University of Science and Technology of China

Xi Qin

Lin Wang

Jiangfeng Du

Xing Rong

Zhifu Shi

Yijin Xie

Zhen Jiang

Yu Tong

Yu He

Wenzhe Zhang

A sequence signal generator and a sequence signal generation method are provided. In the sequence signal generation method, a waveform output instruction sent by a host computer is received to acquire waveform data. The waveform data includes original square wave sequence data and target square wave sequence data, and the target square wave sequence data includes a preliminary delay parameter and a secondary delay parameter. An original square wave sequence signal is acquired according to the original square wave sequence data. According to the preliminary delay parameter, preliminary delay processing is performed on the original square wave sequence signal to acquire an intermediate square wave sequence signal, and according to the secondary delay parameter, secondary delay processing is performed on the intermediate square wave sequence signal to acquire a target square wave sequence signal.

Sequence signal generator and sequence signal generation method

A magnetic resonance spectrometer and a control apparatus for the magnetic resonance spectrometer based on an FPGA. The control apparatus includes a control unit and a conversion receiving unit. The control unit includes a clock source. A waveform generation unit and a signal receiving unit inside the control apparatus are synchronized by means of the same clock source. The control apparatus includes two working modes: a continuous wave mode and an impulse wave mode. The control apparatus can output a microwave signal which is modulated by any wave and has higher synchronism and time resolution.

Magnetic resonance spectrometer and control apparatus for magnetic resonance spectrometer based on FPGA

An FPGA-based square-wave generator and a square-wave generation method. The generator comprises a bus control module for receiving a broadcast command and a broadcast address sent by an upper computer; a waveform broadcast management module for receiving the broadcast command and the broadcast address, reading original waveform data from a storage module according to the broadcast command and the broadcast address, decoding the original waveform data to obtain waveform data, generating delay data according to the waveform data, and outputting the waveform data and the delay data; a parallel-serial conversion unit for receiving waveform data input in parallel and serially outputting the waveform data to obtain a square-wave signal; a delay chain unit for delaying the square-wave signal; and a multi-path selection controller for receiving the delay data, determining an output node, for the square-wave signal, on the delay chain unit according to the delay data, and leading out a corresponding delayed square-wave signal from the output node and outputting the signal. By means of the present invention, square-wave signals with high accuracy and no dead time can be continuously output.

FPGA-based square-wave generator and square-wave generation method

Growing community of inventors

Hefei, China

Xi Qin