WO2013078664A1

WO2013078664A1 - Portable wtb data analysis card and working method thereof

Info

Publication number: WO2013078664A1
Application number: PCT/CN2011/083311
Authority: WO
Inventors: 于跃; 郭建斌; 姜悦礼; 王晓鹏
Original assignee: 中国北车股份有限公司大连电力牵引研发中心
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2013-06-06

Abstract

Disclosed are a portable WTB data analysis card and a working method thereof. The portable WTB data analysis card comprises: an MCU, a WTB protocol controller, a WTB codec, and a WTB drive that are connected through an internal bus in a two-way manner sequentially, the WTB drive being connected to an external TWB bus in a two-way manner; and a dual-port RAM, an FPGA, and a PCMCIA interface circuit, one end of the dual-port RAM being connected to the MCU through the internal bus in a two-way manner, the other end of the dual-port RAM being connected to the FPGA through the internal bus in a two-way manner, one end of the PCMCIA interface circuit being connected to the FPGA, and the other end of the PCMCIA interface circuit being connected to an external computer. The present invention has advantages of reliability, flexibility, universality, and low cost.

Description

Portable WTB data analysis card and its working method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network control device for a locomotive, and more particularly to a portable WTB data analysis card for a locomotive based on a Wire Train Bus (WTB) network technology and a method for operating the same. Background technique

WTB technology is mainly used for locomotive communication, which can realize the transmission of process data and message data. Its biggest feature is to have the locomotive initial running function, that is, when the configuration of the locomotive vehicle changes, the vehicle can be automatically addressed to form a new one. The locomotive topology is built without the need for human involvement. Based on the WTB technology network, the WTB network is a network specially designed for the rolling stock of the rolling stock. It has become a high-reliability fieldbus network widely used in foreign and domestic countries. It is an important part of the IEC61375-1 standard. The WTB network is highly professional, and the external interface is not particularly convenient.

The portable WTB data analysis card is a data analysis device that is gradually widely used on rolling stock, which is convenient for maintenance personnel to analyze data online through a portable computer. When the vehicle fails, the maintenance personnel can analyze the faulty equipment on the vehicle online and use the relevant PC analysis software to make relevant judgments and analysis on the operation of the vehicle.

Due to the special application of rolling stock, the core technology of many portable WTB data analysis cards has been monopolized by foreign countries, and the domestic market is still blank, which makes the price of portable data analysis cards abroad very expensive. In addition, the structure and function of portable data analysis cards in foreign countries cannot meet the needs of domestic users, and their practicability is low. SUMMARY OF THE INVENTION The present invention provides a portable WTB data analysis card and a working method thereof, which are used to solve the technical defects of high cost and low practicability of the portable WTB data analysis card in the prior art, thereby reducing the cost of the data card and improving the practicability. Technical effects.

The invention provides a portable WTB data analysis card, comprising:

MCU, WTB protocol controller, WTB codec and WTB driver, through internal total The lines are sequentially bidirectionally connected, and the WTB driver and the external WTB bus are bidirectionally connected; the dual port RAM, the FPGA and the PCMCIA interface circuit; one end of the dual port RAM is bidirectionally connected to the MCU through the internal bus, and the other end The FPGA is bidirectionally connected through the internal bus; one end of the PCMCIA interface circuit is connected to the FPGA, and the other end is used to connect to an external computer.

The WTB driver is responsible for converting the first WTB bus data input by the WTB bus into a first Manchester signal, and outputting to the WTB codec, and converting the second Manchester signal output by the WTB codec into Second WTB bus data and output via the WTB bus;

The WTB codec is responsible for decoding the first Manchester signal into a first HDLC digital signal, and outputting to the WTB protocol controller, and encoding the second HDLC digital signal output by the WTB protocol controller into a Said second Manchester signal;

The MCU is responsible for timing control of the WTB protocol controller, and processing data stored in the WTB protocol controller and the dual port RAM;

The WTB protocol controller is configured to parse the first HDLC digital signal into data that can be processed by the MCU, generate an interrupt signal, and generate a second HDLC digital signal according to the data to be transmitted by the MCU, and output the code to the WTB codec. Device

The FPGA is responsible for storing the first parallel bus data stored in the dual port RAM by the MCU, converting into first PCMCIA interface data, and outputting through the PCMCIA interface circuit; and inputting through the PCMCIA interface circuit The second PCMCIA interface data is converted into second parallel bus data and stored in the dual port RAM.

The portable WTB data analysis card may further include: a redundant WTB codec and a redundant WTB driver; one end of the redundant WTB codec is bidirectionally connected to the WTB protocol controller through the internal bus, and the other end passes through the The internal bus and one end of the redundant WTB driver are bidirectionally connected; the other end of the redundant WTB driver is bidirectionally connected to the external WTB redundant bus.

The redundant WTB driver is responsible for demodulating third WTB bus data input via the redundant WTB bus into a third Manchester signal, and outputting to the redundant WTB codec, and compiling the redundant WTB Converting the second Manchester signal of the decoder to the second

WTB bus data, and output via the redundant WTB bus;

The redundant WTB codec is responsible for decoding the third Manchester signal into a third HDLC digital signal, and output to the WTB protocol controller, and encoding the second HDLC digital signal output by the WTB protocol controller to the second Manchester signal;

The WTB protocol controller is further responsible for parsing the third HDLC digital signal into data that the MCU can process and generating an interrupt signal; and outputting the second HDLC digital signal to the redundant WTB codec.

The MCU may be specifically a Z8S180 processor, and the FPGA may be specifically an XC2S100E chip.

The present invention further provides a working method of the portable WTB data analysis card, comprising: a WTB driver converting first WTB bus data input via a WTB bus into a first Manchester signal and outputting to a WTB codec; The codec decodes the first Manchester signal into a first HDLC digital signal and outputs it to a WTB protocol controller; the WTB protocol controller parses the first HDLC digital signal into data that can be processed by the MCU, and generates Interrupt signal; the MCU receives the interrupt signal, processes the processable data, obtains first parallel bus data and stores the data in a dual port RAM; the FPGA reads the first parallel bus data and converts it into The first PCMCIA interface data is outputted by the PCMCIA interface circuit; the FPGA converts the second PCMCIA interface data input through the PCMCIA interface circuit into the second parallel bus data, and stores the data into the dual port RAM; The MCU reads and processes the second parallel bus data to obtain data to be transmitted; the WTB protocol controller is based on The data to be transmitted generates a second HDLC digital signal, and is sent to the WTB codec; the WTB codec encodes the second HDLC digital signal into a second Manchester signal, and outputs the same to the WTB driver; The WTB driver converts the second Manchester signal into second WTB bus data and outputs it via the WTB bus.

The method may further include: the WTB protocol controller outputting the second HDLC digital signal to a redundant WTB codec; the redundant WTB codec encoding the second HDLC digital signal to a second Manchester Signaling and outputting to a redundant WTB driver; the redundant WTB driver converting the second Manchester signal into second WTB bus data and outputting through a redundant WTB bus;

The redundant WTB driver converts the third WTB bus data input via the WTB redundant bus to a third Manchester signal and outputs to a redundant WTB codec; the redundant WTB codec will The third Manchester signal is converted into a third HDLC digital signal and output to the office The WTB protocol controller; the WTB protocol controller parses the third HDLC digital signal into data that can be processed by the MCU, and generates an interrupt signal.

The above data to be transmitted may include: process data, message data, and/or monitoring data.

The invention combines the WTB bus mechanism dedicated to the field of rolling stock and the PCMCIA interface circuit with wide application basis, and creates a novel data analysis card based on the WTB interface, which has a very popular application for realizing the data analysis of the rolling stock. Important, reliability, flexibility, versatility, low cost, etc., easy to install, maintain and analyze data. In addition, the present invention becomes a part of the locomotive system, so that manufacturers who are unfamiliar with the locomotive field or have no WTB bus research and development capabilities can quickly push their products to the railway market.

1 is a schematic structural diagram 1 of a portable WTB data analysis card provided by the present invention; FIG. 2 is a schematic structural diagram 2 of a portable WTB data analysis card provided by the present invention; FIG. 3 is a flowchart of a working method of a portable WTB data analysis card provided by the present invention. FIG. 4 is a second flowchart of a working method of a portable WTB data analysis card provided by the present invention.

Reference mark:

1-MCU; 2- WTB protocol controller; 3-WTB codec;

4-WTB driver; 5—dual port RAM; 6-FPGA;

7- PCMCIA interface circuit; 11-Z8S180 processor; 61-XC2S100E chip;

8-redundant WTB codec H 9-redundant WTB driver. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 is a schematic structural diagram 1 of a portable WTB data analysis card provided by the present invention. As shown in FIG. 1 , the portable WTB data analysis card provided in this embodiment includes: an MCU (Multi Controller Unit), a WTB protocol controller 2, a WTB codec 3, a WTB driver 4, and a dual port RAM. (Random Access Memory) 5. FPGA (Field-Programmable Gate Array) 6 and PCMCIA (Personal Computer Memory Card International Association) Interface circuit 7.

The MCU1, the WTB protocol controller 2, the WTB codec 3, and the WTB driver 4 are sequentially bidirectionally connected through the internal bus, that is, the MCU1 is bidirectionally connected to the WTB protocol controller 2 via the internal bus, and the WTB protocol controller 2 is connected through the internal bus. The WTB codec 3 is bidirectionally connected, and the WTB codec 3 is bidirectionally connected to the WTB driver 4 via an internal bus. The WTB driver 4 is also bidirectionally connected to the external WTB bus. In addition, one end of the dual-port RAM5 is bidirectionally connected to the MCU1 through the internal bus, and the other end is bidirectionally connected to the FPGA 6 through the internal bus; the PCMCIA interface circuit 7 is connected to the FPGA 6 at one end and connected to an external computer, such as a portable computer, for It performs data analysis.

WTB driver 4 is responsible for the bus data input to the WTB bus (may be called: first

The WTB bus data is converted into a Manchester signal (may be called: the first Manchester signal), and output to the WTB codec 3, and the Manchester signal output from the WTB codec 3 (may be called: the second Manchester signal) ) Converted to WTB bus data (may be called: second WTB bus data) and output via the WTB bus.

The WTB codec 3 is responsible for decoding the first Manchester signal output by the WTB driver 4 into an HDLC digital signal (may be referred to as: the first HDLC digital signal), and outputting it to the WTB protocol controller 2, and the WTB protocol controller 2 The output HDLC digital signal encoding (which may be referred to as: the second HDLC digital signal) is encoded as a second Manchester signal.

MCU1 performs central control, such as timing control for WTB protocol controller 2, and processing data stored in WTB protocol controller 2 and dual port RAM5.

The WTB protocol controller 2 is responsible for parsing the first HDLC digital signal into data that can be processed by the MCU, generating an interrupt signal, and generating a second HDLC digital signal according to the data to be transmitted by the MCU1, and outputting it to the WTB codec 3.

The FPGA 6 is responsible for storing the parallel bus data of the MCU 1 in the dual port RAM 5 (may be referred to as: the first parallel bus data), converting to PCMCIA interface data (may be referred to as: the first PCMCIA interface data), and outputting through the PCMCIA interface circuit 7 And the PCMCIA interface data (which may be referred to as: the second PCMCIA interface data) input through the PCMCIA interface circuit 7 is converted into parallel bus data (referred to as: second parallel bus data) and stored in the dual port RAM 5.

Embodiment 2

FIG. 2 is a schematic structural diagram 2 of a portable WTB data analysis card provided by the present invention. Figure 2 As shown, the difference between the embodiment and the corresponding embodiment of FIG. 1 includes:

To improve data processing speed, the MCU can be a high speed microcontroller, preferably a Z8S180 processor 11 . In order to meet the different needs of users, FPGA can choose FPGA chip with better expansion performance, preferably XC2S100E chip 61;

In order to improve the expansion performance of the device and meet the different needs of the user, the portable WTB data analysis card of this embodiment is redundantly arranged, that is, may also include: redundant WTB codec 8 and redundant WTB driver 9; redundant WTB coding One end of the decoder 8 is bidirectionally connected to the WTB protocol controller 2 via the internal bus, and the other end is bidirectionally connected to one end of the redundant WTB driver 9 through the internal bus; the other end of the redundant WTB driver 9 is bidirectionally connected to the external WTB redundant bus.

The redundant WTB driver 9 is responsible for demodulating WTB bus data (referred to as: third WTB bus data) input via the redundant WTB bus into a Manchester signal (referred to as: a third Manchester signal), and outputs it to the redundant WTB. The codec 8, and the second Manchester signal output from the redundant WTB codec 8, are converted to the second WTB bus data and output via the redundant WTB bus.

Redundant WTB codec 8 is responsible for decoding the third Manchester signal into HDLC digital signal

(may be called: the third HDLC digital signal), and output to the WTB protocol controller 2, and encode the second HDLC digital signal output from the WTB protocol controller 2 into the second Manchester signal.

Correspondingly, the WTB protocol controller 2 is also responsible for parsing the third HDLC digital signal into data that the MCU can process and generating an interrupt signal; and outputting the second HDLC digital signal to the redundant WTB codec.

In the above technical solution, the redundant WTB codec 8 and the redundant WTB driver 9 can be connected to the WTB redundant bus as a set of redundant interfaces by using the same devices as the WTB codec 3 and the WTB driver 4, respectively.

Embodiment 3

FIG. 3 is a flow chart 1 of a working method of a portable WTB data analysis card provided by the present invention. The flow shown in Figure 3 is the direction of the data flow from the WTB bus to the portable computer, describing how the portable WTB data analysis card works. Referring to Figure 1 and Figure 3, the method includes:

Step 31: The WTB driver converts the first WTB bus data input via the WTB bus into the first Manchester signal and outputs it to the WTB codec.

Step 32: The WTB codec decodes the first Manchester signal into the first HDLC digital signal No., and output to the WTB protocol controller.

Step 33: The WTB protocol controller parses the first HDLC digital signal into data that the MCU can process and generates an interrupt signal.

Step 34: The MCU receives the interrupt signal, and processes the processable data stored in the WTB protocol controller to obtain the first parallel bus data and stores it in the dual port RAM.

The first parallel bus data may be specifically 16-bit standard parallel bus data.

Step 35: The FPGA reads the first parallel bus data and converts it into the first PCMCIA interface data, and outputs the data through the PCMCIA interface circuit, and performs data analysis by using the portable computer.

If the portable WTB data analysis card adopts a redundant arrangement as shown in FIG. 2, the above step 31 may further include: the redundant WTB driver converts the third WTB bus data input via the WTB redundant bus into a third Manchester signal, And output to the redundant WTB codec. The above step 32 may further include: the redundant WTB codec converting the third Manchester signal into a third HDLC digital signal and outputting to the WTB protocol controller. The above step 33 may further include: the WTB protocol controller parses the third HDLC digital signal into data that the MCU can process, and generates an interrupt signal.

Embodiment 4

FIG. 4 is a second flowchart of a working method of a portable WTB data analysis card provided by the present invention. The flow shown in Figure 4 is the direction of the data flow from the laptop to the WTB bus, describing how the portable WTB data analysis card works. Referring to Figures 1 and 4, the method includes:

Step 41: The FPGA converts the second PCMCIA interface data input through the PCMCIA interface circuit into the second parallel bus data, and stores the data into the dual port RAM.

The second parallel bus data may be specifically 16-bit standard parallel bus data.

Step 42: The MCU reads and processes the second parallel bus data to obtain data to be transmitted. Step 43: The WTB protocol controller generates a second HDLC digital signal according to the data to be transmitted by the MCU, and sends the signal to the WTB codec.

The data to be transmitted by the MCU may include: process data, message data, and/or monitoring data. The process data is periodic data, the message data is aperiodic data, and the monitoring data is periodic or sporadic data.

Step 44: The WTB codec encodes the second HDLC digital signal into a second Manchester signal and outputs it to the WTB driver.

Step 45: The WTB driver converts the second Manchester signal into the second WTB bus data. And output through the WTB bus.

If the portable WTB data analysis card adopts a redundant arrangement as shown in FIG. 2, the above step 43 may further include: the WTB protocol controller outputs the second HDLC digital signal to the redundant WTB codec; The method may include: the redundant WTB codec encoding the second HDLC digital signal into a second Manchester signal and outputting to the redundant WTB driver; the above step 45 may further include: the redundant WTB driver converting the second Manchester signal to the second WTB bus data, and output via redundant WTB bus.

It should be noted that due to the specificity of the WTB bus, many manufacturers cannot provide data analysis cards with WTB interfaces, and this technology has been monopolized by foreign countries. The equipment cost is high and the versatility is not satisfactory. Based on this, the applicant of the present invention combines the bus technology dedicated to the locomotive vehicle with the special technology in the industrial control field through the self-developed technology, and the WTB analysis card dedicated to the locomotive vehicle has a wide application value.

According to the specific analysis of the above technical solutions, the present invention has the following beneficial effects:

1. The present invention combines a PCMCIA interface circuit with a WTB bus technology to convert dedicated WTB bus data into general PCMCIA interface data. The PCMCIA interface communication method adopted by the present invention is one of the widely used communication methods for portable computers, and has the advantages of simple interface, low price, convenient debugging, reliable performance, and completely matching the WTB network in communication rate. The portable WTB data analysis card provided by the invention is applied to the fields of rolling stock, electric power plants and the like, and has the characteristics of high real-time data analysis and fast response time.

2. The invention adopts an FPGA card and has strong expansion performance, and can expand the function of the data analysis card according to different needs of customers. The specific functions that can be implemented include: First, multiple PCMCIA interface extensions can be performed according to the characteristics of multiple users; Second, other interfaces can be extended according to user data collection, for example, the customer requests data collected on the WTB bus from Interfaces such as I2C and SPI are output.

In summary, the present invention combines a WTB bus mechanism dedicated to the field of rolling stock and a PCMCIA interface circuit with a wide application base to create a new data analysis card based on the WTB interface, which is beneficial to the data analysis of the rolling stock. Promote application, reliability, flexibility, versatility, low cost, etc., easy to install, maintain and analyze data. In addition, the present invention has become a part of the locomotive system, so that manufacturers who are unfamiliar with the locomotive field or have no WTB bus research and development capabilities can quickly push their products to the railway market. Ming is very suitable for widespread application in the field of rolling stock.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Claim

1. A portable WTB data analysis card, comprising:

The MCU, the WTB protocol controller, the WTB codec, and the WTB driver are sequentially bidirectionally connected by an internal bus, and the WTB driver is bidirectionally connected to the external WTB bus;

a dual port RAM, an FPGA and a PCMCIA interface circuit; one end of the dual port RAM is bidirectionally connected to the MCU through the internal bus, and the other end is bidirectionally connected to the FPGA through the internal bus; one end of the PCMCIA interface circuit Connected to the FPGA and the other end is used to connect to an external computer.

2. The portable WTB data analysis card according to claim 1, wherein the WTB driver is responsible for converting the first WTB bus data input by the WTB bus into a first Manchester signal and outputting to the WTB series. a decoder, and converting a second Manchester signal output by the WTB codec into second WTB bus data and outputting through the WTB bus;

3. The portable WTB data analysis card of claim 1, further comprising: a redundant WTB codec and a redundant WTB driver;

One end of the redundant WTB codec is bidirectionally connected to the WTB protocol controller through the internal bus, and the other end is bidirectionally connected to one end of the redundant WTB driver through the internal bus; the redundant WTB driver The other end is bidirectionally connected to the external WTB redundant bus.

4. The portable WTB data analysis card according to claim 3, wherein said redundant WTB driver is responsible for demodulating third WTB bus data input via said redundant WTB bus into a third Manchester signal, and Outputting to the redundant WTB codec, and converting a second Manchester signal output by the redundant WTB codec into second WTB bus data, and outputting through the redundant WTB bus;

The redundant WTB codec is responsible for decoding the third Manchester signal into a third HDLC digital signal, and outputting to the WTB protocol controller, and encoding the second HDLC digital signal output by the WTB protocol controller For the second Manchester signal;

The portable WTB data analysis card according to any one of claims 1 to 4, wherein the MCU is specifically a Z8S180 processor, and the FPGA is specifically an XC2S100E chip.

The working method of the portable WTB data analysis card according to any one of claims 1 to 5, characterized in that it comprises:

The WTB driver converts the first WTB bus data input via the WTB bus into a first Manchester signal and outputs to the WTB codec; the WTB codec decodes the first Manchester signal into a first HDLC digital signal, and Outputting to a WTB protocol controller; the WTB protocol controller parses the first HDLC digital signal into data that can be processed by the MCU, and generates an interrupt signal; the MCU receives the interrupt signal, and the processable data Processing, obtaining first parallel bus data and storing to the dual port RAM; the FPGA reads the first parallel bus data and converts it into first PCMCIA interface data, and outputs the data through the PCMCIA interface circuit; The second PCMCIA interface data input through the PCMCIA interface circuit is converted into second parallel bus data and stored in the dual port RAM; the MCU reads and processes the second parallel bus data to obtain a to-be-transmitted Data; the WTB protocol controller generates a second HDLC digital signal according to the data to be transmitted, and sends the second HDLC digital signal to the WTB codec; The WTB codec encodes the second HDLC digital signal into a second Manchester signal and outputs to the WTB driver; the WTB driver converts the second Manchester signal into a second WTB bus data, and The WTB bus is output.

7. The working method according to claim 6, further comprising: The WTB protocol controller outputs the second HDLC digital signal to a redundant WTB codec; the redundant WTB codec encodes the second HDLC digital signal into a second Manchester signal, and outputs the redundancy a redundant WTB driver; the redundant Manchester driver converts the second Manchester signal into second WTB bus data and outputs it via a redundant WTB bus;

The redundant WTB driver converts the third WTB bus data input via the WTB redundant bus to a third Manchester signal and outputs to a redundant WTB codec; the redundant WTB codec will The third Manchester signal is converted to a third HDLC digital signal and output to the WTB protocol controller; the WTB protocol controller parses the third HDLC digital signal into data that can be processed by the MCU and generates an interrupt signal.

8. The working method according to claim 6 or 7, wherein the data to be transmitted comprises: process data, message data and/or monitoring data.