132 results about "Base isolation" patented technology

A computing system for a secure and reliable firmware update through a verification process, dynamic validation and continuous monitoring for error or failure and speedy correction of Internet of Things (IoT) device operability. The invention uses a Trusted Execution Environment (TEE) for hardware-based isolation of the firmware update, validation and continuous monitoring services. The isolation is performed by hardware System on a Chip (SoC) Security Extensions such as ARM TrustZone or similar technologies on other hardware platforms. The invention therefore comprises Firmware Update Service (FUS), System Validation Service (SMS) and Continuous Monitoring Service (CMS) running in the TEE with dedicated memory and storage, thus providing a trusted configuration management functionality for the operating system (OS) code and applications on IoT devices.

Services running in the TEE use both direct (hardware level) and indirect (software agents inside main execution environment (MEE)) methods of control of the MEE. Embodiments of the invention apply all updates to a staging (new) execution environment (SEE) without changing of the MEE.

Various methods are described where the semiconductor die and the lead frame (or the BGA or LGA substrate) are spaced apart to reduce stress. In one scenario, an air gap is formed between the semiconductor die and the lead frame by depositing a perimeter (made, for example, using polymer) either on the semiconductor die or the lead frame. In another scenario, an anisotropic conducting film (ACF) is formed with an air gap between the semiconductor die and the lead frame (or the BGA or LGA substrate). The air gap relieves stress on the semiconductor die. Further, a lead frame-based isolator package and a BGA (or LGA) isolator package are described. A window-frame ACF-based isolation method for magnetic coupling in a lead-frame package and BGA (or LGA) package is also described.

The invention provides a composite three-way intelligent shock-isolation bearing, which is suitable for building construction, bridges, bases of important cultural relics and other different shock-isolation systems. The upper part of the six shape memory alloys is connected to the prismatic steel top plate through the fixed sleeve, and the lower part is connected to the prismatic steel bottom plate sprayed with damping materials. At the same time, the six disc springs on the prismatic steel bottom plate and the intelligent friction plate jointly support the prismatic steel top plate. When the bearing is subjected to a horizontal earthquake, the upper and lower steel plates move horizontally relative to each other, and the shape memory alloy provides a large restoring force, and drives the friction disc to change the anchoring force of the bolt through the electric deformation of the piezoelectric driver, and exerts intelligent adjustment of the horizontal friction Energy dissipation; when the support is subjected to a vertical earthquake, the disc spring bears the load and deforms, and stores a certain potential energy to consume the vertical earthquake force. The composite three-way intelligent shock-isolation bearing of the invention can effectively solve the three-way shock-isolation problem of structures, and provide guarantee for the safety of building structures and the protection of important cultural relics.

A base isolation device for a structure capable of efficiently and effectively suppressing the vibration of a structural body in surface outside direction, wherein a tension member having on overall length longer than an interval between support points provided on the structural body at a specified interval is disposed between the support points, one end parts of first link pieces are rotatably connected midway to the tension member directly or through rigid members, one end parts of second link pieces are rotatably connected to the structural body, the other end parts of the first link pieces are rotatably connected to the other end parts of the second link pieces, and an energizing member providing a tension to the tension member by energizing the first link piece and the second link piece and a damping member operated by the rotation of the first link piece and the second link piece are installed between the structural body forming the structure and connection parts between the first link pieces and the second link pieces.

The invention discloses a mounting structure and a construction method of an isolation bearing in existing building base isolation reinforcement. The mounting structure of the isolation bearing comprises an upper pier, an isolation bearing body and a lower pier. The isolation bearing body is arranged between the upper pier and the lower pier. The upper pier is connected with the isolation bearingbody through an upper portion connection measure, and the lower pier is connected with the isolation bearing body through a lower portion connection measure. The upper portion connection measure and the lower portion connection measure both comprise pre-buried plates, anchoring ribs, bolt locking parts, grouting material mixtures, bolt assemblies and isolation bearing connection plates. The mounting structure and the construction method overcome the defect that a traditional pre-buried sleeve connection mode cannot adapt to isolation reinforcement construction, the bolt locking parts and the bolt assemblies are adopted to solve the problem of precise positioning of bolt holes, the isolation bearing is protected effectively, and the mounting and connection levels of the isolation bearing are improved.

A base isolation non-contact limit system belongs to the technical field of shock reduction and shock isolation in an engineering structure, and includes a limit magnet I (5), a limit magnet II (6) and a counter force support (7), wherein the counter force support (7) is connected with a base; the limit magnet II (6) is anchored onto the counter force support (7); the limit magnet I (5) is anchored onto a shock isolation layer upper floor system(8); N poles or S poles of the limit magnet I (5) and the limit magnet II (6) are opposite; and distance is reserved between the limit magnet I (5) and the limit magnet II (6). According to the homo-polar repulsion principle of the magnet, counter force is generated between the magnets to limit and control displacement of a shock isolation layer within a safe range, so that damage to the shock isolation layer and other auxiliary devices can be avoided.

A seismically isolated structure and a method of constructing same provide a rigid diaphragm, a plurality of footings each positioned at least partially under the rigid diaphragm, and a plurality of base isolation devices each positioned between a footing and the rigid diaphragm, wherein the rigid diaphragm was constructed in situ above the footings generally below its final elevation. A barrier is positioned between the rigid diaphragm and at least the footings to prevent bonding between the rigid diaphragm and the footings. The barrier, which may be structural or chemical or a combination thereof, may also span between the footings if appropriate.

A modular base isolation system suitable for constructing isolation floors and platforms using the same elements, and capable of scaling up or down to suit the payload mass. These systems are low profile and permit placement of such systems un paces having restricted headroom. Also kits and methods or making and using such modular isolation systems.

The invention includes methods of fabricating a bipolar transistor that adds a silicon germanium (SiGe) layer or a third insulator layer of, e.g., high pressure oxide (HIPOX), atop an emitter cap adjacent the intrinsic base prior to forming a link-up layer. This addition allows for removal of the link-up layer using wet etch chemistries to remove the excess SiGe or third insulator layer formed atop the emitter cap without using oxidation. In this case, an oxide section (formed by deposition of an oxide or segregation of the above-mentioned HIPOX layer) and nitride spacer can be used to form the emitter-base isolation. The invention results in lower thermal cycle, lower stress levels, and more control over the emitter cap layer thickness, which are drawbacks of the first embodiment. The invention also includes the resulting bipolar transistor structure.

The invention provides a shearing energy dissipation type shock insulation layer limiting device, and belongs to the field of engineering structure seismic isolation and energy dissipation seismic mitigation. Elastic anti-collision damping material (6) is bonded to a side anti-collision plate (5) which is perpendicularly fixed to a shearing steel plate (3), two sides of the shearing steel plate (3) are bonded to damping material layers (2), an upper connecting steel plate (1) is bonded to the damping material layer (2) on the upper side, a lower connecting steel plate (4) is bonded to the damping material layer (2) on the lower side, the lengths of the upper connecting steel plate (1) and lower connecting steel plate (4) are both larger than the length of the damping material layers (2), shearing screws penetrate the upper connecting steel plate (1) and the lower connecting steel plate (4), and the other ends of the upper connecting steel plate (1) and lower connecting steel plate (4) are connected to a limiting baffle (8). By the aid of the device, safety of a base isolation system under the action of near-fault earthquakes is improved.

A base isolation device and a method of installing the base isolation device capable of developing a stable base isolation performance for a base-isolated object having wiring equipment connected thereto and allowing the base isolation device to be installed on an existing base-isolated object without stopping the operation of the base-isolated object, wherein vertically curved rails and rollers running on the rails are disposed between an upper frame and a lower frame orthogonal to each other in a horizontal plane whereby vibration can be damped, and an opening part or an insert area for inserting, therein, the wiring equipment connected to the base-isolated object is provided whereby , at the time of earthquake, the wiring equipment does not touch the base isolation device, and the stable base isolation performance can be developed.

Seismic base isolation and energy dissipation device using a plurality of swing plate's that are placed on a central wall. This arrangement creates a strong load bearing swing beam that moves in true pendulum fashion. This system is placed between the structural load and its foundation. This seismic wave base isolation system has the purpose of absorbing seismic wave displacement energy in all directions. This unique design can scale up for very large and heavy loads or scale down to protect sensitive cargo and equipment from destructive motion. The swing plates inside the swing beam will provide support and absorption of motion by moving as a pendulum and therefore redirecting and dissipating seismic energy. This system has a simple design shape and is therefore inexpensive to construct, is easy to engineer and deploy, it requires no uncommon material and requires very little maintenance or advanced electronics.

Seismic base isolation and energy dissipation device using a plurality of multi-walled swing plate's that are placed on many central walls that are attached to a base support structure. This arrangement creates a strong load bearing multi-walled swing beam that moves in true pendulum fashion. This system is placed between the structural load and its foundation. This seismic wave base isolation system has the purpose of absorbing seismic wave displacement energy in all directions. This unique design can scale up for very large and heavy loads or scale down to protect sensitive cargo and equipment from destructive motion. The multi-walled swing plates inside the multi-walled swing beam will provide support and absorption of motion by moving as a pendulum and therefore redirecting and dissipating seismic energy. This invention is particularly suited to reduce the initial shock of horizontal ground displacement. This system has a simple design shape and is therefore inexpensive to construct, is easy to engineer and deploy, it requires no uncommon material and requires very little maintenance or advanced electronics.

The invention relates to a transmission shaft vibration test system, which includes a test bench, a vibration isolation base, a drive motor, an input speed sensor, a vibration acceleration sensor, an intermediate support, a shaft tube radial displacement sensor, an output speed sensor, and a dynamometer and the controller, wherein the vibration isolation base and the dynamometer are fixedly arranged on the test bench, and are separately arranged on both sides of the test bench, a bracket is fixed between the vibration isolation base and the dynamometer, and a drive is fixed on the upper part of the vibration isolation base. The motor, the speed sensor at the input end is set at one end of the drive motor, the speed sensor at the input end, the vibration acceleration sensor, the radial displacement sensor of the shaft tube, and the speed sensor at the output end are all connected to the controller respectively. The transmission shaft vibration testing system of the present invention can effectively discriminate abnormal sound transmission shafts and non-abnormal sound transmission shafts, so as to realize quality control on the NVH aspect of the transmission shafts.

The invention discloses a tin core laminated rubber bearing seat for base isolation. The tin core laminated rubber bearing seat for the base isolation is characterized in that the tin core laminated rubber bearing seat comprises a body, an upper connecting steel plate and a lower connecting steel plate, a rubber protecting layer adheres to the side surfaces of the body, the upper connecting steel plate and the lower connecting steel plate are fixed on the body through screws, the body comprises a tin core stick, an upper sealing plate, a lower sealing plate and a laminated body, the laminated body is located between the upper sealing plate and the lower sealing plate and formed by sequentially alternating lamination of strengthening steel plates and rubber plates, and the tin core stick sequentially penetrates the upper sealing plate, the laminated body and the lower sealing plate. Compared with tin core laminated rubber bearing seats in the prior art, the tin core laminated rubber bearing seat for the base isolation has the advantages that the tin core laminated rubber bearing seat is high in bearing capacity, damping, horizontal displacement capacity and restoration capacity; moreover, tin reserve is large in China; compared with existing common lead core laminated rubber bearing seats, the tin core laminated rubber bearing seat can achieve all mechanical performances of the lead core laminated rubber bearing seats, the melting point of tin is close to that of lead, and tin is free of toxicity.

The invention provides a seismic metamaterial and method for blocking propagation of seismic lamb waves, and belongs to the technical field of foundation seismic isolation. The seismic metamaterial comprises a plurality of metamaterial unit cells arranged periodically, each metamaterial unit cell comprises a steel block and a soil block, the periphery of each soil block is cubic, a containing cavity is formed in the center of the interior of each soil block, each steel block is located in the corresponding containing cavity, each containing cavity is matched with the corresponding steel block in peripheral shape, the contact surfaces of each steel block and the corresponding soil block are tightly attached, the elastic modulus of the material of the soil block is 0-90 MPa, and the mass density is 600-22,000 kg/m < 3 >. The metamaterial is simple in structure and capable of blocking seismic lamb waves and protecting buildings.

An elastomeric seismic isolator bearing comprising a plurality of elastomeric layers reinforced with a plurality of fiber layers is disclosed, wherein said bearing is capable of exhibiting stable rollover when subjected to a lateral load in an unbonded application.