Showing papers on "Electrical connection published in 2018"

A Wearable Detector for Simultaneous Finger Joint Motion Measurement

Abstract: This paper presents a wearable and stretchable detector for simultaneous finger joint motion measurement, providing the feasible technical solutions to solve the problems existing in the current devices. The sensor array installed in the detector consists of 14 custom-made bending sensors and an inertial measurement unit with high accuracy. The glove support for a sensor array, which is made of three silicone materials with different elasticity, not only overcomes the drawbacks of cloth support, but also addresses the compatibility between the stretch substrate and the inelastic sensing components. Besides, two-section electrical connection avoids the problems caused by the external wires in traditional solutions to enhance the durability of glove. The experiment results indicated that the wearable detector offers a good user experience by exerting a small force on fingers. The device also shows a strong durability as it worked properly after tens of thousands of bending. The measurement tests on a single sensor demonstrated that two kinds of sensors are both with high accuracy. Besides, the hand goniometric system has an excellent performance in terms of hand motion detection. The measurement error of the device in subjects with different hand sizes is within a reasonable range. The good properties of the sensory detector allow it to be applied in clinical applications.

Multi-Material 3D Printed Bendable Smart Sensing Structures

Abstract: This paper presents a novel additive manufacturing method to obtain bendable smart sensing structures having printed strain sensors and interconnects to gain access to embedded electronic components. The presented smart structure is obtained by simultaneous printing of functional materials along with conventional polymer-based 3D printing materials. To this end, a low-cost open-source 3D printer was augmented with a silver palladium metallic paste extruder. The strain sensors in the presented 3D printed smart structure are particularly useful for wearable motion sensing applications such as knee joint motion analysis. The printed interconnects allow for electrical connection with the Light Emitting Diodes (LEDs) embedded within the 3D printed structure. With electronic components embedded in the flexible 3D printed structure, this work also demonstrates a novel method for soft packaging of electronic and sensing components. The electrical tests conducted on the smart structure show excellent electrical continuity. The 3D printed strain sensors, tested in static and dynamic bending conditions, showed a linear response of resistance. Under no strain, the resistance of the sensor was measured to be 0.9671 n (resistivity of 9.671×10−6 Ω.m) and during testing it exhibited a gauge factor of 1. Multi-material additive manufacturing demonstrated in this paper opens a new direction for fabrication of complex 3D structures with embedded sensors and electronics and offers significant advantages for rapid prototyping and packaging.

Electrically parallel fused LEDs

Abstract: An LED component comprises a plurality of fused light-emitting diodes (LEDs) (e.g., micro-transfer printable or micro-transfer printed LEDs). Each fused LED comprises an LED with first and second LED electrical connections for providing power to the LED and a fuse with first and second fuse electrical connections. The first LED electrical connection is electrically connected to the first electrode. The first fuse electrical connection is electrically connected to the second LED electrical connection and the second fuse electrical connection is electrically connected to the second electrode. A fused LED source wafer comprises an LED wafer having a patterned sacrificial layer forming an array of sacrificial portions separated by anchors and a plurality of fused LED components, each fused LED component disposed entirely on or over a corresponding sacrificial portion. A light-emission system comprises a system substrate and a plurality of fused LED components disposed on or over the system substrate.

Manufacturing method of a package structure

Abstract: A method of manufacturing a package structure is provided with the following steps, providing a first die, a second die and a third die; forming a first redistribution layer located on and electrically coupled to the first die, the second die and the third die; and forming an antenna located on and electrically coupled to the first die, the second die and the third die, wherein a distance of an electrical connection path between the first die and the antenna is smaller than or equal to a distance of an electrical connection path between the second die and the antenna and a distance of an electrical connection path between the third die and the antenna.

Improving fast charging efficiency of reconfigurable battery packs

Abstract: Recently, reconfigurable battery packs that can dynamically modify the electrical connection topology of their individual cells are gaining importance. While several circuit architectures and management algorithms are proposed in the literature, the electrical characteristics of the reconfiguration circuit architectures are not sufficiently studied so far. In this paper, we derive a detailed analytical model for a state-of-the-art reconfiguration architecture capturing the losses introduced by the parasitic resistances of the circuit components. Based on this model we evaluate a novel fast charging strategy, which for the first time utilizes the reconfigurable battery pack architecture in order to reduce the losses during fast charging by switching between parallel and series connection of the cells. In order to do this, we consider the electrical characteristics of the reconfigurable circuit components. Since the component resistances are the main driver for the power losses during charging, we are able to give a realistic perspective on the overall pack performance and the efficiency increase due to the utilized fast charging strategy. Furthermore, using the analytical model, we highlight the challenges faced by existing reconfiguration architectures using state-of-the-art components and we derive specifications for the switches for further improving the energy efficiency. Experimental results show that our strategy improves the charging efficiency by up to 10 %.

Progress and opportunities in high-voltage microactuator powering technology towards one-chip MEMS

Abstract: In this paper, we address issues and solutions for micro-electro-mechanical-systems (MEMS) powering through semiconductor devices towards one-chip MEMS, especially those with microactuators that require high voltage (HV, which is more than 10 V, and is often over 100 V) for operation. We experimentally and theoretically demonstrated that the main reason why MEMS actuators need such HV is the tradeoff between resonant frequency and displacement amplitude. Indeed, the product of frequency and displacement is constant regardless of the MEMS design, but proportional to the input energy, which is the square of applied voltage in an electrostatic actuator. A comprehensive study on the principles of HV device technology and associated circuit technologies, especially voltage shifter circuits, was conducted. From the viewpoint of on-chip energy source, series-connected HV photovoltaic cells have been discussed. Isolation and electrical connection methods were identified to be key enabling technologies. Towards future rapid development of such autonomous devices, a technology to convert standard 5 V CMOS devices into HV circuits using SOI substrate and a MEMS postprocess is presented. HV breakdown experiments demonstrated this technology can hold over 700 to 1000 V, depending on the layout.

Vital Signs Monitor with a Removable and Dischargable Battery

Abstract: A vital signs monitor includes an equipment housing defining an equipment compartment, a circuit assembly and a battery residing inside the equipment compartment, an electrical connector forming a connection between the battery assembly and the circuit assembly, and a battery discharge circuit. A retainer joined to the equipment housing retains the battery assembly in the housing. The retainer is separable from the housing so that its separation causes a break in the electrical connection and activates the discharge circuit.

An apparatus that automates the connecting process between a primary connector and a secondary connector for charging an electric vehicle

Abstract: Provided is an automated electrical connection apparatus for an electric vehicle. The automated electrical connection apparatus employs a primary connector connection apparatus at a charge site and a secondary connector connection apparatus on a vehicle. In its non-use state, the primary connector at the charge site is flush with the surface of the ground. When the charging system is activated, the primary connector will extend up from the surface of the ground to engage the secondary connector on the vehicle. The automated electrical connection apparatus provides a means to align the corresponding electrical connection within primary and secondary apparatus to establish a connection between the primary connector at the charge site and the secondary connector on the vehicle. Once the charging cycle is terminated, the component parts of the charging system will retract back to the flush position.

Wearable electronic device

Abstract: A wearable electronic device includes a host, a wearing member, and a backup power module. The host includes a functional module, a main power module, and an electrical connection port. The main power module is configured to supply power to the functional module. The electrical connection port is electrically connected to the main power module. The wearing member is connected to the host. The backup power module is detachably disposed at an upper region or a surrounding region of the host to electrically couple the electrical connection port, or is detachably disposed on the wearing member and configured to electrically couple the electrical connection port to supply power to the main power module.

Phase-Locking of Spin-Torque Nano-Oscillator Pairs by Magnetic Dipolar Coupling in Electrical Serial Connection

Abstract: Synchronization of spin-torque nano-oscillators (STNOs) by magnetic dipolar interactions in a parallel electrical connection (PC) introduces the technological possibility for an enhancement of outp...

High integration intelligent power module and electrical equipment

Abstract: The utility model discloses a high integration intelligent power module and electrical equipment, this high integration intelligent power module includes: circuit wiring base plate, circuit wiring base plate have the first face and the second face of relative setting, all are provided with a plurality of installations position on first face and the second face, control module is corresponding to be installed on the installation position of first face, rectifier bridge, PFC power switching module and a plurality of power module correspond respectively installs on the installation position of second face, wherein, control module and the circuit wiring electrical connection of PFC power switching module through respective installation position and circuit wiring base plate inside, control module and the circuit wiring electrical connection of a plurality of power modules through respective installation position and circuit wiring base plate inside. The utility model provides an automatically controlled board components and parts that adopt a plurality of separations when realizing the device more, the assembly is complicated to and self consumption is great, generates heat that it isalso more serious to wait, leads to the thermal efficiency of air conditioner to hang down, is unfavorable for air conditioner energy saving and emission reduction's problem.

Electrical connection device for a photovoltaic system

Abstract: An electrical connection box for connecting a panel of exterior cladding of a building, the connection box including a first shell and a second shell which are interlockable, the first shell including a base including one aperture topped by a sealing chamber, a lateral wall surrounding the base and extending perpendicularly to it, the lateral wall including a removable hatch, removable to expose a wire passage, an electrical terminal connected to the base, with the axis perpendicular to the base; the second shell including a base, a lateral wall surrounding the base and extending perpendicularly to it, the lateral wall including a wire passage, an electrical terminal of inverse polarity to that of the electrical terminal of the first shell, the electrical terminal having an axis perpendicular to the base, connected to the base and positioned in such a way that it is plumb with the electrical terminal of the first shell when the first and the second shell are interlocked.

Power and/or alarming security system for electrical appliances

Abstract: The present disclosure relates generally to security systems and, more particularly, to a power and/or alarming security system for electrical appliances. In an example embodiment, an apparatus comprises a socket and a circuit. The socket can be configured for detachable electrical connection with an electrical appliance. The circuit can be configured to (1) provide power to a connected electrical appliance through the socket, and (2) calibrate an alarm limit for a security function for the socket based on a plurality of electrical characteristics of the connected electrical appliance that are measured via the socket, wherein the electrical characteristics comprise an admittance characteristic and a current draw characteristic of the connected electrical appliance. Furthermore, the circuit can calibrate the alarm limit for the socket according to a plurality of calibration phases.

Impedance Matching for High-Speed InP Integrated Electro-Absorption Modulators

Abstract: We study the influence of electrical connection methods on the high speed performance of electro-absorption modulators (EAMs). We report the reflection parameter S 11 below −10dB up to 22GHz and 32GHz bandwidth for a mounted EAM chip-on-carrier, with input alumina transmission line and output termination load.

Mechanical and electrical interconnects between conductive threads in fabrics to PCB, FPC, and rigid-flex circuits

Abstract: An electrically interconnected assembly is a technology enabler for mechanical and electrical interconnects between conductive threads, such as those within fabrics and textiles, to electrical connection points, such as contact pads on a printed circuit board (PCB), a flexible printed circuit (FPC), and/or rigid-flexible circuit board. The electrically interconnected assembly uses an anisotropic conductive coated fabric to make an electrical and mechanical interconnect in fabrics or textiles. All fabrics or textiles can be anisotropic conductive coated and cut into sheet form or supplied in roll form.

Laser diode module

Abstract: A laser diode module is described herein. In accordance with a first exemplary embodiment, the laser diode module includes a first semiconductor die including at least one electronic switch, and a second semiconductor die including at least one laser diode. The second semiconductor die is bonded on the first semiconductor die using a chip-on-chip connecting technology to provide electrical connection between the electronic switch and the laser diode.

Method for detecting a fault in an installed appliance

Abstract: Method for detecting faults in electric appliances operated with water preferably a washing machine or a dishwasher in which a resistive path to ground or earth is created by flowing water (WP) in or out of said appliance. A logic circuit (LC) in electrical connection with said resistive path is configured to execute the diagnostic of said appliance, particularly in regard to the proper connection of the appliance to ground or earth.

Electric connecting structure and manufacturing method thereof

Abstract: An electric connecting structure is provided, which includes an outer casing, at least two electrical connection terminals, at least two cables, and an electronic component. At least part of each electrical connection terminal is fixed in the outer casing. Each of the at least two cables has an end connected to the corresponding electrical connection terminal. The electric connection structure further includes at least one cable holder molded onto the at least two cables and mounted in the outer casing. The electronic component is connected between the ends of the at least two cables. The electric connection structure can simplify the wiring operations and consequently reduce the time and costs required for the wiring operations.

lifting function Cable clamp connection device and non-power-failure power distribution method method using the device

Abstract: The present invention relates to a cable connection apparatus and an uninterruptible power supply distribution method. More specifically, in a conventional uninterruptible power supply distribution method, a heavy construction cable clamp has been connected and demolished by relying on the strength of an electro-pneumatic live wire. In the present invention, the construction cable clamp is towed and lifted by a mechanical operation of the small strength of the electro-pneumatic live wire. In a conventional manner, a temporal cable locker is required to be separately installed, so that the construction cable is held and connected to an extra high-voltage power line. In the present invention, the temporal cable locker is not used, and the cable clamp is held, with an insulating towing belt, in the cable clamp connection apparatus having insulation and lifting functions, and the construction cable clamp held in the cable clamp connection apparatus is directly connected to the extra high-voltage power line if necessary, such that an operation process is simplified, thereby shortening an operation time. It is possible to perform complete electrical connection of the construction cable clamp by a simple mechanical operation without relying on the strength of the electro-pneumatic live wire. Thus, a workload of an operation can be remarkably reduced, thereby enhancing field utility, economical efficiency, and safety.

Backside Optical I/O Module for Si Photonics Integrated with Electrical ICs Using Fan-Out Wafer Level Packaging Technology

Abstract: We propose a novel Si photonics module that overcomes the issues of conventional Si photonics modules such as package structure and electrical connection. The module incorporates an optical fiber socket fabricated by blind via socket (BVS) technology, which implements backside optical I/O in a photonic IC (PIC) by forming blind via holes on the backside. High-speed high-density electrical connection to both the PIC and an electrical IC (EIC) is also obtained in the module by fan-out wafer level packaging (FOWLP) technology. These technologies achieve a surface-mountable substrate-less fan-out optical module. It realizes a practicable integrated module of optoelectronic devices excellent in terms of electrical characteristics such as signal integrity (SI) and power integrity (PI), heat characteristics, and miniaturization. This paper presents a BVS module that enables optical coupling between a III-V/Si photodiode (PD) fabricated on a Si substrate and a multi-mode optical fiber by passive alignment of only insertion of the fiber into a blind via hole on the backside. High-speed optical signal transmission is also demonstrated with a fan-out optical module in which a BVS and an EIC are integrated by FOWLP and a vertical-cavity surface-emitting laser (VCSEL) or PD is mounted on the BVS.

Explosion mechanism investigation of high power IGBT module

Abstract: High power IGBT modules are crucial component in switching power electronic applications, such as renewable energy, traction, electrical vehicles. The IGBT module packages usually provide electromagnetic (EM) and chemical protection, mechanical support, heat dissipation, electrical connection for electrical components and interconnections [1]. 3.3kV/1500A IGBT module, with 190mm×140mm footprint, is one type of standard packages that have been vastly utilised in traction, industry applications for potential MW level system. There are different failure modes related to bonding wire, soldering layer, silicon chip, humidity, environment that affect long term reliability [2]. One of failures is module explosion during the operation in the filed or even at test bench. The high power module explosion can cause direct damages and huge influences to surrounding systems or even cause safety problems depending on its application scenario [1-3].

Electronic equipment and laser infrared emission device

Abstract: The invention discloses a laser infrared emission device. The laser infrared emission device comprises a circuit board, a laser emission chip and a laser diffusion piece, wherein the laser emission chip is arranged on the circuit board, the laser diffusion piece is supported on the circuit board by a bracket, laser infrared light projected from the laser emission chip penetrates through the laserdiffusion piece, the bracket comprises a first electrical connection part and a second electrical connection part, a third electrical connection part is arranged on the laser diffusion piece, the first electrical connection part, the third electrical connection part, the second electrical connection part and the circuit board are sequentially and electrically connected and form a detection lop, the laser infrared emission device also comprises a detection assembly and a controller, the controller is connected with the detection assembly, the detection assembly is used for detecting an on/off state of the detection loop, and the controller is used for controlling the laser emission chip to be closed when the detection loop is in a breaking state. By the scheme, the problem of harm to a human body generated by laser infrared ray caused by damage or falling of the laser diffusion piece can be solved. The invention also discloses electronic equipment.

Electrical connection configurations for privacy glazing structures

Abstract: A privacy glazing structure may include an electrically controllable optically active material that provides controlled transition between a privacy or scattering state and a visible or transmittance state To make electrical connections with electrode layers that control the optically active material, the privacy glazing structure may include electrode engagement regions In some examples, the electrode engagement regions are formed as notches in peripheral edges of opposed panes bounding the optically active material The notches may or may not overlap to provide a through conduit in the region of overlap for wiring In either case, the notches may allow the remainder of the structure to have a flush edge surface for ease of downstream processing

Electrical connection device

Abstract: Provided is an electrical connection device (1) including a connector (2) having a hollow connecting cavity (21), each of two opposite sides of the connecting cavity is connected to a conductive plug (22) electrically coupled with the connecting cavity (21). The connecting cavity (21) is form by a plurality of flexible conductive materials. When in use, the grid-like connecting cavity (21) made of the flexible conductive materials can be elongated, compressed, or radially twisted, and is adaptive to changes in relative displacement at various angles at various angles in the axial direction or radial direction between different electrical connecting bases, thereby preventing degradation of performance of electrical connection due to the changes in relative displacement.

Feeding device for tire wire winding machine

Abstract: The invention discloses a feeding device for a tire wire winding machine and aims to solve problems of poor steel wire friction quality, proneness to accumulation and instability of steel wire tensionin the prior art. Two ends of a spool are supported on a let-off supporting frame through a let-off rotating shaft and a clamping part, and one end of the spool is in detachable connection with one end of the let-off rotating shaft. A let-off frequency-variable motor is mounted on one side of the let-off supporting frame, and an output shaft of the let-off frequency-variable motor is in transmission connection with the other end of the let-off rotating shaft through a let-off speed-reduction diverter. A let-off fixed wheel set is rotationally supported on the let-off supporting frame througha fixing support arm, and a let-off moving wheel set is rotationally supported at an output end of the let-off supporting frame through a moving support arm. An angular displacement sensor between thelet-off supporting frame and a rotating connector is in electrical connection with a controller, and the controller is in electrical connection with the let-off frequency-variable motor through a frequency converter. The feeding device has advantages that friction of steel wires is avoided, high quality and tension stability of steel wires are realized, butt joints are less prone to breakage, stability in operating and braking of the spool is achieved, and less proneness to accumulation is realized.

Heat removal between top and bottom die interface

Abstract: Heat dissipation technology in a die stack is disclosed. In one example, an electronic device comprises a pair of electrically coupled dies; and a heat spreader disposed between the pair of dies and electrically isolated from an electrical connection between the pair of dies.

Float connector for interconnecting printed circuit boards

Abstract: A float connector for interconnecting two printed circuit boards that includes a contact assembly including a plurality of contacts and a holder therefor such that opposite ends thereof are exposed outside of the holder. The holder supports each contact in a clearance fit inside thereof, thereby allowing each contact to radially tilt to compensate for radial misalignment between the boards. A first guide member has a plurality of first guide features corresponding to the ends of the contacts, respectively, for aligning the contact ends for electrical connection with one board. A second guide member has a plurality of second guide features corresponding to the ends of the contacts, respectively, for aligning the contact ends for electrical connection with the other board. The contact assembly is axially moveable between the guide members along an axis generally parallel to longitudinal axes of the contacts to compensate for axial misalignment between the boards.

Power connector assembly used for communication system

Abstract: A power connector assembly (130) comprises a power rail (132) configured to be mounted within an equipment cabinet (102). The power rail (132) has a power supply circuit (150). A sliding power connector (134) configured to be terminated to a host circuit board (140) has a power contact (220) electrically connected to the power supply circuit (150) of the power rail (132). The sliding power connector (134) is configured to slide along the power rail (132) as an equipment rack (110) holding the circuit board is opened and closed during an extension cycle of the extendible equipment rack. The power contact (220) maintains electrical connection with the power rail (132) during the entire extension cycle.