401 results about "Impulse generator" patented technology

The invention relates to the technical field of cylindrical lithium ion battery production, and discloses a method for detecting insufficient welding of a cylindrical lithium ion battery, and the method comprises the following steps: S1, appearance inspection; s2, initial internal resistance benchmark test; s3, applying a short-time large-current pulse to the battery by using a pulse generator, simulating an actual load condition, and recording an instantaneous voltage drop and current response curve of the voltage of the battery end during the pulse period; s4, performing infrared thermal imaging identification and data processing; s5, learning the picture and establishing a model; s6, comparing the test picture and the data with the model; s7, dynamic internal resistance calculation; s8, cold solder joint query and sorting processing; and S9, retesting the electrical performance. According to the invention, the technologies of dynamic internal resistance measurement, nondestructive X-ray or ultrasonic detection, rate discharge test and the like are adopted, so that efficient, accurate and nondestructive detection of the cold solder joint of the cylindrical lithium ion battery is realized, and the production efficiency and the detection precision are remarkably improved.

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.

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 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.

The present invention belongs to the technical field of logging-while-drilling instruments, and discloses a large-size high-speed shear valve type mud pulser capable of improving transmission rate and displacement. It includes a vortex generator drill collar with an internal turbine generator, a circuit drill collar with an internal instrument circuit, a pulser drill collar with an internal pulse generator, and a hard connection drill collar with an internal hard connection. At both ends of the circuit skeleton in the circuit drill collar, an upstream flow channel converter connected to the turbine generator and a downstream flow channel converter connected to the pulse generator are respectively connected. The pulse generator includes a motor housing connected to the downstream flow channel converter, a motor stator fixed therein, a motor rotor located inside the motor stator, a torsion shaft connected to the motor rotor, a shear valve connected to the torsion shaft, and a shear valve plate connected to the motor housing and arranged in parallel and spaced apart from the shear valve. The torsion shaft at least includes a fixed section axially passing through the motor rotor and connected to the motor housing, a torsion section axially penetrating and suspended inside the motor rotor, and a shear valve installation section connecting the shear valve.

The invention relates to a hub carrier assembly (1) for a motor vehicle, comprising a hub carrier (2) and a wheel bearing (3) for mounting a wheel hub (4) on the hub carrier (2) for rotation about a wheel-hub axis of rotation (5), wherein a seal (14) which sealingly interacts with a pre-sealing element (15) is arranged between an inner ring (6) and an outer ring (7) of the wheel bearing (3). According to the invention, the pre-sealing element (15) surrounds the outer ring (7) of the wheel bearing (3) and carries a pulse generator (24) of a rotational speed measuring device on a side of the outer ring (7) which is remote from the inner ring (6).

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.

Systems and methods for electroporation are provided. An electroporation system includes a catheter assembly including a first electrode, a second electrode, and a pulse generator coupled to the first and second electrodes. The pulse generator is configured to apply a waveform between the first and second electrodes to perform irreversible electroporation, wherein the waveform includes pulses having a voltage amplitude of 1000 Volts (V) or less and an effective pulse width of 10 microseconds (μs) or more.

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 control circuit of a timepiece motor (2), including a bipolar permanent magnet (6), a stator (4) defining two isthmi (12a &12b) and two rest positions for the rotor, and a coil (18) mounted on the stator. The control circuit can determine the position of the rotor at rest. An electric pulse generator (22) for detecting an external magnetic field formed by a circuits for: measuring the electrical current in the coil after an electrical pulse has been triggered, comparing the measured electrical current with a reference current, measuring the time allowing measuring a rise time between triggering of the electrical pulse and the next time the electrical current flowing in the coil reaches the reference current, and processing the rise time to be able to determine whether the measured rise time indicates the presence of a given external magnetic field passing through the two isthmi.

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.

Systems, devices, and methods for stimulating peripheral nerves in the fingers or hand to treat tremor are described. For example, a wearable ring device for delivering electrical stimulation to sensory nerves in a patient's finger can include an annular ring having a plurality of electrodes and a detachable unit having a power source and a pulse generator.

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 present invention discloses a dual-pulse test system, which is configured to include: a load inductor, a test power supply is connected to a power device under test through the load inductor; a first freewheeling device, after the power device under test is tested, it forms a freewheeling loop with the load inductor; a pulse generator, which is used to provide the dual pulses required for testing the power device under test; and a failure protection circuit, when the power device under test is in a failure state, it cuts off the test power supply and constructs a freewheeling loop to make the loop current no longer increase. The present invention is configured with a failure protection circuit, which can timely cut off the power supply when the power device under test is in a failure state, and can form a freewheeling loop to realize that the loop current no longer increases, preventing the device from being burned out due to the failure of the power device under test, and playing a protective role.

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.

The present invention discloses a charging carrier, which includes a first connecting belt and a second connecting belt. The first connecting belt has a first fixing position adapted to be fixed on the arm or under the armpit on the first side of the human body, and the second connecting belt has a second fixing position adapted to be fixed under the armpit on the second side of the human body; the second connecting belt is connected to the first connecting belt, and the first connecting belt or the second connecting belt has a third fixing position adapted to be fixed on the shoulder on the first side; the first fixing position, the second fixing position and the third fixing position enable the first connecting belt and the second connecting belt to form a stable triangular connection. When the charging carrier is worn on the human body, the fixing position of the charging carrier on the human body is stable, avoiding displacement; when the installation body is fixed on the second connecting belt, the position of the installation body on the human body is relatively stable. When the charging coil is placed at the installation position of the installation body, the charging coil can be aligned with the coil of the pulse generator in the human body, improving the charging efficiency of the charging coil for the lithium battery.

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.

The invention relates to a device and a method for retarding hydrogen metallurgy bonding and flow loss of a fluidized bed. The device comprises the fluidized bed, a central gas distributor, a circumferential annular gas distributor, a circumferential circular seam gas distributor, a central gas channel, a circumferential annular gas channel, a circumferential circular seam gas channel, a pulse generator a, a pulse generator b and a pulse generator c, wherein the wave crest of the pulse generator b connected with the circumferential annular gas channel corresponds to the wave trough of the pulse generator a and the wave trough of the pulse generator c, hydrogen is blown in a pulse mode, so that solid particles in the fluidized bed continuously vibrate, contact points are damaged, the bonding phenomenon can be obviously relieved, and meanwhile, a part of bonding particles can be cracked through pulse gas flow vibration; therefore, contact of particle contact interfaces during reduction is slowed down, and the phenomenon of hydrometallurgy bonding and flow loss of the fluidized bed is slowed down.

Methods and implantable medical devices are provided that include a lead configured to be operably coupled to a pulse generator and subcutaneously implanted within a patient. The lead includes an electrode configured to receive electrical power from the pulse generator and to deliver high-voltage shocks for defibrillation therapy. The electrode has an oblong cross-sectional shape with a major dimension that is at least 10 French (F).

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.

The present invention belongs to the field of devices to scare away birds in general, preferably gulls, pigeons and vultures using a variable electromagnetic field. More specifically, the invention teaches a system of bird repellence by sensorineural interaction, which works through the formation of an electromagnetic field. The system consists of a pulse generator (1) that is electrically connected to a mesh (2) consisting of a plurality of coils (4) arranged in insulating plugs (22) that induce an electromagnetic field that interacts with the birds' magnetic orientation system.

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).