigning the device a cluster role. A device may be assigned to act as a cluster master, backup master, active device, standby device, or another role. The cluster master may be configured to assign tasks, such as network flow processing to the cluster devices. The cluster master and backup master may maintain global, run-time synchronization data pertaining to each of the network flows, shared resources, cluster configuration, and the like. The devices within the cluster may monitor one another. Monitoring may include transmitting status messages comprising indicators of device health to the other devices in the cluster. In the event a device satisfies failover conditions, a failover operation to replace the device with another standby device, may be performed.
Abstract:
A computing device may be joined to a cluster by discovering the device, determining whether the device is eligible to join the cluster, configuring the device, and assigning the device a cluster role. A device may be assigned to act as a cluster master, backup master, active device, standby device, or another role. The cluster master may be configured to assign tasks, such as network flow processing to the cluster devices. The cluster master and backup master may maintain global, run-time synchronization data pertaining to each of the network flows, shared resources, cluster configuration, and the like. The devices within the cluster may monitor one another. Monitoring may include transmitting status messages comprising indicators of device health to the other devices in the cluster. In the event a device satisfies failover conditions, a failover operation to replace the device with another standby device, may be performed.
Abstract:
A differential pressure sensor method and system includes a number of elastomer plates, which can be placed with certain distance and sealed in a small tube, wherein the tube can be connected to a number of detection areas. The surface of the elastomers can be covered with a thin film of conductive elastomer as a compliant electrode. The resistance of the compliant electrodes varies with deformation of the elastomer plates and the resistance change can be measured through circuits. A variable capacitor also exists between the elastomer plates due to a sealed space and the compliant electrodes. The elastomer plates deform accordingly when the pressure varies in the detection areas and the variation of the capacitance can be detected through circuits. The pressure difference between the detection areas can then be detected utilizing the variation in resistance and capacitance.
Abstract:
The present invention discloses a method for calibrating an infrared thermometer, which can obtain a sensitivity of a radiation sensor of an infrared thermometer and a reference resistance of an ambient-temperature sensor of the infrared thermometer. The method of the present invention uses an infrared thermometer to detect two test objects respectively placed in two environments having different ambient temperatures to obtain output signals of the radiation sensor and resistances of the ambient-temperature sensor from the two test objects. Then, the method of the present invention uses the output signals of the radiation sensor and the resistances of the ambient-temperature sensor to work out the sensitivity of the radiation sensor and the reference resistance of the ambient-temperature sensor.