Simple and efficient programmable universal switch board

Abstract

A simple and efficient programmable universal switch board relates to the technical field of electronic products and comprises a power supply circuit, a USB interface circuit, a serial port circuit, an MCU circuit, a drive circuit and a relay array, wherein the USB interface circuit, the serial port circuit are both connected with the MCU circuit; the MCU circuit is connected with the drive circuit through a SPI IN interface; the drive circuit is respectively connected with an SPI OUT interface and the relay array; the power supply circuit is connected with the USB interface circuit, the serial port circuit, the MCU circuit, the drive circuit and the relay array to supply power to the USB interface circuit, the serial port circuit, the MCU circuit, the drive circuit and the relay array. Compared with the traditional PCI or PXI bus, the simple and efficient programmable universal switch board has the advantages of simple structure, light weight, small size and the like and can be used independently or expanded through cascade connection.

Description

Technical field: [0001] The invention relates to the technical field of electronic products, in particular to a programmable relay switch board based on a serial port and a USB port. Background technique: [0002] Most of the existing relay switch boards are based on the PCI bus or PXI bus, and the requirements for use are relatively high, especially for automotive electronics, which have many output channels and various output forms, such as PWM output, analog output, and digital output Wait. Most of the existing boards are matrix cards with less than 32 channels. In order to meet the test requirements, multiple matrix cards need to be installed. This not only increases the cost, but also requires that the computer or PXI machine slot must have enough slots, which increases the cost of building a complete test system. Redundant overhead, very inconvenient. [0003] In addition, the existing boards are self-made by various manufacturers. Once damaged, it is impossible to b...

AI Technical Summary

Problems solved by technology

Most of the existing boards are matrix cards with less than 32 channels. In order to meet the test requirements, multiple matrix cards need to be installed. This not only increases the cost, but also requires that the computer or PXI machine slot must have enough slots, which increases the cost of building a complete test system. Redundant overhead, very inconvenient

[0003] In addition, the existing boards are self-made by various manufacturers. Once damaged, it is impossible to buy a device of the same specification from the market for replacement, and the board must be sent back to the original manufacturer. Not only the maintenance cost is high, but also the time is long, which is not conducive to production. R&D Rapid Response Requirements

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