Pulse magnetization automatic control circuit for measurement of pulse magnetizer

Abstract

The invention discloses a pulse magnetization automatic control circuit for measurement of a pulse magnetizer, which comprises a capacitor voltage measuring and conditioning circuit for measuring and conditioning capacitor voltage, a pulse magnetic field measuring and conditioning circuit for conditioning a voltage signal which is measured by an induction coil and is proportional to a pulse magnetic field, a data acquisition circuit which is used for converting the conditioned magnetic field signal and the conditioned capacitance voltage signal into digital quantity and serially transmitting the digital quantity to the liquid crystal display screen, and a voltage conversion circuit which is used for converting a power supply into an analog power supply, a digital power supply and reference voltage required by the capacitor voltage measuring and conditioning circuit, the magnetic field measuring and conditioning circuit and the data acquisition circuit. According to the pulse magnetizer measurement and data acquisition circuit, the real-time measurement, acquisition and display of the pulse magnetic field and the voltage of the high-voltage capacitor and the automatic control of the charging, discharging and magnetizing process are realized, and the objective requirements for real-time monitoring and automatic control of the pulse magnetizer are met.

Description

technical field [0001] The invention relates to the field of pulse magnetization measurement and data acquisition, in particular to an automatic pulse magnetization control circuit for pulse magnetization measurement. Background technique [0002] For the magnetization of samples, especially the magnetization of paleomagnetic rock samples, one of the commonly used methods is the pulse magnetization method. The pulse magnetization method uses a high-voltage charging and discharging circuit to charge a high-voltage capacitor. After the charging voltage reaches the target value, it is connected to the solenoid coil for instantaneous discharge. The pulse current in the solenoid generates a pulse magnetic field to realize pulse magnetization of the sample. [0003] The charging time of the pulsed magnetization capacitor is short, the voltage is high, and it is a strong electric dangerous device, which requires real-time monitoring. In addition, according to the needs of scientifi...

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Problems solved by technology

If the target value of the charging capacitor voltage is manually adjusted, due to the time lag, there is a capacitor voltage overshoot, and the charging and discharging process needs to be adjusted repeatedly, which greatly reduces the work efficiency. In addition, when the magnetization intrinsic parameters change, the magnetization capacitor voltage is converted The pulsed magnetic field will not be accurate

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