62results about How to "Reduce electromagnetic radiation" patented technology

According to the B1-level flame-retardant cable provided by the utility model, a combined structure of the low-smoke halogen-free flame-retardant layer, the inner flame-retardant layer and the outer flame-retardant layer is introduced, so that the cable is excellent in performance under a fire hazard condition, the cable core is effectively prevented from being burnt, and basic functions of an electrical system can be kept in a certain time when the fire hazard occurs in time; and adverse effects of fire on equipment and lines are reduced. Meanwhile, the shielding layer arranged on the cable prevents signals in the cable from external electromagnetic interference, electromagnetic radiation of the cable to the external environment is reduced, the water-blocking layer effectively improves the water-blocking performance of the cable, the wear-resistant outer sheath ensures the compactness of the structure in the outer sheath, the wear-resistant outer sheath is more wear-resistant, and the service life of the wear-resistant outer sheath is prolonged. The cable cannot be easily damaged during use, and the service life of the cable is ensured. Therefore, the B1-level flame-retardant cable has good flame-retardant performance and excellent performance, and is excellent in performance in a complex environment, and a reliable solution is provided for the stability and reliability of an electric power system.

The invention relates to a pipe fitting and plate forming method adopting a magnetic collector shaped like a Chinese character'tu ', which comprises the following steps of: manufacturing the annular magnetic collector shaped like the Chinese character'tu' with a coil accommodating cavity, and placing a driving coil in the coil accommodating cavity; workpieces to be formed are arranged and fixed on the upper side, the lower side, the inner side and the outer side of the magnetic collector respectively; connecting the driving coil to a pulse power supply through a discharge switch; and the discharge switch is controlled to supply power to the driving coil, and induced eddy current is generated in the to-be-formed pipe fitting and the to-be-formed plate to enable the pipe fitting and the plate to deform, so that the forming specification is achieved. The invention further discloses a device for simultaneously forming various pipe fittings and plates. According to the invention, simultaneous forming of pipe fitting bulging, pipe fitting compression and plate fitting bulging is realized, the workpiece forming efficiency is multiplied, electromagnetic radiation to the environment in the workpiece electromagnetic forming process is reduced, and the device is more energy-saving and environment-friendly.

The present invention provides a flexible sheet of broadband wave-absorbing metamaterial based on carbon-based materials. The sheet comprises a reflective layer and a dielectric layer embedded with periodically arranged structural units. The dielectric layer is arranged above the reflective layer. The preparation of the sheet comprises the following steps: the dielectric layer is arranged according to the size of the periodic resonant structural unit, and every other unit cell is arranged. P The size of the double-layer concentric cylindrical hole is mechanically punched; the small hole side of the medium plate with the hole is cleaned with anhydrous ethanol, and the reflective layer is applied; the graphene or carbon nanotubes are mixed with the adhesive to form a carbon composite for use; the graphene or carbon nanotubes are filled into the periodically arranged holes in step 1 with a scraper; the carbon composite is dried naturally until it is completely dry. The flexible sheet of this patent achieves a wide-band wave absorption effect in the range of 2 to 18 GHz, has a simple manufacturing process, is easy to use, can be applied to the object to be measured, and effectively reduces the characteristic signal of the radar wave of the target object.

The utility model relates to the field of photovoltaic solder strip production process equipment, in particular to a special annealing device for a photovoltaic solder strip based on an induction annealing principle and equipped with nitrogen protection. The problems that a short-circuit annealing mode is usually adopted in annealing of the copper wire, but the mode is prone to causing unstable yield strength of the copper wire and rising of the wire breakage rate when the superfine welding strip is processed, and the production efficiency is seriously affected are solved. The device comprises a machine table and further comprises an induction heating assembly, and when a copper wire passes through the induction heating assembly, the induction heating assembly heats the copper wire; the nitrogen protection assembly is provided with a closed annealing cavity, the annealing cavity is the annealing position of the copper wire, and the nitrogen protection assembly injects nitrogen into the annealing cavity in the annealing process of the copper wire; according to the utility model, the advanced temperature sensor and the PID controller are adopted, so that the real-time monitoring and accurate control of the heating temperature of the copper wire are realized.

According to the battery equalization method based on the alternating induction current, the induced electromotive force generated by the alternating current is effectively utilized, the energy use efficiency is improved, and energy is saved. The current for charging comes from the induction current generated by the coil, and the charging power supply is physically isolated from other circuits in the system, so that mutual interference and influence caused by circuit faults and chain reaction are avoided, and the system is safer and more reliable. A magnetic field generated by alternating current is utilized to generate induced electromotive force, the magnetic field is converted into an electric field to be consumed, the magnetic field is effectively restrained, and electromagnetic radiation is reduced.

The application discloses an environmental protection gas load switch and belongs to the electrical equipment field, which is used to solve the problem of how to inhibit or eliminate the arc generated when the static contact and the moving contact of the load switch are disconnected. The environmental protection gas load switch comprises a shell, a moving contact, an operating mechanism, a first static contact and an arc extinguishing device. The moving contact is rotatably arranged in the interior of the shell, the operating mechanism is used for controlling the rotation of the moving contact, and the first static contact is fixedly arranged in the interior of the shell. The arc extinguishing device comprises a shell body, a rotating arm, a vacuum bubble and a reset spring, the shell body is fixedly arranged on the shell, the rotating arm is rotatably arranged on the shell body and is provided with an electrically conductive part, the electrically conductive part is arranged on the rotating path of the moving contact, the vacuum bubble is arranged on the shell body, and the two ends of the vacuum bubble are electrically connected with the electrically conductive part and the first static contact respectively, and the reset spring is arranged between the rotating arm and the shell body. When the moving contact is disconnected with the first static contact, the moving contact is electrically connected with the electrically conductive part.

The utility model relates to the technical field of heating cables, in particular to a heating cable for a high-grade building, which comprises two heating conductors which are symmetrically arranged, and a high-temperature-resistant insulating heat conductor I with a convex section is arranged between the two heating conductors. The two heating conductors abut against the left side and the right side of the protruding end of the first high-temperature-resistant insulating heat conductor respectively, an insulating block is arranged in the protruding end of the first high-temperature-resistant insulating heat conductor, and a heat insulation layer is arranged at the protruding bottom of the first high-temperature-resistant insulating heat conductor. The upper portions of the two heating conductors are covered with a second inverted-U-shaped high-temperature-resistant insulating heat conductor, the two ends of the U shape of the second high-temperature-resistant insulating heat conductor make contact with the surface of the heat insulation layer respectively, and an electromagnetic shielding layer is arranged outside a ring formed by the second high-temperature-resistant insulating heat conductor and the heat insulation layer. According to the electromagnetic shielding heating cable, the heat dissipation area can be increased, and meanwhile the heat radiation heating efficiency is improved.

This application relates to the field of electrothermal materials, and in particular to a self-regulating heating cloth with low electromagnetic radiation. The self-regulating heating cloth with low electromagnetic radiation includes an insulating silicone protective layer and a base fabric. The base fabric is woven with several self-regulating heating wires, several first conductive strips, and two second conductive strips. The first and second conductive strips are both conductive composite yarns, which are composed of several conductive composite yarns, including S-twist conductive composite yarns and Z-twist conductive composite yarns, which are spaced apart to form the conductive composite yarn. The self-regulating heating cloth of this application has low electromagnetic radiation intensity and better safety performance.

The utility model discloses a printed circuit board, a communication device and a vehicle. The printed circuit board comprises a dielectric related interface, an electrostatic impedor, a common-mode resistor, an alternating-current coupling capacitor, a common-mode filter and a control chip, and a differential signal line is connected to the control chip through the electrostatic impedor, the common-mode resistor, the alternating-current coupling capacitor and the common-mode filter in sequence; wherein the differential signal lines are arranged based on a cross-layer reference mode; wiring of the positive signal line and the negative signal line of the differential signal line, pin bonding pads on wiring paths and via holes in the wiring paths are all symmetrically arranged, and the positive signal line and the negative signal line are matched in equal length. Through the symmetrical arrangement and equal-length matching of the differential signal lines and the use of the electrostatic impedor, the common-mode resistor, the alternating-current coupling capacitor, the common-mode filter and other elements, noise and interference are effectively suppressed, and the integrity of signals is improved. The cross-layer reference and the reasonable wiring strategy help to reduce electromagnetic radiation and sensitivity, and improve the electromagnetic compatibility of the printed circuit board.

This invention belongs to the field of nanomaterials technology, specifically relating to a heating wire, its preparation method, and its application. The method for preparing the heating wire provided by this invention involves impregnating filamentous carbon nanotube fibers in a graphene-containing resin dispersion and then curing it. The resin layer containing graphene material encapsulates the filamentous carbon nanotube fibers. The filamentous carbon nanotube fibers prepared by this invention exhibit stable heating. When used in the heating system of a gas element analyzer, the heating wire exhibits low electromagnetic radiation and minimal interference with the hardware, making it more suitable for high-precision testing. The filamentous carbon nanotube fibers prepared by this invention have the advantages of stable heating and resistance to oxidation. The resin layer encapsulating the filamentous carbon nanotube fibers protects the carbon nanotubes, isolates them from air, and extends the service life of the heating element's carbon nanotubes.

The utility model relates to the technical field of transformers, in particular to a double-shielding boosting transformer which comprises an upper magnetic core and a lower magnetic core which are arranged oppositely. The lower magnetic core comprises a lower bottom column, a first lower middle column, a second lower middle column and a lower side column; the upper magnetic core comprises an upper bottom column, a first upper middle column, a second upper middle column and an upper edge column; a first core column is formed between the first upper middle column and the first lower middle column in an abutting mode. A second core column is formed between the second upper middle column and the second lower middle column in an abutting mode. A peripheral column is formed between the upper side column and the lower side column in an abutting mode. According to the utility model, after the first coil is wound around the first winding groove and the second coil is wound around the second winding groove, electromagnetic interference between the first coil and the second coil can be effectively reduced through a shielding structure formed by the upper bottom column, the lower bottom column and the second core column; in addition, electromagnetic radiation of the transformer can be effectively reduced through a shielding structure jointly formed by the upper bottom column, the lower bottom column and the peripheral column.

The application relates to a preparation process of an electromagnetic protection magnetic health-care fabric. The preparation process of the electromagnetic protection magnetic health-care fabric comprises the following steps: preparation of nano Fe-Co oxide magnetic powder; preparation of graphene-coated nano Fe-Co oxide magnetic particles; and spinning and textile of the magnetic health-care fabric. The spinning process comprises the following main process steps: cotton mixing, carding, drawing, combing, roving, spinning, bobbin winding, beam warping, harness threading and weaving. The nano Fe-Co oxide has excellent electromagnetic wave absorption capacity, the surface performance of the nano Fe-Co oxide is improved by coating nano graphene, the wave absorption capacity of the magnetic health-care fabric is enhanced, the magnetic health-care fabric is prepared by combining the magnetic field of the magnetic material and the magnetic health-care effect on the human body, and the magnetic health-care fabric has the advantages of protecting the human body, reducing the electromagnetic radiation of various electronic devices on the human body, and the like, health, bacteriostasis, magnetic health care and the like.

The embodiment of the utility model discloses a temperature control circuit and a physical therapeutic apparatus. The temperature control circuit comprises a control unit, an optocoupler, a silicon controlled rectifier, a 36V alternating current power supply unit and a heating output interface, the control unit is electrically connected with the main control board through the first socket; the optocoupler is electrically connected with the control unit; the silicon controlled rectifier is electrically connected with the optocoupler; the 36V alternating current power supply unit is electrically connected with the silicon controlled rectifier; the heating output interface is electrically connected with the silicon controlled rectifier and the 36V alternating current power supply unit respectively; the heating output interface is used for connecting a to-be-heated device. The control unit is used for controlling the optocoupler to start, the optocoupler is used for controlling the silicon controlled rectifier to conduct, the 36V alternating current power supply unit is used for supplying power to the silicon controlled rectifier, and the technical problems that in the prior art, a heating power source of a physical therapeutic apparatus is low in safety and electromagnetic radiation cannot meet the requirement in the high-power heating process are solved. The technical effects of improving the safety of the circuit and reducing the electromagnetic radiation of the circuit are achieved.

The invention relates to the technical field of heating wire preparation, in particular to a heating wire and a preparation method thereof. A heating wire comprises a core wire, a self-temperature-limiting electric heating layer and a cable insulating layer, and the core wire is any one of a pure copper wire, a copper alloy wire, a nickel-plated copper wire, an aluminum alloy wire, an aluminum / copper / aluminum composite wire and a copper-plated aluminum alloy wire; the self-temperature-limiting electric heating layer is made of an electric heating material with an intelligent temperature control function; the cable insulating layer is any one of a PVC insulating layer, a TPU insulating layer and a TPEE insulating layer; and the conductivity rho 1 of the core wire is 75-102% IACS (International Annealed Copper Standard). Compared with an existing soft copper wire and an existing nickel-plated copper wire, the heating wire provided by the invention is relatively low in production cost and more excellent in use safety performance, meanwhile, the self-temperature-limiting electric heating layer emits far infrared rays for heating, the function of a shielding layer can be achieved, electromagnetic radiation generated by the core wire is greatly weakened, the overall production cost is reduced, and the service life of the heating wire is prolonged. And the lightweight design requirement is met.

The invention provides a vehicle-mounted high-voltage PTC control circuit. The vehicle-mounted high-voltage PTC control circuit comprises a switching tube Q, an inductor L, a diode D and a capacitor C, the first end of the switching tube Q is connected with an input power supply; one end of the inductor L is connected with the second end of the switching tube Q, and the other end of the inductor L is used for connecting one end of the vehicle-mounted high-voltage PTC and one end of the capacitor C; the negative electrode of the diode D is connected with the second end of the switching tube Q and one end of the inductor L. The positive electrode of the diode D is connected with the grounding end, the other end of the capacitor C and the other end of the vehicle-mounted high-voltage PTC. The PTC is controlled by the control circuit, stable voltage can be effectively output, the change rate of voltage and current is more controllable, after the voltage is stabilized by the control circuit, the change of the voltage and the current becomes smooth, and generation of electromagnetic radiation is effectively reduced. After the voltage is stabilized, the current in the grounding loop is more stable, and the stable grounding current can reduce the generation of noise voltage, thereby reducing the influence of electromagnetic radiation on the system.

The utility model discloses a wireless charging device, which comprises a receiving coil, a receiving coil shell, a transmitting coil, a transmitting coil shell and a connecting piece, the receiving coil is arranged in the receiving coil shell; the transmitting coil is arranged in the transmitting coil shell; when the transmitting coil shell is moved to the receiving coil shell and the transmitting coil shell and the receiving coil shell are aligned to a preset position through the connecting piece, the transmitting coil and the receiving coil directly face each other and are in a matched state, and the gap and the offset between the transmitting coil and the receiving coil are smaller than or equal to a set threshold value. According to the utility model, the coil dislocation during charging can be reduced, the coil area can be reduced, the requirement for foreign matter detection can be reduced, and electromagnetic radiation can be reduced, so that the charging safety is ensured while the charging efficiency is ensured, and the manufacturing cost of the charging device is reduced.

The utility model provides a filtering assembly and a vehicle. The filtering assembly is used for a control assembly of the vehicle and comprises a connecting assembly and a circuit board, one end of the connecting assembly is used for being connected with a power signal, and the other end of the connecting assembly is used for being electrically connected with the control assembly; the circuit board is provided with a filter circuit and a bleeder circuit, and the connecting assembly is electrically connected with the filter circuit and the bleeder circuit. The filter circuit and the bleeder circuit are located on the two opposite sides of the circuit board respectively, and the connecting assembly and the circuit board are arranged in the direction perpendicular to the thickness direction of the circuit board. The filtering assembly provided by the utility model can improve the conduction test passing rate of the electric drive assembly.

The invention relates to a high-efficiency power supply circuit which is characterized by comprising an input rectification module which is arranged by adopting a bridge type rectification circuit structure and is used for converting input alternating current into direct current, the output end of the input rectification module is connected with an APFC booster circuit, the output end of the APFC booster circuit is connected with a resonance circuit, and the resonance circuit is connected with an output end of the input rectification module. The LLC resonant circuit is used for improving voltage conversion efficiency and reducing switching loss through a soft switching function, an output end of the LLC resonant circuit is connected with a synchronous rectification circuit, and the synchronous rectification circuit is used for rectifying output of the LLC resonant circuit and providing rectified direct current for a subsequent load or a battery for charging.

The invention discloses a wire harness signal transmission efficiency evaluation system based on multi-dimensional analysis, and relates to the field of data analysis, and the main scheme is as follows: calculating a signal quality to resistance change ratio ZAa, an electrical signal consistency index ZBa, an electromagnetic compatibility electrical efficiency index ZCa, an electrical communication performance index ZDa and an aging risk degree index ZGa according to different types of indexes; and the evaluation value Ya of the wire harness signal transmission rate is further calculated, and the relevance among various types of data is comprehensively considered, so that the problem that the wire harness signal transmission rate is evaluated by adopting a single type of indexes or various types of indexes are ignored to influence each other is solved.

The application provides a harmonic suppression radio frequency power amplifier, wherein one end of an input matching circuit is connected with a radio frequency input end; the other end of the input matching circuit is connected with a base of a power amplifier tube; a collector of the power amplifier tube is connected with a power supply voltage through a first matching branch; an emitter of the power amplifier tube is connected with a first connecting point on a packaging substrate; the collector of the power amplifier tube is connected with a radio frequency output end through a second matching branch; the second matching branch is connected with the packaging substrate; a first end of a harmonic control circuit is connected with the collector of the power amplifier tube; a second end of the harmonic control circuit is connected with a second connecting point on the packaging substrate; a metal layer farthest from the power amplifier tube in a plurality of metal layers of the packaging substrate is a first metal layer; the first connecting point and the second connecting point are located on a second metal layer in the plurality of metal layers, and the first connecting point is connected with the second connecting point; and the second metal layer is a metal layer closest to the power amplifier tube in the plurality of metal layers.

The invention provides a test module and a test device, a capacitor assembly and a switch assembly are both located in a frame assembly, and the capacitor assembly and the switch assembly are connected with a semiconductor device to be tested. Wherein the switch assembly comprises a protection switch, and the protection switch is connected with the capacitor assembly. In the direct-current pulse capacitor discharging process, the protection switch can perform overvoltage protection on the capacitor bank, and damage to the tested semiconductor device and the test module can be avoided. In other words, the test module provided by the invention is high in reliability. The switch busbar is connected according to a device connection mode and layout, the loop distance is short, the back-and-forth superposed parasitic inductance is low, the stray inductance is low, and the problem that the parasitic inductance generates voltage and current overshoot under the condition of high current change rate is effectively solved. Therefore, the switch busbar not only can meet the requirements of voltage resistance, insulation and heat dissipation, but also can effectively improve the problems of turn-off voltage peak, voltage and current waveform distortion and the like, and reduces the voltage stress on a tested semiconductor device.

The invention relates to the field of PLC state control, in particular to a PLC-oriented state space model-based optimization control method and system, and the method comprises the steps: (I) obtaining environment monitoring data collected by a PLC control cabinet, and defining a state space equation; (II) the PLC divides and generates an offline block, an online block and a function operation block according to the collected environment monitoring condition; (III) constructing a model according to the environmental monitoring data, and writing a function block at the same time to realize discretization of an environmental state space equation; (IV) initializing the parameters of the controller again, turning on the trigger switch, starting the operation of the controller, and realizing the transmission of the action instruction of the controlled object; and (V) if the controlled object feeds the working data back to the controller, a function block is calculated, working environment parameters are changed, the step (I) is repeated, and a system control closed loop of the PLC is realized. The method has the characteristics that the PLC system is more convenient to control, adjust and maintain, and the operability and the maintenance cost of the system are reduced.

The invention discloses a moisture-proof and radiation-proof energy-saving lamp capable of predicting mine collapse. The energy-saving lamp comprises a device body, a mounting seat is arranged at the top of the device body, a pressure sensor is arranged at the top of the mounting seat, bolts are arranged at both ends of the mounting seat, a connecting rod is arranged in the middle of the mounting seat, a lampshade is arranged in the middle of the connecting rod, a bolt sleeve is arranged at the top of the lampshade, a piston sleeve is arranged at the bottom of the connecting rod, an alarm is arranged on the piston sleeve, a glass bulb cover is arranged at the bottom of the piston, an energy-saving lamp is arranged at the bottom of the piston sleeve, the energy-saving lamp consists of a lamp holder, a lamp holder and a lamp tube, a ballast is arranged inside the lamp holder, an electromagnetic shielding cover is arranged on the surface of the ballast, and an ionizing radiation shielding cover is arranged on the surface of the lamp tube. The energy-saving lamp can only sense the pressure at the top of the mine to ensure the safety of workers, and can also sense the air humidity in the mine to dry the lamp; the electromagnetic radiation emitted by the ballast can be reduced by arranging a metal mesh on the surface of the ballast, and the ionizing radiation generated when the ballast is emitted can be shielded by arranging lead glass on the surface of the lamp tube.

The present invention discloses a contactless wireless charging system for a robot astronaut, comprising a transmitter and a receiver. The transmitter is mounted on a charging platform of a spacecraft, and the receiver is mounted on an energy pack of a space robot; a battery management module is arranged on the energy pack to be connected to the receiver. The transmitter and the receiver exchange information through carrier communication, the inverter module of the receiver converts the DC power supply of the spacecraft bus into AC power, and the transmitting coil and the receiving coil complete the wireless and contactless transmission of electric energy through electromagnetic induction. The receiver is equipped with a battery management module to achieve high-precision charging and discharging and balanced control to ensure that the battery operates in a safe domain. During the charging process, no metal is directly exposed to the space environment, and the risks of short circuit, arcing, and mechanical interface jamming are completely eliminated, meeting the requirements of safety, stability, and adaptability to the space environment, realizing unmanned and intelligent stop-and-go charging and charge-and-go, and effectively improving the work efficiency of the robot astronaut.

The invention discloses a clock synchronization method and a video transmission device. The method comprises the following steps: receiving a target end reference clock signal, and sending a video input signal from a source end; according to a video input signal, measuring the length when a frame comes out; measuring target end clock measurement data between two specific positions of the input video signal by using a target end reference clock signal, and obtaining source end clock measurement data between the two specific positions of the input video signal according to the frame time length; generating a control instruction according to a synchronous position difference value of the reference video time sequence and the input video signal; and sending the control instruction and the clock measurement data to a source end to indicate the source end to change the clock frequency according to the control instruction and the clock measurement data. According to the invention, video synchronization can be realized in a common video transmission mode, the cost is not increased, and a transmission link is not damaged.

The present invention discloses a stator-rotor system and an axial permanent magnet power device. The system can form an integrated electromagnetic shielding structure with a motor body. Compared with the shielding method used in ordinary motors, the ideal electromagnetic radiation shielding efficiency can be achieved by adding limited weight. The multiple maze structures formed between the stator and the rotor effectively attenuate the external electromagnetic radiation of the motor and the external electromagnetic interference to the motor, effectively reduce the electromagnetic radiation of the motor, and also effectively improve the anti-electromagnetic interference ability of the motor. In addition, the dustproof, rainproof and other protection capabilities of the motor are also improved, and the heat dissipation of the motor is not affected.

The present application relates to a motor with high electromagnetic compatibility level, comprising a stator assembly, a rotor assembly and an end cover assembly, the stator assembly comprises a metal shell, the rotor assembly comprises a rotor core and a rotor shaft, the end cover assembly comprises an end cover, the shell comprises a first end provided with a bearing chamber and an open second end opposite to the first end, the motor is further provided with a metal cover, the cover is provided with a plurality of retaining tabs on its peripheral edge, the end cover is provided with a plurality of positioning protrusions on its peripheral outer surface, a positioning notch for cooperating with the positioning protrusions and a retaining notch for cooperating with the retaining tabs are arranged at the end edge of the second end of the shell, so that the rotor assembly and the end cover assembly are completely encapsulated in the shell by the cover, so that the motor as a whole is in a metal closed structure. The present application also relates to an automobile seat comprising the above motor. By using the motor according to the present application, electromagnetic radiation of the motor can be more effectively suppressed, and a very high EMC level can be obtained.

The present invention discloses a cable TV terminal connection module, comprising an upper frame cover, a printed board for connecting a cable and a connecting wire, and a lower frame cover, wherein the upper frame cover and the lower frame cover are mutually covered by a first buckle assembly, the printed board is located between the upper frame cover and the lower frame cover, one side of the printed board is provided with a radio frequency interface for connecting the connecting wire, the lower frame cover is provided with a first connection hole for exposing the radio frequency interface, and the radio frequency interface is exposed on the outer surface of the lower frame cover through the first connection hole; the other side of the printed board is provided with a nut for connecting a cable TV cable, the lower frame cover is provided with a through hole for the cable to pass through, and the cable passes through the through hole on the lower frame cover and is connected to the nut. The present invention fixes the cable TV printed board interface assembly in a housing, can improve the safety of the cable TV interface module and reduce electromagnetic radiation, and at the same time reduces the steps of installing the cable TV line, and prevents the construction personnel from being scratched by the welding pins on the surface of the printed board during the installation process.

The utility model provides a plant table lamp, and relates to the technical field of lamps, the plant table lamp comprises a corrugated rod, a lamp base and a lamp holder, the lamp base and the lamp holder are connected through the corrugated rod, a potted plant placing groove is arranged in the lamp base, a stabilizing device is installed in the potted plant placing groove, and a potted plant is placed in the potted plant placing groove through the stabilizing device. Different types of plants are placed in the potted plant containing groove of the lamp base, the ornamental value is improved, the effects of improving the air quality, removing air dust and the like can be achieved, light emitted by the lamp holder is a factor for plant growth, and the plant growth effect is good. The lamp base not only has an illumination function, but also can enable plants to obtain sufficient illumination required by photosynthesis in an environment without illumination, can fix potted plants through the arrangement of the stabilizing device, so that the potted plants are prevented from overturning, and after the potted plants are placed in the lamp base, the potted plants are prevented from falling off. And the gravity can play a role in stabilizing the device.

The present invention relates to the technical field of communication vehicles, and relates to an electromagnetic protection device for a power wall box and a signal introduction board of a communication vehicle, the protection device comprising: a shielding box main body, a plurality of electromagnetic protection sub-boxes arranged in the protection box main body, a first sub-panel and a second sub-panel arranged in the electromagnetic protection sub-box, the first sub-panel and the second sub-panel being connected by a circuit connection line; at least three groups of vertical partition walls and at least four groups of horizontal partition walls are arranged inside the shielding box main body, a plurality of groups of slideways are horizontally arranged on two adjacent groups of the vertical partition walls along the box door direction of the shielding box main body, slide grooves are arranged on the side walls of the electromagnetic protection sub-box, and the slide grooves are slidably connected to the slideways. The present invention adopts a split setting for the shielding box, and the external devices of the power protection wall box and the signal introduction device are safer during the connection process, and there is no need to worry about other parts of the signal introduction device being damaged due to environmental reasons.