38results about How to "Guaranteed functional stability" patented technology

The invention provides a health-care spandex fiber which is formed by combining a wrapper and a core part, wherein the section of the fiber is solid; the mass percentage of the core part accounts for 30-70% of that of the fiber and the mass percentage of the wrapper accounts for 30-70% of that of the fiber; and a preparation method of the health-care spandex fiber comprises the following steps of: 1, preparing a health-care spandex core part by utilizing a melt spinning technology according to a formula proportion; 2, preparing a health-care spandex fiber wrapper by utilizing a dry-method spinning technology according to the proportion; and 3, spinning by utilizing a special spinneret plate combined piece through a conventional dry-method spinning equipment process so as to obtain a health-care spandex. The health-care spandex disclosed by the invention has the effects of eliminating the peculiar smell, absorbing the moisture and proofing moulds, and inhibiting bacteria and expelling parasites; the health-care spandex can be contacted with a human body to remove the humidity and absorb the sweat so as to accelerate the blood circulation and the metabolism of the human body and relieve fatigues; and the health-care spandex also has the aroma of plant essences, and furthermore is good in utilization performance and can meet the requirements on homespun in processes of spinning, weaving, dyeing and finishing.

The embodiment of the invention discloses a phase change memory and a manufacturing method of the phase change memory. The phase change memory comprises a first conductive wire, a phase change memoryunit and a second conductive wire which are sequentially stacked from bottom to top, wherein the first conductive wire and the second conductive wire are parallel to the same plane and are perpendicular to each other; the phase change memory unit is perpendicular to the first conductive wire and the second conductive wire; and the phase change memory unit comprises a tunnel barrier layer, a firstelectrode layer, a gating layer, a second electrode layer, a phase change memory layer and a third electrode layer which are sequentially stacked from bottom to top, wherein the first electrode layeris used for blocking diffusion between the tunnel barrier layer and the gating layer; and the tunnel barrier layer has an on state and an off state, wherein the tunnel barrier layer in the on state isconductive, and the tunnel barrier layer in the off state is electrically insulated.

The invention discloses a method for effectively achieving host cluster resource scheduling under a cloud platform, belongs to the field of cloud platforms, and aims at solving the technical problem of how to reasonably utilize Iass layer physical resources to be large platforms. According to the technical scheme, the method comprises the following steps that 1, a cloud platform synchronously obtains metadata information of all physical resources of a corresponding Iass platform through an Iass platform interface, and the metadata information is saved to the platform side; 2, all the physical resources of the Iass platform are classified and labeled correspondingly, labels serve as the basis of resource scheduling, all resource application tasks initiated through the Iass platform are subjected to distribution through scheduling policies, and final resources are obtained; 3, after scheduling is completed through the scheduling policies, updating is conducted on the metadata of the platform side.

The invention relates to a spring-based hydraulic device and a method for suspending a riser string. The device comprises an upper disk of a cyclic structure, a lower disk of the same cyclic structure arranged oppositely to the upper disk, a plurality of telescopic pins evenly distributed along the inner edge of the upper disk, two or more than two high-pressure upright columns arranged between the upper disk and the lower disk, and two or more than two common upright columns arranged between the upper disk and the lower disk, wherein each high-pressure upright column comprises a hydraulic cylinder, the bottom end of the hydraulic cylinder is fastened to the top surface of the lower disk, a piston rod is inserted into the hydraulic cylinder, the top end of the piston rod is fastened to the bottom surface of the upper disk, and the upper and lower cavities of the hydraulic cylinder are full of a high-pressure liquid; each common upright column comprises an outer barrel, an inner barrel located inside the outer barrel, a piston arranged at the bottom end of the inner barrel, and a high-strength spring sleeving the outer barrel and the inner barrel, and wherein the bottom end of the outer barrel is fastened to the top surface of the lower disk, the top end of the inner barrel is fastened to the bottom surface of the upper disk, and the top end of the high-strength spring props against the bottom surface of the upper disk, while the bottom end of the high-strength spring props against the top surface of the lower disk.

The invention belongs to grippers, and particularly relates to a rigidity-improved connecting rod type clamping structure which comprises a palm, wherein one end of the palm is connected with a screw rod through a screw nut; the screw rod is connected with the external part and is controlled by an external device; the other end of the palm is connected with two outer fingers and an inner finger rod; the two outer fingers are parallel to the inner finger rod; the inner finger rod is arranged between the two outer fingers; when the screw rod rotates, the palm can convert the rotation of the screw rod to clamping or loosening of the two outer fingers, and can control the stretching or retraction of the inner finger rod; a locking connecting rod extension part is arranged at the front part of the inner finger rod; a locking connecting rod is arranged at the front end of the locking connecting rod extension part; and the two outer fingers are connected with the locking connecting rod through double connecting rods and a single connecting rod respectively. The rigidity-improved connecting rod type clamping structure has the benefits that the structure is simple and reliable, the space is compact, a plurality of groups of parallelogram connecting rod structures are placed in the narrow space, and the function stability of the integral clamping mechanism is guaranteed.

The invention relates to a power system 101 and 104 communication protocol processing system and a processing method thereof. The processing system comprises an interface layer, a kernel layer, a datalayer and an application layer. The interface layer is used for receiving the data packet of the external physical communication interface and correspondingly returning a response data packet according to the requirement group of the protocol format. The kernel layer is used for performing function body encapsulation of a unified interface on the content domains with the same data format in the 101 and 104 communication protocols. The data layer is used for transmission of an external data source, logic output control and support of parameters required by other layers. The application layer is used for analyzing and packaging the protocol content and carrying out state flow control according to a response mechanism of the protocol. The specific communication port type used by the protocolis not limited any more, external calling only pays attention to some specific interface functions, protocol processing kernel layer logic implementation is not involved, a protocol library is easy to construct, and the protocol library is convenient to transplant and expand to other single-chip microcomputer application systems for use.

The invention relates to a middle supporting structure of an automobile transmission shaft. The middle supporting structure comprises a strip-shaped supporting body and is characterized in that a left supporting bracket is arranged on the left portion of the supporting body, a right supporting bracket is arranged on the right portion of the supporting body, and the left supporting bracket and the right supporting bracket are the same in structure; the upper end of the left supporting bracket and the upper end of the right supporting bracket are respectively connected with a projection welding nut in a positioning mode. The middle supporting structure can effectively and reliably support the transmission shaft, guarantees stability and reliably of functions of the transmission shaft in a traveling process, and is simple in structure, low in weight, low in cost and easy to form.

The invention relates to the technical field of steam-generator rigid sludge cleaning, and particularly discloses a guide device for hydrodynamic cleaning of the lower surface of a first supporting plate of the secondary side of a steam generator. In the guide device, a guide rail is of a rectangular structure, wherein a groove track is formed in the upper end of the rectangular structure, and the front end of the right side of the guide rail forms a hook structure; a fixed seat is fixed to the lower portion of the rear end of the left side of the guide rail, and a threaded hole is formed in the fixed seat; a slide seat on the right side of the fixed seat is clamped in a section of slide groove of the lower portion of the guide rail; a long threaded rod sequentially penetrates through the slide seat and the fixed seat from the right side of the slide seat, and the end portion of the right side of the long threaded rod is compressed by utilizing a hook fixed on the slide seat; and through rotating the long threaded rod, the slide seat can be driven to move relative to the fixed seat along the guide rail. According to the guide device for hydrodynamic cleaning of the lower surface of the first supporting plate of the secondary side of the steam generator, a guide rail structure is adopted to conduct supporting and guiding on a gun barrel of a sludge cleaning gun, the rigidity and the functional stability of the gun barrel of the cleaning gun are guaranteed, the situation that offset cannot be generated in the stepping process of the sludge cleaning gun is ensured, a nozzle can be aimed at between-tube correctly, and the cleaning efficiency and the accuracy of the lower surface of the first supporting plate are enhanced.

The invention provides an intelligent helmet, a help seeking system using the intelligent helmet and a control method based on the intelligent helmet. The intelligent helmet comprises a helmet body and a help seeking device which are detachably connected; and a controller, a risk detection module and a communication module are arranged in the help seeking device, wherein the risk detection moduleand the communication module are in communication connection with the controller. A locking and releasing structure is arranged between the helmet body and the help seeking device; the locking and releasing structure is communication connection with the controller; and the controller controls the locking and releasing structure to be opened and closed so as to control the help seeking device to belocked or released. The control method of the intelligent helmet comprises the following steps of detecting the movement state of the intelligent helmet; according to the movement state, judging whether a user is in a dangerous situation or not; if yes, controlling the help seeking device to be separated from the helmet body and suspended in air; and sending information for help to a help seekingplatform. Through the technical scheme, the aim of effectively automatically asking for help through the intelligent helmet is achieved when a driver is in the dangerous situation in the driving process.

The embodiment of the invention provides an assembly loading method, an assembly loading device and a terminal, wherein the method can comprise the following steps of: determining a target assembly to be loaded for a target application according to the assembly demand information of the target application; obtaining realization information of the target assembly and at least two pieces of interface information of the target assembly; when the assembly loading operation of the target application is detected, checking the assembly loading operation according to the assembly demand information and at least two pieces of interface information of the target assembly; and loading the realization information of the target assembly into the target application after the checking succeeds. The assembly loading method, the assembly loading device and the terminal have the advantages that the assembly loading success rate can be effectively improved, and the function stability of the target application is ensured.

The invention belongs to the technical field of computers, and relates to an interface management method and device, a storage medium and electronic equipment. The method comprises the following steps: classifying and configuring expansion interfaces to determine a service interface, and extracting the service interface to obtain a to-be-configured file; performing service calling configuration and service implementation configuration on the to-be-configured file to obtain a calling configuration result and an implementation configuration result, and determining a target file in the to-be-configured file according to the calling configuration result and the implementation configuration result; and calling a service interface according to the target file to obtain service data returned by the service interface. When the business interface is expanded to realize calling, only the configuration of the business interface needs to be finely adjusted, the dependence of a core service interface does not need to be adjusted, and the application service is not influenced. Moreover, an interface basis is provided for a standard and stable core service product, adaptive and expanded work development and risks are migrated out of the core service, the function stability of the core service is ensured, and the project delivery efficiency is improved.

The invention discloses a layout method for a PCB (Printed Circuit Board) mounted with a BGA (Ball Grid Array) chip and a PCB prepared by applying the same and relates to the technical field of an electronic circuit. The layout method comprises the following steps: S1, providing a PCB to be mounted with the BGA chip, wherein the PCB is provided with welding spots corresponding to pins of the BGA chip; S2, confirming the positions of the welding spots on the PCB, which correspond to an NC (Not Component) pin and / or a function nonuse pin; S3, covering the welding spots corresponding to the NC pin and / or the function nonuse pin of the BGA chip with insulation ink; and S4, according to functional requirements, wiring or forming metalized through holes in a coverage region of the insulation ink. The invention solves the technical problem of high layout difficulty of the PCB mounted with the GBA chip in the prior art. According to the invention, the layout difficulty of the PCB mounted with the GBA chip is reduced to the greatest extent and development and processing periods of the PCB mounted with the GBA chip are shortened.

The invention relates to a bonding wire quality detection method. The invention belongs to the technical field of bonding wires. The method comprises a stability test and a reliability test. The the wire arc breaking frequency of bonding of a whole wire and the time required to be adjusted by shutdown are detected; the wire arc is subjected to a tension test and a hot and cold impact test, then the stability of the bonding process is controlled, bonding wires with low quality are removed, the bonding wires with guaranteed quality are screened out and fed back to the production of the bonding wires, the process is adjusted and improved in time, and it is guaranteed that the bonding wires have a stable working state under the action of mechanical force and the extreme environment.

The invention provides a health-care spandex fiber which is formed by combining a wrapper and a core part, wherein the section of the fiber is solid; the mass percentage of the core part accounts for 30-70% of that of the fiber and the mass percentage of the wrapper accounts for 30-70% of that of the fiber; and a preparation method of the health-care spandex fiber comprises the following steps of: 1, preparing a health-care spandex core part by utilizing a melt spinning technology according to a formula proportion; 2, preparing a health-care spandex fiber wrapper by utilizing a dry-method spinning technology according to the proportion; and 3, spinning by utilizing a special spinneret plate combined piece through a conventional dry-method spinning equipment process so as to obtain a health-care spandex. The health-care spandex disclosed by the invention has the effects of eliminating the peculiar smell, absorbing the moisture and proofing moulds, and inhibiting bacteria and expelling parasites; the health-care spandex can be contacted with a human body to remove the humidity and absorb the sweat so as to accelerate the blood circulation and the metabolism of the human body and relieve fatigues; and the health-care spandex also has the aroma of plant essences, and furthermore is good in utilization performance and can meet the requirements on homespun in processes of spinning, weaving, dyeing and finishing.

The invention provides an application program authority judgment method and device and an electronic device, wherein the method comprises the steps of receiving a floating window setting request of an application program; acquiring a current system version of a terminal device; if the current system version is a preset first system version, calling a first preset function to judge whether the application program has a floating window setting authority or not; and if the first preset function is called to judge that the application program has the floating window setting authority, and generating a floating window corresponding to the application program, so that by judging the current system version, when the current system version is a preset first system version, judging whether the application program authorizes the floating window setting authority or not by calling a correlation function, and generating the floating window corresponding to the application program when the application program has the floating window setting authority, whether the application program grants the floating window authority in the terminal device or not can be accurately and comprehensively judged, and the functional stability of the application program in use is ensured.

The invention relates to a hanging device for water isolating pipes and a hanging method thereof. The hanging device is characterized by comprising a shell type bracket provided with a through hole in a bottom end, a hollow hanging chuck coaxially and tightly connected to the upper end of the bracket, a plurality of hydraulic cylinders evenly hinged to the lower surface of the hanging chuck, a second hanging chuck hinged to piston connecting rods of the hydraulic cylinders and having the same structure with the hanging chuck, and a water isolating pipe string hinged on the hanging chuck and / or the second hanging chuck, wherein a plurality of pins extending in the radial direction are evenly distributed on the inner walls of the hanging chuck and the second hanging chuck; and hydraulic fluid with pressure difference are fully filled in two cavities of the hydraulic cylinders. The hanging device has such advantages as simple operation and strong operability under emergency condition.

The invention relates to an underwater monitoring cutting collection device, comprising a body structure, wherein a plurality of walking rollers are fixedly arranged at the bottom of the body structure; at least one impeller which is driven by a first motor and is used for propulsion is fixedly arranged at the tail part of the body structure; an operation arm is hinged at the upper part of the body structure; an oil cylinder for jacking and putting down the operation arm is arranged between the operation arm and the body structure; a grinding wheel and pliers, and a second motor and a third motor which supply power to the grinding wheel and the pliers are fixedly arranged at the front end of the operation arm; a search light and a camera are arranged at the upper part of the operation arm; a container for collecting cut objects is fixedly arranged below the grinding wheel and the pliers on the body structure; a wireless transmission module and a control terminal are in signal connection; the first motor, the second motor and the third motor are hydraulic motors; a controller is used for controlling starting, closing and power adjustment of the hydraulic motors; and the camera sends photographed real-time images to a control terminal through the wireless transmission module. According to the device, the working efficiency for underwater observation and monitoring collection of cultivation is improved, and the labor cost is reduced.

The invention relates to a portable underwater cutting device of an aquaculture water area. The device comprises a shell, a motor, a cutting piece, a shell cover and an oil cylinder; the cutting piece is coaxially fixed to an output shaft of the motor, the cutting piece is located in the shell, the motor is fixedly connected with the shell, the motor is rotatably connected with the shell cover through a shaft pin, the oil cylinder is fixed to the shell cover, an oil cylinder ejection rod stretches into the shell cover, a push head is arranged at the end of the ejection rod, and the push head is aligned with the radial direction of the cutting piece. Impurities in the aquaculture water area can be cleaned, after an operator finds the impurities in a pond, the impurities can be removed through simple operation, the oil cylinder drives the cutting piece to rotate at the high speed, underwater metal impurities of iron wires, iron nets, iron strips and the like and soft impurities of aquatic plants, net ropes and the like can be cut, a dedicated cleaning device is not needed, and the use field of the device is wide.

The invention relates to a high-temperature-resistant carbon-fiber-core photoelectric composite overhead conductor, belonging to the technical field of conductors. The high-temperature-resistant carbon-fiber-core photoelectric composite overhead conductor sequentially comprises a wire core, an optical fiber layer, a tightening belt, a first insulating sheath, a heat-resistant layer and an outer sheath from inside to outside, wherein the wire core sequentially comprises a carbon fiber core, a round aluminum wire and a second insulating sheath from inside to outside; the optical fiber layer comprises a single-mode optical fiber unit and a multi-mode optical fiber unit; the single-mode optical fiber unit and the multimode optical fiber unit are symmetrically arranged at two sides of the wirecore; and two layers of trapezoidal soft aluminum molded lines are symmetrically arranged between the single-mode optical fiber unit and the multimode optical fiber unit. The high-temperature-resistant carbon-fiber-core photoelectric composite overhead conductor is used for improving the comprehensive performance of the composite conductor.

The invention relates to an earth shoulder blind ditch system for pavement edge centralized drainage. The defects such as water deposited on the pavement, sand barrier, snow barrier, inconvenience in sweeping, conflict with the guardrail position, small capacity, small longitudinal spacing of a draining tank, unsuitableness for small longitudinal slopes and zero longitudinal slope and poor anti-frost property exist in the pavement edge centralized drainage measures. According to the system disclosed by the invention, a cement concrete base is arranged on the roadbed top surface of the pavement edge along the longitudinal direction of the road; the cross section of the cement concrete base is U-shaped; a longitudinal groove is reserved in the groove bottom; a semi-transparent non-sand pipe is arranged at the groove bottom; a permeable pipe wall is arranged on the upper half part; an impermeable pipe wall is arranged on the lower half part; the upper part of the semi-transparent non-sand pipe is filled with graded broken stones to be surface of the roadbed slope. According to the system disclosed by the invention, the water on the pavement can be allowed to flow over to pavement and earth shoulder so as to permeate into the graded broken stone layer and further enters the semi-transparent non-sand pipe to flow along the longitudinal direction of the road so as to be discharged along with the draining tank, the water deposition and sand and snow barrier are avoided, the longitudinal slope adjustment capacity is high, the system can adapt to a small longitudinal slope or zero longitudinal slope road section, and frequent cutting of the side-slope protection project is avoided.

The invention provides a printing ink using an inorganic nanometer material. The printing ink using the inorganic nanometer material adopts an organic solvent, and comprises at least one type of inorganic nanometer material and at least one type of fluorine-containing ketone organic solvent, wherein the structure of the fluorine-containing ketone organic solvent is shown in a formula III, namely (Rb')n'-(Rfb)n-CO-(Rfa)m-(Ra')m'; in the formula III, Rfa and Rfb are independently selected from partially or totally fluorated alkyl and aryl; Ra' and Rb' are independently selected from H (hydrogen), aliphatic group with C1 to C30, aromatic group, F (fluorine), Cl (chloride), Br (bromine) and I (iodine); the value ranges of m, n, m', and n' meet the requirements that m and n are respectively 0 or 1, and m and n are not simultaneously 0; m' and n' are respectively 0 or 1.

The invention discloses a carrying, loading and unloading mechanism of a long steel rail transport cart unit. The carrying, loading and unloading mechanism comprises a lifting device, a swing device and a guide device. The lifting device is composed of lifting oil cylinder assemblies and a connecting lever and is used for displacement of a work trolley in the vertical direction, and therefore thefunctions of off-running coupling and unhooking release are achieved. The swing device is formed by a swing oil cylinder assembly, a swing lever assembly and a swing oil cylinder pivot seat assembly and is used for displacement of the work trolley in the horizontal direction, and therefore it is guaranteed that the trolley accurately enters railway rails and runs along the paths of the rails. Theguide device is formed by a guide barrel seat, a guide barrel assembly and a drive oil cylinder assembly and is used for achieving displacement of the work trolley in the rail direction, and thereforethe off-running and release functions are achieved. The carrying, loading and unloading mechanism has the advantages of being simple in structure, convenient to operate, high in unloading efficiency,low in manufacturing cost, high in stability and universality and the like and is mainly used for wagons with work vehicles at the tails.

The invention discloses a functional code component development method. According to the technical scheme, the method comprises that: S1, a user can operate directly by downloading a plug-in through an official component library; S2, a group of services provided by the Idea is utilized; S3, a toolkit of the functional code is called through a specified GitHub warehouse by utilizing the controllability of the Idea plug-in on the code; S4, a developer completes configuration through the configuration file; and S5, the expansion contract is referred to, a packaging mechanism is provided, and on the basis of the provided function, the user can also package a toolkit by himself / herself, and a corresponding version number is generated to cope with a business scene which cannot be handled. According to the functional code and summary document output function provided by the invention, the same open source library is continuously improved, and the workload of developers is reduced. Functional development is completed in a plug-in mode, and the technical development threshold, the application development difficulty and the maintenance difficulty are reduced.

The embodiment of the present disclosure discloses a phase-change memory and a method for manufacturing the phase-change memory. The phase-change memory includes: a first conductive wire, a phase-change memory unit, and a second conductive wire that are sequentially stacked from bottom to top; wherein, The first conductive line and the second conductive line are parallel to the same plane and perpendicular to each other; the phase change memory unit is perpendicular to the first conductive line and the second conductive line; the phase change memory unit includes: The tunnel barrier layer, the first electrode layer, the gate layer, the second electrode layer, the phase change storage layer and the third electrode layer are stacked in sequence on top; wherein, the first electrode layer is used to block the tunnel potential Diffusion between the barrier layer and the gate layer; the tunnel barrier layer has an on state and an off state; wherein the tunnel barrier layer in the on state conducts electricity, and the tunnel barrier layer in the off state The tunnel barrier layer is electrically insulating.

The invention discloses a layout method for a PCB (Printed Circuit Board) mounted with a BGA (Ball Grid Array) chip and a PCB prepared by applying the same and relates to the technical field of an electronic circuit. The layout method comprises the following steps: S1, providing a PCB to be mounted with the BGA chip, wherein the PCB is provided with welding spots corresponding to pins of the BGA chip; S2, confirming the positions of the welding spots on the PCB, which correspond to an NC (Not Component) pin and / or a function nonuse pin; S3, covering the welding spots corresponding to the NC pin and / or the function nonuse pin of the BGA chip with insulation ink; and S4, according to functional requirements, wiring or forming metalized through holes in a coverage region of the insulation ink. The invention solves the technical problem of high layout difficulty of the PCB mounted with the GBA chip in the prior art. According to the invention, the layout difficulty of the PCB mounted with the GBA chip is reduced to the greatest extent and development and processing periods of the PCB mounted with the GBA chip are shortened.

The invention discloses a support cushion. The support cushion comprises a body (1) and a support arranged on the body (1). Due to the technical scheme, the support cushion is arranged between a main board and a shell, so that the main board cannot be wetted and corroded when the shell is wetted, and the function stability and safety of an electric water heater are ensured.

The invention discloses a camera module and electronic equipment, and belongs to the technical field of communication equipment. The disclosed camera module comprises a camera, a base and a first support, the first support is arranged on the base, the camera is rotatably arranged on the first support, the camera comprises a circuit board and a photosensitive chip, a mounting groove is formed in a first plate face, back to the base, of the circuit board, and the photosensitive chip is arranged in the mounting groove. The second board surface, facing the base, of the circuit board comprises a middle board surface and a peripheral board surface, the peripheral board surface is arranged around the middle board surface, the middle board surface protrudes out of the peripheral board surface in the direction facing the base, a first sub-gap is formed between the middle board surface and the base, and a second sub-gap is formed between the peripheral board surface and the base. According to the scheme, the problem that the height of the camera module is large in the prior art can be solved.

The invention relates to a portable underwater cutting device of an aquaculture water area. The device comprises a shell, a motor, a cutting piece, a shell cover and an oil cylinder; the cutting piece is coaxially fixed to an output shaft of the motor, the cutting piece is located in the shell, the motor is fixedly connected with the shell, the motor is rotatably connected with the shell cover through a shaft pin, the oil cylinder is fixed to the shell cover, an oil cylinder ejection rod stretches into the shell cover, a push head is arranged at the end of the ejection rod, and the push head is aligned with the radial direction of the cutting piece. Impurities in the aquaculture water area can be cleaned, after an operator finds the impurities in a pond, the impurities can be removed through simple operation, the oil cylinder drives the cutting piece to rotate at the high speed, underwater metal impurities of iron wires, iron nets, iron strips and the like and soft impurities of aquatic plants, net ropes and the like can be cut, a dedicated cleaning device is not needed, and the use field of the device is wide.

The invention provides an offset display light machine, a method thereof and near-to-eye display equipment, which can effectively reduce or eliminate ghost images in a display picture and improve the impression. The offset display light machine comprises an illumination assembly used for emitting an illumination light beam; the bias imaging assembly is used for modulating the image light beam in a deflection manner for imaging; the relay display assembly is arranged in a light path between the illumination assembly and the bias imaging assembly, and the relay display assembly is used for modulating an illumination light beam from the illumination assembly into an image light beam so as to spread the image light beam to the bias imaging assembly; the bias imaging assembly is used for deflecting the image light beam from the relay display assembly so as to obliquely project the image light beam to the coupling-in area of the waveguide display body, so that the view field of the bias display light machine is biased.