The emc protection system of the main engine of the train automatic control system

A technology of automatic train control and system host, applied in the transmission system, transmission noise suppression, electrical components, etc., can solve the problems of no circuit, the overall performance of the product cannot be satisfied at the same time, and the design considerations are not comprehensive, etc., to achieve the effect of isolation

Active Publication Date: 2020-04-24
EVOC SMART IOT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are incomplete considerations in the design of these products. Some products do not have a fully isolated design, and some product interfaces and some circuits do not have EMC (Electromagnetic Compatibility, electromagnetic compatibility) protection, so the EMC performance cannot meet the requirements, or after EMC protection, it cannot meet the requirements. Therefore, the overall performance of the product cannot meet the EMC requirements of the rail transit standard EN50121-3-2-2006 and the requirements of withstand voltage and insulation in EN50155-2007
The products in the rail transit industry must meet the requirements of industry standards at the same time, that is, meet the requirements of two aspects at the same time. First, the EMC test can pass level 3 or above. Second, it must meet the requirements of insulation resistance 100M ohms and insulation withstand voltage AC 500V; If the above standards cannot be met at the same time, there will be safety hazards in the actual use of the product. When the equipment is struck by lightning or has high-voltage interference, equipment damage may occur and cause traffic accidents.

Method used

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  • The emc protection system of the main engine of the train automatic control system
  • The emc protection system of the main engine of the train automatic control system
  • The emc protection system of the main engine of the train automatic control system

Examples

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Embodiment Construction

[0024] Such as figure 1 Shown is the module diagram of the EMC protection system of the main engine of the automatic train control system.

[0025] An EMC protection system for a main engine of a train automatic control system, which is used for signal isolation and electromagnetic compatibility protection of the control main engine, including a signal isolation module 101, a high-voltage discharge withstand voltage protection module 103, a voltage dividing and current limiting module 104, and a clamp common Die protection module 105.

[0026] Both the voltage dividing and current limiting module 104 and the clamping common mode protection module 105 are connected to the signal isolation module 101, and the high voltage discharge withstand voltage protection module 101 and the voltage dividing and current limiting module 104 are both connected to the control host signal port.

[0027] The signal isolation module 101 is used to isolate the coded signal sent to the control hos...

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Abstract

The invention provides an EMC protection system for an automatic train control system host. The EMC protection system carries out isolation processing on an encoding signal of the control host by a signal isolation module to ensure that external interference cannot directly influence an internal circuit of the control host. Then, anti-surge and peak current protection, decoupling and current limiting protection and surge power absorption are carried out by a high voltage discharge withstand voltage protection module, a voltage division current limiting module and a clamp common mode protection module in sequence, so as to realize three-level protection of EMC. Therefore, the EMC protection system for the automatic train control system host can simultaneously satisfy signal port isolation and signal port EMC protection.

Description

technical field [0001] The invention relates to an EMC protection technology for a host of an automatic train control system, in particular to an EMC protection system for a host of an automatic train control system with good pressure resistance and strong anti-interference. Background technique [0002] At present, in the train control room of the rail transit industry, the mainframe (controlling host) of the automatic train control system is all using foreign tablet computer products, such as PIXY, Siemens and other brands. There are incomplete considerations in the design of these products. Some products do not have a fully isolated design, and some product interfaces and some circuits do not have EMC (Electromagnetic Compatibility, electromagnetic compatibility) protection, so the EMC performance cannot meet the requirements, or after EMC protection, it cannot meet the requirements. As far as the performance of the insulation withstand voltage is concerned, the overall p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B15/00
Inventor 张绪坤
Owner EVOC SMART IOT TECH CO LTD
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