38results about How to "Guaranteed reliable output" patented technology

A protection method may prevent a load-mismatch-induced failure in solid-state power amplifiers. In an RF power amplifier, the load voltage standing-wave ratio results in very high voltage peaks at the collector of the final stage and may eventually lead to permanent failure of the power transistor due to avalanche breakdown. The method avoids breakdown by attenuating the input power to the final stage during overvoltage conditions, thus limiting the output collector swing. This is accomplished by a feedback control system, which detects the peak voltage at the output collector node and clamps its value to a given threshold by varying the circuit gain. Indeed, the control loop is unlocked in the nominal condition and it acts when an output mismatching condition is detected. A control circuit also allows a supply-independent collector-clamping threshold to be accurately set.

The printer has at least two printing stations which cause images to be printed on a substrate. The printer is capable of registration adjustment. First and second patterns of spaced registration marks are printed onto the substrate by operation of the printing stations. The second pattern partially overlaps the first pattern to form a composite pattern of registration marks. The composite pattern is illuminated and the reflectivity thereof is examined at wavelengths complementary to the colors of the first and second patterns to obtain a reflectivity signature for the composite pattern. The reflectivity signature of the composite pattern (120) is compared with a predetermined signature to determine an adjustment factor for the printer.

Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on a sensor reading in dry air conditions, the dry air reading learned by applying a higher reference voltage to the sensor. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.

To provide a modulation control method and an optical transmission device that realize high reliability by more stably performing bias control of an optical modulator using an optical QAM scheme, an optical transmitter according to the present invention comprises a first waveguide and a second waveguide, wherein each of the first waveguide and the second waveguide are provided with an optical modulator that modulates a carrier light with a modulation driving signal that has multiple strength level values, a phase shift unit that provides a predetermined phase difference between a first optical signal outputted from the first waveguide and a second optical signal outputted from the second waveguide, a light detector that detects and photoelectrically converts a portion of a multiple value optical signal obtained by multiplexing the first optical signal and the second optical signal which have been provided with the phase difference and a control circuit that, on the basis of signal amplitude information obtained by a signal amplitude detector from wideband signal components from the light detector, corrects a first voltage provided to the first waveguide and corrects a second voltage provided to the second waveguide.

A protection method may prevent a load-mismatch-induced failure in solid-state power amplifiers. In an RF power amplifier, the load voltage standing-wave ratio results in very high voltage peaks at the collector of the final stage and may eventually lead to permanent failure of the power transistor due to avalanche breakdown. The method avoids breakdown by attenuating the input power to the final stage during overvoltage conditions, thus limiting the output collector swing. This is accomplished by a feedback control system, which detects the peak voltage at the output collector node and clamps its value to a given threshold by varying the circuit gain. Indeed, the control loop is unlocked in the nominal condition and it acts when an output mismatching condition is detected. A control circuit also allows a supply-independent collector-clamping threshold to be accurately set.

A light source device includes: a plurality of laser light sources that emit laser light; and a light source driving section that drives at least one of the laser light sources by a first driving value that is a value less than a threshold level of at least one of the laser light sources, or by a second driving value that is a value greater than a threshold level of at least one of the laser light sources, and that varies at least one of the number of laser light sources that are driven by the first driving value and the number of laser light sources that are driven by the second driving value in the laser light sources, thereby controlling the total output of laser light emitted from the laser light sources.

Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on sensor readings at voltages above and below a voltage corresponding to dry air conditions. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.

A cooling fan includes a sidewall coupled to a base of a housing and defining a compartment. The housing includes an air inlet, an air outlet, and a dust channel. The air inlet, the air outlet, and the dust channel are in communication with the compartment. An impeller is rotatably coupled to a stator coupled to the base. A control element includes a driving circuit electrically connected to the stator and a rotating direction control circuit electrically connected to the driving circuit. The air outlet and the dust channel separate an inner periphery of the sidewall into first and second guiding wall sections. The first guiding wall section has a guiding portion contiguous to the dust channel. A first spacing between the guiding portion and a center of the impeller is not larger than a second spacing between the second guiding wall section and the center of the impeller.

The invention relates to a 3D printing nozzle with the function of fully melting raw materials, including a feeding mechanism, a heating mechanism and a discharging mechanism. The heating mechanism includes a main body, a stirring assembly arranged on the main body, and several first heaters. It has a mixing chamber, a feeding pipe, a discharging pipe and an overflow prevention pipe. The stirring assembly includes a heat shield, a first motor and a screw. The feeding mechanism includes a feeding plate and a first conveying assembly set on the feeding plate, a cutting component, and the second conveying component, in the 3D printing nozzle with the function of fully melting the raw material, the feeding mechanism uses two sets of gears to assist feeding, and a blade for cutting the raw material wire is installed between the two sets of gears, which can prevent heat transfer. The heating mechanism can fully melt the incoming raw materials and store them in the storage room of the feeding and discharging mechanism. The nozzle converts the existing real-time feeding into intermittent feeding, preventing the printing from being flawed due to unmelted materials, and preventing Nozzle is blocked.

A cooling fan includes a sidewall coupled to a base of a housing and defining a compartment. The housing includes an air inlet, an air outlet, and a dust channel. The air inlet, the air outlet, and the dust channel are in communication with the compartment. An impeller is rotatably coupled to a stator coupled to the base. A control element includes a driving circuit electrically connected to the stator and a rotating direction control circuit electrically connected to the driving circuit. The air outlet and the dust channel separate an inner periphery of the sidewall into first and second guiding wall sections. The first guiding wall section has a guiding portion contiguous to the dust channel. A first spacing between the guiding portion and a center of the impeller is not larger than a second spacing between the second guiding wall section and the center of the impeller.

The invention relates to intelligent disinfecting equipment based on the Internet of Things .The intelligent disinfecting equipment based on the Internet of Things comprises a body and a plurality of disinfecting cabinets arranged in the body .Transmission mechanisms are arranged on the two sides of each disinfecting cabinet .Each transmission mechanism comprises two sliding rails, an adjusting frame and a driving assembly .According to the intelligent disinfecting equipment based on the Internet of Things, working personnel can remotely control the equipment through Bluetooth, and thus the practicability of the equipment is improved; besides, driving wheels are controlled to rotate through driving motors, driving teeth on the peripheries of the driving wheels are matched with driven teeth, the driving teeth are evenly distributed along the semicircular surfaces of the driving wheels in the circumferential direction to collect and release the disinfecting cabinets, and thus the practicability of the disinfecting equipment is improved; furthermore, in a voice control circuit, the model number of an integrated circuit is TDA1521, the output power of the integrated circuit is high, and reliable output of voice signals is ensured; an overheating and overloading short-circuiting protection function is available, and thus the reliability of the disinfecting equipment is improved .

A camera (1) for monitoring a monitored area (2), including a camera sensor (4) for generating at least one unmasked surveillance image (6) of the monitored area (2) and / or of a subarea of the monitored area (2), the camera sensor (4) being configured for providing raw data, the raw data encompassing the at least one unmasked surveillance image (6), and including an integrated evaluation unit (5), the evaluation unit (5) encompassing an input interface (8) for receiving the raw data and encompassing an output interface (17) for providing output image data.

The invention relates to an intelligent sweeping robot with wireless transmission function, comprising a main body, a signal receiving window arranged on the main body, a voice control module and a moving mechanism arranged under the main body; the voice control module includes two The cleaning components below and on both sides of the main body. In this intelligent sweeping robot with wireless transmission function, the user can remotely control the sweeping robot through the wireless communication module; the brake pads and the corresponding brake pads are controlled by the piston in the braking mechanism. The friction of the driving wheel realizes the braking of the driving wheel and improves the deceleration effect of the robot; not only that, in the timing circuit, the expensive large-scale low-leakage capacitor is replaced by a frequency divider network dominated by the second integrated circuit , the long-time timing is realized, and the first integrated circuit and the third integrated circuit have the characteristics of high performance and low price, thereby reducing the production cost of the timing circuit and improving its cost performance.

To provide a modulation control method and an optical transmission device that realize high reliability by more stably performing bias control of an optical modulator using an optical QAM scheme, an optical transmitter according to the present invention comprises a first waveguide and a second waveguide, wherein each of the first waveguide and the second waveguide are provided with an optical modulator that modulates a carrier light with a modulation driving signal that has multiple strength level values, a phase shift unit that provides a predetermined phase difference between a first optical signal outputted from the first waveguide and a second optical signal outputted from the second waveguide, a light detector that detects and photoelectrically converts a portion of a multiple value optical signal obtained by multiplexing the first optical signal and the second optical signal which have been provided with the phase difference and a control circuit that, on the basis of signal amplitude information obtained by a signal amplitude detector from wideband signal components from the light detector, corrects a first voltage provided to the first waveguide and corrects a second voltage provided to the second waveguide.

Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on sensor readings at voltages above and below a voltage corresponding to dry air conditions. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.

When a hybrid vehicle travels in CS mode in EV single-drive mode, when a required torque is larger than a torque threshold or when a required power is larger than a power threshold, and when a predetermined high response request is not being issued, a drive mode is caused to shift into HV drive mode. When the predetermined high response request is being issued, the drive mode is caused to shift into EV double-drive mode.

The invention relates to a solar streetlamp with a good power generating effect. The solar streetlamp with the good power generating effect comprises a base, a lamp pole, a side pole, a lamp shell, alamp tube and a power generation mechanism; the power generation mechanism comprises a bottom plate, a direction adjusting component, a solar panel, a speech control module and two light supplementingmechanisms; the speech control module comprises a speech control circuit; the light supplementing mechanisms comprise light reflecting plates, supporting frames and light supplementing components; and the light supplementing components comprise light reflecting plates, cross plates, adjusting units and supporting rods. According to the solar streetlamp with the good power generating effect, lights are supplemented for a shadow part on the surface of the solar panel by using the light supplementing mechanisms to prevent the generation of a hot spot effect so as to guarantee safe and stable power generation of the solar panel; and not only that, as the model of an integrated circuit U1 in the speech control circuit is TDA1521, and the output power of the integrated circuit is large, reliable output of a speech signal is guaranteed; and an overheat and overload short circuit protection function is realized so that the reliability of a system is enhanced, and the practicability of equipment is enhanced.

The invention relates to a new energy automobile motor with a good use effect, the motor includes a housing and a rotating shaft, the two ends of the rotating shaft are provided with a plurality of voice control modules, two ventilation mechanisms are arranged in the housing, a ventilation mechanism includes a vent pipe, filter screen, moving lever, a drive assembly and two touch assemblies, the transmission assembly includes a first cylinder, first piston, arc plate, connecting rod, a vent pipe, a second cylinder and a second piston, a speech control module includes a speech control circuit,the motor of the new energy vehicle with good use effect prevents the filter screen from absorbing dust when the motor is idle through a ventilation mechanism, In addition, in the voice control circuit, the integrated circuit U1 model is TDA1521, and its output power is large, which guarantees the reliability of the voice signal output, and has the function of overheat and overload short-circuit protection, thus improving the reliability of the system.

The invention relates to a high-stability 3D printing device, which includes a base, a baffle plate, a first pole, a printing head, a vertical movement mechanism, a planar movement mechanism, a first support mechanism, a second support mechanism and an adjustment mechanism. The vertical movement mechanism includes a first motor, a worm, a first worm wheel, a second worm wheel, a first lead screw, a second lead screw and a support plate assembly. In this high-stability 3D printing device, the suspended planar movement mechanism utilizes a pole The coordinates locate any point in the horizontal plane. The combination of the vertical movement mechanism and the planar movement mechanism realizes 3D printing. The adjustment mechanism can ensure that the support for holding the object is always kept level. Used to support the support board in the voice control circuit, the type of integrated circuit U1 is TDA1521. Its output power is large, which ensures the reliability of the voice signal output, and has the function of overheating, overloading and short circuit protection, thereby improving the reliability of the system.

Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on a sensor reading in dry air conditions, the dry air reading learned by applying a higher reference voltage to the sensor. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.

An O2 sensor has a sensor element, which includes a solid electrolyte layer and a pair of electrodes, while the solid electrolyte layer is interposed between the electrodes. The O2 sensor outputs an electromotive force signal in response to an air-to-fuel ratio of exhaust gas of an engine, which serves as a sensing subject. A constant current circuit, which induces a flow of a predetermined constant electric current between the pair of electrodes of a sensor element, and a current sensing arrangement, which senses a current value of an actual electric current that is conducted through the sensor element, are provided. A microcomputer determines whether an abnormality of the constant current circuit is present based on the current value of the electric current, which is sensed with the current sensing arrangement, in a case where the constant current is induced by the constant current circuit.

The invention relates to a can sealing machine based on the Internet of Things, which includes a chassis, a tray, a press head, a hob and a driving chamber. The chassis also includes a voice control module and a feeding mechanism, and the driving chamber also includes a capping mechanism. The mechanism includes a lifting assembly, a rotating assembly and a clamping assembly. The capping mechanism includes a storage cap tube, a tank cover, a support assembly and a capping assembly. The support assembly includes a second cylinder and a support plate. The capping assembly includes a fourth motor and a screw rod. , sliding rods, sliders, connecting rods and shielding plates, this can sealing machine based on the Internet of Things, compared with manual operation, this method is relatively time-saving and labor-saving, which not only reduces the labor intensity of workers, but also avoids affecting production efficiency. In the voice control circuit, the type of integrated circuit U1 is TDA1521, which has a large output power, which ensures the reliability of the voice signal output, and has the function of overheating, overload and short circuit protection, thereby improving the reliability of the system.

The invention relates to an intelligent traffic recorder with good installation effect and wide field of vision, which comprises a main body, an auxiliary mechanism, a switch and several knobs, and the front of the main body is provided with a first camera, a power socket, a data line interface and a voice announcer, and the main body There is a fastening mechanism on the back of the car. The intelligent driving recorder with good installation effect and wide field of vision uses the first motor to rotate the frame and at the same time drives the fastening plate close to and close to the side of the rearview mirror, and uses the pressure sensor to detect Fastening, so as to realize the fixed installation of the driving recorder, not only that, the second camera is continuously rotated and monitored through the auxiliary shooting unit, thereby increasing the monitoring field of view, expanding the monitoring range, and improving the practicability of the equipment. In the voice control circuit, the type of integrated circuit is TDA1521, which has a large output power, which ensures the reliability of the voice signal output, and has the function of overheating, overload and short circuit protection, thereby improving the reliability of the system.

In a semiconductor laser element: an n-type cladding layer, an undoped or n-type optical waveguide layer, an Inx3Ga1-x3As1-y3Py3 quantum-well active layer, and an undoped or p-type optical waveguide layer are formed on an n-type GaAs substrate; a first etching stop layer and an n-type first current confinement layer are formed corresponding to high-refractive-index regions realizing an ARROW structure; a second etching stop layer and an n-type second current confinement layer are formed with an opening for current injection; and a p-type cladding layer and a p-type GaAs contact layer are formed over the entire upper surface. For example, the compositions of the cladding layers, the optical waveguide layers, the first etching stop layer, the first current confinement layer, the second etching stop layer, and the second current confinement layer are In0.49Ga0.51P (or Alz1Ga1-z1As) , GaAs, p-type Inx8Ga1-x8P, GaAs, n-type or p-type Inx8Ga1-x8P, and Alz1Ga1-z1As, respectively.

The invention relates to steady, reliable and intelligentized 3D printing equipment. The steady, reliable and intelligentized 3D printing equipment comprises a support seat, a top plate, a first support rod, a printing head, a vertical movement mechanism, a plane movement mechanism, a first support mechanism, a second support mechanism and a voice control module. The vertical movement mechanism comprises a first motor, a worm, a first worm wheel, a second worm wheel, a first lead screw, a second lead screw and a support plate assembly. The plane movement mechanism comprises a second rotating shaft, a third motor, a third gear, a fourth gear and a linear displacement assembly. In the steady, reliable and intelligentized 3D printing equipment, the suspended type plane movement mechanism is located at any point inside a horizontal plane through polar coordinates; the vertical movement mechanism is combined with the plane movement mechanism, and 3D printing is achieved; in a voice controlcircuit, the specification of an integrated circuit U1 is TDA1521, the output power of the integrated circuit U1 is high, and reliable output of voice signals is guaranteed; and in addition, the 3D printing equipment has the overheating and overload short-circuit protection function, and thus reliability of a system is improved.

The invention relates to a charging pile convenient to use. The charging pile convenient to use comprises a base, a main body and two charging mechanisms, wherein each charging mechanism comprises a driving box, a storage box, a cable, a plug, a supporting mechanism and two lugs; each supporting mechanism comprises a bottom plate, a support plate, a supporting block, a lifting assembly and four supporting legs; a driving assembly is arranged in each driving box; and a voice control module is arranged in each storage box and comprises a voice control circuit. According to the charging pile convenient to use, each plug is arranged above the corresponding support plate by the corresponding supporting mechanism, the movement distance of a wire support plate on each support plate is limited bythe corresponding lugs, each plug is prevented from dropping on the ground, potential safety hazards are avoided, furthermore, in each voice control circuit, the model of an integrated circuit U1 is TDA1521, the output power of the integrated circuit U1 is high, reliable output of voice signals is ensured, moreover, an overheat and overload short-circuiting protection function is fulfilled, thus,the reliability of the system is improved, and the practicality of the charging pile is improved.

The invention relates to a safe and reliable intelligent massage chair, comprising a chair back, a rotating device, a controller, an armrest, a seat surface, a support frame and a base, the chair back is connected with the seat surface through a rotating device, and the armrest is arranged on the seat surface Above, the seat surface is set above the support frame, and the support frame is set above the base. The safe and reliable intelligent massage chair realizes the angle adjustment of the seat back and the seat surface through the rotating device, which is convenient for the user during the massage process. The middle sitting posture achieves the maximum comfort. Not only that, in the high-voltage pulse circuit of the head massager and back massager, the voltage is amplified through the third triode, the fourth triode amplifier and the transformer, thus ensuring a stable The high-voltage pulse output can change the amplitude of the output high-voltage pulse voltage and adjust the intensity of the electric pulse through the adjustable resistance at the same time, so as to realize the adjustment of the corresponding massage intensity according to the different users, thereby improving the practicability of the device.

The invention relates to a multifunctional floor mopping robot, which comprises a bottom plate, a main body, an air inlet pipe, a support mechanism, a moving mechanism, a cleaning mechanism, a dust suction mechanism and a voice control module, wherein the support mechanism comprises two support assemblies; each support assembly comprises a first motor, a buffer block, a first driving shaft, a moving block, a telescopic frame, a hinging block and two connecting rods; the voice control module comprises a voice control circuit. The multifunctional floor mopping robot has the advantages that the height of a main body is increased through the support mechanism; the equipment damage caused by short circuit due to dipping of the main body with accumulated water on the ground during the ground cleaning by the equipment is avoided; in addition, in the voice control circuit, the model of an integrated circuit U1 is TDA1521; the output power is high; the reliable output of a voice signal is ensured; in addition, an overheat and overload short circuit protection function is realized, so that the reliability of the system is improved; the equipment practicability is improved.

The invention relates to an intelligent power meter which is easy to install and disassemble and has the function of heat dissipation. It includes a display board and a watch case. One side of the display board is provided with a translation mechanism and a fixing mechanism. The fixing mechanism includes a second motor, a first connecting rod, The second connecting rod, the third sleeve, the support rod and two fixing units, the fixing unit includes the third connecting rod, the fourth connecting rod and the fixing block, the first sleeve and the cooling unit are arranged on both sides of the case, The heat dissipation unit includes the third motor of the heat dissipation pipe, the third drive shaft, the second bushing and the blocking block. The intelligent power meter, which is easy to install and disassemble and has the function of heat dissipation, operates through the fixing mechanism and the translation mechanism, which is convenient for installation and disassembly while avoiding damage to the The destruction of the display panel can be repeatedly loaded and unloaded. Not only that, the third motor drives the blocking block to move down, so that the heat dissipation pipe can be turned on, and the hot air in the watch case can be easily discharged, so as to realize the heat dissipation and cooling effect and ensure the internal components of the meter Operate in a suitable ambient temperature.