292 results about "Impulse generator" patented technology

The invention is suitable for the technical field of power system high-voltage electrical equipment test, and provides a high-voltage circuit breaker direct test loop parameter setting method based on a particle swarm optimization algorithm, and the method comprises the steps: enabling a three-phase direct test loop to be equivalent to a single-phase loop according to symmetry, and enabling a transformer, an electric reactor, a power grid or an impact generator to be equivalent to an inductor and a voltage source; establishing an equation set according to the KCL, the KVL and element characteristics; performing nondimensionalization by using the voltage and current standard values and the conversion relation between the time domain and the angle domain to obtain a dimensionless equation; sorting to obtain a differential equation of per unit values of voltages at two ends of the circuit breaker and dimensionless parameters; and constructing an optimization search space and value function by taking the dimensionless parameters as decision variables of a particle swarm optimization algorithm, and operating the algorithm for multiple times to obtain the optimal dimensionless parameters so as to complete loop parameter setting. According to the scheme, test loop parameter setting can be automatically completed, manual debugging is reduced, the setting efficiency and precision are improved, and it is guaranteed that a circuit breaker test result meets the standard.

The invention relates to a device for performing electric field treatment on a digestive tract. The device comprises a catheter, a support body, an electrode array film and a pulse generator, the pulse generator comprises a current sensor for sensing current flowing through the electrode pair; in the initial time period, the voltage amplitude of the back pulse in the first sequence of pulse waves is larger than the voltage amplitude of the front pulse, and when the current sensor senses that the current is equal to or exceeds the lower limit value IS (MIN) of the set range, the absolute value US of the voltage amplitude of each pulse in the second sequence of pulse waves is equal in the next time period. The amplitude of the output voltage of the pulse generator is controlled through feedback of the current sensor, and the therapeutic instrument is safer for a human body during treatment.

A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

A high frequency chest wall oscillation therapy system includes an air pulse generator. The air pulse generator includes control circuitry and a fluid chamber carrying a fluid. A motor is configured to generate compression and expansion of the fluid in the fluid chamber to generate pressurized fluid. A pressure sensor detects a pressure of the pressurized fluid in the fluid chamber. A garment includes at least one fluid bladder defining a pressurizable chamber adapted to receive the pressurized fluid from the fluid chamber to provide a force of high frequency pressure oscillation to a patient's chest wall.

To provide a technique capable of improving an in-plane uniformity of a substrate in plasma processing. A plasma processing apparatus includes a plasma processing chamber; a substrate support; a substrate chuck electrode; at least one ring chuck electrode; a substrate bias electrode; a ring bias electrode; a first voltage pulse generator; a second voltage pulse generator; and a switch configured to switch between a first connection state and a second connection state, the first connection state being a state where the first voltage pulse generator is electrically connected to the substrate bias electrode and the second voltage pulse generator is electrically connected to the ring bias electrode, and the second connection state being a state where the first voltage pulse generator is electrically connected to the ring bias electrode and the second voltage pulse generator is electrically connected to the substrate bias electrode.

The cyclical suction system generates an intermittent cyclically spaced cyclical suction pressure waveform of a vacuum pressure below atmospheric pressure and a positive pressure above the vacuum pressure. The system includes a flexible inlet tubing connected in fluid communication between a vacuum pump and a suction conduit. A positive pressure pulse generator mechanism intermittently cyclically applies an external force that compresses the segments of the flexible inlet tubing, thereby reducing the internal volume and displacing fluid that can be collected therein, thereby generating positive pressure pulses. Upon withdrawal of the applied external force, the flexible inlet tubing is configured to be able to be forced to return to an uncompressed state, thereby increasing the internal volume while reducing pressure therein until the vacuum pressure ultimately regenerates, thereby minimizing return time and maximizing cycle frequency.

The application discloses a mandarin fish domestication pool, which comprises a pool body, wherein an oxygenation device, a water inlet and a water outlet are arranged in the pool body, a bait fish breeding frame is arranged below the water inlet, and a feeding device is arranged on the side of the bait fish breeding frame; the feeding device comprises a feeding pipe, a bait temporary storage tank arranged on the upper end of the feeding pipe, a feeding hopper arranged on the upper end of the bait temporary storage tank, cathode ring pieces and anode ring pieces arranged in the feeding pipe, and a pulse generator and a pulse power amplifier connected through wires. The domestication pool is improved, so that live fish feeding, live fish and dead fish or feed proportionate feeding are facilitated, and switching and adjustment are facilitated, thereby improving the convenience and success rate of domestication.

There is provided a plasma processing apparatus comprising: a plasma processing chamber; a substrate support disposed in the plasma processing chamber, the substrate support including: a base, a ceramic member disposed on the base and having a substrate support surface and a ring support surface, one more annular members disposed on the ring support surface to surround a substrate on the substrate support surface, first and second central electrodes inserted into the ceramic member, first to fourth vertical connectors inserted into the ceramic member, first and second annular connectors inserted into the ceramic member, and a central heater electrode inserted into the ceramic member; a DC power source electrically connected to an outer region of the first annular connector through the third vertical connector; and a voltage pulse generator electrically connected to an outer region of the second annular connector through the fourth vertical connector.

The cyclical suction system produces an associated cyclical pressurization waveform of intermittent cyclical intervals of a vacuum pressure below atmospheric pressure and a positive pressure above the vacuum pressure. The system includes a vacuum pump that generates a vacuum pressure, a conduit connected in fluid communication to the vacuum pump, and a suction conduit connected in fluid communication to the conduit. Associated with the conduit is a positive pressure pulse generator mechanism that controls the vacuum pressure generated by the vacuum pump through the conduit via the vacuum pressure gating device and cyclically generates positive pressure pulses intermittently.

A mud pulse telemetry system is disclosed including a drill string positioned within a wellbore, a restriction positioned within the drill string and configured to create a pressure differential between a high pressure region and a low pressure region of the drill string, a piston including a piston opening positioned within a piston chamber and movable along an axis between a first position and a second position, a valve movable to selectively open the piston opening, and a pulser coupled to the piston and positioned for movement within the drill string along the axis. The pulser includes a pulser body having at least a portion thereof with a non-linear profile and a conduit extending through the pulser body and facilitating fluid communication between the drill string and the piston chamber. Movement of the pulser body generates a pressure wave through mud within the drill string.

Drilling mud is passed through a valve assembly set at a particular opening amount, mud flow rate and force applied by the drilling mud to a portion of the valve assembly are measured, and density of the drilling mud is estimated based on historical data. Historical data is generated by directing multiple flows through the valve assembly, where the flows are at different flow rates, and at each flow rate, different drilling fluids having different densities are directed through the valve assembly. For each flow, the valve assembly is adjusted to a different amount of opening, and a respective force exerted on the valve assembly by the flow is measured. An example of the valve assembly is a mud pulse generator having a plug member engaged with an orifice opening, a sensor in the pulse generator measuring a force applied by the mud flow.

This invention discloses a high-viscosity heavy oil heat exchanger based on a spin-flow tortuous tube, comprising a shell, tube-side inlet and outlet, and shell-side inlet and outlet; a heat exchange tube bundle connected between the tube-side inlet and outlet, the heat exchange tube bundle being composed of multiple U-shaped spin-flow tortuous tubes arranged side by side; each spin-flow tortuous tube includes a tortuous tube inlet, a spiral guide rib, a tortuous tube outlet, and a vibration-damping support ring, the spiral guide rib being disposed on the inner wall of the vibration-damping support ring, the pitch of the spiral guide rib increasing linearly along the heavy oil flow direction; multiple baffles are uniformly arranged circumferentially on the heat exchange tube bundle, each baffle having multiple tube holes, the spin-flow tortuous tubes passing through the tube holes of the baffles and fitting with the clearance; an online cleaning device is installed on the shell, the online cleaning device monitoring the scaling condition through an acoustic wave monitor, and the control unit controlling a pulse generator to emit pulse waves to clean the scaling. This invention can achieve efficient and stable heat exchange of high-viscosity heavy oil under low energy consumption conditions, while simultaneously solving the performance degradation problem caused by scaling through an intelligent cleaning system.

This invention relates to a device for electric field therapy of the digestive tract, comprising a catheter, a support, an electrode array membrane, and a pulse generator; the pulse generator includes a current sensor for sensing the current flowing through the electrode pairs; during an initial time period, in a first sequence of pulse waves, the voltage amplitude of subsequent pulses is greater than the voltage amplitude of preceding pulses, and the current sensor senses a current equal to or exceeding a lower limit value I of a set range. S(MIN) At that time, in the next time period, the absolute value U of the voltage amplitude of each pulse of the second sequence pulse wave S Equal. This invention controls the output voltage amplitude of the pulse generator through feedback from a current sensor, making treatment safer for the human body.

The invention provides a heat exchanger on-line cleaning and anti-scaling system and method.The system comprises a gas-liquid two-phase generating device, a filtering device, a monitoring device and a controller, the gas-liquid two-phase generating device comprises a gas-liquid mixing tank and a Venturi tube, the gas-liquid mixing tank is connected with a gas storage tank and a cleaning agent metering pump, and the Venturi tube is connected with the gas storage tank; an outlet of the gas-liquid mixing tank is sequentially connected with the main control valve, the pulse generator and the Venturi tube; an outlet of the Venturi tube is communicated to an inlet of the heat exchanger; the filtering device comprises a plurality of filters arranged in parallel, inlets of the filters are communicated to an outlet of the heat exchanger, and outlets of the filters are communicated to the cleaning agent storage tank; the monitoring device is used for monitoring at least one of temperature difference, pressure difference and flow difference between an inlet and an outlet of the heat exchanger; the controller regulates and controls the gas-liquid two-phase generation device to operate according to data collected by the monitoring device, and online cleaning of the heat exchanger is achieved. Real-time monitoring, cleaning and anti-scaling treatment of the heat exchanger can be achieved, and normal work of the heat exchanger is guaranteed.

A lithotripsy device for tunneling through vascular occlusions comprises a tunneling catheter including a tunneling catheter shaft having a distal end and a proximal end. A tunneling probe is disposed on the distal end of the tunneling catheter shaft. The tunneling probe has a pair of electrodes; each electrode being operatively connected to an electrical lead within the tunneling catheter shaft. The leads are configured for operative connection to an external pulse generator. Activation of an external pulse generator operatively connected to the leads causes repeated electrical discharges between the electrodes. When the electrodes are an in a fluid, the repeated electrical discharges produce repeated hydraulic shock waves in the fluid directed away from the electrical discharges. When the repeated hydraulic shock waves strike calcified tissue, the calcified tissue is broken into a modified plaque. The modified plaque has a lower resistance to mechanical dislocation that the original calcified tissue.

The utility model provides an underground concrete electroosmosis pulse detection test box which comprises a box body, a bearing platform, a lifting mechanism, a detection plate, a partition plate, a first air cylinder, a controller, a transformer, a pulse generator, a touch panel and a box door. A bearing platform, a lifting mechanism, a partition plate, a controller, a transformer and a pulse generator are respectively fixed in the box body; a detection plate is arranged on the upper side of the bearing platform, and the upper side face of the detection plate is fixed to the partition plate through a first air cylinder; and a touch panel is fixed on the outer side surface of the box body. According to the arrangement, during use, the transformer, the pulse generator and the bearing platform are matched to provide electroosmosis pulses for the underground concrete block, and then the bearing platform is matched with the detection plate, so that a worker can conveniently analyze the change of the electroosmosis pulses suffered by the underground concrete block.

Internal combustion engine control device (100) comprising a control unit that controls the operating conditions of an internal combustion engine (1) using a pulse output from a crank angle sensor (101) which detects a rotational state of a crankshaft (6) of the internal combustion engine (1) by detecting a plurality of convex teeth (7b) arranged in a radial direction on an outer periphery of a body part (7a) designed as a circular plate element of a pulse generator wheel (7, 7', 7") connected to the crankshaft (6), characterized in that the plurality of convex teeth (7b) has a plurality of short convex teeth (7b1) and a plurality of long convex teeth (7b2), each having circumferential lengths (B2) that are longer than the respective circumferential lengths (B1) of the body part (7a) at the short convex teeth (7b1), wherein the plurality of long convex teeth (7b2) is provided in a first arrangement area over a retard-side angular range of 90 degrees from a top dead center angular position (TDC) of the internal combustion engine (1) on a retard side, and over a lead-side angular range of 90 degrees from the top dead center angular position (TDC) on a lead-side, wherein in a predetermined positional mounting relation of the pulse generator wheel (7, 7', 7") the plurality of short convex teeth (7b1) is provided in a second arrangement area which, in the predetermined positional mounting relation, lies outside the first arrangement area, the control unit detects a rising edge of the pulse output or a falling edge of the pulse output, which is generated successively in time sequence, in accordance with the fact that the crank angle sensor (101) detects circumferential ends (7b11, 7b12, 7b21, 7b22) of a convex tooth from the plurality of short convex teeth (7b1) and the plurality of long convex teeth (7b2), an arithmetic processing operation performed by the control unit, comprising a first cranking process, which is an arithmetic processing operation performed upon detection of a pulse end by the control unit, which is one of the rising and falling edges of the pulse output generated in accordance with the crank angle sensor (101) detecting an end of a tooth that is one of the circumferential ends (7b11, 7b12, 7b21, 7b22) of the plurality of short convex teeth (7b1) and the plurality of long convex teeth (7b2), and a second cranking process, which is an arithmetic processing operation performed upon detection of the other pulse end by the control unit, which is the other of the rising and falling edges of the pulse output generated in accordance with the crank angle sensor (101) detecting another end of the tooth that is the other of the circumferential ends (7b21,7b22) from the multitude of long convex teeth (7b2).

This invention discloses an adaptive pulse generator for oil drilling, relating to the field of oil drilling equipment technology. The invention incorporates a pulse control terminal, an axial rotary valve, a pressure sensor, and a load detection sensor assembly within the drill collar. The axial rotary valve is equipped with an adjustment mechanism and an adjustment drive mechanism to regulate the flow area of ​​the fluid outlet channel. Based on the dynamic pulse pressure change data of the drilling fluid collected by the pressure sensor and load detection sensor assembly, and the load data from the pulse generator, the pulse control terminal controls the adjustment drive mechanism to adjust the flow area of ​​the axial rotary valve outlet channel, thereby changing the amplitude of the pulse wave. This invention monitors the load at the drill bit position and the pressure changes of the injected drilling fluid, dynamically adapting to different load conditions and drilling fluid pressures. It exhibits good adaptability, improves the quality of pulse wave formation, and thus enhances the quality of information transmission.

The utility model provides a flushing device for a tube bundle demister of a pellet desulfurization system, the tube bundle demister is arranged in a desulfurization tower and comprises a spraying assembly, the tube bundle demister is provided with two layers, and the two layers of tube bundle demisters are arranged up and down; one spraying assembly is arranged above the tube bundle demister on the upper layer, one spraying assembly is arranged below the tube bundle demister on the lower layer, and one spraying assembly is arranged between the two layers of tube bundle demisters. The rotatable spray head core is arranged in the spray head of the flushing device, and the self-cleaning effect can be achieved. High-pressure pulses are sent into the main pipe through the pulse generator, and crystallized dirt attached to the inner wall of the spray head is removed. Based on the distribution characteristics of crystalline dirt blocking the tube bundle demister, an ultrasonic generator of an auxiliary spraying assembly is designed, the flushing effect of the flushing device on the tube bundle demister of the high-pellet desulfurization system is improved, and sewage generated in the flushing process is reduced.

The invention provides an implantable pulse generator which is used for a small implantable nerve stimulation system and is suitable for receiving and fixing a stimulation electrode. The implantable pulse generator comprises a main body and a locking assembly. The body has a stimulating electrode receiving aperture and a locking aperture. The locking assembly is configured to pass through the locking hole and fix the stimulating electrode. The locking assembly comprises a locking bolt and a first sealing ferrule. The locking bolt is composed of a locking bolt head part and a locking bolt rod part in the first direction. The diameter of the locking bolt head part is larger than that of the locking bolt rod part. The locking bolt rod part penetrates through the locking hole and enters the stimulating electrode receiving hole to abut against the stimulating electrode. By providing a locking bolt having a head such that a first sealing ferrule may be added between the head and the body, the sealing interface avoids the possibility of thread breakage. As the rod part of the locking bolt extends into the locking hole, the first sealing ferrule is extruded, and the sealing effect is improved.

A system for providing neurostimulation to a patient includes a pulse generator having a housing. The implantable neurostimulation lead is configured to connect with a pulse generator, and the pulse generator is configured to generate a plurality of electrical pulses for delivering neurostimulation therapy through the lead to a patient when the lead is implanted at a target location. The lead includes one or more conductors extending from a proximal end of the lead to one or more neurostimulation electrodes disposed at or near a distal end of the lead. The lead comprises an energy absorber comprising a carbon nanotube material and extending substantially along the length of the one or more conductors.

The utility model provides equipment for pulse-type cleaning of a membrane filtration component, which relates to the technical field of cleaning and filtering equipment and comprises a cleaning pool, a bent baffle is fixed between the inner walls of two sides of the cleaning pool and close to the edge of one side, and an adjusting cavity is formed in the bent baffle. The top of the adjusting cavity extends to the top of the bent baffle, the bottom of the adjusting cavity extends to one side of the bottom of the bent baffle, a hollow filter plate is fixed between the inner walls of the two sides of the cleaning pool, and one side of the bent baffle is fixed to one side of the hollow filter plate. According to the device disclosed by the utility model, firstly, the fixed block is shifted to slide the cut-off plate towards one side of the opening, so that the opening is opened, water flow in the cleaning pool can flow to the hollow filter plate through the opening, and the water flow is filtered under the filtration of the cleaning membrane in the hollow filter plate; the filtered water flow is discharged through the water outlet pipe.

Ultrasound emitting device for applying selective treatments to hypodermic tissue (adipose and connective tissue) in rejuvenation and / or body contouring processes, comprising an electrical pulse generator, an ultrasonic transducer (3), an electronic control unit (6) equipped with specific software that controls the frequency, voltage, and duty cycle of the pulse generator, and application means (4) for orienting and directing the acoustic field onto the area to be treated on the patient / user, wherein said transducer emits in each pulse an acoustic field with an energy density not exceeding 0.7W / cm2 and a minimum emission duration of 100ms. Preferably, the transducer emits either at a single frequency or in a frequency sweep, in a frequency range between 185 kHz and 333 kHz, and even more preferably at 244 kHz.

There is provided a plasma processing apparatus comprising: a plasma processing chamber; a substrate support disposed in the plasma processing chamber, the substrate support including: a base, a ceramic member disposed on the base and having a substrate support surface and a ring support surface, one more annular members disposed on the ring support surface to surround a substrate on the substrate support surface, first and second central electrodes inserted into the ceramic member, first to fourth vertical connectors inserted into the ceramic member, first and second annular connectors inserted into the ceramic member, and a central heater electrode inserted into the ceramic member; a DC power source electrically connected to an outer region of the first annular connector through the third vertical connector; and a voltage pulse generator electrically connected to an outer region of the second annular connector through the fourth vertical connector.

The present application relates to oilfield coiled tubing operation technical field, and disclose a kind of self-excitation type full metal drilling pulse generator, mainly by power system and oscillation system composition;The power system includes full metal helical stator and rotor;The rotor is rotated in full metal helical stator inside and form helical sealed cavity between each other;The oscillation system includes swing block seat and swing block of screw connection in the bottom of full metal helical stator;The swing block seat and swing block are hot mounted between each other, and swing block seat and swing block are interference fit;Fixed block is arranged in the bottom of the swing block;The top joint is connected in the top of the full metal helical stator, and the rotor end stopper is built-in in the top joint;By reducing drilling tool friction resistance, static friction is converted into dynamic friction, so as to significantly improve drilling speed, ensure the stable control of well trajectory;Adopt full metal stator and rotor power structure, effectively expand temperature use range and corrosion resistance range.

The system and methods of the present disclosure include a system. The system can include a plurality of magnetic tunnel junction devices, where at least two of the plurality of magnetic tunnel junction devices are electrically coupled. The system can include a pulse generator electrically coupled to the plurality of magnetic tunnel junction devices to transmit an electrical pulse to actuate the plurality of magnetic tunnel junction devices. The system can include one or more processors to analyze a statistical property of each of the plurality of magnetic tunnel junction devices.

An apparatus may include a solid-state power controller (SSPCs), a pulse generator, a feedback detector, and a microcontroller. The SSPC may be configured to output power from a power source to an aircraft electrical load. The pulse generator may be configured to generate a pulse through the SSPC. The pulse feedback detector may be configured to detect a response pulse from the generated pulse reflected from the aircraft electrical load, wherein the pulse feedback detector may be operably coupled to a power output of the SSPC. The microcontroller may be configured to trip the SSPC when the response pulse detected by a corresponding pulse feedback detector operably coupled to the SSPC is determined to be abnormal.

The application belongs to the technical field of medical devices, and particularly relates to a negative pressure wound dressing system based on an alternating pulse electric field. The system comprises a dressing system main controller, a directional electric field dressing and a heart rate monitoring sensor. The main controller comprises an alternating pulse generator and two pulse current circuits, which are connected to a first electrode and a second electrode on the dressing respectively. The core technology is that the system controls the alternating pulse generator to periodically switch the current direction between the two pulse current circuits according to the heart rate value measured by the heart rate monitoring sensor, so as to dynamically change the application direction of the alternating pulse electric field applied to the wound. The system can realize adaptive switching of the electric field direction according to the physiological state (such as rest / activity) of the patient, and can optionally integrate a negative pressure drainage function. The dressing system provided by the application can provide dynamic electric stimulation more in line with the individual physiological rhythm, and aims to realize intelligent and personalized wound treatment to promote tissue repair.

The utility model discloses a pulse dust removal type rotary vibration screen relates to the technical field of agricultural grain machinery, including support, the support cooperation installation has first edulcoration box, second edulcoration box and third edulcoration box, the first edulcoration box is connected with second edulcoration box through second channel, and the second edulcoration box is connected with third edulcoration box through first channel, the cooperation installation of third baffle is installed in the first edulcoration box, the cooperation installation of pulse generator is installed in first edulcoration box one side, the cooperation installation of dust cloth bag is installed in the first edulcoration box, pulse generator and dust cloth bag correspond cooperation setting, the third edulcoration box is opened in and has primary processing chamber and secondary processing chamber. The utility model can carry out twice fine grain ash separation process to the grain that meets the grain diameter standard, greatly promotes the cleanliness level of finished product grain, which not only satisfies the strict requirement of high purity of raw materials for subsequent deep processing procedure.