6results about How to "Solving Electromagnetic Compatibility Issues" patented technology

The invention relates to the technical field of filters, in particular to an internal shielding component of a power filter, which comprises a shell, a cover plate is mounted at the top of the shell through a cross recessed countersunk head screw, and a metal partition plate is arranged on one side of the inner wall of the shell; the wave-proof sleeve is welded on one side wall of the shell, and the material of the wave-proof sleeve is light nickel-plated copper fabric; when the power supply filter is used, the problem that crosstalk coupling is formed between interference signals can be prevented, the electromagnetic compatibility in the signal transmission process between systems is solved, the anti-wave sleeve is adopted for shielding power supply input of the power supply filter, interference of an input cable on other signals is greatly restrained, and the service life of the power supply filter is prolonged. The electromagnetic compatibility problem of the whole system caused by the fact that high-frequency noise is coupled to a power line is prevented, the shielding effectiveness is improved, the problem of filtering post-stage electromagnetic interference signals is greatly restrained, meanwhile, the heat dissipation area is increased, and the heat dissipation efficiency and effect are improved.

The invention relates to a method for improving harmonic interference based on a clock spread spectrum technology, which comprises the following steps of: in a subarray level radar control system, generating a CLK clock signal as a sampling clock of serial input data and a main frequency clock of chip internal logic processing by a digital component FPGA (Field Programmable Gate Array); and a CLK clock signal with a stable period generated by the FPGA is converted into a pseudo-random period clock signal. According to the invention, the CLK clock signal generated by the FPGA is directly converted into the pseudo-random periodic clock signal, and spectrum spreading is carried out on the CLK clock signal, so that the CLK clock signal has a smaller peak energy value, and the problems of harmonic crosstalk modulation and electromagnetic compatibility in the prior art are solved.

The utility model discloses an Internet of Things lighting control system, an AC / DC unit converts received commercial power into DC bus voltage and respectively inputs the DC bus voltage to a first DC / DC unit and a second DC / DC unit, the first DC / DC unit supplies power to a light source module, and the second DC / DC unit supplies power to a control module. The communication unit cooperates with the control module and is used for being connected with an external system platform to receive and transmit signals. The metering module is used for acquiring circuit information and uploading the circuit information to an external system platform through the control module and the communication unit. According to the utility model, signals of an external system platform can be received through the communication unit, on-off and dimming control of the light source module can be realized through the control module, circuit information can be detected through the metering module and transmitted to the system platform through the communication unit, and detection of data such as circuit voltage, current, internal resistance, brightness of the light source module and the like can be realized. And displaying and applying the data.

The application discloses a multi-source heterogeneous fusion-based AIoT global perception sensor module of a UAV, which comprises a perception layer composed of image, ranging and environmental physical quantity sensors; a data fusion processing unit based on an FPGA+ARM heterogeneous architecture, which is used for time-space synchronization, feature-level fusion and semantic analysis of multi-source data; a communication and interface unit; an isolated power management unit and a protective shell.The module completes pixel-level registration, RGB-D generation and lightweight AI inference at an edge end, outputs a global semantic map containing an obstacle category, depth information and environmental parameters, and transmits the global semantic map to a flight control and a ground station in real time through a CAN bus and wireless data transmission.The design realizes millisecond-level close coupling fusion of multi-source data, solves the problems of poor real-time performance, asynchronous conflict and bandwidth bottleneck in a traditional scheme, and significantly improves all-weather autonomous perception and obstacle avoidance capability of the UAV.

This utility model discloses a filter integrating differential-mode and common-mode inductors, comprising a housing, an inductor assembly, and a tap assembly. A shielding plate is disposed within the housing. The inductor assembly includes a differential-mode inductor and a common-mode inductor, respectively disposed in the left and right cavities. The tap assembly includes two taps, each consisting of a main portion and two branches. The two branches pass through the top wall of the housing and enter the left and right cavities, respectively. Two independent coils are mounted on the core of the common-mode inductor. A bi-wire wound coil is mounted on the core of the differential-mode inductor. One end of each independent coil is connected to one branch of a tap, and the other end passes through the housing. Each independent coil corresponds to one tap. One end of a wire in the bi-wire wound coil is connected to the other branch of a tap, and the other end passes through the housing. Each wire in the bi-wire wound coil corresponds to one tap. This structure reduces space occupation, lowers production costs, and provides efficient energy transmission and filtering effects.

The invention discloses a residual cable rack device, and relates to the technical field of cable fixing devices, the residual cable rack device comprises a support and a windlass, the support and the windlass are made of insulating materials, and the windlass is arranged in the support; a shaft barrel is arranged in the middle of the windlass, and multiple sets of separation discs are arranged on the surface of the shaft barrel. According to the device disclosed by the invention, the redundant cables are wound on the windlass, the multiple redundant cables are isolated by arranging the separation page, the problem that an existing redundant cable rack can only fix one cable and is not suitable for underground space is solved, the multiple sets of redundant cables are fixed in order, the number of used devices is reduced, the occupied space is saved, and electric shock short circuit of the cables is avoided; therefore, the safety risk is reduced.