Multi-photography synchronous spectrum collection system for measuring temperature and concentration of multi-component welding arc

The invention provides a multi-photography synchronous spectrum collection system for measuring temperature and concentration of a multi-component welding arc. The multi-photography synchronous spectrum collection system for measuring temperature and concentration of the multi-component welding arc comprises an arc output power supply, a plurality of high-speed photography systems, a synchronous triggering device, a collection board card and a computer, wherein the arc output power supply produces arc plasma, the multiple high-speed photography systems are arranged at the side of the arc plasma, are located at the same plane as the arc plasma, are matched with narrow-band optical filters of different elements to shoot arc images of different wave lengths, the synchronous triggering device controls the multiple high-speed photography systems to achieve synchronous photography and is connected to the computer through the collection board card, the collection board card collects image data obtained by the high-s