1003 results about "Key switch" patented technology

An FPGA-based accelerator for bootstrappable fully homomorphic encryption (FHE) employs (1) acceleration of scalar arithmetic operations using a multi-word approach for efficient utilization of standard-width components (multipliers / adders) on custom-width operands; (2) a performant, shift-based modular reduction technique that avoids the need for expensive multipliers; (3) an improved datapath for an expensive Key Switch operation; and (4) an efficient organization of on-chip memory for storing custom-width operands and supplying them at high bandwidth to computation units.

An FPGA-based accelerator for bootstrappable fully homomorphic encryption (FHE) employs (1) acceleration of scalar arithmetic operations using a multi-word approach for efficient utilization of standard-width components (multipliers / adders) on custom-width operands; (2) a performant, shift-based modular reduction technique that avoids the need for expensive multipliers; (3) an improved datapath for an expensive Key Switch operation; and (4) an efficient organization of on-chip memory for storing custom-width operands and supplying them at high bandwidth to computation units.

The invention discloses a key switch and a socket, and relates to the technical field of electric appliances. The key switch comprises a shell, an overload protection piece, a movable contact piece, a first terminal and a pressing assembly, the shell is provided with an installation cavity, and the overload protection piece with the static contact and the movable contact piece with the movable contact are located in the installation cavity; the first terminal comprises an input terminal and an output terminal which are mutually independent, and the input terminal and the output terminal are respectively connected with the overload protection piece and the movable contact piece; the pressing assembly is installed on the shell and located on the side, away from the overload protection piece, of the movable contact piece, and the pressing assembly can be pressed to enable the movable contact to move in the direction close to the static contact. When the movable contact is in contact with the static contact, the input terminal and the output terminal are electrically conducted; and the overload protection piece is configured to drive the static contact to be separated from the movable contact when the current flowing through the overload protection piece exceeds a set threshold value. Therefore, the key switch and the socket disclosed by the invention are simple in structure and small in occupied space.

A keyboard key structure comprising a key stem, a contact-based mechanical trigger, and a contactless analog key switch. The key stem is configured to be depressed and move along a linear path over a range of operation. The contact-based mechanical trigger is configured to activate after the key stem is depressed a threshold distance in the range of operation. In response to the contact-based mechanical trigger activating, the contactless analog key switch is configured to detect, at a sample rate, a position of the key stem between the threshold distance and an end of the range of operation after the key stem is depressed. The contact-based mechanical trigger can be a galvanic-type key switch. The contactless analog key switch can be one of an optical key switch, a magnetic key switch, or an inductive key switch.

The invention discloses a bipolar magnetic induction integrated circuit and a switch, the bipolar magnetic induction integrated circuit corresponds to a key switch, and each key switch comprises a switch body and a magnetic element; the switch body comprises a component capable of moving up and down, the bipolar magnetic induction integrated circuit is arranged on the surface of the PCB, and the magnetic induction direction of the bipolar magnetic induction integrated circuit is a vertical direction; the magnetic element is positioned above the bipolar magnetic induction integrated circuit and is arranged on the part capable of moving up and down, and the NS pole direction of the magnetic element is a vertical direction or a horizontal direction; the magnetic element moves up and down perpendicular to the magnetic induction horizontal plane of the bipolar magnetic induction integrated circuit. The bipolar magnetic induction integrated circuit is higher in anti-jamming capability, more suitable for dynamic control and high in function integration level, the bipolar Hall chip integrates a latch function (such as a latch type Hall), the state can be kept until the magnetic field is reverse, and the bipolar magnetic induction integrated circuit is suitable for accurate position memory.

A safety tool insulation resistance tester includes a handheld host housing, a working circuit board, a charger and electrodes, wherein the electrodes are semi-encircling structures; the working circuit board, its main board is composed of MCU, AD acquisition input, shaping filter input, resistance sampling input, relay switching sampling range, high voltage wiring L end, low voltage wiring E end, buzzer circuit and LCM interface, and its control board is composed of relay switching high voltage output, power switch, start / stop switch, alarm gear selection, one-button power on / off circuit, step-down and power supply circuit and charging interface circuit. Its advantages are small size, good safety, high measurement accuracy, only one person holding the tester can measure the insulation resistance of the insulating rod, the measurement is carried out automatically, and the measurement results are displayed on a large-screen LCD; in addition, the insulation resistance tester increases the measurement contact surface of the electrode, can realize the continuous sliding test of the insulating rod, and the test can completely cover the surface of the insulating rod.

The present invention discloses a handheld apparatus, including: a fan body provided with a snap-fit groove at its bottom; and a handle, detachably installed on the fan body, where the handle is provided with a locking mechanism, the locking mechanism includes a key switch, a locking portion, and an elastic member, the key switch is fixedly connected with the locking portion, and the elastic member is located between the locking portion and the handle, where the key switch is for a user to press to drive the locking portion to move downward, so that the locking portion and the snap-fit groove are unlocked; and the elastic member is configured to drive the locking portion to move upward, so that the locking portion and the snap-fit groove are locked. Through the present invention, a problem that existing fans are inconvenient to carry and have a monotonous function is resolved.

The utility model relates to the technical field of soil in-situ detection, and discloses a portable soil quality multi-parameter in-situ detection device. The device mainly comprises a controller, a connecting wire, an optical probe and a sensor. The controller is provided with a touch screen, a single-chip microcomputer circuit board, a single-chip microcomputer, an SD card, a key switch, a wireless communication control panel and a power source, and power source management, detection system control, real-time data processing, man-machine interaction, data storage and remote transmission can be achieved. The sensor comprises a soil temperature probe, a soil humidity probe, a soil conductivity probe and a soil pH probe, and can realize real-time data acquisition of soil temperature and humidity, conductivity and pH value; an annular lamp holder, a light source, a photoelectric sensor, a plano-convex lens, a light shielding plate, a light shielding boss and a light shielding ring are arranged in the optical probe, and rapid collection of soil organic matter spectrum information can be achieved. The soil in-situ detection device realizes synchronous acquisition of multiple parameters of soil, is reasonable in structural design and convenient to operate, and is suitable for popularization and application in the field of soil in-situ detection.

The embodiment of the invention relates to the technical field of battery packs, and particularly discloses an electric connector, a battery pack and an energy storage system.The electric connector comprises a first connector and a second connector, the first connector comprises a first body, a first conductive base, a second conductive base and a key switch, the first conductive base and the second conductive base are arranged on the first body, and the key switch is used for being connected with a main control system of the battery pack; the second connector comprises a second body, a first conductive seat and a second conductive seat, the second conductive seat is connected with a first electrode of the battery pack, the first conductive seat is provided with a current conducting bar, the current conducting bar is electrically contacted with the second conductive seat to form an opening area with the second conductive seat, and the second connector comprises a second body, a first conductive head, a second conductive head, an insulating ejector rod and an insulating spacer, in the butt joint process of the two battery packs, the insulating ejector rod of the first battery pack presses the key switch of the second battery pack, and the insulating spacer of the first battery pack abuts against the first conductive seat and the second conductive seat of the second battery pack for breaking and isolation. According to the embodiment of the invention, contact sparking caused by connection of adjacent battery packs can be reduced.

The invention discloses a keyboard backlight circuit integrated with a key detection function, a keyboard backlight circuit driving method and a key input device.The keyboard backlight circuit comprises a plurality of scanning lines and a plurality of output lines, each scanning line is provided with a main line and a plurality of branch lines which are connected with the main line in parallel, the main line is provided with a first voltage end, and the main line is provided with a second voltage end; the branch line is provided with a second voltage end, a light-emitting diode and a first resistor which are connected in series are sequentially arranged between the connection position of the branch line and the main line and the second voltage end, and the light-emitting diode enables current to be conducted towards the first resistor in one direction; the output line is provided with a voltage output end and a plurality of switching circuits connected with the scanning lines respectively, the switching circuits are connected with the portions, located between the light-emitting diodes and the first resistors, of the scanning lines, and the switching circuits comprise key switches. The switch circuit is connected in series in the keyboard backlight circuit, so that the keyboard backlight effect is achieved, and the functions of key detection and ghost key prevention can be achieved at the same time.

The utility model discloses a wake-up conduction structure used on a key switch, comprising a guide core, a moving plate which is arranged on the side edge of the guide core and is elastically bent downwards as a whole, and a static plate arranged below the moving plate, at least one convex edge is formed on the side edge of the guide core, the moving plate comprises at least one moving plate support arm which transversely extends towards the convex edge, and the static plate is arranged below the moving plate. The movable piece support arm is driven by the protruding edge to be in contact with or separated from the static piece under the acting force that the guide core is pressed by external force, and the movable piece and the static piece are electrically connected with an external circuit. The device can be applied to shaft bodies such as a Hall magnetic shaft and an optical axis, the application range is wide, the conduction structures of the shaft bodies such as the Hall magnetic shaft and the optical axis are awakened to realize signal transmission when the device is pressed, the conduction structures of the shaft bodies such as the Hall magnetic shaft and the optical axis are not interfered when the device is not pressed, and the shaft bodies such as the Hall magnetic shaft and the optical axis enter dormancy; therefore, the purpose of saving the electric quantity of the wireless keyboard is achieved, power consumption is reduced, the service life of the wireless keyboard is prolonged, and people can use the wireless keyboard conveniently.

Provided in the present invention are a rail transit train control method and apparatus. The method comprises: when the communication of a train is interrupted, acquiring a train movement direction, axle counting information, turnout information and a planned travelling destination, wherein the planned travelling destination is determined on the basis of passenger flow information corresponding to the next station of the train and a control instruction of an ATS center; determining train positioning information on the basis of at least one of the axle counting information and the turnout information, and the train movement direction; and determining a target authority on the basis of a plurality of device states between the train positioning information and the planned travelling destination, so as to control an operation level mode of the train, wherein the plurality of device states comprise a section state, a signal machine state, a staff protection key switch (SPKS) button state of a signal system, a screen door state, an emergency button state and a flood gate state. The method in the present invention can improve the automatic operation efficiency and operation safety of a train, thereby shortening the rescue time of an FAO system in case of a fault, and having high usability.

The utility model discloses a Hall sensor magnetic shaft switch, which comprises a base detachably mounted on a keyboard circuit board, a cover covering the base, a reset spring sleeved in the middle of the base, and a guide core of which the upper end penetrates through the cover and the lower end is pressed against the reset spring, the cover plate is arranged at the lower end of the base; the switch circuit board is arranged on the cover plate; the Hall element is arranged on the cover plate and is electrically connected with the switch circuit board; the at least two groups of conduction terminals are electrically connected with the switch circuit board and integrally extend downwards to be conducted with the keyboard circuit board; according to the utility model, the Hall element is arranged inside the key switch, so that the key switch can be freely plugged on the keyboard circuit board and can be freely replaced by other key switches, the adaptation degree of the keyboard is improved, the use of people is facilitated, the requirements of people for different key switches are met, and the use experience of people is ensured.

The utility model relates to an intelligent sucker which is characterized in that a handle is fixed on a base plate, and the base plate is a circular sucker; the connecting portion of the handle and the chassis and the handheld portion of the handle are of a mutually-communicated space structure, side covers are arranged on the two sides of the handheld portion, a driving power source is arranged in the space on one side of the handle, an electromagnetic valve is arranged in the space on the other side of the handle, and a motor, a pump, a one-way valve, a four-way joint and a control circuit board are arranged on a shell of the handheld portion of the handle. The four-way joint is respectively communicated with the exhaust hole of the chassis, the exhaust hole of the pump, the air inlet of the electromagnetic valve and the detection of an air pressure sensor in the control circuit board; and the upper cover is covered on the handheld part shell of the handle. The intelligent suction cup has the advantages that the intelligent suction cup in a standby state can be converted into a working state at any time through the time delay circuit and the key switch; and 2, automatic shutdown can be realized through the time delay circuit.

In a system comprising a user terminal and a computation device having an execution area for performing a computation, the user terminal generates a first secret key and a first public key as well as a second secret key and a second public key, uses the second public key to encrypt the first secret key using a homomorphic encryption scheme, and generates a switch key. The execution area stores the switch key acquired from the user terminal. The user terminal uses the first public key to encrypt a plaintext using the homomorphic encryption scheme and generates a ciphertext, and the execution area executes a computation process on the basis of the ciphertext acquired from the user terminal. Additionally, the execution area uses the switch key to execute a key switch process on the result of the computation process, and the user terminal acquires the result of the key switch process executed by the execution area and uses the second secret key to decrypt the result.

The utility model discloses a sound-generating structure for a key switch, comprising a base, a guide core arranged on the base, a sound-generating member movably arranged between the guide core and the base, and an elastic member having one end fixed to the lower surface of the guide core and the other end fixed to the sound-generating member, a sound-generating limiting portion is correspondingly formed on the lower surface of the guide core to limit the two sides of the sound-generating member for sounding, at least one sound-generating limiting groove is formed in the middle of the sound-generating limiting portion, and the sound-generating member acts on the sound-generating limiting groove. The sound-generating structure for a key switch provided by the utility model realizes a pressing sound-generating effect, the various structures cooperate closely, the action is smooth, fast, stable and precise, the structure has a long service life, the sound-generating effect is good, and the sound-generating effect will not be reduced after long-term use, thereby improving the user experience.

The utility model discloses a local control device matched with pneumatic switch valve DCS remote control, which comprises a field valve, a remote control room and a local remote control box, and a local control loop, a change-over switch for local / remote switching and an operation switch for valve opening and closing control are arranged in the local remote control box. The operation switch is connected with the DCS control system in parallel, the change-over switch carries out line switching between the local control loop and the DCS control system, the local remote control box is an explosion-proof junction box with an installation stand column, and the change-over switch and the operation switch are key switches with keys. According to the utility model, two kinds of change-over switches, namely the change-over switch and the operation switch, are integrated, so that the change-over switch can be conveniently matched with an electromagnetic valve circuit of a pneumatic switch valve, an on-site switch control function is added, misoperation of unauthorized personnel can be prevented, and on-site opening / closing operation of a plurality of valves can be realized.

The utility model discloses a multifunctional combined tool which comprises a lead screw transmission mechanism, a gear transmission mechanism and a key switch. The screw rod transmission mechanism comprises a screw rod, a nut gear and a bearing seat; the device further comprises a rotary output gear, and the rotary output gear is connected with the gear transmission mechanism and is driven to rotate. The adjusting unit is used for adjusting the stroke of the lead screw and / or adjusting the positive and negative rotation of the motor and / or the rotating speed of the motor; the function switching unit is used for switching a nut riveting mode, a rivet mode and a screwdriver and electric drill mode; the switch unit triggers the gear transmission mechanism; and the circuit control unit is connected with the function switching unit, the adjusting unit, the switch unit, the motor and the key switch. The multifunctional screwdriver is simple and small, and can be combined with a rivet nut kit, a rivet kit and a screwdriver bit to form a multifunctional professional tool.

The utility model provides a key switch and a keyboard, and belongs to the technical field of electronic equipment. The key switch provided by the utility model comprises a shell, and a stroke assembly and a signal assembly which are accommodated in the shell, the stroke assembly comprises a shaft core, a shaft grid which is connected with the shaft core and is separated from the shaft core, and an elastic piece which is accommodated in the shell and enables the shaft core and the shaft grid to be in a normal contact state, and the contact surface of the shaft core and the shaft grid is an arc-shaped surface; the signal assembly comprises a trigger part and an induction part, the trigger part is installed on the shaft grid, the shaft core drives the shaft grid to move and drives the trigger part to move in the direction close to the induction part, and when the distance between the trigger part and the induction part reaches a preset threshold value, an induction signal is triggered. In order to solve the problem that in the prior art, the contact surface of the shaft core and the shaft grid is a plane, and the shaft grid can be driven to tilt when the shaft core tilts laterally, the contact surface of the shaft core and the shaft grid is adjusted to be the arc-shaped surface, the shaft grid cannot be driven to tilt when the shaft core tilts laterally, jamming caused by friction between the shaft grid and the lead column is avoided, and use experience is improved.

The present invention discloses a button linkage automatic reset shower mechanism and shower faucet, comprising a body and a control mechanism, wherein the body is provided with a water inlet channel, at least two water outlet channels, a main valve core, and a button switch valve core arranged in one-to-one correspondence with the water outlet channels; the control mechanism comprises a button module connected in one-to-one correspondence with the button switch valve core, a driving member connected to the main valve core, and a linkage rod slidably connected to the body; the button module is provided with a first elastic reset member and a first hook; the linkage rod is provided with a second hook and a second elastic reset member for driving the second hook to engage with the first hook of the pressed button module; the driving member is movably connected to one of the button modules; when the driving member drives the main valve core to block the water inlet channel, the button module connected thereto is driven to drive the button switch valve core to open the corresponding water outlet channel. The present invention allows water to flow out from a specific water outlet channel first, thereby preventing the user from being showered by mistake.

The utility model relates to the technical field of keyboards, in particular to a key switch assembly capable of triggering two instructions, which comprises a shaft body surface shell serving as a carrier of the whole assembly and a shaft body bottom shell clamped on the shaft body surface shell, and a side shaft assembly for triggering a new instruction in an up-down pressing mode is arranged on the shaft body surface shell. The side shaft assembly comprises a fixing column fixedly connected to the shaft body face shell, a spring column is connected to the fixing column in a sliding mode, a side face key cap is fixedly connected to the transmission frame, a side face reset spring used for resetting the side face key cap is fixedly connected between the transmission frame and the shaft body face shell, connecting columns are fixedly connected to the two sides of the transmission frame, and conductive silica gel is fixedly connected to the bottom ends of the connecting columns. Wherein one conductive silica gel is in contact with the pcb to conduct an electrical signal. Under the condition that the main parts of the shaft body are the same, the side surface part of the shaft body is adjusted to be a structure capable of adapting to an up-and-down pressing mode, so that an operation mode is added to an original switch structure which only has a single pressing instruction.

The utility model discloses a UPS (Uninterrupted Power Supply) starting device and an energy storage device. The UPS starting device comprises a UPS body, the starting mechanism is used for externally applying external force to control the UPS body to be started and stopped; and the fixing device is used for limiting and fixing the UPS body and the starting mechanism. The starting mechanism comprises an electromagnetic lock and a key switch used for controlling the electromagnetic lock, the electromagnetic lock comprises a lock body and a spring bolt, and when the key switch is pressed, the spring bolt extends out of the lock body to press a control button on the surface of a shell of the UPS body, so that the UPS body is started or closed. By adding the electromagnetic lock device, the starting of the UPS body is not influenced by the structural layout due to the position problem of a switch key of the UPS body, and the UPS body can be placed at a redundant space position in the energy storage box, so that the problem of front space layout of electrical parts of the energy storage equipment is reduced.

The utility model discloses a lightweight flywheel encoder with switchable hand feeling, which comprises a support and an encoder module arranged on the support, and further comprises a roller for triggering the encoder module to generate signals, a hand feeling piece is fixed at the axis of the roller, and a triggering element for triggering the encoder module to generate electric signals is further arranged on the hand feeling piece. The support is further provided with a key change-over switch and a hand feeling change-over piece. When the key change-over switch is pressed, the damping of the hand feeling change-over piece acting on the hand feeling piece can be adjusted. Damping of the hand feeling switching piece to the hand feeling piece is easily adjusted through the key change-over switch, instant switching of hand feeling is achieved, different user requirements are met, meanwhile, the structure is light, operation is easy and convenient, and user experience and flexibility and applicability of equipment are improved.

The utility model discloses a combined structure key and an electronic product, and the combined structure key comprises a housing which is provided with a key via hole; the circuit board assembly is arranged on the shell and comprises a plurality of key switches corresponding to the key via holes; the key part is arranged in the key via hole and comprises a first key assembly and a second key assembly, the first key assembly is made of a flexible material, the second key assembly is made of a hard material, and the second key assembly is arranged on the first key assembly and combined into a whole; therefore, when the second key assembly is pressed, the first key assembly can be driven to trigger the key switch. The first key assembly and the second key assembly are combined to form the integrated key, the key can be normally matched with the key switch by utilizing the material characteristic of a flexible material, and meanwhile, the assembling strength of the key structure can be sufficient by utilizing the material characteristic of a hard material, so that the design of a skirt edge can be omitted, and the cost is reduced. And the problems of dead key, loose abnormal sound, no key linkage function and the like caused by insufficient thickness space are avoided.

The utility model belongs to the technical field of automobile keys, and particularly relates to an automatic reset automobile key switch, which comprises a shell internally provided with a cavity; the pressing piece is arranged in the shell and can slide in the cavity; the locking assembly comprises a reset assembly arranged at the bottom of the pressing piece and used for providing reset, a contact column arranged at the bottom of the reset assembly, a movable contact piece arranged at the bottom of the contact column and a static contact piece arranged at the bottom of the cavity; the contact assembly comprises a static contact piece arranged at the bottom of the cavity and a movable contact piece arranged at the bottom of the pressing piece; after the static contact piece and the movable contact piece are in contact, the switch is turned on. The beneficial effects of the utility model are that through the arrangement of the locking assembly and the contact assembly, the opening of the switch needs a clear pressing action, the automatic reset function avoids the problem of mistaken touch caused by forgetting to lock, and the safety and convenience of use are improved.

The invention discloses a key shaft body with an adjustable pressing stroke, and the key shaft body comprises a housing, and the housing comprises a pedestal and a top cover which are matched with each other. The switch assembly is arranged on the base, and when the switch assembly is triggered, a key switch signal is output; the key shaft core is provided with a positioning part; the key shaft core is movably arranged in the shell, and the switch assembly is triggered when the key shaft core moves relative to the base; the stroke adjusting piece comprises a plurality of stroke abutting areas with different horizontal heights; the stroke abutting area is arranged in the shell. The positioning part is respectively matched with a plurality of stroke stopping areas with different horizontal heights and is used for positioning the key shaft core to different horizontal heights so as to adjust the pressing stroke of the key shaft body; the key shaft body, the pressing stroke and the trigger response speed can be adjusted and controlled, and the adjusting mode is simple and convenient.

A keyboard device includes a key switch corresponding to a character, a plurality of touchpads, a memory to store mapping information, a communication interface to communicate with an information processing apparatus, and circuitry. In the mapping information, a code to be output to the information processing apparatus is set for each combination of operations on the plurality of touchpads. When a combination of operations on the plurality of touchpads is received, the circuitry identifies a code corresponding to the combination of operations on the plurality of touchpads based on the mapping information and outputs the identified code to the information processing apparatus via the communication interface.

The invention discloses a portable drowning rescue communication terminal and a drowning detection method.The portable drowning rescue communication terminal comprises a main shell, the main shell is internally provided with a first cavity and a second cavity, the first cavity is internally provided with an antenna module, the second cavity is internally provided with a lithium battery and a PCB, and the lithium battery is connected with the PCB. The periphery of the first cavity is covered with a radome, the periphery of the second cavity is covered with an upper cover, and the front face of the upper cover is provided with an audible and visual alarm and a drowning sensor. The PCB is provided with a power supply module, an MCU module, and a key switch, an indicating lamp, a six-axis acceleration sensor, a GPS module and an SIM card which are electrically connected with the MCU module, and the audible and visual alarm, the drowning sensor and the antenna module are electrically connected with the MCU module. According to the portable drowning rescue communication terminal and the drowning detection method provided by the invention, an accurate real-time drowning position can be provided for a rescue party in time, and the rescue efficiency and the success rate are improved.

The invention discloses a battery pack activation control device, a power supply system and engineering mechanical equipment. The control device comprises a battery management system, a charger, a time delay relay and a control module, the battery management system is connected with the battery pack and the charger; the control module is connected with a coil and a contact of the time-delay relay, and the contact of the time-delay relay is further connected with the battery management system. On the basis of an existing charging activation circuit of the battery pack, the control module and the delay relay are added to indirectly activate the discharging function of the battery pack, hardware circuit design is reduced, and the problem that activation discharging of an external key switch is greatly affected by a hard wire is solved.

The invention relates to the technical field of fire protection equipment, and discloses a single-arm fire protection robot which comprises a mechanical arm, one end of the mechanical arm is connected with a rotating joint, one end of the rotating joint is provided with a manipulator, the manipulator is fixedly provided with a fixed shell, and a positioning feeler lever assembly, a knob opening and closing assembly and a clamping jaw assembly are integrally assembled in the manipulator. According to the invention, the knob opening and closing assembly, the positioning feeler lever assembly and the clamping jaw assembly carry out point position calibration setting through the tail end of the feeler lever, the knob opening and closing assembly and the clamping jaw assembly act around the positioning point of the positioning feeler lever assembly, and when the point position setting of the movement of the manipulator is carried out, the micro-motion point position setting required for the key switch can be reduced; according to the technical scheme, the situation that the difference between pressing force and clamping force in key operation is large due to errors generated by operation of the mechanical arm can be reduced, meanwhile, when an operator conducts point position checking, the tedious degree of point position checking can be reduced, and later maintenance work is better facilitated.