Industrial control is machines and equipment or production process in the absence of direct manual intervention, according to the expected goal to achieve measurement, control and other information processing and process control collectively. In the industrial control system, there are all kinds of interference, the use of optical isolator can achieve isolation, anti-jamming effect. The grid drive optocoupler (QX3120, QX341, etc.) of the core group can isolate and protect the drive signal sent from the front end of the device. It and the transistor optocoupler (QX817, QX357, etc.) realize the electrical isolation between the low-voltage digital circuit and the high-voltage drive circuit, so as to avoid the safety risks brought by the pressure difference of the initial stage of the industrial control equipment.
Programmable logic controller (PLC) was developed on the basis of electrical control technology and computer technology, and gradually developed into an industrial control device with microprocessor as the core, integrating automation technology, computer technology and communication technology. QX3H4 makes PLC users no longer worry about the port wiring problem, the control signal does not need to be divided into positive and negative voltages and adapts to a wider range of voltage input; QX224 dual-channel photorelay, the signal switching speed in microseconds, is no longer affected by the life of the switch contacts, Let the equipment run faster, more stable and safer.
The servo motor controller is a key device in the numerical control system and other related mechanical control fields. It generally controls the servo motor through three methods of position, speed and torque to achieve high-precision positioning of the transmission system. In the servo system, the transistor optocoupler QX3H7 isolates the input and output terminals and is compatible with different control signal voltages; the gate drive optocoupler QX3120 rail-to-rail low-loss output, the delay time is less than 400ns, and the common mode rejection ability is higher than 35KV/us , making the servo motor work more stably, with faster response speed and higher operating precision; QX480 provides the servo IPM module with faster interface speed and high-performance noise suppression.
Security camera is an acquisition device that converts the light image on the target surface of the image sensor from visible light to near-infrared spectrum into video image signal for the purpose of security video surveillance. QX817 and QX172 optocouplers are used in power supply and terminal control equipment As the application of voltage feedback and signal control. When the smoke sensor detects the smoke produced by the burning material, the alarm signal is sent to the terminal equipment through the low-power QX172 photorelay switch, and the buzzer is turned on to send out an alarm sound.
The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor\\\'s working power supply. Qunxin’s gate drive optocoupler can directly drive higher power IGBTs in the inverter, especially the high-performance QX330J and QX332J smart gate drive optocouplers, which have stronger overload protection capability and response speed, while simplifying the peripheral Designing the circuit reduces the design difficulty and cost, and improves the reliability of the product.
The process of detection, prevention, treatment and medical equipment and instruments are inseparable from the healthy life of the public. It has strong anti-interference ability, small size, complete insulation of input and output, suppression of electrical noise and transient interference, and elimination of grounding circuit. It is an ideal device for realizing complete isolation of medical equipment. High-speed optical couplers (such as QX6N137, QXW501, QXW601, etc.) for power and motor control circuit, data communication, digital logic interface circuit; Grid driven optocoupler (QX3120, QX341, etc.) drives IGBT and power MOSFET devices to achieve motor control and power conversion.
In the context of global energy reduction and the promotion of energy conservation and emission reduction, the proportion of new energy vehicles in the market is increasing day by day, and there is a trend of comprehensively replacing fuel vehicles. Cars are the means of transportation that shoulder the mission of personnel transportation safety. Group core optical relays (QX17x, QX22x, QXY258, QXS258, etc.) used in battery charging, BMS management, electronic control and other systems of new energy vehicles are characterized by fast response, high sensitivity, small on-going resistance, and small leakage current, which can make greater use of battery storage capacity and cycle life. The high-speed response of high-speed optical couplings (QX6N137,QX074L,QX0631, etc.) provides and collects data for the command and execution system of vehicle control system; Intelligent grid drive optocoupler (QX33xJ ) has higher output peak current, stronger disturbance resistance, with programmable fault detection, undervoltage locking characteristics for strong and weak current isolation, communication, process control and other systems.
BMS refers to the battery management system. BMS can be said to be the "battery steward" of new energy vehicles. It can monitor battery status in real time, manage vehicle power batteries, enhance battery efficiency, prevent batteries from overcharging and use Common optocoupler models: Transistor optocoupler: QX81x, QX101x, QX35x, QX3Hx, QX85x, QX8801; Photorelay: QXV158, QX258, QX2xx, QX17x;
The application environment of automobiles is complex. It is necessary to gallop in hot weather and walk flexibly in ice and snow. Without the support of excellent mechanical structure and stable electronic components, it is impossible to guarantee the safety of drivers and passengers. In automotive battery charging, BMS management, electronic control and other systems, Qunxin microelectronics transistor optocoupler QX8801 has excellent electrical performance and super environmental adaptability. -55°C~+125°C working environment temperature range, not afraid of extreme cold weather, not afraid of high temperature air waves, consistent performance.
On power batteries, integrated controllers, drive motors and VCUs, optocouplers play a key role in circuits such as data isolation transmission, signal feedback, signal amplification, and motor drive. Common optocoupler models: Transistor optocoupler: QX81x, QX101x, QX35x, QX3Hx, QX85x, QX8801; Photorelay: QXV158, QX258, QX2xx, QX17x; High-speed optocouplers: QX6N13x, QXM6xx, QX772x, QX053x, QX063x; "
Instrumentation is used to detect, measure, observe, calculate various physical quantities, material composition, physical parameters and other instruments or equipment, is a set of devices or machines prepared for a specific purpose, such as oscilloscope, power meter, tester, multimeter, etc. Core transistor photocoupler (such as: QX817, QX357, etc.) used for voltage signal feedback in the power supply area of the equipment; Optical relays (such as QX17x, QX21x, etc.) and high-speed optical couplers (such as QX6N137, QXW501, etc.) are used to isolate communication ports. The advantages of optical relays, such as no mechanical action, long life and fast response of high-speed optical couplers, have become the first choice for instruments to use optical couplers.
Switching power supply is a kind of high-frequency electric energy conversion device, is the use of electronic switching devices through the control circuit quickly "on" and "off", the input voltage pulse width modulation, so as to achieve AC-DC, DC-DC, DC-AC voltage conversion. Group core transistor optocouplers (QX817, QX1018, QX1019, etc.) in the switching power supply will enter the 220V high voltage and output low voltage at both ends of the isolation, while providing feedback signals to the front-end control circuit and protection circuit, control drive circuit output the corresponding PWM signal, in order to control the working state of the switching power tube, In order to ensure the safety of back-end equipment and users to protect the stability of the output voltage.
Household appliances liberate people from heavy, trivial and time-consuming housework, create a more comfortable and beautiful, more conducive to physical and mental health of human life and work environment, provide a variety of cultural entertainment conditions, is a modern family life necessities. The high power and high voltage of household appliances will have certain security risks, which requires the use of isolation devices to eliminate the unsafe factors caused by the great pressure difference during the level conversion. Core-group transistor photocoupler (QX817, QX1018, QX1019, etc.) voltage sampling and signal feedback; High-speed optical couplings (QXM60x, QXW60x, QX6N137, QX0601, etc.) are used to detect and protect the circuit; Thyristor optocoupler (QXx223, QXx213, QX305x, QX306x, etc.) can work under high voltage, strong current conditions, and the working process can be controlled, used for controlled rectifier, AC voltage regulation, contactless electronic switch, inverter and frequency conversion and other electronic circuits.
Photovoltaic power generation is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It can be used with energy storage systems to maximize energy utilization. QXY258/QXS258 1500V photorelays are used as signal detection and insulation detection applications in photovoltaic energy storage products. Provide security; QXN201 high-precision linear optocoupler provides higher-precision signal sampling data.
Photovoltaic power generation is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It can be used with energy storage systems to maximize energy utilization. QXY258/QXS258 1500V photorelays are used as signal detection and insulation detection applications in photovoltaic energy storage products. Provide security; QXN201 high-precision linear optocoupler provides higher-precision signal sampling data.
The inverter is a device that converts DC voltage into a sine wave 220V household AC voltage or an AC high voltage that is incorporated into the grid in a solar power generation system. The inverter system requires high-efficiency drive circuits and high-speed port communication. QX343 and QX333J can drive high-power MOSFETs, IGBTs, and SiC devices to optimize startup performance and improve anti-interference capabilities; QX074L can provide a communication rate greater than 15M dual-channel parallel SOP-8 structure saves more space.
Focus on optocoupler and light sensor product application solutions
Industrial Control 
