Input and output computer card and control method

Abstract

The invention provides an input and output computer card. A J1 connector, a processing circuit module, a protecting circuit module, a first optocoupler isolation circuit, a complex programmable logicdevice (CPLD), a single chip, a controller area network (CAN) transceiver, a second optocoupler isolation circuit, a driving circuit, a power device and a J2 connector are installed from the left to the right in turn on an upper surface of the input and output computer card; several digital quantity input signal channels and several digital quantity output signal channels are arranged on the J1 connector, the several digital quantity input signal channels are electrically connected to the processing circuit module and the protecting circuit channel, the processing circuit module and the protecting circuit module are separately connected to the first optocoupler isolation circuit, the first optocoupler isolation circuit is connected to the CPLD, the CPLD is electrically connected to the single chip, the single chip is connected to the CAN transceiver, through a CAN bus, the CAN transceiver is connected to a CAN interface arranged on the J2 connector, the CPLD is electrically connected to the second optocoupler isolation circuit, the second optocoupler isolation circuit is electrically connected to the driving circuit module, and the driving circuit module is electrically connected to the power device.

Description

technical field [0001] The invention belongs to the technical field of rail transit traction control, and in particular relates to an input-output board and a control method. Background technique [0002] In terms of electrical traction control of EMUs or locomotives in the field of rail transit, under normal circumstances, the number of contactors and relays is not too large, and the general-purpose digital input and output acquisition boards can basically meet the digital acquisition requirements; but in some other locomotive traction systems applications Among them, there are a lot of contactors and relays, and it is also required to realize the self-test function of the hardware circuit of the system. In this way, it is difficult for the general digital input and output acquisition board to meet the digital acquisition requirements. [0003] Existing products can realize digital input and output acquisition boards, which can basically meet the requirements of digital acq...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an input and output board and control method, which solves the problem that the existing products cannot realize the digital quantity data collection of the traction system with a large number of contactors and relays, and cannot realize the self-test function of the system hardware circuit

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