Hardware-in-the-loop generator and use method thereof

A signal generator, semi-physical technology, applied in digital function generators, instruments, special data processing applications, etc., can solve the problems of low degree of automation, high production cost, narrow application range, etc., to achieve low production cost, not easy to distort , Intuitive effect

Inactive Publication Date: 2012-04-25
徐华中 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects and problems of poor precision, weak intuitiveness, high production cost, low degree of automation, and narrow application range in t...

Method used

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  • Hardware-in-the-loop generator and use method thereof
  • Hardware-in-the-loop generator and use method thereof
  • Hardware-in-the-loop generator and use method thereof

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Embodiment 1

[0060] A semi-physical signal generator, comprising a host computer 1 and at least one lower computer 2, the upper computer 1 is loaded with waveform design simulation software, the lower computer 2 includes an FPGA chip 3, a DA converter circuit 9 and a signal conditioning circuit 10, FPGA Chip 3 is connected with serial FLASH4, RS232 interface 5, power supply 11, SDRAM memory 6, clock 12 and Ethernet interface 13, FPGA chip 3 is embedded with Nios II soft-core processor 7, DDS module 8, dual-port RAM14 and Frequency control word register 15, Nios II soft-core processor 7 includes CPU processor 71, URAT controller 72, SDRAM controller 73, EPCS controller 74, Ethernet controller 75, No. 1 PIO controller 76 and No. 2 PIO Controller 77, CPU processor 71 are respectively connected with RS232 interface 5, SDRAM memory 6, serial FLASH4, Ethernet interface 13 communication connections through URAT controller 72, SDRAM controller 73, EPCS controller 74, Ethernet controller 75, The ot...

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Abstract

The invention discloses a hardware-in-the-loop generator which comprises a physical object part and a non-physical object part, wherein the non-physical object part is an upper computer loaded with waveform design simulation software; the physical object part is a lower computer; the lower computer comprises a D/A (Digital/Analogue) converter circuit, a signal conditioning circuit and an FPGA (Field Programmable Gate Array) chip in which an NiosII soft core processor is embedded; when the hardware-in-the-loop generator is in use, the non-physical object part can be used for calling an automatic mode by manual operation or program to set parameters of simulation waveform; if the displayed simulation waveform meets the requirement, module parameters are generated and transmitted to the lower computer and then are matched with an NiosII soft core processor and dual-port RAM (Random Access Memory) and DDS (Direct Digital Synthesizer) modules to transmit the processed digital signal to the D/A converter circuit; and finally, the processed digital signal is processed by the D/A converter circuit and the signal conditioning circuit to obtain a final signal. With the design, the hardware-in-the-loop generator disclosed by the invention has the advantages of higher precision, stronger intuitiveness, lower production cost, higher automatic degree and wide application range.

Description

technical field [0001] The present invention relates to a signal generator, in particular to a semi-physical signal generator and a method of use thereof, and is particularly suitable for combining Nios II soft-core processor, DDS technology, SOPC technology with upper computer software and lower computer hardware to generate a signal. Background technique [0002] At present, there are mainly two types of dedicated function signal generators on the market: analog and digital. Analog signal generators use analog circuits to complete signal conversion, which has low precision and large distortion, and are basically no longer used; digital signal generators mostly use DDS technology, and use the combination of DSP and FPGA to complete signal calculation and output, although the accuracy Higher, but requires the circuit to have strong computing power, and the cost is higher. [0003] In addition, most of the existing signal generators use panel keys to control the parameters ...

Claims

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Application Information

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IPC IPC(8): G06F1/02G06F17/50
Inventor 徐华中孟磊刘畅
Owner 徐华中
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