Switching value input device, switching value input design method and detection method

Abstract

The invention relates to a switching value input device, a design method and a detection method. The device comprises an electronic control unit and a plurality of switches, wherein the electronic control unit comprises a plurality of input / output ports; N definitions in the input / output port are input ports and M definitions are output ports; N groups of switches are arranged and each group has M switches; first ends of the M switches in each group are respectively connected with the M output ports and second ends of the M switches in each group are connected in parallel together and are connected with one of the N input ports; the electronic control unit is configured in such way that: the M output ports output specific potentials at the same time and the N input ports are detected to judge whether a switch is triggered, and after the switch is judged to be triggered, the M output ports output specific potentials in sequence and the N input ports are detected to determine the triggered switch. According to the invention, the switching value inputs are connected into a matrix, the triggered switch is identified by using progressive scanning, and the switching value input capability of a control system is greatly improved.

Description

technical field [0001] The invention relates to a switching value input detection device, in particular to a switching value input device, a switching value input design method and a detection method. Background technique [0002] In recent years, with the continuous improvement of construction demand and the degree of intelligence of construction machinery, the control system functions of construction machinery have shown a development trend of increasing input and detection, more detailed division of modules, and more refined control effects. The ever-increasing amount of input control requires a corresponding increase in the number of input / output (I / O) ports of the electronic control unit for construction machinery. But in fact, once an electronic control unit is selected, the number of input / output ports has been determined and cannot be increased arbitrarily. Therefore, in actual work, it is often necessary to re-select an electronic control unit with more powerful pe...

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Problems solved by technology

However, figure 2 An additional electronic input unit 320 is added, which brings an increase in cost, and one more component will add one more fault point, which increases the probability of error

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