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35results about How to "Avoid complex wiring" patented technology

Portable linear motor multi-axis linkage measuring and controlling system

The invention discloses a portable linear motor multi-axis linkage measuring and controlling system. The portable linear motor multi-axis linkage measuring and controlling system comprises a computer, a multi-axis motion control card, a grating, a current sensor, a voltage sensor, a signal processing circuit and a wireless transmitting and receiving module. Positions, speeds, voltage, currents and other performance parameters of all axis linear motors are collected dynamically, the grating, the current sensor and the voltage sensor send collected signals to the motion control card through the wireless transmitting and receiving unit, the multi-axis motion control card communicates with the computer through the wireless transmitting and receiving module, data are displayed through an own liquid crystal display screen of the control card, or the multi-axis motion control card is connected with the computer in a wireless mode, and the collected data are displayed, analyzed and stored through a virtual instrument development platform LABVIEW. The portable linear motor multi-axis linkage measuring and controlling system has the advantages of being simple, portable and high in sampling speed, testing accuracy and processing efficiency and avoiding complex wiring.
Owner:SOUTHEAST UNIV

Four-channel surface myoelectricity active concentric circle electrode and preparation method thereof

The invention relates to a four-channel surface myoelectricity active concentric circle electrode and a preparation method thereof. The electrode is composed of an FPC flexible substrate, a concentriccircle electrode, a reference electrode and a power source conversion circuit, an active electrode is designed by adopting an instrument amplifier with extremely low current noise to prevent the introduction of the internal noise and electromagnetic noise from the very beginning, concentric circle spatial filtering can reduce myoelectricity crosstalk, the amplification of artifact interference isprevented by a front-end resistance-capacitance filtering network, contacting resistance is reduced by immersion gold treatment of the electrode, the durability of the electrode is improved, electromagnetic interference is further reduced by reasonable layout and large-scale copper pavement. Compared with a commonly used myoelectricity collecting electrode on the current market, the four-channelsurface myoelectricity active concentric circle electrode has the advantages of better noise resistance performance, more excellent moving unit action potential distinguishing capability, stronger surface anti-corrosion performance and simpler structure, a user easily wears the four-channel surface myoelectricity active concentric circle electrode, and the four-channel surface myoelectricity active concentric circle electrode is suitable for collecting a high-quality surface myoelectricity signal and can be used for the study of gesture recognition and the like.
Owner:NORTHEASTERN UNIV

Wireless passive temperature sensing system for main transformer cabinet of electric locomotive

InactiveCN112179518ARealize online temperature monitoring functionAchieve readThermometer detailsThermometers using physical/chemical changesGratingTransformer
The invention discloses a wireless passive temperature sensing system for a main transformer cabinet of an electric locomotive. The wireless passive temperature sensing system comprises a surface acoustic wave temperature sensing unit, an antenna unit and an acquisition unit, the surface acoustic wave temperature sensing unit is mounted at a to-be-measured temperature in a main transformer cabinetof the electric locomotive, and is connected with the acquisition unit through the antenna unit; and the surface acoustic wave temperature sensing unit comprises a substrate, a piezoelectric substrate, an antenna module, an interdigital transducer and a reflecting grating. The piezoelectric substrate comprises a sound wave conduction substrate and a piezoelectric film positioned on the sound waveconduction substrate; the sound wave conduction substrate is located on the substrate, and the antenna module, the interdigital transducer and the reflecting grating are located on the piezoelectricfilm; and a sound absorption layer is laid on the surface of the piezoelectric film and used for absorbing bulk acoustic wave signals in the acoustic surface waves. The system has the advantages of high frequency, low time delay, high sound velocity, high reliability, high adaptability and the like.
Owner:ZHUZHOU NAT INNOVATION RAILWAY TECH CO LTD

Full-digital constant-temperature water-cooling control system for high-pressure high-capacity IEGT (Injection Enhanced Gate Transistor) converter

The invention relates to a full-digital constant-temperature water-cooling control system for a high-pressure high-capacity IEGT (Injection Enhanced Gate Transistor) converter. The full-digital constant-temperature water-cooling control system mainly comprises a liquid storage tank, an IEGT converter water-cooling system, a water pump, a cooling water circulating system, a temperature transmitter and a constant-temperature cooling control cabinet, wherein the IEGT converter water-cooling system is arranged in the IEGT converter; the water pump is used for driving the cooling water in the IEGT converter water-cooling system to circulate; the cooling water circulating system is composed of a motor of the water pump; the temperature transmitter is arranged at a water outlet pipe of the IEGT converter water-cooling system and is used for detecting the temperature of the cooling water in the water outlet pipe of the IEGT converter water-cooling system and outputting a temperature signal to the constant-temperature cooling control cabinet; and the constant-temperature cooling control cabinet is used for outputting a rotating speed control signal to the motor of the water pump according to the received temperature signal so as to adjust the rotating speed and control the flow of the cooling water in the cooling water circulating system. The full-digital constant-temperature water-cooling control system for the high-pressure high-capacity IEGT converter controls the rotating speed of the motor of the water pump according to the temperature of the cooling water flowing out of the converter so as to control the flow of the cooling water; the converter works at constant temperature; the backflow of the cooling liquid is avoided; and the energy resource is obviously saved.
Owner:GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1

Vehicle indoor lamp capable of achieving constant illuminance illumination and color temperature compensation

The present invention discloses a vehicle indoor lamp capable of achieving constant illuminance illumination and color temperature compensation, belonging to the field of vehicle indoor lamp illumination. The vehicle indoor lamp comprises a light intensity detection module, a switch, a dimming and color regulation module and a temperature detection module, the light intensity detection module collects light intensity in the vehicle and sends light intensity data to the dimming and color regulation module in a wireless transmission mode; the temperature detection module detects the temperaturein the vehicle and sends the temperature data to the dimming and color regulation module in a wireless transmission mode; and the dimming and color regulation module receives the light intensity dataand the temperature data sent by the light intensity detection module and the temperature detection module. The vehicle indoor lamp employs the ZigBee wireless communication technology and the sensortechnology to perform automatic regulation of the light illuminance and the color temperature in the vehicle according to the change of the external environment so as to achieve constant illuminance illumination of the light illuminance without change with the external environment and control of color temperature compensation of the color temperature with the change of the temperature in the vehicle, avoid complex wiring, improve the illumination quality and reduce the energy consumption.
Owner:CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST

Switch machine driving system with open-phase protection

The invention discloses a switch machine driving system with open-phase protection, and belongs to the switch machine technology. A digital input unit is provided with input signals DO1 and DO2; a relay is controlled to be sucked up or closed by input signals DO1 and DO2; by controlling the input sequence of the input signals DO1 and DO2, a first output interface or a second output interface of a commutation circuit is enabled to output, and the actuation of a first electronic switch or a second electronic switch is controlled, so the commutation operation of the motor of a switch machine is realized; an input signal DO1 sequentially passes through the delay circuit and the reversing circuit, and an input signal DO2 sequentially passes through the delay self-locking circuit and the reversing circuit. According to the invention, the overcurrent condition is detected during locked-rotor and phase loss, the drive of the switch machine is cut off, an open-phase protector is not needed, and protection of phase loss, locked-rotor and the like can be realized on hardware. The method that the electronic switch is firstly disconnected and then connected compared with a relay node is ensured by adopting digital quantity delay, so that ignition arc of the relay node can be effectively avoided.
Owner:浙江众合科技股份有限公司

A three-coordinate measuring machine safety position signal acquisition device and method

The present invention relates to a safety position signal acquisition device and method of a three-coordinate measuring machine. The acquisition device includes: a pluggable plug connected to a controller of the three-coordinate measuring machine; a relay module comprising a first relay, a second The relay and the third relay, the mapping channels corresponding to the X-axis, Y-axis and Z-axis of the CMM are respectively connected to the power supply ends of the coils of the first relay, the second relay and the third relay, the first relay, the second relay and the normally closed static contact in the two conversion contacts of the third relay are connected in turn with the normally open static contact in the remaining one conversion contact; the acquisition device has a collection positive terminal and a collection negative terminal, and the collection positive The terminal is connected with any movable contact of the two changeover contacts, and the collection negative end is connected with the moveable contact of the remaining one changeover contact. The invention is used to automatically collect the safety position signal of the measuring machine by modifying the parameters of the measuring machine controller, so as to improve the use safety of the measuring machine.
Owner:海克斯康软件技术(青岛)有限公司

A kind of four-channel surface electromyography active concentric circular electrode and preparation method thereof

This patent relates to a four-channel surface myoelectric active concentric circular electrode and a preparation method thereof. The electrodes are mainly composed of FPC flexible substrates, concentric electrodes, reference electrodes and power conversion circuits. The instrumentation amplifier with minimal current noise is used to design the active electrode, thereby avoiding the introduction of internal noise and electromagnetic noise of the amplifier from the source; concentric circle spatial filtering can reduce myoelectric crosstalk; the front-end resistance-capacitance filter network avoids the interference of artifacts Amplification; the immersion gold treatment of the electrode reduces the contact resistance and improves the durability of the electrode; reasonable wiring and large-area copper laying further weaken the electromagnetic interference. Compared with the EMG collection electrodes commonly used in the market, this electrode has better anti-noise performance, better motor unit action potential resolution ability, stronger surface corrosion resistance, and simpler structure, easy to use are worn. The electrodes are suitable for collecting high-quality surface electromyographic signals, which can be used for research such as gesture recognition.
Owner:NORTHEASTERN UNIV LIAONING

Calibration system of ship hydrophone

PendingCN110231082AAchieve calibrationCalibration implementation for calibrating hydrophonesVibration measurement in fluidHydrophoneAudio power amplifier
The invention provides a calibration system of a ship hydrophone. The calibration system comprises a controller, a power amplifier, a transducer, a calibrated hydrophone, a standard wireless hydrophone, and a monitor, wherein the controller is connected with an input end of the power amplifier through a signal line and is used for sending an excitation signal under calibration frequency to the power amplifier, an output end of the power amplifier is connected with the transducer and the power amplifier is used for amplifying the excitation signal, the transducer is underwater and is used for converting the excitation signal into an acoustic signal, the calibrated hydrophone is installed on a ship structure, generates a first voltage response value according to the acoustic signal, and sends the first voltage response value to the monitor, the standard wireless hydrophone generates a second voltage response value according to the acoustic signal, and sends the second voltage response value to the controller through wireless transmission, an input end of the monitor is connected with the calibrated hydrophone and the controller separately, and the monitor is used for receiving the first voltage response value sent by the controller and calibrating a calibration factor of the calibrated hydrophone according to the first voltage response value and the second voltage response value.
Owner:NO 719 RES INST CHINA SHIPBUILDING IND
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