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FPGA and CPLD based impulse sequence programmer

A technology of pulse sequence and programmer, which is used in instruments, scientific instruments, program control devices, etc., can solve the problems such as the low demand for RTX2000 chipset, the inability to support nested structure, and the difficulty in supplying RTX2000 chips.

Inactive Publication Date: 2004-02-04
PHILIPS CHINA INVESTMENT +1
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Problems solved by technology

[0008] Although the Forth language is superior to other contemporary languages ​​in terms of code generation efficiency, it is not as easy to accept as other languages ​​due to its complex grammatical structure and inability to support nested structures, so the demand for the RTX2000 chipset is not It is very large, which eventually leads to difficulties in the supply of RTX2000 chips

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  • FPGA and CPLD based impulse sequence programmer
  • FPGA and CPLD based impulse sequence programmer
  • FPGA and CPLD based impulse sequence programmer

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Embodiment Construction

[0039] The present invention is constituted as figure 1 Shown: Take the FPGA-based Forth language processing unit as the core. The Forth language processing unit is directly connected to the control circuit CPLD. The Forth language processing unit is connected to the radio frequency, gradient and external circuit logic interfaces through the drive circuit and buffer circuit. Forth language The processing unit is connected with static RAM and dual-port RAM through the drive circuit; the ISA interface control circuit CPLD is connected with dual-port RAM and PIO, and the dual-port RAM and PIO are connected with the ISA bus.

[0040] Based on the pulse sequence programmer of the present invention, it can be designed as a spectrometer system suitable for NMR (Nuclear Magnetic Resonance), NQR (Nuclear Quadrupole Resonance), and MRI (Nuclear Magnetic Resonance Imaging) systems , To realize the application of imaging methods for petroleum exploration, chemical analysis, water source sear...

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Abstract

The programmer is connected as: using Forth language processing unit as a core, FPGA connecting directly to Forth language control circuit CPLD, Forth languag processing unit FPGA connecting to logical interface of radio frequency, gradient and external circuit through driving and buffer circuit and Forth language processing unit connecting to static RAM and two-port RAM through driving circuit, ISA interface control circuit CPLD connecting to two-port RAM and PIO and two-port RAM and PIO connecting with bus of ISA. The spectrometer system suitable for NMR, NQR and MRI system can be designed based on the present invention.

Description

Technical field [0001] The invention belongs to the field of nuclear magnetic resonance technology, and particularly relates to a pulse sequence programmer based on FPGA (field programmable gate array) and CPLD (complex programmable logic device). Background technique [0002] Pulse sequence programmer is the core component of MRI spectrometer. Different MRI spectrometer manufacturers adopt different implementation methods for pulse sequence programmer. Some manufacturers such as MRRS, Datalink, and SeveNMR use SMIS MR3020 based on Forth language processing technology. The design idea of ​​the control system is: first compile the pulse sequence program written in PPL language into the Forth language through the compiler, and then form the binary code through the Forth language processing unit to implement the control of the gradient and radio frequency unit. [0003] The HARRIS RTX2000 chipset is a standard platform for processing Forth language. The above-mentioned MRI spectrome...

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Application Information

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IPC IPC(8): G01R33/20G06F9/30G06F9/445G06F13/38
Inventor 徐鹏程李丽娟史建华施金泉秦松茂左宏
Owner PHILIPS CHINA INVESTMENT
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