CN102325068A - Portable WTB (Wire Train Bus) data analysis card and working method thereof - Google Patents
Portable WTB (Wire Train Bus) data analysis card and working method thereof Download PDFInfo
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Abstract
The invention discloses a portable WTB (Wire Train Bus) data analysis card and a working method thereof, wherein the portable WTB data analysis card comprises an MCU (Micro Controller Unit), a WTB protocol controller, a WTB codec, a WTB drive, a double-interface RAM (Random Access Memory), an FPGA (Field-Programmable Gate Array) and a PCMCIA (Personal Computer Memory Card International Association) interface circuit; the MCU, the WTB protocol controller, the WTB codec and the WTB drive are in sequential two-way connection through an internal bus, and the WTB drive is in two-way connection with an external WTB bus; one end of the double-interface RAM is in two-way connection with the MCU through the internal bus, and the other end of the double-interface RAM is in two-way connection with the FPGA through the internal bus; and one end of the PCMCIA interface circuit is connected with the FPGA, and the other end of the PCMCIA interface circuit is used for being connected with an external computer. The portable WTB data analysis card and the working method thereof, disclosed by the invention, have the advantages of reliability, flexibility, universality, low cost and the like.
Description
Technical field
The present invention relates to a kind of network control unit that is used for locomotive, particularly a kind of based on wired train bus (Wire Train Bus, be called for short WTB) network technology, be used for the portable WTB data analysis card and the method for work thereof of locomotive.
Background technology
The WTB technology is mainly used in the communication of locomotive; But the transmission of implementation procedure data and message data; Its maximum characteristics have locomotive operation function just exactly, promptly after the configuration of rolling stock changes, can automatically carry out addressing to vehicle; Constitute new locomotive topological structure, and do not need artificial participation.The WTB network is based on the networking of WTB technology; It is a kind of network of rolling stock bus design that is specially; Become at present a kind of abroad with the high reliability fieldbus networks of domestic a large amount of uses; Be an important component part of IEC61375-1 standard, but because the WTB network is strongly professional, external interface also not convenient especially.
Portable WTB data analysis card is extensive use DAF gradually on the present rolling stock, and the personnel that maintain easily carry out on-line analysis through portable computer to data.When vehicle breaks down, the faulty equipment of attendant on can the on-line analysis vehicle, and carry out judgement and analysis that the ruuning situation of car load is correlated with by relevant upper computer analyzing software.
Because the particular utility of rolling stock, the core technology of a lot of portable WTB data analysis cards is monopolized by external, the domestic blank that also is in, and this makes external portable data analyzing card price very expensive.In addition, on the external portable data analyzing card 26S Proteasome Structure and Function, can not satisfy domestic user's demand well, its practicality is lower.
Summary of the invention
The present invention provides a kind of portable WTB data analysis card and method of work thereof, in order to the technological deficiency that portable WTB data analysis card cost is high, practicality is low in the solution prior art, thereby reaches the technique effect that reduces the data card cost, improves practicality.
The present invention provides a kind of portable WTB data analysis card, comprising:
MCU, WTB protocol controller, WTB codec and WTB driver, through the two-way in order connection of internal bus, and said WTB driver and outside two-way connection of WTB bus;
Dual port RAM, FPGA and pcmcia interface circuit; One end of said dual port RAM is connected and the other end is connected with said FPGA is two-way through said internal bus through said internal bus and said MCU are two-way; Said pcmcia interface circuit one end is connected with said FPGA and the other end is used to connect outer computer.
Said WTB driver is responsible for a WTB bus data of said WTB bus input is converted into first Manchester signal and outputs to said WTB codec, and is the 2nd WTB bus data and through said WTB bus output with second Manchester conversion of signals of said WTB codec output;
Said WTB codec is responsible for said first Manchester signal decoding is a HDLC digital signal and outputs to said WTB protocol controller, and the 2nd HDLC digital signal encoding that said WTB protocol controller is exported is said second Manchester signal;
Said MCU is responsible for the SECO of said WTB protocol controller, and handles the data of storing in said WTB protocol controller and the said dual port RAM;
Said WTB protocol controller is responsible for a said HDLC digital signal is resolved to the accessible data of MCU and produces interrupt signal, and generates the 2nd HDLC digital signal according to MCU data waiting for transmission, and outputs to said WTB codec;
Said FPGA is responsible for said MCU is stored in the first parallel bus data in the said dual port RAM, converts the first pcmcia interface data into, and via said pcmcia interface circuit output; And will convert the second parallel bus data into, and be stored in said dual port RAM through the second pcmcia interface data of said pcmcia interface circuit input.
Above-mentioned portable WTB data analysis card also can comprise: redundant WTB codec and redundant WTB driver; One end of said redundant WTB encoding and decoding is through said internal bus and said two-way connection of WTB protocol controller, and the other end is through two-way connection of an end of said internal bus and said redundant WTB driver; The other end of said redundant WTB driver and outside two-way connection of WTB redundant bus.
Said redundant WTB driver is responsible for the 3rd WTB bus data through said redundant WTB bus input is demodulated into the 3rd Manchester signal and outputs to said redundant WTB codec; And with said second Manchester signal of said redundant WTB codec output; Convert said the 2nd WTB bus data into, and through said redundant WTB bus output;
Said redundant WTB codec is responsible for said the 3rd Manchester signal decoding is the 3rd HDLC digital signal and outputs to said WTB protocol controller, and said the 2nd HDLC digital signal encoding that said WTB protocol controller is exported is said second Manchester signal;
Said WTB protocol controller also is responsible for said the 3rd HDLC digital signal is resolved to the accessible data of MCU, and produces interrupt signal; And said the 2nd HDLC digital signal outputed to said redundant WTB codec.
Said MCU can be specially the Z8S180 processor, and said FPGA can be specially the XC2S100E chip.
The method of work of a kind of above-mentioned portable WTB data analysis card that the present invention also provides comprises: the WTB driver will convert first Manchester signal into and output to the WTB codec through a WTB bus data of WTB bus input; Said WTB codec is a HDLC digital signal with said first Manchester signal decoding and outputs to the WTB protocol controller; Said WTB protocol controller resolves to the accessible data of MCU with a said HDLC digital signal, and produces interrupt signal; Said MCU receives said interrupt signal, and said accessible data are handled, and obtains the first parallel bus data and is stored in dual port RAM; Said FPGA reads the said first parallel bus data and converts the first pcmcia interface data into, and through said pcmcia interface circuit output;
Said FPGA will convert the second parallel bus data into, and be stored in said dual port RAM through the second pcmcia interface data of said pcmcia interface circuit input; Said MCU reads and handles the said second parallel bus data, obtains data waiting for transmission; Said WTB protocol controller generates the 2nd HDLC digital signal according to said data waiting for transmission, and sends to said WTB codec; Said WTB codec is second Manchester signal with said the 2nd HDLC digital signal encoding, and outputs to said WTB driver; Said WTB driver is the 2nd WTB bus data with said second Manchester conversion of signals, and through said WTB bus output.
Said method also can comprise: said WTB protocol controller outputs to redundant WTB codec with said the 2nd HDLC digital signal; Said redundant WTB codec is second Manchester signal with said the 2nd HDLC digital signal encoding, and outputs to redundant WTB driver; Said redundant WTB driver is the 2nd WTB bus data with said second Manchester conversion of signals, and through redundant WTB bus output;
Said redundant WTB driver will it converts the 3rd Manchester signal into through the 3rd WTB bus data of said WTB redundant bus input, and outputs to redundant WTB codec; Said redundant WTB codec is the 3rd HDLC digital signal with said the 3rd Manchester conversion of signals, and outputs to said WTB protocol controller; Said WTB protocol controller resolves to the accessible data of MCU with said the 3rd HDLC digital signal, and produces interrupt signal.
Above-mentioned data waiting for transmission can comprise: process data, message data and/or monitoring data.
The present invention is with the WTB bus mechanism of rolling stock domain-specific; Combine with the pcmcia interface circuit on extensive application basis; Createed a kind of novel data analysis card based on the WTB interface; For realizing that applying of rolling stock data analysis has crucial meaning, have reliability, flexibility, versatility, low cost and other advantages, make things convenient for installation, maintenance and data analysis.In addition; The present invention becomes the function of required realization a part of locomotive system; Make the manufacturer that the locomotive field is unfamiliar with or is not possessed WTB bus research and development ability; Can push the product of oneself to Railway Market fast, so the present invention is very suitable for extensively promoting in the application of rolling stock.
Description of drawings
Fig. 1 is the structural representation one of portable WTB data analysis card provided by the invention;
Fig. 2 is the structural representation two of portable WTB data analysis card provided by the invention;
Fig. 3 is a portable WTB data analysis card method of work flow chart one provided by the invention;
Fig. 4 is a portable WTB data analysis card method of work flowchart 2 provided by the invention.
Reference numeral:
1-MCU; The 2-WTB protocol controller; The 3-WTB codec;
The 4-WTB driver; The 5-dual port RAM; 6-FPGA;
The 7-PCMCIA interface circuit; The 11-Z8S180 processor; The 61-XC2S100E chip;
The redundant WTB codec of 8-; The redundant WTB driver of 9-.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
Fig. 1 is the structural representation one of portable WTB data analysis card provided by the invention.As shown in Figure 1; The portable WTB data analysis card that present embodiment provides comprises: MCU (multipoint control unit; Micro Controller Unit) 1, WTB protocol controller 2, WTB codec 3, WTB driver 4, dual port RAM (random access memory; Random Access Memory) 5 FPGA (field programmable gate array; Field-Programmable Gate Array) 6 and PCMCIA (personal computer memory card international association, Personal Computer Memory Card International Association) interface circuit 7.
MCU1, WTB protocol controller 2, WTB codec 3 and WTB driver 4; Through the two-way in order connection of internal bus; That is: MCU1 is through internal bus and 2 two-way connections of WTB protocol controller; WTB protocol controller 2 is through internal bus and 3 two-way connections of WTB codec, and WTB codec 3 is through internal bus and 4 two-way connections of WTB driver.WTB driver 4 also with outside two-way connection of WTB bus.In addition, an end of dual port RAM 5 is connected and the other end passes through internal bus and is connected with FPGA6 is two-way through internal bus and MCU1 are two-way; Pcmcia interface circuit 7 one ends are connected with FPGA6 and the other end is used to connect outer computer, as connecting portable computer, supply it to carry out data analysis.
First Manchester signal) and output to WTB codec 3 WTB driver 4 is responsible for the bus datas of WTB bus input (might as well be referred to as: a WTB bus data) convert Manchester signal into and (might as well be referred to as:, and Manchester signal of WTB codec 3 outputs (might as well be referred to as: second Manchester signal) convert the WTB bus data into and (might as well be referred to as: the 2nd WTB bus data) and through the WTB bus export.
First Manchester signal that WTB codec 3 is responsible for 4 outputs of WTB driver; A HDLC digital signal) and output to WTB protocol controller 2 being decoded as the HDLC digital signal (might as well be called:, and the HDLC digital signal encoding of WTB protocol controller 2 outputs (might as well be called: the 2nd HDLC digital signal) be encoded to second Manchester signal.
MCU1 carries out central authorities' control, like the SECO of responsible WTB protocol controller 2, and the data of handling storage in WTB protocol controller 2 and the dual port RAM 5.
WTB protocol controller 2 is responsible for a HDLC digital signal is resolved to the accessible data of MCU and produces interrupt signal, and generates the 2nd HDLC digital signal according to MCU1 data waiting for transmission, and outputs to WTB codec 3.
The first pcmcia interface data), and via 7 outputs of pcmcia interface circuit FPGA6 is responsible for that MCU1 is stored in parallel bus data in the dual port RAM 5 and (might as well be called: the first parallel bus data), convert the pcmcia interface data into and (might as well be called:; And will (might as well be called: the second pcmcia interface data), convert the parallel bus data into and (might as well be called: the second parallel bus data), and be stored in dual port RAM 5 through the pcmcia interface data of pcmcia interface circuit 7 inputs.
Embodiment two
Fig. 2 is the structural representation two of portable WTB data analysis card provided by the invention.As shown in Figure 2, present embodiment is comprising with the difference of the corresponding embodiment of Fig. 1:
Improve data processing speed, MCU can be high-speed microprocessor, is preferably Z8S180 processor 11.In order to satisfy user's different demands, FPGA can select scalability fpga chip preferably for use, is preferably XC2S 100E chip 61;
In order to improve the scalability of equipment, satisfy user's different demands, the portable WTB data analysis of present embodiment sticks into has gone redundant arrangement, promptly also can comprise: redundant WTB codec 8 and redundant WTB driver 9; One end of redundant WTB codec 8 is through internal bus and 2 two-way connections of WTB protocol controller, and the other end is through two-way connection of an end of internal bus and redundant WTB driver 9; The other end and outside two-way connection of WTB redundant bus of redundant WTB driver 9.
The 3rd Manchester signal) and output to redundant WTB codec 8 redundant WTB driver 9 is responsible for and will (might as well be called: the 3rd WTB bus data) be demodulated into Manchester signal and (might as well be called: through the WTB bus data of redundant WTB bus input; And with second Manchester signal of redundant WTB codec 8 outputs; Convert the 2nd WTB bus data into, and through redundant WTB bus output.
The 3rd HDLC digital signal) and output to WTB protocol controller 2 it is that the HDLC digital signal (might as well be called:, and be second Manchester signal with the 2nd HDLC digital signal encoding of WTB protocol controller 2 outputs that redundant WTB codec 8 is responsible for the 3rd Manchester signal decoding.
Accordingly, WTB protocol controller 2 also is responsible for the 3rd HDLC digital signal is resolved to the accessible data of MCU, and produces interrupt signal; And the 2nd HDLC digital signal outputed to redundant WTB codec.
In the technique scheme, redundant WTB codec 8 and redundant WTB driver 9 can adopt the equipment identical with WTB codec 3 and WTB driver 4 respectively, are connected on the WTB redundant bus as one group of redundant interface.
Embodiment three
Fig. 3 is a portable WTB data analysis card method of work flow chart one provided by the invention.Flow process as shown in Figure 3 is the data flow direction that flows into portable computer from the WTB bus, describes the method for work of portable WTB data analysis card.See also Fig. 1 and shown in Figure 3, this method comprises:
Step 31:WTB driver will convert first Manchester signal into and output to the WTB codec through a WTB bus data of WTB bus input.
Step 32:WTB codec is a HDLC digital signal with first Manchester signal decoding and outputs to the WTB protocol controller.
Step 33:WTB protocol controller resolves to the accessible data of MCU with a HDLC digital signal, and produces interrupt signal.
Step 34:MCU receives interrupt signal, and the accessible data of storing in the WTB protocol controller are handled, and obtains the first parallel bus data and is stored in dual port RAM.
The first parallel bus data can be specially 16 standard parallel bus data.
Step 35:FPGA reads the first parallel bus data and converts the first pcmcia interface data into, and through the output of pcmcia interface circuit, carries out data analysis for portable computer.
If portable WTB data analysis card adopts redundant arrangement as shown in Figure 2; Then above-mentioned steps 31 also can comprise: redundant WTB driver will it converts the 3rd Manchester signal into through the 3rd WTB bus data of WTB redundant bus input, and outputs to redundant WTB codec.Above-mentioned steps 32 also can comprise: redundant WTB codec is the 3rd HDLC digital signal with the 3rd Manchester conversion of signals, and outputs to the WTB protocol controller.Above-mentioned steps 33 also can comprise: the WTB protocol controller resolves to the accessible data of MCU with the 3rd HDLC digital signal, and produces interrupt signal.
Embodiment four
Fig. 4 is a portable WTB data analysis card method of work flowchart 2 provided by the invention.Flow process as shown in Figure 4 is the data flow direction that flows into the WTB bus from portable computer, describes the method for work of portable WTB data analysis card.See also Fig. 1 and shown in Figure 4, this method comprises:
Step 41:FPGA will convert the second parallel bus data into, and be stored in dual port RAM through the second pcmcia interface data of pcmcia interface circuit input.
The second parallel bus data can be specially 16 standard parallel bus data.
Step 42:MCU reads and handles the second parallel bus data, obtains data waiting for transmission.
Step 43:WTB protocol controller generates the 2nd HDLC digital signal according to MCU data waiting for transmission, and sends to the WTB codec.
MCU data waiting for transmission can comprise: process data, message data and/or monitor data.Wherein, process data is a periodic data, and message data is the aperiodicity data, and monitor data is periodicity or sporadic data.
Step 44:WTB codec is second Manchester signal with the 2nd HDLC digital signal encoding, and outputs to the WTB driver.
Step 45:WTB driver is the 2nd WTB bus data with second Manchester conversion of signals, and exports through the WTB bus.
If portable WTB data analysis card adopts redundant arrangement as shown in Figure 2, then above-mentioned steps 43 also can comprise: the WTB protocol controller outputs to redundant WTB codec with said the 2nd HDLC digital signal; Above-mentioned steps 44 also can comprise: redundant WTB codec is second Manchester signal with the 2nd HDLC digital signal encoding, and outputs to redundant WTB driver; Above-mentioned steps 45 also can comprise: redundant WTB driver is the 2nd WTB bus data with second Manchester conversion of signals, and through redundant WTB bus output.
Need to prove that at present owing to the specificity of WTB bus, a lot of producers can not provide the card of the data analysis with WTB interface, and the monopolization always abroad of this technology quilt, equipment cost remains high, and versatility is also not as people's will.Based on this, applicant of the present invention is through the technology of self-control development, and the bussing technique that rolling stock is special-purpose and the special technology of industrial control field mutually combine, and the special-purpose WTB analyzing card of the rolling stock of developing has application value widely.
Concrete analysis through technique scheme can know that the present invention has following beneficial effect:
1, the present invention combines pcmcia interface circuit and WTB bussing technique, converts the WTB bus data of special use into general pcmcia interface data.Because the pcmcia interface communication modes that the present invention adopts; Be one of widely used communication modes of present portable computer, have that interface is simple, cheap, debugging is convenient, dependable performance and on traffic rate fully and advantage such as WTB network coupling.Portable WTB data analysis card provided by the invention is applied to fields such as rolling stock, power plant, characteristics such as the real-time with data analysis is high, the response time is fast.
2, the present invention adopts the FPGA card, has very strong scalability, can carry out the function expansion of data analysis card according to different requirements of customers.The function that specifically can realize comprises: the first, can carry out a plurality of pcmcia interface expansions according to multi-user's characteristics; The second, can carry out the expansion of other interface to the collection of data according to the user, such as customer requirement the data of gathering on the WTB bus are exported from interfaces such as I2C, SPI.
To sum up; The present invention is with the WTB bus mechanism of rolling stock domain-specific; Combine with the pcmcia interface circuit on extensive application basis, createed a kind of novel data analysis card, help realizing applying of rolling stock data analysis based on the WTB interface; And have reliability, flexibility, versatility, low cost and other advantages, make things convenient for installation, maintenance and data analysis.In addition; The present invention becomes the function of required realization a part of locomotive system; Make the manufacturer that the locomotive field is unfamiliar with or is not possessed WTB bus research and development ability; Can push the product of oneself to Railway Market fast, so the present invention is very suitable for extensively promoting in the application of rolling stock.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (8)
1. a portable WTB data analysis card is characterized in that, comprising:
MCU, WTB protocol controller, WTB codec and WTB driver, through the two-way in order connection of internal bus, and said WTB driver and outside two-way connection of WTB bus;
Dual port RAM, FPGA and pcmcia interface circuit; One end of said dual port RAM is connected and the other end is connected with said FPGA is two-way through said internal bus through said internal bus and said MCU are two-way; Said pcmcia interface circuit one end is connected with said FPGA and the other end is used to connect outer computer.
2. portable WTB data analysis card according to claim 1 is characterized in that,
Said WTB driver is responsible for a WTB bus data of said WTB bus input is converted into first Manchester signal and outputs to said WTB codec, and is the 2nd WTB bus data and through said WTB bus output with second Manchester conversion of signals of said WTB codec output;
Said WTB codec is responsible for said first Manchester signal decoding is a HDLC digital signal and outputs to said WTB protocol controller, and the 2nd HDLC digital signal encoding that said WTB protocol controller is exported is said second Manchester signal;
Said MCU is responsible for the SECO of said WTB protocol controller, and handles the data of storing in said WTB protocol controller and the said dual port RAM;
Said WTB protocol controller is responsible for a said HDLC digital signal is resolved to the accessible data of MCU and produces interrupt signal, and generates the 2nd HDLC digital signal according to MCU data waiting for transmission, and outputs to said WTB codec;
Said FPGA is responsible for said MCU is stored in the first parallel bus data in the said dual port RAM, converts the first pcmcia interface data into, and via said pcmcia interface circuit output; And will convert the second parallel bus data into, and be stored in said dual port RAM through the second pcmcia interface data of said pcmcia interface circuit input.
3. portable WTB data analysis card according to claim 1 is characterized in that, also comprises: redundant WTB codec and redundant WTB driver;
One end of said redundant WTB encoding and decoding is through said internal bus and said two-way connection of WTB protocol controller, and the other end is through two-way connection of an end of said internal bus and said redundant WTB driver; The other end of said redundant WTB driver and outside two-way connection of WTB redundant bus.
4. portable WTB data analysis card according to claim 3 is characterized in that,
Said redundant WTB driver is responsible for the 3rd WTB bus data through said redundant WTB bus input is demodulated into the 3rd Manchester signal and outputs to said redundant WTB codec; And with second Manchester signal of said redundant WTB codec output; Convert the 2nd WTB bus data into, and through said redundant WTB bus output;
Said redundant WTB codec is responsible for said the 3rd Manchester signal decoding is the 3rd HDLC digital signal and outputs to said WTB protocol controller, and the 2nd HDLC digital signal encoding that said WTB protocol controller is exported is said second Manchester signal;
Said WTB protocol controller also is responsible for said the 3rd HDLC digital signal is resolved to the accessible data of MCU, and produces interrupt signal; And said the 2nd HDLC digital signal outputed to said redundant WTB codec.
5. according to the arbitrary described portable WTB data analysis card of claim 1～4, it is characterized in that said MCU is specially the Z8S180 processor, said FPGA is specially the XC2S100E chip.
6. the method for work of the arbitrary described portable WTB data analysis card of claim 1～5 is characterized in that, comprising:
The WTB driver will convert first Manchester signal into and output to the WTB codec through a WTB bus data of WTB bus input; Said WTB codec is a HDLC digital signal with said first Manchester signal decoding and outputs to the WTB protocol controller; Said WTB protocol controller resolves to the accessible data of MCU with a said HDLC digital signal, and produces interrupt signal; Said MCU receives said interrupt signal, and said accessible data are handled, and obtains the first parallel bus data and is stored in dual port RAM; Said FPGA reads the said first parallel bus data and converts the first pcmcia interface data into, and through said pcmcia interface circuit output;
Said FPGA will convert the second parallel bus data into, and be stored in said dual port RAM through the second pcmcia interface data of said pcmcia interface circuit input; Said MCU reads and handles the said second parallel bus data, obtains data waiting for transmission; Said WTB protocol controller generates the 2nd HDLC digital signal according to said data waiting for transmission, and sends to said WTB codec; Said WTB codec is second Manchester signal with said the 2nd HDLC digital signal encoding, and outputs to said WTB driver; Said WTB driver is the 2nd WTB bus data with said second Manchester conversion of signals, and through said WTB bus output.
7. method of work according to claim 6 is characterized in that, also comprises:
Said WTB protocol controller outputs to redundant WTB codec with said the 2nd HDLC digital signal; Said redundant WTB codec is second Manchester signal with said the 2nd HDLC digital signal encoding, and outputs to redundant WTB driver; Said redundant WTB driver is the 2nd WTB bus data with said second Manchester conversion of signals, and through redundant WTB bus output;
Said redundant WTB driver will it converts the 3rd Manchester signal into through the 3rd WTB bus data of said WTB redundant bus input, and outputs to redundant WTB codec; Said redundant WTB codec is the 3rd HDLC digital signal with said the 3rd Manchester conversion of signals, and outputs to said WTB protocol controller; Said WTB protocol controller resolves to the accessible data of MCU with said the 3rd HDLC digital signal, and produces interrupt signal.
8. according to claim 6 or 7 described method of works, it is characterized in that said data waiting for transmission comprise: process data, message data and/or monitoring data.
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| CN201110137575.4A CN102325068B (en) | 2011-05-24 | 2011-05-24 | Portable WTB (Wire Train Bus) data analysis card and working method thereof |
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| CN105631965A (en) * | 2014-10-30 | 2016-06-01 | 中车大连电力牵引研发中心有限公司 | Vehicle-mounted WTB message recorder |
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| CN102325068B (en) | 2014-06-18 |
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