Unlock instant, AI-driven research and patent intelligence for your innovation.

External expansion bus filter for electrostatic protection, system on chip and electrostatic protection method

A filter and bus technology, applied in the field of low-voltage embedded control system or power electronics, can solve the problems of weak anti-interference ability, restricting the development of the industry, and high maintenance costs, so as to achieve communication data accuracy resistance, improve system stability, and avoid The effect of frequent reboots

Active Publication Date: 2018-11-16
常州昊云工控科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the system on a chip also has shortcomings that cannot be ignored. The most obvious is that the current embedded development system has weak anti-interference ability and high failure rate in industrial sites.
[0004] In order to overcome the failures caused by the harsh conditions of the industrial site and the complex situation; custom-made SoCs are usually used, but the high cost of mass production and high maintenance costs of custom-made SoCs, and the low interoperability between each company greatly limit the development of the industry , with the requirements of industry 4.0 for interconnection, general-purpose soc has very high advantages in terms of interoperability and low cost, but the adaptability of general-purpose soc to industrial field applications is lacking compared with customized soc, the most typical The most important thing is that the anti-interference ability under high-voltage static electricity is insufficient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • External expansion bus filter for electrostatic protection, system on chip and electrostatic protection method
  • External expansion bus filter for electrostatic protection, system on chip and electrostatic protection method
  • External expansion bus filter for electrostatic protection, system on chip and electrostatic protection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a filter.

[0039] The filter is suitable for connecting to the external expansion bus to filter out low-frequency ripple interference.

[0040] In this embodiment, since there are many and dense signal lines, the filter can use several ceramic chip capacitors connected to the ground, such as but not limited to 25V 0402 ceramic chip capacitors, each ceramic chip capacitor is suitable for The bypass is at each connection of the bus; and the capacitance value of each ceramic chip capacitor is 27pF-100pF.

[0041] The electrostatic test of this filter is carried out by using the system on chip, the principle block diagram of the system on chip is shown in figure 1 As shown, in the system on chip, the interference signal is mainly spatially radiated to the expansion bus, the source and propagation channel of the interference signal cannot be changed, and no good method has been found to eliminate the interference signal in the prior art.

[0042] ...

Embodiment 2

[0048] On the basis of Embodiment 1, Embodiment 2 provides a system on chip.

[0049] See figure 1 , the system on chip includes: a main control core board and a function expansion board; wherein the main control core board is suitable for connecting with the function expansion board through its built-in bus external expansion circuit, and the external expansion bus of the external expansion circuit of the bus There are filters on them.

[0050] The filter may be the filter described in Embodiment 1. For the specific parameter setting of this filter, please refer to Embodiment 1 for details, and will not be repeated here.

[0051] see Figure 2a to Figure 4 , the bus external expansion circuit includes: first and second isolation modules connected to the processor module; wherein the first isolation module is suitable for isolating data information, and the second isolation module is suitable for address information and The control information is isolated; each ceramic chip...

Embodiment 3

[0056] On the basis of Embodiment 1 and Embodiment 2, this embodiment also provides an electrostatic protection method.

[0057] Specifically, a filter is connected to the bus external expansion circuit in the main control core board to filter out low-frequency ripple interference.

[0058] The filter may be the filter described in Embodiment 1. For the specific parameter setting of this filter, please refer to Embodiment 1 for details, and will not be repeated here.

[0059] The bus external expansion circuit includes: first and second isolation modules; wherein the first isolation module is suitable for isolating data information, and the second isolation module is suitable for isolating address information and control information; each The ceramic chip capacitors are respectively connected to the output ends of the first and second isolation modules, so as to perform low-frequency filtering on each channel of data information, each channel of address information and each ch...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to an electrostatic protection external expansion bus filter, a system on chip and an electrostatic protection method. The filter is adapted to connect an external expansion bus to filter out the interference of the low frequency ripple. According to the electrostatic protection external expansion bus filter, the system on chip and the electrostatic protection methodprovided by the present invention, electrostatic protection by the system can be effectively implemented, frequent restart of the system can be avoided, and system stability, communication data accuracy, and resistance to the interference of the static electricity and the high-frequency electromagnetic field can be further improved.

Description

technical field [0001] The invention belongs to the field of low-voltage embedded control systems or power electronics, and in particular relates to an external expansion bus filter for electrostatic protection, an on-chip system and an electrostatic protection method. Background technique [0002] At present, PLC is still the preferred controller in the industrial neighborhood in the market. In addition to the short development cycle and convenient software implementation, the main reason is that PLC has stable performance, low failure rate and strong anti-interference ability. However, with the development of power electronics technology, the system-on-chip has gradually penetrated into the industrial field. At present, PLC applications have been replaced in many fields, such as elevators, automated production lines, and industrial MES systems. [0003] However, there are also shortcomings that cannot be ignored in the system on a chip. The most obvious is that the current...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40H02H9/00
CPCG06F13/4018H02H9/00
Inventor 庞浩吴刚成映华
Owner 常州昊云工控科技有限公司