841 results about "Metallic enclosure" patented technology

The invention belongs to the technical field of industrial measurement, and discloses a pump machine metal shell size detection method based on image analysis, which comprises the following steps: synchronously acquiring image data of a pump machine metal shell in a visible light wave band and a near-infrared wave band; the contrast ratio of image data is optimized through a dynamic exposure control technology, and a high-dynamic-range multispectral image is obtained; three-dimensional geometric information of the pump machine metal shell is obtained, registration fusion is carried out on the three-dimensional geometric information and the high-dynamic-range multispectral image, a dense three-dimensional point cloud model with multispectral textures is constructed, and a multi-frequency heterodyne algorithm is adopted to process a high-reflection area in the dense three-dimensional point cloud model; the method comprises the following steps: collecting a multi-angle reflection image of a pump machine metal shell by rotating a linear polarizer, calculating a Stokes vector to extract a diffuse reflection component, carrying out diffuse reflection component constraint and brightness suppression on a high-reflection area based on a CIE-Lab color space, and outputting a dense three-dimensional point cloud model after texture enhancement; and the size detection precision of the pump machine metal shell is improved.

The invention relates to the technical field of discharge detection, in particular to a high-precision detection method and device for partial discharge of totally-enclosed GIS equipment. The method comprises the following steps: carrying out metal shell three-dimensional structure modeling on the GIS equipment, and carrying out electromagnetic shielding evaluation so as to obtain a multi-point electromagnetic shielding evaluation value; acquiring an original discharge signal of each sampling point based on the electromagnetic wave sensor, and performing interference suppression processing and back propagation attenuation compensation according to a multi-point electromagnetic shielding evaluation value, so as to obtain an attenuation compensation discharge signal waveform; micro-vibration response parameters are collected based on an MEMS micro-vibration sensor, actual influence waveform point detection marking and physical vibration interference filtering are carried out on attenuation compensation discharge signal waveforms, and therefore pure optimized discharge signal waveforms are obtained. According to the invention, through efficient and accurate partial discharge detection, real-time early warning of the state of the GIS equipment is realized, and the stability and safety of the equipment are improved.

The embodiment of the invention provides a phase shifter, an antenna and a communication base station, relates to the technical field of communication, and aims to solve the problems of large transmission loss and large size of the phase shifter. The phase shifter comprises a bearing plate, a metal shell, a fixed medium, a sliding medium and a metal feed sheet. Wherein the bearing plate comprises a first metal layer arranged on one side; the metal shell is fixedly attached to the surface of the first metal layer and electrically connected with the first metal layer. The fixed medium is fixedly installed in the metal shell, and the metal shell and the fixed medium define a sliding cavity. The relative dielectric constant of the fixed medium is greater than 1. The sliding medium is arranged in the sliding cavity, and the sliding medium located in the sliding cavity can slide relative to the fixed medium; the sliding medium is provided with a sliding groove with an opening facing the fixed medium. The metal feed sheet is installed on the fixed medium and comprises a phase shift circuit extending into the chute. The phase shifter can be applied to an antenna and a communication base station.

The invention provides a semiconductor module packaging structure and a semiconductor module packaging method. The semiconductor module packaging structure comprises a first substrate, a second substrate and a metal shell, the first substrate comprises a first surface and a second surface which are opposite to each other, the second substrate comprises a third surface and a fourth surface which are opposite to each other, the fourth surface is recessed towards the third surface to form a groove, and the non-recessed part of the fourth surface is electrically connected with the first surface. The structure that the first substrate and the second substrate are directly interconnected replaces a traditional copper column interconnection structure, and the problems that in the prior art, a longitudinally-stacked semiconductor packaging structure is low in reliability, high in parasitic parameter and high in thermal resistance are solved.

The invention discloses a cable GIS terminal stress-strain sensor and a strain monitoring method thereof, and belongs to the technical field of stress-strain monitoring, and the sensor comprises a sensor structure unit which comprises a metal housing, a fixed contact, a movable contact and a piezoelectric element; the signal processing unit is integrated in the integrated circuit shell and comprises a charge collector used for converting a charge signal of the piezoelectric element into an analog voltage signal; the pulse charge discharger is connected to the output end of the charge collector in parallel; the analog-to-digital converter is connected with the output end of the charge collector and is used for converting the analog voltage signal into a digital signal; the serial communication interface is used for outputting digital signals after analog-to-digital conversion; the mounting unit comprises a fixing hole position and an adhesive base which are arranged on the metal shell; the cable GIS terminal stress strain monitoring device is used for monitoring the stress strain of the cable GIS terminal in the operation process so as to reflect typical structure defects appearing in the cable GIS terminal, and online monitoring of the cable GIS terminal equipment is achieved.

The invention relates to the technical field of drilling attitude measurement, in particular to a roadway drilling attitude measuring device and a using method. The provided roadway drilling attitude measuring device comprises a shell, the shell comprises a first shell and a second shell which are connected, the first shell comprises a transparent shell, and the second shell comprises a metal shell; the conical mirror is arranged in the first shell; the camera is arranged in the second shell, and the camera and the conical mirror are oppositely arranged; the data storage and transmission unit is arranged in the second shell, and the data storage and transmission unit is electrically connected with the camera; the measuring unit is arranged in the second shell, and the measuring unit is electrically connected with the data storage and transmission unit. According to the method and the device, the problem that the current drilling attitude measurement is relatively large in error or cannot meet the requirements of rapid feedback and accurate application of data can be solved, and the drilling quality and attitude can be measured in real time and at high precision.

To provide a lighting device capable of excellently radiating heat from a driver while excellently illuminating an object, and a display device equipped with the same.SOLUTION: The lighting device 2 includes a circuit substrate 5 having a front surface on which a plurality of light sources 5a are mounted and a rear surface on which a driver 5b for driving one or more light sources 5a among the plurality of light sources 5a is mounted, a lattice-shaped reflector 6 surrounding each of the plurality of light sources 5a, a metallic case 8 recessed rearward from a top surface 81 and having a recess 82 provided corresponding to the driver 5b, a first heat-conducting T1 in contact with the rear surface of the circuit substrate 5 and the top surface 81, and a second heat-conducting 5b in contact with the driver 82a and a bottom wall of the recess 82. T2. In the circuit substrate 5, a hole 5H through which the internal space Si of the recess 82 and the front space Sf of the circuit substrate 5 communicate with each other is formed at a position covered with the reflector 6.SELECTED DRAWING: Figure 5

1. Name of the Design Product: Upper Cover of the Metal Shell of the Automotive Subwoofer (K-ZZ10APR / 03). 2. Use of the Design Product: Used as the upper cover of the automotive audio shell. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo that Best Illustrates the Design Key Points: Perspective view.

The invention discloses an equipment electric leakage fault positioning method and system, and relates to the technical field of electric leakage detection, and the method comprises the steps: obtaining a plurality of pieces of electric leakage point location information of to-be-positioned equipment, screening each piece of electric leakage point location information based on a preset electric leakage threshold value, obtaining a plurality of pieces of candidate point location information, carrying out the electric leakage regionalization processing of each piece of candidate point location information, and obtaining a plurality of pieces of candidate point location information; the method comprises the steps of obtaining a to-be-positioned area corresponding to a to-be-positioned device and a plurality of reference electric leakage potential differences, performing electric leakage positioning on the to-be-positioned area by adopting each reference electric leakage potential difference to obtain a target area, and determining an electric leakage position corresponding to the to-be-positioned device according to the target area and a preset positioning function. The defects that in the prior art, whether electric leakage happens to the metal shell of the electrical equipment or not is judged mainly through a test pencil, only an approximate area of an electric leakage point can be determined, the specific position cannot be accurately determined, the electric leakage point is difficult to accurately position, and the operation reliability of the electrical equipment is reduced are overcome.

The utility model relates to a dustproof structure for a mining camera lens, which belongs to the technical field of mining cameras, and comprises a metal shell and a camera, wherein a dust cover is fixedly mounted on one side of the metal shell, and a lens hole is opened on the side of the metal shell where the dust cover is mounted. The dustproof structure for the mining camera lens is provided by arranging a dustproof shell on one side of the metal shell, arranging a dustproof assembly inside the dustproof shell, driving a fan to rotate through a motor, and conveying wind to the inside of the dust cover through an airflow pipe, so that an airflow blowing outward is formed inside the dust cover, preventing dust inside the mine from entering the dust cover, reducing dust attached to the lens, and reducing the cleaning frequency, thereby solving the problem that due to excessive dust contained in the air under the mine, more dust will be attached to the scraping strip after a long time of use, the longer the use time, the worse the cleaning effect, and the need to frequently clean the scraping strip.

The invention discloses a prefabricated branch fireproof cable with a copper metal shell and a preparation method of the prefabricated branch fireproof cable. The prefabricated branch fireproof cable comprises a copper metal main shell, the bottom of the copper metal main shell is communicated with a copper metal sub-shell, a main cable is installed in the copper metal main shell, and a branch cable is installed in the copper metal sub-shell; the main cable and the branch cable both adopt copper core conductors, and copper has high conductivity, so that resistance in a current transmission process can be reduced, electric energy loss can be reduced, electric energy transmission efficiency can be improved, and stable and efficient transmission of electric power to each electric device can be ensured; the nanoscale magnesium oxide insulation powder filled in the copper metal main shell and the copper metal branch shell has excellent insulation performance, can effectively isolate electrical connection between the main cable and the branch cable and the external environment and between the main cable and the branch cable and other conductors, prevents electric leakage and short circuit accidents, and improves the electrical safety of a cable system.

The invention discloses a high-voltage motor pagoda structure direct insulation automatic detection device, which comprises a background system, a pagoda structure detection device and a display device, and is characterized in that the background system is electrically connected with the pagoda structure detection device and the display device; the appearance of the pagoda structure detection device is a pagoda structure, the upper end of the pagoda structure is a high-voltage current-limiting resistor fixedly sealed by a silicone rubber umbrella skirt structure, and the lower end of the pagoda structure is a metal shell. A motor running state input module, a relay output module, a microprocessor, a DC2500 / 5000V boosting module, a high-voltage isolation relay, a current sampling module and an analog-to-digital conversion module are arranged in the metal shell; the motor operation state input module, the relay output module, the microprocessor, the DC2500 / 5000V boost module, the current sampling module, the analog-to-digital conversion module and the high-voltage isolation relay are connected in sequence, and the device can automatically complete insulation resistance detection before the high-voltage motor is put into operation, does not need manual terminal disassembly and assembly, shortens the detection time, and improves the detection accuracy.

An antenna system is configured for use with an electronic device having a housing. The antenna system includes a first antenna element configured to be disposed at a first location adjacent to a side of the housing and a second antenna element configured to be disposed at a second location adjacent to the side of the housing. The first antenna element includes a first body extending between a first lower end and a first upper end. The first body includes a first flat portion, a first arcuate portion, and a first cutout configured to facilitate dual-band radiation associated with the first antenna element. The second antenna element includes a second body extending between a second lower end and a second upper end. The second body includes a second flat portion, a second arcuate portion, and a second cutout configured to facilitate dual-band radiation associated with the second antenna element.

The utility model provides a water body sterilizer, which relates to the technical field of sterilizers and comprises a metal shell, a groove is arranged inside the metal shell, an ultraviolet lamp tube is inserted inside the metal shell, a glass cover is fixedly mounted inside the metal shell, and a water inlet pipe is fixedly mounted at the top end of the metal shell. Through the arrangement of the metal shell, the groove, the ultraviolet lamp tube, the glass cover, the water inlet pipe, the inserting groove, the filter screen, the rotating disc, the rotating groove, the rotating column and other structures, large-particle substances such as silt and suspended solids possibly existing in water can be filtered and sterilized through the filter screen, the particle silt in the water body can be filtered and sterilized, and the disinfection effect is prevented from being reduced; and meanwhile, by arranging an inserting block, a torsional spring and a rotating disc, the filter screen can be conveniently detached to be cleaned or replaced, the equipment maintenance cost is reduced, the final water supply quality and safety are prevented from being affected, and meanwhile the equipment convenience can be improved.

The invention discloses a three-in-one composite sensor and an equipment state monitoring method, and belongs to the technical field of sensors, the three-in-one composite sensor is used for monitoring the state of a bearing and comprises a metal shell, the metal shell is fixedly installed on an outer ring of the bearing, a cable is fixedly installed on the metal shell, and the cable is connected with the metal shell. A pair of temperature probes, a three-axis MEMS acceleration sensor and a piezoelectric ceramic impact pulse sensor are installed in the metal shell in an integrated mode. The three sensors are integrated in the metal shell to form a three-in-one composite sensor, so that the installation space and the installation complexity are remarkably reduced, and the problem of redundant structure of a traditional bearing monitoring system is solved; the early micron-sized damage of the bearing can be effectively identified by adopting the capturing sensitivity of the piezoelectric ceramic impact pulse sensor to a high-frequency impact signal and combining three-axis vibration analysis; through the symmetrically distributed temperature probes and a dynamic weighting algorithm, local heat source interference is eliminated, and the accuracy of temperature monitoring is improved.

The invention relates to the technical field of online monitoring, in particular to a monitoring data reconstruction method and system for an SF6 sensor, and the method specifically comprises the steps: collecting the mechanical vibration of a preset amplitude generated by a metal housing of SF6 gas insulation equipment; according to the real-time density monitoring signal, a required characteristic frequency band is screened and analyzed; determining a first resonant frequency of the metal shell; setting a rigidity detection mark in the characteristic frequency band according to the first resonant frequency; detecting a frequency shift relation between the rigidity change areas, and determining a rigidity abnormity score of the metal shell; determining a health score of the SF6 gas insulation equipment according to the stiffness anomaly score, the real-time density monitoring signal and the equipment sealing performance monitoring signal; reconstructing the monitoring signal according to the health score to generate correction density data; the problem that in the prior art, monitoring data hidden distortion caused by progressive failure due to sealing ring aging and installation loosening cannot be recognized is solved.

The utility model relates to a high-voltage measuring device for an electric power system of a motor train unit, in particular to a metal armored high-voltage voltage transformer for the motor train unit. Comprising an insulator and a coil device body sealed in the insulator, a primary high-voltage insulating sleeve is arranged on the top or the upper side portion of the insulator, and a primary high-voltage terminal and a shielding net surrounding the primary high-voltage terminal are arranged in the primary high-voltage insulating sleeve; a secondary terminal is arranged at the lower part of the insulator; a metal shell is arranged outside the insulator, and a semi-conductive layer is sprayed on the surface, located inside the metal shell, of the insulator. According to the utility model, the epoxy resin and the metal shell form a totally-enclosed dry-type structure, and the primary shielding lead is used in a matched manner, so that the problem of an original exposed high-voltage lead on the motor train unit is solved, the voltage condition can be monitored in real time, and the safety of the train in the running process is ensured; moreover, the system can adapt to a complex operation environment, and prevents the motor train unit from being affected by factors such as electromagnetic interference and temperature change in the operation process.

The invention discloses an ultrasonic double-wave detection and monitoring method and an ultrasonic double-wave transducer, and the ultrasonic double-wave transducer comprises a piezoelectric element which is used for exciting a longitudinal wave signal and a transverse wave signal at the same time under the excitation of a single electric pulse; the backing layer is positioned on the back surface of the piezoelectric element and is used for absorbing longitudinal wave energy radiated to the back surface by the piezoelectric element; the matching layer is arranged between the piezoelectric element and the tested workpiece and is used for acoustic impedance matching; the electrical connection device is used for connecting an external excitation generator and receiving equipment; and the metal shell is used for packaging the piezoelectric element, the backing layer, the matching layer and the electrical connection device and is provided with a structure for applying pre-tightening force. According to the invention, dual-mode excitation is realized through a single piezoelectric plate structure, and the efficiency, precision and reliability of dual-wave ultrasonic detection are improved.

The invention discloses a paper folding structure inductance type self-decoupling miniature six-dimensional force sensor, which belongs to the technical field of force sensors and comprises a base, a folding flexible circuit board, a metal shell, a communication cable, a coil inductance measuring circuit and an elastic body. The folding flexible circuit board comprises a coil array and an inductance measuring circuit, the coil array is folded on the upper surface and the four side faces of the base, the inductance measuring circuit is folded at the bottom of the base, and a communication cable is led out of the inductance measuring circuit. The metal shell is arranged above the base and surrounds the surface, except the bottom surface, of the folding flexible circuit board; an elastic body is arranged between the metal shell and the base. The elastomer converts six-dimensional force borne by the metal shell into six-dimensional displacement. According to the sensor, the characteristic that the eddy current effect is sensitive to normal displacement and insensitive to tangential displacement and rotation is utilized, self-decoupling measurement of six-dimensional displacement of the metal shell is achieved in combination with three-dimensional coil layout, and therefore self-decoupling six-dimensional force measurement is achieved, and the sensor can be integrated to the fingertip of the dexterous hand to provide endogenous tactile perception.

The invention discloses a vacuum cup with a metal shell and an inner container directly compounded and a preparation method. The vacuum cup comprises a metal shell, an inorganic non-metal inner container and a transition layer located at openings of the metal shell and the inorganic non-metal inner container. The transition layer is at least one of a metal transition layer, a metal solder transition layer or a glass solder transition layer, the thermal expansion coefficient of the transition layer is between the thermal expansion coefficient of the metal shell and the thermal expansion coefficient of the inner container, and the thermal expansion coefficient meets the metal shell gt; a transition layer gt; an inorganic nonmetal liner; when the transition layer is a metal transition layer, the relative difference K between the transition layer and the thermal expansion coefficient of the metal shell is less than 60%; when the transition layer is a metal solder or glass solder transition layer, K is less than 20%; the total thickness of the transition layer is smaller than 1 mm. By reasonably controlling the material and thermal expansion coefficient of the transition layer, a middle structure with a deformation inhibition function is formed, thermal expansion deformation of the metal shell is relieved, the welding stress is reduced, the cracking risk is reduced, and reliable and direct compounding of the metal shell and the inorganic nonmetal inner container is achieved.

The invention discloses a high-power inverter and a control method thereof, and belongs to the technical field of power electronics, the high-power inverter comprises a sensing enhanced magnetic assembly, the sensing enhanced magnetic assembly comprises a high-thermal-conductivity metal shell, a magnetic core arranged in the high-thermal-conductivity metal shell, a main power coil, a high-precision sensing coil and an integrated thermal probe; wherein the high-precision sensing coil is wound by clinging to a central column of the magnetic core, the main power coil is coaxially wound on the outer side of the high-precision sensing coil, and the magnetic core, the main power coil and the high-precision sensing coil jointly form an inductor core body. According to the invention, the controller can monitor the working point of the magnetic core on the magnetization curve in real time, so that the margin of the magnetic core away from the magnetic saturation state is directly judged.

The utility model relates to the field of mobile phone production equipment, in particular to an automatic feeding mechanism for mobile phone metal shell machining, which comprises a transplanting mechanism, an up-down cylinder and a clamping jaw mechanism, and the transplanting mechanism comprises a rack and a transplanting assembly arranged on the rack; the clamping jaw mechanism comprises an air jaw arranged on the up-down air cylinder, two sets of clamping blocks arranged on the air jaw and a blowing assembly which is arranged between the two sets of clamping blocks and is arranged in a rotatable mode. The air blowing assembly comprises a mounting seat arranged on the air claw, an air blowing unit rotationally mounted below the mounting seat, a plurality of groups of air outlets which are distributed in a circumferential array manner and face the clamping blocks, and a driving assembly which is in power connection with the air blowing unit and the air claw, and the air blowing unit is arranged between the two groups of clamping blocks; and the air blowing unit rotates, air blowing cleaning is conducted on the clamping face of the clamping block through the air outlet, then the clamping face of the clamping block is kept clean all the time, and then the clamping precision is improved.

An electronic device includes a display assembly including a transparent cover defining an external surface, a rear cover opposite the transparent cover, the rear cover including a metal radiator defining the external surface, a metal housing sidewall extending between the display assembly and the rear cover, the housing sidewall defining the external surface, a non-conductive split disposed between the metal housing sidewall and the metal radiator, the non-conductive split defining the external surface and electrically isolating the metal radiator from the metal housing sidewall, and an antenna assembly including the metal radiator configured to radiate relative to the metal housing sidewall.

The invention discloses an optical module printed circuit board and a preparation method thereof. The invention aims to solve the problem of heat dissipation of the optical module under high-speed transmission. The method comprises the specific steps of firstly pressing a multilayer circuit board with a six-layer structure, then drilling a via hole in the circuit board, and then plating a layer of metal copper in the via hole; the via hole comprises a stratum heat dissipation hole and a device mounting hole, and finally, the stratum heat dissipation via hole in a heating device area is filled with copper paste; and forming a circuit pattern on the circuit board filled with the copper paste in the modes of dry film pasting, exposure, development and etching, and the like. According to the invention, a printed circuit board laminated structure is constructed, a heating device is embedded, and heat is conducted to a ground metal shell through an embedded copper block and copper column heat dissipation mode, so that the heat dissipation problem of the optical module under high-speed transmission is solved.

The utility model discloses space junk capturing equipment, and belongs to the technical field of spaceflight. Comprising a metal shell and a controller installed on the metal shell, the metal shell serves as a containing cavity of a mechanical arm, a data collecting unit connected with the controller is arranged on the metal shell, and a mechanical arm fixing frame is installed in the metal shell; the mechanical arm is connected with the controller through the driving module, the fixed end of the mechanical arm is connected with the mechanical arm fixing frame, and the free end of the mechanical arm is stored in the metal shell or extends out of the metal shell in a telescopic and foldable mode. And a manipulator is mounted at the head of the free end of the mechanical arm and is used for capturing space junk fragments. According to the space junk capturing device, a mechanical arm and existing intelligent control are combined, space junk can be accurately captured, efficiency is high, and the defects that traditional capturing equipment cannot be stored, is prone to being lost, is difficult to fold and unfold, and is low in accuracy are overcome.

The invention provides an ultra-high-speed bus expansion electric connector with a shielding function, which comprises an insulating body provided with a lengthwise slot, a plurality of terminal slots are respectively arranged in lengthwise side walls on two sides of the slot, and a fool-proof part is arranged in the slot and is used for dividing the insulating body into a power supply and low-speed signal area and a high-speed signal area; the terminals comprise differential signal terminals distributed in the high-speed signal area and other terminals distributed in the high-speed signal area and the power supply and low-speed signal area, every two differential signal terminals are adjacent, and every two adjacent differential signal terminals and an insulating block inserted into the insulating body are formed in an embedded mode; the other terminals are independent terminals which are inserted into the corresponding terminal grooves of the insulating body; the metal shell is coated outside the insulating body, and a wave-absorbing material is arranged between the metal shell and the insulating body; the ultra-high-speed bus expansion electric connector with the shield can enable signal transmission to be better and more stable.

The utility model provides a faucet shell and a mould, the faucet shell comprises a metal outer shell and a plastic inner pipe body, the plastic inner pipe body is arranged in the metal outer shell, and the plastic inner pipe body is in close contact with the inner wall of the metal outer shell; the metal outer shell comprises a first metal outer pipe, one side of the first metal outer pipe is integrally connected with a second metal outer pipe, and the first metal outer pipe is communicated with the second metal outer pipe; the plastic inner pipe body comprises a first plastic inner pipe, one side of the first plastic inner pipe is integrally connected with a second plastic inner pipe, and the first plastic inner pipe is communicated with the second plastic inner pipe. According to the utility model, the overall stability is strong, and the overall texture and attractiveness are high; when water flows in the plastic inner pipe body, the water does not make contact with the metal outer pipe, the metal outer shell cannot be oxidized by the water, microelements cannot be released into the water, and the water pipe is green, environmentally friendly and long in service life. The plastic inner pipe can be prevented from sliding and loosening from the metal outer pipe.

A slot antenna device is disposed on a metal case and includes a slot, a first dielectric substrate, a feeding metal branch, a coupling metal branch, and a signal source. The slot is in the metal case and includes a first long side, a second long side, a first short side and a second short side. The first dielectric substrate is on the metal case adjacent to the first short side of the slot and located above the slot. The feeding metal branch is on the first dielectric substrate and above the slot. A first end of the coupling metal branch is connected to the metal case of the first long side, and a second end of the coupling metal branch extends along the first long side and toward the second short side. The signal source is electrically connected to the feeding metal branch and the metal case.

The utility model discloses a photoelectric detector, which comprises a shell, the shell is divided into an upper cavity and a lower cavity, wire passing holes are arranged among the upper cavity, a separation layer and the lower cavity, a power line passes through the wire passing holes in the upper cavity, a photodiode, a radio frequency output connector and an I / V conversion circuit board are arranged in the upper cavity, and the I / V conversion circuit board is arranged in the lower cavity. A power supply connector and a power supply board are arranged in the lower cavity, the power supply board and the I / V conversion circuit board are designed to be PCBs without wiring or placing components at the bottoms, a metal shell of the photodiode penetrates into the upper cavity to be in direct contact with the upper cavity and is connected with the ground, and one end of the photodiode and one end of the radio frequency output connector penetrate out of the upper cavity but are not located on the adjacent outer wall face of the upper cavity respectively. One end of the power interface connecting line is connected with the power connector, and the other end of the power interface connecting line is connected with the power panel. According to the photoelectric detector, the bandwidth index of the photoelectric detector can be optimized.

The utility model discloses a cooking utensil, and relates to the technical field of household appliances, the cooking utensil comprises a utensil body, a target ground wire in the utensil body is connected to a ground point of a pot body in the utensil body, and the target ground wire at least comprises a first ground wire connected with a metal shell in the utensil body; and the filtering device is arranged on the target ground wire so as to eliminate interference signals brought by a wireless temperature measurement module in the appliance body. According to the cooking utensil, the problem that the EMC effect of the cooking utensil in the related technology is poor is solved.