Abstract:
An array of coupled resonators including: an input unit that supplies an input electrical signal; an electrical excitation unit that electrically excites N coupled resonators of the array using the input electrical signal, wherein the electrical excitation unit includes, for each of the N coupled resonators, an actuator, connected to the input unit, that actuates a respective one of the N coupled resonators according to the input electrical signal, and a variable gain input amplifier that amplifies actuation of a respective one of the N coupled resonators; and a controller that controls a specific setting of a variable gain of each of the variable gain input amplifier.
Abstract:
The oscillator comprises at least a first series of a multiple of four sub-assemblies each of which comprises an excitation terminal and an output terminal. The sub-assemblies are arranged in series in a closed loop. The output terminal of each sub-assembly is connected to the excitation terminal of the following sub-assembly. The output terminal of one of the sub-assemblies constitutes the output terminal of the oscillator. Each sub-assembly comprises excitation means and a nanowire which constitutes the electromechanical resonator and the piezoresistive detection means of movement of the resonator. A first terminal of the nanowire is connected to a first supply voltage. The second terminal of the nanowire constitutes the output terminal of the sub-assembly which is grounded via a corresponding resistive circuit. An input terminal of the excitation means constitutes the excitation terminal of the sub-assembly.
Abstract:
This array (10) of coupled resonators (16i) comprises means (12) for supplying an input electrical signal (Ve) and means (14) for electrically exciting N coupled resonators (16i) of the array using this input electrical signal.The electrical excitation means (14) comprise, for each of these N coupled resonators (16i), actuation means (18,) connected to the means (12) for supplying the input electrical signal for an actuation of this coupled resonator according to the input electrical signal, and variable gain input amplification means (20i) for the actuation of this coupled resonator specific to this coupled resonator (16i). Furthermore, they comprise means (22) for controlling a specific setting of the variable gain of each of the input amplification means (20i).
Abstract:
A measuring system including: at least two electromechanical resonators each having a resonant frequency varying around an offload resonant frequency according to a physical quantity to be measured; at least one reading device connected to inputs of the resonators and configured to supply an excitation signal on the inputs; and a memory in which is recorded, for each resonator, offload resonance information relating to the offload resonant frequency of the resonator. Each reading device is configured to determine the resonant frequency of one or more resonators selected for reading by configuring at least one element of the reading device using the offload resonance information stored for each selected resonator.
Abstract:
A device with a suspended beam and piezoresistive means of detecting displacement of the beam and a method of manufacturing the device are disclosed. The device comprises a support, a suspended beam, moving parallel to the plane of the support, and means of detecting displacement, comprising at least two piezoresistive strain gauges that are not in line with each other. The beam is suspended through detection means. The two gauges are located on two opposite lateral faces of the beam respectively.
Abstract:
A device for analyzing a fluid, including a layer including a plurality of sensors of MEMS and/or NEMS type, a layer including a mechanism controlling the sensor and for processing information transmitted by the sensors, the control and processing mechanism being electrically connected to the detectors, and a layer positioned on the layer including the sensors on a side of a face including the sensors including a mechanism spatially and temporally distributing the fluid on the sensors.
Abstract:
A resonant filter including a matrix of n×m resonators of N/MEMS type, each resonator including an actuating mechanism and a detection mechanism. An input of the filter, configured to receive an electrical input signal, is electrically connected to the resonator actuating mechanism. The outputs of the resonator detecting mechanism are electrically connected together and to an output of the filter, such that the signal to be obtained as an output of the filter is an image of the sum of the mechanical responses of the resonators. The resonators are not mechanically coupled together.
Abstract translation:一种谐振滤波器,包括N / m m型谐振器的矩阵,每个谐振器包括致动机构和检测机构。 被配置为接收电输入信号的滤波器的输入电连接到谐振器致动机构。 谐振器检测机构的输出电连接到滤波器的输出端,使得作为滤波器的输出获得的信号是谐振器的机械响应之和的图像。 谐振器不是机械耦合在一起的。