114results about How to "Achieve direct connection" patented technology

The invention discloses a back-contact solar cell module. The back-contact solar cell module comprises a first cell, a second cell and a third cell which are connected in series and are adjacent, the back surface of each cell is provided with at least one group of back electrode array and at least one group of hole metal electrode array, the number of the back electrode array on each cell is equal to that of the hole metal electrode array, the electrode distribution structures of adjacent cells are the same, the hole metal electrode array of the first cell is directly connected with the back electrode array on the second cell which is adjacent to the first cell through a flow guidance piece in a broken line or curve way, and the hole metal electrode array of the second cell is directly connected with the back electrode array on the third cell which is adjacent to the second cell through the flow guidance piece in the broken line or curve way. According to the back-contact solar cell module disclosed by the invention, a confluence piece adopted by the traditional back-contact cell in interconnection is omitted, not only is a series welding step omitted and is the welding work amount greatly reduced, but also the electric performance and the total power of the back-contact solar cell module are increased, and the back-contact solar cell module has unexpected technical effect.

The invention provides a manufacture method for manufacturing a high-thermal-conductivity and single-sided aluminum substrate. The method comprises the steps of preparing a high-thermal-conductivity and single-sided aluminum substrate by using a conventional single-sided aluminum substrate; forming patterns on the outer layer of the high-thermal-conductivity and single-sided aluminum substrate; etching the high-thermal-conductivity and single-sided aluminum substrate after the patterns on the outer layer of the high-thermal-conductivity and single-sided aluminum substrate are well formed; and forming a circuit on the copper foil layer of the high-thermal-conductivity and single-sided aluminum substrate. According to the technical scheme of the manufacture method for manufacturing the high-thermal-conductivity and single-sided aluminum substrate, the depth-controlled hole drilling process is conducted and then holes are prepared as copper paste plugholes. In this way, an aluminum substrate is directly connected with the patterns of a circuit, so that the heat dissipation function is realized through a heat-conducting and insulating layer during the operation of elements welded on the patterns of the circuit. Meanwhile, the rapid heat dissipation function is realized through the connection of the copper paste plugholes with the aluminum substrate. Therefore, the thermal conductivity of the single-sided aluminum substrate is greatly improved, and the heat dissipation effect is effectively ensured.

The invention discloses a high-strength anti-collapsing petroleum casing column. The casing column comprises the following chemical elements in percentage by mass: 0.24-0.30 percent of C, 0.9-1.3 percent of Mn, 0.25-0.50 percent of Si, 0.9-1.3 percent of Cr, 0.6-0.8 percent of Mo, 0.06-0.10 percent of V, 0.01-0.03 percent of Al, 0.02-0.05 percent of Nb, 0-0.03 percent of Zr, less than 0.004 percent of B, less than 0.03 percent of Ti, less than 0.015 percent of P, less than 0.010 percent of S, 0.001-0.006 percent of Ca, and the balance of Fe and inevitable impurities, wherein Ca / S ratio is more than 1; the external diameter size Phi of the casing column is 141.3 mm to 142.7 mm; and the wall thickness of the casing column is 10.7 mm to 12.9 mm. Correspondingly, the invention further provides a manufacturing method of the casing column.

The invention provides an antenna system and a mobile terminal. The mobile terminal comprises a metal frame. The metal frame comprises two corners which are arranged diagonally, a long frame and a short frame, wherein the long frame and the short frame are connected to the two ends of the corners. The antenna system comprises four SIW horn antenna arrays formed on the metal frame. The circumference side of each corner is provided with two SIW horn antenna arrays which are vertical to each other. One SIW horn antenna array is arranged at one end of the long frame connected to the corner, wherein the end is close to the corner. Another SIW horn antenna array is arranged at one end of the short frame connected to the corner, wherein the end is close to the corner. The SIW horn antenna arrayscomprise a plurality of SIW horns. The positions of the metal frame, which correspond to the SIW horns, are provided with a plurality of through holes which are arranged at intervals. The total covering efficiency of the antenna system and the mobile terminal is good.

The invention discloses a preparation method of a diaphragm, electrode and current collector integrated structure as well as a preparation method of a battery. The preparation method of the integratedstructure comprises the following steps of S1.taking a diaphragm as a matrix and printing electrode slurry on the surface of the diaphragm through a printing technology or a printing technology in order to distribute the electrode slurry on the surface of the diaphragm in a patterned mode; S2.carrying out vacuum drying on the diaphragm obtained in the step S1 in order to solidify the electrode slurry on the surface of the diaphragm to form an electrode material distributed in the patterned mode; and S3.plating or depositing a conductive thin film on the whole surface of the electrode materialdistributed in the patterned mode as a current collector through a vacuum coating technology or a spraying deposition technology in order to obtain the integrated structure. The integrated structureprepared by the invention is applied to the battery, so that the cycling performance of the battery can be improved, and the energy density of the battery can be improved.

The invention discloses a shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device. The shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device comprises a shaft furnace discharge device, an electric arc furnace, a buffer weighing warehouse arranged at an outlet of the shaft furnace discharge device, and a small-dip angle conveying device which is arranged between an outlet of the buffer weighing warehouse and an inlet of the electric arc furnace and is used for conveying a material. The small-dip angle conveying device comprises a feeder, a small-dip angle conveying pipe, a movable elephant trunk and a fixed elephant trunk. The feeder and the small-dip angle conveying pipe are provided respectively with vibrating devices. The shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device overcomes defects of the existing device, reduces shaft furnace height, device production and maintenance costs, and a one-time investment, enlarges a shaft furnace-electric arc furnace distance range, and has a simple, compact, safe and reliable structure. The invention also discloses a control method of shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding. The method utilizes a sensor and a PLC controller to realize real-time monitoring and parameter adjustment, can be operated flexibly, has high safety and is suitable for continuous production.

The invention discloses an energy control method of a multi-port alternating-current and direct-current hybrid microgrid system. According to an alternating-current loop in the model, capacitor voltages in the modular multilevel converter, the dual-active full-bridge converter and the sub-modules and output currents on the alternating-current side are controlled through total energy control and alternating-current output current control; according to a direct-current loop in the model, the sum of the capacitor voltages of the upper bridge arm and the lower bridge arm of each phase is controlled through interphase energy control, and a direct-current component of circulation reference is obtained; the difference between the capacitor voltages of the sub-modules between the upper bridge armand the lower bridge arm in the same phase is balanced through inter-arm energy control, and a fundamental frequency alternating current component of circulation reference is obtained; direct currentand fundamental frequency alternating current components in the modular multilevel converter are tracked through a circulation controller, inherent frequency doubling current is suppressed, and capacitance energy in a bridge arm is adjusted; through phase-shifting carrier modulation, modulation signals of the sub-modules are adjusted, and capacitance and voltage balance of the sub-modules is achieved.

The present invention discloses a motor stator and a motor. The motor stator comprises: a stator core having a plurality of slots formed on a radial inner surface of the stator core and spaced apart by a predetermined slot pitch in a circumferential direction of the stator core; and a stator winding which is installed on the stator iron core. The stator winding is provided with Q pole pair numbercoils, and Q / the number of slots per pole per phase is equal to P, P being an integer; the stator winding has three phases, and the number of slots per pole per phase is 3; and the stator winding comprises a first coil assembly and a third coil assembly which are sequentially arranged in a sleeving mode from outside to inside. The adopted coil units are few in type and simple in arrangement mode,use of bus bars and busbars can be reduced, branches and neutral points of all phases of windings can be arranged on any layer of any groove, then the complexity degree of the manufacturing process isreduced, the production cost is reduced, and the machining efficiency is improved.

The invention provides a compact type fully hydraulic walking pile-up valve comprising a valve body. The valve body is internally provided with a high pressure selector valve formed by combining a threaded check valve base, a steel ball and a valve hole in the valve body. A first one-way throttle valve is arranged in the valve body and on the left side of the high pressure selector valve and a second one-way throttle valve is arranged in the valve body and on the right side of the high pressure selector valve. A balance valve is installed in a balance valve cavity of the valve body. A two-stage buffer overload valve comprising a first buffer overload valve and a second buffer overload valve is arranged on a main oil way in the valve body. A large-opening diameter oil supplementing valve formed by combining two sets of planar large-drift diameter check valves is installed in a valve cavity in the valve body and above the balance valve. An oil path switching valve is installed in the uppermost switching valve cavity of the valve body. The compact type fully hydraulic walking pile-up valve can effectively solve the problems such as great hydraulic shock, air suction of oil liquid and high noise in a braking process of fully hydraulic wheel excavators and loaders, has the advantages of compact structure, small size and high integration degree and is especially suitable for moving apparatuses.

The invention relates to a hydraulic transformer with axial flow distribution, belonging to the hydraulic technology field and solving the problems that the existing hydraulic transformer has large volume and complex structure. The hydraulic transformer comprises a cylinder body, a flow distribution plate, a pump shell, a flow distribution shell, a main flow distribution shaft, a bearing, a pin, an end cover and a control mechanism, the flow distribution plate and the main flow distribution shaft are connected by a pin, an electric hydraulic servo mechanism is used for controlling the rotation of the main flow distribution shaft, so as to control the rotating angle of the flow distribution plate and realize change of transformer ratio; a fan-shaped notch is arranged on the flow distribution plate, an oil path of the notch is directly communicated inside the pump shell, and a low-pressure return opening of the same pump is realized to be communicated to an oil tank, so as to realize direct connection of the fan-shaped notch and the oil tank; a waist-shaped groove with the same shape as the flow distribution plate and at the same position as the flow distribution plate is designed on the main flow distribution shaft, so as to realize communication of the oil path. The hydraulic transformer with axial flow distribution is used as the hydraulic pressure transformer.

The invention provides a motor winding and a motor stator. According to the motor winding, N first sectional type coil units and M second sectional type coil units are sequentially arranged in the circumferential direction, the first in-groove part and the second in-groove part of each first sectional type coil unit are distributed in two layers in the radial direction, and the first sectional type coil units are arranged on any layer of the motor winding in the radial direction; the third in-groove part and the fourth in-groove part of each second sectional type coil unit are distributed on the same layer in the radial direction, and the second sectional type coil units are arranged on the outermost layer and the innermost layer of the motor winding in the radial direction. According to the winding structure, a completely symmetrical structure is adopted in a magnetic circuit; the problem of circulating current generated by an asymmetric structure is eliminated, busbars among phases are canceled, direct connection among the phases is realized, branches and neutral points of windings of each phase are arranged on any layer of any groove, the complexity of a manufacturing process isreduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved.

The invention discloses a micro-modularized butane propulsion system structure and a propulsion method. The micro-modularized butane propulsion system structure comprises a module main body structure,an adding-discharging valve, a heating system and solenoid valves; the heating system is located in the center position of module main body structure and used for conducting state determining and heating on a propellant; the solenoid valves are arrayed on the upper portion of the module main body structure side by side and used for conducting on-off management on circulation of the propellant; and the adding-discharging valve is located in a groove in one side of the module main body structure and is structurally connected with the module main body structure through screws, and adding and discharging of the propellant are achieved through the adding-discharging valve. The micro-modularized butane propulsion system structure adopts the modularized design idea to highly integrate all singlemachines in a traditional propulsion system, different from the split-type distribution structures of the single machines in the traditional propulsion system, the micro-modularized butane propulsionsystem structure has the characteristics of high integration, small size, low weight, convenient installation, achieving rapid mass production, low cost and the like, and the requirement of a micro-nano satellite for the micro propulsion system can be met.

The invention discloses a floating bridge rolling on / off transportation system of an open coast. The floating bridge rolling on / off transportation system comprises a floating-type breakwater and at least one movable floating bridge which are constituted by a large-size floating platform, wherein the large-size floating platform comprises a locating system, the locating system locates the large-size floating platform to a predetermined near-coast sea area, the stopping and subduction effect of waves by the large-size floating platform is utilized, the amplitude of the waves can be greatly reduced, and a near-coast wave shielding area is formed between the large size floating platform and the coast; a movable floating bridge is erected in the shielding area, one end of the movable floating bridge is connected with the large-size floating platform, and the other end of the movable floating bridge is connected with the coast. The movable floating bridge can be carried by the large-size floating platform, and is convenient and quick to erect. The large-size floating platform is utilized to serve as the floating breakwater, and the problem that a conventional floating bridge cannot be erected under a wave environment of an open beach is solved. The large-size floating platform has a large bearing and delivering capability itself, after the large-size floating platform is connected with the floating bridge, an emergency loading and unloading channel between the large-size floating platform and the cost can be quickly achieved under a wild costal environment, and the practical value is huge.

The embodiment of the invention discloses a packaging structure and a packaging method of a cascaded GaN-based power device. According to the packaging structure, an HEMT chip, an MOSFET chip, a frame base island and a conductive connection structure are packaged in a plastic packaging material; the first side surface of the frame base island is provided with a groove, and the conductive connection structure is fixed in the groove and is insulated from the frame base island. The MOSFET chip is inversely arranged on the first side surface of the frame base island, a grid electrode of the MOSFET chip is electrically connected with the conductive connection structure, and a source electrode of the MOSFET chip is electrically connected with a non-groove area of the first side surface; the HEMT chip is arranged on the first side surface of the frame base island, and the source electrode of the HEMT chip is electrically connected with the drain electrode of the MOSFET chip through a lead. The grid electrode is electrically connected with the frame base island through a lead. According to the embodiment of the invention, the heat dissipation performance and reliability of the chip are improved, meanwhile, the parasitic inductive reactance is reduced, and the switching performance and the energy efficiency are improved.

The invention relates to a process for processing sand outlets of an engine cylinder, aiming to solve the problems that the prior process for processing the sand outlets of the engine cylinder is complex, the production cycle is long and the coaxiality of the rough processing hole and the fine processing hole is not consistent so that the fine boring hole has a black skin and poor roughness. The process comprises the following steps: (1) enlarging the front sand outlet and the rear sand outlet in a semi-finishing way by controlling the cutting speed of a lathe at 200-300m / min, the feeding amount at 0.3-0.4mm / r, the Ra at 6.3 and the cutting depth at 2.4-2.6mm; and (2) hinging the front sand outlet and the rear sand outlet by controlling the cutting speed of the lathe at 200-300m / min, the feeding amount at 0.3-0.4mm / r, the Ra at 2.5 and the cutting depth at 0.30-0.32mm until the sand outlets are processed to have the required apertures. The process for processing the sand outlets of the engine cylinder is simple and easy to operate, has short processing cycle and can ensure all the processing procedures can be finished on the same processing lathe, the production cost is low, the hole has no black skin and the roughness of the hole meets the requirements.

The invention belongs to the technical field of novel heat preservation walls. The invention provides a thermal insulation module connecting piece and a thermal insulation integrated structure. The connecting piece comprises a connecting sleeve, a positioning plate is arranged at one end of the connecting sleeve; a notch for fixing a steel wire mesh is formed in the positioning plate; connecting discs sleeve the outer side of the connecting sleeve; a through hole for accepting the connecting sleeve to penetrate through is formed in the middle of each connecting disc; the number of the connecting discs is two, reinforcing holes are formed in the connecting sleeve in the circumferential direction; reinforcing ribs penetrate through the reinforcing holes. The connecting piece also includes amain body reinforcing steel bar, a bearing layer is poured on the main reinforcing steel bar; a thermal insulation layer is arranged on one side of the bearing layer; a protective layer is arranged onone side of the insulating layer away from the bearing layer; and a steel wire mesh is arranged in the protection layer, a steel wire mesh is arranged in the notch, a thermal insulation layer is clamped between the two connecting discs, and the sides, away from the steel wire mesh, of the reinforcing ribs are fixedly connected with the main body steel bar, so that the technical problem that in the prior art, a protection layer in a thermal insulation structure employing a split connecting bridge structure is prone to falling off is solved.

The invention provides a household electrical appliance control method, an intelligent terminal and a household electrical appliance, and relates to the technical field of intelligent household electrical appliances. The method comprises the following steps: entering a setting interface through a running program, and displaying an identifier of a router connected with the intelligent terminal; receiving a connection password of the router identifier input by a user, establishing communication connection with the household appliance through a communication module, and sending the connection password to the household appliance; and thus, the household electrical appliance being connected to the network identified by the router through the communication module. Therefore, the intelligent terminal can be connected with the router according to the router identifier connected with the intelligent terminal; after the user inputs the corresponding connection password, the household electricalappliance can be directly connected to the network with the same router identifier as the intelligent terminal, thereby realizing direct connection between the intelligent terminal and the household electrical appliance, simplifying the operation process of the household electrical appliance in the network distribution process, improving the network distribution success rate, and improving the user experience.

The invention provides a data communication method and device, and belongs to the technical field of communication. The method comprises the steps that the working frequency band of a first wireless communication module of at least two built-in wireless communication modules of second equipment is selected according to the frequency band supported by first equipment, each wireless communication module is a double-frequency wireless communication module, and the first wireless communication module works in an access point mode; the working frequency band of a second wireless communication module of at least two built-in wireless communication modules of the second equipment is selected according to the frequency band supported by routing equipment, and the second wireless communication module works in a site mode; data connection between the first wireless communication module and the second wireless communication module is established; and control data communication with the first equipment is performed through the first wireless communication module. Control delay can be reduced, and the communication quality can be enhanced by selecting the working frequency band of the built-in wireless communication modules of the second equipment.

The invention relates to the field of communication, and discloses a remote audio and video call method and device and an OTT platform. One embodiment of the invention comprises the following steps: when a call request of terminal equipment is received, acquiring identification information of the terminal equipment from the call request, identifying communication equipment bound with the terminalequipment according to the identification information, and sending a session invitation request for the communication equipment to a pre-constructed IP multimedia subsystem, and receiving a communication establishment message sent by the IP multimedia subsystem in response to the session invitation request, establishing an audio and video call channel between the terminal equipment and the communication equipment according to the communication establishment message, and executing an audio and video call between the terminal equipment and the communication equipment by using the audio and videocall channel. According to the invention, by establishing the audio and video call channel between the terminal equipment and the communication equipment, the problem that the communication equipmentcannot communicate with the terminal equipment when the communication equipment is not networked is solved.

The invention relates to the technical field of tunnel support, in particular to a lock foot technology of a soft rock large deformation tunnel steel frame. According to the lock-foot technology, the reliability of connection between anchor pipes and the steel frame is strengthened, and failure of a lock foot of the steel frame is avoided. The technical scheme adopted by the invention comprises the following steps that (1) model selection of the steel frame is conducted, specifically, a circular steel pipe concrete steel frame is selected as the model selection of the soft rock large deformation tunnel steel frame; (2) machining and manufacturing are conducted, specifically, according to the design driving angles and the design outer diameter of the lock foot anchor pipes and the mounting position corresponding to the circular steel pipe concrete steel frame, preformed holes are drilled in the corresponding position of the circular steel pipe concrete steel frame, the sizes and positions of the preformed holes are required to be accurate, trial mounting of the lock foot anchor pipes is carried out on the processing site to guarantee successful mounting of the lock foot anchor pipes; and (3) on the tunnel construction site, after the circular steel pipe concrete steel frame is erected or lengthened or dropped into the bottom, the steel frame lock foot is constructed timely.

The present invention discloses a motor stator and a motor. The motor stator comprises a stator iron core, wherein the stator iron core has a plurality of slots formed on a radial inner surface of thestator iron core and spaced apart by a predetermined slot pitch in a circumferential direction of the stator iron core; and stator windings, which are arranged on the stator iron core. The stator windings are three phases of stator windings, and the three phases of stator windings are sequentially connected in parallel in the circumferential direction of the stator iron core. Each phase of statorwinding comprises a first coil assembly, at least one second coil assembly and a third coil assembly which are sequentially arranged in a sleeving mode in the radial direction of the stator core. A completely-symmetrical structure is adopted on a magnetic circuit through a winding structure, so that the problem of circulating current generated by an asymmetric structure is eliminated; and each interphase busbar is canceled, so that direct connection in each phase is realized, branches and neutral points of each phase of winding are arranged on any layer of any groove, the complexity of a manufacturing process is reduced, the production cost is reduced, the material cost is reduced, and the processing efficiency is improved.

The invention provides a quasi dual junction grid field effect transistor and belongs to the field of the micro-electronic semiconductor technology. The quasi dual junction grid field effect transistor includes the source, drain region, isolation region, body, front grid and back grid. The front grid is the multi crystalline silicon and there is a layer of grid oxygen between the front grid and the channel region. The back grid is the adulterated single crystal of silicon and connects with the body directly to form the P-N junction. Compared with the traditional FinFET, the structure of the invention has two different types of control grids. The back grid (P-N junction gate) is used to exhaust the channel region and to restrain the leakance, while the front grid is used to make the inversion layer in the channel region and to produce great drive current. That the back grid and the front grid of the invention connect with each other directly increases the grid control power of the device greatly and dulls the restrain to the breadth of the isolation region.

The invention discloses a safety protection device for computer information. The device comprises a main table body, a protection table body and a host, an operation cabinet is installed in the main table body, and an auxiliary shell body is installed on the surface of one side of the main table body; a supporting leg is installed at the bottom of the auxiliary shell body, a storage cavity is formed in the auxiliary shell body, and a protection cavity is formed in the protection table body; a power button is installed on the surface of the host, an external network port is formed in the portion, below the power button, of the surface of the host, and a switching key is installed on the portion, below the external network port, of the surface of the host; an audible and visual alarm is installed on the portion, below the switching key, of the surface of the host, a reinforcing cover is installed on the top of the host, and a USB socket is formed in the reinforcing cover. By arranging aseries of structures, the device has quite high safety performance in the using process, information is sorted and stored, networking control is convenient, and the safety of computer information is ensured.

The invention discloses a method and a system for realizing rapid connection between a flat computer and a keyboard WIFI hot spot. The method comprises steps that when a keyboard is connected with flat computer hardware to trigger an interruption event, the identity verification information is sent between the keyboard and the flat computer in a single-direction mode or a mutual mode and is processed to verify whether the keyboard is matched with the flat computer; when the keyboard is matched with the flat computer, a command for acquiring the WIFI hot spot information of the keyboard is issued by the flat computer, the WIFI hot spot information of the keyboard is acquired to accomplish WIFI connection. According to the method, hardware hot swap connection is employed, matching between the equipment is accomplished through the hardware, triggering interruption is realized on the basis of the hardware, direct WIFI hot spot connection of the keyboard and the flat computer is realized on the software, the flat computer once plugged onto a corresponding keyboard can automatically acquire the present WIFI hot spot information of a keyboard system, so the WIFI hot spot of the keyboard can be automatically connected, a user has not need to input any information, and use experience of the user is improved.

The invention relates to an ultrasonic wave method filter membrane attached particulate matter re-flying method and device, and is applicable to the technical field of atmosphere particulate matter sampling and test. The device mainly comprises a liquid storage groove, a filter membrane clamp, a cleaning groove, a flow rate meter, a heating sheet, an atomization groove, a vibrator and an atomization sheet. Firstly, particulate matters attached onto a filter membrane soaked into the cleaning liquid are subjected to peeling, stirring and scattering through ultrasonic wave high-frequency oscillation; then, the ultrasonic wave spring fogging effect is used for changing the cleaning liquid with the particulate matters into liquid mist with the particulate matters; then, the heating sheet is used for vaporizing the liquid mist containing the particulate matters; finally, suspension and flying of the particulate matters can be realized. The method and the device have the advantages that the principle is simple; the operation is convenient; the re-flying of the particulate matters attached on the filter membrane can be fast and efficiently realized; the physical and chemical properties of the particulate matters cannot be influenced; the device can be directly connected into a particulate matter test instrument.

The invention discloses an optical module. The optical module comprises an upper shell, a lower shell, a circuit board, a lens assembly and a clamping jaw assembly, and the lens assembly is arranged at the end, close to an optical port of the optical module, of the circuit board; the clamping jaw assembly is arranged at the optical port of the optical module, one end of the clamping jaw assembly is directly connected with the lens assembly, and the other end of the clamping jaw assembly is connected with an external optical fiber; the clamping jaw assembly comprises a clamping jaw and a shielding plate connected with the clamping jaw, a first limiting piece is arranged on the lower shell, a second limiting piece is arranged on the clamping jaw, and the first limiting piece is embedded in the second limiting piece; and a first positioning piece is arranged in the first limiting piece, a second positioning piece is arranged on the side face, provided with the second limiting piece, of the clamping jaw, and the second positioning piece is inserted into the first positioning piece. According to the optical module, the lens assembly is arranged at the end, close to the optical port of the optical module, of the circuit board, direct connection between the external optical fiber and the lens assembly is achieved through the clamping jaw assembly fixed to the shells, an optical fiberribbon is not needed, space is saved to a certain degree, and further development of the optical module is facilitated.

The invention discloses a flexible circuit board used for high-frequency signal transmission. The flexible circuit board comprises an inner layer conductive circuit layer, a first conductive circuit layer, a second conductive circuit layer, a window, and an electronic element, wherein the inner layer conductive circuit layer comprises a signal transmission line; a first welding pad is defined at one end part of the signal transmission line; the first conductive circuit layer is formed on one side of the inner layer conductive circuit layer; the first conductive circuit layer comprises a conductive circuit; a second welding pad is defined on the conductive circuit; the projection of the second welding pad on the inner layer conductive circuit layer is staggered from the first welding pad of the signal transmission line; the second conductive circuit layer is formed on the other side of the inner layer conductive circuit layer; at least one part of the first welding pad is exposed out of the window; and the electrodes of the electronic element are electrically connected with the first welding pad and the second welding pad separately. The invention also relates to a manufacturing method for the flexible circuit board.

The invention provides an underway particulate matter detection system and method. The underway particulate matter detection system comprises an underway vehicle, a sampling pipe and a particulate matter collecting unit, wherein the sampling pipe penetrates through a top wall of the underway vehicle; the optical particulate matter detection system comprises a first imaging unit, a second imaging unit, an analysis module, a correction module and a memory, the analysis module obtains the calculated concentration C1 of particulate matters on a filter film according to imaging; the correction module obtains correction concentration C2=k.C1 according to the calculated concentration C1, wherein k is a correction coefficient; the memory stores the correction coefficient k; the beta-ray particulate matter detection device obtains the content C beta of particulate matters in the correction area on the filter film during correction; a calculation module obtains a new correction coefficient C0 according to the calculated concentration and the content C [beta] of the particulate matters, wherein the new correction coefficient C0 is the correction concentration of the particulate matters in the correction area, and the new correction coefficient is sent to the memory; and the control module replaces the correction coefficient in the memory with a new correction coefficient. The method has advantages of accurate detection and the like.

The invention discloses an optical module. The optical module comprises a circuit board, a light emitting chip, a light receiving chip, a lens assembly and a clamping jaw assembly, the lens assembly is arranged at the end, close to an optical port of the optical module, of the circuit board and covers the light emitting chip and the light receiving chip, one end of the clamping jaw assembly is connected with the lens assembly, and the other end of the clamping jaw assembly is connected with an external optical fiber; the clamping jaw assembly comprises a clamping jaw and a shielding plate, a first positioning piece is arranged on the clamping jaw, a second positioning piece and a third positioning piece are correspondingly arranged on the shielding plate and the lens assembly respectively,and the first positioning piece penetrates through the second positioning piece and is inserted into the third positioning piece; and the lens assembly comprises a lens assembly body and a lens assembly connecting part which are connected with each other, a light through groove is formed in the lens assembly connecting part, a light through hole is formed in the shielding plate, and light path connection of the lens assembly and the clamping jaw assembly is achieved through the light through hole and the light through groove. According to the optical module provided by the invention, transmission of internal optical signals does not need an optical fiber ribbon, so that space is saved to a certain extent, and further development of the optical module is facilitated.