Hardware simple design method of PC collecting card

A design method and acquisition card technology, applied in the direction of program loading/starting, program control devices, etc., can solve the problems of difficult adjustment of acquisition cards, default flexibility, high cost of PC acquisition cards, etc.

Inactive Publication Date: 2002-06-19
WANXIANGQIANCHAO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, special acquisition cards are generally difficult to adjust, and can only be fine-tuned, such as setting gain, sampling rate, etc.
In short, the cost of dedicated PC acquisition card is high, and the default flexibility

Method used

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  • Hardware simple design method of PC collecting card
  • Hardware simple design method of PC collecting card
  • Hardware simple design method of PC collecting card

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] System logic box see figure 1 , in this system, it mainly includes the following functional modules:

[0010] 1) PC104 bus interface decoding and data latch, transmission module.

[0011] 2) FLASH memory (user program memory) module.

[0012] 3) Dual-port RAM data exchange module.

[0013] 4) Single-chip microcomputer and its peripheral circuit modules.

[0014] The working principle of the system is described as follows: First, start the embedded PC system, then the embedded PC controls or manually controls the startup of the single-chip microcomputer, and runs the user program stored in the FLASH storage. In addition to normal data acquisition, calculation, output control and other functions in this user program, there is also a data transmission function, that is: write the data that needs to be exchanged with the PC into the dual-port RAM according to the pre-defined address, by The embedded PC uses the PC104 bus to calculate the data in the dual-port RAM, and t...

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PUM

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Abstract

The invention discloses a method for simplified designing hardware of PC acquisition card. The step is as follows. (1) First starting embedded type PC system. (2) The embedded type PC system controls starting of single chip computer manually or autoamtically, running user program stored in FLASH memory. (3) The data need to be exchanged to PC is written into double ports RAM, according to predefined address. (4) The embedded type PC reads out the data in the double ports RAM through PC 104 bus. (5) With said data being processed, the processed result and the data needed to transfer to the single chip computer are rewritten into double ports RAM that is read by the single chiop computer. In the invention the single chip computer is as resources of ports of perripheral equipment, leaving out specific A/D chip and I/O chip.

Description

technical field [0001] The invention relates to a simple hardware design method of a PC acquisition card. Background technique [0002] Most of the PC acquisition cards are products of professional industrial control machine companies, and there are many varieties. Users generally choose according to the needs of the application. In many cases, the user's application system is relatively simple, but it is difficult to find a simple acquisition card. On the other hand, the user needs many functions, and often one board is not enough, so multiple acquisition boards have to be used. It will cause redundancy and waste of system resources. The acquisition system composed of PC is generally a small and medium-sized system, and the required peripheral resources are not too many, but more types are required. At the same time, it is hoped that the size and type of the system can be adjusted. However, special acquisition cards are generally difficult to adjust, and only f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
Inventor 程军姜陵张新吴志强崔继波
Owner WANXIANGQIANCHAO CO LTD
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