Small-bore gamma-ray spectra well logging device as well as data acquisition transmission and self-stabilization method
A gamma energy spectrum, small aperture technology, applied in the field of well logging, can solve the problems of strong gamma rays, high content, unsuitable measurement requirements, etc., achieve high transmission and self-stabilization efficiency, and improve real-time and reliability. Effect
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[0055] The schematic diagram of the processing circuit of the small aperture gamma energy spectrum logging device according to the present invention is as follows: figure 1 As shown, the photomultiplier tube adopts CR124, and the baseline recovery circuit is composed of single-packaged double diode BAW56, resistor R, and capacitor C. The temperature detection unit is composed of integrated temperature sensor, I2C bus and CPU (microprocessor); the amplification circuit is composed of AD8620 amplifier, RC integration circuit and CR differential circuit; the A / D conversion circuit is composed of MAX1306, data reading and storage circuit. The first microprocessor follows the figure 2 The workflow shown is for high-speed acquisition of gamma pulses, including self-peaking pulses. The second microprocessor follows the image 3 The workflow shown completes the reading, transmission and real-time self-stabilization control of the spectral data stored in the dual-port RAM memory.
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