39results about How to "Break down technical barriers" patented technology

The invention discloses a multi-class industrial Ethernet bus integrated master station which comprises a core processor, a system bus interface module, n twin-port data storage devices, an interrupt signal processing module, n micro-processors, n network chips and n network interfaces. According to the multi-class industrial Ethernet bus integrated master station, in the same bus master station equipment, under the condition that no hardware is changed, integration of the multi-class industrial Ethernet bus master station functions can be achieved, and concurrent working of the multi-class industrial Ethernet bus master station functions is achieved, and thus in the same bus master station equipment, different industrial Ethernet bus master station equipment can access the bus master station equipment simultaneously, the different bus master station equipment can be compatible and work concurrently in a same set of system, and consequently technical barriers between different industrial Ethernet bus protocols are broken easily, the problem that various kinds of bus equipment can not be compatible is solved, the extensibility of the sub system is improved, and the configuration requirements of diversification and interchangeability of bus system users are satisfied.

The invention provides a method for controlling information interaction between the websites. The method comprises the following steps: providing a control module for a client; at the time of accessing the first webpage of a first website by a client browser, searching the control module in the client locally by the first webpage and loading the control module in a memory; detecting when a presettrigger event happens in the first website page, collecting and recording user parameters of the first website page, and then transmitting to the control module, wherein the user parameters comprise an access parameter and a user data parameter; and receiving the user parameters by the control module, opening a user interface containing browser controls, controlling the browser controls to accessthe corresponding website address of a second webpage of a second website according to the access parameter, and displaying the user data corresponding to the user data parameter in the user interface. The method provided by the invention can effectively solve the problem of information interaction between the websites.

The invention discloses a device and a method for transferring a two-dimensional layered semiconductor material to a diamond anvil cell, and belongs to the technical field of high-pressure devices. The device structurally comprises an optical microscope (9), a sample platform (4), a three-dimensional translation platform (5), an extension arm (6), a silo (7) and a glass piece (8). By adopting the device and the method, the two-dimensional layered semiconductor material can be transferred to the diamond anvil cell, the defects in the prior art that the property of a sample material can be affected as a substrate material is deformed can be avoided, and moreover the technical barrier of electric property measurement on a small amount of two-dimensional layered semiconductor materials under high voltage at present is broken through.

The invention provides a pasture manure production system based on planting and breeding combination. The system comprises an excrement collection unit, a manure pretreatment unit, a manure processing unit and a manure reusing unit, wherein the excrement collection unit is used for collecting excrement to an excrement collection pit, the manure pretreatment unit utilizes a solid-liquid separation machine to perform solid-liquid separation on the excrement in the excrement collection pit to obtain a solid part and a liquid part, the excrement processing unit can manufacture the solid part into solid organic fertilizer or cattle bed padding and liquid part into liquid organic fertilizer through anaerobic fermentation, and the manure reusing unit can spread and scatter the cattle bed padding and the solid organic fertilizer in a cowhouse and / or apply the residual solid organic fertilizer and the liquid organic fertilizer to a matched planting region, or the residual solid organic fertilizer and the liquid organic fertilizer can be sold. The pasture manure production system disclosed by the invention based on the planting and breeding combination reduces investment and emission of breeding industry, solves the problem of environmental pollution in a traditional fecaluria collecting, processing and using process of a pasture, brings manure benefit for the pasture and has good economic benefit and ecological benefit.

The invention provides a preparation method of a standard sample composed of more than ten elements (As, Se, P and the like) and multiple phthalates in polyvinyl chloride (PVC). The method comprises the following steps: preparing a high-concentration master batch of which the concentration is several times of that of the standard sample, and mixing the high-concentration master batch with blank PVC to prepare the standard sample. In the high-concentration master batch preparation process and standard sample preparation process, two granulation processes are respectively performed. The target elements comprise Pb, Cd, Hg, Cr, Sb, Ba, Mg, Cu, Se and P. The phthalate substances comprise one or more of DBP (dibutyl phthalate), BBP (butyl benzyl phthalate), DEHP (di-2-ethylhexyl phthalate), DNOP (di-n-octyl phthalate), DIDP (diisodecyl phthalate) and DINP (diisononyl phthalate). The method can be used for obtaining the satisfactory standard sample, and the prepared sample has the advantages of high uniformity and favorable reproducibility.

The invention provides a method for preparing a functional sugar-producing probiotic starter. The prepared starter has excellent performances such as acid production, stickiness production, aroma production and anti-phage pollution, and is suitable for use as an industrial starter. The method for preparing the functional sugar-producing probiotic starter comprises the steps of: using lactobacillus gasseri, lactobacillus reuteri or lactobacillus plantarum as fermentative strains, inoculating the fermentative strains into a proliferative medium and feeding by stages to add a carbon source, carrying out anaerobic fermentation culture at a temperature of 35 to 40 DEG C for 8 to 16 hours, then obtaining lactic acid bacterium cells by centrifugation under sterile conditions, mixing the lactic acid bacterium cells with a lyophilized protective agent and pre-freezing at a temperature of 45 to 55 DEG C for 1 to 3h, and then freeze-drying to obtain solid bacterial powder as the starter.

The present invention provides a printed circuit board processing method, which includes the following steps: S1, laser cutting: using laser to cut out a circuit needed on the copper foil which is pasted on the carrier; S2, preferential viscosity processing: carrying out preferential viscosity processing to the copper foil and the carrier; S3, preferential adsorption: carrying out preferential adsorption to the cut copper foil corresponding to the non-circuit part; S4, peeling: peeling the non-circuit part of copper foil off the carrier to obtain the copper foil corresponding to the circuit part attached to the carrier; S5, preparation of the printed circuit board, transferring the copper foil of the circuit part on the carrier to the baseboard to obtain the printed circuit board. It is possible to use laser cutting to cut the printed circuit board, avoid chemical milling in the manufacture process, and directly recycle the waste copper, is of great value of environmental protection while reducing the cost, and a new thought for preparing printed circuit board with copper foil is provided.

The invention provides a preparation method of a printed circuit board. The method includes the following steps of: S1, copper foil arrangement: copper foil is arranged on a carrier in a manner that the copper foil is aligned with the carrier, and the copper foil and the carrier are composited; S2, laser cutting: laser cutting is performed on the pattern of the circuit diagram of a circuit board;S3, selective peeling: an aluminum substrate is coated with photoresist, and a mask with a circuit diagram is arranged on the aluminum substrate, and the aluminum substrate is selectively exposed according to the pattern of the circuit diagram, so that the non-circuit portion of the circuit diagram loses viscosity; and S4, printed circuit board preparation: the copper foil arranged on the carrieris aligned with the aluminum substrate, so that the circuit diagrams of the copper foil and the aluminum substrate are completely overlapped with each other, and the copper foil of a circuit portion is completely bonded to the aluminum substrate, and the copper foil of a non-circuit portion is peeled off. According to the preparation method of the invention, the circuit board is inscribed by a laser cutting method, so that chemical etching can be avoided in a production process; and waste copper can be directly recycled, and therefore, a great environmental protection value can be realized with cost reduced. With the method adopted, a new idea is provided for the production of copper foil for circuit board.

The invention discloses a method for an IP terminal to acquire a DVB (Digital Video Broadcasting) standard digital television on-demand resource from a gateway, comprising the following steps: the IP terminal sends a request for connecting a DVB on-demand server; the gateway acquires address of the DVB standard on-demand server according to the request sent by the IP terminal and requests the DVB standard on-demand server for authentication; after passing through the authentication, the gateway and the DVB standard on-demand server are connected successfully, and the gateway sends an on-demand request command to the DVB standard on-demand server; the gateway acquires digital television on-demand source address information and sends the digital television on-demand resource to the IP terminal; and the IP terminal receives the digital television on-demand resource. The IP terminal directly acquires the digital television on-demand resource of a broadcast television network through the gateway, thus, utilization rate of the digital television on-demand resource of the broadcast television network is improved, and a problem that a digital television on-demand resource playing device is single and is not used fully is solved.

The embodiment of the invention provides a music synchronization method for different terminals. The method comprises the steps that a second terminal receives Bluetooth information sent by a music player of a first terminal in the music playing process; Obtaining character string information used for representing the music name and / or author information in the Bluetooth information; Analyzing thecharacter string information to obtain a corresponding music name and / or author information; And downloading corresponding music data based on the music name and / or author information to complete music synchronization. Based on the scheme, a user can locally generate the music playlist in the music playing process without any manual operation, so that seamless migration of the music playlist on other terminals is realized; Moreover, the technical barriers among the music players can be broken through, and playlists in the different music players are fused. The embodiment of the invention further provides terminal equipment and an automobile.

The invention discloses a bending device for a large induction furnace wall and a bending method. The bending device is formed by an upper forming assembly and a lower forming assembly. The bending method includes the steps of using a plurality of specifications of metal oblique blocks as pressing blocks, adjusting the height of each oblique block through an adjusting device to confirm radian and conicity of a whole stamping blank, transporting the blank through a material mover, and carrying out transverse displacement and adjusting on the position of the blank through a movable support trolley.

The invention discloses a quad-core DSP and 1553B bus controller integrated SIP encapsulated circuit. The SIP encapsulated circuit comprises a 1553B transceiver, a user I / O, a configuration PROM, an ADC, a bus drive, an FPGA, a JTAG bus, a FLASH, quad-core DSP, an EMIF bus and an SRAM, wherein the FPGA and the quad-core DSP are bidirectionally connected through the EMIF bus; the FPGA is connectedwith the quad-core DSP; the FLASH is bidirectionally connected with the FPGA and the quad-core DSP through the EMIF bus; the SRAM is bidirectionally connected with the FPGA and the quad-core DSP through the EMIF bus; the 1553B transceiver is bidirectionally connected with the FPGA; the configuration PROM is bidirectionally connected with the FPGA; the ADC is unidirectionally connected with the busdrive; and the FPGA is unidirectionally connected with the bus drive. According to the SIP encapsulated circuit, multiple element bare chips can be integrated in limited spaces, so that the volumes and weights of calculation controllers can be effectively decreased.

The invention discloses a rainbow trout all-female triploid large-scale seed production method, and belongs to the technical field of fish sex regulation and control and ploidy breeding. According to the method, a gynogenesis technology based on body color marking is developed, all-female germplasm is created in batches, then the all-female germplasm is induced into sex reversal male fish (pseudo-male fish) in batches through a sex control technology, all-female fertilized eggs are obtained through hybridization of the pseudo-male fish and common female fish, and the sex reversal male fish is obtained through pressure treatment. The pressure and the placing time of the fertilized eggs in the pressure device are limited, and finally the purpose of batch production of rainbow trout all-female triploids is achieved. The method effectively solves the problem of triploid offspring seed supply in the rainbow trout breeding industry, and provides a solution for localization substitution of imported triploid offspring seeds.

The invention discloses a stamping die applied to motor shell production and a machining method, and relates to the technical field of motor shell machining, the stamping die comprises an upper die and a lower die which are arranged up and down, a stamping area is formed between the upper die and the lower die, and a feeding port and a discharging port are formed in the stamping area; a first stamping head and a second stamping head are sequentially arranged on the upper die in the direction from the feeding port to the discharging port, the first stamping head is used for stamping a long-strip-shaped opening in a material, the second stamping head is used for stamping a step at the position close to the opening, a blanking groove is formed in the lower die, and the blanking groove is communicated with the discharging port. The blanking groove and the first punching head are oppositely arranged, the defects existing in the background technology are effectively overcome, the machining difficulty is greatly reduced, the cost is low, and the cost performance is high.

The invention discloses a method for implementing CIM (common information model) system development by combining BIM (building information modeling) and GIS (geographic information system) technologies. City-level standardized coding is applied in the design stage of a BIM model, data containing GIS information is coded into the BIM model, and model component set information is uploaded to various data storage interfaces on an online storage platform through a network in a data analysis mode when the BIM model is delivered. The information is stored in a database storage mode according to the unique identifier of the BIM model, GIS grid coordinates and other information in different regions and types, and meanwhile, a query service interface is provided for a GIS software system. The engineering data obtained by splitting is stored in a classified manner by using a database method, and can be provided for a third-party CIM system to carry out engineering visual presentation and data reutilization based on geographic position information, so that the technical barrier between the GIS and the BIM is broken through, and the technical threshold of the industry is reduced.

The invention discloses a bituminous mixture modifier and a preparation method thereof. The bituminous mixture modifier is prepared from waste polyethylene, waste polypropylene, a toughening agent, aninitiator, a modifier, an anti-ageing agent, filler and pigment. According to the bituminous mixture modifier and the preparation method thereof, by adopting modification technologies of blending, grafting, toughening and the like, the industrial, agricultural and domestic recovered waste PE and PP, the other modifier, the filler and the like are mixed evenly according to a certain ratio to prepare black solid particles, according to 0.3-0.5% of total mass of a bituminous mixture, the black solid particles, pitch and mineral aggregate are stirred and mixed evenly at a mixing station under technology conditions of certain temperature, mixing time and the like, thus paving can be conducted, the rut resistance capability of a bituminous pavement can be greatly improved, and meanwhile, both the moisture damage resistance performance and the low temperature resistance performance are obviously improved. By adopting the modification technologies, not only is the cost reduced, but also the high temperature stability of the bituminous mixture can be greatly improved, the foreign technology monopoly is broken, and the bituminous mixture modifier and the preparation method thereof have profound significance in the aspects of positively responding to national waste material resource recycling and the like.

The invention discloses a preparation method of a single-sided circuit board and a heat-conducting insulating adhesive film, which comprises the following steps: S1, cutting a circuit pattern on a copper foil; S2, coating a film on the metal substrate; S3, transferring the copper foil circuit pattern prepared in the S1 to the coated metal substrate prepared in the S2; and S4, after the transfer isfinished, carrying out hot baking treatment and finish curing to obtain the single-sided circuit board. According to the invention, the complex production procedures of the copper-clad plate are reduced, and meanwhile, the aluminum plate does not need to be oxidized, so that the environment is protected, the pain point of the industry is solved, and the environment protection of the industry is promoted. The preparation method of a single-sided circuit board and a heat-conducting insulating adhesive film avoids corrosion in an etching liquid, does not need chemical etching to form a circuit,is a pure physical method, has no chemical reagent and environmental pollution, and can recycle and reuse the copper foil after laser cutting, which saves the production cost, provides a healthy working environment for workers, and simultaneously provides a new production method for green development of the industry.

The invention discloses a powerful five-axis linkage milling head in the form of an AB pendulum, which includes a ram, an A-axis assembly, a B-axis assembly, and a spindle box. The bottom of the spindle box is equipped with a spindle. The A-axis clamping mechanism and the B-axis assembly include the B-axis slewing mechanism and the B-axis clamping mechanism. The A-axis slewing mechanism is used to drive the spindle box to swing left and right. The slewing mechanism is used to drive the spindle housing to swing back and forth, and the B-axis clamping mechanism is used to realize the B-axis clamping action. The AB pendulum type powerful five-axis linkage milling head of the present invention is a highly integrated system integrating mechanical, electrical and hydraulic technologies. It has a compact structure and has the advantages of large torque, high rigidity, and high precision. Processing equipment such as vertical machining centers and horizontal machining centers are especially suitable for the processing of titanium alloy parts in the aerospace field and the processing and friction welding of aluminum alloy parts in the high-speed rail field.

The invention discloses a stator assembly of an alternating-current power generator of an automobile, and relates to high-capacity stator assemblies with output power of 14 volts times 120-150 amperes. The stator assembly comprises a stator iron core, stator coils, insulation slots and slot wedges. Round copper enameled wires are wound to form the stator coils, the stator coils are embedded in slots of the stator iron core and are cushioned by the insulation slots, the slot wedges are tightly inserted in notches of the stator iron core, and the stator coils are fixed into the slots of the stator iron core by the aid of the slot wedges. The stator assembly is characterized in that silicon steel sheets with the thicknesses of 0.35 millimeter are overlaid and welded with one another to form the stator iron core; the outer diameter of the stator iron core ranges from 128 millimeters to 129 millimeters, the inner diameter of the stator iron core ranges from 99.5 millimeters to 100.5 millimeters, the thickness of the stator iron core ranges from 32 millimeters to 33 millimeters, the stator iron core is provided with the 48 slots and 48 teeth, the diameter of the bottom of each slot of the stator iron core ranges from 120.2 millimeters to 121.2 millimeters, and the width of each tooth of the stator iron core ranges from 2.4 millimeters to 2.6 millimeters; the stator iron core is manufactured by the aid of a single-group or double-group independent three-phase delta connection method. The stator assembly has the advantages that the high-capacity stator assembly is made of the round copper enameled wires instead of the original flat copper enameled wires and is used on power generators of NIPPONDENSO series automobiles, a process is simplified, equipment is simple, and the cost is lowered.

The invention discloses a TBM dual-blade center hobbing cutter and a tool. The center hobbing cutter comprises an end cover assembly and a hobbing cutter set assembled in the end cover assembly, the hobbing cutter set comprises two hobbing cutter bodies mounted in a spaced manner, and bearings assembled on the inner sides of the hobbing cutter bodies, the dual-blade center hobbing cutter further comprises a cutter shaft extending in the axial direction of the bearings and penetrating through the end cover assembly, the bearings are conical roller bearings, the mounting taper angle of conical rollers of the conical roller bearings relative to the axis of the cutter shaft is theta, the mounting taper angles of the conical rollers relative to the axis of the cutter shaft is theta and smallerthan 12 degrees, according to the TBM dual-blade center hobbing cutter and the tool, the mounting taper angles of the conical rollers of the conical roller bearings are reduced, the tool axial component force can be effectively reduced, compared with an imported bearing, the conical roller bearings are narrower, due to the fact that a bearing inner ring supporting base and the conical rollers arenarrower, the stress area is reduced, the pressure intensity is increased, under the heavy load pressure of normal work, a stable roller ring track is more easily formed, and the inclination to lose stability is not prone to happening.

The present invention provides a printed circuit board processing method, which includes the following steps: S1, laser cutting: using laser to cut out a circuit needed on the copper foil which is pasted on the carrier; S2, preferential viscosity processing: carrying out preferential viscosity processing to the copper foil and the carrier; S3, preferential adsorption: carrying out preferential adsorption to the cut copper foil corresponding to the non-circuit part; S4, peeling: peeling the non-circuit part of copper foil off the carrier to obtain the copper foil corresponding to the circuit part attached to the carrier; S5, preparation of the printed circuit board, transferring the copper foil of the circuit part on the carrier to the baseboard to obtain the printed circuit board. It is possible to use laser cutting to cut the printed circuit board, avoid chemical milling in the manufacture process, and directly recycle the waste copper, is of great value of environmental protection while reducing the cost, and a new thought for preparing printed circuit board with copper foil is provided.

The invention provides a multi-target tracking and behavior analysis method and system and a storage medium, and belongs to the technical field of target tracking. The method comprises the following steps: detecting a first target in a video image by adopting a pre-trained first target detection model; detecting a second target in the video image by adopting a pre-trained second target detection model; under the condition that one of the first target detection model and the second target detection model detects the corresponding first target or second target, generating a first target detection result; under the condition that the other one of the first target detection model and the second target detection model detects the corresponding first target or second target, generating a secondtarget detection result; extracting features of space-time interest points of the first target and the second target according to the first target detection result and the second target detection result; projecting space-time interest points; and intercepting a sequence of the spatio-temporal interest points according to a set time window so as to analyze behaviors of the first target or the second target.

The invention provides an electronic gear shifter and a car. The electronic gear shifter comprises a housing with a cavity structure, a main circuit board, a gear selecting arm, a gear shifting lever, a gear inducting module, a gear inducting structure, a gear shifting ball head and a control panel, wherein the main circuit board, the gear selecting arm, the gear shifting lever, the gear inducting module and the gear inducting structure are arranged in the housing; and the gear shifting ball head and the control panel are arranged outside the housing and are connected with the main circuit board. The electronic gear shifter provided by the invention is high in degree of automation, is relatively good in hand feeling, is simpler in structure and is lower in cost.

The invention provides a preparation method of a printed circuit board. The method includes the following steps of: S1, copper foil arrangement: copper foil is arranged on a carrier in a manner that the copper foil is aligned with the carrier, and the copper foil and the carrier are composited; S2, laser cutting: laser cutting is performed on the pattern of the circuit diagram of a circuit board;S3, selective peeling: an aluminum substrate is coated with photoresist, and a mask with a circuit diagram is arranged on the aluminum substrate, and the aluminum substrate is selectively exposed according to the pattern of the circuit diagram, so that the non-circuit portion of the circuit diagram loses viscosity; and S4, printed circuit board preparation: the copper foil arranged on the carrieris aligned with the aluminum substrate, so that the circuit diagrams of the copper foil and the aluminum substrate are completely overlapped with each other, and the copper foil of a circuit portion is completely bonded to the aluminum substrate, and the copper foil of a non-circuit portion is peeled off. According to the preparation method of the invention, the circuit board is inscribed by a laser cutting method, so that chemical etching can be avoided in a production process; and waste copper can be directly recycled, and therefore, a great environmental protection value can be realized with cost reduced. With the method adopted, a new idea is provided for the production of copper foil for circuit board.

The invention discloses a double-drive electrical plug-in hybrid power automobile. The automobile includes an engine, a transmission, a battery, an inverter, a driving control system, a transverse structural beam and two motors; the engine, the transmission, the battery, the inverter and the driving control system are installed in a cabin, the transverse structural beam is connected to a rear suspension, and the two motors are fixed to the two ends of the transverse structural beam respectively and connected with two rear wheels through two-section type driving shafts respectively; when the automobile stays in a starting state at a low speed, driving is completed by the two motors, and at that time, the two motors drive the two rear wheels through the two-section driving shafts respectively; when the speed reaches a set value, the driving control system emits a control instruction, driving is completed by the engine, and at that time, the engine directly drives two front wheels throughthe transmission. The automobile can fully utilize the advantages that the engine is high in rotation speed and capable of saving oil and the motor is low in rotation speed and capable of saving electric power, and therefore oil consumption can be substantially saved, and emission of the engine can be reduced; meanwhile, the automobile breaks the foreign technical barrier of driving systems, andreduces costs.

The invention discloses a universal-type water leakage detection alarm system, and the system comprises a group of I / O modules, a main PLC, a standby PLC, a protocol converter, and a repeater. The I / O modules are externally connected with a water leakage detection sensor, and can collect a switching quantity signal and an analog signal, convert the collected signals into other types of signals and output the signals to the protocol converter. The protocol converter carries out the protocol conversion of the signals, and outputs the signals to the main PLC and the standby PLC. The main and standby PLCs carries out the analysis processing of the signals, and then transmits the signals to the repeater. The repeater receives the signals, displays the water leakage information and transmits a sound and light alarm signal synchronously. The system is advantageous in that the system employs a distributed bus, and can be suitable for different types of water leakage detection sensors, and is practical for the water leakage detection of the ship's space; the system can achieve the fault diagnosis of each sensor line according to the data inputted by the water leakage detection sensor, and improves the stability; the system achieves the data synchronization of different types of PLCs through the process interaction of data at a conversion module, and improves the configuration flexibility.

The invention discloses a hard disk dismounting auxiliary device. The hard disk dismounting auxiliary device is characterized in that involute surface patches which are in the shapes of cantilevers are arranged on a rotary shaft in a sleeving mode, wherein the involute face patches which are axially arranged in a spaced mode and are positioned at the same central angles form an involute surface patch set; an axial spacing between the two involute surface patches in the same involute surface patch set is greater than a thickness of a hard disk and smaller than a spacing between two magnetic heads in one magnetic head set; the two involute surface patches in the same involute surface patch set can synchronously rotate along with the rotary shaft; by virtue of the involute surface patches, an arc-line side of a fan-shaped surface patch is set to be an involute side; and the rotary shaft is rotated, so that a pair of involute surface patches in the involute surface patch set, along the involute side, can be gradually switched to a position between the two magnetic heads in the same magnetic head set, and the two magnetic heads are synchronously lifted away the surface of the hard disk. The hard disk dismounting auxiliary device, which has very high requirements on a dismounting process of a computer hard disk and a magnetic head assembly, is used for maintaining the computer hard disk.

The invention discloses a device and a method for transferring a two-dimensional layered semiconductor material to a diamond anvil cell, and belongs to the technical field of high-pressure devices. The device structurally comprises an optical microscope (9), a sample platform (4), a three-dimensional translation platform (5), an extension arm (6), a silo (7) and a glass piece (8). By adopting the device and the method, the two-dimensional layered semiconductor material can be transferred to the diamond anvil cell, the defects in the prior art that the property of a sample material can be affected as a substrate material is deformed can be avoided, and moreover the technical barrier of electric property measurement on a small amount of two-dimensional layered semiconductor materials under high voltage at present is broken through.

The invention discloses a universal-type water leakage detection alarm system, and the system comprises a group of I / O modules, a main PLC, a standby PLC, a protocol converter, and a repeater. The I / O modules are externally connected with a water leakage detection sensor, and can collect a switching quantity signal and an analog signal, convert the collected signals into other types of signals and output the signals to the protocol converter. The protocol converter carries out the protocol conversion of the signals, and outputs the signals to the main PLC and the standby PLC. The main and standby PLCs carries out the analysis processing of the signals, and then transmits the signals to the repeater. The repeater receives the signals, displays the water leakage information and transmits a sound and light alarm signal synchronously. The system is advantageous in that the system employs a distributed bus, and can be suitable for different types of water leakage detection sensors, and is practical for the water leakage detection of the ship's space; the system can achieve the fault diagnosis of each sensor line according to the data inputted by the water leakage detection sensor, and improves the stability; the system achieves the data synchronization of different types of PLCs through the process interaction of data at a conversion module, and improves the configuration flexibility.

The invention provides a method for preparing more than ten kinds of elements such as As, Se and P in polyvinyl chloride and various standard samples of phthalates. The method comprises first preparing a high-concentration masterbatch whose concentration is several times that of a standard sample, and then mixing the high-concentration masterbatch with blank PVC to prepare a standard sample; during the preparation process of the high-concentration masterbatch and the preparation process of the standard sample , undergoing two granulation processes respectively; the target elements include Pb, Cd, Hg, Cr, Sb, Ba, Mg, Cu, Se and P; the phthalates include: DBP, BBP, DEHP One or more of , DNOP, DIDP or DINP. According to the method of the invention, standard samples meeting expectations can be obtained, and the sample preparation is very uniform and has good reproducibility.