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PWM (Pulse Width Modulation) input module and MVB (Multifunction Vehicle Bus) equipment based on MVB interface

An input module and interface technology, applied in the field of automation, can solve problems affecting the reliability and stability of train operation, achieve the effect of improving reliability and stability and reducing equipment costs

Inactive Publication Date: 2010-09-22
CHINA CNR LIMITED DALIAN ELECTRIC TRACTION R&D CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a PWM input module and MVB equipment based on the MVB interface, so as to solve the problem that when there is large interference on the train communication network site, the use of the CPU and the MVB protocol controller to process the PWM input affects the reliability of the train operation and stability issues

Method used

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  • PWM (Pulse Width Modulation) input module and MVB (Multifunction Vehicle Bus) equipment based on MVB interface
  • PWM (Pulse Width Modulation) input module and MVB (Multifunction Vehicle Bus) equipment based on MVB interface
  • PWM (Pulse Width Modulation) input module and MVB (Multifunction Vehicle Bus) equipment based on MVB interface

Examples

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Effect test

Embodiment 1

[0028] figure 1 It is a schematic structural diagram of an embodiment of a PWM input module based on the MVB interface of the present invention, as figure 1 As shown, the module includes: a processing unit 11, a control unit 12, a communication storage unit 13 and a PWM conversion unit 14;

[0029] The processing unit 11 is connected to the control unit 12; the communication storage unit 13 is respectively connected to the processing unit 11, the control unit 12 and the PWM conversion unit 14;

[0030] The PWM conversion unit 14 converts the obtained PWM signal into a digital signal, and sends the data corresponding to the digital signal to the communication storage unit 13; the processing unit 11 decodes the data frame received from the MVB bus, and sends the data corresponding to the main frame The decoded data is sent to the control unit 12; the control unit 12 judges the sending port according to the decoded data corresponding to the main frame, and controls the communica...

Embodiment 2

[0037] figure 2 It is a schematic structural diagram of another embodiment of a PWM input module based on an MVB interface in the present invention, as figure 2 As shown, the module includes: a processing unit 11, a control unit 12, a communication storage unit 13 and a PWM conversion unit 14;

[0038] Wherein, the processing unit 11 is connected to the control unit 12; the communication storage unit 13 is respectively connected to the processing unit 11, the control unit 12 and the PWM conversion unit 14;

[0039] The PWM conversion unit 14 converts the obtained PWM signal into a digital signal, and sends the data corresponding to the digital signal to the communication storage unit 13; the processing unit 11 decodes the data frame received from the MVB bus, and decodes the corresponding data of the main frame The data is sent to the control unit 12; the control unit 12 judges the sending port according to the decoded data corresponding to the main frame, and controls the ...

Embodiment 3

[0060] image 3 It is a schematic structural diagram of an MVB device embodiment of the present invention, such as image 3 As shown, the device includes: physical interface module 1, PWM acquisition module 2 and PWM input module 3;

[0061] Wherein, the physical interface module 1 is respectively connected with the MVB bus and the PWM input module 3 , and the PWM input module 3 is connected with the PWM acquisition module 2 .

[0062] The PWM input module 3 is a PWM input module based on the MVB interface provided in the foregoing embodiments. This module specifically includes: a processing unit 11, a control unit 12, a communication storage unit 13, and a PWM conversion unit 14; the PWM conversion unit 14 converts the obtained PWM signal into a digital signal, and sends the data corresponding to the digital signal to the communication storage unit 13 The processing unit 11 decodes the data frame received from the MVB bus, and sends the decoded data corresponding to the mai...

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Abstract

The invention provides a PWM (Pulse Width Modulation) input module and MVB (Multifunction Vehicle Bus) equipment based on an MVB interface. The module comprises a processing unit, a control unit, a communication memory unit and a PWM converting unit, wherein the processing unit is connected with the control unit; the communication memory unit is respectively connected with the processing unit, the control unit and the PWM converting unit; the PWM converting unit converts acquired PWM signals into data signals and sends the data signals to the communication memory unit; the processing unit decodes data frames received from an MVB bus, and sends the decoded data corresponding to the main frame to the control unit; the control unit judges a sending port according to the decoded data corresponding to the main frame, and controls the communication memory unit to read the memorized data from the sending port to the processing unit; and the processing unit encodes the data and sends the data to the MVB bus. The invention improves the running reliability and the stability of a train under the condition of larger interference of the communication network site of the train, and reduces the cost of the equipment.

Description

technical field [0001] The invention relates to an MVB bus technology, in particular to a PWM input module and MVB equipment based on an MVB interface; it belongs to the field of automation technology. Background technique [0002] The Multifunction Vehicle Bus (MVB for short) is a vehicle bus that connects standard equipment located in the same vehicle or fixedly connected different vehicles to the train communication network. The master device on the MVB bus centrally controls each device connected to the bus. [0003] In the prior art, the pulse width modulation (Pulse Width Modulation; hereinafter referred to as: PWM) signal of the MVB interface is usually processed by a central processing unit (Central Processing Unit; hereinafter referred to as: CPU) and an MVB protocol controller, and then input to the MVB bus. The CPU has software to run when performing operations, which will affect the reliability and stability of the train operation when there is a large interfere...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L12/40
Inventor 吴健王锋金晓宇沈世博
Owner CHINA CNR LIMITED DALIAN ELECTRIC TRACTION R&D CENT
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