14results about How to "Solve signal interference" patented technology

The present application relates to the technical field of engineering equipment, and specifically discloses a multi-channel weak signal acquisition system, which uses the ADS1299 chip to achieve high-precision signal acquisition, and reduces signal interference by designing hardware circuits and software algorithms. The hardware circuit uses ESD protection circuits and RC filter circuits for signal preprocessing to ensure the stability and anti-interference ability of the signal during transmission. The software part introduces deep learning technology to perform time-frequency analysis, feature filtering, and signal reconstruction on the human physiological signal data transmitted by the hardware circuit, thereby improving the signal quality. In this way, the signal interference problem in microfluidic chip detection can be effectively solved, and the detection accuracy and stability can be improved.

The application discloses a kind of optical fiber multi-parameter logging devices, it is related to marine engineering equipment technical field, cable winch, logging cable, guide wheel and logging unit for downhole optical scanning and parameter measurement;Cable winch is used to wind and release logging cable;One end of the logging cable is connected to the cable winch, and the other end is guided by the guide wheel and connected to the logging unit;The logging unit is provided with a gasbag one sealed on the outside of the borescope and a gasbag two for fixing the detection position, which can isolate drilling fluid by inflating to achieve accurate detection and fixation of the detection position and maintain pressure balance;It can realize the technical effects of improving the stability of fixation, improving environmental adaptability, reducing signal interference and flexibly maintaining the pressure balance in the well.

The utility model relates to the technical field of USB (Universal Serial Bus) interfaces, in particular to a side-mounted USB interface with a shielding function, which is used for being mounted and connected with a PCB (Printed Circuit Board) and comprises a side-vertical type female seat body and a shielding shell, the side-vertical type female seat body comprises a rubber core, a plurality of terminals embedded in the rubber core and a shell sleeved on the outer side of the rubber core, the two side edges of the shell extend downwards to form welding pins, the shielding shell comprises an upper shielding shell and a lower shielding shell, the shell is sleeved with the upper shielding shell, the lower shielding shell is buckled to the lower side of the upper shielding shell from bottom to top, and through buckling of the upper shielding shell and the lower shielding shell, full wrapping and external signal shielding of a product are achieved; and the problem of signal interference generated when the electronic product works is prevented.

The invention discloses an all-dielectric terahertz sensor based on an asymmetric eccentric circle structure, which comprises a quartz substrate layer, a plurality of unit cells arranged periodically are arranged on the quartz substrate layer, the structures of the plurality of unit cells are the same, each unit cell comprises a cylindrical silicon dielectric layer, and a through eccentric hole is vertically formed in the silicon dielectric layer. The invention further discloses application of the all-dielectric terahertz sensor based on the asymmetric eccentric circle structure. According to the invention, the problem of polarization interference in the prior art is solved, and accurate response of target polarization signals and non-target interference shielding are realized.

This utility model relates to the technical field of rotating machinery measuring devices, and particularly to an integrated rotating machinery measuring device, comprising a main housing, a mounting head, and a measuring mechanism. The mounting head is mounted on one side of the surface of the main housing, and the measuring mechanism is provided at one end of the main housing. In this integrated rotating machinery measuring device, after the device is powered on, an external power source provides power to the first circuit board and the transmitting coil. The transmitting coil, through the power supply, induces a voltage in the receiving coil, providing operating power to the two signal processing circuit boards (board 1 and board 2) on the second circuit board. The second signal processing circuit board is connected to a rotating component signal acquisition sensor. The acquired signal is processed by the first signal processing circuit board and converted into a drive signal, driving a laser signal source to generate an optical signal. The optical signal is transmitted to the first circuit board through the through-holes of the receiving and transmitting coils. The first circuit board receives the optical signal and transmits it to an external control system.

The application relates to the technical field of sensor-based metal powder mixing uniformity monitoring, and discloses a sensor-based metal powder mixing uniformity monitoring method and system, the method comprising the following steps: acquiring an acoustic emission signal generated by metal powder tumbling and performing frequency spectrum feature transformation processing to obtain a fluctuation frequency spectrum matrix; inputting the matrix into a preset residual convolutional neural network to perform feature mapping and obtaining a powder space distribution matrix; dividing the powder space distribution matrix into regions and calculating regional segmentation thresholds, and then performing spatial aggregation analysis according to the segmentation thresholds to obtain a local aggregation matrix; calculating the variance of the local aggregation matrix as a current uniformity value, taking the average of the current uniformity values obtained through continuous monitoring to obtain an average uniformity value, and if the average uniformity value is less than or equal to a preset uniformity value, it is determined that the metal powder reaches a uniform mixing state, and an end point instruction is generated. The method can realize the judgment of whether the metal powder is uniformly mixed according to a sensor signal.

The utility model relates to the technical field of refrigerator, concretely relates to a control system of double-temperature-zone independent intelligent refrigerator. The refrigerator of the present application is equipped with independent temperature and humidity sensor for each temperature zone, which can monitor the temperature and humidity data of each temperature zone in real time and accurately. Combined with the preset temperature threshold adjustment module arranged independently, the characteristics of the stored goods in different temperature zones can be targeted, and the differentiated needs of different foods for the storage environment can be met. The sensor signals of each temperature zone are electrically isolated by independent ADC module and photoelectric coupler, effectively avoiding the signal interference problem between different temperature zones.

This invention provides a semiconductor side-mounted package structure and its fabrication method, relating to the field of semiconductor device packaging technology. The package structure includes a substrate, a planar chip, a side-mounted chip, and a molding compound. One side surface of the substrate has spaced-apart mounting areas and side-mounted recesses. The front or back side of the planar chip is mounted in the mounting areas and spaced apart from the side-mounted recesses, and the planar chip is electrically connected to the substrate. The side of the side-mounted chip is mounted in the side-mounted recesses, and the front side of the side-mounted chip is angled to one side surface of the substrate and is electrically connected to the substrate. The molding compound is disposed on the substrate and covers the planar chip and the side-mounted chip. Compared to existing technologies, this invention, compared to multi-chip planar arrangements, allows for differentiation of chip electrical connections and reduces signal interference between chips, thus solving the signal interference problem in terms of performance and reducing package size.

This invention discloses a SiC-based neutron detection system for a radiation-resistant reactor core, comprising a detection device, a wireless communication device, and an industrial control computer. The wireless communication device includes a transmitter module, an antenna module, and a receiver module. The transmitter communicates wirelessly with the receiver through the antenna module, which includes a millimeter-wave transmitting antenna array and a receiving antenna array. The transmitter module converts logic-level pulse train signals into microwave signals and outputs the microwave signals to the millimeter-wave transmitting antenna array. The millimeter-wave transmitting antenna array outputs corresponding millimeter-wave signals that penetrate the reactor core wall and reach the receiving antenna array. The receiver module receives the penetrating signals through the receiving antenna array, amplifies, filters, detects, and shapes them, and then outputs them to the industrial control computer for processing and display. The neutron detection system provided by this invention ensures that the wireless communication device can operate stably for extended periods under high radiation fields, essentially overcoming the signal interference problem of wireless communication technology.

The present application provides a method and system for positioning personnel in a mine based on wireless communication, which relates to the field of mine safety technology. The method includes: data collection, model construction, prediction structure, definition of base station position and quantity, installation of UWB base station, setting of base station parameters, personnel positioning and positioning display steps; the system includes: data collection module, model construction module, prediction structure module, definition of base station position and quantity module, installation of UWB base station module, setting of base station parameter module, personnel positioning module and positioning display module. The present application defines the installation position and quantity of UWB base stations and installs UWB base stations according to the predicted number of coal mine shaft passages and the predicted terrain structure, sets base station parameters, and performs personnel positioning and display through UWB base stations, thus overcoming the signal interference of radio waves in the process of channel propagation caused by the dynamic changes in the number of coal mine shaft passages and terrain structure, and achieving the purpose of improving the accuracy of underground personnel positioning.

The invention belongs to but not limited to the technical field of pesticide residue detection, and discloses an SERS (Surface Enhanced Raman Scattering) nanoprobe for quantitatively detecting pesticide residues in water and a detection method, TMV (Tetramethylbenzidine) is adopted as a biological template, and a TMV-Pt seed is formed through rapid nucleation of Pt atoms on the outer surface of the TMV; sodium polystyrenesulfonate and ascorbic acid are used for finely regulating and controlling the growth direction of Pt seeds on the surface of the TMV; pt is promoted to form a cluster with a dendritic structure in a limited space; the diameter of the dendritic metal cluster is adjusted by controlling the reaction time, and finally TMV-DPtNCs are formed on the surface of the TMV; preparing a TMV-DPtNCs (at) rGO composite material by using the reduced graphene oxide; based on TMV-DPtNCs (at) rGO, pesticide residues in water are detected by utilizing an SERS technology. According to the invention, the lowest detection limit on the three pesticides, namely the dalarin, the carbaryl and the triazophos, can reach 10 <-7 > M; the detection on a real water sample is met.

The application discloses a device for online detection of wear depth based on a direct current voltage drop method, comprising: a testing machine for fixing a material to be tested, a friction part being arranged on the testing machine and being in contact with the surface of the material, the friction part being driven to wear the material; an analysis module; a plurality of test points; a voltage measurement module and a processing module. The application measures the change trend of the wear depth and the wear position voltage drop in the wear test process by inputting a constant direct current, a reference electrode is arranged on the back of the material to be tested, and the problems of signal interference caused by the resistivity change in the material wear environment and the fluctuation in the wear process are effectively solved; the test electrodes are arranged at opposite angles in the wear area, and the effective area of the material to be tested is effectively covered; the detection is based on Ohm's law to calculate the relationship between the wear depth and the wear position voltage drop, and the application has high applicability. The application further discloses a detection method of the device for online detection of wear depth based on the direct current voltage drop method.

This application provides a testing apparatus and system for charging equipment, relating to the field of charging equipment testing. The testing apparatus includes: a first controller, at least one second controller, a first test board, at least one second test board, a first control guide board, at least one second control guide board, a first gun holder, and at least one second gun holder; the first controller is connected to the first test board and the first control guide board, and both the first test board and the first control guide board are connected to the first gun holder; each second controller is connected to one second test board, each second test board is connected to one second control guide board, and each second control guide board is connected to one second gun holder; the first test board is also interlocked with each second control guide board, and the first control guide board is also interlocked with each second control guide board. This enables parallel and / or serial testing of charging equipment, improving testing efficiency, and allowing for collaborative sharing of test data with the production line system.

The invention relates to a brewing assembly and water supply equipment, and the brewing assembly comprises a supporting seat which is provided with a first coupler, and the first coupler is used for being electrically connected with a control panel; a second coupler is arranged at the bottom of the brewing kettle, and the second coupler is in detachable coupling connection with the first coupler; the plurality of detection devices are arranged in the brewing kettle; and the signal acquisition board is arranged on the brewing kettle, and the signal acquisition board is electrically connected with the plurality of detection devices and the second coupler. According to the brewing assembly, signals detected by the multiple detection devices can be conditioned, converted and integrated by the signal acquisition board, so that the signals can be transmitted to the control board through the second coupler and the first coupler in a unified format, the signal transmission efficiency and accuracy are improved, and the integration advantage of the signal acquisition board is utilized, so that the brewing efficiency is improved. The problem of signal interference caused by the increase of the number of rings of the coupler can be avoided, the performance and reliability of the system are improved, and the production cost is reduced.