100results about How to "Lock fast" patented technology

The invention discloses an ultrasonic scalpel. The ultrasonic scalpel comprises a handle, a middle rod, a rear bending connecting part, a rigid cutter bar, a cutter head and a front bending connecting part, wherein the rear bending connecting part is arranged between the handle and the middle rod; the rigid cutter bar is connected with the middle rod; the front bending connecting part is arranged between the rigid cutter bar and the cutter head; a front bending part and a rear bending part comprise a plurality of joint sheets and four transmission steel wires for connecting the plurality of joint sheets in series; the middle rod is provided with an accommodating cavity; a piezoelectric transducer is arranged in the accommodating cavity; a tail mass block is positioned at the rear end of the piezoelectric transducer; the middle rod is connected with the rigid cutter rod through an ultrasonic amplifier; and a locking device for maintaining the bending angle after the front bending connecting part and the rear bending connecting part are bent is arranged on the middle rod. According to the ultrasonic scalpel, the tail mass block is arranged on the rear part of the piezoelectric transducer, so the defect of ultrasonic energy attenuation caused by the bending parts is overcome and the cutting effect is guaranteed.

An embodiment of the invention discloses a method and a system for locking an offset point of a light modulator. The method for locking the offset point of the light modulator comprises the following steps of acquiring outputting signals of an outputting end of the light modulator and sign bits of modulating signals generated by a modulating signal generator of an inputting end of the light modulator; multiplying the outputting signals and the sign bits and acquiring the cumulative sum of the arithmetic product; and performing locking control on a direct-current offset point of the light modulator according to fitting curve slope corresponding to the cumulative sum and phase correlation of the direct-current offset point of the light modulator on a modulating curve. According to the embodiment, the offset point can be tracked and locked no matter where the offset point is positioned on the modulating curve.

The invention belongs to the fitting field of asphalt production equipment, and particularly relates to a connecting flange for asphalt conveying pipelines. The connecting flange for asphalt pipelines is characterized by comprising a left flange and a right flange cooperatively used with the left flange, wherein an annular sealing bulge is arranged on the end face of the left flange; the peripheral face of the annular sealing bulge is an inclined surface; a sealing groove matched with the annular sealing bulge is formed in the end face of the right flange; a seal ring is arranged at the bottom of the sealing groove. The flange disclosed by the invention has a good practical sealing effect; moreover, the locking mode between the flanges is improved, and the flanges are convenient for quick locking connection, so that the installation time is shortened, and the installation efficiency of workers is improved.

The invention discloses a clock delay method, a clock delay device, a delay-locked loop and a digital clock management unit. The clock delay method comprises the following steps: step 1: delaying an input clock for Ti by a delay line to obtain an output clock; step 2: comparing the input clock with the output clock, returning to the step 1 to delay the input clock for (Ti+Tx) / 2 by the delay line again if the input clock is lagged behind the output clock, returning to the step 1 to delay the input clock for (Ty+Ti) / 2 by the delay line if the input clock is ahead of the output clock, and until the input clock is aligned with the output clock, outputting the output clock aligned with the input clock. According to the invention, by the technical scheme, a dichotomous successive approximation mode is adopted to realize alignment; N clock periods are required at most; under the condition with larger difference between the input clock and the output clock, a DLL (Dynamic Link Library) locking speed is improved and the working speed of a chip system is improved.

The invention discloses a phase-locked loop low in stray and quick in locking. The phase-locked loop eliminates strays caused by delayed mismatching of a phase frequency detector of a traditional charge pump phase-locked loop and current mismatching of the charge pump, and enables interference of adjacent channels of a radio communication transceiver system to be greatly reduced. Through adoption of a Dummy sampler circuit, reference strays are reduced to a great extent. Moreover, the locking speed can be increased through increases of the current of a phase-locked loop charge pump, so that the overall performance of the phase-locked loop can be improved comprehensively.

The present invention relates to a phase locked loop bandwidth switching circuit and method used for wireless communication system. Said circuit includes timer control circuit and trigger circuit, when wireless communication equipment is switched from one channel to another channel, trigger circuit setting charge pump current as heavy current to obtain large loop bandwidth and quick lockout speed, to make loop circuit frequencies of printout rapid reaching target locking frequency, through system required locking time, timer control circuit recovering charge pump current as low current, due to loop bandwidth reducing, outband phase noise changed better, receiving end neighboring trace signal selectivity and transmitting terminal neighboring trace power leakage rejection ratio all relatively changed better.

The disclosed oscillator consists of two parts: delay cells with technique error compensation connected in ring, and control circuit for digital-analog composite signal (scheme 1); or common delay cells connected in ring, and control circuit for digital-analog composite signal with technique error compensation (scheme 2). Based on common difference inverter, the scheme 1 adds one or more MOS tubes on load tube to constitute the delay cells in order to compensate technique error. In scheme 2, delay cells are common; and control circuit for digital-analog composite signal possesses constant current source controlled by one or more ends of technique error compensation.

The invention discloses a physical layer adaptive ACM synchronization method based on satellite communication, comprising an ACM physical frame sending module and an ACM physical frame synchronous receiving module, wherein the ACM physical frame sending module and the ACM physical frame synchronous receiving module are connected in series through a satellite channel. The physical layer adaptive ACM synchronization method disclosed by the invention has the advantages of having a simple structure and high SNR estimation accuracy under low noise, effectively reducing the frequency offset after frequency compensation, having a high clock signal locking speed, being able to perform stable tracking and having relatively high practicability.

The application discloses an optical module and a detection circuit thereof. The detection circuit comprises a sampling module which comprises a first potentiometer used for converting sampling current into sampling voltage; an amplification module which is coupled with the output end of the sampling module and used for amplifying the sampling voltage; and an analog-to-digital conversion module which is coupled with the output end of the amplification module and used for converting the amplified sampling voltage into a data signal to detect. The sampling module of the detection circuit is provided with the potentiometer which can adjust resistance of the sampling module so that responsibility of different modulators can be adapted, locking speed of the modulators can be enhanced, left and right jump of locking points and errors of the locking points can be prevented, and area occupied by a PCB can be reduced.

According to a locking device for bridge structure shock absorption control, three fan-blade-shaped piston pieces are overlapped to form a piston of the device, rubber pieces are adhered to the outer layers of the three fan-blade-shaped piston pieces, the piston is fixed to a pull rod, the piston and the pull rod are arranged in an oil cylinder filled with silicone oil, the oil cylinder is thereby divided into three portions through the left piston piece and the right piston piece, and the pull rod drives the piston to conduct longitudinal displacement and torsional displacement. The viscous force produced when the silicone oil passes through orifices controls the movement of the pull rod, the left piston piece and the right piston piece are simultaneously locked, and the locking strength of the device is enhanced. Meanwhile, hole diameter automatic adjusting systems are arranged inside the left piston piece and the right piston piece respectively, and each hole diameter automatic adjusting system is composed of a drainage hole, one of the orifices, two springs and a trapezoid steel block, and the longitudinal locking speed of the device is improved through the pressure intensity difference caused by the difference of the flow velocities of liquid on two sides of the trapezoid steel block when the piston moves. Furthermore, the fan-blade-shaped piston pieces of the device stir the silicone oil to flow when torsional displacement occurs, and the force exerted by an earthquake on a bridge structure is reduced through energy produced by the earthquake in the viscosity dissipation portion of the locking device.

The invention discloses a quick-locking phase-locked loop frequency synthesis device. The quick-locking phase-locked loop frequency synthesis device includes a frequency preset circuit, a temperatureswitch array, a dynamic loop bandwidth control circuit, a voltage controlled oscillator, a dual mode preset frequency divider, a digital processor, a nonvolatile memory, a phase frequency detector, acharge pump and a loop filter. The quick-locking phase-locked loop frequency synthesis device can modify the defects of the prior art, and can improve the locking speed and the control accuracy.

The invention provides a phase-locked loop. The phase-locked loop comprises an active filter, a voltage-controlled oscillator, two phase detectors, a charge pump and a digital / analogue converter, wherein the voltage-controlled oscillator generates an oscillation signal according to a control signal provided by the output end of the active filter; a first phase detector generates a phase difference signal according to a reference signal and a feedback signal corresponding to the oscillation signal; the charge pump provides a charging current to a first input end of the active filter according to the phase difference signal; a second phase detector generates a digital reference voltage according to the phase difference of the reference signal and the feedback signal; and the digital / analogue converter converts the digital reference voltage into an analogue reference voltage, and provides the analogue reference voltage to a second input end of the active filter.

The invention discloses a bidirectional rotary electric cutter rest. The bidirectional rotary electric cutter rest comprises a box body, a cutter head, a gear shaft, a rotary shaft, a roller carrier, an outer gear ring, an inner gear ring which is sleeved on the rotary shaft, a motor which can rotate forwardly and reversely, and a clamping gear ring which can be meshed with the inner gear ring and the outer gear ring, wherein a gear is sleeved on the gear shaft; the motor drives the gear shaft to rotate; the gear is meshed with the roller carrier; the roller carrier is supported on the rotary shaft rotatably; the clamping gear ring is moveably sleeved on the rotary shaft through a key; the inner gear ring is fixedly connected with the cutter head; the outer gear ring is fixedly connected with the box body; the bidirectional rotary electric cutter rest also comprises a primary positioning pin; the back end surface of the clamping gear ring is a step plane; a roller which can roll along the back end surface of the clamping gear ring is installed inside the roller carrier; a key slot which is matched with the key is formed on the roller carrier; and a plurality of primary positioning slots which are matched with the primary positioning pin are formed on the clamping gear ring. The bidirectional rotary electric cutter rest is high in locking speed and locking stability and low in noise.

The invention relates to the technical field of injection molding machines, and particularly relates to a movable mold quick locking and opening device for an injection molding machine, which comprises a base. A vertical rod is fixedly installed on the base through a bolt, a sliding rod is fixedly installed on the vertical rod through a bolt, a controller is fixedly installed on the vertical rod through a bolt, and a fixed mold fixing base and a movable mold fixing base are installed on the sliding rod in a sliding mode. The device has the beneficial effects that the fixed mold and the movablemold can be quickly locked by utilizing the clamping device, therefore, the traditional mode of manually screwing a bolt to lock the mold is effectively replaced, the locking speed of the mold is increased, the occupied mold changing time is reduced, the device can use a mold core push rod, a mold opening push rod and an ejector pin push rod for cooperatively opening the mold, the traditional manual mold opening is thus replaced, the production efficiency is improved, the device can adapt to different molds by installing the corresponding ejector pins and mold cores, the universality of automatic mold opening of the device is improved, and the production flexibility of a production line is guaranteed.

The invention discloses a phase-locked loop of a fast-locked charge pump, which includes a phase-locked loop composed of a frequency and phase detector, a charge pump, a low-pass filter, a voltage-controlled oscillator and a frequency divider, wherein the voltage-controlled The oscillator includes a voltage conversion current module and a current-controlled oscillator module; an initialization circuit that generates an initial oscillation frequency is added to the voltage-controlled oscillator in the phase-locked loop; the initialization circuit includes a symmetrical transconductance operational amplifier and a A transistor circuit connected to the switch of the low pass filter, and a transmission gate TG and an inverter INV connected across the low pass filter. The present invention adds an additional initialization circuit to the voltage-controlled oscillator, which can speed up the locking speed of the phase-locked loop, thereby reducing the locking time of the phase-locked loop. At the same time, the initialization circuit has a simple structure, fewer transistors, and does not significantly increase the overall charge Layout area of ​​the pump phase-locked loop.

The invention relates to an MPO / MTP type optical fiber connector automatic fastening and grinding clamp which comprises an upper clamp and a base. The upper clamp comprises a fixed disc (1) and multiple locking assemblies, the fixed disc (1) is provided with multiple inserting core holes (5) where optical fiber connectors are inserted, the base is provided with multiple pressure sensors, and the positions of the optical fiber connectors are determined according to pressure transmitted from the optical fiber connectors in the inserting core holes (5). The clamp further comprises an electric control module, the locking assemblies are controlled for locking action according to signals detected by the pressure sensors, the locking action is performed by a micro motor (6), and a rapid and accurate locking effect can be achieved. The locking speed for the optical fiber connectors is higher, and the optical fiber connectors can be locked by the micro motor (6) only by being placed into the inserting core holes (5) and pressing the optical fiber connectors corresponding to a same pull rod (3) though two fingers.

The invention relates to a rapid-locking low-jitter clock data recovery circuit based on double loops, relates to the field of a microelectronic chip, and aims to solve the problem that an existing double-loop clock data recovery circuit cannot simultaneously have a high locking speed and small jitter. According to the invention, a band switching circuit, a multi-band VCO (Voltage Controlled Oscillator), a resistance voltage division circuit, an either-or circuit and a low-pass filter form a frequency-locked loop; the either-or circuit, the low-pass filter, the multi-band VCO, a BBPD (Bang-Bang type Phase Discriminator) and four charge pumps form a phase-locked loop; the band switching circuit is used for outputting a band control field and a loop selection signal according to an output clock clk0 of the multi-band VCO and a reference clock clk_ref; the resistance voltage division circuit is used for carrying out voltage division on a supply voltage vdd, and the voltage division outputend of the resistance voltage division circuit is connected with the frequency-locked loop input end of the either-or circuit; and the either-or circuit is used for gating the frequency-locked loop or the phase-locked loop according to the loop selection signal. The rapid-locking low-jitter clock data recovery circuit is applicable to clock data recovery.

The invention belongs to the technical field of welding clamps, and particularly relates to a self-adaptive positioning combination clamp for welding curved-surface panels. The self-adaptive positioning combination clamp comprises a first rotary supporting rod, a second rotary supporting rod, a first locking bearing, a second locking bearing, a ball head, a torsional spring, a limiting spring, a clamping spring, a spring stop dog, a driving supporting seat, a driven supporting seat, an angle seat, a bottom plate, a locking device, a power device, a coupling device, a fixed rotary shaft and a clamping device. Workers opens the clamping device, the welded curved-surface panels are placed on the clamp, the rotary supporting rods rotate around the fixed rotary shaft, the torsional spring is automatically adjusted, and a balance state is achieved; locking is carried out through the power device, then clamping is carried out, and welding is started; and the welding is completed, the clampingdevice is opened, the curved-surface panels are taken out, the rotary supporting rods are automatically adjusted according to different curved-surface panels to adapt to the welding of the curved-surface panels with different shapes, the time of designing and producing the welding clamp is shortened, the clamp cost is reduced, and the production cycle is shortened.

The invention belonging to the field of the instrument design discloses a halogen lamp driving circuit of an infrared polarization therapeutic apparatus. The driving circuit is composed of an AC-DC voltage stabilization module, a DC-DC voltage stabilization module, a reference voltage circuit, a sampling circuit, a comparison circuit, and an integral circuit. According to the driving circuit, theintegral circuit is formed by cascaded connection of two-stage integral units, so that the locking speed of an amplitude stabilization loop is increased. With introduction of one group of negative power supplies, the amplitude stabilization loop of the driving circuit is easy to lock, so that the output voltage range of the driving circuit is extended substantially and the driving power of the high-power halogen lamp is enhanced; and the output voltage range is 0 to 15V and the 150-W halogen lamp can be driven with full power. The infrared polarization therapeutic apparatus designed by using the halogen lamp driving circuit is superior to the same kind of foreign instruments in terms of core indexes like the output optical power and polarization degree at a leading level.

The disclosed oscillator consists of two parts: delay cells connected in ring, and control circuit for digital-analog composite signal (scheme 1); or delay cells connected in ring, and a digital control circuit (scheme 2). In scheme 1, delay cell is a common difference inverter; the control circuit for digital-analog composite signal is composed of a set of constant current sources with different currents and an active load MOS tube. In scheme 2, the digital control circuit is same as the part of digital control circuit in scheme 1; load tube of delay unit is composed of multiple pairs of load tube. Being controlled by digital signal control circuit, one pair of load tube is in use for presetting frequency or coarse adjusting frequency; being controlled by analog signal, another pair of load tube is in use for adjusting frequency accurately. The invention is applicable to modern communication, digital circuit, and other electronic information processing system.

The present invention discloses an I-type phase-locked loop with low reference spur and rapid locking. The I-type phase-locked loop with low reference spur and rapid locking comprises a phase frequency detector with saturation, a lock detector, a sampling-hold, a voltage-controlled oscillator, a frequency divider circuit, a loop filter and a control switch. The I-type phase-locked loop with low reference spur and rapid locking adds the sampling-hold to allow the circuit of the I-type phase-locked loop to greatly reduce reference spur of output signals to greatly reduce interference of adjacentchannels of a wireless communication transceiver system; and moreover, the I-type phase-locked loop with low reference spur and rapid locking employs the phase frequency detector with saturation andthe lock detector circuit to improve the locking speed of a phase-locked loop circuit and improve the whole performances of the loop of the phase-locked loop.

The invention discloses a diaphragm gas meter and a method and mechanism for locking motion of the diaphragm gas meter. The mechanism comprises a driving mechanism and a pin rod; the driving mechanism is used for driving the pin rod to change position in space, in the position changing process of the pin rod, the pin rod can provide hindering for motion of a motion transmission system of the diaphragm gas meter, and the hindering is used for forcing the motion transmission system to stop motion. The method is a locking method for the mechanism, and the diaphragm gas meter comprises the mechanism. The gas meter, the locking method and the locking mechanism provided in the method have the advantage of being simple in scheme, the gas meter adopting the method and the locking mechanism is high in metering precision and high in pipeline locking reliability, and fluid flow resistance of the corresponding gas pipeline can be effectively reduced by adopting the locking method and mechanism.

The invention discloses a delay phase-locked loop circuit having a start control function. The delay phase-locked loop circuit having the start control function comprises a phase detection sub-circuit, a voltage controlled delay chain, a first-order filter capacitor and a start control sub-circuit. The start control sub-circuit initializes control voltage and the control voltage is within the regulating range of delay control voltage of the voltage controlled delay chain. The phase detection sub-circuit regulates the value of the control voltage in accordance with the phase relationship between a reference clock and a feedback clock of the voltage controlled delay chain. The regulated control voltage serves as delay control voltage of the voltage controlled delay chain after filtered through the first-order filter capacitor for controlling the voltage controlled delay chain. According to the delay phase-locked loop circuit having the start control function, proper control voltage is set at the beginning of the working of the circuit, the delay of the voltage controlled delay chain on the reference clock is in half of the regulating range, the delay range provided by the voltage controlled delay chain is made full used, the locking speed of an entire system is accelerated, and meanwhile the chip area is not significantly increased.

The invention provides a window door locking device. The window door locking device comprises a locking structure and an operating device, wherein the locking structure comprises a fixed clamping ring, a pin shaft, a spring, a pin shaft seat, a stirring block and a first pin, and the operating device comprises a profiled connection rod, a second pin, an installation boss, an operating handle and athird pin. By means of the window door locking device, reliable locking can be provided for a window door in an open state, the window door is guaranteed not to unhook in driving with the window being open, and by means of the newly-designed window door locking structure, the fact that the window door locking device has the advantages of being rapid in locking, quick in relieving, reliable in locking, easy to operate and the like can be achieved.