62 results about "Signal Sensitivity" patented technology

A signal adaptive filtering technique for recognizing touch and release events as indicated from a measured capacitance signal received from a capacitive touch sensor device in order to improve electromagnetic noise immunity, event detection responses, adaptability to dynamically changing environments, and adaptability to signal sensitivity changes and signal offset over an extended period of time. A capacitive touch sensor system may include one or more capacitive touch sensor devices, each sending a measured capacitance signal that outputs a baseline capacitance signal during a release event, and outputs an increased capacitance signal during a touch event. The system updates the baseline capacitance signal with a filter, wherein a transfer function of the filter varies as a function of a current state of the capacitive touch sensor device, determines a range of capacitance values calculated from the baseline capacitance signal in which a recognition of the touch event will not be performed, creates a predicted signal from a filtered version of the measured capacitance signal, and recognizes a touch or release event from a comparison of the measured capacitance signal to the predicted signal.

The invention relates to a method for installing an optical fiber safety prewarning sensor which is used for protecting and prewarning the safety of buried structure or ground structure and facilities. The method comprises that a sensing optical cable (2) is arranged around the buried structure or the ground structure and the facilities (3) by underground laying, and is characterized in that one or a plurality of loops of sensing optical cable(s) (2) is / are buried underground around the protected structures and the facilities (3) in a shape similar to plane projection of the protected structures and the facilities (3); furthermore, the loop spacing is less than or equal to two times of monitoring sensitivity radius of the sensing optical cable (2), and the burying depth of the sensing optical cable (2) is less than the monitoring sensitivity radius of the sensing optical cable (2). The optical fiber sensor installed by the method has high, effective and reliable signal sensitivity.

An antenna device according to an embodiment of the present invention includes a dielectric layer, and an antenna pattern disposed on the dielectric layer. The antenna pattern includes a mesh structure in which unit cells defined by a plurality of electrode lines are assembled. A minimum distance between opposite sides facing each other in the unit cell is from 20 μm to 225 μm, and a line width of the electrode line is from 0.5 μm to 5 μm. A visual recognition of electrodes may be suppressed and a signal sensitivity may be enhanced by using the unit cell structure.

The invention discloses an independent sideband modulation signal demodulation method based on an FPGA, and the method comprises the steps: building a mathematical expression formula of an independentsideband modulation signal s(t); carrying out the Hilbert transformation of the signal s(t), and obtaining a signal s(t)<^>; inputting the signals s(t) and s(t)<^> into a first channel, and carryingout the down-conversion operation; enabling the signals to pass through a group of extraction filters, and obtaining a signal m1(t); inputting the signals s(t)<^> and s(t) into a second channel, carrying out the down-conversion calculation, enabling the signals to pass through a group of extraction filters, and obtaining a signal m2(t); carrying out the Hilbert transformation of the signal m2(t),and obtaining a signal m2(t)<^>; carrying out the Hilbert transformation of the signal m2(t)<^> again, and obtaining a signal -m2(t); carrying out the algorithm calculation of the obtained signals m1(t) and m2(t)<^>, and respectively solving upper and lower sideband signals. Based on the software radio core thought, the method employs the basic idea of the digital quadrature demodulation, combinesthe Hilbert transformation, designs two paths, achieves the algorithm calculation of the obtained signals, obtains the upper and lower sideband signals, is high in sensitivity of a demodulated signal, and is suitable for the demodulation application of LSB / USB / SSB signals.

The invention provides a CIS gene chip and a manufacturing method thereof. The method includes: providing a CIS chip, the CIS chip includes a pixel photosensitive area, thinning a dielectric layer in the pixel photosensitive area of ​​the CIS chip; forming an amination The aminated substance covers the thinned area of ​​the dielectric layer, and the CIS gene chip formed thereby can shorten the distance between the signal source and the signal collection area, improve the signal sensitivity, and improve the accuracy of the test results. At the same time, its analysis equipment can be miniaturized, and it can break the site limitation of gene analysis and reduce the cost, and can improve the mass production of CIS gene chips.

The invention discloses a bifunctional MoS 2 / ZnO composites in the application of bisphenol A trace detection, the MoS 2 / ZnO composites prepared by ①MoS 2 Preparation, ②MoS 2 / ZnO is prepared in two process steps. The method of the invention has simple operation process, low cost and good reproducibility, and the obtained Raman enhanced signal has high sensitivity and good stability, and has important research value and good application in the field of preparing composite materials. Application prospects, and the MoS prepared by this method 2 The / ZnO composite material has a very good photocatalytic effect on MB and can also realize the trace detection of BPA.