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A serial communication isolation drive device based on fpga

A technology of isolation drive and serial communication, which is applied in the field of communication, can solve problems such as poor versatility, failure to apply isolation devices, and high cost, and achieve the effects of preventing lightning strikes, preventing static electricity, and improving accuracy

Active Publication Date: 2020-08-04
WUHAN JINGCE ELECTRONICS GRP CO LTD
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Problems solved by technology

[0006] The transmission methods of the above-mentioned various serial communications are different. In the prior art, different devices are used to achieve anti-interference isolation for various communication methods, and the cost is high; moreover, when a certain isolation device fails, The isolation device must adopt the same serial communication method to replace it, and other types of equipment cannot be used. For example, the isolation device based on SPI cannot be applied to QSPI communication, and the versatility is poor.

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  • A serial communication isolation drive device based on fpga
  • A serial communication isolation drive device based on fpga
  • A serial communication isolation drive device based on fpga

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0028] FPGA: Field Programmable Gate Array), that is, Field Programmable Gate Array, which is a product of further development on the basis of programmable devices such as PAL, GAL, and CPLD. It emerged as a semi-custom circuit in the field of application-specific integrated circuits (ASIC), which not only solves the shortcomings of custom circuits, but also overcomes the shortcomings of the limited number of original programmable device gates. FPGA can be used as a sample piece for other full-custom or semi-custom ASIC circuits. There are abundant flip-flops and I / O pins inside the FPGA. FPGA is one of the devices with the shortest design cycle, the lowest development cost and the lowest risk in ASIC circuits. FPGA adopts high-...

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Abstract

The invention discloses a serial communication isolated driving device based on FPGA, which comprises an FPGA chip, a power switch control circuit, a signal control circuit, a relay control circuit and a protection circuit, wherein a power signal output end of the FPGA chip is connected with a control signal input end of the power switch control circuit, a plurality of control signal output ends are connected with a plurality of control signal input ends of the circuit control circuit, a plurality of communication signal output ends are connected with a plurality of communication signal inputends of the signal control circuit, and a plurality of isolated signal output ends are connected with a plurality of control ends of the relay control circuit; and the output end of the power switch control circuit and a plurality of output ends of the signal control circuit are respectively connected with a plurality of input ends of the relay control circuit. The serial communication isolated driving device based on FPGA in the invention realizes the isolation of the power source and the signal through the relay control circuit, thereby weakening or eliminating the interference of the outside and the interference inside the system, and improving the accuracy of data transmission and the system working stability, so that the data transmission efficiency is faster.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an FPGA-based serial communication isolation drive device, in particular to a device used in occasions where FPGA-based serial communication and anti-interference requirements are high. Background technique [0002] The industrial site environment is complex, and there are many ways of serial communication. The common ones are IIC, SPI, QSPI, etc., and there are many on-site interference sources. The application needs to be isolated from the interface of the external device to avoid affecting the working status of the external interface. [0003] IIC stands for Inter-Integrated Circuit (Integrated Circuit Bus). This bus type is a simple, two-way, two-wire, synchronous serial bus designed by Philips Semiconductors in the early 1980s. It is mainly used to connect the overall circuit. , IIC is a multi-directional control bus, which means that multiple chips can be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42G06F13/40
CPCG06F13/4022G06F13/4282
Inventor 程洪刘斌余广得帅敏郑增强
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
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