| CPC G01N 21/71 (2013.01) | 5 Claims |
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1. Tesla Photoionization Detector is characterized by comprising power supply driver board, Tesla coil, gas excitation cell, spectral filter, photosensitive element, amplifying board and data acquisition unit;
the Tesla coil comprises capacitor, primary inductance coil and secondary inductance coil, wherein one end of primary coil is connected with power supply driver board, the other end of primary coil is connected with one end of capacitor, the other end of capacitor is connected with a switch on power supply driver board, one end of secondary coil is connected with the middle or end of primary coil, and the other end of secondary coil is connected with one end of gas excitation cell through a high-voltage line for outputting high frequency high voltage electricity, the other end of gas excitation cell is grounded, and gas molecules in gas excitation cell are stimulated by high frequency high voltage electricity, transforming them into plasma and emitting spectrum;
spectral filter is adjacent to the gas excitation cell for screening and collecting a specific optical signal emitted by gas excitation cell;
photosensitive element receives power supply through power supply pin on power supply driver board, and is used for converting the optical signal output by the spectral filter into an electrical signal;
amplifying board receives power supply through power supply pin on power supply driver board, and is used for receiving the electrical signal output by the photosensitive element group and amplifying it;
the data acquisition unit receives power supply through power supply pin on power supply driver board, and is used for acquiring, processing and storing the electrical signal data output by amplifying board.
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