100results about How to "Lock fast" patented technology

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 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 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.

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 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 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 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.