23results about How to "Solve signal interference" patented technology

The invention provides a mine personnel positioning method and system based on wireless communication, and relates to the technical field of mine safety, and the method comprises the steps of data collection, model construction, structure prediction, base station position and number definition, UWB base station installation, base station parameter setting, personnel positioning and positioning display. The system comprises a data acquisition module, a model construction module, a structure prediction module, a base station position and number definition module, a UWB base station installation module, a base station parameter setting module, a personnel positioning module and a positioning display module. According to the method, the installation positions and the number of the UWB base stations are defined, the UWB base stations are installed and base station parameters are set according to the coal mine channel prediction number and the terrain prediction structure, personnel positioning and displaying are carried out through the UWB base stations, the signal interference influence of the coal mine channel number and the dynamic change of the terrain structure on radio waves in the channel propagation process is overcome, and the working efficiency is improved. The purpose of improving the positioning accuracy of the underground personnel is achieved.

The invention discloses a device and method for detecting phase information of an electric energy meter based on dual-mode acquisition communication equipment, and the device comprises a central coordinator which is used for network configuration and networking, guarantees the mutual communication between equipment, and transmits the phase information of the acquisition communication equipment; the acquisition communication equipment acquires power grid phase information from the central coordinator after network access is successful, and broadcasts the phase information and zero-crossing information of the acquisition communication equipment through an RS-485 communication protocol; and the plurality of electric energy meters are used for receiving and collecting the phase information and the zero-crossing information of the communication equipment, and calculating the phase information of the electric energy meters by detecting zero-crossing signals of the electric energy meters and combining the phases of the communication equipment. According to the invention, mode expansion can be carried out on the basis of the existing RS-485 communication interface, the collected zero-crossing information of the communication equipment is stably synchronized to the electric energy meter, the electric energy meter calculates the phase information by combining the zero-crossing information of the electric energy meter, and the technical scheme of the invention is simple and reliable and occupies few resources.

The invention relates to a working electrode for a dopamine electrochemical sensor, the dopamine electrochemical sensor and application of the dopamine electrochemical sensor, and belongs to the technical field of electrochemical sensors. The working electrode for the dopamine electrochemical sensor comprises an electrode substrate and defective molybdenum disulfide modified on the surface of the electrode substrate, the defective molybdenum disulfide is molybdenum disulfide with sulfur vacancy defects. According to the dopamine electrochemical sensor constructed by the working electrode, the selectivity to dopamine during detection can be enhanced, electrochemical oxidation of ascorbic acid and uric acid can be remarkably inhibited, and the problem of signal interference in the dopamine detection process is solved in a targeted manner.

The invention relates to the technical field of vehicle-mounted electric appliance connection, in particular to a high-shielding vehicle-mounted connector and an outer conductor deep drawing process, the high-shielding vehicle-mounted connector comprises an insulator, a center pin, an outer conductor and a cable, a mounting channel is formed in the insulator, the center pin is fixedly mounted in the mounting channel, a cable core of the cable is electrically connected with the center pin, and the outer conductor is fixedly mounted in the mounting channel. The outer conductor is a shielding tube which is integrally formed by a thin copper material through a deep drawing process, the outer conductor is divided into a matching area, an assembling area and a crimping area, the matching area and the assembling area of the outer conductor are sleeved outside the insulator, a sleeve is sleeved outside the crimping area of the outer conductor, and the sleeve is sleeved outside the assembling area of the outer conductor. And the parts, sleeved outside the insulator, of the matching area and the assembling area on the outer conductor correspond to a central pin in the insulator, so that when the connector is connected with peripheral equipment through the central pin, the problem of signal interference caused by signal leakage of the outer conductor used by the existing connector is solved.

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 invention discloses a communication resource configuration method and device, computer equipment and a storage medium. The method belongs to the technical field of wireless communication, and specifically comprises the following steps: determining a first cell frequency band and a second cell frequency band according to a frequency interval of a base station carrier; and taking the frequency band of the first cell as a beam frequency band of an air cell, and taking the frequency band of the second cell as a beam frequency band of a ground cell. And according to the first cell frequency band and the second cell frequency band, respectively configuring a control channel bandwidth and a service channel bandwidth of the to-ground cell and a control channel bandwidth and a service channel bandwidth of the to-air cell. According to the method, the first cell frequency band and the second cell frequency band do not contain the same frequency band, so that the problem of signal interference existing in the air cell and the ground cell can be effectively solved, the communication quality of low-altitude users and ground users is effectively improved, and the user satisfaction degree is further improved.

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 utility model provides a monitor and monitoring equipment. A parameter detection circuit, a main control module, a power circuit and an isolation circuit in the monitor are arranged on the same side of a circuit board, the first end of the power circuit is connected with the first end of the isolation circuit, and the second end of the isolation circuit is connected with the power end of the parameter detection circuit. And supplying power to the parameter detection circuit. The first end of the main control module is connected with the third end of the isolation circuit, the fourth end of the isolation circuit is connected with the signal end of the parameter detection circuit, and the main control module is used for conducting data processing on physiological parameter signals detected by the parameter detection circuit under the condition that the main control module and the parameter detection circuit are in circuit isolation. The isolation circuit is arranged on the circuit board in a hollowed-out mode, signal interference of the parameter detection circuit is eliminated, all circuit modules are highly integrated on the circuit board, the purpose of reducing the size of the monitor is achieved, and the problem that a traditional monitor is large in size is solved.

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.

The utility model provides a monitoring platform for octopus in a marine ranch, which comprises a platform main body, the platform main body comprises a base fixed in a substrate layer, the top of the base is fixedly provided with a monitoring platform, the monitoring platform is provided with a seawater monitoring device, the seawater monitoring device comprises an automatic water sampler, the center of the base is provided with a water sampling channel, and the water sampling channel is communicated with the automatic water sampler. The automatic water sampler moves up and down along the water sampling channel, and the water sampling channel is communicated with seawater; the platform body further comprises a fixing plate, the right side of the fixing plate is perpendicularly connected with the end of the monitoring platform, a top plate is further arranged above the monitoring platform, a weather monitoring device is arranged on the top plate, the end of the top plate is perpendicularly connected with the fixing plate, a protective cover is arranged between the monitoring platform and the top plate, and the seawater monitoring device is located in the protective cover. The seawater monitoring device and the weather monitoring device are respectively provided with a memory, the memory is connected with a data transmission line, and the data transmission line is connected with a data transmission device; an observation platform is further arranged on the left side of the fixing plate, the observation platform is communicated with the monitoring platform, and the data transmission device is fixed to the observation platform.

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 provides a therapeutic preparation for improving the nerve injury repair capacity of neural stem cells, and belongs to the technical field of neurobiology. The therapeutic preparation provided by the invention aims to improve the survival rate and neural differentiation capacity of neural stem cells during hypoxia treatment through two-stage pretreatment. The treatment preparation consists of a pretreatment culture medium 1 and a pretreatment culture medium 2, wherein the pretreatment culture medium 1 comprises a basic culture medium, N-acetylcysteine, Kunyuenin-1 polypeptide, an epidermal growth factor and a basic fibroblast growth factor; the pretreatment culture medium 2 comprises a basic culture medium, ligustrazine, astragalus polysaccharide and brain-derived neurotrophic factors. Experimental results show that the therapeutic preparation improves the survival rate of the neural stem cells in an anoxic environment and the expression level of a neural differentiation marker gene, and the effect of the therapeutic preparation is superior to that of single-stage treatment or direct mixing treatment, so that the neural stem cells can better realize damage repair of a nervous system.

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 utility model provides a switch and a signal processing system, and relates to the technical field of computer networks, the switch comprises a box body, a processing assembly, an optical port assembly, a connecting assembly, a mainboard assembly and a power supply part, and the processing assembly, the optical port assembly, the connecting assembly, the mainboard assembly and the power supply part are all located in a cavity of the box body; the optical port assembly comprises a plurality of optical port members, and the plurality of optical port members are arranged in an array along the direction crossing the optical port members to the mainboard assembly, so that the internal space of the box body is reasonably utilized, and the use number of the optical port members of the switch is increased; the first ends of the plurality of sub-connecting pieces of the connecting assembly are connected with the plurality of optical port pieces in a one-to-one correspondence manner, and the second ends of the plurality of sub-connecting pieces are connected with the mainboard assembly, so that one-to-one correspondence information transmission between the mainboard assembly and the plurality of optical port pieces is realized; and meanwhile, the problem of signal interference caused by complex wiring between the mainboard component and the optical port component of the traditional switch is avoided, and the data transmission efficiency of the signal processing system is improved.

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.