35results about How to "Adjust current size" patented technology

A polyphase power supply protection circuit. The polyphase power supply protection circuit includes a temperature detection circuit, a controller and a pulse width modulator, wherein the temperature detection circuit transmits detected temperature to the controller, the controller takes the average of received temperature values, the temperature values detected by the temperature detection circuit are compared with the average value, a deviation value is obtained, an absolute value of the deviation value is compared with a preset value, and the controller outputs a control signal to the pulse width modulator according to a comparison result. The pulse width modulator outputs a plurality of pulse width modulating signals having different duty ratios according to the control signal output by the controller to adjust supply circuits, thereby avoiding frequent adjustment of current of a polyphase power supply in the prior art, and ensuring stability of the polyphase power supply.

The glass with coated multilayer color film consists of glass, metal film layer penetrating to 2-15 micron below glass surface and silicon film deposited on the surface of glass. The production process includes ion penetration to form metal film and chemical vapor deposition to form silicon film. In the tin tank in float glass producing line, electric field is applied to high temperature glass belt, so that metal ions migrate into glass belt surface layer before being reduced in reduction atmosphere into metal colloid to form the metal film layer. Then in a reactor, one layer of silicon film is formed on the moving glass belt through chemical vapor deposition. Through altering the kind of penetrated metal, glass in the required color may be produced. The outer silicon film can strengthen the stability and reflecting effect of the metal film, reduce the transmittance of the metal film and raise the surface wear resistance.

The invention discloses a switch sequential control and PLC oscillation producing magnetic field based energy-saving control circuit. The control circuit comprises an RLC oscillating circuit consisting of a power supply, double H-bridge circuits, a capacitor and a coil, a signal source portion and a switch control portion. Magnetic fields of different types are produced by adjusting current of the coil 3. The signal source synchronously controls ON / OFF combinations of switches 6-14 in the H-bridge circuits by producing a synchronizing signal S1, enable a direct-current power supply to form current waveform required by the coil 3, and accordingly the coil produces a corresponding magnetic field. The control circuit enables the current of the coil to reach current intensity for reaching magnetic field intensity within short time by using the direct-current power supply, and current utilization rate is improved. Energy released by the coil through switch sequential control and capacitor coil charging and discharging after outage is converted into electric energy to be stored in a capacitor for reutilization, and accordingly energy loss and coil heating caused by the fact that the energy released after coil outage is converted into heat energy are avoided.

The invention relates to the technical field of current mutual inductance polarity testing, in particular to a telescopic mutual-inductance current polarity testing device comprising a lap joint arm and a battery box. The lap joint arm is formed by fixedly connecting a telescopic rod and a gripper. A wire is arranged in the telescopic rod in a communicating mode. The two ends of the wire are electrically connected with the gripper and the battery box respectively. The gripper comprises a first connecting part, a second connecting part and a fixing head, the first connecting part is rotationally connected with the second connecting part, the second connecting part is rotationally connected with the fixing head, the bottom of the fixing head is electrically connected with the wire, and the first connecting part, the second connecting part and the fixing head form a circular ring structure. Therefore, problems that time and labor are wasted when a worker climbs to a mutual inductor, falling risks exist, and safety cannot be guaranteed when high-altitude wire lap joint is conducted are solved.

The invention relates to a device and a method for measuring magnetic induction intensity, in particular relates to a device and a method for measuring the magnetic induction intensity based on colossal magnetoresistance effect. The measuring device comprises an electromagnetic shielding device, a first loop and a second loop, wherein, the first loop comprises a colossal magnetoresistance device,a Helmholtz coil and a first power supply device; and the second loop comprises a Huygens electrical bridge and a second power source device. In the invention, the distinct effect of the colossal magnetoresistance effect is utilized, and the Helmholtz coil is adopted to provide the reversed magnetic field for balancing the magnetic field to be detected, when the Huygens electrical bridge is in balance, the numerical value of the magnetic field to be detected is equal to that of the Helmholtz coil, but the direction is reverse; and the resistance of a colossal magnetoresistance device needs not to be calculated, thus the accuracy and the precision of calculation is improved; the electromagnetic shielding device is adopted to shield the environmental magnetic field, thus the measuring environment with zero magnetic field intensity is provided, and non-interference basic parameters are provided for the follow-up measurement, thereby being beneficial for improving the accuracy of measurement.

A method for image compensation and correction is used for the fixed light source type scanner. The fixed light source is fixed in the chassis of scanner, and the optical collector is added to promote lighting efficiency. The reference board is attached the medial surface of superior wall of the scanner chassis for making scanning correction. The method provides light source with variation current to make the brilliancy of light source changed along with the changing of light emitting device position, makes the each scan line illuminated equally. The steps includes moving the light emitting device into different position, and scanning the referent board with a fixed brilliant light source to produce the relevant brightness value corresponding to the optical mechanical device position, then according to each relevant brightness value calculating the compensation value for each light emitting device position.

The invention discloses a data processing method and device for setting a light supplementing lamp set through light tracing. The method comprises the steps of determining parameters and a monitoringdistance of a camera; preliminarily setting a corresponding light supplementing lamp group according to the parameters of the camera and the monitoring distance; determining a light distribution curveand radiation flux of the light supplementing lamp group; obtaining a corresponding view field according to the parameters of the camera and the monitoring distance; determining a corresponding target according to the field of view; performing light tracing on the light distribution curve and the radiation flux of the light supplementing lamp group to obtain a tracing result, and then obtaining the radiation flux on the target; and according to the tracking result and the radiation flux on the target, adjusting the current of the light supplementing lamp set, the angle of the light supplementing lamp and the number of the light supplementing lamps. The purpose of designing the camera lamp panel can be achieved through simulation, so that whether a light supplementing lamp set scheme of model selection is feasible or not can be predicted in advance, repeated material preparation cost and process can be saved, frequent outdoor tests are reduced, and a project plan is controllable.

The invention provides box-type integrated silencing non-negative-pressure variable-frequency water supply equipment. The box-type integrated silencing non-negative-pressure variable-frequency water supply equipment comprises a water diversion box, wherein a water inlet box and a pressure supplementing box are arranged at the left side and the right side of the water diversion box separately; a flow inlet port is formed in the left side surface of the water inlet box; a flow supplementing port is formed in the right side surface of the pressure supplementing box; a water supply box is arrangedat the top of the water diversion box; a first water supply pipe and a second water supply pipe are arranged at the top of the water supply box; a silencing box is arranged at the rear part of the water supply box; a first motor bottom plate is fixed to the lower surface in the water inlet box; a first motor is arranged on the left side surface of the first motor bottom plate; a power shaft is arranged at a left-side power output end of the first motor; the left end of the power shaft is fixedly connected with the right end of a rotary shaft through a shaft coupling; and the left end of the rotary shaft is fixedly connected with the right side surface of a large gear. According to the technical scheme of the invention, the technical problems of no intelligent pressure-supplementing watersupply capacity and incapacity of realizing intelligent flow control, an active noise reduction function and the like in the prior art, are effectively solved; and popularization and application are benefited.

The invention discloses a food heating device. The device comprises a body, a heating layer is arranged between an inner wall and an outer wall of the body, a vibration electromagnetic block is arranged between the bottom and the outer wall of the heating layer, a body cavity is provided with at least two independent gratings, and the upper portion of the body is hinged to an upper cover. The device has the advantages of convenient disassembly and washing, independent separation of foods to be heated and uniform heating.

The invention discloses a micro precision machine tool capable of finishing machining a free curved surface at a time. The micro precision machine tool capable of finishing machining the free curved surface at a time is characterized by comprising a rack, a shock absorbing base, a driving assembly, a tool bit assembly, a workbench and a clamp. The rack is placed on the shock absorbing base; a machining head assembly is installed in a normal-triple-prism inner cavity defined by the rack; an X direction linear motor, a Y direction linear motor, a hydraulic cylinder piston rod, a gear pair and the like of the driving assembly coordinate and cooperate with each other, and a to-be-machined piece can be driven to move in the front, back, left and right directions, to overturn in the vertical direction, and to rotate along the horizontal plane; the tool bit assembly is driven by a Z direction linear motor to move up and down; and after the to-be-machined piece is clamped and fixed one time, machining of a plane or the free curved face can be completed. The body portion of the micro precision machine tool capable of finishing machining the free curved surface at a time is all installed in a tetrahedron structure space which is quite stable, and the micro precision machine tool capable of finishing machining the free curved surface at a time is compact in structure, reasonable in arrangement, high in machining precision, good in reliability and stability, capable of finishing machining and forming the free curved surface at a time, and the like.

An electric power system for charging a power supply includes a detection unit and a control unit, the detection unit includes a current detection unit, a temperature sensor and a humidity sensor, thetemperature sensor mainly checks the temperature of the AC / DC converter, the humidity sensor mainly detects the humidity of the environment in which the AC / DC converter and an accumulator are located, and the current passing through the detection unit is turned off by a control unit, thereby protecting the transmission itself, and the current detection unit comprises a current detector and an alarm. As that current detector is arrange, facilitates adjustment of the battery charging current range, The signal transmission unit transmits the current signal passed through the ammeter to the CPU after being converted by an AD converter, and adjusts the magnitude of the conversion resistor by controlling the PCB, thereby adjusting the magnitude of the current in the circuit through detecting the magnitude of the current in the path by the ammeter connected in the circuit.

The invention provides an environment-friendly electric blanket capable of being automatically adjusted, and relates to the technical field of bedding articles. The environment-friendly electric blanket capable of being automatically adjusted comprises a bottom plate, a heating cylinder is fixedly installed at the top of the bottom plate, an iron core is fixedly installed at the bottom of the heating cylinder, coils are wound around the periphery of the iron core, a control circuit is connected between the coils, and a sliding block is connected to the top of the heating cylinder in a slidingmode. And a magnetic block is fixedly installed at the bottom end of the sliding block, contacts are fixedly installed at the left end and the right end of the sliding block, and a heating wire is wound around the periphery of the sliding block in the heating cylinder. According to the environment-friendly electric blanket capable of being automatically adjusted, stable heating is guaranteed; meanwhile, electric power waste caused by full-area heating is reduced, more energy is saved, the environment is protected, fire disasters caused by long-time heating of the electric blanket are avoided,the safety of the electric blanket is improved, and the electric blanket can be suitable for people with different weights and different temperatures; practicality of the electric blanket is improved.

The invention provides an intelligent dimming device, which comprises: a voice recognition module for recognizing voice dimming instruction; a light sensor for illumination intensity in an environment; a dimming circuit for adjusting current output to at least one LED lamp so as to adjust the brightness of the at least one LED lamp; and an automatic control module for adjusting the duty ratio of aswitching tube in the dimming circuit according to a voice dimming instruction and / or according to the illumination intensity so as to enable the dimming circuit to adjust the current output to the at least one LED lamp. According to the intelligent dimming device, the duty ratio of the dimming circuit can be controlled and adjusted through voice, so that the working mode of the LED lamp is changed, and different light effects are displayed.

The invention relates to a magnetic suction precision sowing method and device suitable for precision sowing of small grain seeds such as vegetables, flowers and seedlings. The method is to form a magnetic suction type seed picker by a magnetic suction head, an electromagnetic coil, a diamagnetic sleeve, etc., and pass a current to the electromagnetic coil to make the magnetic suction head generate a certain magnetic induction intensity, thereby generating a certain amount of pressure at the lower end of the magnetic suction head. The magnetic field, using the presence or absence of magnetic force, absorbs and broadcasts seeds to achieve precision sowing; adjusting the magnitude of the electromagnetic coil energizing current can obtain different magnetic field forces to achieve precision sowing of seeds of different particle sizes. The device includes a sowing mechanism, a magnetic seed picker, a seed box, a conveying platform, a conveyor belt, a tray, a motor, etc. The sowing mechanism is a parallelogram mechanism, and a magnetic suction type is installed on it according to the hole distance of the tray. Seed taker. The method can realize both on-demand sowing and drill sowing, and the precision sowing rate of single grain is high, the sowing speed is fast, and the seeds are not damaged.

The invention belongs to the technical field of interferometer systems, and particularly relates to an adjustable spectrum correction system and method. The system comprises a swing device, a swing driving device, a control circuit device and a high-frequency working device. The method comprises the following steps: S1, inputting triangular wave current, and judging whether an interference peak is centered or not; if not, turning to the step S2; s2, starting bias adjustment, and judging whether the first data separator is A or B; s3, if the data separator is A, determining the data separator as a rising edge, and if the swing arm deviates leftwards, increasing a bias parameter; if the swing arm deviates rightwards, the bias voltage parameter is reduced; s4, if the data separator is B, determining the data separator as a falling edge; if the swing arm deviates leftwards, the bias voltage parameter is reduced; if the swing arm deviates rightwards, the bias voltage parameter is increased; and S5, when the position of the swing arm after deviation rectification is in the middle, the deviation rectification process is completed. The device has the advantages that environment vibration can be counteracted, and the magnitude of current can be adjusted according to the inclined ground, so that the swing arm is centered.

The invention relates to an all-in-one label folding and cutting machine, which includes a frame and a workbench arranged on the frame. A protective glass cover is arranged on the workbench. Both sides of the protective glass cover are respectively provided with a feeding port and a There is a through hole on the surface of the workbench, the through hole is provided with a cutting assembly, the hemming assembly is arranged above the cutting assembly, rollers are arranged on both sides of the through hole, and the rollers and The cylinders are connected, the cutting assembly includes a cylinder and a heating wire support connected to the cylinder, and a heating wire is arranged on the heating wire support, and the hemming assembly includes a linear slide rail and sliders arranged at both ends of the linear slide rail. The all-in-one label folding and cutting machine of the present invention cuts the label through the electric heating wire, which can reduce the trouble; through the switching of the cutting component and the folding component, the purpose of one machine with multiple functions is realized, the current of the electric heating wire is adjusted, and the electric heating is operated. The wire can be switched freely in the two processes of cutting and folding.

The invention discloses a switch sequential control and PLC oscillation producing magnetic field based energy-saving control circuit. The control circuit comprises an RLC oscillating circuit consisting of a power supply, double H-bridge circuits, a capacitor and a coil, a signal source portion and a switch control portion. Magnetic fields of different types are produced by adjusting current of the coil 3. The signal source synchronously controls ON / OFF combinations of switches 6-14 in the H-bridge circuits by producing a synchronizing signal S1, enable a direct-current power supply to form current waveform required by the coil 3, and accordingly the coil produces a corresponding magnetic field. The control circuit enables the current of the coil to reach current intensity for reaching magnetic field intensity within short time by using the direct-current power supply, and current utilization rate is improved. Energy released by the coil through switch sequential control and capacitor coil charging and discharging after outage is converted into electric energy to be stored in a capacitor for reutilization, and accordingly energy loss and coil heating caused by the fact that the energy released after coil outage is converted into heat energy are avoided.

The invention discloses a micro-precise machine tool capable of processing free-form surfaces at one time, which is characterized in that it includes a frame, a vibration-damping base, a drive assembly, a cutter head assembly, a workbench and a fixture. The frame is placed on the damping base, and the processing head assembly is installed in the inner chamber of the regular triangular pyramid surrounded by the frame; the X-direction and Y-direction linear motors, hydraulic cylinder piston rods and gear pairs of the drive components are coordinated , cooperation, can drive the workpiece to be processed to move forward, backward, left, and right, flip along the vertical direction and rotate along the horizontal plane; the cutter head assembly moves up and down under the drive of the Z-direction linear motor: after the workpiece to be processed is clamped and fixed once, it can be Complete machining of flat or free-form surfaces. The main part of the present invention is all installed in an extremely stable tetrahedron structure space, which has the characteristics of compact structure, reasonable layout, high processing precision, good reliability and stability, and can complete the processing and forming of free-form surfaces at one time.

A method for image compensation and correction is used for the fixed light source type scanner. The fixed light source is fixed in the chassis of scanner, and the optical collector is added to promote lighting efficiency. The reference board is attached the medial surface of superior wall of the scanner chassis for making scanning correction. The method provides light source with variation current to make the brilliancy of light source changed along with the changing of light emitting device position, makes the each scan line illuminated equally. The steps includes moving the light emitting device into different position, and scanning the referent board with a fixed brilliant light source to produce the relevant brightness value corresponding to the optical mechanical device position, then according to each relevant brightness value calculating the compensation value for each light emitting device position.

The invention provides an automatically adjustable environment-friendly electric blanket and relates to the technical field of bedding. The self-adjusting environment-friendly electric blanket includes a base plate, a heating cylinder is fixedly installed on the top of the base plate, an iron core is fixedly installed on the bottom of the heating cylinder, a coil is wound around the iron core, and a coil is wound between the coils. A control circuit is connected indirectly, a slider is slidably connected to the top of the heating cylinder, a magnetic block is fixedly installed at the bottom of the slider, contacts are fixedly installed at the left and right ends of the slider, and inside the heating cylinder A heating wire is wound around the slider. The environmentally friendly electric blanket that can be automatically adjusted ensures stable heating while reducing the waste of electricity caused by heating the entire area, which is more energy-saving and environmentally friendly, avoiding fires caused by long-term heating of the electric blanket, and increasing the safety of the electric blanket. Safety, can be applicable to people with different body weights and different temperatures, and improves the practicability of the electric blanket.

The present application discloses a data processing method and device for setting a supplementary light group through ray tracing. The method includes: determining the parameters of the camera and the monitoring distance; and initially setting the corresponding supplementary light group according to the parameters of the camera and the monitoring distance ;Determine the light distribution curve and radiant flux of the supplementary light group; obtain the corresponding field of view according to the parameters of the camera and the monitoring distance; determine the corresponding target according to the field of view; determine the light distribution curve and radiant flux of the supplementary light group Carry out ray tracing, get the tracing result, and then obtain the radiant flux on the target; according to the tracing result, the radiant flux on the target, the current magnitude of the supplementary light group, the angle of the supplementary light and the number of supplementary lights Make adjustments. It achieves the purpose of realizing the design of the camera light board through simulation, so that it can be predicted in advance whether the supplementary light group scheme is feasible, and it can save the cost and process of repeated material preparation, reduce frequent outdoor tests, and make the project The plan is under control.

The invention refers to a device and method for measuring magnetic induction intensity, especially to a device and method for measuring magnetic induction intensity based on the colossal magnetoresistive effect. The device includes an electromagnetic shielding device, a first loop and a second loop; the first loop includes a colossal magnetoresistive element, a Helmholtz coil and a first power supply device; the second loop includes a Huygens bridge and a second power supply device. The Helmholtz coil is utilized to supply a counter magnetic field by the use of significant action of the colossal magnetoresistive effect, so as to balance a magnetic field to be measured. When the Huygens bridge is balanced, the magnetic field to be measured is numerically equal to the magnetic field of the Helmholtz coil, but their directions are opposite, therefore, the device is not required to calculate the resistance of the colossal magnetoresistive element, thereby improving calculation accuracy and precision. The electromagnetic shielding device is utilized to effectively shield the environmental magnetic field, provide a measuring environment with zero magnetic field intensity, provide basic parameters without interference for the subsequent measuring, and improve the measuring accuracy.

The invention discloses a self-adaptive friction pendulum support based on electromagnetic control and a resetting method, and the self-adaptive friction pendulum support comprises a seat plate assembly, an upper support plate is provided with a first inner groove, a lower support plate is provided with a second inner groove, and the side walls of the first inner groove and the second inner groove are provided with electromagnets; the sliding assembly is arranged between the first inner groove and the second inner groove and is provided with two permanent magnets which are opposite to the electromagnets in magnetism; the reset assembly and the upper check block are connected with the upper support plate and connected with the sliding assembly through a plurality of first elastic components, and the lower check block is connected with the lower support plate and connected with the sliding assembly through a plurality of second elastic components. The sensor unit is used for detecting deformation information generated by the first elastic component and the second elastic component; and the control assembly is used for receiving the deformation information and adjusting the magnitude of the current input into the electromagnet. The self-adaptive friction pendulum support solves the problems that the shock resistance of an existing friction pendulum support is difficult to control in real time according to the magnitude of earthquake force, the existing friction pendulum support is difficult to reset completely when large residual displacement occurs, and the anti-drawing capacity is weak.

The invention provides gold cyanide-free electroforming liquid, a preparing method and an electroforming method. The gold cyanide-free electroforming liquid comprises 50-70 g of ammonium sulfite, 100-125 g of ammonium sulfate, 25-55 g of ethylene diamine tetraacetic acid, 85-115 g of potassium citrate, 70-100 g of potassium chloride, 0.5-1 g of dinitroso-phenol, 1-1.5 g of butynediol, 1-2 g of saccharin and 5-15 g of sodium gold sulfide gold content. The gold cyanide-free electroforming liquid, the preparing method and the electroforming method are safe and environment-friendly.

The invention relates to the technical field of headphones and particularly relates to a heartbeat based laser flickering headphone and a realization method thereof. The realization method comprises the following steps: a, acquiring heart rate data and calculating a heart rate value; b, judging whether the heart rate value is normal or not; if the heart rate value is normal, entering the next step; otherwise, repeating the step a; c, recording time positions of a wave crest and a wave trough of a heart rate; d, pre-judging time positions of the next wave crest and wave trough; e, judging whether the pre-judged time positions of the wave crest and wave trough are in a certain range of the time positions of the wave crest and wave trough of the recorded heart rate or not; if the pre-judged time positions of the wave crest and wave trough are in a certain range of the time positions of the wave crest and wave trough of the recorded heart rate, entering the next step; otherwise, repeating the step a; f, adjusting the resistance of a digital potentiometer so as to adjust the size of current of a laser diode; and g, laser flickering along the heartbeat. The wave crest and wave trough value of each time of the heart rate beating are recorded; if a waveform of the heart rate is located at the wave crest, the laser is turned on; and when the waveform of the heart rate is located at the wave trough, the laser is turned off, and a light-emitting headphone wire can flicker along the heartbeat and breathing.

The invention discloses a soft start circuit which comprises a monitoring module, a driving module and a first switch arranged on a power supply path of a power supply module and an FPGA, wherein the monitoring module is used for monitoring the voltage of the output end of the power supply module and outputting a corresponding control signal according to the voltage; and the driving module is used for adjusting the conduction degree of the first switch according to the control signal so as to adjust the current on the power supply path. According to the invention, the influence caused by that the post-stage load current is overlarge, so that the front-end voltage is lowered, can be reduced, and the stability of a power supply loop is ensured. The invention further discloses an FPGA system which has the above beneficial effects.

The invention discloses a latex electrodeposition device. The latex electrodeposition device comprises a negative pole pool and a driving mechanism, wherein the negative pole pool is used for containing a glue solution. The output end of the driving mechanism is provided with a positive pole reactor. The positive pole reactor and the negative pole pool are rotatably connected. A plurality of strip-shaped holes are formed in the bottom of the negative pole pool. Elastic layers are arranged in the strip-shaped holes. The latex electrodeposition device further comprises a plurality of first magnets. The first magnets are arranged at the bottoms of the elastic layers at intervals. A translation mechanism is arranged below the negative pole pool. A plurality of second magnets are arranged on two sides of the top of the translation mechanism. A plurality of third magnets are arranged between the second magnets. The third magnets are connected with the top of the translation mechanism. The first magnets are mutually exclusive with the second magnets and the third magnets. Excitation coils are wound around the second magnets and the third magnets respectively. The device can prevent the occasion that as solid glue which is not collected is excessively deposited, so that the volume increases gradually, and gel film electrodeposition and normal collecting is prevented from being affected.