摘要:
A multi-axis accelerometer is consisted of a substrate with sensing electrodes and a structure layer. The structure layer includes anchor bases fixed on the substrate. A first proof mass is disposed over the substrate and has a first opening and a second opening symmetric to each other. The first proof mass is suspended to the anchor bases. Fixed sensing blocks are disposed on the substrate, and capacitors are formed between each fixed sensing block and the first proof mass for sensing acceleration along two in-plane directions. A second proof mass and a third proof mass are disposed in the first opening and the second opening and are asymmetrically suspended. Separate electrodes are disposed on the substrate and form two differential capacitors with the second proof mass and the third proof mass for sensing the out-of-plane acceleration.
摘要:
A device for applying coolant/lubricant to the surface of the rolls of the rolling mill and/or the workpiece being rolled. The device comprises a housing having a plurality of nozzles associated therewith, a rotating inner manifold having a plurality of apertures therein in a particular array for directing liquid to the nozzles and sealing means between the manifold and housing which provides a leak-free passageway for the liquid. The manifold is rotated to align the apertures therein with the leak-free passageway to supply liquid to the desired nozzles.
摘要:
This invention provides a signal processing method of multiple micro-electro-mechanical system devices. The signal processing method includes: providing at least two MEMS devices; applying driving or modulating signals of different frequencies to the MEMS devices such that the MEMS devices generate respective MEMS signals with respective frequencies; and combining the MEMS signals with respective frequencies into one or more multi-frequency signals and outputting the multi-frequency signals, wherein a number of the multi-frequency signals is less than a number of the MEMS signals with respective frequencies. This invention also provides a combo MEMS device integrating two or more MEMS devices and two or more vibration sources.
摘要:
A microelectromechanical system device including anchors and mass is provided. Electrical interconnections are formed on the mass by using a insulation layer of mass, an electrical insulation trench and conductive through hole. The electrical interconnections replace the cross-line structure without adding additional processing steps, thereby reducing the use of the conductive layer and the electrical insulation layer. A method for fabricating the microelectromechanical system device is also provided.
摘要:
A laptop computer includes a housing comprising a top keyboard and a manually operated switch having a first position for showing a predetermined operating mode, and a second position for showing a Bluetooth operating mode; a display hingedly connected to a rear edge of the housing; a CPU in the housing; and a Bluetooth adaptor in the housing and comprising a switch circuit, a MCU, a translator, and a Bluetooth device communication module. In the predetermined operating mode key codes are sent to the CPU via the switch circuit. In the Bluetooth operating mode the key codes are sent to the translator via the switch circuit and the MCU, the translator translates the key codes to Bluetooth key codes and sends same to the Bluetooth device communication module, and the Bluetooth device communication module transmits the Bluetooth key codes to a handheld telecommunications device as commanded by the MCU.
摘要:
A calibration apparatus and method for a capacitive sensing device, in which a calibration capacitor device connects to the capacitive sensing device which is connected to an integration circuit that generates a voltage output and a latch output, a transforming circuit transforms a sensitivity calibration parameter into a pair of corresponding analog signal outputs, and an offset calibration parameter into a corresponding analog signal output, at least two first switches between the pair of corresponding analog signal outputs and a fixed potential according to system clock's levels, and at least a third switch switches between the corresponding analog signal output and another fixed potential according to the system clock's levels. The apparatus determines the switch between the pair of signal outputs according to the latch output.
摘要:
A process and apparatus for on-line measurement of unflatness of hot or cold rolled strip products, wherein the longitudinal bending of a shape roll over which the strip passes provides a measure of the unflatness of the strip. Actual values of force, displacement or bending moment near the ends of the shape roll may be compared to theoretically predicted values for a flat product and for product having various out-of-flatness conditions. Preferably, the shape roll is supported at its ends by two pairs of supports, and the measurements at the supports are used in determining roll bending and then strip unflatness. Other conditions such as off-center strip and asymmetric operation of the rolling mill may also be determined from the measurement.
摘要:
A microelectromechanical system device including anchors and mass is provided. Electrical interconnections are formed on the mass by using a insulation layer of mass, an electrical insulation trench and conductive through hole. The electrical interconnections replace the cross-line structure without adding additional processing steps, thereby reducing the use of the conductive layer and the electrical insulation layer. A method for fabricating the microelectromechanical system device is also provided.
摘要:
A multi-axis accelerometer is consisted of a substrate with sensing electrodes and a structure layer. The structure layer includes anchor bases fixed on the substrate. A first proof mass is disposed over the substrate and has a first opening and a second opening symmetric to each other. The first proof mass is suspended to the anchor bases. Fixed sensing blocks are disposed on the substrate, and capacitors are formed between each fixed sensing block and the first proof mass for sensing acceleration along two in-plane directions. A second proof mass and a third proof mass are disposed in the first opening and the second opening and are asymmetrically suspended. Separate electrodes are disposed on the substrate and form two differential capacitors with the second proof mass and the third proof mass for sensing the out-of-plane acceleration.