30070 results about "Control circuit" patented technology

A modular surgical system for use in a surgical procedure is disclosed. The modular surgical system includes a control module including a power supply and surgical modules including a first surgical module and a second surgical module. The first surgical module is arranged in a stack configuration with the control module and the second surgical module. The power supply is configured to output power to the first surgical module and the second surgical module. A power backplane is configured to deliver the power to the first surgical module and the second surgical module through the first surgical module. A control circuit is configured to adaptively adjust power allocations to the first surgical module and the second surgical module.

The invention relates to an electronic musical instrument ensemble system and an electronic musical instrument playing guiding device. The electronic musical instrument ensemble system comprises an electric musical instrument serving as host equipment and an electric musical instrument serving as slave equipment. Each electric musical instrument is provided with an LED display screen used for indicating a user to activate a corresponding sound induction assembly, each LED display screen comprises a plurality of LED light bars, each LED light bar is formed by a plurality of LED beads which are sequentially arranged at equal intervals from top to bottom, and each LED display screen is electrically connected with a main control circuit board of the corresponding electric musical instrument. Through the electronic musical instrument ensemble system and the electronic musical instrument playing guiding device, a plurality of electronic musical instruments of the same kind or different kinds can be connected, one electronic musical instrument serves the host equipment and controls the LED display screens, used for playing instruction, of other slave equipment, and therefore the purpose of jointly playing the same melody is achieved.

A theater chair comprises a flip-up / flip-down seat, a reclining backrest, and a reclining seat. An actuator is operatively connected to the reclining backrest for moving the backrest and seat from a normal or default upright position to any one of a multitude of reclined positions. The flip-up / flip-down seat is provided with a spring for returning the seat to its upright position when the seat is unoccupied. A sensor is operatively associated with the seat so as to effectively monitor the orientation of the seat. When the seat is vacated, the sensor will detect movement of the seat and send an appropriate signal to a control circuit which is operatively connected to the actuator. After a predetermined period of time, the actuator will be actuated so as to return the backrest from the reclined position to the default upright position.

The present disclosure relates to a speaker device. The speaker device may include an ear hook, a core housing for accommodating an earphone core, and a circuit housing for accommodating a control circuit or a battery. The ear hook may include a first plug end and a second plug end. The ear hook may be surrounded by a protective sleeve which may be made of an elastic waterproof material. The ear hook may be elastic, and a position of the core housing relative to the ear hook may be changed according to an elastic deformation of the ear hook, thereby the core housing may fit a user in front of or behind an ear of the user. The circuit housing may be fixed to the second plug end. The control circuit or the battery may drive the earphone core to vibrate to generate a sound.

The invention provides a multipath solid-state power controller detection device and method, and belongs to the technical field of integrated testing and fault diagnosis, and the device comprises an MCU control circuit module which is used for achieving the full-process automatic control and data analysis of the testing device; the load control module is used for controlling a load environment provided in a test process; the data acquisition circuit module is used for acquiring an SSPC channel, a switching value, a small voltage signal and a current signal; the power circuit module is used for providing power; the communication interface circuit module is used for communicating with the outside; and the display screen and key circuit module is used for man-machine interaction in the detection process. According to the detection device, SSPC all-condition performance verification is realized through multi-channel synchronous excitation, distributed data acquisition and dynamic loading; the core pain points of low test efficiency and difficult fault positioning of the multi-channel SSPC board card are solved.

The invention provides a COT step-down converter comprising an inductive current detection circuit configured to detect an inductive current flowing through an inductor connected to a system output of an output voltage of an output system of the COT step-down converter, and generate a current zero-crossing detection signal indicating whether the inductive current crosses zero, the inductive current zero-crossing means that the inductive current is changed from positive current to negative current; and a sleep mode control circuit configured to generate a sleep mode control signal for controlling one or more circuit modules in the COT buck converter to change from an operating state to a closed state based on the current zero-crossing detection signal, an output feedback voltage representing a system output voltage of the COT buck converter, and a predetermined reference voltage.

The invention relates to the technical field of wireless communication, and provides a radio frequency power amplifier and a radio frequency chip, the radio frequency power amplifier comprises an input matching circuit, a first-stage amplifier, a first inter-stage matching circuit, a second-stage amplifier, a second inter-stage matching circuit, a third-stage amplifier and an output matching circuit which are electrically connected in sequence; the radio frequency power amplifier further comprises a control module, a direct current power supply module, a first bias circuit, a second bias circuit and a third bias circuit. The first biasing circuit comprises a power detection network and a switch control circuit; the first input end of the power detection network serves as the first input end of the first bias circuit, the second input end of the power detection network serves as the second input end of the first bias circuit, and the power detection network is used for receiving a radio frequency signal, converting the radio frequency signal into a control voltage in a detection mode and outputting the control voltage to the input end of the switch control circuit. The control switch controls connection or disconnection of the circuit. According to the invention, the robustness of power can be improved.

A job-site tool in one aspect of the present disclosure includes: a display; a flexible printed circuit; and a control circuit. The display is visible tool from outside and includes at least one surface light emitter. The flexible printed circuit includes conductive traces. The at least one surface light emitter is on the flexible printed circuit and is electrically connected to the conductive traces. The control circuit is electrically connected to the display via the conductive traces.

The invention is suitable for the technical field of LED backlight driving, and provides a starting control circuit for LED backlight driving, a chip and a display device. The starting control circuit of the LED backlight drive comprises a detection selection module, an error amplification module, a first change-over switch module, a control module, a second change-over switch module, a logic drive module, a feedback module and a first switch module. When each first voltage is in a preset range, the first change-over switch module is used for conducting the first input end of the error amplification module and the output end of the error amplification module. And the second change-over switch module is used for transmitting the overcurrent protection signal to the logic driving module. When the detection voltage is larger than the first reference voltage, the first change-over switch module is used for conducting the first input end of the error amplifier and the detection selection module. And the second change-over switch module is used for conducting the control module and the logic driving module. Therefore, the Boost has more response time to respond to the rapid change of the LED.

The embodiment of the invention provides a multi-configuration relay-oriented aircraft electrical box parameter measurement system and method, and belongs to the field of aircraft electrical box test and diagnosis. According to the hardware level, flexible access of a multi-configuration relay electrical box is achieved based on a universal adapter interface, core parameter measurement is completed in combination with an integrated measurement and control circuit, and synchronous acquisition and processing are conducted on multiple paths of signals through a signal acquisition and processing unit; according to the software level, the pull-in / release time, the rebound time and the voltage parameters are accurately calculated through a parameter calculation module on the basis of waveform feature point recognition and dynamic excitation-response theories, and the functions of fault diagnosis, safety protection and data storage are integrated. According to the method, the crossing from on-off judgment to parameterized precise evaluation is realized, the detection efficiency, the measurement precision and the equipment reliability evaluation capability are remarkably improved, and an integrated solution is provided for external field maintenance and state prediction of the aircraft relay.

The invention discloses a full-size integrated humanoid robot which comprises a trunk mechanism, arm mechanisms arranged on the left side and the right side of the upper end of the trunk mechanism, a hip mechanism arranged at the lower end of the trunk mechanism and leg mechanisms arranged at the left end and the right end of the hip mechanism. The driving modules of the arm mechanisms and the leg mechanisms are mounted in the inner cavities of the corresponding curved-surface metal shells through bolts respectively; the hip mechanism comprises a hip assembly and hip curved surface shells installed on the front side and the rear side of the hip assembly. The hip assembly comprises a hip base connected with an output shaft of a trunk driving module of the trunk mechanism. Hip driving modules are symmetrically arranged at the left end and the right end of an inner cavity of the hip base; a control circuit board of the hip driving module is arranged on the top of the hip base through a fixing plate. On the basis of replacing a traditional shell and a skeleton with the curved metal shell, the size of the hip mechanism is reduced, the assembly steps are simplified, the light weight of the humanoid robot is achieved, and the requirement for structural strength is met.

The invention relates to the technical field of intelligent electric control systems, and discloses an intelligent electric control system and a control circuit board with the intelligent electric control system. The system comprises a signal acquisition module used for acquiring an input signal and judging a signal partition; the mode mapping module is used for constructing a mapping relation between the signal partition and the control partition; the parameter combination module is used for extracting key partitions and judging a parameter combination matching degree to obtain a bias combination; the state updating module is used for updating the mapping relation based on the deviation combination; and the control management module generates a control management library. The control circuit board integrates each module hardware circuit unit to realize signal transmission and data interaction. Accurate processing, dynamic mapping, optimal parameter combination, state real-time updating and scientific control management of the input signals are achieved, the intelligence, adaptability and reliability of the electronic control system are improved, and the system is suitable for electronic control scenes of various intelligent devices.

The invention relates to a simple and reliable touch control switch. The simple and reliable touch control switch consists of a 12-V direct-current power supply, a one-way silicon controlled rectifier 1 (SCR1) trigger circuit, a one-way silicon controlled rectifier 2 (SCR2) trigger circuit, a relay control circuit and a load RL circuit. A conventional mechanical self-locking rocker switch or a toggle switch has the defects that actions are mechanical, operating actions are different because of persons, a contact is easy to jitter, a contact is easy to ablate, abrade and the like. The touch control switch is realized by only using a small number of common components and two touch metal pieces, namely an on-load circuit is switched on by touching a touch electrode once, and an off-load circuit is switched off by touching the touch electrode once. The overall touch control switch is made of discrete components, and strong electricity can be effectively isolated from weak electricity through a relay, so that the power supply of a load can use alternating current and also can use direct current. Therefore, the touch control switch has a certain function in the field of household appliances, industrial automation, and optical, mechanical and electrical integration.

Luminance information and luminance change information are obtained at the same timing with high resolution. In one example, a solid-state imaging device includes pixels and a control circuit. Each of the pixels includes a photoelectric conversion element that generates an electrical signal based upon incident light, a first pixel circuit that converts the electrical signal into first information, and a second pixel circuit that converts the electrical signal into second information. The control circuit controls each of the pixels such that the photoelectric conversion element is connected to either the first pixel circuit or the second pixel circuit.

A circuit arrangement (10) for controlling an output voltage of the circuit arrangement (10). The circuit arrangement (10) comprises battery cells (121) forming a plurality of series-connectable cell modules (120, 120′). The cell modules (120, 120′) comprise: a first group of cell modules (150) comprising a first number of cell modules (150), Each cell module (120, 120′) of the first group has a first nominal cell module voltage in a range of 30-200 V, and at least one second group of cell modules (150′) comprising a second number of cell modules (150′). Each cell module (120, 120′) of said at least one second group has a second nominal cell module voltage that is less than the first nominal cell module voltage. The circuit arrangement (10) comprises a control unit (20) configured to: measure the output voltage of the circuit arrangement (10), and in order to control the measured output voltage towards the voltage target, control at least one respective electronic module (100, 100′) to adjust a respective contributing number of cell modules (120, 120′) of at least one of the first and second groups. Each cell module (120, 120′) of the respective contributing number of cell modules (120, 120′) is contributing, positively or negatively, to the output voltage of the circuit arrangement (10).

The embodiment of the invention provides a closed-loop control method for power driving and protection, and the method comprises the steps: constructing a voltage feedback type circuit through a high-speed operational amplifier, and forming a closed-loop gain structure through a feedback network of the voltage feedback type circuit; the load current of the output end of the voltage feedback type circuit is monitored in real time, and when the load current exceeds a first set threshold value, a protection mechanism is triggered to turn off the output stage; the power-on surge current is limited through the soft start control circuit; phase information of a load reflection coefficient is obtained, an inductance / capacitance combination of the variable dynamic impedance matching network is selected according to phase information table look-up, inductance / capacitance parameters are switched through a relay, and the transmission standing-wave ratio between the power amplifier and a load is optimized; monitoring the temperature of the radiating fin of the power tube, and dynamically adjusting the resistance value of the feedback network; and performing cooperative control of short-circuit protection, over-temperature protection and surge suppression according to the priority. According to the embodiment of the invention, the performance bottleneck in a load fluctuation scene is broken through.

The invention relates to the technical field of semiconductor laser power supplies, in particular to a semiconductor laser power supply control circuit based on linear constant current and a method thereof. According to the technical scheme, the circuit comprises a voltage follower module, a linear constant-current driving module, a power switch module, a pulse control module, a sampling feedback module and a follow current protection unit. The in-phase input end of an operational amplifier OPA320 of the voltage follower module is connected with external reference voltage # imgabs0 #, the inverted input end of the operational amplifier OPA320 is grounded through a first resistor R1 and connected with the output end through a second resistor R2, and a filter capacitor C1 is connected to the two ends of the second resistor R2 in parallel. Through a linear constant current control and pulse cooperation mechanism, the current stability and the dynamic response speed of the semiconductor laser under the wide-range and high-frequency working condition are remarkably improved, and it is guaranteed that the laser output power is accurate and reliable.

An apparatus is provided having cache circuitry providing a plurality of cache lines to store data for access by a processing element, and cache control circuitry to control storage of data in the cache circuitry. The cache control circuitry is arranged to manage storage of data within the cache circuitry for data blocks of size X exceeding a size of data that is storeable within a single cache line of the cache circuitry. The cache control circuitry is arranged, for each data block to be stored in the cache circuitry, to determine in which state of a plurality of states to store that data block in the cache circuitry, the plurality of states comprising an uncompressed state where the data block is stored within a plurality Y of cache lines and at least one compressed state where the data block is represented in a form occupying less than Y cache lines within the cache circuitry. The cache control circuitry is further arranged to maintain a plurality of metadata entries in memory, where each metadata entry is associated with a data block of size X and is arranged to identify in which state that data block is represented when stored in the cache circuitry.

A circuit device includes a current source circuit, a first charging circuit that supplies a first charging current to a charging node, a second charging circuit that supplies a second charging current to the charging node, and a control circuit that sets a current value of the first charging current and the second charging current, based on a current setting value. When the current setting value is in a first range, the first charging circuit supplies the first charging current. When the current setting value is in a second range on a higher current side, the second charging circuit supplies the second charging current. At switching between the first range and the second range, the first charging circuit supplies the first charging current and the second charging circuit supplies the second charging current.

A test and / or measurement instrument includes at least three ports and at least three measurement circuits connected to the at least three ports, respectively. The test and / or measurement instrument further includes at least one signal generator circuit and a control circuit. The control circuit is configured to set a first calibration mode and carry out a first test of the instrument by measuring the calibration signal travelling from the signal generator circuit to the respective port as well as a signal traveling from the respective port to the signal generator circuit. The control circuit is configured to set a second calibration mode and carry out a second test of the instrument by measuring the calibration signal forwarded only to the main port in the first sub-mode and the calibration signal received by the respective port from the signal generator circuit via the main port in the first sub-mode.

In accordance with some embodiments of the present disclosure, a multi-level power converter circuit includes a flying capacitor, a balancing capacitor to control a voltage across the flying capacitor, a plurality of converter switches, a control switch coupled between the flying capacitor and the balancing capacitor, and control circuitry to open and close the control switch based on states of at least two converter switches of the plurality of converter switches. In some embodiments, the multi-level power converter is a three-level buck converter, and the balancing capacitor maintains a voltage across the flying capacitor to be within a threshold range of half the input voltage of the buck converter. In some embodiments, a method for operating the multi-level power converter includes using control circuitry to operate the plurality of converter switches and the control switch to selectively couple the balancing capacitor to either side of the flying capacitor.

The invention relates to the technical field of biomedical sensing and health monitoring, and discloses a noninvasive glucose detection system. The system comprises an interstitial fluid extraction device, a photoelectric sensing module and a main control circuit which are integrated on a flexible substrate. The interstitial fluid extraction device drives subcutaneous interstitial fluid to migrate to the hydrogel interface layer under the action of reverse ion electroosmosis; the photoelectric sensing module receives interstitial fluid through a hydrogel interface layer, a working electrode of the photoelectric sensing module comprises a Cu monatomic imprinting recognition layer, and imprinting holes formed by Cu monatomic sites are specifically coordinated with glucose molecules. The master control circuit controls sampling and determines the glucose concentration based on the photocurrent signal. Noninvasive sampling and monatomic imprinting photoelectric detection are fused, sampling-detection integration is achieved, and the device has the advantages of being noninvasive, painless, high in selectivity, high in interference resistance, comfortable to wear and the like and is suitable for continuous monitoring of blood glucose.

A system includes control circuitry for identifying, during operation in a first operating mode wherein electrical power is limited by protection devices, an indicator to enter a second operating mode. The indicator corresponds to power consumption of the electrical system exceeding a power capacity of the electrical system, nearing, achieving, or exceeding a limit. In response to the indicator, the system operates in the second operating mode by retrieving reference information comprising load preferences and limits, and managing one or more loads, sources, or both to modify power consumption, power capacity, or both based on the indicator and based on the reference information. The system communicates with loads or sources, and manages branch circuit using controllable elements to prevent power consumption from exceeding power capacity. The system modifies setpoints, turns devices on or off, schedules device operation or otherwise manages the electrical system based on predetermined preferences.

The invention provides a micro-fluidic device and a preparation method thereof. The micro-fluidic device comprises a micro-fluidic substrate and a control substrate, the microfluidic substrate comprises a first substrate and a plurality of electrode pairs; the control substrate comprises a second substrate, a control circuit layer and a plurality of contact pairs; the first surface of the first substrate is provided with a plurality of opening areas, each opening area is provided with two accommodating grooves which are arranged at intervals, and the two accommodating grooves are communicated through a microfluidic channel on a common side wall; the plurality of electrode pairs are arranged on the first substrate and are arranged corresponding to the opening area. The control circuit layer is arranged on the second substrate; the plurality of contact pairs are arranged on the second substrate and are electrically connected with the control circuit layer; the control substrate is attached to the microfluidic substrate during use, the plurality of contact pairs are electrically connected with the plurality of electrode pairs, and the control circuit layer is used for applying voltage to each electrode pair. According to the microfluidic device, a plurality of samples are processed in parallel, the detection efficiency is improved, and the replacement cost can be reduced.

The invention provides a device for inhibiting drain-source overvoltage and overcurrent through active gate drive of a silicon carbide MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), aiming at solving the problem of voltage or current overshoot caused by circuit parasitic parameters in a high-speed switching process of the SiC MOSFET and simultaneously considering the switching speed and energy loss balance. According to the device, drain-source voltage vdc and direct-current bus voltage of the SiC MOSFET are collected to serve as feedback signals, and gate driving voltage and equivalent gate resistance are dynamically adjusted; in a key stage (a Miller plateau switching-on period and a voltage rising period switching-off period) of a switch transient state, a gate resistance network is switched through a logic control circuit, and suppression of drain current overshoot and drain-source voltage overshoot is realized. Simulation verification shows that the device can reduce voltage overshoot by 20%-30% and current overshoot by 25%-60%, only a single voltage feedback channel is needed, the cost is obviously lower than that of a traditional multi-signal acquisition active gate driving scheme, and the device is suitable for a high-efficiency SiC MOSFET power converter.

A system and method for an intelligent hair drying / styling apparatus with user information transmission and storage capabilities is herein provided. The hair drying / styling apparatus houses a control circuit board and an infrared or temperature sensor (or camera) in order detect an individual's hair condition moisture level to determine a user specific, customizable dryer setting. The information detected by the sensor is stored locally, on a proximal Internet-enabled device, or on a remote or cloud-based server and accessed by the hair drying / styling apparatus through a wireless local area network connectivity function. This innovation will enable any number of hair professionals and / or end consumers to improve styling and dry time. According to the present invention, energy usage is reduced to enable a more efficient design.

The invention relates to a fault diagnosis method, system and device for a chip test equipment control circuit, and the method comprises the steps: obtaining an operation parameter set of the chip test equipment control circuit, carrying out the abnormal threshold matching, and obtaining a fault classification result; performing power supply dynamic signal tracking on the chip test equipment control circuit based on the fault classification result to obtain power supply deviation data, and extracting a static offset set of the chip test equipment control circuit; performing internal failure association on the power supply deviation data and the static offset set, and performing peripheral failure association identification on the chip test equipment control circuit to obtain a diagnosis data set; and constructing a hierarchical fault tree according to the diagnosis data set, and performing peripheral root cause matching on the chip test equipment control circuit to obtain fault positioning information. According to the invention, the propagation path and the influence range of the fault can be comprehensively analyzed, and the fault positioning accuracy is improved.

The invention belongs to the field of robot control and bionic machinery, and particularly relates to a sensing-driving-control integrated dexterous hand single-finger modularization control method which comprises the following steps that a series-parallel connection hybrid three-degree-of-freedom mechanical structure is adopted, a modularization single-finger mechanism is constructed, and a single-finger driving control circuit board is designed on the modularization single-finger mechanism; a motor outputs joint driving torque through a lever transmission mechanism, and the joint motion state is fed back in real time through a magnetic encoder. Collecting a contact force vector F in real time through a sensing system; the single-finger driving control circuit board adopts a layered control framework to sequentially execute current closed-loop control, speed closed-loop control and position closed-loop control; based on the contact force vector F, generating a joint angle compensation amount through an admittance control model; a target joint angle instruction is received through a bus, and multi-module cooperative control is achieved. According to the invention, a current-speed-position three-ring nested control architecture is designed, and the disturbance rejection ratio is effectively improved.

The invention discloses a wireless optical communication alignment system and a capture alignment method thereof, and relates to the technical field of optical communication, and the method comprises the steps: a three-dimensional holder carries out the coarse alignment of an optical path between a transmitting end and a receiving end according to the direction of beacon light; an alignment device located at the top of the three-dimensional holder carries out fine alignment on the light path; the alignment device comprises a two-dimensional alignment structure, a control circuit and a device shell. The control circuit captures a light intensity feedback value of the light intensity sensor of the two-dimensional alignment structure, and adjusts an azimuth angle and a pitch angle of the optical fiber collimator of the two-dimensional alignment structure according to the light intensity feedback value so as to adjust lens orientations of the transmitting end and the receiving end; the device shell provides a supporting platform for the two-dimensional alignment structure and the control circuit and is connected with the three-dimensional holder. Coarse alignment and fine alignment are combined, accurate angle adjustment is achieved through light intensity feedback, efficient alignment of light paths of the transmitting end and the receiving end is ensured, meanwhile, the device shell provides stable support and connection, and the stability and reliability of the alignment process are guaranteed.

Embodiments of the disclosure are drawn to apparatuses, systems, and methods for activation counter initialization (ACI). A memory may be placed in an ACI mode. During the ACI mode, an ACI control circuit initializes the access count values of the memory array to an initialization value. For example, the ACI mode may work through the array on a row-by-row basis initializing the access count values along each of the rows. By controlling the initial state of the access count values, it is less likely to have a false aggressor alert because none of the access count values start at a randomly high number, simulating an aggressor even after a small number of accesses.