1 Introduction
Compared with other electric light sources, the xenon lamp source has the advantages of high luminous efficiency, low energy consumption, high energy density and long-term continuous illumination. The energy distribution of the xenon lamp radiation spectrum is close to that of sunlight, and the color temperature is about 6000K, which is an approximate point source. It is widely used in color inspection of cloth fabrics, aging test of drugs, plastics, plant cultivation, photochemistry, etc. as a source of artificial aging and simulated sunlight.
With the rapid development of science and technology, especially the maturity of power electronics technology, semiconductor technology and sensor technology, various power devices are emerging, and the power supply technology of xenon lamps is also constantly developing, which makes the application field of xenon lamps wider and wider. Therefore, it is necessary to design a stable and reliable xenon lamp power control system.
2. How the xenon lamp works
The structure of the xenon lamp is different from that of the commonly used incandescent lamp. There is no tungsten wire. The quartz bulb is filled with high-pressure helium gas of 0.019~0.0266MPa. It is a light source that achieves illumination by gas discharge. It has two electrodes, the distance between the poles is less than 10mm, helium gas is ionized into positive and negative ions under high pressure and has electrical conductivity. The positive and negative electrodes perform arc discharge to generate an arc, and the arc activates the inert gas helium to promote the metal salt to emit light.
3. System overall structure design
The design of the Xenon lamp power control system mainly includes two parts: hardware system design and software system design. The hardware system mainly includes the main controller and the xenon lamp power supply system. The block diagram of the composition is shown in Figure 1.
The software system design includes liquid crystal display program, key scan program, current, voltage, light sampling program, and current and optical feedback control algorithm programs. Through the design and joint debugging of the hardware and software control system of the xenon lamp source, the reliable and stable operation of the control system is realized.
4. Hardware design
The hardware design part of the control system mainly includes power conversion circuit, boost control circuit, relay control circuit and human and interactive interface circuit. The specific hardware structure is shown in Figure 2.
The hardware system is based on KineTIs 60 microcontroller. It has the advantages of fast processing speed, low power consumption and low cost. Its on-chip 128KB RAM, 512KB FLASH, up to 16-bit precision A/D sampling module and multi-channel DMA. The module fully meets the needs of system development [5]. Through the adjustment of the buttons and knobs, the main functions such as timing off, accumulated working time, and adjustable brightness are realized, and the relevant data is displayed on the LCD screen. The pull-in of the relay controls the triggering moment of the trigger. After the booster circuit works, the voltage rises rapidly. When the voltage value of the xenon lamp is reached, the relay pulls in and gives a trigger signal to drive the trigger to work, instantaneously generating nearly 10,000. The high voltage of the volts, the suffocating gas, completes the Qihui, and then only the 24V switching power supply is normally supplied, and the xenon lamp can work continuously. In order to reduce the interference of the digital circuit when the power drive circuit works, an optical isolator is added between the digital circuit and the power drive circuit for isolation.
The High Power Battery Pack is mainly used in various vehicles, ships, aircraft and other internal combustion engines, lighting, energy storage, uninterrupted power supply, mobile communication, portable electric tools, electric toys.there are some differences compared with other normal battery .
1.properties
High power Lithium Battery is a battery that powers a vehicle, usually compared to a small battery that powers a portable electronic device. And normal lithium battery is a kind of anode materials for lithium metal or lithium alloy, using nonaqueous electrolyte solution of a battery, and Rechargeable Battery lithium ion battery and lithium ion polymer battery is not the same
2.discharge power
a 4200 mah high power lithium battery can discharge all power in just a few minutes, but normal lithium battery could not do that completely, so normal lithium battery discharge ability cannot be compared with the high power lithium batteries entirely. The biggest difference between high power lithium battery and onormal lithium battery lies in its high discharge power and higher energy. Since high power lithium-ion batteries are mainly used for automotive energy supply, they have higher discharge power than ordinary batteries.
3.High Power Battery pack can discharge at higher instantaneous current than normal Lithium Battery Pack
High Power Battery Pack
High Power Battery Pack,High Power Battery,Battery Pack,Lithium Polymer Battery
YFJ TECHNOLOGY (HK) CO.,LIMITED , http://www.yfjpower.com