A multifunctional and low noise nuclear instrument power supply experiment platform

Abstract

The invention discloses a multifunctional and low-noise nuclear instrument power supply experiment platform, which includes a power supply circuit, an analog-to-digital converter ADC, a digital-to-analog converter DAC, a microprocessor MCU, a capacitive touch screen, a key circuit, a memory, an isolation transformer and a honeycomb ringer. Wherein, the power supply circuit includes a rectification and filtering circuit, a first low-voltage power supply circuit and a third low-voltage power supply circuit both connected to the rectification and filtering circuit, a positive high-voltage output circuit and a negative high-voltage output circuit both connected to the third low-voltage power supply circuit, and The second low-voltage power supply circuit connected with the first low-voltage power supply circuit; the outputs of the first low-voltage power supply circuit, the third low-voltage power supply circuit, the positive high-voltage output circuit and the negative high-voltage output circuit are all connected with the analog-to-digital converter ADC and the digital-to-analog conversion DAC connection; the isolation transformer input is connected to the mains power supply and the output is connected to the rectification filter circuit. The invention has the advantages of simple structure, low noise, strong anti-interference ability, stable voltage output, and reduced research and development costs.

Description

technical field [0001] The invention relates to the technical field of nuclear instrument research and development, in particular to a multifunctional and low-noise nuclear instrument power supply experiment platform. Background technique [0002] In special fields such as nuclear analysis measurement and precision measurement, the influence of power supply on the system is very important. With the continuous development of nuclear analysis and measuring instruments (referred to as "nuclear instruments") from analog technology to digital technology, the power supply technology in nuclear instruments mainly includes analog power supply, digital power supply and high-voltage power supply. In the traditional nuclear instrument power supply design, high-voltage power supply supplies power for various types of detectors (divided into positive high voltage and negative high voltage), analog power supply supplies power for signal conditioning circuits and high-speed ADCs, etc., and...

AI Technical Summary

Problems solved by technology

In the research and development of nuclear instruments, reasonable and efficient power supply design is very important. Commonly used design ideas do not effectively isolate the interference of mains power from the power supply system, causing external interference to couple into the measurement system through the power supply rail, and causing system measurement instability.

At the same time, in order to overcome the influence of mains power interference, it takes a lot of time to deal with the problem of mains power interference, which makes the development cycle longer, increases the difficulty of debugging, and greatly increases the cost of research and development

[0003] Therefore, it is urgent to propose a high-integration, low-noise nuclear instrument power supply experimental platform, which can meet the power supply voltage requirements while improving power supply accuracy, and solve the long research and development cycle caused by the independence of high-voltage power supplies and low-voltage power supplies for traditional nuclear instruments. , High R&D costs, etc., and reduce the difficulty of development and debugging. The construction of this experimental platform allows nuclear instrument R&D personnel not to consider the power supply problem, but only needs to adjust the parameters through the power experimental platform to adjust the specific high-voltage power supply requirements.

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