I/O port mapping method based on simplifying relay matrix

Abstract

The invention provides an I / O port mapping method based on simplifying a relay matrix. The method comprises the following steps of: I / O ports with the same function adopt the same relay switch; when a user maps a machine to be controlled, firstly, a computer builds a line information table; the user connects a test point which is not connected with the machine to be controlled on the machine to be controlled to a column Z with the minimal number which is not connected with the test point on the matrix, and inputs the type F of the I / O port required by the test point to the computer; the computer searches the built line information table after receiving the input from the user to find all lines, the types of the I / O ports of which are F; and the computer scans the selected lines from small to large according to the number, if the current line Y is not used and a relay is arranged between the current line Y and the Z column, the relay of Y lien and Z column in the matrix is switched on, and the Y line is marked to be used, otherwise, the computer continuously scans the next line till that the all test points are connected with each other. The method effectively improves the use ratio of the relay, is suitable for large-scale occasions, and reduces the matrix volume of the replay.

Description

technical field [0001] The invention is suitable for the field of computers, belongs to the field of computer measurement and control that requires I / O acquisition cards and has a large number of I / O ports with the same function, and is especially an I / O port mapping method of a relay matrix. Background technique [0002] The current digital measurement, control and simulation systems are generally centered on the computer, and the test points on the controlled machine are connected to the I / O board of the computer. The computer collects the parameters that need to be monitored on the controlled machine through the I / O board, and then sends the control signal to the controlled machine through the I / O board after the complex calculation of professional software on the computer, so as to achieve the measurement of the controlled machine, purpose of control. [0003] However, in some complex applications, a large number of I / O ports are often involved. For example, a car engin...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing relay matrix I / O port full mapping method that the relay utilization rate is low and cannot be adapted to large-scale occasions, the present invention provides a method to effectively improve the utilization rate of relays, adapt to large-scale occasions, reduce I / O Port Mapping Method Based on Simplified Relay Matrix for Relay Matrix Volume

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