994 results about "Electrolytic capacitor" patented technology

The invention belongs to the technical field of power electronics, and relates to an energy feedback high-power-factor air conditioner compressor driving system. Comprising a direct-current bus, a direct-current bus electrolytic capacitor, a motor driving circuit, a shutdown energy feedback circuit, a permanent magnet synchronous motor and a motor control module, wherein the two ends of the direct-current bus electrolytic capacitor are connected with the positive electrode and the negative electrode of the direct-current bus respectively; in the energy feedback control module for driving the combined switch device in the shutdown energy feedback circuit, the motor driving circuit and the shutdown energy feedback circuit, the second connecting end I of each phase of bridge arm is connected with the positive electrode of the direct-current bus, and the second connecting end II of each phase of bridge arm is connected with the negative electrode of the direct-current bus; the first connecting end of the phase bridge arm of the shutdown energy feedback circuit is connected with the phase power grid voltage through the phase filter inductor. The method can maintain the stability of the DC bus voltage, and reduces the influence of the power grid voltage fluctuation and the air conditioner compressor load fluctuation.

A method for producing a conductive polymer dispersion, the method comprising a step for adding an electric conductivity improving agent to a dispersion that contains a conjugated conductive polymer and a polyanion and dispersing the same, wherein the step is performed at a liquid temperature of 30°C or higher.

The invention discloses an electrolytic capacitor pin defect visual inspection device, and relates to the technical field of visual inspection devices. Through cooperation of the first electric telescopic rod, the material guide plate and the triangular plate, the conveying angle and position of the capacitor can be adjusted conveniently, and the flexibility of capacitor conveying path adjustment is improved; the analysis module carries out continuity judgment and length comparison on the gray blocks, the length edge of the capacitor in the image can be accurately recognized, even if part of stains exist or the gray blocks are not continuous due to uneven illumination, the complete length edge can be obtained through extension processing, edge recognition errors caused by local defects of the image are effectively avoided, and the image quality is improved. The position judgment precision of the capacitor is improved; by dynamically calculating the deviation angle and correspondingly adjusting the exposure time and gain, the detection device can automatically adapt to different skew states of the capacitor, manual intervention is not needed, and the automation degree of detection and the universality of the device are improved.

The invention discloses an electrolytic capacitor testing method and system, and particularly relates to the technical field of electrolytic capacitor testing, and the method comprises the steps: obtaining a time-frequency domain coupling waveform of electrolytic capacitor testing, and constructing an anti-interference reference feature library covering a process fluctuation interval based on a correlation function of an electrolyte dynamic impedance spectrum and an ultrasonic speed; based on a physical equation of electrolyte evaporation and polar plate corrosion, a topological structure updating rule of a graph neural network and a physically constrained graph topological structure are dynamically generated; the method comprises the following steps: extracting defect sensitive frequency band characteristics of a cross-modal signal through a differentiable frequency band selection network, extracting multi-scale fusion characteristics from a time-frequency domain coupling waveform based on the defect sensitive frequency band characteristics, inputting the multi-scale fusion characteristics into an edge keeping regularization layer, and adaptively adjusting reconstruction parameters according to the confidence coefficient of a defect gradient field so as to obtain an edge keeping regularization layer; and a three-dimensional defect form meeting the continuity constraint is generated, so that the problem of low detection precision of the internal defect of the electrolytic capacitor is solved.

The invention provides a grid-side current harmonic suppression method and device for a motor driving system without an electrolytic capacitor. The method comprises the following steps: determining first and second bus voltage harmonics based on bus voltage obtained by sampling and inverter switching frequency; correcting the bus voltage according to the first bus voltage harmonic wave and the second bus voltage harmonic wave so as to determine a reconstructed bus voltage; according to the second bus voltage harmonic, the reconstructed bus voltage, an inverter output three-phase duty ratio and a motor three-phase current, first and second network side current harmonic regulation and control voltages are determined based on a self-defined closed-loop controller; and adopting a motor alpha-axis correction voltage and a motor beta-axis correction voltage determined according to the first and second grid-side current harmonic regulation and control voltages to participate in motor SVPWM modulation to output the three-phase duty ratio of an inverter so as to suppress grid-side input current harmonics. According to the method and the device, factors such as motor operation conditions, bus voltage harmonic waves and digital control delay are comprehensively considered, the quality of grid-side input electric energy is improved, and disturbance to machine-side rotating speed and torque is reduced.

The invention discloses a filter press for producing electrolyte of a liquid electrolytic capacitor, which comprises a base, and a box body is fixedly mounted at the top of one side of the base. After solid-containing wastewater is subjected to filter pressing, solids are discharged through the opening of the filter cartridge, the moisture content of the discharged solids is detected through the moisture content tester, the controller controls the electric telescopic rod to push the cone to move according to the moisture content of the discharged solid waste, and the size of the opening of the filter cartridge is adjusted through the cone. The extrusion force on solid containing water in the filter cartridge is increased, the moisture content of the discharged solid is reduced, the solid enters the drying box after being discharged, meanwhile, the rotating shaft drives the crushing rollers on the two sides through the transmission mechanism to crush solid waste, powder is dried through the drying mechanism, and then the moisture content of the solid waste can be further reduced; compared with an existing filter press, the filter press for electrolyte production has the advantages that the water content in solid waste after filter pressing can be effectively reduced, and the solid-liquid separation effect is improved.

Provided are: an electrolytic capacitor in which a decrease in electrostatic capacity is suppressed even in a high-temperature environment; and a manufacturing method. An electrolytic capacitor comprises: a capacitor element having a positive electrode foil, a negative electrode foil, an electrolytic solution, and a solid electrolyte layer; a case that accommodates the capacitor element; and a sealing body for sealing the case. The sealing body has an elastic body containing an elastomer. The elastomer contains butyl rubber, and is contained in the elastic body at 31 wt% or more. The electrolytic solution contains glycerin in the amount of 40 wt% or more in the solvent of the electrolytic solution.

The invention provides a method for predicting the service life of an electrolytic capacitor, which comprises the following steps of: taking environment temperature, operation time and equivalent series resistance (ESR) which is calculated based on ripple voltage and ripple current and is subjected to temperature compensation as input data, and taking the residual service life RUL of the electrolytic capacitor as a label; according to the failure mechanism of the electrolytic capacitor, when the ESR is increased to two times of the initial value of the ESR, it is indicated that the electrolyte is obviously lost, the capacitor fails to form a failure threshold value, and based on the failure threshold value, the RUL corresponding to each time point in historical monitoring is reversely deduced in combination with operation time data; then, performing normalization processing on the multi-source heterogeneous data to eliminate dimensional differences, and constructing a standardized data set suitable for model training; training and evaluating the model to obtain a model with residual life prediction capability; according to the technical scheme, the problem that the capacitor core temperature and the online electrolytic capacitor capacitance value required by traditional electrolytic capacitor life prediction are difficult to obtain is solved, and the engineering problem of electrolytic capacitor life prediction is solved.

The utility model provides a short-circuit protection circuit for a Type-C interface, and belongs to the technical field of short-circuit protection circuits. Comprising an interface module, an overvoltage and electromagnetic protection circuit and a switching circuit, the interface module, the overvoltage and electromagnetic protection circuit and the switching circuit are connected in series on the same power line and grounding line, and a common circuit and a standby circuit are arranged in the switching circuit and are both connected with the power line. According to the utility model, through the cooperation of the resettable fuse, the double-pole double-throw relay and other elements, the circuit can be rapidly switched so as to ensure that the interface can continue to work normally without maintenance when a short-circuit fault occurs, and through the synergistic effect of the gas discharge tube, the first transient suppression diode, the second transient suppression diode, the electrolytic capacitor and other elements, the short-circuit fault of the interface can be effectively prevented. The problems of overvoltage and electromagnetic interference during short circuit can be effectively relieved.

A bidirectional AC / DC conversion module based on an IGBT discrete device comprises a capacitor filter plate, an IGBT plate and a bottom plate which are arranged in parallel and fixedly connected, distances are reserved between the capacitor filter plate and the IGBT plate and between the IGBT plate and the bottom plate, the capacitor filter plate is provided with a capacitor assembly, and the IGBT plate is provided with an IGBT module. Two groups of first filter capacitors in the capacitor assembly are respectively arranged at two opposite edges of the capacitor filter plate, so that the distance between the two groups of first filter capacitors is reduced, and heat dissipation is facilitated; all the electrolytic capacitors in the capacitor assembly are located in the middle of the capacitor filtering plate, the electrolytic capacitors are arranged at equal intervals, and heat dissipation air channels are reserved, so that heat dissipation is smooth, and normal operation of all devices is guaranteed.

A solid electrolytic capacitor includes: a capacitor element including an anode part and a cathode part; a substrate that supports the capacitor element; a sealing body that seals the capacitor element; a first external electrode electrically connected to the anode part; a second external electrode electrically connected to the cathode part; and an adhesive layer disposed between the capacitor element and a first surface of the substrate. At an interface between the first surface and the adhesive layer, a maximum height Rz1 of surface roughness of the first surface is 5 μm or more, and a maximum height Rz2 of surface roughness of the adhesive layer is 3 μm or more.

The invention provides an external assembled pin of an electrolytic capacitor, and relates to the technical field of electrical elements. A first groove and two sets of second grooves are formed in the base, first bases and second bases are installed in the two sets of second grooves and connected through bolts, rotating cylinders are installed between the first bases and the second bases through bearings, and bevel gears are fixed to the lower ends of the rotating cylinders. A processing ring is clamped among the three groups of clamping blocks, when a pin of a capacitor body is inserted into the processing ring, a first adjusting rod is rotated to enable the processing ring to rotate, the pin of the capacitor body is polished through the processing ring, an oxide layer on the pin of the capacitor body can be polished off, and the capacitor body is in good contact with a needle cylinder; after the pin of the capacitor body is inserted into the needle cylinder, the locking rod is inserted into the top cylinder, the first control rod is pulled upwards to enable the upper end of the top cylinder to clamp the locking rod, and the pin of the capacitor body is prevented from being separated from the needle cylinder.

The invention discloses an electrolytic capacitor pin defect detection device, and relates to the field of electrolytic capacitor pin detection.The electrolytic capacitor pin defect detection device comprises an equipment frame body, a conveying assembly is arranged in the equipment frame body, and the conveying assembly comprises a driving roller and a driven roller which are installed in the equipment frame body; the outer wall of the driving roller and the outer wall of the driven roller are each sleeved with a rotating roller and a chain wheel, a motor is arranged at one end of the driving roller, a chain is arranged on the outer wall of the chain wheel, the outer walls of the rotating rollers are sleeved with a conveying belt, and a stirring assembly is arranged on one side of the chain. The problem that the detection work efficiency is low when an existing resistor capacitor is detected is solved, the resistor capacitor is placed above the rolling wheels, the stirring assembly can correct the resistor capacitor, the pin of the resistor capacitor is in a horizontal state, and the detection efficiency of the resistor capacitor is improved. Whether the resistor and capacitor pins have flaws is judged by observing the universal meter, and the resistor and the capacitor do not need to be manually taken for detection, so that the working efficiency is improved.

The invention discloses a non-electrolytic capacitor permanent magnet motor control method and system based on a non-linear observer, and the method comprises the steps: introducing a gradient search mechanism based on a stator voltage equation of a permanent magnet synchronous motor under a static coordinate system, and constructing a flux linkage observer equation; acquiring a voltage component and a current component of the permanent magnet synchronous motor in a static coordinate system, and observing the flux linkage observer equation to obtain a real component of a flux linkage amplitude error in a rotating coordinate system; and designing an exponential reaching law adaptive law, introducing an exponential reaching law to dynamically adjust the gradient search gain, and combining the real component of the flux linkage amplitude error under the rotating coordinate system as feedback to obtain the rotor position of the permanent magnet synchronous motor. The estimated flux linkage error value is used as the feedback quantity, and the real position of the rotor of the permanent magnet synchronous motor can be quickly and accurately tracked. The non-electrolytic capacitor permanent magnet motor control method and system based on the non-linear observer can be widely applied to the technical field of permanent magnet motor control.

A power conversion device includes a power factor correction circuit includes: a power semiconductor having a heat radiation surface facing a first principal surface of a cooling plate, fixed to the first principal surface so as to exchange heat with the cooling plate, and electrically connected to a drive board; an electrolytic capacitor disposed on an opposite side of the power semiconductor from the cooling plate and a same side of the power semiconductor as the drive board, and electrically connected to the drive board; and a resin mold that is fixed to the first principal surface of the cooling plate, defines a position of the power semiconductor, and is interposed at least between the power semiconductor and the electrolytic capacitor. A second principal surface of the cooling plate is thermally connected to a housing when the power factor correction circuit module is fixed to the housing.

The invention discloses a life prediction method and system for an integrated gate commutated thyristor, and is applied to the technical field of integrated gate commutated thyristors, and the method comprises the steps: obtaining the rated working voltage, the rated working temperature and the rated ripple current of a to-be-detected integrated gate commutated thyristor; performing Gall distance processing on the obtained real-time capacitance capacity, real-time voltage data, real-time ripple current and real-time temperature data to obtain a to-be-trained data set; obtaining a voltage correction factor, a temperature correction factor and a current correction factor; inputting the voltage correction factor, the temperature correction factor and the current correction factor into an electrolytic capacitor life estimation relational expression to obtain an electrolytic capacitor life estimation value; and inputting the to-be-trained data set and the electrolytic capacitor life estimation value into the driving life prediction model for processing to obtain life prediction data. According to the method provided by the invention, the problem that the life prediction precision is limited in the prior art can be solved, so that the life of the integrated gate commutated thyristor can be accurately predicted.

There is provided a liquid discharge apparatus, in which a substrate unit having a first connector and a piezoelectric element, a reference voltage signal output circuit, an electrolytic capacitor, and a wiring substrate having a plurality of rigid members and a flexible member, the reference voltage signal output circuit has a first front surface and is provided on a first rigid member laminated on the first surface of the first region, the electrolytic capacitor has a second front surface and is provided on a second rigid member laminated on the first surface of the second region, the second connector is provided on a third rigid member laminated on the second surface of the second region, and the first rigid member and the second rigid member are positioned such that a normal direction of the first front surface and a normal direction of the second front surface intersect each other.

Provided are a negative electrode body that can suppress generation of hydrogen gas and an electrolytic capacitor that comprises the negative electrode body. A negative electrode body according to the present invention comprises: a negative electrode foil that comprises a valve action metal; and a carbon layer that includes a carbon material and is layered on the negative electrode foil. Analysis of the carbon material by x-ray photoelectron spectroscopy gives a peak P1 from C-O bonds on the O1s spectrum, a peak P2 from O-C=O bonds on the O1s spectrum, and a peak P3 from C=O bonds on the O1s spectrum. The ratio of the total value of the area ratio [COO] of peak P2 and the area ratio [C=O] of peak P3 to the area ratio [C-O] of peak P1 is ([COO]+[C=O]) / [C-O]<2.0.

A capacitor includes a capacitor element having a predetermined liquid preparation held between a pair of electrodes facing each other across a separator, a body case for housing the capacitor element, and a sealing member made of rubber for sealing seals the body case. A supplying portion is provided in contact with the sealing member to supply the liquid preparation held in the capacitor element to the sealing member. The liquid preparation has a lipid-soluble sealing member deterioration preventing agent dissolved in a lipophilic solvent. The sealing member deterioration preventing agent supplied by the supplying portion to the sealing member permeates the sealing member. The ratio by weight of the sealing member deterioration preventing agent in the sealing member to the sealing member is 0.1% by weight to 25% by weight.

The invention discloses an inverter bus ripple active suppression method and system. The method comprises the following steps: collecting bus voltage and current, and extracting a broadband ripple frequency spectrum; inputting the broadband ripple frequency spectrum and the operation data of the inverter into a physical degradation model, and predicting the service life state of the electrolytic capacitor; a dynamic frequency tolerance threshold matrix is constructed through the predicted service life state of the electrolytic capacitor, and a sensitive frequency band of the electrolytic capacitor is identified; threat degree evaluation is carried out on each sensitive frequency band, and a frequency-varying virtual impedance network used for inverting a compensation voltage reference instruction is constructed according to an evaluation result; and according to the generated compensation voltage reference instruction, an inverter power switch tube is driven to generate corresponding compensation voltage. The system is used for implementing the method. The beneficial effects of the invention are that the ripple suppression is converted into a dynamic complementation problem between the capacitance physical impedance degradation amount and the inverter virtual impedance compensation amount, and the reliability and economical efficiency of an inverter system are greatly improved.

An electrolytic capacitor includes a capacitor element that includes an anode part and a cathode part, an exterior body that seals the capacitor element, a first external electrode that is electrically connected to the anode part, and a second external electrode that is electrically connected to the cathode part. At least one of an end face of the anode part or an end face of the cathode part is exposed from the exterior body to be electrically connected to a corresponding one of the first external electrode or the second external electrode. The end face exposed from the exterior body is covered with an electroless Ni plating layer, and the electroless Ni plating layer is covered with an electroless Ag plating layer. The electroless Ag plating layer is covered with the corresponding one of the first external electrode or the second external electrode.

The invention relates to the technical field of capacitor shell production, in particular to small-batch multi-variety electrolytic capacitor aluminum shell production line cleaning equipment which comprises a cleaning device and a decontamination device transversely arranged at the discharging end of the cleaning device. The cleaning device comprises a net type conveying belt, a plurality of pairs of spraying pipes arranged above and below the net type conveying belt, and a visual inspection station arranged above the feeding end of the net type conveying belt. The decontamination device comprises a decontamination box, a feeding belt installed in the decontamination box and a feeding device arranged above the discharging end of the decontamination box. According to the aluminum shell cleaning device, the double cleaning links of a spraying structure and ultrasonic cleaning are adopted, and the unique climbing type feeding belt design is matched, so that the multi-stage cleaning process of firstly washing and then deeply cleaning the aluminum shell in a closed space is completed, and the technical effect of remarkably improving the cleaning efficiency and cleanliness in unit time is achieved; the product quality is ensured, and the yield increasing requirement is met.

The invention discloses a bending and shaping device for electrolytic capacitor pins, relates to the field of electrolytic capacitor machining, and solves the problem that an existing bending and shaping device is difficult to take materials. The bending and shaping device comprises a device base and a driving host, a machining base is installed at the top of the device base, and a placing plate is arranged at the top of the machining base; a lower die is arranged at the top of the machining base, a bending piece and a driving sliding frame are installed on the outer side of the driving main machine, a movable support is slidably installed on the outer side of the driving sliding frame, and an upper die is installed on the outer side of the movable support. The inner supporting mechanism is used for internally supporting and positioning the inner side of the capacitor and is mounted at the top of the placement plate; by means of the inner supporting mechanism, the capacitor of an annular structure can be arranged on the outer sides of the multiple inner supporting plates in a sleeving mode, the multiple inner supporting plates are made to be synchronously close to the inner side of the capacitor, inner supporting positioning of the capacitor is achieved, after bending machining is completed, the multiple inner supporting plates are made to be synchronously away from the capacitor, and therefore the effect of facilitating capacitor installation and material taking is achieved.

The application discloses a multi-port impedance optimization-based harmonic suppression method for a non-electrolytic capacitor permanent magnet synchronous motor driving system, and belongs to the technical field of motor control. The application is aimed at the problem that active damping control will cause the increase of machine-side harmonics when used for the network-side current harmonic suppression of a non-electrolytic capacitor motor system. The machine-side port impedance regulation voltage and the network-side port impedance regulation voltage are calculated. The entropy weight TOPSIS method is used to calculate the optimal angle of the machine-side and network-side port impedance regulation voltage, and the machine-side and network-side port impedance regulation voltage is synthesized into a cooperative voltage. The cooperative voltage is decomposed into a d-axis component and a q-axis component, and then is superimposed on the dq-axis voltage given value, so that the controlled dq-axis voltage given value is obtained. The regulated alpha-beta axis voltage given value is obtained through the inverse Park transformation link, and then the pulse control signal of the inverter is obtained through the SVPWM control, so that the machine-side and network-side harmonic suppression of the driving system is realized. The application is used for the cooperative suppression of machine-side and network-side harmonics.

The invention relates to the technical field of vehicle protection, in particular to a protection method and device for an electrolytic capacitor, a vehicle, a storage medium and a program product, and the method comprises the steps: responding to a slow charging instruction of the vehicle, and based on at least one of a first temperature of a vehicle-mounted charger, an environment temperature of the vehicle and a second temperature of a vehicle battery, starting the vehicle; determining a current temperature of the vehicle; inputting the current temperature into a pre-constructed slow start protection model to output target output power of the vehicle-mounted charger at the current temperature; and adjusting the actual output power of the vehicle-mounted charger according to the target output power until the vehicle-mounted charger is equal to a preset proportion of the target output power so as to complete starting protection of the electrolytic capacitor in the vehicle-mounted charger. Therefore, the technical problem that the electrolytic capacitor aluminum foil is easy to fail due to breakdown due to capacitance attenuation, impedance increase, poor ripple current resistance and leakage current increase of the electrolytic capacitor at a low temperature in the prior art is solved.

A solid electrolytic capacitor includes a laminate in which capacitor elements each including an anode foil, and cathode foils are laminated, an exterior resin covering the laminate and having a first end face on which a part of each anode foil is exposed and a second end face on which a part of each cathode foil is exposed, an anode external electrode electrically connected to each anode foil at the first end face, and a cathode external electrode electrically connected to each cathode foil at the second end face. A first average distance from an end point on the second end face to the respective cathode foils in the lamination direction on the mounting surface side of the exterior resin is smaller than a second average distance from the end point to the respective cathode foils in a region where the capacitor elements and the cathode foils overlap.

The invention discloses a single-stage AC-DC converter for a high-voltage pulse power supply and a modulation control method of the single-stage AC-DC converter, the single-stage AC-DC converter comprises an interleaved Boost circuit and a DC-DC converter, the primary side of a transformer in the DC-DC converter and the interleaved Boost circuit multiplex bridge arms of an AC full-bridge circuit, the secondary side of the transformer is connected with a clamping diode half-bridge three-level circuit, and the clamping diode half-bridge three-level circuit is connected with the DC-DC converter. The clamping diode half-bridge three-level circuit is connected in parallel with a voltage stabilizing capacitor; according to the interleaving Boost circuit adopted by the primary side, a two-stage medium-direct-current bus high-capacity electrolytic capacitor is canceled and replaced by a smaller filtering thin-film capacitor, so that the size of the converter is greatly reduced, and the power density of the converter is improved; and the secondary side adopts a clamping diode half-bridge three-level circuit structure, so that the voltage stress borne by the switching device is greatly reduced, and the switching device is more suitable for high-voltage and high-power occasions.

An electrolytic capacitor including-includes an anode body that is porous, an anode wire including a buried part buried in the anode body and a protrusion part protruding to an outside of the anode body, a dielectric layer disposed on a surface of the anode body, a cathode part covering at least a part of the dielectric layer, an anode terminal electrically connected to the anode wire, and a cathode terminal electrically connected to the cathode part. A corner defined by three sides of the anode body is chamfered by an intersecting surface intersecting each of the three sides, the three sides intersecting each other. The protrusion part is protruded from the intersecting surface and is connected to the anode terminal.

The utility model discloses a kind of drive circuits, belong to electric bicycle instrument technical field, specifically related to a kind of electric bicycle instrument drive circuit, comprising: conversion module, output filter and high voltage surge suppression module;Output filter and high voltage surge suppression module are connected with conversion module;Conversion module includes: MOS tube Q6, MOS tube Q9, resistance R20, resistance R19, resistance R18, triode Q5 and triode Q10;Output filter includes: inductance L2, electrolytic capacitor C15, electrolytic capacitor C14, capacitor C13;High voltage surge suppression module includes: transient voltage suppression diode D5;The utility model uses wide input voltage range, high-efficiency switching power supply, replaces traditional linear voltage stabilizer, and efficiency is higher, and heat is smaller, and tolerance to input voltage fluctuation is better, while increasing greater capacity input electrolytic capacitor, effectively absorb transient surge and fill transient voltage drop, in addition, TVS diode is used to suppress high voltage surge, and self-recovery fuse is used to prevent overcurrent.

The utility model discloses a DSP camera control circuit of golf simulation system detector, 40 feet, 59 feet, 65 feet, 68 feet, 87 feet, 77 feet, 66 feet, 67 feet of blackfin digital signal processor U2 respectively correspond to be connected with resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, 8 feet, 10 feet, 28 feet, 24 feet, 25 feet, 32 feet, 33 feet, 30 feet, 31 feet of CMOS image sensor U4 respectively correspond to be connected with resistance R12, resistance 13, resistance 14, resistance R15, resistance R16, resistance R17, resistance R10, resistance 11, resistance 19, the 23 feet of CMOS image sensor U4 is connected with CMOS logic chip U5, and the 5 feet of CMOS logic chip U5 connects electrolytic capacitor C2 and power supply end CAM3V3, and the resistance R18 is connected between the 1 foot and 3 feet of CMOS logic chip U5, and the 26 feet, 22 feet, 23 feet of CMOS image sensor U4 respectively correspond to be connected with resistance R20, resistance 21, resistance 22, and the resistance of the product plays current -limiting protection and impedance matching, and the protection circuit is prevented from being damaged.